2009年12月第25卷第12期
Accession number:20100812731119
Title:Quality improvement of industrial aquaculture recycled water by sand filters
Authors:Zhou, Yang (1); Chen, Youguang (1); Duan, Dengxuan (1); Wang, Mei (2)
Author affiliation:(1) Fresh Water Fisheries Research Institute of Shandong Province, Jinan 250117, China; (2) College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 200090, China
Corresponding author:Chen, Y.
(chenyouguang2000@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:254-258
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Two groups of three parallel ordinary sand filter tanks were used in the experiment. According to the physical and geometric principles, quartz sand with particle size of 3 mm was selected as the middle-level, while 2 mm and 5 mm as the upper and lower level, respectively. The particle densities of the upper and lower levels were less than that of the middle one. An experiment of water treatment on factory recycled water by sand filter and its backflushing renewable effect was carried out. The results showed that suspended solids removal efficiency was extremely significant (P&le0.01), which removal rate reached 99.83%, and sand filter tank after backflushed was renewable to be used.
Number of references:18
Main heading:Industrial water treatment
Controlled terms:Agriculture - Fish ponds - Oxide minerals - Quartz - Removal - Sand - Tanks (containers) - Water recycling
Uncontrolled terms:Culturing recycled-water - Industrial aquaculture - Quartz sand - Sand filter - Sand filter tank
Classification code:821.3 Agricultural Methods - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 804.2 Inorganic Compounds - 802.3 Chemical Operations - 619.2 Tanks - 505 Mines and Mining, Nonmetallic - 483.1 Soils and Soil Mechanics - 482.2 Minerals - 471.5 Sea as Source of Minerals and Food - 453.2 Water Pollution Control - 445.1.2 Water Treatment Techniques for Industrial Use - 445.1 Water Treatment Techniques - 444 Water Resources
DOI:10.3969/j.issn.1002-6819.2009.12.045
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 2>
Accession number:20100812731134
Title:Fresh-keeping effects of Pyrus communis L. treated by 1-MCP at ambient temperature
Authors:Li, Mei (1); Wang, Guixi (1); Liang, Lisong (1); Zhu, Meiyun (2); Li, Zhenru (3); Qi, Liping (3)
Author affiliation:(1) Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; (2) College of Food Science and Technology, Henan Agricultural University, Zhengzhou 450002, China; (3) Forestry Bureau of Daxing District, Beijing 102607, China
Corresponding author:Wang, G.
(wanggx0114@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:345-350
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The postharvest physiology and storage characteristic of Pyrus communis L. cv. Comice treated by 1.0 μL/L 1-MCP for 16 hours and then stored at 20°C were studied. The results showed that 1-MCP treatment could defer the change of fruit mature and colour, reduce the production of ethylene and respiration and postpone the peak value. The ethylene production and respiration of Pyrus communis L. treated with 1-MCP were 69.6% and 79.8% of the contrast respectively, the peak of ethylene and respiration were delayed for six days. 1-MCP treatment retarded the increase of soluble solids and malondialdehyde content. The activity of peroxidase, superoxide dismutase and catalase were increased 144.7%, 113.5% and 141.4% of the contrast, respectively. Moreover, 1-MCP treatment could reduce rotting rate, maintained the quality of pyrus communis L.
Number of references:17
Main heading:Quality control
Controlled terms:Aldehydes - Customer satisfaction - Ethylene - Image storage tubes - Oxygen - Physiology - Plants (botany) - Total quality management
Uncontrolled terms:Ambient temperatures - Ethylene production - Malondialdehyde - Peak values - Postharvest - Pyrus communis - Pyrus communis L. - Soluble solids - Storage characteristic - Super oxide dismutase
Classification code:913.3 Quality Assurance and Control - 912.2 Management - 912 Industrial Engineering and Management - 922.2 Mathematical Statistics - 804.1 Organic Compounds - 714.1 Electron Tubes - 461.9 Biology - 804 Chemical Products Generally
DOI:10.3969/j.issn.1002-6819.2009.12.060
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 3>
Accession number:20100812731117
Title:Out of plane stability of greenhouse side columns with eccentrically lateral braces
Authors:Qi, Fei (1); Tong, Genshu (2)
Author affiliation:(1) Chinese Academy of Agricultural Engineering, Beijing 100125, China; (2) College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
Corresponding author:Tong, G.
(tonggs@ccea.zju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:245-249
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Rectangular box section is widely used as columns in agricultural Greenhouse. Smaller tubes are attached on the outside of the most dangerous side columns to serve as wall purlin. These horizontal smaller tubes provide lateral braces to side columns in practice, but this effect is lacking of theoretical supporting. The paper carried out an analysis of the efficiency of the tube in providing the lateral support. Analysis revealed that, though the smaller tubes are eccentric to the centroid of the column, the lateral braces to the column could still be effective. The out of plane effective length could be decreased accordingly. According to this conclusion, the out of plane effective length could take the distance between the lateral braces when checking the stability of the column. In this way, the checking calculation of the side column could be more scientific and reasonable on the bases of less material application and proper strength and stability of the side column.
Number of references:18
Main heading:Stability
Controlled terms:Greenhouses - Petroleum pipelines - Steel pipe - Tubes (components)
Uncontrolled terms:Agricultural greenhouse - Column stability - Effective length - Lateral braces - Material application - Out of plane stability - Out-of plane - Rectangular box - Side column
Classification code:951 Materials Science - 931 Classical Physics; Quantum Theory; Relativity - 821.6 Farm Buildings and Other Structures - 801 Chemistry - 731.4 System Stability - 961 Systems Science - 619.1 Pipe, Piping and Pipelines - 545.3 Steel - 511.2 Oil Field Equipment - 511.1 Oil Field Production Operations - 402.1 Industrial and Agricultural Buildings - 616.1 Heat Exchange Equipment and Components
DOI:10.3969/j.issn.1002-6819.2009.12.043
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 4>
Accession number:20100812731112
Title:Bio-liquid fuel sustainable assessment system in China
Authors:Meng, Haibo (1); Zhao, Lixin (1); Gao, Xinxing (1); Tian, Yishui (1); De Miglio, Rocco (2); Lavagno, Evasio (2)
Author affiliation:(1) Chinese Academy of Agricultural Engineering, Beijing 100125, China; (2) Dipartimento Di Energetica, Politecnico Di Torino, Italy
Corresponding author:Zhao, L.
(zhaolixin5092@gmail.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:218-223
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The research status of energy balance for bio-liquid fuel in China and the rest of the world have been analysed in this paper. Based on energy balance, emissions of pollutants, land and water resources etc, a bio-liquid fuel sustainable assessment system (BSAS) has been developed by LCA (life cycle assessment), which includes three sections as foundation database, analysis module, optimization module. Two case study have been conducted by the system, which sweetsorghum stalks have been used to produce ethanol in Inner Mongolia and Heilongjiang Province, respectively. The results showed that the system could be used to analysis and assess the sustainability to develop bio-liquid fuels at state, province and specific district levels in China, and bio-liquid fuels planing in the specific area could also be obtained under the certain scenario, which supplys technology support for decision-makers.
Number of references:18
Main heading:Liquids
Controlled terms:Energy balance - Ethanol - Life cycle - Liquid fuels - Strategic planning - Sustainable development - Water analysis - Water resources
Uncontrolled terms:Assessment system - Decision makers - Inner Mongolia - Life-cycle assessments - Optimization module - Specific areas - Sustainable assessment - Technology support
Classification code:931 Classical Physics; Quantum Theory; Relativity - 913.1 Production Engineering - 912.2 Management - 911.2 Industrial Economics - 901.4 Impact of Technology on Society - 931.2 Physical Properties of Gases, Liquids and Solids - 804.1 Organic Compounds - 523 Liquid Fuels - 513.3 Petroleum Products - 445.2 Water Analysis - 444 Water Resources - 801 Chemistry
DOI:10.3969/j.issn.1002-6819.2009.12.038
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 5>
Accession number:20100812731111
Title:Estimation of straw resources in China
Authors:Bi, Yuyun (1); Gao, Chunyu (1); Wang, Yajing (1); Li, Baoyu (2)
Author affiliation:(1) Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (2) School of Economy and Management, Beijing Forestry University, Beijing 100083, China
Corresponding author:Bi, Y.
(biyuyun@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:211-217
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:There are some problems such as statistics lacking, unsuitability of the ratio of main product output to that of by-product of the crops in the estimation of straw resources. The paper chooses the revised ratio of main product output to that of by-product of crops and estimates the quantity of straw resource comprehensively and systematically. The estimation results show that the total straw yield in China has a generally increasing trend with the improvement of agricultural comprehensive production capacity, and China is the biggest country in straw resources that its total output of straw resources in 2005 reached 841831200 t, which the straw of food crops was the main source. It has a great potential for rice husk, corncob, bagasse to develop new energy.
Number of references:17
Main heading:Crops
Controlled terms:Estimation
Uncontrolled terms:China - Estimation results - Food crops - Production capacity - Quantity - Rice husk
Classification code:821.4 Agricultural Products - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2009.12.037
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 6>
Accession number:20100812731100
Title:Traceability system of grain quality safety based on radio frequency identification middleware
Authors:Liu, Peng (1); Tu, Kang (1); Hou, Yuepeng (1)
Author affiliation:(1) College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author:Tu, K.
(kangtu@njau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:145-150
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For constructing traceability system of grain quality safety with fast, comprehensive and precise characteristics, the operation flow and the application mode on grain quality traceability had been analyzed. The analysis of the system flow was carried out based on the RFID (radio frequency identification) middleware in the grain supply chain considering the grain circulation practice in Jiangsu Province. In the mean while, configuration of the hardware and software was studied. Based on the research results, the system architecture of grain quality traceability with RFID middleware technology was proposed by structured design method. Then, the system integration and test had been taken with VC++ language and AutoRunner testing tool. Practical dynamic tests with single tag achieved the system identify accuracy, identify working cycle (the cycle from reading the label to releasing information to the Internet) and MTBF (mean time between failure) with 95.3%, 8.6 s and 1000 h, respectively. The system has the potential application for tracing grain quality and safety.
Number of references:14
Main heading:Quality control
Controlled terms:Customer satisfaction - Middleware - Radio frequency identification (RFID) - Radio waves - Security of data - Statistical tests - Supply chains - Total quality management
Uncontrolled terms:Dynamic tests - Grain - Grain quality - Hardware and software - Jiangsu province - Mean time between failures - Operation flow - Potential applications - Research results - RFID Middleware - Structured design method - System architectures - System flow - System identify - System integration - Testing tools - Traceability systems - VC++ language - Working cycle
Classification code:922.2 Mathematical Statistics - 913.3 Quality Assurance and Control - 913 Production Planning and Control; Manufacturing - 912.2 Management - 912 Industrial Engineering and Management - 911.3 Inventory Control - 731.1 Control Systems - 723.2 Data Processing and Image Processing - 723.1 Computer Programming - 716.3 Radio Systems and Equipment - 711 Electromagnetic Waves
DOI:10.3969/j.issn.1002-6819.2009.12.026
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 7>
Accession number:20100812731090
Title:Development and experiments on tangential flow threshing and separating device of axial flow combine
Authors:Li, Yaoming (1); Jia, Biqing (1); Xu, Lizhang (1); Qiao, Mingguang (1); Zhao, Zhan (1)
Author affiliation:(1) Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Jia, B.
(jia-biqing@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:93-96
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For analyzing the threshing and separating performance of tangential flow threshing and separating unit of axial flow combine, the threshing, separating and cleaning test-bed of axial flow was developed. Spike tooth and knife tooth were applied to the tangential flow threshing and separating unit. The power consumption of tangential flow threshing cylinder, force-feeding drum and axial flow cylinder were experimentally measured. The effects of structure and motion parameters of tangential flow threshing and separating unit on threshing performance were studied. The experimental results showed that threshing rate of tangential flow threshing and separating unit was in the range of about 67.19%-82.37%, and its power consumption accounted for about 20% of total threshing power consumption, the power consumption of tangential flow unit using knife tooth was lower than that using spike tooth, the threshing rate of tangential-axial flow threshing and separating test-bed was higher than 99.90%, the entrainment loss ratio was less than 0.25% for wheat harvest. The power consumption of tangential-axial flow threshing and separating unit using tangential flow threshing cylinder of knife tooth was lower than that using tangential flow threshing cylinder of spike tooth. The force-feeding drum and axial flow threshing cylinder accounted for about 14% and 66% of total threshing power consumption, respectively. The results provide guidance for the development of axial flow combine.
Number of references:16
Main heading:Combines
Controlled terms:Agriculture - Axial flow - Cylinders (shapes) - Dentistry - Feeding - Steady flow - Test facilities
Uncontrolled terms:Cleaning tests - Loss ratio - Motion parameters - Power Consumption - Tangential flow - Threshing and separating unit - Wheat harvest
Classification code:821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 691.2 Materials Handling Methods - 631.1 Fluid Flow, General - 462.3 Dental Equipment and Supplies - 461.6 Medicine and Pharmacology - 461.1 Biomedical Engineering - 423.1 Test Equipment - 422.1 Test Equipment - 408.2 Structural Members and Shapes - 402.1 Industrial and Agricultural Buildings
DOI:10.3969/j.issn.1002-6819.2009.12.016
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 8>
Accession number:20100812731093
Title:Crop rows detection based on parallel characteristic of crop rows using visual navigation
Authors:Chen, Jiao (1); Jiang, Guoquan (2); Du, Shangfeng (1); Ke, Xing (1)
Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (2) School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454000, China
Corresponding author:Du, S.
(du_grad_stud@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:107-113
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To detect and localize the crop rows quickly and effectively for navigation of agricultural machines, a new algorithm for crop rows detection is proposed in this paper. A navigation software was developed in VC++ 6.0. Crop rows were separated from soil background by image pre-processing, and the localization points were got by vertical projection. The world coordinates of each localization point were computed according to the principle of perspective transformation and the camera calibration results. With the parallel characteristic of crop rows, an improved algorithm based on Hough Transform was employed for the detection and localization of crop rows. The experiment with images of crop rows and the simulation experiment in laboratory showed that the new algorithm took 219.4 ms to process a 320×240 pixels color image, and the average errors of navigation distance and navigation angle were 2.33 mm and 0.3°. The experimental results confirmed that the algorithm was accurate, effective and fast enough to detect and localize crop rows for real-time navigation.
Number of references:15
Main heading:Crops
Controlled terms:Agricultural machinery - Algorithms - Calibration - Cameras - Computer vision - Experiments - Hough transforms - Imaging systems - Navigation
Uncontrolled terms:Agricultural machine - Average errors - Camera calibration - Color images - Crop rows - Crop rows detection - Detection and localization - Image preprocessing - Improved algorithm - Machine vision - Navigation software - Perspective transformation - Real-time navigation - Simulation experiments - VC++ 6.0 - Vertical projection - Visual Navigation - World coordinates
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 746 Imaging Techniques - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products - 901.3 Engineering Research - 902.2 Codes and Standards - 921 Mathematics - 921.3 Mathematical Transformations - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 742.2 Photographic Equipment - 431.5 Air Navigation and Traffic Control - 434.4 Waterway Navigation - 655.1 Spacecraft, General - 716.3 Radio Systems and Equipment - 741.2 Vision - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 731.6 Robot Applications - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing
DOI:10.3969/j.issn.1002-6819.2009.12.019
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 9>
Accession number:20100812731075
Title:Emergency water transfer scheme on regional combating drought based on hierarchical theory of large system
Authors:Wang, Shuangyin (1); Cao, Hongxia (1); Zhu, Xiaoqun (1)
Author affiliation:(1) College of Water Resources and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Wang, S.
(wshy6986@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:1-5
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to solve water use conflict occurred in different water requirement departments at the irrigation districts in the west of Guanzhong Region under emergent drought situation, the authors set up a regional optimal water allocation model which aimed at largest total water use quantity at the four irrigation districts by using dynamic programming based on hierarchical theory of large system. Three types of first class choice schemes (the third one is made up of 27 second class choice) for water distribution were made according to different frequencies combination between water needs and inflow. Based on the analysis results of various options scheduling, and considering the actual operation interoperability, water transfer quantity in summer irrigation was taken as main control factor. Through classification and combination, the third scheme was recommended, which includes 11 types of water transfer schemes for four irrigation districts. Satisfied results were obtained by applying the scheme during 2005-2007. This scheme provides scientific basis for emergency water transfer on drought combating.
Number of references:17
Main heading:Water analysis
Controlled terms:Biochemical oxygen demand - Drought - Dynamic programming - Hierarchical systems - Irrigation - Water management - Water supply
Uncontrolled terms:Actual operation - Analysis results - Different frequency - Hierarchical theory of large system - Irrigation districts - Large system - Main control factor - Water allocation models - Water distributions - Water needs - Water requirements - Water transfers - Water use - Water use conflicts
Classification code:961 Systems Science - 921.5 Optimization Techniques - 821.3 Agricultural Methods - 801 Chemistry - 731.1 Control Systems - 453 Water Pollution - 452.4 Industrial Wastes Treatment and Disposal - 452.2 Sewage Treatment - 446.1 Water Supply Systems - 446 Waterworks - 445.2 Water Analysis - 444 Water Resources - 443.3 Precipitation
DOI:10.3969/j.issn.1002-6819.2009.12.001
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 10>
Accession number:20100812731104
Title:Accuracy assessment of four global land cover datasets in China
Authors:Wu, Wenbin (1); Yang, Peng (1); Zhang, Li (1); Tang, Huajun (1); Zhou, Qingbo (1); Ryosuke, Shibasaki (3)
Author affiliation:(1) Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (2) Key Laboratory of Resources Remote Sensing and Digital Agriculture, Ministry of Agriculture, Beijing 100081, China; (3) Center for Spatial Information Science, University of Tokyo, Tokyo 153-8505, Japan
Corresponding author:Zhang, L.
(zhangli@caas.net.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:167-173
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:This study aims to examine the suitability of four global land cover datasets (UMD, IGBP-DISCover, MODIS and GLC2000) for their accuracies in mapping and monitoring cropland across China. For that, four global land cover products were firstly compared with the national land cover dataset 2000 (NLCD-2000) at provincial, regional and national scales to evaluate the accuracies of estimation of aggregated cropland area in China. This was followed by a spatial comparison to assess their accuracies in estimating the spatial distribution of cropland across China. The results showed that there were varying levels of apparent discrepancies in estimating China's cropland among these four global datasets, and that both aggregated areas and spatial agreement between them varied from region to region. MODIS and GLC2000 datasets had a relatively higher accuracy in depicting China's cropland than UMD and IGBP-DISCover datasets. The coarse spatial resolution and per pixel classification approach, as well as landscape heterogeneity, are the main reasons for large discrepancies between these four global land cover datasets and NLCD-2000 dataset.
Number of references:28
Main heading:Classification (of information)
Controlled terms:Data transfer - Database systems - Estimation - Image processing - Imaging systems - Landforms - Radiometers - Size distribution - Spectrometers
Uncontrolled terms:Accuracy assessment - Cropland - Data sets - Land cover - Land cover datasets
Classification code:903.1 Information Sources and Analysis - 921 Mathematics - 922.2 Mathematical Statistics - 801 Chemistry - 931.2 Physical Properties of Gases, Liquids and Solids - 941.3 Optical Instruments - 944.7 Radiation Measuring Instruments - 933.1 Crystalline Solids - 746 Imaging Techniques - 481.1 Geology - 531.2 Metallography - 716.1 Information Theory and Signal Processing - 423 Non Mechanical Properties and Tests of Building Materials - 723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices - 741.3 Optical Devices and Systems - 723.3 Database Systems
DOI:10.3969/j.issn.1002-6819.2009.12.030
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 11>
Accession number:20100812731076
Title:Spatial distribution characteristics of irrigation water requirement for main crops in China
Authors:Liu, Yu (1); Wang, Lin (1); Ni, Guangheng (2); Cong, Zhentao (2)
Author affiliation:(1) China Institute of Water Resources and Hydropower Research, Beijing 100044, China; (2) Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China
Corresponding author:Liu, Y.
(liuyu@iwhr.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:6-12
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Temporal and spatial distribution characteristics of crop water requirement and irrigation requirement are the bases for determining the irrigation quota in different areas. Based on the daily meteorological data over the past 30 years from more than 200 stations in China and the statistical data of crop growth stages from different areas, crop water requirement (ETc) and net irrigation requirement (IR) of 30 kinds of crops were estimated by using FAO Penman-Monteith equation and crop coefficient method. The results were validated with the observed data form different irrigation stations in different areas. Isolines of the average ETc and IR of main crops were obtained by GIS and IDW interpolation methods. The spatial distribution characteristics of ETc and IR for wheat, maize, cotton and rice were analyzed, which were the most widely planted crops in China. The irrigation requirement indexes of main crops in different areas were obtained by IR/ETc. Results revealed that mean irrigation requirement index in Northeast China, middle and lower reaches of the Yangtze River and South China were generally less than 0.5, and the crop irrigation water requirement in these areas was not high. In North China Plain, Inner Mongolia, Ningxia, Shanxi, Shaanxi and Gansu, 30%-50% of the crop water requirements depended on irrigation for dryland crops, 55%-80% of water consumption came from irrigation for rice. In Xinjiang Uygur Autonomous Region, the irrigation requirement indexes of main crops were over 0.7, and the development of agriculture relied entirely on irrigation.
Number of references:15
Main heading:Irrigation
Controlled terms:Crops - Evapotranspiration - Size distribution - Water supply
Uncontrolled terms:Crop water requirement - Crop water requirements - Irrigation water requirements - Net irrigation water requirement - Reference evapotranspiration - Spatial distribution
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 821.4 Agricultural Products - 821.3 Agricultural Methods - 933.1 Crystalline Solids - 802.3 Chemical Operations - 446.1 Water Supply Systems - 444.1 Surface Water - 423 Non Mechanical Properties and Tests of Building Materials - 531.2 Metallography
DOI:10.3969/j.issn.1002-6819.2009.12.002
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 12>
Accession number:20100812731132
Title:Preliminary study on green tea juice extracted by ultrahigh pressure processing
Authors:Chen, Xiaoqiang (1); Zhang, Yinjun (2); Li, Xuepeng (3); Ye, Yang (1); Cheng, Hao (1); Wang, Xinchao (1)
Author affiliation:(1) Key Laboratory of Machining and Quality Control of Tea and Beverage Plants, National Tea Industry Engineering Research Center, China Academy of Agricultural Sciences, Hangzhou 310008, China; (2) College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (3) College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310035, China
Corresponding author:Chen, X.
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:335-338
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To study the feasibility of ultrahigh pressure process (UHPP) applied on green tea juice manufacturing, green tea juice was extracted from green tea (the ratio of green tea to water was 1:15 and 1:50, respectively) by three methods, which were cold water extraction, hot water extraction and ultrahigh pressure processing with 100, 300 and 500 MPa, respectively. The results of analyzing the chemical composition showed that the contents of free amino acids in green tea juice extracted by UHPP in the same ratio of green tea to solvent were higher than those by cold water extraction and hot water extraction, but the contents of water-soluble saccharide were lower than those by cold water extraction and hot water extraction. The yield of tea polyphenols by ultrahigh pressure was higher than that by cold extraction. The analysis of chromatic aberration showed that the degree of yellow-green of the juice extracted by ultrahigh pressure was deeper than that by cold water extraction and hot water extraction. The ultrahigh pressure had a passive effect on activities of polyphenol oxidase and peroxidase.
Number of references:15
Main heading:Solvent extraction
Controlled terms:Aberrations - Amino acids - Customer satisfaction - Organic acids - Phenols - Pressure effects - Quality control - Total quality management - Water - Water analysis
Uncontrolled terms:Analysis of chromatic aberration - Chromatic aberration - Green tea - Green tea juice - Ultrahigh pressure
Classification code:912 Industrial Engineering and Management - 912.2 Management - 913.3 Quality Assurance and Control - 922.2 Mathematical Statistics - 931.1 Mechanics - 941.3 Optical Instruments - 941.4 Optical Variables Measurements - 804.2 Inorganic Compounds - 444 Water Resources - 445.2 Water Analysis - 461 Bioengineering and Biology - 741 Light, Optics and Optical Devices - 801 Chemistry - 802.3 Chemical Operations - 804.1 Organic Compounds
DOI:10.3969/j.issn.1002-6819.2009.12.058
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 13>
Accession number:20100812731081
Title:Experiments on irrigation efficiency using iodine-starch staining
Authors:Wang, Kang (1); Zhang, Renduo (2); Zhou, Zuhao (3)
Author affiliation:(1) State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; (2) School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China; (3) Department of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
Corresponding author:Wang, K.
(wwangkang@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:38-44
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The objectives of this study were to investigate infiltration patterns and irrigation efficiency under various soil texture and hydraulic conditions and to explore relationships between distributions of solute and flow modes under different irrigation conditions. An iodine-starch staining method was applied to visualize flow paths and solute transport, then totally 12 infiltration experiments under flood irrigation and micro-irrigation were conducted in the loam field and clay field respectively. Irrigation efficiency was evaluated using various indictors, including the application efficiency, deep percolation ratio, storage efficiency, and irrigation uniformity. Results showed that the redistribution of infiltration water was mainly attributed to the wetting patterns. Storage efficiency and irrigation uniformity increased with the increasing of irrigation amount, and the deep percolation ratio also increased significantly. Uniformity and deep percolation loss rate of solute distributions were less than that of the water distributions respectively. Redistributions of water and solute after infiltration provided more direct and comprehensive assessment for irrigation efficiency.
Number of references:23
Main heading:Irrigation
Controlled terms:Experiments - Industrial chemicals - Iodine - Seepage - Soil mechanics - Solute transport - Solvents - Starch - Water supply
Uncontrolled terms:Comprehensive assessment - Deep percolation - Flood irrigation - Flow modes - Flow path - Hydraulic conditions - Irrigation efficiency - Irrigation uniformity - Microirrigation - Redistribution of the infiltration water - Soil textures - Solute distribution - Staining method - Storage efficiency - Water distributions
Classification code:804.1 Organic Compounds - 813.2 Coating Materials - 815.1.1 Organic Polymers - 821.3 Agricultural Methods - 822.3 Food Products - 901.3 Engineering Research - 931 Classical Physics; Quantum Theory; Relativity - 804 Chemical Products Generally - 407 Maritime and Port Structures; Rivers and Other Waterways - 441 Dams and Reservoirs; Hydro Development - 444.2 Groundwater - 446.1 Water Supply Systems - 461.3 Biomechanics, Bionics and Biomimetics - 483.1 Soils and Soil Mechanics - 803 Chemical Agents and Basic Industrial Chemicals
DOI:10.3969/j.issn.1002-6819.2009.12.007
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 14>
Accession number:20100812731109
Title:Evaluation system of wheat natural potential productivity at county scale based on GIS
Authors:Zhang, Hao (1); Xi, Lei (1); Xu, Xin (1); Gao, Rui (1); Ma, Xinming (1); Yin, Jun (3)
Author affiliation:(1) College of Information and Management Science, Henan Agricultural University, Zhengzhou 450002, China; (2) College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China; (3) National Engineering Research Center of Wheat, Zhengzhou 450002, China
Corresponding author:Ma, X.
(xinmingma@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:198-205
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To provide technical support and ADM (aid in decision making) for wheat production management and potentiality mining, attribute data (meteorological data, soil data, wheat data) and spatial data were sorted out at eight counties of Henan Province based on the evaluation process about crop natural potential productivity, and space-attribute database was created. The evaluation system of GIS-based wheat natural potential productivity was designed and developed by using UML 2.0, SQL Server 2000 and SuperMap GIS 2008 components, which realized loose coupling between the potential productivity evaluation model interfaces and GIS. The system calculated quantificationally wheat natural potential productivity at county scale by using mechanism models of light, temperature, water, soil based on 'experience-statistics', and made the spatial distribution thematic maps of wheat natural potential productivity through classification statistics and grading cartography. The results showed that photosynthesis potential productivity reduced along with latitude increasing, the order of temperature potential productivity was west>south>southeast>north>center, the order of moisture potential productivity was south>southeast>west>center>north, and the order of soil potential productivity was south>center>north>southeast>west of Henan Province. The key factors affecting wheat natural potential productivity were soil, followed by temperature and moisture, and the factors affecting wheat relative production mining magnitude were moisture, followed by temperature and soil. The system has characteristics about wide applicability and good independence, which provides technical support and ADM for wheat production management and potential mining.
Number of references:22
Main heading:Productivity
Controlled terms:Crops - Geographic information systems - Geologic models - Industrial management - Information systems - Mapping - Maps - Moisture - Radiometers - Soils
Uncontrolled terms:Attribute data - Attribute database - County scale - Evaluation process - Evaluation system - Henan Province - Key factors - Loose couplings - Mechanism model - Meteorological data - Natural potential - Natural potential productivity - Potential productivity - Soil data - Soil potential - Spatial data - Spatial distribution - SQL server 2000 - Technical support - Thematic maps - UML 2.0 - Wheat production
Classification code:944.7 Radiation Measuring Instruments - 913.1 Production Engineering - 912.2 Management - 903.3 Information Retrieval and Use - 903.2 Information Dissemination - 902.1 Engineering Graphics - 821.4 Agricultural Products - 801.4 Physical Chemistry - 723.3 Database Systems - 483.1 Soils and Soil Mechanics - 481.1 Geology - 443.1 Atmospheric Properties - 405.3 Surveying
DOI:10.3969/j.issn.1002-6819.2009.12.035
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 15>
Accession number:20100812731078
Title:Effect of regulation and storage engineering on groundwater salinity in reclaimed water irrigation district
Authors:Wu, Wenyong (1); Liu, Honglu (1); Chen, Honghan (2); Hao, Zhongyong (1); Shi, Yanwu (1); Ma, Fusheng (1)
Author affiliation:(1) Beijing Hydraulic Research Institute, Beijing 100044, China; (2) School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China
Corresponding author:Liu, H.
(liuhonglu@yeah.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:22-25
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The research of irrigation regulation and storage engineering on groundwater salinity was investigated in reclaimed water irrigation district (RWID) of Beijing for site selection. Five research wells with different depths around regulation and storage engineering were drilled to monitor water quality changes. Chloride ion of leachate, total nitrogen, total phosphors, hardness of water samples increased, and removal rate of total nitrogen, total phosphorus of water samples decreased by 97.3% and 99.0%, respectively in 12-meter vadose zone after infiltration, and the measured parameters were close to groundwater background values. Measured results indicated that groundwater was not polluted by reclaimed water infiltration, and there was no significant difference between the effect of reclaimed water and other water resources infiltration on groundwater. The vadose comprising of loam, sand and clay can prevent groundwater pollution for site selection of regulation and storage engineering in RWID.
Number of references:17
Main heading:Groundwater pollution
Controlled terms:Chlorine compounds - Engineering - Groundwater - Groundwater resources - Hydrogeology - Irrigation - Leaching - Nitrogen removal - Phosphorus - Salinity measurement - Salts - Seepage - Site selection - Soil mechanics - Wastewater reclamation - Water quality
Uncontrolled terms:Background value - Chloride ions - Groundwater irrigation - Hardness of water - Irrigation districts - Leachates - Measured parameters - Measured results - Re-claimed water - Removal rate - Total nitrogen - Total phosphorus - Vadose Zone - Water samples
Classification code:481.1 Geology - 483.1 Soils and Soil Mechanics - 513.1 Petroleum Refining, General - 533.1 Ore Treatment - 802.2 Chemical Reactions - 943.3 Special Purpose Instruments - 802.3 Chemical Operations - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 821.3 Agricultural Methods - 901 Engineering Profession - 804 Chemical Products Generally - 471.4 Seawater, Tides and Waves - 454.2 Environmental Impact and Protection - 402 Buildings and Towers - 403 Urban and Regional Planning and Development - 407 Maritime and Port Structures; Rivers and Other Waterways - 441 Dams and Reservoirs; Hydro Development - 444 Water Resources - 444.2 Groundwater - 445.2 Water Analysis - 452.4 Industrial Wastes Treatment and Disposal - 453.1 Water Pollution Sources - 453.2 Water Pollution Control
DOI:10.3969/j.issn.1002-6819.2009.12.004
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 16>
Accession number:20100812731099
Title:Development of portable bio-impedance spectroscopy system for measuring porcine meat quality
Authors:Ding, Qiang (1); Wang, Zhongyi (1); Huang, Lan (1); He, Jianxin (1); Zhang, Genwei (1); Gao, Jian (1); Wan, Qing (2)
Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (2) College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Huang, L.
(biomed_hl@263.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:138-144
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Based on the principle of bio-impedance spectroscopy, a non-destructive portable bio-impedance prototype system for measuring meat quality was developed. The system consisted of a signal generator unit and a detection unit. The former unit could output sinusoidal signal with automatic frequencies scanning, which is range from 0.1 kHz to 250 kHz. The detection unit included detection electrodes and a gain and phase detector. In this work, the performance of six-needle steel electrodes and four-needle graphite electrodes in detecting bio-impedance was compared. Also, coefficients of variability (CVs) were applied to assess the stability of the system. Experiment showed that the coefficient of variation (CV) of the system was less than 6% if the frequency was above 1 kHz. Intra class correlation (ICC) procedures were applied to assess the reliability of the system due to temperature variability. Values of Ri, Re, C in the system model were reliable with intra class correlations of more than 65%. Furthermore, pork samples were selected to investigate relation between bio-impedance spectroscopy and meat quality attributes, i.e. meat freshness. Results showed that bio-impendence value, real part value of bio-impendence, imaginary part value of bio-impendence and characteristics frequency of pork decreased with the change of meat freshness.
Number of references:15
Main heading:Graphite electrodes
Controlled terms:Detectors - Meats - Model structures - Needles - Signal detection - Signal generators
Uncontrolled terms:Automatic frequency - Bio-impedance - Bio-impedance spectroscopy - Coefficient of variation - Coefficients of variabilities - Detection electrode - Imaginary parts - Meat quality - Non destructive - Phase detectors - Porcine meat - Prototype system - Real part - Sinusoidal signals - Steel electrodes - System models - Temperature variability
Classification code:914 Safety Engineering - 822.3 Food Products - 819.6 Textile Mills, Machinery and Equipment - 716.1 Information Theory and Signal Processing - 715 Electronic Equipment, General Purpose and Industrial - 713.5 Other Electronic Circuits - 704.1 Electric Components - 462.1 Biomedical Equipment, General - 408 Structural Design
DOI:10.3969/j.issn.1002-6819.2009.12.025
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 17>
Accession number:20100812731098
Title:Background and external defects segmentation of navel orange based on mask and edge gray value compensation algorithm
Authors:Li, Jiangbo (1); Rao, Xiuqin (1); Ying, Yibin (1); Ma, Benxue (1); Guo, Junxian (1)
Author affiliation:(1) College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
Corresponding author:Rao, X.
(xqrao@zju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:133-137
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Detection of fruits surface defects is always a challenging project for automated fruit grading of computer vision. A new method was developed to solve the problem of a part of defects easily being mistaken for the background when the fruits with defects were segmented from the background. First the B-component image of navel orange was extracted and built mask, then R-component image was masked by B-component image, thus 100% fruits and background segmentation with intact defects was achieved. Considering false segmentation of defects owing to the lower edge gray values of spherical fruits, an algorithm of fast fruit image edge gray value compensation was advanced. Using this algorithm, six kinds of common defects of navel orange, for a total of 220 images, setting the threshold for 165, the defects of different gray value was successfully segmented at one time. The highest segmentation rate was 100% and the lowest was 79.5%. Test results showed that the segmentation efficiency of the defects was improved as a result of the use of a single threshold.
Number of references:21
Main heading:Surface defects
Controlled terms:Computer vision - Edge detection - Fruits
Uncontrolled terms:Background segmentation - Compensation algorithm - Fruit grading - Gray value - Image edge - Navel orange - Test results
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 821.4 Agricultural Products - 751.1 Acoustic Waves - 741.2 Vision - 951 Materials Science - 741.1 Light/Optics - 723.5 Computer Applications - 716 Telecommunication; Radar, Radio and Television - 421 Strength of Building Materials; Mechanical Properties - 731.6 Robot Applications
DOI:10.3969/j.issn.1002-6819.2009.12.024
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 18>
Accession number:20100812731089
Title:Design of distributed navigation control system for rice transplanters based on controller area network
Authors:Hu, Lian (1); Luo, Xiwen (1); Zhang, Zhigang (1); Zhao, Zuoxi (1)
Author affiliation:(1) Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Guangzhou 510642, China; (2) College of Engineering, South China Agricultural University, Guangzhou 510640, China
Corresponding author:Luo, X.
(xwluo@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:88-92
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A CAN-based distributed control system was developed to improve the reliability of automatic guidance for rice transplanter. This system included a master node and three slave nodes. The master node, which used AT91SAM9261 embedded CPU, utilized RTK GPS data and compass data to generate appropriate control commands. By adopting C8051F040 as the key control chip, three slave nodes realized steering control, speed control and transplanting instrument lever control, respectively. A communication protocol was presented for the distributed control network. Road tracking test and paddy field test were carried out based on SPU-68 rice transplanter. Testing results demonstrated that the system was able to transfer and receive real-time messages reliably. And the transplanter could complete all the field operations, such as tracking trajectory, automatic steering, speed changing and transplanting, etc. Road and paddy field testing results also showed that the line trajectory track errors were less than 0.05 m and 0.2 m, respectively, which basically met the requirements of rice transplanting.
Number of references:16
Main heading:Controllers
Controlled terms:Communication systems - Control system synthesis - Distributed parameter control systems - Global positioning system - Network protocols - Roads and streets
Uncontrolled terms:Automatic guidance - Automatic guidence - Automatic steering - Communication protocols - Communication system control - Control command - Controller area network - Distributed control - Distributed Control System - Distributed navigation - Embedded CPU - Field operation - Key control - Line trajectory - Paddy fields - Rice transplanter - Road tracking - RTK-GPS - Steering control - Testing results - Tracking trajectory
Classification code:732.1 Control Equipment - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 943.3 Special Purpose Instruments - 716.3 Radio Systems and Equipment - 655.2.1 Communication Satellites - 406.2 Roads and Streets - 716 Telecommunication; Radar, Radio and Television
DOI:10.3969/j.issn.1002-6819.2009.12.015
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 19>
Accession number:20100812731133
Title:Postharvest physiology and storage technology of Xinjiang Kashi sweet pomegranate
Authors:Zhu, Huibo (1); Zhang, Youlin (1); Gong, Wenxue (1); Yu, Yueying (1)
Author affiliation:(1) College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
Corresponding author:Zhang, Y.
(youlinzh@snnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:339-344
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The storage technology of Kashi sweet pomegranates was explored by investigating the postharvest physiology under six different treatments. The soluble solids contents, reducing sugar contents, titratable acid contents and ascorbic acid contents were measured for the sweet pomegranates with different treatments. The fresh-cut pomegranate skin was taken to measure the tannin contents, the ascorbic acid oxidase activity and the peroxidase activity. The pericarp browning index and the merchandise fruit rate was measured during the preservation period. The experimental results showed that the postharvest Kashi sweet pomegranates which were fumigated for 1.5 h with 4.5% TBZ at the rate 5 g/m<sup>3</sup> and then each packaged with 0.02-mm-thick plastic bag could keep a merchandise fruit rate of more than 90% after stored for 120 days in a cold storage house with temperature (2±1)°C and relative humidity of 85%-90%. The pomegranates after storage appear generally sweet and sour taste, brightly-colored pomegranates skins and have a high value in merchandise.
Number of references:23
Main heading:Agricultural products
Controlled terms:Atmospheric humidity - Cold storage - Computer crime - Ketones - Organic acids - Plants (botany) - Plastic containers - Sugar (sucrose)
Uncontrolled terms:Ascorbic acids - Browning index - Fresh-cut - Kashi sweet pomegranate - Oxidase activity - Peroxidase activities - Postharvest - Preservation period - Reducing sugars - Relative humidities - Soluble solids content - Storage technology - Titratable acid - Xinjiang
Classification code:822.3 Food Products - 821.4 Agricultural Products - 817.1 Polymer Products - 804.1 Organic Compounds - 723 Computer Software, Data Handling and Applications - 902.3 Legal Aspects - 694.4 Storage - 691 Bulk Handling and Unit Loads - 644.3 Refrigeration Equipment and Components - 461.9 Biology - 443.1 Atmospheric Properties - 694 Packaging
DOI:10.3969/j.issn.1002-6819.2009.12.059
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 20>
Accession number:20100812731096
Title:Design of engine air-fuel ratio test system based on universal exhaust gas oxygen sensor
Authors:Jiang, Yaohua (1); Gu, Ming (1); Cao, Yang (1); Wang, Bin (1)
Author affiliation:(1) Department of Watercraft Engineering, Zhenjiang Watercraft College of People's Liberation Army, Zhenjiang 212003, China
Corresponding author:Jiang, Y.
(winton1999@sohu.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:124-127
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For realizing the accurate feedback control of engine electronic control system on air-fuel ratio and facilitating the diagnosis of engine an air-fuel ratio acquisition-display system and a PC monitor system were developed based on the working principle of universal exhaust gas oxygen (UEGO) sensor. The corresponding relationship between the output voltage and the air-fuel ratio in the system was calibrated. The test systems were also validated on the engine testing bench. The results showed that the systems had high sensitivity and fast response time (100 ms). Meanwhile, the designed systems could show the testing data directly. Those two systems were proposed to be used in the development of engine closed loop air-fuel ratio control and on-board diagnostics (OBD) system.
Number of references:15
Main heading:Monitoring
Controlled terms:Air engines - Calibration - Closed loop control systems - Diesel engines - Electronics industry - Engines - Fuels - Oxygen - Oxygen sensors - Power electronics - Sensors
Uncontrolled terms:Air fuel ratios - Air-fuel ratio - Air-fuel ratio control - Closed loops - Display system - Engine electronic control system - Engine testing - Fast response time - High sensitivity - On-board diagnostics - Output voltages - PC monitors - Test systems - Testing data - Universal exhaust gas oxygen sensor - Working principles
Classification code:715 Electronic Equipment, General Purpose and Industrial - 715.2 Industrial Electronic Equipment - 731.1 Control Systems - 732.2 Control Instrumentation - 801 Chemistry - 801.2 Biochemistry - 804 Chemical Products Generally - 902.2 Codes and Standards - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 961 Systems Science - 714 Electronic Components and Tubes - 462.1 Biomedical Equipment, General - 522 Gas Fuels - 523 Liquid Fuels - 524 Solid Fuels - 612 Engines - 612.2 Diesel Engines - 617.3 Steam Engines - 632.4 Pneumatic Equipment and Machinery - 641 Heat and Mass Transfer; Thermodynamics - 654.2 Rocket Engines - 712 Electronic and Thermionic Materials - 713 Electronic Circuits - 713.5 Other Electronic Circuits
DOI:10.3969/j.issn.1002-6819.2009.12.022
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 21>
Accession number:20100812731124
Title:Reclamation technology on preventing heavy metal pollution from landfill of indigenous zinc smelting areas
Authors:Ao, Ziqiang (1); Yan, Chongling (1); Lin, Wenjie (2); Qu, Liya (2); Liu, Jingchun (1); Guan, Xinxin (1); Wu, Guirong (1)
Author affiliation:(1) School of Life Sciences, Xiamen University, Xiamen 361005, China; (2) Guizhou Research and Designing Institute of Environmental Science, Guiyang 550002, China
Corresponding author:Yan, C.
(ycl@xmu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:285-290
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Due to indigenous zinc smelting, lots of lands were polluted and abandoned in Hezhang County, Guizhou Province. The reclamation of polluted soils is becoming more important to improve environmental protection and to prompt agricultural production in these areas. In the present study, total of nine treatments of different amount of lime (0, 25 and 50 kg/m<sup>2</sup>) was used as isolation layer in the flat slag heap, and then the isolation layer was covered with different amount of non-contamination soil (30, 45 and 60 cm), respectively. During the following two years, bean (Phaseolus angularis), Chinese cabbage (Brassica chinensis), maize (Zea mays) and potato (Solanum tuberosum) were planted, concentrations of some metals (Zn, Pb, Cd) in soils and the edible part of the crops were determined to assess the effects of reclamation by statistical analysis of One-Way ANOVA (LSD). The results indicated that metal concentrations in edible part of the crops were decreased by the treatments of limestone isolation layer; maize had the lowest enrichment factor of heavy metals among the four crops, while Chinese cabbage had the highest content, demonstrating that maize was more suitable to be cultivated compared with the others, lime as isolation layer could significantly reduce the accumulation of heavy metals in the edible part of the crops, and 25 kg/m<sup>2</sup> lime isolation layer combined with 30 cm non-contamination soil cover showed the effective reclamation result.
Number of references:17
Main heading:Soil pollution
Controlled terms:Cadmium - Crops - Land reclamation - Lead - Lime - Metals - Reclamation - Slags - Soils - Zinc - Zinc smelting
Uncontrolled terms:Agricultural productions - Brassica - Chinese cabbage - Enrichment factor - Enrichment factors - Guizhou Province - Heavy metal pollution - Indigenous zinc smelting area - Metal concentrations - Phaseolus angularis - Polluted soils - Reclamation technologies - Soil cover - Solanum tuberosum - Statistical analysis - Zea mays
Classification code:533.2 Metal Refining - 545.3 Steel - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 549.3 Others, including Bismuth, Boron, Cadmium, Cobalt, Mercury, Niobium, Selenium, Silicon, Tellurium and Zirconium - 614.2 Steam Power Plant Equipment and Operation - 804.2 Inorganic Compounds - 821.2 Agricultural Chemicals - 821.4 Agricultural Products - 532.2 Blast Furnaces - 406 Highway Engineering - 412 Concrete - 413 Insulating Materials - 442.2 Land Reclamation - 452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 454.2 Environmental Impact and Protection - 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography
DOI:10.3969/j.issn.1002-6819.2009.12.050
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 22>
Accession number:20100812731083
Title:Evaluation method of soil water distribution uniformity under conditions of field subsurface drip irrigation
Authors:Zai, Songmei (1); Wu, Feng (2); Wen, Ji (3); Wang, Zhaohui (1)
Author affiliation:(1) College of Resources and Environmental Sciences, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) College of Water Resources and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China; (3) Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China
Corresponding author:Wu, F.
(ntggswf@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:51-57
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Uniformity is one of the important indicators for the evaluation of irrigation quality, and soil water distribution uniformity is the ultimate expression of irrigation uniformity. Selection of suitable sampling numbers of soil water is the base for economical and accurate evaluation of soil water distribution uniformity after irrigation. Field measurement of soil moisture distribution was measured in the cotton field under subsurface drip irrigation in Xinjiang Uygur Autonomous Region, 2 days after irrigation when the soil moisture had reached a relative stability. Relationship between sampling numbers and soil moisture distribution characteristics, and soil water distribution uniformity were analyzed. Results showed that the coefficient C<inf>u</inf> of soil water distribution was close to its mean value with increasing of samples. From the quantitative analysis of samples, the mean of C<inf>u</inf> was not obvious change as sample number increase from 15 to 60. Under the condition of experiment, the desirable number of samples should be more than 24 for field soil moisture monitoring and evaluation. There was a significant relevance between C<inf>u</inf> and the distribution uniformity (D<inf>u</inf>). But a certain deviation occured between the coefficients derived from the measured data and that recommended by the United States Department of Agriculture. And this should be taken into account when such exchange formula was used. Using uniform 25-point sampling method, soil water distribution of subsurface drip irrigation in cotton fields was evaluated. Results showed that soil moisture uniformity in the vicinity of drip line (20-40 cm) was lower than that in the upper and below layer of drip line before irrigation, and would increase after irrigation, compared with the upper and lower layers. Soil moisture variation near the drip line is the largest in the soil under subsurface drip irrigation.
Number of references:15
Main heading:Soil surveys
Controlled terms:Agriculture - Cotton - Gene expression - Groundwater - Moisture control - Moisture determination - Moisture meters - Permittivity - Quality control - Sampling - Soil moisture - Subirrigation - Underwater soils - Water distribution systems - Water supply
Uncontrolled terms:Coefficient c - Distribution uniformity - Evaluation Method - Field - Field measurement - Field soil - Irrigation uniformity - Mean values - Measured data - Number of samples - Point sampling - Quantitative analysis - Relative stabilities - Sample number - Soil moisture distribution - Soil water - Soil-water distribution - Subsurface drip irrigation - United states department of agricultures - Xinjiang Uygur autonomous region
Classification code:801 Chemistry - 819.1 Natural Fibers - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 821.4 Agricultural Products - 913.3 Quality Assurance and Control - 922.1 Probability Theory - 944.1 Moisture Measuring Instruments - 944.2 Moisture Measurements - 731.3 Specific Variables Control - 406.2 Roads and Streets - 444.2 Groundwater - 446.1 Water Supply Systems - 461.8.1 Genetic Engineering - 461.9 Biology - 471.1 Oceanography, General - 483.1 Soils and Soil Mechanics - 701 Electricity and Magnetism - 708.1 Dielectric Materials
DOI:10.3969/j.issn.1002-6819.2009.12.009
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 23>
Accession number:20100812731122
Title:Evaluation and decision-making for selecting cultivated land into prime farmland
Authors:Wu, Fei (1); Pu, Lijie (1); Xu, Yan (1); Zhu, Ming (1)
Author affiliation:(1) School of Geography and Ocean Sciences, Nanjing University, Nanjing 210093, China; (2) Territorial Resources Department of Jiangsu, Nanjing 210029, China; (3) Key Laboratory of Land Use Ministry of Land and Resources, Beijing 100029, China
Corresponding author:Pu, L.
(ljpu@nju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:270-277
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Considering that there is not a systematic evaluation method for prime farmland selection and assignation, an evaluation index system was built up including soil quality, grain production, land use status and regional economic level. Aiming at food security, prime farmland protection target of Jiangsu Province was assigned to each county based on a combinatorial evaluation method. The results showed that social and economic factors weighted much more than soil quality and grain production in the assignation. With rapid urbanization and industrialization, most of the counties in Jiangsu Province had reached a precipice of farmland lost and desiderated a transformation of development model to an intensive one. The research would contribute to prime farmland planning in the new run of the land use comprehensive planning.
Number of references:20
Main heading:Farms
Controlled terms:Indexing (of information) - Land use - Planning - Regional planning - Soils - Targets
Uncontrolled terms:Comprehensive planning - Cultivated lands - Development model - Economic factors - Economic level - Evaluation index system - Evaluation Method - Food security - Grain production - Indexing - Jiangsu province - Soil quality - Systematic evaluation
Classification code:912.2 Management - 903.1 Information Sources and Analysis - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 932.1.1 Particle Accelerators - 483.1 Soils and Soil Mechanics - 403.2 Regional Planning and Development - 403 Urban and Regional Planning and Development - 442.2 Land Reclamation
DOI:10.3969/j.issn.1002-6819.2009.12.048
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 24>
Accession number:20100812731102
Title:Intelligent monitoring system for ultraviolet sterilization room based on Doppler shift
Authors:Jiang, Tao (1); Zhang, Yunwei (1); He, Fang (1)
Author affiliation:(1) Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650093, China
Corresponding author:Zhang, Y.
(zhangyunwei72@gmail.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:156-160
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reduce the risk of operators irradiated by the ultraviolet (UV) lamp in sterilization room, an intelligent monitoring system for ultraviolet sterilization room was designed based on Doppler shift. A biological recognition method by feature detection of human body on the move was presented, and the mathematical model of Doppler shift was established. The sample of biological recognition module was produced, and the experimental platform employing SPCE061A microcontroller units (MCU) were developed. The experiments of biological recognition were carried out. The experimental results show that the recognition probability of the intelligent monitoring system can reach 99.58%. This can meet the requirement in actual application.
Number of references:15
Main heading:Speech recognition
Controlled terms:Doppler effect - Lighting - Mathematical models - Mathematical operators - Monitoring - Sterilization (cleaning) - Ultrasonic applications - Ultrasonics - Ultraviolet lamps
Uncontrolled terms:Biological recognition - Doppler shift - Doppler shifts - Experimental platform - Feature detection - Human bodies - Intelligent monitoring systems - Microcontroller unit - Recognition probability - Ultra-violet - Ultraviolet sterilization
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 753.1 Ultrasonic Waves - 753.3 Ultrasonic Applications - 802.3 Chemical Operations - 822.2 Food Processing Operations - 921 Mathematics - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 751.5 Speech - 462.1 Biomedical Equipment, General - 707 Illuminating Engineering - 707.2 Electric Lamps - 751.1 Acoustic Waves - 711.1 Electromagnetic Waves in Different Media - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 723.5 Computer Applications
DOI:10.3969/j.issn.1002-6819.2009.12.028
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 25>
Accession number:20100812731091
Title:Comparative analysis of quantitative sieving methods of quality evaluation indicators for rotating sprinklers
Authors:Zhao, Hua (1); Xu, Di (1); Gong, Shihong (1)
Author affiliation:(1) National Center for Quality Supervision and Test of Agricultural Irrigation and Drainage Equipment, Beijing 100044, China; (2) China Institute of Water Resources and Hydropower Research, Beijing 100044, China
Corresponding author:Zhao, H.
(zhaohua@iwhr.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:97-101
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Quantitative sieving for the quality evaluation indicators of water saving irrigation products can achieve the purpose of evaluating the product quality only by representative indicators. According to the test data, quality evaluation indicators for rotating sprinklers were sieved by means of cluster analysis and principal component analysis. Effectiveness and applicability of two methods were given in comparative analysis. Results showed that the quantitative sieving results of two methods are basically similar, and spraying range and height have the maximum correlation among seven common quality evaluation indicators for rotating sprinklers. Spraying height could be deleted, while spray range should be reserved in the quality evaluation indicators for the common sprinklers with middle and low spray ranges for field irrigation. The cluster analysis focused on the correlation between two indicators, whereas principal component analysis focused on the correlation among total indicators, therefore the latter was seemly more effective for quantitative sieving of quality evaluation indicators for the rotating sprinklers and other water saving irrigation products.
Number of references:19
Main heading:Quality control
Controlled terms:Cluster analysis - Hose - Principal component analysis - Rotation - Sprinkler systems (fire fighting) - Sprinkler systems (irrigation) - Water analysis - Water conservation
Uncontrolled terms:Comparative analysis - Evaluation indicators - Maximum correlations - Product quality - Quality evaluation - Sprinkler systems - Test data - Water-saving irrigation
Classification code:931.1 Mechanics - 922.2 Mathematical Statistics - 922 Statistical Methods - 914.2 Fires and Fire Protection - 913.3 Quality Assurance and Control - 821.1 Agricultural Machinery and Equipment - 801 Chemistry - 723 Computer Software, Data Handling and Applications - 619.1 Pipe, Piping and Pipelines - 601.1 Mechanical Devices - 445.2 Water Analysis - 444 Water Resources - 403.1 Urban Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.017
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 26>
Accession number:20100812731116
Title:Experiments on spraying characteristics of biodiesel using phase Doppler particle analyzer
Authors:Ye, Lihua (1); Shi, Aiping (2); Yuan, Yinnan (1); Sun, Ping (1); Zhang, Chunfeng (1)
Author affiliation:(1) School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China; (2) School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Shi, A.
(shap@ujs.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:240-244
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The combustion process of diesel has a direct effect on engine power, economy and emissions. Moreover, the atomization quality of fuel injection is the most important factor affecting combustion process. Therefore, spray characteristics of bio-diesel, diesel and the mixture of bio-diesel and diesel were studied in this paper. Spray field of bio-diesel and mixed fuel in a model cylinder were measured by PDPA (Phase Doppler Particle Analyzer). Test data such as distribution of velocity, diameter of oil drop and concentration in the spray field were obtained. The results show that the diameter of nozzle orifice gives a great impact on atomization beyond the core area of the spray. The smaller the orifice diameter, the better the spray atomization. The injection pressure have little influences on the spray field of bio-diesel. Compared with fossil diesel fuel, bio-diesel performed worse spray characteristics. SMD (Sauter mean diameter) of bio-diesel is bigger than that of fossil diesel fuel under the same condition. The higher the pump speed is, the smaller the diameter and fluctuation velocity of droplet are.
Number of references:13
Main heading:Diesel engines
Controlled terms:Atomization - Biodiesel - Combustion - Diesel fuels - Jets - Orifices - Spray nozzles - Two phase flow
Uncontrolled terms:As distribution - Atomization quality - Combustion pro-cess - Core area - Engine power - Fluctuation velocities - Injection pressures - Mixed fuel - Nozzle orifice - Oil drops - Orifice diameters - Phase Doppler particle analyzer - Phase Doppler particle analyzer(PDPA) - Pump speed - Sauter mean diameters - Spray atomization - Spray characteristics - Spray field - Test data
Classification code:521.1 Fuel Combustion - 523 Liquid Fuels - 612.2 Diesel Engines - 619.1 Pipe, Piping and Pipelines - 631.1 Fluid Flow, General - 802.3 Chemical Operations
DOI:10.3969/j.issn.1002-6819.2009.12.042
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 27>
Accession number:20100812731126
Title:Quantitative analysis of cultivated land safety in Zhangjiagang City based on BP-MC networks
Authors:Qian, Yurong (1); Li, Jianlong (1); Wang, Weiyuan (3); Yang, Feng (1); Yang, Qi (1); Zhang, Jie (1)
Author affiliation:(1) School of Life Science, Nanjing University, Nanjing 210093, China; (2) Software College, Xinjiang University, Urumqi 830000, China; (3) Xinjiang Military Area Command, Urumqi 830042, China
Corresponding author:Li, J.
(jlli2008@nju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:299-305
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In recent years, cultivated land was occupied continually, which had threatened the grain safety of city. Remote sensing is a powerful tool for protecting cultivated land by means of accurate inspecting the urban expansion and land use cover and change in time. Combined with the principle of general Monte Carlo, the relationships among cultivated land, road, urban expansion, GDP and industry economic structure were analyzed deeply using BP artificial neural networks based on TM remote sensing images, land use map and yearbook of Zhangjiagang City in several years. The results demonstrated that the cultivated land area decreased about 2.5% per year in the past ten years, however the general agriculture output had a small rebound after 2002, this attributed to the government optimized policy to land use and restructure of agriculture and industry. The expansion trends of Zhangjiagang City was the spread of multi-core along the road. Cultivated land within 2 km far from the main road and city zone was most likely changed into the urban area, especially within 500 meters. The rapid development of economic resulted in an increased transformation probability of cultivated land to urban land. However, transformation probability decreased gradually with the balance between urban land and cultivated land. So the relationship between transformation probability and GDP present an inverted "U" curve. In conclusion, BP-MC networks deal with training set of a large number of pixels, this avoids artificial neural network stepping into the local minimum point, and it is an effective method to analyze the drive factors of urban expansion quantitatively.
Number of references:22
Main heading:Neural networks
Controlled terms:Agriculture - Backpropagation - Economics - Expansion - Image reconstruction - Land use - Monte Carlo methods - Probability - Remote sensing - Roads and streets
Uncontrolled terms:Artificial Neural Network - BP artificial neural network - Cultivated lands - Decrease of cultivated land - Economic structure - Local minimum point - Main roads - MONTE CARLO - Multi core - Quantitative analysis - Rapid development - Remote sensing images - Training sets - Urban areas - Urban expansion
Classification code:971 Social Sciences - 741 Light, Optics and Optical Devices - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 911.2 Industrial Economics - 922.1 Probability Theory - 922.2 Mathematical Statistics - 951 Materials Science - 731.1 Control Systems - 723.2 Data Processing and Image Processing - 461.1 Biomedical Engineering - 442.2 Land Reclamation - 406.2 Roads and Streets - 403 Urban and Regional Planning and Development - 723.4 Artificial Intelligence
DOI:10.3969/j.issn.1002-6819.2009.12.052
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 28>
Accession number:20100812731121
Title:Effect of composting on volatilization and degradation of organo-chlorine pesticide
Authors:Wang, Yujun (1); Dou, Sen (1); Zhang, Xiaomei (1); Li, Wenpeng (1)
Author affiliation:(1) College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118, China
Corresponding author:Dou, S.
(dousen@tom.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:265-269
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Aerobic composting treatments using chicken manure and corn straw as the composting material at high temperature were performed in order to study the effect of composting on the volatilization and degradation of HCH and DDT. The study show that 20.6% of HCH and 13.8% of DDT volatilized due to high temperature and ventilation during the period of composting, which accelerated the volatilization of HCH and DDT to gas phase within 30 days. Apart from the effect of high temperature and ventilation on the volatilization of organochlorine pesticides, the degradation rates of HCH and DDT in the treatment without microbial inoculums were 37.2% and 14.9%, respectively. The degradation rates of HCH and DDT in the treatment with microbial inoculums were 42.1% and 24.2%, respectively. The significant difference between the treatment without microbial inoculums and the one with microbial inoculums was found. The degradation rates of α-HCH and θ-HCH were higher than those of β-HCH and γ-HCH. The degradation rates of pp'-DDT and op'-DDT were higher than those of pp'-DDD and pp'-DDE. The results indicate that high temperature and ventilation accelerated the volatilization of HCH and DDT to the gas phase during the composting and the biochemical reactions in this process contributed to the degradation of organochlorine pesticides such as HCH and DDT.
Number of references:16
Main heading:Degradation
Controlled terms:Biodegradation - Chlorine - Gases - Manures - Pesticide effects - Ventilation - Waste treatment
Uncontrolled terms:Aerobic composting - Biochemical reactions - Chicken manure - Corn straws - Degradation rate - Dichlorodiphenyltrichloroethane - Gasphase - Hexachlorocyclohexane - Hexachlorocyclohexanes - High temperature - Microbial inoculums - Organochlorine pesticides
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 821.5 Agricultural Wastes - 821.2 Agricultural Chemicals - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 801.2 Biochemistry - 643.5 Ventilation - 461.8 Biotechnology - 454.2 Environmental Impact and Protection - 453.1 Water Pollution Sources - 452.4 Industrial Wastes Treatment and Disposal - 452.3 Industrial Wastes
DOI:10.3969/j.issn.1002-6819.2009.12.047
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 29>
Accession number:20100812731084
Title:Laboratory simulation experiment on nitrogen transformation and distribution under condition of film hole irrigation with urea solution
Authors:Cheng, Dongjuan (1); Zhao, Xinyu (2); Fei, Liangjun (3)
Author affiliation:(1) Hydropower College, Hebei Engineering University, Handan 056021, China; (2) Department of Hydraulic Engineering, Technology College of Nanchang, Nanchang 330099, China; (3) Water Resource Research Institute, Xi'an University of Technology, Xi'an 710048, China
Corresponding author:Cheng, D.
(handanchengdongjuan@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:58-62
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For improving the use efficiency of nitrogen fertilizer and decreasing the losses of nitrogen fertilizer, the rules of nitrogen transformation and distribution under film hole irrigation with urea solution were studied through laboratory simulation experiment. The results showed that the ammonium nitrogen mainly distributed around film hole and decreased with the increasing of distance from film hole. The ammonium nitrogen content increased gradually in the early 0-5 d and decreased subsequently after the fifth day. The nitrification was weak before the seventh day and the nitrate nitrogen content in the top soil layer was lower than background value. The nitrification was enhanced after the seventh day. The nitrate nitrogen content in the top soil layer was more than background value; the nitrate nitrogen content in the horizontal direction was more than in the vertical direction after the seventh day. During the course of urea transformation, the decrement of ammonium nitrogen was far more than the increment of nitrate nitrogen. The research results provide reference for further study of film hole irrigation and fertilizer application.
Number of references:16
Main heading:Urea fertilizers
Controlled terms:Ammonium compounds - Denitrification - Experiments - Fertilizers - Irrigation - Metabolism - Nitrates - Nitrification - Nitrogen - Oxidation - Soils - Urea
Uncontrolled terms:Ammonium nitrogen - Background value - Distribution - Fertilizer applications - Film hole irrigation - Film holes - Laboratory simulation - Nitrate nitrogen - Nitrogen transformations - Research results - Top-soil layer - Urea solutions - Use efficiency - Vertical direction
Classification code:901.3 Engineering Research - 821.3 Agricultural Methods - 821.2 Agricultural Chemicals - 815.1.1 Organic Polymers - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 804 Chemical Products Generally - 802.2 Chemical Reactions - 801.2 Biochemistry - 483.1 Soils and Soil Mechanics - 461.9 Biology
DOI:10.3969/j.issn.1002-6819.2009.12.010
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 30>
Accession number:20100812731082
Title:Characteristics of grape growth under drip irrigation condition in extremely arid regions
Authors:Yang, Yanfen (1); Wang, Quanjiu (1); Bai, Yungang (3); Cai, Junshe (4); Zeng, Chen (2)
Author affiliation:(1) Water Resources Institute, Xi'an University of Technology, Xi'an 710048, China; (2) State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest Agriculture and Forestry University, Yangling 712100, China; (3) Xinjiang Institute of Water Resources and Hydropower Research, Urumqi 830049, China; (4) Xinjiang Grapes and Melons Research and Development Centre, Shanshan 838201, China
Corresponding author:Wang, Q.
(wquanjiu@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:45-50
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Soil moisture is different under different layout style of drip irrigation pipeline, which will affect crop growth and its yield. In this study, soil moisture and water physiological indexes under different treatments during grape ripeness were measured and analyzed in order to investigate the effect of layout style of pipeline and technical parameters of drip irrigation system on grape's growth, yield and select the optimal technique parameters of drip irrigation that suitable for TuHa Basin. The results show that the treatment with three surface drip irrigation pipelines, outlet flow of 2.7 L/h and the distance of 30 cm between the emitters has the optimal results. Under the condition of this treatment, soil moisture, grape's water physiological indexes and yield all reach a higher level.
Number of references:20
Main heading:Irrigation
Controlled terms:Arid regions - Fruits - Groundwater - Moisture determination - Permittivity - Physiological models - Pipelines - Soil moisture
Uncontrolled terms:Crop growth - Drip irrigation - Drip irrigation systems - Layout style of pipeline - Optimal results - Outlet flows - Physiological indices - Surface drip irrigations - Tuha Basin
Classification code:901.4 Impact of Technology on Society - 821.4 Agricultural Products - 821.3 Agricultural Methods - 708.1 Dielectric Materials - 701 Electricity and Magnetism - 944.2 Moisture Measurements - 619.1 Pipe, Piping and Pipelines - 461.1 Biomedical Engineering - 444.2 Groundwater - 444 Water Resources - 443 Meteorology - 483.1 Soils and Soil Mechanics
DOI:10.3969/j.issn.1002-6819.2009.12.008
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 31>
Accession number:20100812731094
Title:Influence of elastic deformation on lubricating characteristics of port plate pair of axial piston pump
Authors:Hu, Jibin (1); Zou, Yunfei (1); Li, Xiaojin (1); Lin, Shuo (1)
Author affiliation:(1) National Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, China
Corresponding author:Zou, Y.
(zyfbackstreet@bit.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:114-118
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Considering the magnitude of elastic deformation was the same as the film thickness of port plate pair under high pressure, the model of lubrication was established by the theory of elastohydrodynamic lubrication. The influence of elastic deformation on lubricating characteristics was analyzed using finite difference method. The results showed that the average film thickness increased by 14.48%, but the largest film pressure decreased by 18.6% in the elastic case. And the film load capacity and leakage increase obviously, but frictional torque decreases obviously in the condition of small film thickness. By contraries, the influence of elastic deformation on lubricating characteristics could be neglected in the condition of large film thickness beyond the film thickness 15 μm. The study lays a foundation for design and research on port plate pair of high-pressure axial piston pump.
Number of references:22
Main heading:Elastohydrodynamic lubrication
Controlled terms:Elastic deformation - Magnetic films - Reciprocating pumps
Uncontrolled terms:Axial piston pump - Film pressure - Frictional torque - High pressure - Load capacity - Piston pump - Port plate - Port plate pair
Classification code:421 Strength of Building Materials; Mechanical Properties - 607.2 Lubrication - 618.2 Pumps - 708.4 Magnetic Materials - 818 Rubber and Elastomers
DOI:10.3969/j.issn.1002-6819.2009.12.020
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 32>
Accession number:20100812731097
Title:Recognition method of position and attitude of eggplant fruits based on improved generalized Hough transforms
Authors:Yao, Lijian (1); Ding, Weimin (2); Zhang, Peipei (1); Liu, Jianjun (1)
Author affiliation:(1) College of Engineering, Zhejiang Forestry University, Hangzhou 311300, China; (2) College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author:Yao, L.
(yao_njau@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:128-132
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Taking eggplant fruits as examples, one method was introduced for recognizing position and attitude of object based on improved generalized Hough transforms (IGHT). Scaling and rotation operations were added to the parameter index list establishment, which enlarged the representative ranges of sample. And the method of "shape similarity degree" was adopted to primarily select scaling index and rotation index of images awaiting recognization, which could effectively reduce the searching scope. Properly increasing step size of gradient index could avoid excessive dispersion of array in accumulator, and make it easy to search the final reference point coordinates. The experiment demonstrated that the depth recovering results for large target and small target were decreased by 4.0 and 7.9 percentage points, respectively, by using improved generalized Hough transforms, and this method is feasible and effective to recognize different pose and partially occluded eggplant fruits.
Number of references:18
Main heading:Hough transforms
Controlled terms:Computer vision - Rotation
Uncontrolled terms:Generalized Hough transform - Gradient indexes - Object based - Parameter list - Percentage points - Recognition methods - Reference points - Rotation index - Rotation operations - Scaling index - Shape similarity - Small targets - Step size
Classification code:601.1 Mechanical Devices - 723.5 Computer Applications - 731.6 Robot Applications - 741.2 Vision - 921.3 Mathematical Transformations - 931.1 Mechanics
DOI:10.3969/j.issn.1002-6819.2009.12.023
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 33>
Accession number:20100812731113
Title:Sustainability evaluation on CDM project of biomass direct combustion power generation based on emergy theory
Authors:Luo, Yuhe (1); Ding, Lixing (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
Corresponding author:Ding, L.
(lxding@vip.sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:224-227
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The sustainability evaluation on the clean development mechanism (CDM) project of biomass direct combustion power generation required quantitative analysis from the aspects such as economic, social and environmental benefits. The emergy analysis of the CDM project was conducted and its emergy sustainability evaluation indexes were established with the emergy theory. As the case of 25 MW biomass direct combustion power generation CDM project in Central China, the system's sustainable performance was evaluated. The results showed that the CDM project could bring the benefit of 2.51 million US dollars annually for greenhouse gas (GHG) emission reduction. Because the benefit effectively increased the emergy yield ratio and reduced the environmental load of the power generation system, the system had not only been higher competitiveness, the emergy sustainability indexes of the system could be increased to 6.45 which can cause the system to be in the potential and sustainable development process for a long time.
Number of references:16
Main heading:Continuum damage mechanics
Controlled terms:Biomass - Combustion - Competition - Emission control - Energy policy - Global warming - Greenhouse gases - Leakage (fluid) - Smoke - Strategic planning - Sustainable development
Uncontrolled terms:Biomass direct combustion power generation - CDM projects - Clean Development Mechanism - Clean development mechanism (CDM) - Emergy analysis - Emergy theory - Emergy yield ratio - Environmental benefits - Environmental loads - Evaluation index - Power generation systems - Quantitative analysis - Sustainable performance - US dollar
Classification code:801.3 Colloid Chemistry - 804 Chemical Products Generally - 804.1 Organic Compounds - 805.1.1 Biochemical Engineering - 619.1 Pipe, Piping and Pipelines - 821.5 Agricultural Wastes - 911.2 Industrial Economics - 912.2 Management - 931.1 Mechanics - 901.4 Impact of Technology on Society - 525.6 Energy Policy - 443.1 Atmospheric Properties - 451 Air Pollution - 451.1 Air Pollution Sources - 451.2 Air Pollution Control - 421 Strength of Building Materials; Mechanical Properties - 452.1 Sewage - 483.1 Soils and Soil Mechanics - 521.1 Fuel Combustion - 525.1 Energy Resources and Renewable Energy Issues - 452.3 Industrial Wastes
DOI:10.3969/j.issn.1002-6819.2009.12.039
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 34>
Accession number:20100812731103
Title:Salinity forecasting of saline soil based on ANN and hyperspectral remote sensing
Authors:Wang, Jing (1); Liu, Xiangnan (3); Huang, Fang (1); Tang, Jilong (4); Zhao, Lengbing (5)
Author affiliation:(1) Key Laboratory of Vegetation Ecology of Education Ministry, Institute of Grassland Science, Northeast Normal University, Jilin 130024, China; (2) Key Laboratory for Wetland Ecology and Vegetation Restoration of National Environmental Protection, Northeast Normal University, Jilin 130024, China; (3) Information Engineering College, China University of Geosciences(Beijing), Beijing 100083, China; (4) College of Opto-electronic Engineering, Changchun University of Science and Technology, Jilin 130022, China; (5) Academy of Forestry Inventory and Planning of Jilin, Jilin 130022, China
Corresponding author:Wang, J.
(jingwang9966@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:161-166
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Soil salinization is a major problem of land degradation in arid and semi-arid agricultural area. It is crucial to detect the salinity of saline soils accurately and dynamicly in time in order to prevent soil salinization and achieve sustainable development in agriculture. Taking Changling County western Songnen Plain, as the example, this paper constructed remote sensing predictive model of saline soils using hyperspectral data. The salinity was measured by electric conduction method, and hyperspectral data was collected using ASD spectrometer. Derivative transformation of spectral reflectance was used to select best spectral bands which can represent the salinity of saline soils, e.g. 550, 720, 760, 820 and 940 nm. The best performance was achieved in the 5-6-1 architecture (R<sup>2</sup> = 0.895, RMSE = 0.089) in 72 different architectures in the three- and four-layer networks. Compared with traditional regression model (R<sup>2</sup> = 0.81, RMSE = 0.25), the method combining hyperspectral data with artificial neural network can improve the predictive accuracy of saline soil, showing that artificial neural network is prominently advanced in establishing the relationships between spectral reflectance and soil parameters.
Number of references:26
Main heading:Neural networks
Controlled terms:Electric load forecasting - Forestry - Geologic models - Reflection - Regression analysis - Remote sensing - Salinity measurement - Soils - Strategic planning
Uncontrolled terms:Agricultural areas - Artificial Neural Network - Electric conduction - HyperSpectral - Hyperspectral Data - Hyperspectral remote sensing - Land degradation - Layer networks - Predictive accuracy - Predictive models - Regression model - Salination - Saline soil - Semi arid - Soil parameters - Soil salinization - Songnen plain - Spectral band - Spectral reflectances
Classification code:943.3 Special Purpose Instruments - 723.4 Artificial Intelligence - 731.1 Control Systems - 741.1 Light/Optics - 821.0 Woodlands and Forestry - 912.2 Management - 922.2 Mathematical Statistics - 711 Electromagnetic Waves - 483.1 Soils and Soil Mechanics - 481.1 Geology - 471.4 Seawater, Tides and Waves - 461.1 Biomedical Engineering - 444 Water Resources - 706.1 Electric Power Systems
DOI:10.3969/j.issn.1002-6819.2009.12.029
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 35>
Accession number:20100812731130
Title:Optimization of conditions for organochlorine pesticide residues removal in apples using ultrasonic
Authors:Yue, Tianli (1); Zhou, Zhengkun (1); Yuan, Yahong (1); Gao, Zhenpeng (1); Zhang, Xiaorong (1)
Author affiliation:(1) College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Yue, T.
(yuetl@nwsuaf.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:324-330
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:China is the largest country in apple-producing in the world, but its apple export just accounts for less than 10% of world trade market. One of the main constraints is the pesticide residues in apples. The ultrasonic removal of organochlorine pesticide residues in apples was studied, and the response surface method was applied to analyze the influence of ultrasonic power, degradation time and degradation temperature on the removal rate. The influence of main quality indexes in apples caused by ultrasonic wave was also studied. The results indicated that: (1) The optimum removal conditions of organochlorine pesticide residues in apples were as follows: the ultrasonic power 609.16 W, the removal time 70.46 min, the removal temperature 15.45°C, and under this condition, the removal rate of organochlorine pesticide residues in theory could reached to 64.32%; (2) The rigidity of apples was not significant between the 17 groups of sonication samples and CK; whereas, the total sugar, total acid had a significant impact, but did not exceed national standards and apple quality standards of major exporter. Ultrasonic is an easy and quick handling technology, and can remove organochlorine pesticide residues effectively, enhance the safety of apple greatly. It is easy and available to couple with the cleaning, grading and waxing of fresh apple at present, and its industrialization has very broad prospects.
Number of references:25
Main heading:Fruits
Controlled terms:Degradation - International trade - Pesticides - Sugar (sucrose) - Surface properties - Ultrasonics
Uncontrolled terms:Apple fruits - Degradation temperatures - Degradation time - National standard - Optimum removal conditions - Organochlorine pesticide residues - Pesticide residue - Quality indices - Quality standard - Removal rate - Removal time - Response surface method - Response Surface Methodology - Significant impacts - Ultrasonic power - World trade
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 911.4 Marketing - 902.3 Legal Aspects - 822.3 Food Products - 951 Materials Science - 821.4 Agricultural Products - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 753.1 Ultrasonic Waves - 821.2 Agricultural Chemicals
DOI:10.3969/j.issn.1002-6819.2009.12.056
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 36>
Accession number:20100812731101
Title:Prediction of forage quality of maize stover by near infrared spectroscopy
Authors:Tai, Shujing (1); Zhang, Renhe (1); Shi, Juntong (1); Xue, Jiquan (1); Zhang, Xinghua (1); Ma, Guosheng (1); Lu, Haidong (1)
Author affiliation:(1) College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Xue, J.
(xjq2934@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:151-155
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reliably, conveniently and rapidly analyze and evaluate forage quality of maize stover, the samples of maize stover from different varieties and treatments of density, nitrogenous fertilizer and water were used to establish near infrared reflectance spectroscopy (NIRS) calibration models of in vitro dry matter digestion (IVDMD), acid detergent fiber (ADF), neutral detergent fiber (NDF) and water soluble carbohydrate (WSC) of maize stover with near infrared reflectance spectroscopy (NIRS) technique, partial least square regression (PLS) and data pretreatment of 1st derivative+mean center+Multiple scatter correction. The results showed that determination coefficients of calibration (R<inf>cal</inf><sup>2</sup>) about those models were 0.9906, 0.9870, 0.9931 and 0.9802 and those of cross validation (R<inf>cv</inf><sup>2</sup>) and validation (R<inf>val</inf><sup>2</sup>) were 0.9593(0.9549), 0.9413(0.9353), 0.9678(0.9519) and 0.9342(0.9191) for IVDMD, ADF, NDF and WSC, respectively. Standard error of calibration, cross validation and prediction (SEC, SECV and SEP) ranged from 0.935 to 1.904. All values of relative percent differences (RPD) were greater than three. It demonstrated that these calibration models could be used to rapidly and accurately predict forage quality of maize stover and screen various samples in maize breeding.
Number of references:28
Main heading:Infrared spectroscopy
Controlled terms:Calibration - Carbohydrates - Detergents - Fibers - Infrared devices - Infrared transmission - Near infrared spectroscopy - Reflection - Water analysis
Uncontrolled terms:Dry matters - In-vitro - Maize stover - Near infrared reflectance spectroscopy - Water soluble carbohydrate - Water-soluble carbohydrates
Classification code:819.4 Fiber Products - 902.2 Codes and Standards - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 941 Acoustical and Optical Measuring Instruments - 941.4 Optical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 817 Plastics and Other Polymers: Products and Applications - 445.2 Water Analysis - 711 Electromagnetic Waves - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 801 Chemistry - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds - 812 Ceramics, Refractories and Glass
DOI:10.3969/j.issn.1002-6819.2009.12.027
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 37>
Accession number:20100812731095
Title:Braking ability of vehicle united brake based on permanent magnet type eddy current retarder
Authors:Zhao, Xiaobo (1); Ji, Changying (1); Zhou, Wei (2); Zhao, Guozhu (1); Lu, Zhixiong (1)
Author affiliation:(1) College of Engineering, Nanjing Agricultural University, Nanjing 210032, China; (2) Guangzhou Isuzu Bus Co., Ltd, Guangzhou 510507, China
Corresponding author:Ji, C.
(chyji@njau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:119-123
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to investigate the practical braking ability of united brake system with permanent magnet type eddy current retarder and exhaust brake in vehicle, the advantages and disadvantages of permanent magnet type eddy current retarder and exhaust brake were analyzed, respectively. The experiments and theoretical analysis on the braking ability of united brake with permanent magnet type eddy current retarder and exhaust brake for vehicle were carried out under the conditions of level roads and hillside paths. The results show that the united brake can make the braking distance shortened, the deceleration increased, the braking ability of the vehicle improved on the level road, and the united brake system can meet the demands for vehicle to travel on steeper slope at steady and economic speed. All of above that can provide reference for application of the permanent magnet type eddy current retarder and exhaust brake in vehicle.
Number of references:11
Main heading:Brakes
Controlled terms:Eddy currents - Magnetic devices - Permanent magnets - Roads and streets - Vehicles
Uncontrolled terms:Brake systems - Braking distance - Exhaust brake - In-vehicle - Permanent magnet type eddy current retarder - Steeper slopes - United brake
Classification code:708.4 Magnetic Materials - 704.1 Electric Components - 704 Electric Components and Equipment - 714 Electronic Components and Tubes - 701.1 Electricity: Basic Concepts and Phenomena - 432 Highway Transportation - 406.2 Roads and Streets - 602 Mechanical Drives and Transmissions
DOI:10.3969/j.issn.1002-6819.2009.12.021
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 38>
Accession number:20100812731110
Title:Research and implementation on reactive power optimization intelligent system for 10 kV distribution line
Authors:Piao, Zailin (1); Tan, Dongming (1); Guo, Dan (1)
Author affiliation:(1) College of Information and Electrical Engineering, ShenYang Agricultural University, Shenyang 110161, China
Corresponding author:Piao, Z.
(piaozl@china.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:206-210
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The theoretical study on rural distribution network reactive power optimization and single compensation device was reported in lot of literature, but the study of reactive power optimization intelligent control system for 10 kV lines in the rural power distribution network is still blank. This paper makes reactive power optimization intelligent system come true, which was based on the current status of rural network reactive power compensation, 10 kV distribution lines integrated long-range communications technology and network technology, directly remote monitoring, management and automation in the dispatch room, through the upper and lower digital technology. The system implementation showes that each substation exports power factor always fluctuated between 0.95-0.98, which is essentially a straight line. System implementation explored a new way to achieve intelligent electicity network.
Number of references:14
Main heading:Reactive power
Controlled terms:Distributed parameter networks - Electric network analysis - Electric power factor - Electric substations - Intelligent systems - International trade - Optimization
Uncontrolled terms:10 kV line - Current status - Digital technologies - Digital upper and nether computer - K-V distribution - Long-range communications - Network technologies - Power distribution network - Power factors - Reactive power compensation - Reactive power optimization - Remote monitoring - Rural distribution networks - Rural networks - Straight lines - System implementation - Theoretical study
Classification code:921.5 Optimization Techniques - 911.4 Marketing - 902.3 Legal Aspects - 723.4 Artificial Intelligence - 706.1 Electric Power Systems - 706 Electric Transmission and Distribution - 703.1.1 Electric Network Analysis - 703.1 Electric Networks - 701.1 Electricity: Basic Concepts and Phenomena
DOI:10.3969/j.issn.1002-6819.2009.12.036
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 39>
Accession number:20100812731079
Title:Relationship between spatio-temporal variability of soil moisture and nutrients and crop yield
Authors:Cai, Shouhua (1); Xu, Ying (1); Wang, Junsheng (1); Zhang, Lihua (1); Jing, Guofang (2)
Author affiliation:(1) College of Conservancy and Hydraulic Engineering, Yangzhou University, Yangzhou 225009, China; (2) College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China
Corresponding author:Cai, S.
(caishouhua@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:26-31
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:It is very important for the implementation of precision agriculture to study the relationship between crop yield and spatio-temporal variability of soil moisture and nutrients, which requires improving the methods of studying such relationship to speed up the process of precision agriculture.The relationship between crop yield and spatial variability of soil moisture and nutrients at the seedling stage and grain-filling stage of winter wheat was analyzed with both geostatistics and traditional statistics, and a method to integratedly evaluate soil moisture and nutrient status through integrated indicator rate was proposed. The relationship between integrated indicator rate and crop yield showed integrated indicator rate was significantly correlated with crop yield in the range of 67.8 m, and the greater integrated indicator rate was, the greater yield was. Their kriging maps indicated the distribution of integrated indicator rate was similar to that of yield. Integrated indicator rate could explain 58.4% of yield variation which was 17.4% more than the result of multivariate step regression analysis. Both multivariate step regression analysis of soil moisture and nutrients and crop yield and simple regression analysis of integrated indicator rate and crop yield indicated that soil moisture and nutrients could explain 33.3%-58.4% of yield variation which was 0-5.2% more than only considering soil nutrients, and meanwhile soil moisture and nutrients of both seedling stage and grain-filling stage could explain 41%-58.4% of yield variation, 4.3%-16.5% more than considering soil moisture and nutrients of either seedling stage or grain-filling stage. Integrated indicator rate provides a method for describing spatio-temporal variability of soil moisture and nutrients and their relationships with crop yield. Its kriging map is a useful tool of integratedly evaluating soil moisture and nutrient status, and provides an available reference for implementation of precision agriculture by comparing with the kriging map of yield.
Number of references:18
Main heading:Nutrients
Controlled terms:Crops - Grain (agricultural product) - Groundwater - Metal analysis - Moisture determination - Permittivity - Regression analysis - Soil moisture - Statistics
Uncontrolled terms:Crop yield - Geo-statistics - Grain filling - Integrated indicator rate - Kriging - Nutrient status - Precision Agriculture - Simple regression analysis - Soil nutrients - Spatial variability - Spatiotemporal variability - Speed-ups - Step regression - Winter wheat
Classification code:944.2 Moisture Measurements - 922.2 Mathematical Statistics - 822.3 Food Products - 821.4 Agricultural Products - 821.2 Agricultural Chemicals - 801 Chemistry - 708.1 Dielectric Materials - 701 Electricity and Magnetism - 531 Metallurgy and Metallography - 483.1 Soils and Soil Mechanics - 461.9 Biology - 454.3 Ecology and Ecosystems - 444.2 Groundwater
DOI:10.3969/j.issn.1002-6819.2009.12.005
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 40>
Accession number:20100812731087
Title:Numerical simulation on gravitational erosion of small watershed system in Loess Plateau
Authors:Yu, Guoqiang (1); Li, Zhanbin (1); Li, Peng (1); Zhang, Xia (3); Zhou, Binghua (1); Zhao, Hongbin (4)
Author affiliation:(1) Northwest Key Laboratory of Water Resource and Environment Ecology, Xi'an University of Technology, Xi'an 710048, China; (2) State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China; (3) Research and Design Institute of Environmental Science of Shaanxi Province, Xi'an 710061, China; (4) School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
Corresponding author:Yu, G.
(yuguoqiang23@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:74-79
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To study the mechanism of gravitational erosion, pre-treatment program for modeling of complex multilayered terrain using fish language was compiled and the modeling was developed secondly. The finite difference software Flac<sup>3D</sup> was used to study the mechanism of gravitational erosion, to analyze the development process of gravitational erosion, and to numerical simulate on displacement field and stress field of small watershed in Loess Plateau concerning on the mechanical stabilization. The results showed that the three-dimensional model established could factually demonstrate topography and geomorphology of the small watershed and had good simulation effectiveness. The process of gravitational erosion was divided into three stages, the development stage, maturity stage and stable stage. Gravitational erosion of the traceability area was the most serious; the geometric shape of concave slope conductived to the stability that slowing down the occurrence degree of gravitational erosion. The modeling method and numerical simulation results could be applied to study gravitational erosion that offer scientific basis for the deeply promoting the development of erosion and sediment yield time-space law and comprehensive controlling soil erosion of small watershed and constructing the ecological environment.
Number of references:12
Main heading:Three dimensional
Controlled terms:Geomorphology - Gravitation - Landforms - Slope stability - Stresses - Watersheds
Uncontrolled terms:Development process - Development stages - Displacement field - Ecological environments - Finite difference - Geometric shape - Loess Plateau - Maturity stages - Mechanical stabilization - Modeling - Modeling method - Multi-layered - Numerical simulate - Numerical simulation - Pre-Treatment - Sediment yields - Small watersheds - Software FLAC 3D - Soil erosion - Stress field - Three stages - Three-dimensional model - Time-space
Classification code:902.1 Engineering Graphics - 723.5 Computer Applications - 483.1 Soils and Soil Mechanics - 481.1.1 Geomorphology - 931.5 Gravitation, Relativity and String Theory - 481.1 Geology - 421 Strength of Building Materials; Mechanical Properties - 408.1 Structural Design, General - 406.2 Roads and Streets - 444.1 Surface Water
DOI:10.3969/j.issn.1002-6819.2009.12.013
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 41>
Accession number:20100812731135
Title:Effect of natamycin treatment on physiological metabolism and quality of postharvest sweet cherry
Authors:Jiang, Aili (1); Hu, Wenzhong (1); Li, Hui (1); Tian, Mixia (1); Fan, Shengdi (1)
Author affiliation:(1) Key Laboratory of Biotechnology and Bioresources Utilization, College of Life Science, Dalian Nationalities University, Dalian 116600, China
Corresponding author:Hu, W.
(hwz@dlnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:351-356
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to explore the effects of natamycin combined with V<inf>c</inf> treatment on the physiological metabolism and quality of postharvest sweet cherry and its mechanism, fresh sweet cherries were dipped in 10 mg/L natamycin solution, 100 mg/L V<inf>c</inf> solution, as well as 10 mg/L natamycin + 100 mg/L V<inf>c</inf> solution for 10 min, respectively, and then transferred to 5°C condition for storage. During the period of storage, respiration rate and the activities of some disease resistance-related enzyme such as polyphenol oxidase (PPO), peroxidase (POD), phenylalanine ammonia-lyase (PAL) were measured. Meanwhile, fruit color, firmness, V<inf>c</inf> and phenolic substances content as well as decay rate of quality index were analyzed. The results indicated that natamycin treatments with/without V<inf>c</inf> extended the storage period of up to 10 d or more. In particular, treatment with 10 mg/L natamycin + 100 mg/L V<inf>c</inf> significantly increased PPO, POD, PAL activity and the polyphenol content, reduced fruit respiration rate and decay rate, and maintained a high V<inf>c</inf> content and firmness. The individual natamycin treatment also had a certain role in regulating metabolism and preservation, while the sole V<inf>c</inf> treatment had no obvious effects on disease control. These data suggest that natamycin combined with V<inf>c</inf> treatment may be used as natural preservatives in the practical application of sweet cherry storage and transportation.
Number of references:17
Main heading:Quality control
Controlled terms:Amino acids - Customer satisfaction - Decay (organic) - Disease control - Food preservation - Metabolism - Phenols - Physiology - Quality assurance - Total quality management
Uncontrolled terms:Decay rate - Disease resistance - Fruit color - Natamycin - Natural preservatives - Phenylalanine ammonia-lyase - Polyphenol content - Polyphenol oxidase - Postharvest - Quality indices - Respiration rate - Storage periods - Sweet cherries
Classification code:922.2 Mathematical Statistics - 913.3 Quality Assurance and Control - 912.2 Management - 912 Industrial Engineering and Management - 822.2 Food Processing Operations - 811.2 Wood and Wood Products - 804.1 Organic Compounds - 802.2 Chemical Reactions - 801.2 Biochemistry - 461.9 Biology - 461.7 Health Care - 461.6 Medicine and Pharmacology - 461 Bioengineering and Biology
DOI:10.3969/j.issn.1002-6819.2009.12.061
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 42>
Accession number:20100812731092
Title:Performance test on corn thresher with different-speed threshing parts
Authors:Li, Xinping (1); Gao, Lianxing (2)
Author affiliation:(1) College of Vehicle and Motive Power Engineering, Henan University of Science and Technology, Luoyang 471003, China; (2) College of Engineering, Shenyang Agricultural University, Shenyang 110161, China
Corresponding author:Gao, L.
(lianxinggao@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:102-106
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to optimize parameters of threshing system of corn thresher with different speeds threshing parts, and minimize mechanical damage of corn seeds in the course of threshing, an experiment of second order regression orthogonal rotation design was carried out with rotating speed of straight roller, feeding quantity and kernel water contents as influence factors and broken rate of kernel as major criterion. The results of testing showed that relation of water content and kernel broken rate was quadratic function, and the broken rate of kernel was increased with the increasing or reducing of the water contents. The broken rate of kernel was increased with the increasing of feeding quantity. When the feeding quantity was less than 0.9 kg/s, the broken rate of kernel was stable and unaffected by the feeding quantity; the broken rate of kernel was also increased with the increasing of the rotating speed of straight roller. There was significantly interactive effect for broken rate of kernel among the three influence factors. The value of kernel broken rate reached minimum with kernel water contents 18%, feeding quantity 0.9 kg/s and the rotating speed of straight roller 200 r/min. This research has important meanings for future research on mechanism of seed corn thresher and parameters optimization of threshing system, and it also is useful for developing threshing technology with low damage.
Number of references:16
Main heading:Water content
Controlled terms:Agriculture - Curricula - Experiments - Feeding - Optimization - Rollers (machine components) - Rotating machinery - Rotation - Seed - Speed
Uncontrolled terms:Broken rate - Corn seeds - Different speed - Influence factors - Interactive effect - Low damages - Mechanical damages - Parameters optimization - Performance tests - Quadratic function - Rotating speed - Second orders
Classification code:921.5 Optimization Techniques - 901.3 Engineering Research - 901.2 Education - 821.4 Agricultural Products - 931.1 Mechanics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 601.2 Machine Components - 601.1 Mechanical Devices - 444 Water Resources - 691.2 Materials Handling Methods
DOI:10.3969/j.issn.1002-6819.2009.12.018
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 43>
Accession number:20100812731088
Title:Establishment of conceptual soil erosion model and application in purple soil watershed
Authors:Wang, Ping (1); Zhu, Axing (2); Cai, Qiangguo (3); Liu, Huiping (1)
Author affiliation:(1) School of Geography, Being Normal University, Beijing 100875, China; (2) State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; (3) Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; (4) Department of Geography, University of Wisconsin-Madison, Madison, WI 53706, United States
Corresponding author:Wang, P.
(wangp@lreis.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:80-87
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Conceptual soil erosion model can depict basic watershed processes yet does not require intensive data. Erosion-related parameters in the current conceptual erosion models are determined either by calibration based on long series of sediment data at watershed outlets or by referring to the related empirical parameter values. This paper presented a conceptual soil erosion model which did not need long series of sediment records at watershed outlets to calibrate parameters. The model incorporated a conceptual soil erosion module, which was based on the empirical relationship between the discharge and sediment yield observed from experimental plots, into a physically-based distributed hydrology model, WetSpa Extension. The model had been tested in three watersheds in the purple soil region in China. The results of simulated discharge and sediment at outlets as well as spatial distribution of erosion rates were satisfactory. The model was also proved to be applicable in similar watersheds nearby and useful in assessing the effect of soil and water conservation practices. This conceptual model provides a new option for areas with sparse sediment data series at watershed outlets, and it has a great potential in assisting watershed management.
Number of references:16
Main heading:Geologic models
Controlled terms:Landforms - Sedimentology - Size distribution - Soil conservation - Soil mechanics - Soils - Water - Water conservation - Water management - Watersheds
Uncontrolled terms:Conceptual model - Data series - Empirical parameters - Erosion models - Erosion rates - Hydrology models - New options - Sediment yields - Simulated discharges - Soil and water conservation - Soil erosion - Soil-erosion model - Soil-soil - Spatial distribution - Watershed management - Watershed process
Classification code:933.1 Crystalline Solids - 931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 821.3 Agricultural Methods - 804.2 Inorganic Compounds - 531.2 Metallography - 483.1 Soils and Soil Mechanics - 481.1 Geology - 446 Waterworks - 444.1 Surface Water - 444 Water Resources - 423 Non Mechanical Properties and Tests of Building Materials - 403.1 Urban Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.014
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 44>
Accession number:20100812731107
Title:Leaf area index retrieval of winter wheat using artificial neural network
Authors:Ma, Yinchi (1); Yan, Guangjian (1); Ding, Wen (2); Wang, Yuezhi (2)
Author affiliation:(1) State Key Laboratory of Remote Sensing Science, Beijing Normal University, Beijing 100875, China; (2) Fisheries Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100068, China
Corresponding author:Yan, G.
(gjyan@bnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:187-192
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In practices, measuring leaf area index (LAI) in large area scale is very difficult. Therefore, retrieving LAI quantitatively based on remote sensing technology is concerned by many researchers. We proposed a BP-ANN based method to retrieve winter wheat LAI using surface reflectance data of MODIS. The MODIS pixel is assumed to be composed by crop canopy and bare soil. The SAILH (Light Scattering by Arbitrarily Inclined Leaves including the Hotspot-effect) model was used to simulate the directional reflectance of crop canopy, and the bare soil was assumed to be Lambertian. Series LAI maps of winter wheat in Shunyi District, Beijing were retrieved using this method during April in 2001. The research indicated that this method can be used well to retrieve LAI in large area scale, which is valuable to monitor crop growth.
Number of references:20
Main heading:Neural networks
Controlled terms:Crops - Forestry - Geologic models - Monitoring - Radiometers - Reflection - Remote sensing - Soils - Spectrometers
Uncontrolled terms:Artificial Neural Network - Bare soils - Crop canopy - Crop growth - Data monitoring - Hot spot - Lambertian - Leaf area index - MODIS data - Remote sensing technology - Shunyi District - Surface reflectance - Winter wheat
Classification code:821.4 Agricultural Products - 941 Acoustical and Optical Measuring Instruments - 941.3 Optical Instruments - 821.0 Woodlands and Forestry - 942 Electric and Electronic Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 944.7 Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 801 Chemistry - 481.1 Geology - 483.1 Soils and Soil Mechanics - 711 Electromagnetic Waves - 461.1 Biomedical Engineering - 723.4 Artificial Intelligence - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 731.1 Control Systems
DOI:10.3969/j.issn.1002-6819.2009.12.033
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 45>
Accession number:20100812731115
Title:Process parameters of biodiesel production through alkaline catalyzed transesterification of rapeseed oil
Authors:Huang, Caixia (1); Liu, Ronghou (1)
Author affiliation:(1) Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (2) Environment and Plant Protection College, South China University of Tropical Agriculture, Danzhou 571737, China
Corresponding author:Liu, R.
(liurhou@sjtu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:234-249
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Biodiesel production by transesterification process employing alkaline catalyst has been paid to a lot of attention due to its high conversion rate. In this work, sodium hydroxide (NaOH) catalyzed transesterification of rapeseed oil with methanol was carried out in a bench scale experimental reactor. The effects of molar ratio of methanol to rapeseed oil (4:1-8:1), catalyst concentration (0.5%-2%), reaction temperature (30-70°C) and reaction time (30- 150 min) on the conversion rate of transesterification were investigated. Composition of biodiesel was determined by using GC/MS analysis. Results showed that the suitable parameters for reactions were as follows: temperature 50-60°C, molar ratio of methanol to rapeseed oil 6:1, NaOH concentration 1% and reaction time 60 min with highest conversion rate of transesterification 96.7%. In addition, it was found that biodiesel was mainly consisted of 9-octadecenoic acid (z)-, methyl esters, 13-docosenoic acid (z)-, methyl esters, 9, 12-octadecadienioc acid, methyl esters, 11-eicosenoic acid, methyl esters and 9, 12, 15-octadecatrienoic acid, methyl esters. Among which, the relative content of 9-octadecenoic acid (z)-, methyl esters was the highest one, reaching 50.30%.
Number of references:23
Main heading:Biodiesel
Controlled terms:Acids - Catalysis - Catalysts - Chemical analysis - Conversion efficiency - Esterification - Esters - Experimental reactors - Methanol - Oleic acid - Sodium - Transesterification - Vegetable oils
Uncontrolled terms:Alkaline catalysts - Biodiesel production - Catalyst concentration - Conversion rates - GC/MS - GC/MS analysis - Methyl esters - Molar ratio - NaOH concentration - Process parameters - Rapeseed oil - Reaction temperature - Reaction time - Sodium hydroxides
Classification code:804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 822.3 Food Products - 801 Chemistry - 549.1 Alkali Metals - 525.5 Energy Conversion Issues - 523 Liquid Fuels - 621 Nuclear Reactors
DOI:10.3969/j.issn.1002-6819.2009.12.041
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 46>
Accession number:20100812731085
Title:Effect of wastewater irrigation on soil hydrological properties in reed marsh
Authors:Xia, Jiangbao (1); Liu, Qing (1); Xie, Wenjun (1); Sun, Jingkuan (1); Liu, Qing (1); Lu, Zhaohua (1)
Author affiliation:(1) Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou, Shandong 256603, China; (2) Institute of Restoration Ecology, China University of Mining and Technology, Beijing 100083, China
Corresponding author:Lu, Z.
(lu-zhh@263.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:63-68
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To study the effect of papermaking wastewater irrigation on soil hydrological properties in saline reed field, different wastewater irrigation frequencies were employed in the saline reed field of Yellow River Delta. Soil infiltration course and hydrological properties were determined in field and laboratory. After wastewater irrigation, the change of the soil pH value, soil salt content and soil hydrologic-physical properties were observed. The results were showed that: 1) After wastewater irrigation, the mean reduction of soil pH value was 6.0%. In 1 irrigation time and 2 irrigation times treatments, soil salt content decreased by 11.7%, and soil salt content increased by 12.6% in 3-4 irrigation times treatments. 2) After irrigation, the mean reduction of soil bulk density was 6.5%, and the mean increment of soil total porosity was 18.1%. With the irrigation frequency increasing, soil density was decreased and soil total porosity was increased. 3) Soil infiltration course of reed field irrigated by wastewater fitted Horton infiltration model well. After wastewater irrigation, the first infiltration rate decreased, but the stable infiltration rate promoted with the wastewater irrigation frequency increasing. 4) Soil water-holding capacity was increased by wastewater irrigation. The maximum water-holding capacity in capillary was 90.15 mm in the treatment of irrigation 3 irrigations, and the maximum water-holding capacity in non-capillary was 4.15 mm in treatment of 4 irrigations. The papermaking wastewater irrigation had obvious benefits to reduce soil salinity, improve soil hydrologic-physical properties and enhance soil infiltration and water-holding capacity. However, there was the significant different in soil properties between treatments. These results provide the scientific basis for determining suitable irrigation frequency and the irrigation volume of papermaking wastewater in saline reed field of Yellow River Delta, which is of great significance to the exploitation and utilization of papermaking wastewater resources.
Number of references:17
Main heading:Geologic models
Controlled terms:Biochemical oxygen demand - Irrigation - Papermaking - pH effects - Physical properties - Rivers - Seepage - Soil mechanics - Soil moisture - Underwater soils - Wastewater - Water recycling - Water resources
Uncontrolled terms:Hydrologic-physical properties - Hydrological properties - In-field - Infiltration models - Infiltration rate - Irrigation frequency - Papermaking wastewater - Reeds - Soil bulk density - Soil density - Soil hydrological properties - Soil infiltration - Soil pH - Soil property - Soil salinity - Soil salt content - Soil water - Total porosity - Wastewater irrigation - Water holding capacity - Yellow River delta
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 453 Water Pollution - 453.2 Water Pollution Control - 471.1 Oceanography, General - 481.1 Geology - 483.1 Soils and Soil Mechanics - 801.1 Chemistry, General - 811.1.1 Papermaking Processes - 821.3 Agricultural Methods - 452.4 Industrial Wastes Treatment and Disposal - 407 Maritime and Port Structures; Rivers and Other Waterways - 407.2 Waterways - 441 Dams and Reservoirs; Hydro Development - 452.3 Industrial Wastes - 444 Water Resources - 445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 444.1 Surface Water
DOI:10.3969/j.issn.1002-6819.2009.12.011
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 47>
Accession number:20100812731131
Title:Technology for producing protein feed from corn stover by multi-strain distributional degradation
Authors:Chen, He (1); Yu, Jianjun (1); Shu, Guowei (1); Zhang, Qiang (1)
Author affiliation:(1) College of Life Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
Corresponding author:Yu, J.
(79662980@qq.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:331-334
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The technology of producing protein feed from distributional degradation of corn stalk by multi-strain was studied. Most of lignin was degraded through solid fermentation by Phanerochaete chrysosporium. Then Trichoderma viride was vaccinatated for further degradation of lignocellulose. Protein feed was produced by adding Candida utilis. The results manifested that the optimal technical conditions were as follows: Trichoderma viride inoculation time was the10th day; fermention time was 12 days; After the bran was added into stalk by the ratio of 1:3.0, the best technical conditions were yeast inoculation 8%; mixture ratio of solid to liquid 1:3.0; addition volume of ammonium sulfate 2.5%, continuous fermentation time 72 h. Under the optimal conditions, the content of crude protein was up to 25.3%. The results show that distributional degradation technology of producing protein feed by multi-strain provides a new method for utilization of corn stalk.
Number of references:15
Main heading:Proteins
Controlled terms:Ammonium compounds - Degradation - Fermentation - Lignin
Uncontrolled terms:Ammonium Sulfate - Candida utilis - Continuous fermentation - Corn - Corn stalk - Corn stover - Crude proteins - Mixture ratio - Multi-strain - Optimal conditions - Phanerochaete chrysosporium - Technical conditions - Trichoderma viride
Classification code:811.3 Cellulose, Lignin and Derivatives - 805.1.1 Biochemical Engineering - 804.2 Inorganic Compounds - 815.1.1 Organic Polymers - 804.1 Organic Compounds - 801.2 Biochemistry - 461.8 Biotechnology - 802.2 Chemical Reactions
DOI:10.3969/j.issn.1002-6819.2009.12.057
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 48>
Accession number:20100812731136
Title:Comparison of fresh-keeping effects of Portunus trituberculatus by different package methods
Authors:Zheng, Dan (1); Duan, Qingyuan (2); Zhu, Lihua (1); Zhong, Huiying (1); Yang, Jiafeng (1); Wang, Jie (1)
Author affiliation:(1) Ningbo Inspection and Monitor Centre for Fishery Environment and Product Quality, Ningbo 315012, China; (2) Ningbo Academy of Ocean and Fishery, Ningbo 315012, China
Corresponding author:Duan, Q.
(duanqynb@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:357-360
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Portunus trituberculatus is a famous aquatic variety in Ningbo city and melanin is often found in storage period. It is a big problem to prohibit melanin phenomenon and prolong storage period of Portunus trituberculatus. The study was made by three package methods: vacuum package, coating package and modified atmosphere package(MAP). The fresh-keeping effects of Portunus Trituberculatus were investigated. The results showed the efects were better when air components and ratios of MAP were CO<inf>2</inf> 50% N<inf>2</inf> 50%. Compared with coating package and MAP, vacuum packing could inhibit the production of melanin in Portunus Trituberculatus gills and legs and prolong storage period effectively at 0-4°C.
Number of references:16
Main heading:Packaging
Controlled terms:Coatings - Experiments - Vacuum
Uncontrolled terms:Air components - Fresh-keeping effect - Modified atmosphere package - Storage periods - Vacuum package
Classification code:539 Metals Corrosion and Protection; Metal Plating - 633 Vacuum Technology - 694.1 Packaging - 813.2 Coating Materials - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2009.12.062
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 49>
Accession number:20100812731105
Title:Nutrition information extraction of rape canopy based on computer-vision technology
Authors:Yuan, Daojun (1); Liu, Anguo (1); Yuan, Baozhong (1); Hu, Liyong (1); Liu, Zhixiong (1); Zhang, Fangfang (1)
Author affiliation:(1) College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (2) School of Environment Technology, Zhejiang Forestry University, Hangzhou 311300, China
Corresponding author:Liu, A.
(agl@mail.hzau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:174-179
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to study the possibility of monitoring the rape canopy' nutrition information based on computer-vision technology in the outdoor ray, the computer-vision system was designed, and the images of the rape canopy were got and segmented. Through the statistical analysis of stepwise regression, the perfect models of chlorophyll content, total-N content, and C/N ratio were found and have a good predictive ability. The result showed that it is possible to estimate the physiological indexes of rape canopy, including chlorophyll content, total-N content, and C/N ratio, with digital camera under the conditions of field natural light.
Number of references:28
Main heading:Computer vision
Controlled terms:Cameras - Chlorophyll - Digital image storage - Image segmentation - Imaging systems - Nutrition - Porphyrins
Uncontrolled terms:C/N ratio - Chlorophyll contents - Computer vision system - Information Extraction - N content - Natural light - PERFECT model - Physiological indices - Predictive abilities - Statistical analysis - Stepwise regression
Classification code:741.2 Vision - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 746 Imaging Techniques - 801.2 Biochemistry - 804.1 Organic Compounds - 822.3 Food Products - 741.1 Light/Optics - 461.7 Health Care - 722.1 Data Storage, Equipment and Techniques - 722.4 Digital Computers and Systems - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 731.6 Robot Applications - 741 Light, Optics and Optical Devices
DOI:10.3969/j.issn.1002-6819.2009.12.031
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 50>
Accession number:20100812731128
Title:Process optimization of electron beam radiation on chilled pork
Authors:Bai, Yanhong (1); Zhao, Dianbo (1); Mao, Duobin (1); Jia, Chunxiao (2); Qian, Xuemei (3); Yang, Gongming (1)
Author affiliation:(1) Food Engineering and Biotechnology College, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (2) Material and Chemical Engineering College, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (3) The Ningbo Branch of Ordnance Science Institute of China, Ningbo 315103, China; (4) College of Food Science, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Yang, G.
(ygm@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:312-317
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Effects of electron beam radiation on sterilization and color of chilled pork(14-15 cm in length, 7-8 cm in breadth, 2-2.5 cm in height) were studied by using response surface analysis through taking electron beam energy and dose as factors, colony form unit, value of redness, and value of lightness as responses. The results were as follows: There was an interaction between electron beam energy and dose, but electron beam energy played a leading role in sterilization. When dose ranged from 3.09 to 3.63 kGy and electron beam energy ranged from 2.37 to 3.51 MeV, the colony form unit would drop 2 logarithm units. The value of redness was minimum value when dose was 2.38 kGy and electron beam energy was 2.64 MeV. The value of redness was close to the control when the dose ranged from 2.24 to 2.99 kGy and the electron beam energy ranged from 2.28 to 2.91 MeV. The value of lightness was maximum and closed to the control as dose was 2.67 kGy and electron beam energy was 2.55 MeV. The value of lightness would become more acceptable when the dose ranged from 2.05 to 2.92 kGy and electron beam energy ranged from 2.09 to 2.8 MeV. The results showed that the optimal parameters of electron beam radiation on chilled pork were 2.8 MeV and 3.09 kGy. This study would provide the technical basis for application of electron beam radiation on pork industry.
Number of references:18
Main heading:Electron beams
Controlled terms:Algebra - Color - Electron beam lithography - Electron optics - Electrons - Meats - Optimization - Radiation effects - Sterilization (cleaning) - Surface analysis
Uncontrolled terms:Chilled pork - Electron beam energy - Electron beam radiation - Minimum value - Optimal parameter - Pork industry - Process optimization - Radiation sterilization - Response surface analysis
Classification code:951 Materials Science - 802.3 Chemical Operations - 822.2 Food Processing Operations - 822.3 Food Products - 921.1 Algebra - 921.5 Optimization Techniques - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 745.1 Printing - 423 Non Mechanical Properties and Tests of Building Materials - 462.1 Biomedical Equipment, General - 622.2 Radiation Effects - 744 Lasers - 701.1 Electricity: Basic Concepts and Phenomena - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 711 Electromagnetic Waves
DOI:10.3969/j.issn.1002-6819.2009.12.054
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 51>
Accession number:20100812731108
Title:Prediction of slope infiltration based on artificial neural networks by free search
Authors:Li, Xinhu (1); Zhang, Zhanyu (1); Yang, Jie (2); Zhang, Guohua (3); Wang, Bin (4); Wang, Chao (1)
Author affiliation:(1) College of Water Conservancy and Hydropower Engineering, Hehai University, Nanjing 210098, China; (2) Soil and Water Conservation Research Institute of Jiangxi Province, Nanchang 330000, China; (3) China Irrigation and Drainage Development Center, Beijing 100054, China; (4) College of Water Conservancy and Building Engineering, Northeast Agricultural University, Harbin 150030, China
Corresponding author:Li, X.
(lixinhu721@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:193-197
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Attempts of using FSBP were made to predict infiltration of natural rainfall on the slop surface of red soil under different land use patterns. Seven indexes such as precipitation, maximum rainfall intensity, rainfall duration, initial soil water content, soil bulk density, soil porosity and underlaying surface were selected as input variable, and the amount of infiltration as output variable. Results show that the mean relative error of the prediction is 11.08%, and t test and regression analysis indicates that the predicted value differs just slightly from the observed value and their correlation coefficient was 0.9715. The model is quite high in accuracy and stability, and serves as useful tool in further research on prediction of infiltration of nature rainfall on slopes.
Number of references:15
Main heading:Neural networks
Controlled terms:Backpropagation - Land use - Rain - Regression analysis - Seepage - Soil mechanics - Soil moisture - Statistical tests - Underwater soils - Water content
Uncontrolled terms:Artificial Neural Network - Artificial neural networks - Correlation coefficient - Free Search - Input variables - Land use pattern - Mean relative error - Output variables - Rainfall duration - Rainfall intensity - Red soils - Soil bulk density - Soil Porosity - Soil water content - T-tests - Underlaying surface
Classification code:922.2 Mathematical Statistics - 723.4 Artificial Intelligence - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 461.1 Biomedical Engineering - 444 Water Resources - 443.3 Precipitation - 442.2 Land Reclamation - 441 Dams and Reservoirs; Hydro Development - 407 Maritime and Port Structures; Rivers and Other Waterways - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.034
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 52>
Accession number:20100812731127
Title:Analysis of rocky desertification landscape pattern change in Karst plateau area based on GIS
Authors:Zhang, Panpan (1); Hu, Yuanman (1); Li, Xiuzhen (1); Xiao, Duning (1); Yin, Jie (1); Li, Yangbing (3)
Author affiliation:(1) Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China; (3) School of Geography and Biology, Guizhou Normal University, Guiyang 550001, China
Corresponding author:Hu, Y.
(huym@iae.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:306-311
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:As one of the most serious geo-ecological disasters in Karst areas in Southwestern China, rocky desertification has become one of the key and difficult research issues. Taking the Houzhaihe Valley in Puding County, Guizhou Province, Southwestern China as an example, the landscape pattern changes of Karst rocky desertification in the recent 18 years in Karst plateau area were studied from the perspective of different rocky desertification levels, based on 3 series of remote sensing images (TM images of 1987 and 1995 and SPOT-5 image of 2004), and applying GIS technique and statistics analysis methods. Results indicated that, as a whole landscape, the intensity and rate of rocky desertification land were increasing in the recent 18 years. The increasing rate of rocky desertification were 6.55 hm<sup>2</sup>/a from 1987 to 1995, and 29.64 hm<sup>2</sup>/a from 1995 to 2004. Different rocky desertification levels had shown different change tendencies. The area of light rocky desertification land reduced at first (from 1987 to 1995) and then increased (from 1995 to 2004), while the area of moderate and severe rocky desertification land increased continuously from 1987 to 2004.
Number of references:17
Main heading:Weathering
Controlled terms:Climatology - Geographic information systems - Image reconstruction - Information systems - Land use - Landforms - Remote sensing
Uncontrolled terms:Area-based - Guizhou Province - Karst areas - Landscape pattern change - Landscape pattern changes - Remote sensing images - Research issues - Statistics analysis - TM image
Classification code:903.2 Information Dissemination - 802.2 Chemical Reactions - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 723.3 Database Systems - 903.3 Information Retrieval and Use - 723.2 Data Processing and Image Processing - 443 Meteorology - 442.2 Land Reclamation - 421 Strength of Building Materials; Mechanical Properties - 403 Urban and Regional Planning and Development - 481.1 Geology
DOI:10.3969/j.issn.1002-6819.2009.12.053
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 53>
Accession number:20100812731123
Title:Effect of drought process on natural production function of cultivated land
Authors:Zhao, Yuanyuan (1); He, Chunyang (1); Yao, Hui (3); Huang, Qingxu (1); Yang, Yang (1)
Author affiliation:(1) State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China; (2) College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China; (3) Shandong Province Heze Construction Bureau, Heze 274000, China
Corresponding author:He, C.
(hcy@bnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:278-284
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Assessing the effect of drought process on the production function objectively is helpful to cultivated land conservation. The effect of drought on production function of cultivated land in Beijing was evaluated. Firstly, the drought conditions were characterized by the surface wetting index (SWI), and the typical drought periods were identified using Mann-Kendall testing method. Then natural potential productivity of non-changed cultivated land was calculated with meteorological data using Thornthwaite Memorial model. Finally, the effect of drought on natural potential productivity of cultivated land was analyzed. Main conclusions were as follows: From 1951 to 2006, the SWI decreased with some fluctuation. The drought was significant during the periods of 1979-1984 and 1998-2006. Annual mean potential productivity was 1043 g/(m<sup>2</sup>·a) in 1979, 912 g/(m<sup>2</sup>·a) in 1984, 1 085 g/(m<sup>2</sup>·a) in 1998, and 872 g/(m<sup>2</sup>·a) in 2006. The natural potential productivity in Tongzhou County was bigger than those in other counties, but that in Yanqing County was the smallest. The drought had great impacts on natural potential productivity. The total potential productivity loss exceeded 10% during the period of 1979-1984, and accounted for nearly 20% during the period of 1998-2006. Therefore, the government should simultaneously take into account the quantity and distribution of the cultivated land, and the impacts of climatic fluctuation especially the drought on the production function in the cultivated land management.
Number of references:37
Main heading:Drought
Controlled terms:Conservation - Land use - Productivity - Surface testing - Wetting
Uncontrolled terms:Annual mean - Climatic fluctuations - Cultivated lands - Drought conditions - Drought periods - Mann-Kendall - Meteorological data - Natural potential - Potential productivity - Production function - Productivity surfaces - Surface wetting - Testing method
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 913.1 Production Engineering - 802.3 Chemical Operations - 454 Environmental Engineering - 444 Water Resources - 443.3 Precipitation - 442.2 Land Reclamation - 423.2 Test Methods - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.049
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 54>
Accession number:20100812731114
Title:Effect of metal elements on sawdust fast-pyrolysis
Authors:Niu, Yanqing (1); Wang, Xuebin (1); Tan, Houzhang (1); Xu, Tongmo (1); Hui, Shien (1); Zhao, Qinxin (1); Zhou, Qulan (1)
Author affiliation:(1) State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Corresponding author:Niu, Y.
(yqniu001@yahoo.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:228-233
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Influence of metal elements such as Al/Ca/Fe/K/Na/Zn on the pyrolysis rate and production of CO and CH<inf>4</inf> was investigated using Fourier Transform Infrared Analyzer (FTIR) in the process of sawdust fast-pyrolysis in an entrained flow reactor. The results show that the addition of metal elements inhibits the production of CO/CH<inf>4</inf>, and the inhibiting ability order is Fe<inf>2</inf>O<inf>3</inf>>ZnO>NaCl> CaO>KCl>Al<inf>2</inf>O<inf>3</inf>. The addition of Al<inf>2</inf>O<inf>3</inf>/Fe<inf>2</inf>O<inf></inf>/ZnO shortens the escaping time of CO and CH<inf>4</inf>, especially for Fe<inf>2</inf>O<inf>3</inf>. The statistical analysis suggests that the addition of metal elements generally decreases the reaction rate in the process of biomass fast-pyrolysis, and the reaction rate order is no-addition>Al<inf>2</inf>O<inf>3</inf>> Fe<inf>2</inf>O<inf>3</inf>>ZnO>KCl>CaO>NaCl.
Number of references:15
Main heading:Fourier transforms
Controlled terms:Aluminum - Biomass - Carbon monoxide - Fourier transform infrared spectroscopy - Metals - Methane - Pyrolysis - Reaction rates - Sodium chloride - Thermogravimetric analysis - Zinc oxide
Uncontrolled terms:Addition of Al - CO and CH - Entrained Flow Reactor - Fourier transform infrared - FTIR - Metal elements - Methane pyrolysis - Pyrolysis rate - Statistical analysis - ZnO
Classification code:804.1 Organic Compounds - 804.2 Inorganic Compounds - 805.1.1 Biochemical Engineering - 821.5 Agricultural Wastes - 921.3 Mathematical Transformations - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 931.1 Mechanics - 802.2 Chemical Reactions - 482.2 Minerals - 522 Gas Fuels - 525.1 Energy Resources and Renewable Energy Issues - 531 Metallurgy and Metallography - 541.1 Aluminum - 801 Chemistry - 801.4 Physical Chemistry
DOI:10.3969/j.issn.1002-6819.2009.12.040
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 55>
Accession number:20100812731080
Title:Applicability of FAO56 and ASCE Penman-Monteith equations for reference crop evapotranspiration calculation on turf grass
Authors:Xu, Junzeng (1); Peng, Shizhang (1); Zhang, Xingnan (1); Ding, Jiali (2); Wang, Weiguang (1)
Author affiliation:(1) State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; (2) Bureau of Water Conservancy, Nantong 226006, China
Corresponding author:Peng, S.
(szpeng@hhu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:32-37
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reveal the difference between hourly reference crop evapotranspiration(ET<inf>0</inf>) calculated by FAO56 Penman- Monteith equation and that by ASCE Penman-Monteith , as well as the 24-hour accumulated daily ET<inf>0</inf>, well watered lysimeter experiment were carried out on turf grass. Hourly ET<inf>0</inf> and 24-hour accumulated daily ET<inf>0</inf> were calculated based on hourly meteorological data and evaluated by using daily observed grass evapotranspiration derived from well watered lysimeter experiment. There was a certain difference between ET<inf>0</inf> calculated by FAO56 Penman-Monteith equation and that by ASCE Penman-Monteith equation, and the difference was more significant when the ET<inf>0</inf> values were relative higher. Hourly ET<inf>0</inf> were tested to be lower for FAO56 Penman-Monteith equation than for ASCE Penman-Monteith equation in daytime, but just reversed at night. That was ascribed to the difference in Cd values. It was a pity to say that the equation mended by ASCE could not result in improvement in hourly ET<inf>0</inf> calculation, when the 24-hour accumulated daily ET<inf>0</inf> were compared with observed daily grass evapotranspiration. Daily ET<inf>0</inf> calculated by Penman-Monteith equation based on meteorological data at daily time step were test to be the most consistent with that by lysimeter observed. Further evaluation of either FAO56 Penman-Monteith equation or ASCE Penman-Monteith equation was urgent in China, based on hourly or long series daily observed grass evapotranspiration.
Number of references:22
Main heading:Water supply
Controlled terms:Crops - Evapotranspiration - Lysimeters - Soil surveys
Uncontrolled terms:Asce penman-monteith equations - Crop evapotranspiration - Lysimeter experiments - Meteorological data - Penman-Monteith - Penman-Monteith equations - Time step - Turf grass - Turf-grasses
Classification code:821.4 Agricultural Products - 802.3 Chemical Operations - 631.1 Fluid Flow, General - 943.3 Special Purpose Instruments - 483.1 Soils and Soil Mechanics - 444.1 Surface Water - 406.2 Roads and Streets - 446.1 Water Supply Systems
DOI:10.3969/j.issn.1002-6819.2009.12.006
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 56>
Accession number:20100812731129
Title:Effect of plasma on omethoate residue degradation in apple and Chinese cabbage
Authors:Wang, Shiqing (1); Meng, Juan (1); Zhang, Yan (1); Shi, Lei (1); Pu, Chuanfen (1); Shao, Huanxia (1)
Author affiliation:(1) Food Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, China; (2) Qingdao Key Laboratory of Modern Agricultural Quality and Safety Engineering, Qingdao 266109, China
Corresponding author:Wang, S.
(wangshiqing@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:318-323
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To obtain a new method of pesticide residue degradation in fruits and vegetables, the effect and influence factors of omethoate residue degradation Chinese cabbage and apple were studied by using plasma. The results showed that plasma had an excellent effect on omethoate residue-degraded in Chinese cabbage and apple. The omethoate could be degraded by over 95% within 1.5 minutes. Besides, the effect of plasma on omethoate residue degradation in Chinese cabbage was superior to that in apple. As color difference and Vc quantity in samples processed by plasma were the same as in control group, it was concluded that omethoate residue by using plasma had no passive effect on the characters of fruits and vegetables.
Number of references:16
Main heading:Plasmas
Controlled terms:Degradation - Fruits - Pesticide effects - Vegetables
Uncontrolled terms:Apple - Chinese cabbage - Color difference - In-control - Influence factors - Pesticide residue
Classification code:932.3 Plasma Physics - 821.4 Agricultural Products - 821.2 Agricultural Chemicals - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 454.2 Environmental Impact and Protection - 453.1 Water Pollution Sources
DOI:10.3969/j.issn.1002-6819.2009.12.055
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 57>
Accession number:20100812731106
Title:Reflective spectral characteristics of apple florescence canopy
Authors:Zhu, Xicun (1); Zhao, Gengxing (1); Lei, Tong (1)
Author affiliation:(1) College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China; (2) Key Laboratory of Agricultural Ecology and Environment, Shandong Agricultural University, Tai'an 271018, China
Corresponding author:Zhao, G.
(zhaogx@sdau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:180-186
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The apple florescence is a key stage for apple production and management, and the study of apple canopy reflective spectral is of important theoretical and practical significance. Qixia City, Shandong Province was selected as the study area, and reflective spectral data of 120 apple florescence canopies were obtained. Based on the effects of different sample numbers on reflective spectral, the reflective spectral characteristics of apple florescence canopies with and without flowers, with different amount of flowers, at different florescence stages, and with different ages and species of apple trees were systematically studied by using variance and correlation analysis methods. The results indicated that with the increase of cumulative sample numbers, the reflective spectral curves of apple florescence canopies became stable and smooth. In the wave bands of 431-500, 591-680 and 761-1300 nm, the variance analysis results of canopies with and without flowers were very significant (α=0.01). Results showed that the correlations of canopies with different amount of flowers with reflectances in 391-513, 598-687 and 711-1193 nm wave bands were significant (p&le0.05). Reflectance increased at the 670 nm Red Valley and decreased in the near-infrared band of 761-1300 nm with the increase of flower amount. Reflective spectral characteristics among different apple species of Red Fuji, Jinshuai and New Red Star were hard to be distinguished except that for Gala. These results revealed the tremendous potential of capturing information of apple florescence with hyperspectral measurement, and it provided the references for constructing retrieval models of remote sensing.
Number of references:14
Main heading:Fruits
Controlled terms:Correlation methods - Interferometry - Reflection - Remote sensing - Spectrum analysis - Spectrum analyzers
Uncontrolled terms:Apple florescence - Apple production - Apple trees - Canopy model - Correlation analysis - HyperSpectral - Near-infrared bands - Retrieval models - Sample number - Shandong province - Spectral characteristics - Spectral curves - Spectral data - Study areas - Variance analysis - Wavebands
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.4 Optical Variables Measurements - 941 Acoustical and Optical Measuring Instruments - 922.2 Mathematical Statistics - 921 Mathematics - 821.4 Agricultural Products - 741.1 Light/Optics - 731.1 Control Systems - 711 Electromagnetic Waves
DOI:10.3969/j.issn.1002-6819.2009.12.032
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 58>
Accession number:20100812731118
Title:Effect of vermiculite and chicken manure addition on plug seedling production with corn stalk substrate
Authors:Shao, Xiuli (1); Wang, Jiqing (1); He, Bing (1); Ge, Weiwei (1)
Author affiliation:(1) College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
Corresponding author:Wang, J.
(wjq16@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:250-253
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Corn stalk is a kind of newly substrate that can replace peat. It is important to study the application technique for horticultural crops cultivation and seedling production. The effect of the volumetric ratio of vermiculite to corn stalk substrate, the adding quantity of chicken manure and the relative moisture content on the growth of tomato plug seedling were studied by using orthogonal test design. The results showed that the important order of different factors to the above-ground growth of tomato seedlings was: the quantity of chicken manure > the relative moisture content > the volumetric ratio of vermiculite and chicken manure, while the order to the under-ground growth was: the moisture content > the volumetric ratio of vermiculite and corn stalk substrate > the quantity of chicken manure. The optimal combination was obtained in this experiment, which the relative moisture content was 85% and the volumetric ratio of vermiculite to Corn stalk substrate 1:1, and the quantity of chicken manure 15 g in per plug trays. The results of this experiment provided a useful reference to the utilization of corn stalk substrate and developing new type substrates.
Number of references:15
Main heading:Substrates
Controlled terms:Clay minerals - Experiments - Fertilizers - Fruits - Manures - Meats - Moisture - Moisture determination
Uncontrolled terms:Chicken manure - Corn stalk - Horticultural crops - Moisture contents - Optimal combination - Orthogonal test design - Plug seeding - Plug seedling - Seedling production - Tomato seedlings - Volumetric ratio
Classification code:804 Chemical Products Generally - 813.1 Coating Techniques - 821.2 Agricultural Chemicals - 944.2 Moisture Measurements - 821.4 Agricultural Products - 822.3 Food Products - 901.3 Engineering Research - 821.5 Agricultural Wastes - 801.4 Physical Chemistry - 801 Chemistry - 443.1 Atmospheric Properties - 452.3 Industrial Wastes - 461 Bioengineering and Biology - 482.2 Minerals - 712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits
DOI:10.3969/j.issn.1002-6819.2009.12.044
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 59>
Accession number:20100812731077
Title:Validity examination of simulated results of crop water requirements
Authors:Yu, Chan (1); Chaolunbagen (1); Gao, Ruizhong (1); Zhu, Zhongyuan (1)
Author affiliation:(1) College of Hydraulics and Civil Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China; (2) General Hydrology Bureau of Inner Mongolia, Huhhot 010010, China
Corresponding author:Chaolunbagen
(Chaolunbagen@cast.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:13-21
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Crop water requirement is very important parameter for making high efficient irrigation schedule, irrigation and drainage planning and scientific allocation of water resources. At present, the main approaches used for simulating crop water requirements include FAO-56 dual crop coefficient method, two source model of conservation of energy, water balance model of root zone and SWAP model. Each approach had its own advantages, disadvantages and applying conditions. No matter which approach is used for simulating crop water requirement, the validity of modeling results should be examined. Otherwise, the simulated crop water requirement could not be used for the engineering projects mentioned above. In the paper, based on irrigation experiments data, the crop water requirements of planted Elymus and Agropyron were simulated by the dual crop coefficient approach. Fitting correlation diagram method, regression analysis and indicating residual estimation errors were also used to examine the validity of simulated results. The first approach was a qualitative test method, and gave statistical correlation trend. Second and third approaches were quantitative test methods, and indicated the goodness of fitting and the ranges of the residual estimation errors. By integrating qualitative approach with the quantitative ones, the consistency between the simulated values and the observed values of crop water requirements was effectively examined, which the simulated results can be applied in the engineering projects.
Number of references:14
Main heading:Water resources
Controlled terms:Crops - Errors - Irrigation - Regression analysis
Uncontrolled terms:Conservation of energy - Correlation diagrams - Crop coefficient - Crop water requirements - Dual crop coefficient approach - Engineering project - Estimation errors - Irrigation schedule - Modeling results - Qualitative approach - Qualitative test - Quantitative tests - Root zone - Simulated results - Statistical correlation - SWAP model - Two-source model - Validity examination - Water balance models - Water requirements
Classification code:444 Water Resources - 731 Automatic Control Principles and Applications - 821.3 Agricultural Methods - 821.4 Agricultural Products - 921 Mathematics - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2009.12.003
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 60>
Accession number:20100812731086
Title:Effect of spatial distribution of rainfall erosivity on soil loss at catchment scale
Authors:Cheng, Linlin (1); Zhao, Wenwu (2); Zhang, Yinhui (3); Xu, Haiyan (2)
Author affiliation:(1) College of Geoscience and Surveying Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China; (2) State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China; (3) Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100190, China
Corresponding author:Zhao, W.
(zhaoww@bnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:68-73
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For identifying the effects of spatial distribution of rainfall erosivity on soil loss, Zichang catchment of Chinese loess hilly-gully area was taken as an example, and the concept of regional gravity center was used to analyze the spatial distribution of rainfall erosivity. The effect of the spatial movement of rainfall erosivity gravity center on soil loss in different years was analyzed based on GIS tools. The results indicated that the distance between gravity centers of rainfall erosivity and hydrological station and that between gravity centers of rainfall erosivity and gravity centers of steep slope grade (higher than 15°) had significant influence on soil loss. When gravity center of rainfall erosivity was in the middle place between hydrological station and gravity centers of steep slope grade (higher than 15°), there would also be more soil loss. The changes of gravity centres of rainfall erosivity from north to south had little effect on soil loss. However, the changes from west to east had much effect. For catchment, with the changes of spatial distribution of rainfall erosivity, the fitting relations between rainfall erosivity and slope grade, and land use, and hydrological station would be changed, which would lead to the amount of soil loss increased or decreased.
Number of references:15
Main heading:Soil surveys
Controlled terms:Catchments - Land use - Rain - Runoff - Size distribution - Soils
Uncontrolled terms:Catchment scale - Chinese loess - Gravity centers - Rainfall erosivity - Soil loss - Spatial distribution - Steep slope
Classification code:933.1 Crystalline Solids - 931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 531.2 Metallography - 483.1 Soils and Soil Mechanics - 444.1 Surface Water - 444 Water Resources - 443.3 Precipitation - 442.2 Land Reclamation - 442.1 Flood Control - 423 Non Mechanical Properties and Tests of Building Materials - 406.2 Roads and Streets - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.012
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 61>
Accession number:20100812731125
Title:Land use change in farming-pastoral region of Inner Mongolia based on GIS and Markov model
Authors:Guo, Biyun (1); Zhang, Guangjun (1)
Author affiliation:(1) College of Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) Department of Forestry, Michigan State University, East Lansing 48823, United States
Corresponding author:Guo, B.
(biyunguo@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:291-298
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For studying the influence of human activity on spatial distribution, transformation of land use type and ecological environment in farming-pastoral region, Taipusi Qi in Inner Mongolia was selected to analyze the change of land use, land cover and spatial landscape pattern in the past 30 years by remote sensing (RS) and geographic information system (GIS). The Markov model was applied to predict land use variation in the following 20 years. The results showed that grassland and farmland were the main land use types of research area with obvious reciprocal transformation. Grassland was mainly transferred to farmland in 1975-1990. Farmland was chiefly converted to grassland, and grassland tended to increase in 1990-2004. The landscape diversity in the study area rose with the contagion index decreasing and fragmentation degree being intensified during 1975-2000. The advantageous patches maintained good connectivity with the increasing patch cohesion index and the decreasing landscape fragmentation during 2000-2004. The change of human interference intensity played an important role on the variation of land use structure. Land use intensity was mainly affected by the changes in population as well as national land use policies. In the following 20 years, the agriculture land area would tend to decrease, the grassland and unused land area would have a slight reduction by contrasting the increasing the forest land area notably. It is a basic approach to ecological restoration by implementing rational land use policies and utilizing ecosystem self-repair functions.
Number of references:31
Main heading:Information use
Controlled terms:Ecosystems - Farms - Forestry - Geographic information systems - Information systems - Land use - Markov processes - Rational functions - Remote sensing - Restoration
Uncontrolled terms:Contagion index - Ecological environments - Ecological restoration - Forest land - Fragmentation degree - Human activities - Human interference - Inner Mongolia - Land areas - Land cover - Land use policy - Land use type - Land-use change - Landscape diversity - Landscape fragmentation - Landscape pattern - Markov - Markov model - Research areas - Self-repair function - Spatial distribution - Study areas
Classification code:922.1 Probability Theory - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.0 Woodlands and Forestry - 903.2 Information Dissemination - 903.3 Information Retrieval and Use - 913.5 Maintenance - 921 Mathematics - 731.1 Control Systems - 454.3 Ecology and Ecosystems - 442.2 Land Reclamation - 409 Civil Engineering, General - 403 Urban and Regional Planning and Development - 402 Buildings and Towers - 723.3 Database Systems
DOI:10.3969/j.issn.1002-6819.2009.12.051
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 62>
Accession number:20100812731120
Title:Evaluation on performance and thermal environment of hoop structure for finishing pigs
Authors:Kang, Guohu (1); Dong, Hongmin (1); Tao, Xiuping (1); Zhu, Zhiping (1)
Author affiliation:(1) Institute of Environment and Sustainable Development in Agriculture, Animal Environmental Facility Surveillance, Inspection and Testing Center (Beijing), Ministry of Agriculture, Beijing 100081, China
Corresponding author:Dong, H.
(Donghm@mail.caas.net.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:259-264
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A hoop structure swine production system was designed aiming to reduce wastewater from pig production. A 100-head hoop structure for finishing pigs was built in Beijing, and the environment status and pig performance in the hoop structure were studied and compared with that of control in typical brick-concrete concentrated swine house. Results showed that the average inner air temperature in hoop structure and control house was 26.6°C, 27°C, and relative humidity was 77%, 71%, respectively, in summer; Average inner air temperature was 18.9°C, 21°C, and relative humidity was 50%, 49%, respectively, in spring; Pig's daily average gain and feed grain ratio were no significantly different between the hoop structure and control house, but water-saving effect was very significant in the hoop structure, with water consumption in hoop decreased by 13.2 L/d each pig in summer and 1.4 L/d each pig in spring compared with control house, which reduced 16.5 L/d and 4.7 L/d waste water in summer and spring, respectively.
Number of references:15
Main heading:Humidity control
Controlled terms:Atmospheric humidity - Atmospheric temperature - Houses - Moisture - Sewage - Wastewater - Water conservation - Water supply
Uncontrolled terms:Air temperature - Environment impact - Pig house - Pig production - Relative humidities - Swine production - Thermal environment - Water consumption - Water saving
Classification code:801.4 Physical Chemistry - 643.3 Air Conditioning - 453.1 Water Pollution Sources - 452.3 Industrial Wastes - 452.1 Sewage - 446.1 Water Supply Systems - 444 Water Resources - 443.1 Atmospheric Properties - 403.1 Urban Planning and Development - 402.3 Residences - 402 Buildings and Towers
DOI:10.3969/j.issn.1002-6819.2009.12.046
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
Title:Quality improvement of industrial aquaculture recycled water by sand filters
Authors:Zhou, Yang (1); Chen, Youguang (1); Duan, Dengxuan (1); Wang, Mei (2)
Author affiliation:(1) Fresh Water Fisheries Research Institute of Shandong Province, Jinan 250117, China; (2) College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 200090, China
Corresponding author:Chen, Y.
(chenyouguang2000@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:254-258
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Two groups of three parallel ordinary sand filter tanks were used in the experiment. According to the physical and geometric principles, quartz sand with particle size of 3 mm was selected as the middle-level, while 2 mm and 5 mm as the upper and lower level, respectively. The particle densities of the upper and lower levels were less than that of the middle one. An experiment of water treatment on factory recycled water by sand filter and its backflushing renewable effect was carried out. The results showed that suspended solids removal efficiency was extremely significant (P&le0.01), which removal rate reached 99.83%, and sand filter tank after backflushed was renewable to be used.
Number of references:18
Main heading:Industrial water treatment
Controlled terms:Agriculture - Fish ponds - Oxide minerals - Quartz - Removal - Sand - Tanks (containers) - Water recycling
Uncontrolled terms:Culturing recycled-water - Industrial aquaculture - Quartz sand - Sand filter - Sand filter tank
Classification code:821.3 Agricultural Methods - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 804.2 Inorganic Compounds - 802.3 Chemical Operations - 619.2 Tanks - 505 Mines and Mining, Nonmetallic - 483.1 Soils and Soil Mechanics - 482.2 Minerals - 471.5 Sea as Source of Minerals and Food - 453.2 Water Pollution Control - 445.1.2 Water Treatment Techniques for Industrial Use - 445.1 Water Treatment Techniques - 444 Water Resources
DOI:10.3969/j.issn.1002-6819.2009.12.045
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 2>
Accession number:20100812731134
Title:Fresh-keeping effects of Pyrus communis L. treated by 1-MCP at ambient temperature
Authors:Li, Mei (1); Wang, Guixi (1); Liang, Lisong (1); Zhu, Meiyun (2); Li, Zhenru (3); Qi, Liping (3)
Author affiliation:(1) Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; (2) College of Food Science and Technology, Henan Agricultural University, Zhengzhou 450002, China; (3) Forestry Bureau of Daxing District, Beijing 102607, China
Corresponding author:Wang, G.
(wanggx0114@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:345-350
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The postharvest physiology and storage characteristic of Pyrus communis L. cv. Comice treated by 1.0 μL/L 1-MCP for 16 hours and then stored at 20°C were studied. The results showed that 1-MCP treatment could defer the change of fruit mature and colour, reduce the production of ethylene and respiration and postpone the peak value. The ethylene production and respiration of Pyrus communis L. treated with 1-MCP were 69.6% and 79.8% of the contrast respectively, the peak of ethylene and respiration were delayed for six days. 1-MCP treatment retarded the increase of soluble solids and malondialdehyde content. The activity of peroxidase, superoxide dismutase and catalase were increased 144.7%, 113.5% and 141.4% of the contrast, respectively. Moreover, 1-MCP treatment could reduce rotting rate, maintained the quality of pyrus communis L.
Number of references:17
Main heading:Quality control
Controlled terms:Aldehydes - Customer satisfaction - Ethylene - Image storage tubes - Oxygen - Physiology - Plants (botany) - Total quality management
Uncontrolled terms:Ambient temperatures - Ethylene production - Malondialdehyde - Peak values - Postharvest - Pyrus communis - Pyrus communis L. - Soluble solids - Storage characteristic - Super oxide dismutase
Classification code:913.3 Quality Assurance and Control - 912.2 Management - 912 Industrial Engineering and Management - 922.2 Mathematical Statistics - 804.1 Organic Compounds - 714.1 Electron Tubes - 461.9 Biology - 804 Chemical Products Generally
DOI:10.3969/j.issn.1002-6819.2009.12.060
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 3>
Accession number:20100812731117
Title:Out of plane stability of greenhouse side columns with eccentrically lateral braces
Authors:Qi, Fei (1); Tong, Genshu (2)
Author affiliation:(1) Chinese Academy of Agricultural Engineering, Beijing 100125, China; (2) College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
Corresponding author:Tong, G.
(tonggs@ccea.zju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:245-249
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Rectangular box section is widely used as columns in agricultural Greenhouse. Smaller tubes are attached on the outside of the most dangerous side columns to serve as wall purlin. These horizontal smaller tubes provide lateral braces to side columns in practice, but this effect is lacking of theoretical supporting. The paper carried out an analysis of the efficiency of the tube in providing the lateral support. Analysis revealed that, though the smaller tubes are eccentric to the centroid of the column, the lateral braces to the column could still be effective. The out of plane effective length could be decreased accordingly. According to this conclusion, the out of plane effective length could take the distance between the lateral braces when checking the stability of the column. In this way, the checking calculation of the side column could be more scientific and reasonable on the bases of less material application and proper strength and stability of the side column.
Number of references:18
Main heading:Stability
Controlled terms:Greenhouses - Petroleum pipelines - Steel pipe - Tubes (components)
Uncontrolled terms:Agricultural greenhouse - Column stability - Effective length - Lateral braces - Material application - Out of plane stability - Out-of plane - Rectangular box - Side column
Classification code:951 Materials Science - 931 Classical Physics; Quantum Theory; Relativity - 821.6 Farm Buildings and Other Structures - 801 Chemistry - 731.4 System Stability - 961 Systems Science - 619.1 Pipe, Piping and Pipelines - 545.3 Steel - 511.2 Oil Field Equipment - 511.1 Oil Field Production Operations - 402.1 Industrial and Agricultural Buildings - 616.1 Heat Exchange Equipment and Components
DOI:10.3969/j.issn.1002-6819.2009.12.043
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 4>
Accession number:20100812731112
Title:Bio-liquid fuel sustainable assessment system in China
Authors:Meng, Haibo (1); Zhao, Lixin (1); Gao, Xinxing (1); Tian, Yishui (1); De Miglio, Rocco (2); Lavagno, Evasio (2)
Author affiliation:(1) Chinese Academy of Agricultural Engineering, Beijing 100125, China; (2) Dipartimento Di Energetica, Politecnico Di Torino, Italy
Corresponding author:Zhao, L.
(zhaolixin5092@gmail.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:218-223
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The research status of energy balance for bio-liquid fuel in China and the rest of the world have been analysed in this paper. Based on energy balance, emissions of pollutants, land and water resources etc, a bio-liquid fuel sustainable assessment system (BSAS) has been developed by LCA (life cycle assessment), which includes three sections as foundation database, analysis module, optimization module. Two case study have been conducted by the system, which sweetsorghum stalks have been used to produce ethanol in Inner Mongolia and Heilongjiang Province, respectively. The results showed that the system could be used to analysis and assess the sustainability to develop bio-liquid fuels at state, province and specific district levels in China, and bio-liquid fuels planing in the specific area could also be obtained under the certain scenario, which supplys technology support for decision-makers.
Number of references:18
Main heading:Liquids
Controlled terms:Energy balance - Ethanol - Life cycle - Liquid fuels - Strategic planning - Sustainable development - Water analysis - Water resources
Uncontrolled terms:Assessment system - Decision makers - Inner Mongolia - Life-cycle assessments - Optimization module - Specific areas - Sustainable assessment - Technology support
Classification code:931 Classical Physics; Quantum Theory; Relativity - 913.1 Production Engineering - 912.2 Management - 911.2 Industrial Economics - 901.4 Impact of Technology on Society - 931.2 Physical Properties of Gases, Liquids and Solids - 804.1 Organic Compounds - 523 Liquid Fuels - 513.3 Petroleum Products - 445.2 Water Analysis - 444 Water Resources - 801 Chemistry
DOI:10.3969/j.issn.1002-6819.2009.12.038
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 5>
Accession number:20100812731111
Title:Estimation of straw resources in China
Authors:Bi, Yuyun (1); Gao, Chunyu (1); Wang, Yajing (1); Li, Baoyu (2)
Author affiliation:(1) Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (2) School of Economy and Management, Beijing Forestry University, Beijing 100083, China
Corresponding author:Bi, Y.
(biyuyun@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:211-217
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:There are some problems such as statistics lacking, unsuitability of the ratio of main product output to that of by-product of the crops in the estimation of straw resources. The paper chooses the revised ratio of main product output to that of by-product of crops and estimates the quantity of straw resource comprehensively and systematically. The estimation results show that the total straw yield in China has a generally increasing trend with the improvement of agricultural comprehensive production capacity, and China is the biggest country in straw resources that its total output of straw resources in 2005 reached 841831200 t, which the straw of food crops was the main source. It has a great potential for rice husk, corncob, bagasse to develop new energy.
Number of references:17
Main heading:Crops
Controlled terms:Estimation
Uncontrolled terms:China - Estimation results - Food crops - Production capacity - Quantity - Rice husk
Classification code:821.4 Agricultural Products - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2009.12.037
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 6>
Accession number:20100812731100
Title:Traceability system of grain quality safety based on radio frequency identification middleware
Authors:Liu, Peng (1); Tu, Kang (1); Hou, Yuepeng (1)
Author affiliation:(1) College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author:Tu, K.
(kangtu@njau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:145-150
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For constructing traceability system of grain quality safety with fast, comprehensive and precise characteristics, the operation flow and the application mode on grain quality traceability had been analyzed. The analysis of the system flow was carried out based on the RFID (radio frequency identification) middleware in the grain supply chain considering the grain circulation practice in Jiangsu Province. In the mean while, configuration of the hardware and software was studied. Based on the research results, the system architecture of grain quality traceability with RFID middleware technology was proposed by structured design method. Then, the system integration and test had been taken with VC++ language and AutoRunner testing tool. Practical dynamic tests with single tag achieved the system identify accuracy, identify working cycle (the cycle from reading the label to releasing information to the Internet) and MTBF (mean time between failure) with 95.3%, 8.6 s and 1000 h, respectively. The system has the potential application for tracing grain quality and safety.
Number of references:14
Main heading:Quality control
Controlled terms:Customer satisfaction - Middleware - Radio frequency identification (RFID) - Radio waves - Security of data - Statistical tests - Supply chains - Total quality management
Uncontrolled terms:Dynamic tests - Grain - Grain quality - Hardware and software - Jiangsu province - Mean time between failures - Operation flow - Potential applications - Research results - RFID Middleware - Structured design method - System architectures - System flow - System identify - System integration - Testing tools - Traceability systems - VC++ language - Working cycle
Classification code:922.2 Mathematical Statistics - 913.3 Quality Assurance and Control - 913 Production Planning and Control; Manufacturing - 912.2 Management - 912 Industrial Engineering and Management - 911.3 Inventory Control - 731.1 Control Systems - 723.2 Data Processing and Image Processing - 723.1 Computer Programming - 716.3 Radio Systems and Equipment - 711 Electromagnetic Waves
DOI:10.3969/j.issn.1002-6819.2009.12.026
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 7>
Accession number:20100812731090
Title:Development and experiments on tangential flow threshing and separating device of axial flow combine
Authors:Li, Yaoming (1); Jia, Biqing (1); Xu, Lizhang (1); Qiao, Mingguang (1); Zhao, Zhan (1)
Author affiliation:(1) Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Jia, B.
(jia-biqing@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:93-96
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For analyzing the threshing and separating performance of tangential flow threshing and separating unit of axial flow combine, the threshing, separating and cleaning test-bed of axial flow was developed. Spike tooth and knife tooth were applied to the tangential flow threshing and separating unit. The power consumption of tangential flow threshing cylinder, force-feeding drum and axial flow cylinder were experimentally measured. The effects of structure and motion parameters of tangential flow threshing and separating unit on threshing performance were studied. The experimental results showed that threshing rate of tangential flow threshing and separating unit was in the range of about 67.19%-82.37%, and its power consumption accounted for about 20% of total threshing power consumption, the power consumption of tangential flow unit using knife tooth was lower than that using spike tooth, the threshing rate of tangential-axial flow threshing and separating test-bed was higher than 99.90%, the entrainment loss ratio was less than 0.25% for wheat harvest. The power consumption of tangential-axial flow threshing and separating unit using tangential flow threshing cylinder of knife tooth was lower than that using tangential flow threshing cylinder of spike tooth. The force-feeding drum and axial flow threshing cylinder accounted for about 14% and 66% of total threshing power consumption, respectively. The results provide guidance for the development of axial flow combine.
Number of references:16
Main heading:Combines
Controlled terms:Agriculture - Axial flow - Cylinders (shapes) - Dentistry - Feeding - Steady flow - Test facilities
Uncontrolled terms:Cleaning tests - Loss ratio - Motion parameters - Power Consumption - Tangential flow - Threshing and separating unit - Wheat harvest
Classification code:821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 691.2 Materials Handling Methods - 631.1 Fluid Flow, General - 462.3 Dental Equipment and Supplies - 461.6 Medicine and Pharmacology - 461.1 Biomedical Engineering - 423.1 Test Equipment - 422.1 Test Equipment - 408.2 Structural Members and Shapes - 402.1 Industrial and Agricultural Buildings
DOI:10.3969/j.issn.1002-6819.2009.12.016
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 8>
Accession number:20100812731093
Title:Crop rows detection based on parallel characteristic of crop rows using visual navigation
Authors:Chen, Jiao (1); Jiang, Guoquan (2); Du, Shangfeng (1); Ke, Xing (1)
Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (2) School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454000, China
Corresponding author:Du, S.
(du_grad_stud@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:107-113
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To detect and localize the crop rows quickly and effectively for navigation of agricultural machines, a new algorithm for crop rows detection is proposed in this paper. A navigation software was developed in VC++ 6.0. Crop rows were separated from soil background by image pre-processing, and the localization points were got by vertical projection. The world coordinates of each localization point were computed according to the principle of perspective transformation and the camera calibration results. With the parallel characteristic of crop rows, an improved algorithm based on Hough Transform was employed for the detection and localization of crop rows. The experiment with images of crop rows and the simulation experiment in laboratory showed that the new algorithm took 219.4 ms to process a 320×240 pixels color image, and the average errors of navigation distance and navigation angle were 2.33 mm and 0.3°. The experimental results confirmed that the algorithm was accurate, effective and fast enough to detect and localize crop rows for real-time navigation.
Number of references:15
Main heading:Crops
Controlled terms:Agricultural machinery - Algorithms - Calibration - Cameras - Computer vision - Experiments - Hough transforms - Imaging systems - Navigation
Uncontrolled terms:Agricultural machine - Average errors - Camera calibration - Color images - Crop rows - Crop rows detection - Detection and localization - Image preprocessing - Improved algorithm - Machine vision - Navigation software - Perspective transformation - Real-time navigation - Simulation experiments - VC++ 6.0 - Vertical projection - Visual Navigation - World coordinates
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 746 Imaging Techniques - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products - 901.3 Engineering Research - 902.2 Codes and Standards - 921 Mathematics - 921.3 Mathematical Transformations - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 742.2 Photographic Equipment - 431.5 Air Navigation and Traffic Control - 434.4 Waterway Navigation - 655.1 Spacecraft, General - 716.3 Radio Systems and Equipment - 741.2 Vision - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 731.6 Robot Applications - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing
DOI:10.3969/j.issn.1002-6819.2009.12.019
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 9>
Accession number:20100812731075
Title:Emergency water transfer scheme on regional combating drought based on hierarchical theory of large system
Authors:Wang, Shuangyin (1); Cao, Hongxia (1); Zhu, Xiaoqun (1)
Author affiliation:(1) College of Water Resources and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Wang, S.
(wshy6986@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:1-5
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to solve water use conflict occurred in different water requirement departments at the irrigation districts in the west of Guanzhong Region under emergent drought situation, the authors set up a regional optimal water allocation model which aimed at largest total water use quantity at the four irrigation districts by using dynamic programming based on hierarchical theory of large system. Three types of first class choice schemes (the third one is made up of 27 second class choice) for water distribution were made according to different frequencies combination between water needs and inflow. Based on the analysis results of various options scheduling, and considering the actual operation interoperability, water transfer quantity in summer irrigation was taken as main control factor. Through classification and combination, the third scheme was recommended, which includes 11 types of water transfer schemes for four irrigation districts. Satisfied results were obtained by applying the scheme during 2005-2007. This scheme provides scientific basis for emergency water transfer on drought combating.
Number of references:17
Main heading:Water analysis
Controlled terms:Biochemical oxygen demand - Drought - Dynamic programming - Hierarchical systems - Irrigation - Water management - Water supply
Uncontrolled terms:Actual operation - Analysis results - Different frequency - Hierarchical theory of large system - Irrigation districts - Large system - Main control factor - Water allocation models - Water distributions - Water needs - Water requirements - Water transfers - Water use - Water use conflicts
Classification code:961 Systems Science - 921.5 Optimization Techniques - 821.3 Agricultural Methods - 801 Chemistry - 731.1 Control Systems - 453 Water Pollution - 452.4 Industrial Wastes Treatment and Disposal - 452.2 Sewage Treatment - 446.1 Water Supply Systems - 446 Waterworks - 445.2 Water Analysis - 444 Water Resources - 443.3 Precipitation
DOI:10.3969/j.issn.1002-6819.2009.12.001
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 10>
Accession number:20100812731104
Title:Accuracy assessment of four global land cover datasets in China
Authors:Wu, Wenbin (1); Yang, Peng (1); Zhang, Li (1); Tang, Huajun (1); Zhou, Qingbo (1); Ryosuke, Shibasaki (3)
Author affiliation:(1) Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (2) Key Laboratory of Resources Remote Sensing and Digital Agriculture, Ministry of Agriculture, Beijing 100081, China; (3) Center for Spatial Information Science, University of Tokyo, Tokyo 153-8505, Japan
Corresponding author:Zhang, L.
(zhangli@caas.net.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:167-173
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:This study aims to examine the suitability of four global land cover datasets (UMD, IGBP-DISCover, MODIS and GLC2000) for their accuracies in mapping and monitoring cropland across China. For that, four global land cover products were firstly compared with the national land cover dataset 2000 (NLCD-2000) at provincial, regional and national scales to evaluate the accuracies of estimation of aggregated cropland area in China. This was followed by a spatial comparison to assess their accuracies in estimating the spatial distribution of cropland across China. The results showed that there were varying levels of apparent discrepancies in estimating China's cropland among these four global datasets, and that both aggregated areas and spatial agreement between them varied from region to region. MODIS and GLC2000 datasets had a relatively higher accuracy in depicting China's cropland than UMD and IGBP-DISCover datasets. The coarse spatial resolution and per pixel classification approach, as well as landscape heterogeneity, are the main reasons for large discrepancies between these four global land cover datasets and NLCD-2000 dataset.
Number of references:28
Main heading:Classification (of information)
Controlled terms:Data transfer - Database systems - Estimation - Image processing - Imaging systems - Landforms - Radiometers - Size distribution - Spectrometers
Uncontrolled terms:Accuracy assessment - Cropland - Data sets - Land cover - Land cover datasets
Classification code:903.1 Information Sources and Analysis - 921 Mathematics - 922.2 Mathematical Statistics - 801 Chemistry - 931.2 Physical Properties of Gases, Liquids and Solids - 941.3 Optical Instruments - 944.7 Radiation Measuring Instruments - 933.1 Crystalline Solids - 746 Imaging Techniques - 481.1 Geology - 531.2 Metallography - 716.1 Information Theory and Signal Processing - 423 Non Mechanical Properties and Tests of Building Materials - 723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices - 741.3 Optical Devices and Systems - 723.3 Database Systems
DOI:10.3969/j.issn.1002-6819.2009.12.030
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 11>
Accession number:20100812731076
Title:Spatial distribution characteristics of irrigation water requirement for main crops in China
Authors:Liu, Yu (1); Wang, Lin (1); Ni, Guangheng (2); Cong, Zhentao (2)
Author affiliation:(1) China Institute of Water Resources and Hydropower Research, Beijing 100044, China; (2) Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China
Corresponding author:Liu, Y.
(liuyu@iwhr.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:6-12
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Temporal and spatial distribution characteristics of crop water requirement and irrigation requirement are the bases for determining the irrigation quota in different areas. Based on the daily meteorological data over the past 30 years from more than 200 stations in China and the statistical data of crop growth stages from different areas, crop water requirement (ETc) and net irrigation requirement (IR) of 30 kinds of crops were estimated by using FAO Penman-Monteith equation and crop coefficient method. The results were validated with the observed data form different irrigation stations in different areas. Isolines of the average ETc and IR of main crops were obtained by GIS and IDW interpolation methods. The spatial distribution characteristics of ETc and IR for wheat, maize, cotton and rice were analyzed, which were the most widely planted crops in China. The irrigation requirement indexes of main crops in different areas were obtained by IR/ETc. Results revealed that mean irrigation requirement index in Northeast China, middle and lower reaches of the Yangtze River and South China were generally less than 0.5, and the crop irrigation water requirement in these areas was not high. In North China Plain, Inner Mongolia, Ningxia, Shanxi, Shaanxi and Gansu, 30%-50% of the crop water requirements depended on irrigation for dryland crops, 55%-80% of water consumption came from irrigation for rice. In Xinjiang Uygur Autonomous Region, the irrigation requirement indexes of main crops were over 0.7, and the development of agriculture relied entirely on irrigation.
Number of references:15
Main heading:Irrigation
Controlled terms:Crops - Evapotranspiration - Size distribution - Water supply
Uncontrolled terms:Crop water requirement - Crop water requirements - Irrigation water requirements - Net irrigation water requirement - Reference evapotranspiration - Spatial distribution
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 821.4 Agricultural Products - 821.3 Agricultural Methods - 933.1 Crystalline Solids - 802.3 Chemical Operations - 446.1 Water Supply Systems - 444.1 Surface Water - 423 Non Mechanical Properties and Tests of Building Materials - 531.2 Metallography
DOI:10.3969/j.issn.1002-6819.2009.12.002
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 12>
Accession number:20100812731132
Title:Preliminary study on green tea juice extracted by ultrahigh pressure processing
Authors:Chen, Xiaoqiang (1); Zhang, Yinjun (2); Li, Xuepeng (3); Ye, Yang (1); Cheng, Hao (1); Wang, Xinchao (1)
Author affiliation:(1) Key Laboratory of Machining and Quality Control of Tea and Beverage Plants, National Tea Industry Engineering Research Center, China Academy of Agricultural Sciences, Hangzhou 310008, China; (2) College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (3) College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310035, China
Corresponding author:Chen, X.
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:335-338
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To study the feasibility of ultrahigh pressure process (UHPP) applied on green tea juice manufacturing, green tea juice was extracted from green tea (the ratio of green tea to water was 1:15 and 1:50, respectively) by three methods, which were cold water extraction, hot water extraction and ultrahigh pressure processing with 100, 300 and 500 MPa, respectively. The results of analyzing the chemical composition showed that the contents of free amino acids in green tea juice extracted by UHPP in the same ratio of green tea to solvent were higher than those by cold water extraction and hot water extraction, but the contents of water-soluble saccharide were lower than those by cold water extraction and hot water extraction. The yield of tea polyphenols by ultrahigh pressure was higher than that by cold extraction. The analysis of chromatic aberration showed that the degree of yellow-green of the juice extracted by ultrahigh pressure was deeper than that by cold water extraction and hot water extraction. The ultrahigh pressure had a passive effect on activities of polyphenol oxidase and peroxidase.
Number of references:15
Main heading:Solvent extraction
Controlled terms:Aberrations - Amino acids - Customer satisfaction - Organic acids - Phenols - Pressure effects - Quality control - Total quality management - Water - Water analysis
Uncontrolled terms:Analysis of chromatic aberration - Chromatic aberration - Green tea - Green tea juice - Ultrahigh pressure
Classification code:912 Industrial Engineering and Management - 912.2 Management - 913.3 Quality Assurance and Control - 922.2 Mathematical Statistics - 931.1 Mechanics - 941.3 Optical Instruments - 941.4 Optical Variables Measurements - 804.2 Inorganic Compounds - 444 Water Resources - 445.2 Water Analysis - 461 Bioengineering and Biology - 741 Light, Optics and Optical Devices - 801 Chemistry - 802.3 Chemical Operations - 804.1 Organic Compounds
DOI:10.3969/j.issn.1002-6819.2009.12.058
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 13>
Accession number:20100812731081
Title:Experiments on irrigation efficiency using iodine-starch staining
Authors:Wang, Kang (1); Zhang, Renduo (2); Zhou, Zuhao (3)
Author affiliation:(1) State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; (2) School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China; (3) Department of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
Corresponding author:Wang, K.
(wwangkang@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:38-44
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The objectives of this study were to investigate infiltration patterns and irrigation efficiency under various soil texture and hydraulic conditions and to explore relationships between distributions of solute and flow modes under different irrigation conditions. An iodine-starch staining method was applied to visualize flow paths and solute transport, then totally 12 infiltration experiments under flood irrigation and micro-irrigation were conducted in the loam field and clay field respectively. Irrigation efficiency was evaluated using various indictors, including the application efficiency, deep percolation ratio, storage efficiency, and irrigation uniformity. Results showed that the redistribution of infiltration water was mainly attributed to the wetting patterns. Storage efficiency and irrigation uniformity increased with the increasing of irrigation amount, and the deep percolation ratio also increased significantly. Uniformity and deep percolation loss rate of solute distributions were less than that of the water distributions respectively. Redistributions of water and solute after infiltration provided more direct and comprehensive assessment for irrigation efficiency.
Number of references:23
Main heading:Irrigation
Controlled terms:Experiments - Industrial chemicals - Iodine - Seepage - Soil mechanics - Solute transport - Solvents - Starch - Water supply
Uncontrolled terms:Comprehensive assessment - Deep percolation - Flood irrigation - Flow modes - Flow path - Hydraulic conditions - Irrigation efficiency - Irrigation uniformity - Microirrigation - Redistribution of the infiltration water - Soil textures - Solute distribution - Staining method - Storage efficiency - Water distributions
Classification code:804.1 Organic Compounds - 813.2 Coating Materials - 815.1.1 Organic Polymers - 821.3 Agricultural Methods - 822.3 Food Products - 901.3 Engineering Research - 931 Classical Physics; Quantum Theory; Relativity - 804 Chemical Products Generally - 407 Maritime and Port Structures; Rivers and Other Waterways - 441 Dams and Reservoirs; Hydro Development - 444.2 Groundwater - 446.1 Water Supply Systems - 461.3 Biomechanics, Bionics and Biomimetics - 483.1 Soils and Soil Mechanics - 803 Chemical Agents and Basic Industrial Chemicals
DOI:10.3969/j.issn.1002-6819.2009.12.007
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 14>
Accession number:20100812731109
Title:Evaluation system of wheat natural potential productivity at county scale based on GIS
Authors:Zhang, Hao (1); Xi, Lei (1); Xu, Xin (1); Gao, Rui (1); Ma, Xinming (1); Yin, Jun (3)
Author affiliation:(1) College of Information and Management Science, Henan Agricultural University, Zhengzhou 450002, China; (2) College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China; (3) National Engineering Research Center of Wheat, Zhengzhou 450002, China
Corresponding author:Ma, X.
(xinmingma@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:198-205
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To provide technical support and ADM (aid in decision making) for wheat production management and potentiality mining, attribute data (meteorological data, soil data, wheat data) and spatial data were sorted out at eight counties of Henan Province based on the evaluation process about crop natural potential productivity, and space-attribute database was created. The evaluation system of GIS-based wheat natural potential productivity was designed and developed by using UML 2.0, SQL Server 2000 and SuperMap GIS 2008 components, which realized loose coupling between the potential productivity evaluation model interfaces and GIS. The system calculated quantificationally wheat natural potential productivity at county scale by using mechanism models of light, temperature, water, soil based on 'experience-statistics', and made the spatial distribution thematic maps of wheat natural potential productivity through classification statistics and grading cartography. The results showed that photosynthesis potential productivity reduced along with latitude increasing, the order of temperature potential productivity was west>south>southeast>north>center, the order of moisture potential productivity was south>southeast>west>center>north, and the order of soil potential productivity was south>center>north>southeast>west of Henan Province. The key factors affecting wheat natural potential productivity were soil, followed by temperature and moisture, and the factors affecting wheat relative production mining magnitude were moisture, followed by temperature and soil. The system has characteristics about wide applicability and good independence, which provides technical support and ADM for wheat production management and potential mining.
Number of references:22
Main heading:Productivity
Controlled terms:Crops - Geographic information systems - Geologic models - Industrial management - Information systems - Mapping - Maps - Moisture - Radiometers - Soils
Uncontrolled terms:Attribute data - Attribute database - County scale - Evaluation process - Evaluation system - Henan Province - Key factors - Loose couplings - Mechanism model - Meteorological data - Natural potential - Natural potential productivity - Potential productivity - Soil data - Soil potential - Spatial data - Spatial distribution - SQL server 2000 - Technical support - Thematic maps - UML 2.0 - Wheat production
Classification code:944.7 Radiation Measuring Instruments - 913.1 Production Engineering - 912.2 Management - 903.3 Information Retrieval and Use - 903.2 Information Dissemination - 902.1 Engineering Graphics - 821.4 Agricultural Products - 801.4 Physical Chemistry - 723.3 Database Systems - 483.1 Soils and Soil Mechanics - 481.1 Geology - 443.1 Atmospheric Properties - 405.3 Surveying
DOI:10.3969/j.issn.1002-6819.2009.12.035
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 15>
Accession number:20100812731078
Title:Effect of regulation and storage engineering on groundwater salinity in reclaimed water irrigation district
Authors:Wu, Wenyong (1); Liu, Honglu (1); Chen, Honghan (2); Hao, Zhongyong (1); Shi, Yanwu (1); Ma, Fusheng (1)
Author affiliation:(1) Beijing Hydraulic Research Institute, Beijing 100044, China; (2) School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China
Corresponding author:Liu, H.
(liuhonglu@yeah.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:22-25
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The research of irrigation regulation and storage engineering on groundwater salinity was investigated in reclaimed water irrigation district (RWID) of Beijing for site selection. Five research wells with different depths around regulation and storage engineering were drilled to monitor water quality changes. Chloride ion of leachate, total nitrogen, total phosphors, hardness of water samples increased, and removal rate of total nitrogen, total phosphorus of water samples decreased by 97.3% and 99.0%, respectively in 12-meter vadose zone after infiltration, and the measured parameters were close to groundwater background values. Measured results indicated that groundwater was not polluted by reclaimed water infiltration, and there was no significant difference between the effect of reclaimed water and other water resources infiltration on groundwater. The vadose comprising of loam, sand and clay can prevent groundwater pollution for site selection of regulation and storage engineering in RWID.
Number of references:17
Main heading:Groundwater pollution
Controlled terms:Chlorine compounds - Engineering - Groundwater - Groundwater resources - Hydrogeology - Irrigation - Leaching - Nitrogen removal - Phosphorus - Salinity measurement - Salts - Seepage - Site selection - Soil mechanics - Wastewater reclamation - Water quality
Uncontrolled terms:Background value - Chloride ions - Groundwater irrigation - Hardness of water - Irrigation districts - Leachates - Measured parameters - Measured results - Re-claimed water - Removal rate - Total nitrogen - Total phosphorus - Vadose Zone - Water samples
Classification code:481.1 Geology - 483.1 Soils and Soil Mechanics - 513.1 Petroleum Refining, General - 533.1 Ore Treatment - 802.2 Chemical Reactions - 943.3 Special Purpose Instruments - 802.3 Chemical Operations - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 821.3 Agricultural Methods - 901 Engineering Profession - 804 Chemical Products Generally - 471.4 Seawater, Tides and Waves - 454.2 Environmental Impact and Protection - 402 Buildings and Towers - 403 Urban and Regional Planning and Development - 407 Maritime and Port Structures; Rivers and Other Waterways - 441 Dams and Reservoirs; Hydro Development - 444 Water Resources - 444.2 Groundwater - 445.2 Water Analysis - 452.4 Industrial Wastes Treatment and Disposal - 453.1 Water Pollution Sources - 453.2 Water Pollution Control
DOI:10.3969/j.issn.1002-6819.2009.12.004
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 16>
Accession number:20100812731099
Title:Development of portable bio-impedance spectroscopy system for measuring porcine meat quality
Authors:Ding, Qiang (1); Wang, Zhongyi (1); Huang, Lan (1); He, Jianxin (1); Zhang, Genwei (1); Gao, Jian (1); Wan, Qing (2)
Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (2) College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Huang, L.
(biomed_hl@263.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:138-144
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Based on the principle of bio-impedance spectroscopy, a non-destructive portable bio-impedance prototype system for measuring meat quality was developed. The system consisted of a signal generator unit and a detection unit. The former unit could output sinusoidal signal with automatic frequencies scanning, which is range from 0.1 kHz to 250 kHz. The detection unit included detection electrodes and a gain and phase detector. In this work, the performance of six-needle steel electrodes and four-needle graphite electrodes in detecting bio-impedance was compared. Also, coefficients of variability (CVs) were applied to assess the stability of the system. Experiment showed that the coefficient of variation (CV) of the system was less than 6% if the frequency was above 1 kHz. Intra class correlation (ICC) procedures were applied to assess the reliability of the system due to temperature variability. Values of Ri, Re, C in the system model were reliable with intra class correlations of more than 65%. Furthermore, pork samples were selected to investigate relation between bio-impedance spectroscopy and meat quality attributes, i.e. meat freshness. Results showed that bio-impendence value, real part value of bio-impendence, imaginary part value of bio-impendence and characteristics frequency of pork decreased with the change of meat freshness.
Number of references:15
Main heading:Graphite electrodes
Controlled terms:Detectors - Meats - Model structures - Needles - Signal detection - Signal generators
Uncontrolled terms:Automatic frequency - Bio-impedance - Bio-impedance spectroscopy - Coefficient of variation - Coefficients of variabilities - Detection electrode - Imaginary parts - Meat quality - Non destructive - Phase detectors - Porcine meat - Prototype system - Real part - Sinusoidal signals - Steel electrodes - System models - Temperature variability
Classification code:914 Safety Engineering - 822.3 Food Products - 819.6 Textile Mills, Machinery and Equipment - 716.1 Information Theory and Signal Processing - 715 Electronic Equipment, General Purpose and Industrial - 713.5 Other Electronic Circuits - 704.1 Electric Components - 462.1 Biomedical Equipment, General - 408 Structural Design
DOI:10.3969/j.issn.1002-6819.2009.12.025
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 17>
Accession number:20100812731098
Title:Background and external defects segmentation of navel orange based on mask and edge gray value compensation algorithm
Authors:Li, Jiangbo (1); Rao, Xiuqin (1); Ying, Yibin (1); Ma, Benxue (1); Guo, Junxian (1)
Author affiliation:(1) College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
Corresponding author:Rao, X.
(xqrao@zju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:133-137
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Detection of fruits surface defects is always a challenging project for automated fruit grading of computer vision. A new method was developed to solve the problem of a part of defects easily being mistaken for the background when the fruits with defects were segmented from the background. First the B-component image of navel orange was extracted and built mask, then R-component image was masked by B-component image, thus 100% fruits and background segmentation with intact defects was achieved. Considering false segmentation of defects owing to the lower edge gray values of spherical fruits, an algorithm of fast fruit image edge gray value compensation was advanced. Using this algorithm, six kinds of common defects of navel orange, for a total of 220 images, setting the threshold for 165, the defects of different gray value was successfully segmented at one time. The highest segmentation rate was 100% and the lowest was 79.5%. Test results showed that the segmentation efficiency of the defects was improved as a result of the use of a single threshold.
Number of references:21
Main heading:Surface defects
Controlled terms:Computer vision - Edge detection - Fruits
Uncontrolled terms:Background segmentation - Compensation algorithm - Fruit grading - Gray value - Image edge - Navel orange - Test results
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 821.4 Agricultural Products - 751.1 Acoustic Waves - 741.2 Vision - 951 Materials Science - 741.1 Light/Optics - 723.5 Computer Applications - 716 Telecommunication; Radar, Radio and Television - 421 Strength of Building Materials; Mechanical Properties - 731.6 Robot Applications
DOI:10.3969/j.issn.1002-6819.2009.12.024
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 18>
Accession number:20100812731089
Title:Design of distributed navigation control system for rice transplanters based on controller area network
Authors:Hu, Lian (1); Luo, Xiwen (1); Zhang, Zhigang (1); Zhao, Zuoxi (1)
Author affiliation:(1) Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Guangzhou 510642, China; (2) College of Engineering, South China Agricultural University, Guangzhou 510640, China
Corresponding author:Luo, X.
(xwluo@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:88-92
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A CAN-based distributed control system was developed to improve the reliability of automatic guidance for rice transplanter. This system included a master node and three slave nodes. The master node, which used AT91SAM9261 embedded CPU, utilized RTK GPS data and compass data to generate appropriate control commands. By adopting C8051F040 as the key control chip, three slave nodes realized steering control, speed control and transplanting instrument lever control, respectively. A communication protocol was presented for the distributed control network. Road tracking test and paddy field test were carried out based on SPU-68 rice transplanter. Testing results demonstrated that the system was able to transfer and receive real-time messages reliably. And the transplanter could complete all the field operations, such as tracking trajectory, automatic steering, speed changing and transplanting, etc. Road and paddy field testing results also showed that the line trajectory track errors were less than 0.05 m and 0.2 m, respectively, which basically met the requirements of rice transplanting.
Number of references:16
Main heading:Controllers
Controlled terms:Communication systems - Control system synthesis - Distributed parameter control systems - Global positioning system - Network protocols - Roads and streets
Uncontrolled terms:Automatic guidance - Automatic guidence - Automatic steering - Communication protocols - Communication system control - Control command - Controller area network - Distributed control - Distributed Control System - Distributed navigation - Embedded CPU - Field operation - Key control - Line trajectory - Paddy fields - Rice transplanter - Road tracking - RTK-GPS - Steering control - Testing results - Tracking trajectory
Classification code:732.1 Control Equipment - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 943.3 Special Purpose Instruments - 716.3 Radio Systems and Equipment - 655.2.1 Communication Satellites - 406.2 Roads and Streets - 716 Telecommunication; Radar, Radio and Television
DOI:10.3969/j.issn.1002-6819.2009.12.015
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 19>
Accession number:20100812731133
Title:Postharvest physiology and storage technology of Xinjiang Kashi sweet pomegranate
Authors:Zhu, Huibo (1); Zhang, Youlin (1); Gong, Wenxue (1); Yu, Yueying (1)
Author affiliation:(1) College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
Corresponding author:Zhang, Y.
(youlinzh@snnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:339-344
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The storage technology of Kashi sweet pomegranates was explored by investigating the postharvest physiology under six different treatments. The soluble solids contents, reducing sugar contents, titratable acid contents and ascorbic acid contents were measured for the sweet pomegranates with different treatments. The fresh-cut pomegranate skin was taken to measure the tannin contents, the ascorbic acid oxidase activity and the peroxidase activity. The pericarp browning index and the merchandise fruit rate was measured during the preservation period. The experimental results showed that the postharvest Kashi sweet pomegranates which were fumigated for 1.5 h with 4.5% TBZ at the rate 5 g/m<sup>3</sup> and then each packaged with 0.02-mm-thick plastic bag could keep a merchandise fruit rate of more than 90% after stored for 120 days in a cold storage house with temperature (2±1)°C and relative humidity of 85%-90%. The pomegranates after storage appear generally sweet and sour taste, brightly-colored pomegranates skins and have a high value in merchandise.
Number of references:23
Main heading:Agricultural products
Controlled terms:Atmospheric humidity - Cold storage - Computer crime - Ketones - Organic acids - Plants (botany) - Plastic containers - Sugar (sucrose)
Uncontrolled terms:Ascorbic acids - Browning index - Fresh-cut - Kashi sweet pomegranate - Oxidase activity - Peroxidase activities - Postharvest - Preservation period - Reducing sugars - Relative humidities - Soluble solids content - Storage technology - Titratable acid - Xinjiang
Classification code:822.3 Food Products - 821.4 Agricultural Products - 817.1 Polymer Products - 804.1 Organic Compounds - 723 Computer Software, Data Handling and Applications - 902.3 Legal Aspects - 694.4 Storage - 691 Bulk Handling and Unit Loads - 644.3 Refrigeration Equipment and Components - 461.9 Biology - 443.1 Atmospheric Properties - 694 Packaging
DOI:10.3969/j.issn.1002-6819.2009.12.059
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 20>
Accession number:20100812731096
Title:Design of engine air-fuel ratio test system based on universal exhaust gas oxygen sensor
Authors:Jiang, Yaohua (1); Gu, Ming (1); Cao, Yang (1); Wang, Bin (1)
Author affiliation:(1) Department of Watercraft Engineering, Zhenjiang Watercraft College of People's Liberation Army, Zhenjiang 212003, China
Corresponding author:Jiang, Y.
(winton1999@sohu.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:124-127
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For realizing the accurate feedback control of engine electronic control system on air-fuel ratio and facilitating the diagnosis of engine an air-fuel ratio acquisition-display system and a PC monitor system were developed based on the working principle of universal exhaust gas oxygen (UEGO) sensor. The corresponding relationship between the output voltage and the air-fuel ratio in the system was calibrated. The test systems were also validated on the engine testing bench. The results showed that the systems had high sensitivity and fast response time (100 ms). Meanwhile, the designed systems could show the testing data directly. Those two systems were proposed to be used in the development of engine closed loop air-fuel ratio control and on-board diagnostics (OBD) system.
Number of references:15
Main heading:Monitoring
Controlled terms:Air engines - Calibration - Closed loop control systems - Diesel engines - Electronics industry - Engines - Fuels - Oxygen - Oxygen sensors - Power electronics - Sensors
Uncontrolled terms:Air fuel ratios - Air-fuel ratio - Air-fuel ratio control - Closed loops - Display system - Engine electronic control system - Engine testing - Fast response time - High sensitivity - On-board diagnostics - Output voltages - PC monitors - Test systems - Testing data - Universal exhaust gas oxygen sensor - Working principles
Classification code:715 Electronic Equipment, General Purpose and Industrial - 715.2 Industrial Electronic Equipment - 731.1 Control Systems - 732.2 Control Instrumentation - 801 Chemistry - 801.2 Biochemistry - 804 Chemical Products Generally - 902.2 Codes and Standards - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 961 Systems Science - 714 Electronic Components and Tubes - 462.1 Biomedical Equipment, General - 522 Gas Fuels - 523 Liquid Fuels - 524 Solid Fuels - 612 Engines - 612.2 Diesel Engines - 617.3 Steam Engines - 632.4 Pneumatic Equipment and Machinery - 641 Heat and Mass Transfer; Thermodynamics - 654.2 Rocket Engines - 712 Electronic and Thermionic Materials - 713 Electronic Circuits - 713.5 Other Electronic Circuits
DOI:10.3969/j.issn.1002-6819.2009.12.022
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 21>
Accession number:20100812731124
Title:Reclamation technology on preventing heavy metal pollution from landfill of indigenous zinc smelting areas
Authors:Ao, Ziqiang (1); Yan, Chongling (1); Lin, Wenjie (2); Qu, Liya (2); Liu, Jingchun (1); Guan, Xinxin (1); Wu, Guirong (1)
Author affiliation:(1) School of Life Sciences, Xiamen University, Xiamen 361005, China; (2) Guizhou Research and Designing Institute of Environmental Science, Guiyang 550002, China
Corresponding author:Yan, C.
(ycl@xmu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:285-290
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Due to indigenous zinc smelting, lots of lands were polluted and abandoned in Hezhang County, Guizhou Province. The reclamation of polluted soils is becoming more important to improve environmental protection and to prompt agricultural production in these areas. In the present study, total of nine treatments of different amount of lime (0, 25 and 50 kg/m<sup>2</sup>) was used as isolation layer in the flat slag heap, and then the isolation layer was covered with different amount of non-contamination soil (30, 45 and 60 cm), respectively. During the following two years, bean (Phaseolus angularis), Chinese cabbage (Brassica chinensis), maize (Zea mays) and potato (Solanum tuberosum) were planted, concentrations of some metals (Zn, Pb, Cd) in soils and the edible part of the crops were determined to assess the effects of reclamation by statistical analysis of One-Way ANOVA (LSD). The results indicated that metal concentrations in edible part of the crops were decreased by the treatments of limestone isolation layer; maize had the lowest enrichment factor of heavy metals among the four crops, while Chinese cabbage had the highest content, demonstrating that maize was more suitable to be cultivated compared with the others, lime as isolation layer could significantly reduce the accumulation of heavy metals in the edible part of the crops, and 25 kg/m<sup>2</sup> lime isolation layer combined with 30 cm non-contamination soil cover showed the effective reclamation result.
Number of references:17
Main heading:Soil pollution
Controlled terms:Cadmium - Crops - Land reclamation - Lead - Lime - Metals - Reclamation - Slags - Soils - Zinc - Zinc smelting
Uncontrolled terms:Agricultural productions - Brassica - Chinese cabbage - Enrichment factor - Enrichment factors - Guizhou Province - Heavy metal pollution - Indigenous zinc smelting area - Metal concentrations - Phaseolus angularis - Polluted soils - Reclamation technologies - Soil cover - Solanum tuberosum - Statistical analysis - Zea mays
Classification code:533.2 Metal Refining - 545.3 Steel - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 549.3 Others, including Bismuth, Boron, Cadmium, Cobalt, Mercury, Niobium, Selenium, Silicon, Tellurium and Zirconium - 614.2 Steam Power Plant Equipment and Operation - 804.2 Inorganic Compounds - 821.2 Agricultural Chemicals - 821.4 Agricultural Products - 532.2 Blast Furnaces - 406 Highway Engineering - 412 Concrete - 413 Insulating Materials - 442.2 Land Reclamation - 452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 454.2 Environmental Impact and Protection - 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography
DOI:10.3969/j.issn.1002-6819.2009.12.050
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 22>
Accession number:20100812731083
Title:Evaluation method of soil water distribution uniformity under conditions of field subsurface drip irrigation
Authors:Zai, Songmei (1); Wu, Feng (2); Wen, Ji (3); Wang, Zhaohui (1)
Author affiliation:(1) College of Resources and Environmental Sciences, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) College of Water Resources and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China; (3) Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China
Corresponding author:Wu, F.
(ntggswf@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:51-57
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Uniformity is one of the important indicators for the evaluation of irrigation quality, and soil water distribution uniformity is the ultimate expression of irrigation uniformity. Selection of suitable sampling numbers of soil water is the base for economical and accurate evaluation of soil water distribution uniformity after irrigation. Field measurement of soil moisture distribution was measured in the cotton field under subsurface drip irrigation in Xinjiang Uygur Autonomous Region, 2 days after irrigation when the soil moisture had reached a relative stability. Relationship between sampling numbers and soil moisture distribution characteristics, and soil water distribution uniformity were analyzed. Results showed that the coefficient C<inf>u</inf> of soil water distribution was close to its mean value with increasing of samples. From the quantitative analysis of samples, the mean of C<inf>u</inf> was not obvious change as sample number increase from 15 to 60. Under the condition of experiment, the desirable number of samples should be more than 24 for field soil moisture monitoring and evaluation. There was a significant relevance between C<inf>u</inf> and the distribution uniformity (D<inf>u</inf>). But a certain deviation occured between the coefficients derived from the measured data and that recommended by the United States Department of Agriculture. And this should be taken into account when such exchange formula was used. Using uniform 25-point sampling method, soil water distribution of subsurface drip irrigation in cotton fields was evaluated. Results showed that soil moisture uniformity in the vicinity of drip line (20-40 cm) was lower than that in the upper and below layer of drip line before irrigation, and would increase after irrigation, compared with the upper and lower layers. Soil moisture variation near the drip line is the largest in the soil under subsurface drip irrigation.
Number of references:15
Main heading:Soil surveys
Controlled terms:Agriculture - Cotton - Gene expression - Groundwater - Moisture control - Moisture determination - Moisture meters - Permittivity - Quality control - Sampling - Soil moisture - Subirrigation - Underwater soils - Water distribution systems - Water supply
Uncontrolled terms:Coefficient c - Distribution uniformity - Evaluation Method - Field - Field measurement - Field soil - Irrigation uniformity - Mean values - Measured data - Number of samples - Point sampling - Quantitative analysis - Relative stabilities - Sample number - Soil moisture distribution - Soil water - Soil-water distribution - Subsurface drip irrigation - United states department of agricultures - Xinjiang Uygur autonomous region
Classification code:801 Chemistry - 819.1 Natural Fibers - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 821.4 Agricultural Products - 913.3 Quality Assurance and Control - 922.1 Probability Theory - 944.1 Moisture Measuring Instruments - 944.2 Moisture Measurements - 731.3 Specific Variables Control - 406.2 Roads and Streets - 444.2 Groundwater - 446.1 Water Supply Systems - 461.8.1 Genetic Engineering - 461.9 Biology - 471.1 Oceanography, General - 483.1 Soils and Soil Mechanics - 701 Electricity and Magnetism - 708.1 Dielectric Materials
DOI:10.3969/j.issn.1002-6819.2009.12.009
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 23>
Accession number:20100812731122
Title:Evaluation and decision-making for selecting cultivated land into prime farmland
Authors:Wu, Fei (1); Pu, Lijie (1); Xu, Yan (1); Zhu, Ming (1)
Author affiliation:(1) School of Geography and Ocean Sciences, Nanjing University, Nanjing 210093, China; (2) Territorial Resources Department of Jiangsu, Nanjing 210029, China; (3) Key Laboratory of Land Use Ministry of Land and Resources, Beijing 100029, China
Corresponding author:Pu, L.
(ljpu@nju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:270-277
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Considering that there is not a systematic evaluation method for prime farmland selection and assignation, an evaluation index system was built up including soil quality, grain production, land use status and regional economic level. Aiming at food security, prime farmland protection target of Jiangsu Province was assigned to each county based on a combinatorial evaluation method. The results showed that social and economic factors weighted much more than soil quality and grain production in the assignation. With rapid urbanization and industrialization, most of the counties in Jiangsu Province had reached a precipice of farmland lost and desiderated a transformation of development model to an intensive one. The research would contribute to prime farmland planning in the new run of the land use comprehensive planning.
Number of references:20
Main heading:Farms
Controlled terms:Indexing (of information) - Land use - Planning - Regional planning - Soils - Targets
Uncontrolled terms:Comprehensive planning - Cultivated lands - Development model - Economic factors - Economic level - Evaluation index system - Evaluation Method - Food security - Grain production - Indexing - Jiangsu province - Soil quality - Systematic evaluation
Classification code:912.2 Management - 903.1 Information Sources and Analysis - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 932.1.1 Particle Accelerators - 483.1 Soils and Soil Mechanics - 403.2 Regional Planning and Development - 403 Urban and Regional Planning and Development - 442.2 Land Reclamation
DOI:10.3969/j.issn.1002-6819.2009.12.048
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 24>
Accession number:20100812731102
Title:Intelligent monitoring system for ultraviolet sterilization room based on Doppler shift
Authors:Jiang, Tao (1); Zhang, Yunwei (1); He, Fang (1)
Author affiliation:(1) Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650093, China
Corresponding author:Zhang, Y.
(zhangyunwei72@gmail.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:156-160
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reduce the risk of operators irradiated by the ultraviolet (UV) lamp in sterilization room, an intelligent monitoring system for ultraviolet sterilization room was designed based on Doppler shift. A biological recognition method by feature detection of human body on the move was presented, and the mathematical model of Doppler shift was established. The sample of biological recognition module was produced, and the experimental platform employing SPCE061A microcontroller units (MCU) were developed. The experiments of biological recognition were carried out. The experimental results show that the recognition probability of the intelligent monitoring system can reach 99.58%. This can meet the requirement in actual application.
Number of references:15
Main heading:Speech recognition
Controlled terms:Doppler effect - Lighting - Mathematical models - Mathematical operators - Monitoring - Sterilization (cleaning) - Ultrasonic applications - Ultrasonics - Ultraviolet lamps
Uncontrolled terms:Biological recognition - Doppler shift - Doppler shifts - Experimental platform - Feature detection - Human bodies - Intelligent monitoring systems - Microcontroller unit - Recognition probability - Ultra-violet - Ultraviolet sterilization
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 753.1 Ultrasonic Waves - 753.3 Ultrasonic Applications - 802.3 Chemical Operations - 822.2 Food Processing Operations - 921 Mathematics - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 751.5 Speech - 462.1 Biomedical Equipment, General - 707 Illuminating Engineering - 707.2 Electric Lamps - 751.1 Acoustic Waves - 711.1 Electromagnetic Waves in Different Media - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 723.5 Computer Applications
DOI:10.3969/j.issn.1002-6819.2009.12.028
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 25>
Accession number:20100812731091
Title:Comparative analysis of quantitative sieving methods of quality evaluation indicators for rotating sprinklers
Authors:Zhao, Hua (1); Xu, Di (1); Gong, Shihong (1)
Author affiliation:(1) National Center for Quality Supervision and Test of Agricultural Irrigation and Drainage Equipment, Beijing 100044, China; (2) China Institute of Water Resources and Hydropower Research, Beijing 100044, China
Corresponding author:Zhao, H.
(zhaohua@iwhr.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:97-101
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Quantitative sieving for the quality evaluation indicators of water saving irrigation products can achieve the purpose of evaluating the product quality only by representative indicators. According to the test data, quality evaluation indicators for rotating sprinklers were sieved by means of cluster analysis and principal component analysis. Effectiveness and applicability of two methods were given in comparative analysis. Results showed that the quantitative sieving results of two methods are basically similar, and spraying range and height have the maximum correlation among seven common quality evaluation indicators for rotating sprinklers. Spraying height could be deleted, while spray range should be reserved in the quality evaluation indicators for the common sprinklers with middle and low spray ranges for field irrigation. The cluster analysis focused on the correlation between two indicators, whereas principal component analysis focused on the correlation among total indicators, therefore the latter was seemly more effective for quantitative sieving of quality evaluation indicators for the rotating sprinklers and other water saving irrigation products.
Number of references:19
Main heading:Quality control
Controlled terms:Cluster analysis - Hose - Principal component analysis - Rotation - Sprinkler systems (fire fighting) - Sprinkler systems (irrigation) - Water analysis - Water conservation
Uncontrolled terms:Comparative analysis - Evaluation indicators - Maximum correlations - Product quality - Quality evaluation - Sprinkler systems - Test data - Water-saving irrigation
Classification code:931.1 Mechanics - 922.2 Mathematical Statistics - 922 Statistical Methods - 914.2 Fires and Fire Protection - 913.3 Quality Assurance and Control - 821.1 Agricultural Machinery and Equipment - 801 Chemistry - 723 Computer Software, Data Handling and Applications - 619.1 Pipe, Piping and Pipelines - 601.1 Mechanical Devices - 445.2 Water Analysis - 444 Water Resources - 403.1 Urban Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.017
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 26>
Accession number:20100812731116
Title:Experiments on spraying characteristics of biodiesel using phase Doppler particle analyzer
Authors:Ye, Lihua (1); Shi, Aiping (2); Yuan, Yinnan (1); Sun, Ping (1); Zhang, Chunfeng (1)
Author affiliation:(1) School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China; (2) School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Shi, A.
(shap@ujs.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:240-244
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The combustion process of diesel has a direct effect on engine power, economy and emissions. Moreover, the atomization quality of fuel injection is the most important factor affecting combustion process. Therefore, spray characteristics of bio-diesel, diesel and the mixture of bio-diesel and diesel were studied in this paper. Spray field of bio-diesel and mixed fuel in a model cylinder were measured by PDPA (Phase Doppler Particle Analyzer). Test data such as distribution of velocity, diameter of oil drop and concentration in the spray field were obtained. The results show that the diameter of nozzle orifice gives a great impact on atomization beyond the core area of the spray. The smaller the orifice diameter, the better the spray atomization. The injection pressure have little influences on the spray field of bio-diesel. Compared with fossil diesel fuel, bio-diesel performed worse spray characteristics. SMD (Sauter mean diameter) of bio-diesel is bigger than that of fossil diesel fuel under the same condition. The higher the pump speed is, the smaller the diameter and fluctuation velocity of droplet are.
Number of references:13
Main heading:Diesel engines
Controlled terms:Atomization - Biodiesel - Combustion - Diesel fuels - Jets - Orifices - Spray nozzles - Two phase flow
Uncontrolled terms:As distribution - Atomization quality - Combustion pro-cess - Core area - Engine power - Fluctuation velocities - Injection pressures - Mixed fuel - Nozzle orifice - Oil drops - Orifice diameters - Phase Doppler particle analyzer - Phase Doppler particle analyzer(PDPA) - Pump speed - Sauter mean diameters - Spray atomization - Spray characteristics - Spray field - Test data
Classification code:521.1 Fuel Combustion - 523 Liquid Fuels - 612.2 Diesel Engines - 619.1 Pipe, Piping and Pipelines - 631.1 Fluid Flow, General - 802.3 Chemical Operations
DOI:10.3969/j.issn.1002-6819.2009.12.042
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 27>
Accession number:20100812731126
Title:Quantitative analysis of cultivated land safety in Zhangjiagang City based on BP-MC networks
Authors:Qian, Yurong (1); Li, Jianlong (1); Wang, Weiyuan (3); Yang, Feng (1); Yang, Qi (1); Zhang, Jie (1)
Author affiliation:(1) School of Life Science, Nanjing University, Nanjing 210093, China; (2) Software College, Xinjiang University, Urumqi 830000, China; (3) Xinjiang Military Area Command, Urumqi 830042, China
Corresponding author:Li, J.
(jlli2008@nju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:299-305
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In recent years, cultivated land was occupied continually, which had threatened the grain safety of city. Remote sensing is a powerful tool for protecting cultivated land by means of accurate inspecting the urban expansion and land use cover and change in time. Combined with the principle of general Monte Carlo, the relationships among cultivated land, road, urban expansion, GDP and industry economic structure were analyzed deeply using BP artificial neural networks based on TM remote sensing images, land use map and yearbook of Zhangjiagang City in several years. The results demonstrated that the cultivated land area decreased about 2.5% per year in the past ten years, however the general agriculture output had a small rebound after 2002, this attributed to the government optimized policy to land use and restructure of agriculture and industry. The expansion trends of Zhangjiagang City was the spread of multi-core along the road. Cultivated land within 2 km far from the main road and city zone was most likely changed into the urban area, especially within 500 meters. The rapid development of economic resulted in an increased transformation probability of cultivated land to urban land. However, transformation probability decreased gradually with the balance between urban land and cultivated land. So the relationship between transformation probability and GDP present an inverted "U" curve. In conclusion, BP-MC networks deal with training set of a large number of pixels, this avoids artificial neural network stepping into the local minimum point, and it is an effective method to analyze the drive factors of urban expansion quantitatively.
Number of references:22
Main heading:Neural networks
Controlled terms:Agriculture - Backpropagation - Economics - Expansion - Image reconstruction - Land use - Monte Carlo methods - Probability - Remote sensing - Roads and streets
Uncontrolled terms:Artificial Neural Network - BP artificial neural network - Cultivated lands - Decrease of cultivated land - Economic structure - Local minimum point - Main roads - MONTE CARLO - Multi core - Quantitative analysis - Rapid development - Remote sensing images - Training sets - Urban areas - Urban expansion
Classification code:971 Social Sciences - 741 Light, Optics and Optical Devices - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 911.2 Industrial Economics - 922.1 Probability Theory - 922.2 Mathematical Statistics - 951 Materials Science - 731.1 Control Systems - 723.2 Data Processing and Image Processing - 461.1 Biomedical Engineering - 442.2 Land Reclamation - 406.2 Roads and Streets - 403 Urban and Regional Planning and Development - 723.4 Artificial Intelligence
DOI:10.3969/j.issn.1002-6819.2009.12.052
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 28>
Accession number:20100812731121
Title:Effect of composting on volatilization and degradation of organo-chlorine pesticide
Authors:Wang, Yujun (1); Dou, Sen (1); Zhang, Xiaomei (1); Li, Wenpeng (1)
Author affiliation:(1) College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118, China
Corresponding author:Dou, S.
(dousen@tom.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:265-269
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Aerobic composting treatments using chicken manure and corn straw as the composting material at high temperature were performed in order to study the effect of composting on the volatilization and degradation of HCH and DDT. The study show that 20.6% of HCH and 13.8% of DDT volatilized due to high temperature and ventilation during the period of composting, which accelerated the volatilization of HCH and DDT to gas phase within 30 days. Apart from the effect of high temperature and ventilation on the volatilization of organochlorine pesticides, the degradation rates of HCH and DDT in the treatment without microbial inoculums were 37.2% and 14.9%, respectively. The degradation rates of HCH and DDT in the treatment with microbial inoculums were 42.1% and 24.2%, respectively. The significant difference between the treatment without microbial inoculums and the one with microbial inoculums was found. The degradation rates of α-HCH and θ-HCH were higher than those of β-HCH and γ-HCH. The degradation rates of pp'-DDT and op'-DDT were higher than those of pp'-DDD and pp'-DDE. The results indicate that high temperature and ventilation accelerated the volatilization of HCH and DDT to the gas phase during the composting and the biochemical reactions in this process contributed to the degradation of organochlorine pesticides such as HCH and DDT.
Number of references:16
Main heading:Degradation
Controlled terms:Biodegradation - Chlorine - Gases - Manures - Pesticide effects - Ventilation - Waste treatment
Uncontrolled terms:Aerobic composting - Biochemical reactions - Chicken manure - Corn straws - Degradation rate - Dichlorodiphenyltrichloroethane - Gasphase - Hexachlorocyclohexane - Hexachlorocyclohexanes - High temperature - Microbial inoculums - Organochlorine pesticides
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 821.5 Agricultural Wastes - 821.2 Agricultural Chemicals - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 801.2 Biochemistry - 643.5 Ventilation - 461.8 Biotechnology - 454.2 Environmental Impact and Protection - 453.1 Water Pollution Sources - 452.4 Industrial Wastes Treatment and Disposal - 452.3 Industrial Wastes
DOI:10.3969/j.issn.1002-6819.2009.12.047
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 29>
Accession number:20100812731084
Title:Laboratory simulation experiment on nitrogen transformation and distribution under condition of film hole irrigation with urea solution
Authors:Cheng, Dongjuan (1); Zhao, Xinyu (2); Fei, Liangjun (3)
Author affiliation:(1) Hydropower College, Hebei Engineering University, Handan 056021, China; (2) Department of Hydraulic Engineering, Technology College of Nanchang, Nanchang 330099, China; (3) Water Resource Research Institute, Xi'an University of Technology, Xi'an 710048, China
Corresponding author:Cheng, D.
(handanchengdongjuan@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:58-62
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For improving the use efficiency of nitrogen fertilizer and decreasing the losses of nitrogen fertilizer, the rules of nitrogen transformation and distribution under film hole irrigation with urea solution were studied through laboratory simulation experiment. The results showed that the ammonium nitrogen mainly distributed around film hole and decreased with the increasing of distance from film hole. The ammonium nitrogen content increased gradually in the early 0-5 d and decreased subsequently after the fifth day. The nitrification was weak before the seventh day and the nitrate nitrogen content in the top soil layer was lower than background value. The nitrification was enhanced after the seventh day. The nitrate nitrogen content in the top soil layer was more than background value; the nitrate nitrogen content in the horizontal direction was more than in the vertical direction after the seventh day. During the course of urea transformation, the decrement of ammonium nitrogen was far more than the increment of nitrate nitrogen. The research results provide reference for further study of film hole irrigation and fertilizer application.
Number of references:16
Main heading:Urea fertilizers
Controlled terms:Ammonium compounds - Denitrification - Experiments - Fertilizers - Irrigation - Metabolism - Nitrates - Nitrification - Nitrogen - Oxidation - Soils - Urea
Uncontrolled terms:Ammonium nitrogen - Background value - Distribution - Fertilizer applications - Film hole irrigation - Film holes - Laboratory simulation - Nitrate nitrogen - Nitrogen transformations - Research results - Top-soil layer - Urea solutions - Use efficiency - Vertical direction
Classification code:901.3 Engineering Research - 821.3 Agricultural Methods - 821.2 Agricultural Chemicals - 815.1.1 Organic Polymers - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 804 Chemical Products Generally - 802.2 Chemical Reactions - 801.2 Biochemistry - 483.1 Soils and Soil Mechanics - 461.9 Biology
DOI:10.3969/j.issn.1002-6819.2009.12.010
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 30>
Accession number:20100812731082
Title:Characteristics of grape growth under drip irrigation condition in extremely arid regions
Authors:Yang, Yanfen (1); Wang, Quanjiu (1); Bai, Yungang (3); Cai, Junshe (4); Zeng, Chen (2)
Author affiliation:(1) Water Resources Institute, Xi'an University of Technology, Xi'an 710048, China; (2) State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest Agriculture and Forestry University, Yangling 712100, China; (3) Xinjiang Institute of Water Resources and Hydropower Research, Urumqi 830049, China; (4) Xinjiang Grapes and Melons Research and Development Centre, Shanshan 838201, China
Corresponding author:Wang, Q.
(wquanjiu@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:45-50
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Soil moisture is different under different layout style of drip irrigation pipeline, which will affect crop growth and its yield. In this study, soil moisture and water physiological indexes under different treatments during grape ripeness were measured and analyzed in order to investigate the effect of layout style of pipeline and technical parameters of drip irrigation system on grape's growth, yield and select the optimal technique parameters of drip irrigation that suitable for TuHa Basin. The results show that the treatment with three surface drip irrigation pipelines, outlet flow of 2.7 L/h and the distance of 30 cm between the emitters has the optimal results. Under the condition of this treatment, soil moisture, grape's water physiological indexes and yield all reach a higher level.
Number of references:20
Main heading:Irrigation
Controlled terms:Arid regions - Fruits - Groundwater - Moisture determination - Permittivity - Physiological models - Pipelines - Soil moisture
Uncontrolled terms:Crop growth - Drip irrigation - Drip irrigation systems - Layout style of pipeline - Optimal results - Outlet flows - Physiological indices - Surface drip irrigations - Tuha Basin
Classification code:901.4 Impact of Technology on Society - 821.4 Agricultural Products - 821.3 Agricultural Methods - 708.1 Dielectric Materials - 701 Electricity and Magnetism - 944.2 Moisture Measurements - 619.1 Pipe, Piping and Pipelines - 461.1 Biomedical Engineering - 444.2 Groundwater - 444 Water Resources - 443 Meteorology - 483.1 Soils and Soil Mechanics
DOI:10.3969/j.issn.1002-6819.2009.12.008
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 31>
Accession number:20100812731094
Title:Influence of elastic deformation on lubricating characteristics of port plate pair of axial piston pump
Authors:Hu, Jibin (1); Zou, Yunfei (1); Li, Xiaojin (1); Lin, Shuo (1)
Author affiliation:(1) National Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, China
Corresponding author:Zou, Y.
(zyfbackstreet@bit.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:114-118
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Considering the magnitude of elastic deformation was the same as the film thickness of port plate pair under high pressure, the model of lubrication was established by the theory of elastohydrodynamic lubrication. The influence of elastic deformation on lubricating characteristics was analyzed using finite difference method. The results showed that the average film thickness increased by 14.48%, but the largest film pressure decreased by 18.6% in the elastic case. And the film load capacity and leakage increase obviously, but frictional torque decreases obviously in the condition of small film thickness. By contraries, the influence of elastic deformation on lubricating characteristics could be neglected in the condition of large film thickness beyond the film thickness 15 μm. The study lays a foundation for design and research on port plate pair of high-pressure axial piston pump.
Number of references:22
Main heading:Elastohydrodynamic lubrication
Controlled terms:Elastic deformation - Magnetic films - Reciprocating pumps
Uncontrolled terms:Axial piston pump - Film pressure - Frictional torque - High pressure - Load capacity - Piston pump - Port plate - Port plate pair
Classification code:421 Strength of Building Materials; Mechanical Properties - 607.2 Lubrication - 618.2 Pumps - 708.4 Magnetic Materials - 818 Rubber and Elastomers
DOI:10.3969/j.issn.1002-6819.2009.12.020
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 32>
Accession number:20100812731097
Title:Recognition method of position and attitude of eggplant fruits based on improved generalized Hough transforms
Authors:Yao, Lijian (1); Ding, Weimin (2); Zhang, Peipei (1); Liu, Jianjun (1)
Author affiliation:(1) College of Engineering, Zhejiang Forestry University, Hangzhou 311300, China; (2) College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author:Yao, L.
(yao_njau@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:128-132
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Taking eggplant fruits as examples, one method was introduced for recognizing position and attitude of object based on improved generalized Hough transforms (IGHT). Scaling and rotation operations were added to the parameter index list establishment, which enlarged the representative ranges of sample. And the method of "shape similarity degree" was adopted to primarily select scaling index and rotation index of images awaiting recognization, which could effectively reduce the searching scope. Properly increasing step size of gradient index could avoid excessive dispersion of array in accumulator, and make it easy to search the final reference point coordinates. The experiment demonstrated that the depth recovering results for large target and small target were decreased by 4.0 and 7.9 percentage points, respectively, by using improved generalized Hough transforms, and this method is feasible and effective to recognize different pose and partially occluded eggplant fruits.
Number of references:18
Main heading:Hough transforms
Controlled terms:Computer vision - Rotation
Uncontrolled terms:Generalized Hough transform - Gradient indexes - Object based - Parameter list - Percentage points - Recognition methods - Reference points - Rotation index - Rotation operations - Scaling index - Shape similarity - Small targets - Step size
Classification code:601.1 Mechanical Devices - 723.5 Computer Applications - 731.6 Robot Applications - 741.2 Vision - 921.3 Mathematical Transformations - 931.1 Mechanics
DOI:10.3969/j.issn.1002-6819.2009.12.023
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 33>
Accession number:20100812731113
Title:Sustainability evaluation on CDM project of biomass direct combustion power generation based on emergy theory
Authors:Luo, Yuhe (1); Ding, Lixing (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
Corresponding author:Ding, L.
(lxding@vip.sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:224-227
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The sustainability evaluation on the clean development mechanism (CDM) project of biomass direct combustion power generation required quantitative analysis from the aspects such as economic, social and environmental benefits. The emergy analysis of the CDM project was conducted and its emergy sustainability evaluation indexes were established with the emergy theory. As the case of 25 MW biomass direct combustion power generation CDM project in Central China, the system's sustainable performance was evaluated. The results showed that the CDM project could bring the benefit of 2.51 million US dollars annually for greenhouse gas (GHG) emission reduction. Because the benefit effectively increased the emergy yield ratio and reduced the environmental load of the power generation system, the system had not only been higher competitiveness, the emergy sustainability indexes of the system could be increased to 6.45 which can cause the system to be in the potential and sustainable development process for a long time.
Number of references:16
Main heading:Continuum damage mechanics
Controlled terms:Biomass - Combustion - Competition - Emission control - Energy policy - Global warming - Greenhouse gases - Leakage (fluid) - Smoke - Strategic planning - Sustainable development
Uncontrolled terms:Biomass direct combustion power generation - CDM projects - Clean Development Mechanism - Clean development mechanism (CDM) - Emergy analysis - Emergy theory - Emergy yield ratio - Environmental benefits - Environmental loads - Evaluation index - Power generation systems - Quantitative analysis - Sustainable performance - US dollar
Classification code:801.3 Colloid Chemistry - 804 Chemical Products Generally - 804.1 Organic Compounds - 805.1.1 Biochemical Engineering - 619.1 Pipe, Piping and Pipelines - 821.5 Agricultural Wastes - 911.2 Industrial Economics - 912.2 Management - 931.1 Mechanics - 901.4 Impact of Technology on Society - 525.6 Energy Policy - 443.1 Atmospheric Properties - 451 Air Pollution - 451.1 Air Pollution Sources - 451.2 Air Pollution Control - 421 Strength of Building Materials; Mechanical Properties - 452.1 Sewage - 483.1 Soils and Soil Mechanics - 521.1 Fuel Combustion - 525.1 Energy Resources and Renewable Energy Issues - 452.3 Industrial Wastes
DOI:10.3969/j.issn.1002-6819.2009.12.039
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 34>
Accession number:20100812731103
Title:Salinity forecasting of saline soil based on ANN and hyperspectral remote sensing
Authors:Wang, Jing (1); Liu, Xiangnan (3); Huang, Fang (1); Tang, Jilong (4); Zhao, Lengbing (5)
Author affiliation:(1) Key Laboratory of Vegetation Ecology of Education Ministry, Institute of Grassland Science, Northeast Normal University, Jilin 130024, China; (2) Key Laboratory for Wetland Ecology and Vegetation Restoration of National Environmental Protection, Northeast Normal University, Jilin 130024, China; (3) Information Engineering College, China University of Geosciences(Beijing), Beijing 100083, China; (4) College of Opto-electronic Engineering, Changchun University of Science and Technology, Jilin 130022, China; (5) Academy of Forestry Inventory and Planning of Jilin, Jilin 130022, China
Corresponding author:Wang, J.
(jingwang9966@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:161-166
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Soil salinization is a major problem of land degradation in arid and semi-arid agricultural area. It is crucial to detect the salinity of saline soils accurately and dynamicly in time in order to prevent soil salinization and achieve sustainable development in agriculture. Taking Changling County western Songnen Plain, as the example, this paper constructed remote sensing predictive model of saline soils using hyperspectral data. The salinity was measured by electric conduction method, and hyperspectral data was collected using ASD spectrometer. Derivative transformation of spectral reflectance was used to select best spectral bands which can represent the salinity of saline soils, e.g. 550, 720, 760, 820 and 940 nm. The best performance was achieved in the 5-6-1 architecture (R<sup>2</sup> = 0.895, RMSE = 0.089) in 72 different architectures in the three- and four-layer networks. Compared with traditional regression model (R<sup>2</sup> = 0.81, RMSE = 0.25), the method combining hyperspectral data with artificial neural network can improve the predictive accuracy of saline soil, showing that artificial neural network is prominently advanced in establishing the relationships between spectral reflectance and soil parameters.
Number of references:26
Main heading:Neural networks
Controlled terms:Electric load forecasting - Forestry - Geologic models - Reflection - Regression analysis - Remote sensing - Salinity measurement - Soils - Strategic planning
Uncontrolled terms:Agricultural areas - Artificial Neural Network - Electric conduction - HyperSpectral - Hyperspectral Data - Hyperspectral remote sensing - Land degradation - Layer networks - Predictive accuracy - Predictive models - Regression model - Salination - Saline soil - Semi arid - Soil parameters - Soil salinization - Songnen plain - Spectral band - Spectral reflectances
Classification code:943.3 Special Purpose Instruments - 723.4 Artificial Intelligence - 731.1 Control Systems - 741.1 Light/Optics - 821.0 Woodlands and Forestry - 912.2 Management - 922.2 Mathematical Statistics - 711 Electromagnetic Waves - 483.1 Soils and Soil Mechanics - 481.1 Geology - 471.4 Seawater, Tides and Waves - 461.1 Biomedical Engineering - 444 Water Resources - 706.1 Electric Power Systems
DOI:10.3969/j.issn.1002-6819.2009.12.029
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 35>
Accession number:20100812731130
Title:Optimization of conditions for organochlorine pesticide residues removal in apples using ultrasonic
Authors:Yue, Tianli (1); Zhou, Zhengkun (1); Yuan, Yahong (1); Gao, Zhenpeng (1); Zhang, Xiaorong (1)
Author affiliation:(1) College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Yue, T.
(yuetl@nwsuaf.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:324-330
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:China is the largest country in apple-producing in the world, but its apple export just accounts for less than 10% of world trade market. One of the main constraints is the pesticide residues in apples. The ultrasonic removal of organochlorine pesticide residues in apples was studied, and the response surface method was applied to analyze the influence of ultrasonic power, degradation time and degradation temperature on the removal rate. The influence of main quality indexes in apples caused by ultrasonic wave was also studied. The results indicated that: (1) The optimum removal conditions of organochlorine pesticide residues in apples were as follows: the ultrasonic power 609.16 W, the removal time 70.46 min, the removal temperature 15.45°C, and under this condition, the removal rate of organochlorine pesticide residues in theory could reached to 64.32%; (2) The rigidity of apples was not significant between the 17 groups of sonication samples and CK; whereas, the total sugar, total acid had a significant impact, but did not exceed national standards and apple quality standards of major exporter. Ultrasonic is an easy and quick handling technology, and can remove organochlorine pesticide residues effectively, enhance the safety of apple greatly. It is easy and available to couple with the cleaning, grading and waxing of fresh apple at present, and its industrialization has very broad prospects.
Number of references:25
Main heading:Fruits
Controlled terms:Degradation - International trade - Pesticides - Sugar (sucrose) - Surface properties - Ultrasonics
Uncontrolled terms:Apple fruits - Degradation temperatures - Degradation time - National standard - Optimum removal conditions - Organochlorine pesticide residues - Pesticide residue - Quality indices - Quality standard - Removal rate - Removal time - Response surface method - Response Surface Methodology - Significant impacts - Ultrasonic power - World trade
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 911.4 Marketing - 902.3 Legal Aspects - 822.3 Food Products - 951 Materials Science - 821.4 Agricultural Products - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 753.1 Ultrasonic Waves - 821.2 Agricultural Chemicals
DOI:10.3969/j.issn.1002-6819.2009.12.056
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 36>
Accession number:20100812731101
Title:Prediction of forage quality of maize stover by near infrared spectroscopy
Authors:Tai, Shujing (1); Zhang, Renhe (1); Shi, Juntong (1); Xue, Jiquan (1); Zhang, Xinghua (1); Ma, Guosheng (1); Lu, Haidong (1)
Author affiliation:(1) College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Xue, J.
(xjq2934@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:151-155
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reliably, conveniently and rapidly analyze and evaluate forage quality of maize stover, the samples of maize stover from different varieties and treatments of density, nitrogenous fertilizer and water were used to establish near infrared reflectance spectroscopy (NIRS) calibration models of in vitro dry matter digestion (IVDMD), acid detergent fiber (ADF), neutral detergent fiber (NDF) and water soluble carbohydrate (WSC) of maize stover with near infrared reflectance spectroscopy (NIRS) technique, partial least square regression (PLS) and data pretreatment of 1st derivative+mean center+Multiple scatter correction. The results showed that determination coefficients of calibration (R<inf>cal</inf><sup>2</sup>) about those models were 0.9906, 0.9870, 0.9931 and 0.9802 and those of cross validation (R<inf>cv</inf><sup>2</sup>) and validation (R<inf>val</inf><sup>2</sup>) were 0.9593(0.9549), 0.9413(0.9353), 0.9678(0.9519) and 0.9342(0.9191) for IVDMD, ADF, NDF and WSC, respectively. Standard error of calibration, cross validation and prediction (SEC, SECV and SEP) ranged from 0.935 to 1.904. All values of relative percent differences (RPD) were greater than three. It demonstrated that these calibration models could be used to rapidly and accurately predict forage quality of maize stover and screen various samples in maize breeding.
Number of references:28
Main heading:Infrared spectroscopy
Controlled terms:Calibration - Carbohydrates - Detergents - Fibers - Infrared devices - Infrared transmission - Near infrared spectroscopy - Reflection - Water analysis
Uncontrolled terms:Dry matters - In-vitro - Maize stover - Near infrared reflectance spectroscopy - Water soluble carbohydrate - Water-soluble carbohydrates
Classification code:819.4 Fiber Products - 902.2 Codes and Standards - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 941 Acoustical and Optical Measuring Instruments - 941.4 Optical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 817 Plastics and Other Polymers: Products and Applications - 445.2 Water Analysis - 711 Electromagnetic Waves - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 801 Chemistry - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds - 812 Ceramics, Refractories and Glass
DOI:10.3969/j.issn.1002-6819.2009.12.027
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 37>
Accession number:20100812731095
Title:Braking ability of vehicle united brake based on permanent magnet type eddy current retarder
Authors:Zhao, Xiaobo (1); Ji, Changying (1); Zhou, Wei (2); Zhao, Guozhu (1); Lu, Zhixiong (1)
Author affiliation:(1) College of Engineering, Nanjing Agricultural University, Nanjing 210032, China; (2) Guangzhou Isuzu Bus Co., Ltd, Guangzhou 510507, China
Corresponding author:Ji, C.
(chyji@njau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:119-123
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to investigate the practical braking ability of united brake system with permanent magnet type eddy current retarder and exhaust brake in vehicle, the advantages and disadvantages of permanent magnet type eddy current retarder and exhaust brake were analyzed, respectively. The experiments and theoretical analysis on the braking ability of united brake with permanent magnet type eddy current retarder and exhaust brake for vehicle were carried out under the conditions of level roads and hillside paths. The results show that the united brake can make the braking distance shortened, the deceleration increased, the braking ability of the vehicle improved on the level road, and the united brake system can meet the demands for vehicle to travel on steeper slope at steady and economic speed. All of above that can provide reference for application of the permanent magnet type eddy current retarder and exhaust brake in vehicle.
Number of references:11
Main heading:Brakes
Controlled terms:Eddy currents - Magnetic devices - Permanent magnets - Roads and streets - Vehicles
Uncontrolled terms:Brake systems - Braking distance - Exhaust brake - In-vehicle - Permanent magnet type eddy current retarder - Steeper slopes - United brake
Classification code:708.4 Magnetic Materials - 704.1 Electric Components - 704 Electric Components and Equipment - 714 Electronic Components and Tubes - 701.1 Electricity: Basic Concepts and Phenomena - 432 Highway Transportation - 406.2 Roads and Streets - 602 Mechanical Drives and Transmissions
DOI:10.3969/j.issn.1002-6819.2009.12.021
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 38>
Accession number:20100812731110
Title:Research and implementation on reactive power optimization intelligent system for 10 kV distribution line
Authors:Piao, Zailin (1); Tan, Dongming (1); Guo, Dan (1)
Author affiliation:(1) College of Information and Electrical Engineering, ShenYang Agricultural University, Shenyang 110161, China
Corresponding author:Piao, Z.
(piaozl@china.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:206-210
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The theoretical study on rural distribution network reactive power optimization and single compensation device was reported in lot of literature, but the study of reactive power optimization intelligent control system for 10 kV lines in the rural power distribution network is still blank. This paper makes reactive power optimization intelligent system come true, which was based on the current status of rural network reactive power compensation, 10 kV distribution lines integrated long-range communications technology and network technology, directly remote monitoring, management and automation in the dispatch room, through the upper and lower digital technology. The system implementation showes that each substation exports power factor always fluctuated between 0.95-0.98, which is essentially a straight line. System implementation explored a new way to achieve intelligent electicity network.
Number of references:14
Main heading:Reactive power
Controlled terms:Distributed parameter networks - Electric network analysis - Electric power factor - Electric substations - Intelligent systems - International trade - Optimization
Uncontrolled terms:10 kV line - Current status - Digital technologies - Digital upper and nether computer - K-V distribution - Long-range communications - Network technologies - Power distribution network - Power factors - Reactive power compensation - Reactive power optimization - Remote monitoring - Rural distribution networks - Rural networks - Straight lines - System implementation - Theoretical study
Classification code:921.5 Optimization Techniques - 911.4 Marketing - 902.3 Legal Aspects - 723.4 Artificial Intelligence - 706.1 Electric Power Systems - 706 Electric Transmission and Distribution - 703.1.1 Electric Network Analysis - 703.1 Electric Networks - 701.1 Electricity: Basic Concepts and Phenomena
DOI:10.3969/j.issn.1002-6819.2009.12.036
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 39>
Accession number:20100812731079
Title:Relationship between spatio-temporal variability of soil moisture and nutrients and crop yield
Authors:Cai, Shouhua (1); Xu, Ying (1); Wang, Junsheng (1); Zhang, Lihua (1); Jing, Guofang (2)
Author affiliation:(1) College of Conservancy and Hydraulic Engineering, Yangzhou University, Yangzhou 225009, China; (2) College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China
Corresponding author:Cai, S.
(caishouhua@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:26-31
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:It is very important for the implementation of precision agriculture to study the relationship between crop yield and spatio-temporal variability of soil moisture and nutrients, which requires improving the methods of studying such relationship to speed up the process of precision agriculture.The relationship between crop yield and spatial variability of soil moisture and nutrients at the seedling stage and grain-filling stage of winter wheat was analyzed with both geostatistics and traditional statistics, and a method to integratedly evaluate soil moisture and nutrient status through integrated indicator rate was proposed. The relationship between integrated indicator rate and crop yield showed integrated indicator rate was significantly correlated with crop yield in the range of 67.8 m, and the greater integrated indicator rate was, the greater yield was. Their kriging maps indicated the distribution of integrated indicator rate was similar to that of yield. Integrated indicator rate could explain 58.4% of yield variation which was 17.4% more than the result of multivariate step regression analysis. Both multivariate step regression analysis of soil moisture and nutrients and crop yield and simple regression analysis of integrated indicator rate and crop yield indicated that soil moisture and nutrients could explain 33.3%-58.4% of yield variation which was 0-5.2% more than only considering soil nutrients, and meanwhile soil moisture and nutrients of both seedling stage and grain-filling stage could explain 41%-58.4% of yield variation, 4.3%-16.5% more than considering soil moisture and nutrients of either seedling stage or grain-filling stage. Integrated indicator rate provides a method for describing spatio-temporal variability of soil moisture and nutrients and their relationships with crop yield. Its kriging map is a useful tool of integratedly evaluating soil moisture and nutrient status, and provides an available reference for implementation of precision agriculture by comparing with the kriging map of yield.
Number of references:18
Main heading:Nutrients
Controlled terms:Crops - Grain (agricultural product) - Groundwater - Metal analysis - Moisture determination - Permittivity - Regression analysis - Soil moisture - Statistics
Uncontrolled terms:Crop yield - Geo-statistics - Grain filling - Integrated indicator rate - Kriging - Nutrient status - Precision Agriculture - Simple regression analysis - Soil nutrients - Spatial variability - Spatiotemporal variability - Speed-ups - Step regression - Winter wheat
Classification code:944.2 Moisture Measurements - 922.2 Mathematical Statistics - 822.3 Food Products - 821.4 Agricultural Products - 821.2 Agricultural Chemicals - 801 Chemistry - 708.1 Dielectric Materials - 701 Electricity and Magnetism - 531 Metallurgy and Metallography - 483.1 Soils and Soil Mechanics - 461.9 Biology - 454.3 Ecology and Ecosystems - 444.2 Groundwater
DOI:10.3969/j.issn.1002-6819.2009.12.005
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 40>
Accession number:20100812731087
Title:Numerical simulation on gravitational erosion of small watershed system in Loess Plateau
Authors:Yu, Guoqiang (1); Li, Zhanbin (1); Li, Peng (1); Zhang, Xia (3); Zhou, Binghua (1); Zhao, Hongbin (4)
Author affiliation:(1) Northwest Key Laboratory of Water Resource and Environment Ecology, Xi'an University of Technology, Xi'an 710048, China; (2) State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China; (3) Research and Design Institute of Environmental Science of Shaanxi Province, Xi'an 710061, China; (4) School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
Corresponding author:Yu, G.
(yuguoqiang23@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:74-79
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To study the mechanism of gravitational erosion, pre-treatment program for modeling of complex multilayered terrain using fish language was compiled and the modeling was developed secondly. The finite difference software Flac<sup>3D</sup> was used to study the mechanism of gravitational erosion, to analyze the development process of gravitational erosion, and to numerical simulate on displacement field and stress field of small watershed in Loess Plateau concerning on the mechanical stabilization. The results showed that the three-dimensional model established could factually demonstrate topography and geomorphology of the small watershed and had good simulation effectiveness. The process of gravitational erosion was divided into three stages, the development stage, maturity stage and stable stage. Gravitational erosion of the traceability area was the most serious; the geometric shape of concave slope conductived to the stability that slowing down the occurrence degree of gravitational erosion. The modeling method and numerical simulation results could be applied to study gravitational erosion that offer scientific basis for the deeply promoting the development of erosion and sediment yield time-space law and comprehensive controlling soil erosion of small watershed and constructing the ecological environment.
Number of references:12
Main heading:Three dimensional
Controlled terms:Geomorphology - Gravitation - Landforms - Slope stability - Stresses - Watersheds
Uncontrolled terms:Development process - Development stages - Displacement field - Ecological environments - Finite difference - Geometric shape - Loess Plateau - Maturity stages - Mechanical stabilization - Modeling - Modeling method - Multi-layered - Numerical simulate - Numerical simulation - Pre-Treatment - Sediment yields - Small watersheds - Software FLAC 3D - Soil erosion - Stress field - Three stages - Three-dimensional model - Time-space
Classification code:902.1 Engineering Graphics - 723.5 Computer Applications - 483.1 Soils and Soil Mechanics - 481.1.1 Geomorphology - 931.5 Gravitation, Relativity and String Theory - 481.1 Geology - 421 Strength of Building Materials; Mechanical Properties - 408.1 Structural Design, General - 406.2 Roads and Streets - 444.1 Surface Water
DOI:10.3969/j.issn.1002-6819.2009.12.013
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 41>
Accession number:20100812731135
Title:Effect of natamycin treatment on physiological metabolism and quality of postharvest sweet cherry
Authors:Jiang, Aili (1); Hu, Wenzhong (1); Li, Hui (1); Tian, Mixia (1); Fan, Shengdi (1)
Author affiliation:(1) Key Laboratory of Biotechnology and Bioresources Utilization, College of Life Science, Dalian Nationalities University, Dalian 116600, China
Corresponding author:Hu, W.
(hwz@dlnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:351-356
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to explore the effects of natamycin combined with V<inf>c</inf> treatment on the physiological metabolism and quality of postharvest sweet cherry and its mechanism, fresh sweet cherries were dipped in 10 mg/L natamycin solution, 100 mg/L V<inf>c</inf> solution, as well as 10 mg/L natamycin + 100 mg/L V<inf>c</inf> solution for 10 min, respectively, and then transferred to 5°C condition for storage. During the period of storage, respiration rate and the activities of some disease resistance-related enzyme such as polyphenol oxidase (PPO), peroxidase (POD), phenylalanine ammonia-lyase (PAL) were measured. Meanwhile, fruit color, firmness, V<inf>c</inf> and phenolic substances content as well as decay rate of quality index were analyzed. The results indicated that natamycin treatments with/without V<inf>c</inf> extended the storage period of up to 10 d or more. In particular, treatment with 10 mg/L natamycin + 100 mg/L V<inf>c</inf> significantly increased PPO, POD, PAL activity and the polyphenol content, reduced fruit respiration rate and decay rate, and maintained a high V<inf>c</inf> content and firmness. The individual natamycin treatment also had a certain role in regulating metabolism and preservation, while the sole V<inf>c</inf> treatment had no obvious effects on disease control. These data suggest that natamycin combined with V<inf>c</inf> treatment may be used as natural preservatives in the practical application of sweet cherry storage and transportation.
Number of references:17
Main heading:Quality control
Controlled terms:Amino acids - Customer satisfaction - Decay (organic) - Disease control - Food preservation - Metabolism - Phenols - Physiology - Quality assurance - Total quality management
Uncontrolled terms:Decay rate - Disease resistance - Fruit color - Natamycin - Natural preservatives - Phenylalanine ammonia-lyase - Polyphenol content - Polyphenol oxidase - Postharvest - Quality indices - Respiration rate - Storage periods - Sweet cherries
Classification code:922.2 Mathematical Statistics - 913.3 Quality Assurance and Control - 912.2 Management - 912 Industrial Engineering and Management - 822.2 Food Processing Operations - 811.2 Wood and Wood Products - 804.1 Organic Compounds - 802.2 Chemical Reactions - 801.2 Biochemistry - 461.9 Biology - 461.7 Health Care - 461.6 Medicine and Pharmacology - 461 Bioengineering and Biology
DOI:10.3969/j.issn.1002-6819.2009.12.061
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 42>
Accession number:20100812731092
Title:Performance test on corn thresher with different-speed threshing parts
Authors:Li, Xinping (1); Gao, Lianxing (2)
Author affiliation:(1) College of Vehicle and Motive Power Engineering, Henan University of Science and Technology, Luoyang 471003, China; (2) College of Engineering, Shenyang Agricultural University, Shenyang 110161, China
Corresponding author:Gao, L.
(lianxinggao@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:102-106
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to optimize parameters of threshing system of corn thresher with different speeds threshing parts, and minimize mechanical damage of corn seeds in the course of threshing, an experiment of second order regression orthogonal rotation design was carried out with rotating speed of straight roller, feeding quantity and kernel water contents as influence factors and broken rate of kernel as major criterion. The results of testing showed that relation of water content and kernel broken rate was quadratic function, and the broken rate of kernel was increased with the increasing or reducing of the water contents. The broken rate of kernel was increased with the increasing of feeding quantity. When the feeding quantity was less than 0.9 kg/s, the broken rate of kernel was stable and unaffected by the feeding quantity; the broken rate of kernel was also increased with the increasing of the rotating speed of straight roller. There was significantly interactive effect for broken rate of kernel among the three influence factors. The value of kernel broken rate reached minimum with kernel water contents 18%, feeding quantity 0.9 kg/s and the rotating speed of straight roller 200 r/min. This research has important meanings for future research on mechanism of seed corn thresher and parameters optimization of threshing system, and it also is useful for developing threshing technology with low damage.
Number of references:16
Main heading:Water content
Controlled terms:Agriculture - Curricula - Experiments - Feeding - Optimization - Rollers (machine components) - Rotating machinery - Rotation - Seed - Speed
Uncontrolled terms:Broken rate - Corn seeds - Different speed - Influence factors - Interactive effect - Low damages - Mechanical damages - Parameters optimization - Performance tests - Quadratic function - Rotating speed - Second orders
Classification code:921.5 Optimization Techniques - 901.3 Engineering Research - 901.2 Education - 821.4 Agricultural Products - 931.1 Mechanics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 601.2 Machine Components - 601.1 Mechanical Devices - 444 Water Resources - 691.2 Materials Handling Methods
DOI:10.3969/j.issn.1002-6819.2009.12.018
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 43>
Accession number:20100812731088
Title:Establishment of conceptual soil erosion model and application in purple soil watershed
Authors:Wang, Ping (1); Zhu, Axing (2); Cai, Qiangguo (3); Liu, Huiping (1)
Author affiliation:(1) School of Geography, Being Normal University, Beijing 100875, China; (2) State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; (3) Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; (4) Department of Geography, University of Wisconsin-Madison, Madison, WI 53706, United States
Corresponding author:Wang, P.
(wangp@lreis.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:80-87
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Conceptual soil erosion model can depict basic watershed processes yet does not require intensive data. Erosion-related parameters in the current conceptual erosion models are determined either by calibration based on long series of sediment data at watershed outlets or by referring to the related empirical parameter values. This paper presented a conceptual soil erosion model which did not need long series of sediment records at watershed outlets to calibrate parameters. The model incorporated a conceptual soil erosion module, which was based on the empirical relationship between the discharge and sediment yield observed from experimental plots, into a physically-based distributed hydrology model, WetSpa Extension. The model had been tested in three watersheds in the purple soil region in China. The results of simulated discharge and sediment at outlets as well as spatial distribution of erosion rates were satisfactory. The model was also proved to be applicable in similar watersheds nearby and useful in assessing the effect of soil and water conservation practices. This conceptual model provides a new option for areas with sparse sediment data series at watershed outlets, and it has a great potential in assisting watershed management.
Number of references:16
Main heading:Geologic models
Controlled terms:Landforms - Sedimentology - Size distribution - Soil conservation - Soil mechanics - Soils - Water - Water conservation - Water management - Watersheds
Uncontrolled terms:Conceptual model - Data series - Empirical parameters - Erosion models - Erosion rates - Hydrology models - New options - Sediment yields - Simulated discharges - Soil and water conservation - Soil erosion - Soil-erosion model - Soil-soil - Spatial distribution - Watershed management - Watershed process
Classification code:933.1 Crystalline Solids - 931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 821.3 Agricultural Methods - 804.2 Inorganic Compounds - 531.2 Metallography - 483.1 Soils and Soil Mechanics - 481.1 Geology - 446 Waterworks - 444.1 Surface Water - 444 Water Resources - 423 Non Mechanical Properties and Tests of Building Materials - 403.1 Urban Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.014
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 44>
Accession number:20100812731107
Title:Leaf area index retrieval of winter wheat using artificial neural network
Authors:Ma, Yinchi (1); Yan, Guangjian (1); Ding, Wen (2); Wang, Yuezhi (2)
Author affiliation:(1) State Key Laboratory of Remote Sensing Science, Beijing Normal University, Beijing 100875, China; (2) Fisheries Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100068, China
Corresponding author:Yan, G.
(gjyan@bnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:187-192
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In practices, measuring leaf area index (LAI) in large area scale is very difficult. Therefore, retrieving LAI quantitatively based on remote sensing technology is concerned by many researchers. We proposed a BP-ANN based method to retrieve winter wheat LAI using surface reflectance data of MODIS. The MODIS pixel is assumed to be composed by crop canopy and bare soil. The SAILH (Light Scattering by Arbitrarily Inclined Leaves including the Hotspot-effect) model was used to simulate the directional reflectance of crop canopy, and the bare soil was assumed to be Lambertian. Series LAI maps of winter wheat in Shunyi District, Beijing were retrieved using this method during April in 2001. The research indicated that this method can be used well to retrieve LAI in large area scale, which is valuable to monitor crop growth.
Number of references:20
Main heading:Neural networks
Controlled terms:Crops - Forestry - Geologic models - Monitoring - Radiometers - Reflection - Remote sensing - Soils - Spectrometers
Uncontrolled terms:Artificial Neural Network - Bare soils - Crop canopy - Crop growth - Data monitoring - Hot spot - Lambertian - Leaf area index - MODIS data - Remote sensing technology - Shunyi District - Surface reflectance - Winter wheat
Classification code:821.4 Agricultural Products - 941 Acoustical and Optical Measuring Instruments - 941.3 Optical Instruments - 821.0 Woodlands and Forestry - 942 Electric and Electronic Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 944.7 Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 801 Chemistry - 481.1 Geology - 483.1 Soils and Soil Mechanics - 711 Electromagnetic Waves - 461.1 Biomedical Engineering - 723.4 Artificial Intelligence - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 731.1 Control Systems
DOI:10.3969/j.issn.1002-6819.2009.12.033
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 45>
Accession number:20100812731115
Title:Process parameters of biodiesel production through alkaline catalyzed transesterification of rapeseed oil
Authors:Huang, Caixia (1); Liu, Ronghou (1)
Author affiliation:(1) Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (2) Environment and Plant Protection College, South China University of Tropical Agriculture, Danzhou 571737, China
Corresponding author:Liu, R.
(liurhou@sjtu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:234-249
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Biodiesel production by transesterification process employing alkaline catalyst has been paid to a lot of attention due to its high conversion rate. In this work, sodium hydroxide (NaOH) catalyzed transesterification of rapeseed oil with methanol was carried out in a bench scale experimental reactor. The effects of molar ratio of methanol to rapeseed oil (4:1-8:1), catalyst concentration (0.5%-2%), reaction temperature (30-70°C) and reaction time (30- 150 min) on the conversion rate of transesterification were investigated. Composition of biodiesel was determined by using GC/MS analysis. Results showed that the suitable parameters for reactions were as follows: temperature 50-60°C, molar ratio of methanol to rapeseed oil 6:1, NaOH concentration 1% and reaction time 60 min with highest conversion rate of transesterification 96.7%. In addition, it was found that biodiesel was mainly consisted of 9-octadecenoic acid (z)-, methyl esters, 13-docosenoic acid (z)-, methyl esters, 9, 12-octadecadienioc acid, methyl esters, 11-eicosenoic acid, methyl esters and 9, 12, 15-octadecatrienoic acid, methyl esters. Among which, the relative content of 9-octadecenoic acid (z)-, methyl esters was the highest one, reaching 50.30%.
Number of references:23
Main heading:Biodiesel
Controlled terms:Acids - Catalysis - Catalysts - Chemical analysis - Conversion efficiency - Esterification - Esters - Experimental reactors - Methanol - Oleic acid - Sodium - Transesterification - Vegetable oils
Uncontrolled terms:Alkaline catalysts - Biodiesel production - Catalyst concentration - Conversion rates - GC/MS - GC/MS analysis - Methyl esters - Molar ratio - NaOH concentration - Process parameters - Rapeseed oil - Reaction temperature - Reaction time - Sodium hydroxides
Classification code:804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 822.3 Food Products - 801 Chemistry - 549.1 Alkali Metals - 525.5 Energy Conversion Issues - 523 Liquid Fuels - 621 Nuclear Reactors
DOI:10.3969/j.issn.1002-6819.2009.12.041
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 46>
Accession number:20100812731085
Title:Effect of wastewater irrigation on soil hydrological properties in reed marsh
Authors:Xia, Jiangbao (1); Liu, Qing (1); Xie, Wenjun (1); Sun, Jingkuan (1); Liu, Qing (1); Lu, Zhaohua (1)
Author affiliation:(1) Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou, Shandong 256603, China; (2) Institute of Restoration Ecology, China University of Mining and Technology, Beijing 100083, China
Corresponding author:Lu, Z.
(lu-zhh@263.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:63-68
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To study the effect of papermaking wastewater irrigation on soil hydrological properties in saline reed field, different wastewater irrigation frequencies were employed in the saline reed field of Yellow River Delta. Soil infiltration course and hydrological properties were determined in field and laboratory. After wastewater irrigation, the change of the soil pH value, soil salt content and soil hydrologic-physical properties were observed. The results were showed that: 1) After wastewater irrigation, the mean reduction of soil pH value was 6.0%. In 1 irrigation time and 2 irrigation times treatments, soil salt content decreased by 11.7%, and soil salt content increased by 12.6% in 3-4 irrigation times treatments. 2) After irrigation, the mean reduction of soil bulk density was 6.5%, and the mean increment of soil total porosity was 18.1%. With the irrigation frequency increasing, soil density was decreased and soil total porosity was increased. 3) Soil infiltration course of reed field irrigated by wastewater fitted Horton infiltration model well. After wastewater irrigation, the first infiltration rate decreased, but the stable infiltration rate promoted with the wastewater irrigation frequency increasing. 4) Soil water-holding capacity was increased by wastewater irrigation. The maximum water-holding capacity in capillary was 90.15 mm in the treatment of irrigation 3 irrigations, and the maximum water-holding capacity in non-capillary was 4.15 mm in treatment of 4 irrigations. The papermaking wastewater irrigation had obvious benefits to reduce soil salinity, improve soil hydrologic-physical properties and enhance soil infiltration and water-holding capacity. However, there was the significant different in soil properties between treatments. These results provide the scientific basis for determining suitable irrigation frequency and the irrigation volume of papermaking wastewater in saline reed field of Yellow River Delta, which is of great significance to the exploitation and utilization of papermaking wastewater resources.
Number of references:17
Main heading:Geologic models
Controlled terms:Biochemical oxygen demand - Irrigation - Papermaking - pH effects - Physical properties - Rivers - Seepage - Soil mechanics - Soil moisture - Underwater soils - Wastewater - Water recycling - Water resources
Uncontrolled terms:Hydrologic-physical properties - Hydrological properties - In-field - Infiltration models - Infiltration rate - Irrigation frequency - Papermaking wastewater - Reeds - Soil bulk density - Soil density - Soil hydrological properties - Soil infiltration - Soil pH - Soil property - Soil salinity - Soil salt content - Soil water - Total porosity - Wastewater irrigation - Water holding capacity - Yellow River delta
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 453 Water Pollution - 453.2 Water Pollution Control - 471.1 Oceanography, General - 481.1 Geology - 483.1 Soils and Soil Mechanics - 801.1 Chemistry, General - 811.1.1 Papermaking Processes - 821.3 Agricultural Methods - 452.4 Industrial Wastes Treatment and Disposal - 407 Maritime and Port Structures; Rivers and Other Waterways - 407.2 Waterways - 441 Dams and Reservoirs; Hydro Development - 452.3 Industrial Wastes - 444 Water Resources - 445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 444.1 Surface Water
DOI:10.3969/j.issn.1002-6819.2009.12.011
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 47>
Accession number:20100812731131
Title:Technology for producing protein feed from corn stover by multi-strain distributional degradation
Authors:Chen, He (1); Yu, Jianjun (1); Shu, Guowei (1); Zhang, Qiang (1)
Author affiliation:(1) College of Life Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
Corresponding author:Yu, J.
(79662980@qq.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:331-334
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The technology of producing protein feed from distributional degradation of corn stalk by multi-strain was studied. Most of lignin was degraded through solid fermentation by Phanerochaete chrysosporium. Then Trichoderma viride was vaccinatated for further degradation of lignocellulose. Protein feed was produced by adding Candida utilis. The results manifested that the optimal technical conditions were as follows: Trichoderma viride inoculation time was the10th day; fermention time was 12 days; After the bran was added into stalk by the ratio of 1:3.0, the best technical conditions were yeast inoculation 8%; mixture ratio of solid to liquid 1:3.0; addition volume of ammonium sulfate 2.5%, continuous fermentation time 72 h. Under the optimal conditions, the content of crude protein was up to 25.3%. The results show that distributional degradation technology of producing protein feed by multi-strain provides a new method for utilization of corn stalk.
Number of references:15
Main heading:Proteins
Controlled terms:Ammonium compounds - Degradation - Fermentation - Lignin
Uncontrolled terms:Ammonium Sulfate - Candida utilis - Continuous fermentation - Corn - Corn stalk - Corn stover - Crude proteins - Mixture ratio - Multi-strain - Optimal conditions - Phanerochaete chrysosporium - Technical conditions - Trichoderma viride
Classification code:811.3 Cellulose, Lignin and Derivatives - 805.1.1 Biochemical Engineering - 804.2 Inorganic Compounds - 815.1.1 Organic Polymers - 804.1 Organic Compounds - 801.2 Biochemistry - 461.8 Biotechnology - 802.2 Chemical Reactions
DOI:10.3969/j.issn.1002-6819.2009.12.057
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 48>
Accession number:20100812731136
Title:Comparison of fresh-keeping effects of Portunus trituberculatus by different package methods
Authors:Zheng, Dan (1); Duan, Qingyuan (2); Zhu, Lihua (1); Zhong, Huiying (1); Yang, Jiafeng (1); Wang, Jie (1)
Author affiliation:(1) Ningbo Inspection and Monitor Centre for Fishery Environment and Product Quality, Ningbo 315012, China; (2) Ningbo Academy of Ocean and Fishery, Ningbo 315012, China
Corresponding author:Duan, Q.
(duanqynb@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:357-360
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Portunus trituberculatus is a famous aquatic variety in Ningbo city and melanin is often found in storage period. It is a big problem to prohibit melanin phenomenon and prolong storage period of Portunus trituberculatus. The study was made by three package methods: vacuum package, coating package and modified atmosphere package(MAP). The fresh-keeping effects of Portunus Trituberculatus were investigated. The results showed the efects were better when air components and ratios of MAP were CO<inf>2</inf> 50% N<inf>2</inf> 50%. Compared with coating package and MAP, vacuum packing could inhibit the production of melanin in Portunus Trituberculatus gills and legs and prolong storage period effectively at 0-4°C.
Number of references:16
Main heading:Packaging
Controlled terms:Coatings - Experiments - Vacuum
Uncontrolled terms:Air components - Fresh-keeping effect - Modified atmosphere package - Storage periods - Vacuum package
Classification code:539 Metals Corrosion and Protection; Metal Plating - 633 Vacuum Technology - 694.1 Packaging - 813.2 Coating Materials - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2009.12.062
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 49>
Accession number:20100812731105
Title:Nutrition information extraction of rape canopy based on computer-vision technology
Authors:Yuan, Daojun (1); Liu, Anguo (1); Yuan, Baozhong (1); Hu, Liyong (1); Liu, Zhixiong (1); Zhang, Fangfang (1)
Author affiliation:(1) College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (2) School of Environment Technology, Zhejiang Forestry University, Hangzhou 311300, China
Corresponding author:Liu, A.
(agl@mail.hzau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:174-179
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to study the possibility of monitoring the rape canopy' nutrition information based on computer-vision technology in the outdoor ray, the computer-vision system was designed, and the images of the rape canopy were got and segmented. Through the statistical analysis of stepwise regression, the perfect models of chlorophyll content, total-N content, and C/N ratio were found and have a good predictive ability. The result showed that it is possible to estimate the physiological indexes of rape canopy, including chlorophyll content, total-N content, and C/N ratio, with digital camera under the conditions of field natural light.
Number of references:28
Main heading:Computer vision
Controlled terms:Cameras - Chlorophyll - Digital image storage - Image segmentation - Imaging systems - Nutrition - Porphyrins
Uncontrolled terms:C/N ratio - Chlorophyll contents - Computer vision system - Information Extraction - N content - Natural light - PERFECT model - Physiological indices - Predictive abilities - Statistical analysis - Stepwise regression
Classification code:741.2 Vision - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 746 Imaging Techniques - 801.2 Biochemistry - 804.1 Organic Compounds - 822.3 Food Products - 741.1 Light/Optics - 461.7 Health Care - 722.1 Data Storage, Equipment and Techniques - 722.4 Digital Computers and Systems - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 731.6 Robot Applications - 741 Light, Optics and Optical Devices
DOI:10.3969/j.issn.1002-6819.2009.12.031
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 50>
Accession number:20100812731128
Title:Process optimization of electron beam radiation on chilled pork
Authors:Bai, Yanhong (1); Zhao, Dianbo (1); Mao, Duobin (1); Jia, Chunxiao (2); Qian, Xuemei (3); Yang, Gongming (1)
Author affiliation:(1) Food Engineering and Biotechnology College, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (2) Material and Chemical Engineering College, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (3) The Ningbo Branch of Ordnance Science Institute of China, Ningbo 315103, China; (4) College of Food Science, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Yang, G.
(ygm@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:312-317
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Effects of electron beam radiation on sterilization and color of chilled pork(14-15 cm in length, 7-8 cm in breadth, 2-2.5 cm in height) were studied by using response surface analysis through taking electron beam energy and dose as factors, colony form unit, value of redness, and value of lightness as responses. The results were as follows: There was an interaction between electron beam energy and dose, but electron beam energy played a leading role in sterilization. When dose ranged from 3.09 to 3.63 kGy and electron beam energy ranged from 2.37 to 3.51 MeV, the colony form unit would drop 2 logarithm units. The value of redness was minimum value when dose was 2.38 kGy and electron beam energy was 2.64 MeV. The value of redness was close to the control when the dose ranged from 2.24 to 2.99 kGy and the electron beam energy ranged from 2.28 to 2.91 MeV. The value of lightness was maximum and closed to the control as dose was 2.67 kGy and electron beam energy was 2.55 MeV. The value of lightness would become more acceptable when the dose ranged from 2.05 to 2.92 kGy and electron beam energy ranged from 2.09 to 2.8 MeV. The results showed that the optimal parameters of electron beam radiation on chilled pork were 2.8 MeV and 3.09 kGy. This study would provide the technical basis for application of electron beam radiation on pork industry.
Number of references:18
Main heading:Electron beams
Controlled terms:Algebra - Color - Electron beam lithography - Electron optics - Electrons - Meats - Optimization - Radiation effects - Sterilization (cleaning) - Surface analysis
Uncontrolled terms:Chilled pork - Electron beam energy - Electron beam radiation - Minimum value - Optimal parameter - Pork industry - Process optimization - Radiation sterilization - Response surface analysis
Classification code:951 Materials Science - 802.3 Chemical Operations - 822.2 Food Processing Operations - 822.3 Food Products - 921.1 Algebra - 921.5 Optimization Techniques - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 745.1 Printing - 423 Non Mechanical Properties and Tests of Building Materials - 462.1 Biomedical Equipment, General - 622.2 Radiation Effects - 744 Lasers - 701.1 Electricity: Basic Concepts and Phenomena - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 711 Electromagnetic Waves
DOI:10.3969/j.issn.1002-6819.2009.12.054
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 51>
Accession number:20100812731108
Title:Prediction of slope infiltration based on artificial neural networks by free search
Authors:Li, Xinhu (1); Zhang, Zhanyu (1); Yang, Jie (2); Zhang, Guohua (3); Wang, Bin (4); Wang, Chao (1)
Author affiliation:(1) College of Water Conservancy and Hydropower Engineering, Hehai University, Nanjing 210098, China; (2) Soil and Water Conservation Research Institute of Jiangxi Province, Nanchang 330000, China; (3) China Irrigation and Drainage Development Center, Beijing 100054, China; (4) College of Water Conservancy and Building Engineering, Northeast Agricultural University, Harbin 150030, China
Corresponding author:Li, X.
(lixinhu721@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:193-197
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Attempts of using FSBP were made to predict infiltration of natural rainfall on the slop surface of red soil under different land use patterns. Seven indexes such as precipitation, maximum rainfall intensity, rainfall duration, initial soil water content, soil bulk density, soil porosity and underlaying surface were selected as input variable, and the amount of infiltration as output variable. Results show that the mean relative error of the prediction is 11.08%, and t test and regression analysis indicates that the predicted value differs just slightly from the observed value and their correlation coefficient was 0.9715. The model is quite high in accuracy and stability, and serves as useful tool in further research on prediction of infiltration of nature rainfall on slopes.
Number of references:15
Main heading:Neural networks
Controlled terms:Backpropagation - Land use - Rain - Regression analysis - Seepage - Soil mechanics - Soil moisture - Statistical tests - Underwater soils - Water content
Uncontrolled terms:Artificial Neural Network - Artificial neural networks - Correlation coefficient - Free Search - Input variables - Land use pattern - Mean relative error - Output variables - Rainfall duration - Rainfall intensity - Red soils - Soil bulk density - Soil Porosity - Soil water content - T-tests - Underlaying surface
Classification code:922.2 Mathematical Statistics - 723.4 Artificial Intelligence - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 461.1 Biomedical Engineering - 444 Water Resources - 443.3 Precipitation - 442.2 Land Reclamation - 441 Dams and Reservoirs; Hydro Development - 407 Maritime and Port Structures; Rivers and Other Waterways - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.034
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 52>
Accession number:20100812731127
Title:Analysis of rocky desertification landscape pattern change in Karst plateau area based on GIS
Authors:Zhang, Panpan (1); Hu, Yuanman (1); Li, Xiuzhen (1); Xiao, Duning (1); Yin, Jie (1); Li, Yangbing (3)
Author affiliation:(1) Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; (2) Graduate University, Chinese Academy of Sciences, Beijing 100049, China; (3) School of Geography and Biology, Guizhou Normal University, Guiyang 550001, China
Corresponding author:Hu, Y.
(huym@iae.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:306-311
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:As one of the most serious geo-ecological disasters in Karst areas in Southwestern China, rocky desertification has become one of the key and difficult research issues. Taking the Houzhaihe Valley in Puding County, Guizhou Province, Southwestern China as an example, the landscape pattern changes of Karst rocky desertification in the recent 18 years in Karst plateau area were studied from the perspective of different rocky desertification levels, based on 3 series of remote sensing images (TM images of 1987 and 1995 and SPOT-5 image of 2004), and applying GIS technique and statistics analysis methods. Results indicated that, as a whole landscape, the intensity and rate of rocky desertification land were increasing in the recent 18 years. The increasing rate of rocky desertification were 6.55 hm<sup>2</sup>/a from 1987 to 1995, and 29.64 hm<sup>2</sup>/a from 1995 to 2004. Different rocky desertification levels had shown different change tendencies. The area of light rocky desertification land reduced at first (from 1987 to 1995) and then increased (from 1995 to 2004), while the area of moderate and severe rocky desertification land increased continuously from 1987 to 2004.
Number of references:17
Main heading:Weathering
Controlled terms:Climatology - Geographic information systems - Image reconstruction - Information systems - Land use - Landforms - Remote sensing
Uncontrolled terms:Area-based - Guizhou Province - Karst areas - Landscape pattern change - Landscape pattern changes - Remote sensing images - Research issues - Statistics analysis - TM image
Classification code:903.2 Information Dissemination - 802.2 Chemical Reactions - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 723.3 Database Systems - 903.3 Information Retrieval and Use - 723.2 Data Processing and Image Processing - 443 Meteorology - 442.2 Land Reclamation - 421 Strength of Building Materials; Mechanical Properties - 403 Urban and Regional Planning and Development - 481.1 Geology
DOI:10.3969/j.issn.1002-6819.2009.12.053
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 53>
Accession number:20100812731123
Title:Effect of drought process on natural production function of cultivated land
Authors:Zhao, Yuanyuan (1); He, Chunyang (1); Yao, Hui (3); Huang, Qingxu (1); Yang, Yang (1)
Author affiliation:(1) State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China; (2) College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China; (3) Shandong Province Heze Construction Bureau, Heze 274000, China
Corresponding author:He, C.
(hcy@bnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:278-284
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Assessing the effect of drought process on the production function objectively is helpful to cultivated land conservation. The effect of drought on production function of cultivated land in Beijing was evaluated. Firstly, the drought conditions were characterized by the surface wetting index (SWI), and the typical drought periods were identified using Mann-Kendall testing method. Then natural potential productivity of non-changed cultivated land was calculated with meteorological data using Thornthwaite Memorial model. Finally, the effect of drought on natural potential productivity of cultivated land was analyzed. Main conclusions were as follows: From 1951 to 2006, the SWI decreased with some fluctuation. The drought was significant during the periods of 1979-1984 and 1998-2006. Annual mean potential productivity was 1043 g/(m<sup>2</sup>·a) in 1979, 912 g/(m<sup>2</sup>·a) in 1984, 1 085 g/(m<sup>2</sup>·a) in 1998, and 872 g/(m<sup>2</sup>·a) in 2006. The natural potential productivity in Tongzhou County was bigger than those in other counties, but that in Yanqing County was the smallest. The drought had great impacts on natural potential productivity. The total potential productivity loss exceeded 10% during the period of 1979-1984, and accounted for nearly 20% during the period of 1998-2006. Therefore, the government should simultaneously take into account the quantity and distribution of the cultivated land, and the impacts of climatic fluctuation especially the drought on the production function in the cultivated land management.
Number of references:37
Main heading:Drought
Controlled terms:Conservation - Land use - Productivity - Surface testing - Wetting
Uncontrolled terms:Annual mean - Climatic fluctuations - Cultivated lands - Drought conditions - Drought periods - Mann-Kendall - Meteorological data - Natural potential - Potential productivity - Production function - Productivity surfaces - Surface wetting - Testing method
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 913.1 Production Engineering - 802.3 Chemical Operations - 454 Environmental Engineering - 444 Water Resources - 443.3 Precipitation - 442.2 Land Reclamation - 423.2 Test Methods - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.049
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 54>
Accession number:20100812731114
Title:Effect of metal elements on sawdust fast-pyrolysis
Authors:Niu, Yanqing (1); Wang, Xuebin (1); Tan, Houzhang (1); Xu, Tongmo (1); Hui, Shien (1); Zhao, Qinxin (1); Zhou, Qulan (1)
Author affiliation:(1) State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Corresponding author:Niu, Y.
(yqniu001@yahoo.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:228-233
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Influence of metal elements such as Al/Ca/Fe/K/Na/Zn on the pyrolysis rate and production of CO and CH<inf>4</inf> was investigated using Fourier Transform Infrared Analyzer (FTIR) in the process of sawdust fast-pyrolysis in an entrained flow reactor. The results show that the addition of metal elements inhibits the production of CO/CH<inf>4</inf>, and the inhibiting ability order is Fe<inf>2</inf>O<inf>3</inf>>ZnO>NaCl> CaO>KCl>Al<inf>2</inf>O<inf>3</inf>. The addition of Al<inf>2</inf>O<inf>3</inf>/Fe<inf>2</inf>O<inf></inf>/ZnO shortens the escaping time of CO and CH<inf>4</inf>, especially for Fe<inf>2</inf>O<inf>3</inf>. The statistical analysis suggests that the addition of metal elements generally decreases the reaction rate in the process of biomass fast-pyrolysis, and the reaction rate order is no-addition>Al<inf>2</inf>O<inf>3</inf>> Fe<inf>2</inf>O<inf>3</inf>>ZnO>KCl>CaO>NaCl.
Number of references:15
Main heading:Fourier transforms
Controlled terms:Aluminum - Biomass - Carbon monoxide - Fourier transform infrared spectroscopy - Metals - Methane - Pyrolysis - Reaction rates - Sodium chloride - Thermogravimetric analysis - Zinc oxide
Uncontrolled terms:Addition of Al - CO and CH - Entrained Flow Reactor - Fourier transform infrared - FTIR - Metal elements - Methane pyrolysis - Pyrolysis rate - Statistical analysis - ZnO
Classification code:804.1 Organic Compounds - 804.2 Inorganic Compounds - 805.1.1 Biochemical Engineering - 821.5 Agricultural Wastes - 921.3 Mathematical Transformations - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 931.1 Mechanics - 802.2 Chemical Reactions - 482.2 Minerals - 522 Gas Fuels - 525.1 Energy Resources and Renewable Energy Issues - 531 Metallurgy and Metallography - 541.1 Aluminum - 801 Chemistry - 801.4 Physical Chemistry
DOI:10.3969/j.issn.1002-6819.2009.12.040
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 55>
Accession number:20100812731080
Title:Applicability of FAO56 and ASCE Penman-Monteith equations for reference crop evapotranspiration calculation on turf grass
Authors:Xu, Junzeng (1); Peng, Shizhang (1); Zhang, Xingnan (1); Ding, Jiali (2); Wang, Weiguang (1)
Author affiliation:(1) State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; (2) Bureau of Water Conservancy, Nantong 226006, China
Corresponding author:Peng, S.
(szpeng@hhu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:32-37
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reveal the difference between hourly reference crop evapotranspiration(ET<inf>0</inf>) calculated by FAO56 Penman- Monteith equation and that by ASCE Penman-Monteith , as well as the 24-hour accumulated daily ET<inf>0</inf>, well watered lysimeter experiment were carried out on turf grass. Hourly ET<inf>0</inf> and 24-hour accumulated daily ET<inf>0</inf> were calculated based on hourly meteorological data and evaluated by using daily observed grass evapotranspiration derived from well watered lysimeter experiment. There was a certain difference between ET<inf>0</inf> calculated by FAO56 Penman-Monteith equation and that by ASCE Penman-Monteith equation, and the difference was more significant when the ET<inf>0</inf> values were relative higher. Hourly ET<inf>0</inf> were tested to be lower for FAO56 Penman-Monteith equation than for ASCE Penman-Monteith equation in daytime, but just reversed at night. That was ascribed to the difference in Cd values. It was a pity to say that the equation mended by ASCE could not result in improvement in hourly ET<inf>0</inf> calculation, when the 24-hour accumulated daily ET<inf>0</inf> were compared with observed daily grass evapotranspiration. Daily ET<inf>0</inf> calculated by Penman-Monteith equation based on meteorological data at daily time step were test to be the most consistent with that by lysimeter observed. Further evaluation of either FAO56 Penman-Monteith equation or ASCE Penman-Monteith equation was urgent in China, based on hourly or long series daily observed grass evapotranspiration.
Number of references:22
Main heading:Water supply
Controlled terms:Crops - Evapotranspiration - Lysimeters - Soil surveys
Uncontrolled terms:Asce penman-monteith equations - Crop evapotranspiration - Lysimeter experiments - Meteorological data - Penman-Monteith - Penman-Monteith equations - Time step - Turf grass - Turf-grasses
Classification code:821.4 Agricultural Products - 802.3 Chemical Operations - 631.1 Fluid Flow, General - 943.3 Special Purpose Instruments - 483.1 Soils and Soil Mechanics - 444.1 Surface Water - 406.2 Roads and Streets - 446.1 Water Supply Systems
DOI:10.3969/j.issn.1002-6819.2009.12.006
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 56>
Accession number:20100812731129
Title:Effect of plasma on omethoate residue degradation in apple and Chinese cabbage
Authors:Wang, Shiqing (1); Meng, Juan (1); Zhang, Yan (1); Shi, Lei (1); Pu, Chuanfen (1); Shao, Huanxia (1)
Author affiliation:(1) Food Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, China; (2) Qingdao Key Laboratory of Modern Agricultural Quality and Safety Engineering, Qingdao 266109, China
Corresponding author:Wang, S.
(wangshiqing@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:318-323
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To obtain a new method of pesticide residue degradation in fruits and vegetables, the effect and influence factors of omethoate residue degradation Chinese cabbage and apple were studied by using plasma. The results showed that plasma had an excellent effect on omethoate residue-degraded in Chinese cabbage and apple. The omethoate could be degraded by over 95% within 1.5 minutes. Besides, the effect of plasma on omethoate residue degradation in Chinese cabbage was superior to that in apple. As color difference and Vc quantity in samples processed by plasma were the same as in control group, it was concluded that omethoate residue by using plasma had no passive effect on the characters of fruits and vegetables.
Number of references:16
Main heading:Plasmas
Controlled terms:Degradation - Fruits - Pesticide effects - Vegetables
Uncontrolled terms:Apple - Chinese cabbage - Color difference - In-control - Influence factors - Pesticide residue
Classification code:932.3 Plasma Physics - 821.4 Agricultural Products - 821.2 Agricultural Chemicals - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 454.2 Environmental Impact and Protection - 453.1 Water Pollution Sources
DOI:10.3969/j.issn.1002-6819.2009.12.055
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 57>
Accession number:20100812731106
Title:Reflective spectral characteristics of apple florescence canopy
Authors:Zhu, Xicun (1); Zhao, Gengxing (1); Lei, Tong (1)
Author affiliation:(1) College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China; (2) Key Laboratory of Agricultural Ecology and Environment, Shandong Agricultural University, Tai'an 271018, China
Corresponding author:Zhao, G.
(zhaogx@sdau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:180-186
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The apple florescence is a key stage for apple production and management, and the study of apple canopy reflective spectral is of important theoretical and practical significance. Qixia City, Shandong Province was selected as the study area, and reflective spectral data of 120 apple florescence canopies were obtained. Based on the effects of different sample numbers on reflective spectral, the reflective spectral characteristics of apple florescence canopies with and without flowers, with different amount of flowers, at different florescence stages, and with different ages and species of apple trees were systematically studied by using variance and correlation analysis methods. The results indicated that with the increase of cumulative sample numbers, the reflective spectral curves of apple florescence canopies became stable and smooth. In the wave bands of 431-500, 591-680 and 761-1300 nm, the variance analysis results of canopies with and without flowers were very significant (α=0.01). Results showed that the correlations of canopies with different amount of flowers with reflectances in 391-513, 598-687 and 711-1193 nm wave bands were significant (p&le0.05). Reflectance increased at the 670 nm Red Valley and decreased in the near-infrared band of 761-1300 nm with the increase of flower amount. Reflective spectral characteristics among different apple species of Red Fuji, Jinshuai and New Red Star were hard to be distinguished except that for Gala. These results revealed the tremendous potential of capturing information of apple florescence with hyperspectral measurement, and it provided the references for constructing retrieval models of remote sensing.
Number of references:14
Main heading:Fruits
Controlled terms:Correlation methods - Interferometry - Reflection - Remote sensing - Spectrum analysis - Spectrum analyzers
Uncontrolled terms:Apple florescence - Apple production - Apple trees - Canopy model - Correlation analysis - HyperSpectral - Near-infrared bands - Retrieval models - Sample number - Shandong province - Spectral characteristics - Spectral curves - Spectral data - Study areas - Variance analysis - Wavebands
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.4 Optical Variables Measurements - 941 Acoustical and Optical Measuring Instruments - 922.2 Mathematical Statistics - 921 Mathematics - 821.4 Agricultural Products - 741.1 Light/Optics - 731.1 Control Systems - 711 Electromagnetic Waves
DOI:10.3969/j.issn.1002-6819.2009.12.032
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 58>
Accession number:20100812731118
Title:Effect of vermiculite and chicken manure addition on plug seedling production with corn stalk substrate
Authors:Shao, Xiuli (1); Wang, Jiqing (1); He, Bing (1); Ge, Weiwei (1)
Author affiliation:(1) College of Horticulture, Henan Agricultural University, Zhengzhou 450002, China
Corresponding author:Wang, J.
(wjq16@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:250-253
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Corn stalk is a kind of newly substrate that can replace peat. It is important to study the application technique for horticultural crops cultivation and seedling production. The effect of the volumetric ratio of vermiculite to corn stalk substrate, the adding quantity of chicken manure and the relative moisture content on the growth of tomato plug seedling were studied by using orthogonal test design. The results showed that the important order of different factors to the above-ground growth of tomato seedlings was: the quantity of chicken manure > the relative moisture content > the volumetric ratio of vermiculite and chicken manure, while the order to the under-ground growth was: the moisture content > the volumetric ratio of vermiculite and corn stalk substrate > the quantity of chicken manure. The optimal combination was obtained in this experiment, which the relative moisture content was 85% and the volumetric ratio of vermiculite to Corn stalk substrate 1:1, and the quantity of chicken manure 15 g in per plug trays. The results of this experiment provided a useful reference to the utilization of corn stalk substrate and developing new type substrates.
Number of references:15
Main heading:Substrates
Controlled terms:Clay minerals - Experiments - Fertilizers - Fruits - Manures - Meats - Moisture - Moisture determination
Uncontrolled terms:Chicken manure - Corn stalk - Horticultural crops - Moisture contents - Optimal combination - Orthogonal test design - Plug seeding - Plug seedling - Seedling production - Tomato seedlings - Volumetric ratio
Classification code:804 Chemical Products Generally - 813.1 Coating Techniques - 821.2 Agricultural Chemicals - 944.2 Moisture Measurements - 821.4 Agricultural Products - 822.3 Food Products - 901.3 Engineering Research - 821.5 Agricultural Wastes - 801.4 Physical Chemistry - 801 Chemistry - 443.1 Atmospheric Properties - 452.3 Industrial Wastes - 461 Bioengineering and Biology - 482.2 Minerals - 712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits
DOI:10.3969/j.issn.1002-6819.2009.12.044
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 59>
Accession number:20100812731077
Title:Validity examination of simulated results of crop water requirements
Authors:Yu, Chan (1); Chaolunbagen (1); Gao, Ruizhong (1); Zhu, Zhongyuan (1)
Author affiliation:(1) College of Hydraulics and Civil Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China; (2) General Hydrology Bureau of Inner Mongolia, Huhhot 010010, China
Corresponding author:Chaolunbagen
(Chaolunbagen@cast.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:13-21
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Crop water requirement is very important parameter for making high efficient irrigation schedule, irrigation and drainage planning and scientific allocation of water resources. At present, the main approaches used for simulating crop water requirements include FAO-56 dual crop coefficient method, two source model of conservation of energy, water balance model of root zone and SWAP model. Each approach had its own advantages, disadvantages and applying conditions. No matter which approach is used for simulating crop water requirement, the validity of modeling results should be examined. Otherwise, the simulated crop water requirement could not be used for the engineering projects mentioned above. In the paper, based on irrigation experiments data, the crop water requirements of planted Elymus and Agropyron were simulated by the dual crop coefficient approach. Fitting correlation diagram method, regression analysis and indicating residual estimation errors were also used to examine the validity of simulated results. The first approach was a qualitative test method, and gave statistical correlation trend. Second and third approaches were quantitative test methods, and indicated the goodness of fitting and the ranges of the residual estimation errors. By integrating qualitative approach with the quantitative ones, the consistency between the simulated values and the observed values of crop water requirements was effectively examined, which the simulated results can be applied in the engineering projects.
Number of references:14
Main heading:Water resources
Controlled terms:Crops - Errors - Irrigation - Regression analysis
Uncontrolled terms:Conservation of energy - Correlation diagrams - Crop coefficient - Crop water requirements - Dual crop coefficient approach - Engineering project - Estimation errors - Irrigation schedule - Modeling results - Qualitative approach - Qualitative test - Quantitative tests - Root zone - Simulated results - Statistical correlation - SWAP model - Two-source model - Validity examination - Water balance models - Water requirements
Classification code:444 Water Resources - 731 Automatic Control Principles and Applications - 821.3 Agricultural Methods - 821.4 Agricultural Products - 921 Mathematics - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2009.12.003
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 60>
Accession number:20100812731086
Title:Effect of spatial distribution of rainfall erosivity on soil loss at catchment scale
Authors:Cheng, Linlin (1); Zhao, Wenwu (2); Zhang, Yinhui (3); Xu, Haiyan (2)
Author affiliation:(1) College of Geoscience and Surveying Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China; (2) State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China; (3) Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100190, China
Corresponding author:Zhao, W.
(zhaoww@bnu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:68-73
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For identifying the effects of spatial distribution of rainfall erosivity on soil loss, Zichang catchment of Chinese loess hilly-gully area was taken as an example, and the concept of regional gravity center was used to analyze the spatial distribution of rainfall erosivity. The effect of the spatial movement of rainfall erosivity gravity center on soil loss in different years was analyzed based on GIS tools. The results indicated that the distance between gravity centers of rainfall erosivity and hydrological station and that between gravity centers of rainfall erosivity and gravity centers of steep slope grade (higher than 15°) had significant influence on soil loss. When gravity center of rainfall erosivity was in the middle place between hydrological station and gravity centers of steep slope grade (higher than 15°), there would also be more soil loss. The changes of gravity centres of rainfall erosivity from north to south had little effect on soil loss. However, the changes from west to east had much effect. For catchment, with the changes of spatial distribution of rainfall erosivity, the fitting relations between rainfall erosivity and slope grade, and land use, and hydrological station would be changed, which would lead to the amount of soil loss increased or decreased.
Number of references:15
Main heading:Soil surveys
Controlled terms:Catchments - Land use - Rain - Runoff - Size distribution - Soils
Uncontrolled terms:Catchment scale - Chinese loess - Gravity centers - Rainfall erosivity - Soil loss - Spatial distribution - Steep slope
Classification code:933.1 Crystalline Solids - 931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 531.2 Metallography - 483.1 Soils and Soil Mechanics - 444.1 Surface Water - 444 Water Resources - 443.3 Precipitation - 442.2 Land Reclamation - 442.1 Flood Control - 423 Non Mechanical Properties and Tests of Building Materials - 406.2 Roads and Streets - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2009.12.012
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 61>
Accession number:20100812731125
Title:Land use change in farming-pastoral region of Inner Mongolia based on GIS and Markov model
Authors:Guo, Biyun (1); Zhang, Guangjun (1)
Author affiliation:(1) College of Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) Department of Forestry, Michigan State University, East Lansing 48823, United States
Corresponding author:Guo, B.
(biyunguo@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:291-298
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For studying the influence of human activity on spatial distribution, transformation of land use type and ecological environment in farming-pastoral region, Taipusi Qi in Inner Mongolia was selected to analyze the change of land use, land cover and spatial landscape pattern in the past 30 years by remote sensing (RS) and geographic information system (GIS). The Markov model was applied to predict land use variation in the following 20 years. The results showed that grassland and farmland were the main land use types of research area with obvious reciprocal transformation. Grassland was mainly transferred to farmland in 1975-1990. Farmland was chiefly converted to grassland, and grassland tended to increase in 1990-2004. The landscape diversity in the study area rose with the contagion index decreasing and fragmentation degree being intensified during 1975-2000. The advantageous patches maintained good connectivity with the increasing patch cohesion index and the decreasing landscape fragmentation during 2000-2004. The change of human interference intensity played an important role on the variation of land use structure. Land use intensity was mainly affected by the changes in population as well as national land use policies. In the following 20 years, the agriculture land area would tend to decrease, the grassland and unused land area would have a slight reduction by contrasting the increasing the forest land area notably. It is a basic approach to ecological restoration by implementing rational land use policies and utilizing ecosystem self-repair functions.
Number of references:31
Main heading:Information use
Controlled terms:Ecosystems - Farms - Forestry - Geographic information systems - Information systems - Land use - Markov processes - Rational functions - Remote sensing - Restoration
Uncontrolled terms:Contagion index - Ecological environments - Ecological restoration - Forest land - Fragmentation degree - Human activities - Human interference - Inner Mongolia - Land areas - Land cover - Land use policy - Land use type - Land-use change - Landscape diversity - Landscape fragmentation - Landscape pattern - Markov - Markov model - Research areas - Self-repair function - Spatial distribution - Study areas
Classification code:922.1 Probability Theory - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.0 Woodlands and Forestry - 903.2 Information Dissemination - 903.3 Information Retrieval and Use - 913.5 Maintenance - 921 Mathematics - 731.1 Control Systems - 454.3 Ecology and Ecosystems - 442.2 Land Reclamation - 409 Civil Engineering, General - 403 Urban and Regional Planning and Development - 402 Buildings and Towers - 723.3 Database Systems
DOI:10.3969/j.issn.1002-6819.2009.12.051
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
<RECORD 62>
Accession number:20100812731120
Title:Evaluation on performance and thermal environment of hoop structure for finishing pigs
Authors:Kang, Guohu (1); Dong, Hongmin (1); Tao, Xiuping (1); Zhu, Zhiping (1)
Author affiliation:(1) Institute of Environment and Sustainable Development in Agriculture, Animal Environmental Facility Surveillance, Inspection and Testing Center (Beijing), Ministry of Agriculture, Beijing 100081, China
Corresponding author:Dong, H.
(Donghm@mail.caas.net.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:25
Issue:12
Issue date:December 2009
Publication year:2009
Pages:259-264
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A hoop structure swine production system was designed aiming to reduce wastewater from pig production. A 100-head hoop structure for finishing pigs was built in Beijing, and the environment status and pig performance in the hoop structure were studied and compared with that of control in typical brick-concrete concentrated swine house. Results showed that the average inner air temperature in hoop structure and control house was 26.6°C, 27°C, and relative humidity was 77%, 71%, respectively, in summer; Average inner air temperature was 18.9°C, 21°C, and relative humidity was 50%, 49%, respectively, in spring; Pig's daily average gain and feed grain ratio were no significantly different between the hoop structure and control house, but water-saving effect was very significant in the hoop structure, with water consumption in hoop decreased by 13.2 L/d each pig in summer and 1.4 L/d each pig in spring compared with control house, which reduced 16.5 L/d and 4.7 L/d waste water in summer and spring, respectively.
Number of references:15
Main heading:Humidity control
Controlled terms:Atmospheric humidity - Atmospheric temperature - Houses - Moisture - Sewage - Wastewater - Water conservation - Water supply
Uncontrolled terms:Air temperature - Environment impact - Pig house - Pig production - Relative humidities - Swine production - Thermal environment - Water consumption - Water saving
Classification code:801.4 Physical Chemistry - 643.3 Air Conditioning - 453.1 Water Pollution Sources - 452.3 Industrial Wastes - 452.1 Sewage - 446.1 Water Supply Systems - 444 Water Resources - 443.1 Atmospheric Properties - 403.1 Urban Planning and Development - 402.3 Residences - 402 Buildings and Towers
DOI:10.3969/j.issn.1002-6819.2009.12.046
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.
期刊信息
- 主管单位 中国科学技术协会
- 主办单位 中国农业工程学会
- 主编 朱明
- 总编/社长 王应宽
- 地址 北京朝阳区麦子店街41号
- 邮编 100125
- 电话 010－59197078/7077/7076
- 邮箱 tcsae@tcsae.org
微信公众号
二维码
友情链接
- Bioresource Technology
- Industrial Crops and Products
- Biomass & Bioenergy
- Biosystems Engineering
- Aquacultural Engineering
- International Journal of Agricultural and Biological Engineering
- Journal of Irrigation and Drainage Engineering
- Paddy and Water Environment
- Journal of Agricultural Engineering
- Transactions of the ASABE
- Revista Brasileira de Engenharia Agricola e Ambiental
- Applied Engineering in Agriculture
- Engenharia Agricola
- AMA-Agricultural Mechanization in Asia Africa and Latin America
- 中华人民共和国农业农村部-MARA
- 中国科学技术协会CAST
- 国家新闻出版署
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