2010年4月第26卷第4期

2010年4月第26卷第4期

<RECORD 1>
Accession number:20102413003580
Title:Development of ecological information system of returning farmland for conservation in middle and lower reaches of Shiyang River Basin
Authors:Yang, Sen (1); Xiong, Youcai (1); Sun, Guojun (1); Zhu, Shaojun (1); Li, Jinan (1); Jin, Baocheng (1); Hu, Xiaojun (1); Hou, Xiaokai (3); Zhao, Xuzhe (1); Li, Fengmin (1)
Author affiliation:(1) Key Laboratory of Arid and Grassland Ecology Ministry of Education, Lanzhou University, Lanzhou 730000, China; (2) College of Life Sciences, Beijing Normal University, Beijing 100875, China; (3) College of Earth and Environmental Science, Lanzhou University, Lanzhou 730000, China
Corresponding author:Xiong, Y.
(xiongyc@lzu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:186-191
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 area of Liangzhou County and Minqin County which located at middle and lower reaches of Shiyang River Basin is one of the areas with the most severe water shortage and ecological crisis in China. The program of returning farmland for conservation is widely recognized as a critical harnessing measure to recover local ecological environment. Nevertheless, high dispersion and large quantity of cropland in this area bring about enormous difficulty to the management of returning farmland for conservation. It is urgent to develop an efficient and prompt ecological information management system. In this study, the ecological information statistical search system of returning land for maintenance was constructed, using field survey data as basic database, and Resource-2 satellite images as additional calibration with secondary ArcGIS reconstruction technique and through combing MO2.4 module and VB6.0 language. Through loading field data of 2190 fields, it could serve to promptly search and effectively manage the sizes and characters of returning lands for ecological restoration at different spatial scales, according to different administrative units and different years. And it also could function to efficiently monitor and manage the areas properties (reporting area, re-farming area and measuring area) temporarily and spatially. This system could provide efficient ecological information platform and technique bolster for future timing dynamic management practice in this region.
Number of references:14
Main heading:Conservation
Controlled terms:Ecology - Farms - Geographic information systems - Information management - Information systems - Landforms - Management information systems - Stream flow - Water supply - Watersheds
Uncontrolled terms:Dynamic management - Ecological crisis - Ecological environments - Ecological information - Ecological information management - Ecological restoration - Field data - Field surveys - High dispersion - Re-farming - Reconstruction techniques - River basins - Satellite images - Search system - Secondary development - Secondary development of GIS - Spatial scale - Water shortages
Classification code:912.2 Management - 903.3 Information Retrieval and Use - 903.2 Information Dissemination - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 723.3 Database Systems - 723.2 Data Processing and Image Processing - 631.1 Fluid Flow, General - 481.1 Geology - 454.3 Ecology and Ecosystems - 454 Environmental Engineering - 446.1 Water Supply Systems - 444.1 Surface Water - 407.2 Waterways
DOI:10.3969/j.issn.1002-6819.2010.04.031
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 2>
Accession number:20102413003602
Title:Application of heat pipe technology in ice storage of natural coldness resource
Authors:Wang, Shiqing (1); Zhang, Yan (1); Jiang, Wenli (1); Pu, Chuanfen (1); Zhang, Ming'an (1); Zhang, Jie (1)
Author affiliation:(1) College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (2) Modern Agricultural Quality and Safety Engineering Key Laboratory, 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:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:312-316
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 store the natural coldness resource conveniently and quickly without noises and energy consumption, an experimental equipment of the heat transferring in a set of heat pipes, storing coldness via natural coldness resource, was designed on the basis of heat pipe technology. A one-dimensional heat transfer model on the process of ice making in single-pipe was established and verified by experiment results as follows: the radius of ice block was the power function of time of ice making, the analytic solution of the one-dimensional heat transfer model could be used to predict reliably the natural results, and the distance of a set of heat pipes, and they could be designed by the model also. The research offers effective theoretical basis for the design of the spacing interval of heat pipes and also predicting of the ice amount produced.
Number of references:18
Main heading:Ice
Controlled terms:Heat pipes - Heat transfer
Uncontrolled terms:Analytic solution - Energy consumption - Experimental equipments - Heat pipe technology - Ice blocks - Ice storage - One-dimensional heat - Power functions - Theoretical basis
Classification code:443 Meteorology - 616.1 Heat Exchange Equipment and Components - 619.1 Pipe, Piping and Pipelines - 641.2 Heat Transfer
DOI:10.3969/j.issn.1002-6819.2010.04.053
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 3>
Accession number:20102413003599
Title:Comparative on regional cultivated land intensive use based on principal component analysis and analytic hierarchy process in Three Gorges Reservoir Area
Authors:Cao, Yingui (1); Zhou, Wei (1); Wang, Jing (2); Yuan, Chun (1); Zhao, Li (3)
Author affiliation:(1) School of Land Science and Technology, China University of Geosciences, Beijing 100083, China; (2) Land Key Laboratory of China Land Survey and Plan Institute, Beijing 100035, China; (3) Town and College Contracture Institute, Agriculture University of Hebei, Baoding 071001, China
Corresponding author:Cao, Y.
(caoyingui1982@126.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:291-296
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 construct indicator system of the cultivated land intensive use appraisal and compare two appraisal methods to find the difference of intensive use scores, this paper takes cultivated land intensive use in Three Gorges Reservoir Area as researching object, and connects closely the concept of land intensive use. Principal component analysis (PCA) and analytic hierarchy process (AHP) were used to calculate the intensive use scores in 21 counties according to the same appraisal indicator system. In the same time, the appraisal results were compared and the results showed that difference of appraisal results order was small. The intensive use scores were divided into four grades, the spatial difference of grades were implemented by the ARCGIS 9.2. The distributions of intensive use scores took on evident consistency. Impact trend of contribution by PCA was similar to weight trend of code layer by AHP. Above all, on one hand, this paper can improve the accuracy of intensive use appraisal, on the other hand, give some advices to enhance intensive use degree of cultivated land in Three Gorges Reservoir Area.
Number of references:15
Main heading:Principal component analysis
Controlled terms:Analytic hierarchy process - Hierarchical systems - Land use
Uncontrolled terms:Appraisal method - Cultivated lands - Indicator system - Spatial differences - Three gorges reservoir area
Classification code:403 Urban and Regional Planning and Development - 442.2 Land Reclamation - 731.1 Control Systems - 921 Mathematics - 922.2 Mathematical Statistics - 961 Systems Science
DOI:10.3969/j.issn.1002-6819.2010.04.050
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 4>
Accession number:20102413003574
Title:Relationships between water indexes and soil moisture/crop physiological indexes using ground-based remote sensing and field experiments
Authors:Zhang, Jiahua (1); Yao, Fengmei (2); Li, Li (1); Zhang, Wenzong (4)
Author affiliation:(1) Chinese Academy of Meteorological Sciences, Beijing 100081, China; (2) College of Earth Science, The Graduate School of Chinese Academy of Sciences, Beijing 100049, China; (3) Meteorology Research Institute of Guangxi Zhuang Autonomous Region, Nanning 530022, China; (4) Meteorological Institute of Hebei Province, Shijiazhuang 050000, China
Corresponding author:Zhang, J.
(zhangjh@cams.cma.gov.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
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:The controlling experiment of soil moisture was carried out for the study of crop water spectral features affected by the drought in crop early growth and development stages. The spectra of winter wheat were measured using field spectral radiometer in Gucheng Experiment Station of Heibei Province, and normalized difference water index (NDWI) and simple radio water index (SRWI) were calculated, respectively. Meanwhile, the canopy physiological indexes including chlorophyll concentration (Chl), leaf area index (LAI), plant height (H), leaf relative water content (LRWC) and soil moisture (SM) were measured. The results show that there were significant correlations between canopy physiological indexes of winter wheat and SM, the largest correlation coefficient is 0.657, which indicated that crop early photosynthetic and growth were directly affected by the soil moisture. The correlation coefficient is 0.545 among NDWI/SRWI and SM, which show a weak correlation; whereas, there are not obvious between physiological indexes of winter wheat and WI; especially, the correlation coefficient is just equal to 0.175 among NDWI/SRWI and LRWC. The conclusion was that the water index implied the soil moisture condition instead of crop water content in the low coverage crop growing period.
Number of references:19
Main heading:Water content
Controlled terms:Chlorophyll - Crops - Cultivation - Drought - Experiments - Moisture control - Moisture determination - Plants (botany) - Porphyrins - Remote sensing - Soil moisture
Uncontrolled terms:Chlorophyll concentration - Correlation coefficient - Early growth - Field experiment - Ground-based remote sensing - Growing period - Leaf area index - Leaf relative water contents - Normalized difference water index - Normalized difference water index (NDWI) - Physiological indices - Plant height - Spectral feature - Spectral radiometers - Water index - Weak correlation - Winter wheat
Classification code:901.3 Engineering Research - 821.4 Agricultural Products - 821.3 Agricultural Methods - 804.1 Organic Compounds - 801.2 Biochemistry - 944.2 Moisture Measurements - 731.3 Specific Variables Control - 483.1 Soils and Soil Mechanics - 461.9 Biology - 444 Water Resources - 443.3 Precipitation - 731.1 Control Systems
DOI:10.3969/j.issn.1002-6819.2010.04.025
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 5>
Accession number:20102413003561
Title:Effect of straw-incorporation on soil infiltration characteristics and soil water holding capacity
Authors:Wang, Zhen (1); Feng, Hao (1)
Author affiliation:(1) College of Water Resource and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) Water and Soil Conservation Research Institute, China Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
Corresponding author:Feng, H.
(nercwsi@vip.sina.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:75-80
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 infiltration process and soil water retention curve were determined for soils incorporated with wheat straws in different manners, i.e. comminuted, aminated or blended with inorganic soil amendment, and their effects on soil infiltration characteristics, soil water retention capacity were compared and analyzed. Results showed that long straw could decrease soil infiltration apparently. Straws comminuted and aminated were better than that of control and the comminuted straw at raising stable infiltration rate and cumulative infiltration, while its bulk density after 30 days of incubation was smaller by 7.13% than that of control. The inorganic soil amendment could considerably increase stable infiltration rate and cumulative infiltration. However, its effects on decreasing soil bulk density and raising the overall porosity were not greater than that of straw comminuted and aminated. The straw and inorganic soil amendment tended not to play a positive interaction when they were used together. The difference of the soil water holding capacity of all the treatments was indistinctively. However, the finely comminuted straw could keep higher water holding capacity.
Number of references:27
Main heading:Soil mechanics
Controlled terms:Amination - Amines - Grinding (comminution) - Seepage - Soil moisture - Underwater soils
Uncontrolled terms:Bulk density - Fe(OH)<inf>3</inf> - Infiltration rate - Inorganic soils - Positive interaction - Soil bulk density - Soil infiltration - Soil water holdings - Soil water retention - Soil water retention curves - Water holding capacity - Wheat straws
Classification code:804.1 Organic Compounds - 802.3 Chemical Operations - 802.2 Chemical Reactions - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 441 Dams and Reservoirs; Hydro Development - 407 Maritime and Port Structures; Rivers and Other Waterways
DOI:10.3969/j.issn.1002-6819.2010.04.012
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 6>
Accession number:20102413003558
Title:Establishment and verification of groundwater vulnerability zoning model for reclaimed water irrigation district
Authors:Xu, Xiaoyuan (1); Yin, Shiyang (1); Liu, Honglu (1); Wu, Wenyong (1); Huang, Qiang (2); Ma, Zhijun (1)
Author affiliation:(1) Beijing Hydraulic Research Institute, Beijing 100048, China; (2) Institute of Water Resources and Hydro-Electric Engineering of Xi'an University of Technology, Xi'an 710048, 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:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:57-63
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 protect and utilize groundwater resource, the groundwater special vulnerability zoning model for the reclaimed water irrigation district was established which was based on DRASTIC model. The six factors were considered which were the groundwater depth, rainfall recharge, surface soil media type, unsaturated zone lithology, hydraulic conductivity of aquifer and land use type in this model according to the actual conditions of study area and influencing factors of groundwater vulnerability. By the GIS technology and Nemerow index, the groundwater comprehensive pollution index distributing map was maken, and the verification method and classification standards of the groundwater vulnerability zoning were explored. The results indicated that there was a significant regression relationship between groundwater comprehensive pollution index and groundwater vulnerability in research area (R2=0.9591). The groundwater vulnerability assessment result by the DRASTIC model was reasonable. This result can be used for the planning of the groundwater protection and utilization in reclaimed water irrigation districts.
Number of references:17
Main heading:Groundwater resources
Controlled terms:Aquifers - Geologic models - Groundwater pollution - Irrigation - Lithology - Rain - Wastewater reclamation - Zoning
Uncontrolled terms:Classification standard - DRASTIC model - GIS technology - Ground water protection - Groundwater models - Groundwater vulnerability - Influencing factor - Irrigation districts - Land use type - Pollution index - Rainfall recharge - Re-claimed water - Reclaimed water irrigation district - Regression relationship - Research areas - Study areas - Surface soil - Unsaturated zone - Verification method
Classification code:821.3 Agricultural Methods - 481.1 Geology - 454.2 Environmental Impact and Protection - 453.1 Water Pollution Sources - 452.4 Industrial Wastes Treatment and Disposal - 444.2 Groundwater - 443.3 Precipitation - 403.2 Regional Planning and Development - 403.1 Urban Planning and Development
DOI:10.3969/j.issn.1002-6819.2010.04.009
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 7>
Accession number:20102413003607
Title:Technology for recovering juice from citrus pulp with enzyme treatments and its pilot plant test
Authors:Zhang, Qisheng (1); Chen, Gong (1); Wu, Houjiu (2); Wang, Hua (2); Yu, Wenhua (1); You, Jinggang (1); Zhang, Wenxue (3); Li, Jiezhi (1); Zhang, Ying (1)
Author affiliation:(1) Sichuan Academy of Food and Fermentation Industries, Chengdu 611130, China; (2) Citrus Research Institute, Chinese Academy of Agriculture Science, Chongqing 400712, China; (3) College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, China
Corresponding author:Yu, W.
(ywh700115@163.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:340-346
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:Citrus juice was recovered from pulp by enzyme. Taking composite indicator as the main index, the technology was optimized with enzyme dosage, reaction time, reaction temperature, and ratio of pulp to water dilution through single-factor test and responsible surface design. Best predicted composite indicator 0.0138 was got under the conditions: enzyme dosage of 213.38 μg/L, reaction time of 164.02 min, reaction temperature of 53.76°C, and ration of pulp to water 1:1.05 (by weight). And it was proved correct that the composite indicator 0.0137 was got by the confirmative test. Meanwhile pilot plant tests were carried out based on the optimized technology. Changes of solid soluble, acid, pH and amino acids were studied during the tests. Recovered juice in the tests can alternatively replace restored juice in citrus beverage, since the similar results of the sensory evaluation.
Number of references:26
Main heading:Enzymes
Controlled terms:Agriculture - Amino acids - Catalysts - Energy conversion - Fruit juices - Optimization - Organic acids - Pilot plants - Recovery - Testing - Water quality
Uncontrolled terms:Citrus juices - Citrus pulp - Composite indicators - Enzyme dosage - Enzyme treatment - Pilot plant test - Reaction temperature - Reaction time - Sensory evaluation - Surface design - Theoretical condense energy - Water dilution
Classification code:921.5 Optimization Techniques - 622.5 Radioactive Wastes - 801.2 Biochemistry - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 822.3 Food Products - 912.1 Industrial Engineering - 531 Metallurgy and Metallography - 402.1 Industrial and Agricultural Buildings - 422.2 Test Methods - 423.2 Test Methods - 525.5 Energy Conversion Issues - 445.2 Water Analysis - 461 Bioengineering and Biology - 461.2 Biological Materials and Tissue Engineering - 453.2 Water Pollution Control
DOI:10.3969/j.issn.1002-6819.2010.04.058
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 8>
Accession number:20102413003592
Title:Low temperature pyrolysis characteristics of corn cob and eucalyptus
Authors:Wu, Yimin (1); Zhao, Zengli (1); Chang, Sheng (1); Li, Haibin (1)
Author affiliation:(1) Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; (2) Graduate School of Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Zhao, Z.
(zhaozl@ms.giec.ac.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
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:To achieve comprehensive utilization of different biomass resources in classification, the low temperature pyrolysis characteristics of corn cob and eucalyptus were investigated by means of thermogravimetric analysis (TGA) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). Experimental results showed that the pyrolysis products at low temperature were significantly different for different kinds of biomass materials. The degradation of corn cob mainly generated acetic acid, 1-hydroxy-propanone, 2, 3-dihydro-benzofuran and 2-methoxy-4-ethenyl-phenol. While acetic acid, furfural and 5, 6-dihydro-4-hydroxy-2H-pyran-2-one were associated with the degradation of eucalyptus. The species in the pyrolsis products of biomass at low temperature were found to be less, and distributed in a relatively narrow temperature range. The contents of acid and furan products from pyrolysis of corn con and eucalyptus, and pyrans from eucalyptus were decreased with pyrolysis temperature increasing. The hemicellulose in biomass was effectively decomposed by low temperature pyrolysis, which could provide theoretical guidance for decreasing acidity and water of bio-oil by pyrolysis at medium temperatures.
Number of references:15
Main heading:Pyrolysis
Controlled terms:Acetic acid - Acetone - Acids - Aldehydes - Biodegradation - Biomass - Degradation - pH effects - Phenols - Thermogravimetric analysis
Uncontrolled terms:Benzofurans - Bio oil - Biomass materials - Biomass resources - Classification , - Corn cob - Low temperatures - Low-temperature pyrolysis - Medium temperature - Methoxy - Narrow temperature ranges - Propanone - Py-GC/MS - Pyrolysis products - Pyrolysis temperature - Pyrolysis-gas chromatography/mass spectrometry (py-GC/MS)
Classification code:821.5 Agricultural Wastes - 805.1.1 Biochemical Engineering - 804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 801.2 Biochemistry - 801.1 Chemistry, General - 801 Chemistry - 525.1 Energy Resources and Renewable Energy Issues - 461.8 Biotechnology
DOI:10.3969/j.issn.1002-6819.2010.04.043
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 9>
Accession number:20102413003609
Title:Simulation on rapeseed drying in superheated steam fluidized bed at atmosphere pressure
Authors:Gong, Yingzhen (1); Niu, Haixia (1); Xiao, Zhifeng (1); Liu, Xiangdong (1); Yang, Deyong (1)
Author affiliation:(1) College of Engineering, China Agricultural University, Beijing 100083, China; (2) Department of Machine Electricity Engineering, Inner Mongolia Machine Electricity Occupation Technical College, Hohhot 010051, China
Corresponding author:Yang, D.
(ydy@cau.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
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 improve the precision of superheated steam fluidized bed drying model, an unsteady axisymmetric two-dimensional model was established based on the drying mechanism of superheated steam fluidized bed drying and Eulerian-Eulerian theory to simulate the process of superheated steam fluidized bed drying and the distributions of some parameters in this paper. The finite volume method was applied to solve the mathematical model. It showed that the simulated drying dynamic characteristics were coincidence with the experiment results, the established mathematical model could describe the drying process and the behavior of rapeseed during the superheated steam fluidized bed drying at atmosphere pressure.
Number of references:26
Main heading:Fluidized beds
Controlled terms:Computer simulation - Curing - Drying - Fluidization - Fluidized bed process - Mathematical models - Steam
Uncontrolled terms:Atmosphere pressure - Axisymmetric - Drying mechanism - Drying process - Dynamic characteristics - Eulerian-Eulerian - Eulerian-Eulerian theory - Fluidized bed drying - Mathematical simulations - Superheated steam - Two dimensional model
Classification code:723.5 Computer Applications - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 802.3 Chemical Operations - 815.1 Polymeric Materials - 818.3 Rubber and Elastomer Processing - 921 Mathematics - 642.2 Industrial Furnaces and Components - 521.2 Combustors - 533.1 Ore Treatment - 614 Steam Power Plants - 617.2 Steam Turbines - 617.3 Steam Engines - 641.1 Thermodynamics - 642.1 Process Heating
DOI:10.3969/j.issn.1002-6819.2010.04.060
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 10>
Accession number:20102413003560
Title:Effect of PAM on soil physical properties and water distribution
Authors:Han, Fengpeng (1); Zheng, Jiyong (2); Li, Zhanbin (1); Zhang, Xingchang (2)
Author affiliation:(1) Institute of Water Resources and Hydro-Electric Engineering, Xi'an University of Technology, Xi'an 712100, China; (2) Institute of Soil and Water Conservation, Chinese Academy of Sciences, Northwest Agriculture and Forestry University, Yangling 712100, China; (3) College of Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Zhang, X.
(zhangxc@ms.iswc.ac.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:70-74
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 impact of applied polyacrylamide (PAM) on the soil physics and the distribution of soil water content under the natural condition, an experiment and research on eleven various PAM amounts plots of Alfalfa and one bare plot have been studied. The results showed that during the 0-2 g/m2 of PAM amount, the bulk density decreased with increasing amounts of PAM but the saturated hydraulic conductivity increased. The bulk density increased and the saturated hydraulic conductivity decreased when the concentration of PAM was higher than 2 g/m2. During the range of 0-3 g/m2 the changes between the bulk density, saturated hydraulic conductivity and concentration of PAM could be modeled by quadratic equation. The surface soil moisture increased with the increasing amounts of PAM. There were no significant difference about the soil moisture between 20-60 cm and 100-200 cm depth, while the soil moisture increased in 60-100 cm with the increasing amounts of PAM in the range of 0-2 g/m2 but decreased when the concentration of PAM was higher than 2 g/m2.
Number of references:20
Main heading:Hydraulic conductivity
Controlled terms:Moisture determination - Physical properties - Soil mechanics - Soil moisture - Underwater soils - Water content - Water distribution systems - Water supply
Uncontrolled terms:Bulk density - Concentration of - Natural conditions - Polyacrylamides - Quadratic equations - Saturated hydraulic conductivity - Soil physical property - Soil physics - Soil water content - Soil-water distribution - Surface soil moisture - Water distributions
Classification code:944.2 Moisture Measurements - 931.2 Physical Properties of Gases, Liquids and Solids - 632.1 Hydraulics - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 446.1 Water Supply Systems - 444 Water Resources
DOI:10.3969/j.issn.1002-6819.2010.04.011
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 11>
Accession number:20102413003562
Title:Prediction of winter wheat evapotranspiration based on BP neural networks
Authors:Chen, Bo (1); Ouyang, Zhu (1)
Author affiliation:(1) Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Ouyang, Z.
(ouyz@igsnrr.ac.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:81-86
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:By adopting meteorological data and the data from 2003 to 2006 collected from large weighing lysimeter with the crop of winter wheat at Yucheng Comprehensive Experimental Station, Chinese Academy of Sciences, a predicted model for winter wheat evapotranspiration was developed. Based on BP neural network, the model performance was tested with inputs of daily maximum temperature, net radiation, soil water content of top 60 cm layer, date number and measured crop coefficient and output of observed evaportranspiration. The topology of the neural network was 5-9-1 and the training function was Trainbr. The results showed that the model was good in simulating water consumption of winter wheat with average relative error of 13.1%, standard error of 0.88 mm, and Nash-Sutcliffe efficiency coefficient of 0.865. And the model can meet the requiements of production.
Number of references:29
Main heading:Neural networks
Controlled terms:Backpropagation - Crops - Evapotranspiration - Forecasting - Geologic models - Meteorology - Soil moisture - Speech recognition - Underwater soils - Water content - Water supply
Uncontrolled terms:Average relative error - BP neural networks - Chinese Academy of Sciences - Crop coefficient - Efficiency coefficient - Evaportranspiration - Experimental stations - Maximum temperature - Meteorological data - Model performance - Net radiation - Soil water content - Standard errors - Training function - Water consumption - Winter wheat
Classification code:723.4 Artificial Intelligence - 723.5 Computer Applications - 751.5 Speech - 922.2 Mathematical Statistics - 802.3 Chemical Operations - 912.2 Management - 921 Mathematics - 821.4 Agricultural Products - 483.1 Soils and Soil Mechanics - 481.1 Geology - 443 Meteorology - 444 Water Resources - 444.1 Surface Water - 446.1 Water Supply Systems - 461.1 Biomedical Engineering - 471.1 Oceanography, General
DOI:10.3969/j.issn.1002-6819.2010.04.013
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 12>
Accession number:20102413003601
Title:Influences of farmland classification factors on grain production
Authors:Yang, Jianbo (1); Wang, Zhaohui (2); Qiu, Shike (1); Wang, Li (3); Yang, Jianfeng (1); Tian, Yan (1); Song, Yanhua (1)
Author affiliation:(1) Institute of Geography, Henan Academy of Sciences, Zhengzhou 450052, China; (2) Zhengzhou Digital City Management Network Data Center, Zhengzhou 450007, China; (3) Landform Land Ownership Teaching Headquarter, Topography Technical Secondary School of Zhengzhou, Zhengzhou 450052, China
Corresponding author:Yang, J.
(yjianbo001@163.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
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:In order to explore the influences of farmland classification factors on grain production, the paper adopted spatial analysis, modeling analysis, qualitative analysis and quantitative analysis and so on. Model of quantitative relationship between farmland classification single-factor and grain production, and relation model between combined factors and grain production were established. The results of modeling analysis showed that the grade change of classification single-factor led to the change of grain production capability, the change range was 45-1335 kg/km2. The maximum value was between grade 2 and 3 of effective soil layer thickness, the minimum value was between grade 1 and 2 of drainage condition. The effect of combination of factors on production showed that one of the factors changes caused the change of the farmland natural quality mark and production. The natural quality mark changed from 0.5 to 2.4 and corresponding grain production changed from 760 to 11000 kg /km2, which was natural quality mark changes every 0.1 would lead to 500 kg /km2 change of grain production. The research conclusion shows the changes of farmland single-factor and combination of factors lead to large effect on grain production, the construction of grain production capability should establish specific measures based on factor features of farmland classification in different regions.
Number of references:23
Main heading:Quality control
Controlled terms:Evolutionary algorithms - Farms - Land use
Uncontrolled terms:Drainage condition - Grade change - Grain production - Henan Province - Maximum values - Minimum value - Modeling analysis - Qualitative analysis - Quality marks - Quantitative analysis - Relation models - Soil layer - Spatial analysis
Classification code:403 Urban and Regional Planning and Development - 442.2 Land Reclamation - 723 Computer Software, Data Handling and Applications - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 913.3 Quality Assurance and Control - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2010.04.052
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 13>
Accession number:20102413003579
Title:Remote sensing-based monitor dynamically grassland degradation in typical regions, middle and upper reaches of Heihe River Basin, Western China
Authors:Du, Ziqiang (1); Wang, Jian (2); Li, Jianlong (3); Yang, Feng (3); Yang, Qi (3); Qian, Yurong (3)
Author affiliation:(1) College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China; (2) Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China; (3) College of Life Science, Nanjing University, Nanjing 210093, China
Corresponding author:Du, Z.
(ziqdu@163.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:180-185
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 severity of grassland degradation in the typical regions near the middle and upper reaches of Heihe River Basin, Western China was assessed from TM image in conjunction with in situ samples of above-ground biomass, fractional grassland cover and palatable grass percent collected over 1 m2 sampling plots. The above-ground biomass, fractional grassland cover and palatable grass percent were integrated to develop a grassland vegetation degradation index (GDI). Remote sensing-based monitoring model for grassland degradation was established through regression analyses between GDI and vegetation index derived from TM image. The results of dynamic monitoring situation of grassland degradation using RS, GIS, and GPS techniques showed as follows TM imagery, in conjunction with in situ grassland samples data, could the efficient and accurate assessment of grassland degradation in regional scale, The degradation manifested three levels of degradation severity: severe, intermediate, and slight degradation. The area of severe, intermediate, and slight degradation was 499.86 km2, 772.67 km2 and 916.74 km2, respectively, in 1986; 322.23, 815.20 and 1015.84 km2, respectively, in 2003. The overall situation presented both area and intensity of grassland degradation increased significantly, the degree of degradation worsened as well from 1986 to 2003.
Number of references:28
Main heading:Degradation
Controlled terms:Regression analysis - Remote sensing - Vegetation - Watersheds
Uncontrolled terms:Above ground biomass - Degree of degradation - Dynamic monitoring - Grassland degradation - Grassland degradation index - Grassland vegetation - Heihe river basin - In-situ - Monitoring models - Regional scale - TM image - Vegetation index - Western China
Classification code:922.2 Mathematical Statistics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 802.2 Chemical Reactions - 731.1 Control Systems - 525.1 Energy Resources and Renewable Energy Issues - 461.9 Biology - 444.1 Surface Water
DOI:10.3969/j.issn.1002-6819.2010.04.030
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 14>
Accession number:20102413003613
Title:Theoretical model and experimental validation for modified atmosphere packaging of fruits and vegetables with micro perforated film
Authors:Li, Fang (1); Lu, Lixin (1)
Author affiliation:(1) Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China; (2) Key Laboratory of Food Packaging Techniques and Safety of China National Packaging Corporation, Wuxi 214122, China
Corresponding author:Lu, L.
(lulx@jiangnan.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:375-379
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:Modeling modified atmosphere packaging (MAP) with perforated film is one of key to design the MAP system of fruits and vegetables. Based on the relationship of the aperture and molecular mean free path, and combined with the respiration rate model of produce, a mathematical model based on Fick's law for predicting O<inf>2</inf> and CO<inf>2</inf> exchanges in MAP with micro perforated films was developed. The respiration rates of Lentinula edodes were estimated using the closed system method, and the respiration model for Lentinula edodes was established based on the Michaelis-Menten equation. Fresh Lentinula edodes were packed in plastic jars filled with air and modified atmosphere, which sealed by polyethylene films with different perforation number and perforation diameters. All samples were stored under 25°C and a relative humidity of 50% for more than 50 hours, measuring the gas composition within packs during the storage. Comparison between model prediction and experimental data for gas composition within packs was conducted. Results indicated the model predictions agree well with the experimental data.
Number of references:15
Main heading:Packaging
Controlled terms:Atmospheric humidity - Mathematical models - Vegetables
Uncontrolled terms:Closed systems - Experimental data - Experimental validations - Fick's Law - Gas compositions - Lentinula edodes - MAP systems - Michaelis-Menten equations - Micro-perforated films - Model prediction - Modified atmosphere - Modified atmosphere packaging - Molecular mean free path - Polyethylene film - Relative humidities - Respiration rate - Theoretical models
Classification code:443.1 Atmospheric Properties - 694.1 Packaging - 821.4 Agricultural Products - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2010.04.064
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 15>
Accession number:20102413003588
Title:Analysis on measurement of heat absorption and release of wall and ground in solar greenhouse
Authors:Li, Jianshe (1); Bai, Qing (2); Zhang, Yahong (2)
Author affiliation:(1) School of Horticulture, Northwest Agriculture and Forest University, Yangling 712100, China; (2) School of Agriculture, Ningxia University, Yinchuan 750021, China
Corresponding author:Zhang, Y.
(zhyhcau@sina.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:231-236
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 study observed heat release of soil back wall and ground of greenhouse, and measured surface temperature and heat flux of soil back wall both in sunny days and cloudy days. The result showed that heat release of per unit wall area and ground surface had a close relationship with solar radiation in greenhouse. The heat release of per unit wall area was 1.90 MJ/m2 at night in sunny days, and the heat release of ground was 1.36 MJ/m2; while the heat release of per unit area was 0.76 MJ/m2 at night in cloudy days, and the heat release of ground was 1.34 MJ/m2. During sunny days, the heat release of wall was greater than that of ground, while the heat release of ground was greater than that of wall in cloudy days. No matter it is on sunny days or cloudy days, the total amount of heat release was greater than that of wall, moreover, the ground buffer of cycle heat changing is better than the wall.
Number of references:13
Main heading:Greenhouses
Controlled terms:Heat exchangers - Soils - Sun
Uncontrolled terms:Cloudy days - Ground heat exchangers - Ground surfaces - Heat absorption - Heat release - Per unit - Solar greenhouse - Surface temperatures
Classification code:402.1 Industrial and Agricultural Buildings - 483.1 Soils and Soil Mechanics - 616.1 Heat Exchange Equipment and Components - 657.2 Extraterrestrial Physics and Stellar Phenomena - 821.6 Farm Buildings and Other Structures
DOI:10.3969/j.issn.1002-6819.2010.04.039
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 16>
Accession number:20102413003593
Title:Fourier transform infrared spectrum analysis of gas product from animal manure pyrolysis
Authors:Shang, Bin (1); Dong, Hongmin (1); Zhu, Zhiping (1); Tao, Xiuping (1); Tu, Deyu (1)
Author affiliation:(1) Institute of Agricultural Environment and Sustainable Development, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (2) Animal Environmental Facility Surveillance, Inspection and Testing Center (Minister of Agriculture), Key Laboratory for Agro-Environment and Climate Change (Minister 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:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:259-263
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 gas product evolved from animal manure pyrolysis was studied at a heating rate of 30°C/min by thermogravimetric analysis coupled with fourier transform infrared spectroscopy (FTIR). Experimental results showed that the gas products mainly evolved at the temperature range of 250-500°C, and the main gas products were H<inf>2</inf>O, CO, CO<inf>2</inf> and CH<inf>4</inf> etc.. The evolution curves of H<inf>2</inf>O showed a peak at about 150°C and another peak at about 350°C. The CO<inf>2</inf> evolution curves took on a much higher peak at about 350°C and a small peak at about 710°C. The CO evolution curves took on a peak at about 350°C and a higher peak at about 710°C, and there was only one peak at about 530°C in evolution curves of CH<inf>4</inf>. The results can provide a reference for design and optimization of pyrolysis reactor.
Number of references:18
Main heading:Fourier transforms
Controlled terms:Animals - Anodic oxidation - Chemical reactors - Fertilizers - Fourier transform infrared spectroscopy - Manures - Pyrolysis - Spectroscopy - Spectrum analysis - Spectrum analyzers - Thermogravimetric analysis - Wavelet transforms
Uncontrolled terms:Animal manure - Co-evolution - Design and optimization - Evolution curve - Fourier transform infrared spectra - Fourier transform infrared spectroscopy (FTIR) - Gas product - Pyrolysis reactor - Temperature range
Classification code:822 Food Technology - 921 Mathematics - 921.3 Mathematical Transformations - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 922.2 Mathematical Statistics - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 931.1 Mechanics - 932.2 Nuclear Physics - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 931.3 Atomic and Molecular Physics - 821.5 Agricultural Wastes - 821.2 Agricultural Chemicals - 452.3 Industrial Wastes - 461 Bioengineering and Biology - 471 Marine Science and Oceanography - 539.2.1 Protection Methods - 801 Chemistry - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 804 Chemical Products Generally - 814 Leather and Tanning - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.3969/j.issn.1002-6819.2010.04.044
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 17>
Accession number:20102413003604
Title:Comparison of total volatile basic nitrogen detection models in fishmeal based on electronic nose
Authors:Liu, Hui (1); Niu, Zhiyou (1)
Author affiliation:(1) College of Engineering and Technology, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Niu, Z.
(nzhy@mail.hzau.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:322-326
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:Total volatile basic nitrogen (TVB-N) is one of main characteristics of fishmeal freshness. In order to discuss the feasibility of fishmeal freshness detection based on electronic nose, an electronic nose was developed for the detection of TVB-N of fishmeal. It mainly consists of SnO<inf>2</inf> gas sensors, portable data acquisition device and data acquisition program based on LabVIEW. Different number of storage days of fishmeal were detected by electronic nose and semimicro-kjeldahl determination. The value of gas sensors response were analyzed by 2σ criterion and principal component analysis. Then principal component analysis model, multiple linear regression model and back propagation neural network model of TVB-N mass fraction was created. And they were validated by prediction set. Coefficients of determination, standard error of prediction, maximum relative error and mean relative error between predicted TVB-N and measured one of these models were 0.48, 10.25, 13.62%, 6.06%; 0.59, 9.14, 13.91%, 5.57%; 0.94, 3.64, 6.30%, 1.88%, respectively. And BP neural network was the best method comparing to PCA (principal component analysis) and MLR (multiple linear regression), and MLR was better than PCA. The results showed that it was effective for TVB-N mass fraction rapid detection in fishmeal based on electronic nose.
Number of references:17
Main heading:Principal component analysis
Controlled terms:Artificial organs - Backpropagation - Data flow analysis - Gas detectors - Linear regression - Neural networks - Nitrogen - Sensors
Uncontrolled terms:Basic nitrogen - Electronic NOSE - Fishmeal - Multiple linear regression - Multiple linear regressions
Classification code:922.2 Mathematical Statistics - 914.1 Accidents and Accident Prevention - 804 Chemical Products Generally - 801 Chemistry - 732.2 Control Instrumentation - 943.3 Special Purpose Instruments - 723.4 Artificial Intelligence - 522 Gas Fuels - 503.2 Coal Mining Operations - 462.4 Prosthetics - 461.1 Biomedical Engineering - 723.1 Computer Programming
DOI:10.3969/j.issn.1002-6819.2010.04.055
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 18>
Accession number:20102413003608
Title:Thawing mechanism of high voltage electrostatic field
Authors:Bai, Yaxiang (1); Luan, Zhongqi (1); Li, Xinjun (1); Xu, Jianping (1)
Author affiliation:(1) College of Science, Dalian Ocean University, Dalian 116023, China
Corresponding author:Bai, Y.
(byx0671@163.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:347-350
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:In order to explore the thawing mechanism of high voltage electrostatic field, and improve the thawing technique as well as the thawing efficiency of the high voltage electrostatic field, contrast experiments of thawing rate on ice using a needle electrode, a wire electrode and a plate electrode with different voltages had been evaluated in this study, respectively. At the same time, the contrast experiments of thawing rate on ice using a needle electrode with and without glass enclosures and the effects of the wire's electrode spacing and the distance between the two neighboring wires on thawing rate were investigated. The results indicated high voltage electrostatic field formed by a plate electrode that couldn't improve the thawing rate obviously, while a needle electrode and a wire electrode could improve the thawing rate significantly, the thawing rate of ice with plus glass enclosures was much lower than that without glass enclosures, and the electrode spacing and the distance between the two neighboring wires could effect the thawing rate, and it is thought that corona wind produced by the electrode, which resembles a round jet, impinges and thaws the ice.
Number of references:15
Main heading:Thawing
Controlled terms:Electric fields - Electric furnaces - Electricity - Electrodes - Enclosures - Experiments - Glass - Ice - Needles - Wire
Uncontrolled terms:Contrast experiment - Electrode spacing - High voltage electrostatic field - Needle electrodes - Plate electrodes - Round jets - Wire electrode
Classification code:704.2 Electric Equipment - 714.1 Electron Tubes - 812.3 Glass - 819.6 Textile Mills, Machinery and Equipment - 822.2 Food Processing Operations - 901.3 Engineering Research - 914 Safety Engineering - 704.1 Electric Components - 443 Meteorology - 462.1 Biomedical Equipment, General - 532.3 Electric Metallurgical Furnaces - 535.2 Metal Forming - 619.1 Pipe, Piping and Pipelines - 642.2 Industrial Furnaces and Components - 701.1 Electricity: Basic Concepts and Phenomena
DOI:10.3969/j.issn.1002-6819.2010.04.059
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 19>
Accession number:20102413003565
Title:Comprehensive evaluation of soil fertility by GIS and improved grey relation model
Authors:Yang, Qiyong (1); Yang, Jinsong (1); Yao, Rongjiang (1); Huang, Biao (1); Sun, Weixia (1)
Author affiliation:(1) Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
Corresponding author:Yang, J.
(jsyang@issas.ac.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:100-105
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 a field of Yucheng City, Northeast of Shandong province, as our study area, this paper intends to research for quantitative methods for soil fertility evaluation. Based on the plentiful information that obtained by field-survey, soil sampling and lab analysis, the automatic and quantitative evaluation procedure was realized by adopting the improved Grey Relation Model and supported by GIS techniques. The Grey Relation Model was improved by utilizing analytics hierarchy process and fuzzy math. The area and spatial distribution information of soil fertility grades were acquired, and the results were consistent with local conditions according to field-survey and lab analysis. The approach was feasible and effective in soil fertility evaluation. This research contributes significantly to scientific management and sustainable use of soil resources and provides consults to improve soil quality.
Number of references:22
Main heading:Soil surveys
Controlled terms:Fertilizers - Geographic information systems - Geologic models - Information systems - Soils - System theory
Uncontrolled terms:Comprehensive evaluation - Fuzzy math - Grey relation - Grey systems - Hierarchy process - Lab analysis - Local conditions - Quantitative evaluation - Quantitative method - Scientific management - Shandong province - Soil fertility - Soil quality - Soil resources - Soil sampling - Spatial distribution - Study areas - Sustainable use
Classification code:912.3 Operations Research - 903.3 Information Retrieval and Use - 903.2 Information Dissemination - 821.2 Agricultural Chemicals - 804 Chemical Products Generally - 961 Systems Science - 731.4 System Stability - 483.1 Soils and Soil Mechanics - 481.1 Geology - 461.1 Biomedical Engineering - 406.2 Roads and Streets - 723.3 Database Systems
DOI:10.3969/j.issn.1002-6819.2010.04.016
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 20>
Accession number:20102413003590
Title:Characteristics of biomass pyrolysis in molten salt
Authors:Cai, Tengyue (1); Ji, Dengxiang (1); Yu, Fengwen (1); Ai, Ning (1); Ji, Jianbing (1)
Author affiliation:(1) Research Center of Biomass Energy Engineering, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China
Corresponding author:Ji, J.
(jjb@zjut.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:243-247
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:With the aim of study characteristics of biomass pyrolysis in molten salt, experimental studies on characteristics of biomass pyrolysis in molten salt were carried out in a self-designed reactor. Effects of pyrolysis temperature, FeCl<inf>2</inf> addition quantity in ZnCl<inf>2</inf>-KCl(with mole ratio 7/6) and biomass material on pyrolysis behavior of biomass were investigated. Physical properties of bio-oil were measured, and main compositions of bio-oil were analysised by GC-MS. Pyrolysis process greatly depended on temperature and the yield of bio-oil increased at first and then decreased with the increasing of temperature. While the FeCl<inf>2</inf> addition quantity was 5%, the best pyrolysis temperatures of rice straw was about 525°C, and bio-oil yield relatively high, could reach 18%, respectively. FeCl<inf>2</inf> addition in molten salt could increase bio-oil yield. Water content of bio-oil produced from cellulose was much less than that from rice straw. Bio-oil was a kind of liquid with high water content and low ash, and its density was close to water, and viscosity was bigger than water, pH value was between 2.5 and 3.0. Components of bio-oil were very complexity, while methoxy group was relatively high. Bio-oil need to be refined before application. The research provides a scientific reference for production of bio-oil with molten salt.
Number of references:15
Main heading:Petroleum refining
Controlled terms:Biomass - Fused salts - Pyrolysis - Water content
Uncontrolled terms:Addition quantity - Bio-oil - Bio-oil yield - Biomass materials - Biomass pyrolysis - Experimental studies - FeCl<inf>2</inf> - High water content - Methoxy group - Mole ratio - Molten salt - pH value - Pyrolysis process - Pyrolysis temperature - Rice straws
Classification code:821.5 Agricultural Wastes - 805.1.1 Biochemical Engineering - 804.2 Inorganic Compounds - 802.2 Chemical Reactions - 525.1 Energy Resources and Renewable Energy Issues - 513.1 Petroleum Refining, General - 444 Water Resources
DOI:10.3969/j.issn.1002-6819.2010.04.041
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 21>
Accession number:20102413003551
Title:Water management strategies of Yellow River Irrigation District based on SWAP and MODFLOW models
Authors:Liu, Luguang (1); Cui, Yuanlai (1); Feng, Yuehua (2)
Author affiliation:(1) State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; (2) East Henan Project Administration Bureau, Kaifeng 475004, China
Corresponding author:Liu, L.
(wlhllg814704@gmail.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:9-17
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:Utilization of surface water and groundwater is unreasonable in most of the Yellow River Irrigation Areas, which causes extremely water wasting and grondwater overexploiting problems. In order to allocate water resources reasonably, this paper established soil moisture model and 3D transient groundwater model with SWAP and Visual MODFLOW in Liuyuankou Irrigation System. The models were calibrated and verified with measured data. Irrigation schedules were simulated by SWAP under different irrigation control standards within 2006 to 2007 and the appropriate irrigation control standard was proposed. Based on this proposed standard, Multi-year irrigation schedules and Irrigation water and crop relative yield in different groundwater depth were simulated by SWAP, to get the optimum range of groundwater depth. Exploitation quantity and time were determined by multi-year irrigation schedules. Seven schemes which were drafted according to different crops planting structure and well-canal irrigation ratio were simulated by MODFLOW. The results showed that the proposed strategy, which 30% of irrigation amount from Yellow River in the north pumps groundwater and conveys the saving water to the south, can maintain reasonable groundwater depth and effectively decrease groundwater evaporation losses.
Number of references:14
Main heading:Groundwater resources
Controlled terms:Crops - Evaporation - Geologic models - Groundwater - Irrigation - Rivers - Soil moisture - Standards - Three dimensional - Water management - Water supply
Uncontrolled terms:Canal irrigation - Control standards - Evaporation loss - Groundwater irrigation - Groundwater models - Irrigation area - Irrigation districts - Irrigation schedule - Irrigation systems - Irrigation waters - Measured data - MODFLOW - MODFLOW model - Soil moisture model - Visual MODFLOW - Yellow river
Classification code:902.2 Codes and Standards - 483.1 Soils and Soil Mechanics - 723.5 Computer Applications - 802.3 Chemical Operations - 821.3 Agricultural Methods - 821.4 Agricultural Products - 902.1 Engineering Graphics - 481.1 Geology - 446 Waterworks - 444.2 Groundwater - 444.1 Surface Water - 444 Water Resources - 407.2 Waterways - 446.1 Water Supply Systems
DOI:10.3969/j.issn.1002-6819.2010.04.002
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 22>
Accession number:20102413003596
Title:Denitrification of wastewater with external carbon source of solid wastes in recirculating marine culture system
Authors:Li, Xiuchen (1); Li, Lili (1); Zhang, Guochen (1); Mu, Chenxiao (1); Mu, Gang (1)
Author affiliation:(1) School of Mechanical Engineering, Dalian Ocean University, Dalian 116023, China
Corresponding author:Li, X.
(lxc@dlfu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:275-279
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 recirculating aquaculture system, wastewater characterizes as low C/N ratio and high dissolved oxygen (DO) content, deoxygenating and adding extra organic carbon are necessary for complete denitrification of wastewater. Solid wastes were utilized as extra organic carbon source in the anaerobic hydrolysis and denitrification of wastewater in recirculating marine culture system. After hydrolysis for 10 hours of the wastewater (with volumetric ratio of hydrolytic sludge to solid wastes of 1:1 and at 20°C), the concentrations of NH<inf>4</inf>+-N, NO<inf>3</inf>--N, total chemical oxygen demand (TCOD) and total solid (TS) decreased 62.8%, 43.5%, 24.0% and 13.6%, repectivelly, and DO concentration dropped to 0.2 mg/L. When wastewater, which the volumetric ratio of hydrolytic sludge to solid wastes was kept within 1:1.5-1:2.5, hydrolyzed at 20°C for 6 hours, volatile fatty acid (VFA) concentration and SCOD/TCOD ratio (dissolved organic substance/total organic substance) would increase 32.0%-49.3% and 3.5%-9.1%, respectively. Denitrification of hydrolytic wastewater (with volumetric ratio of anaerobic denitrifying sludge to hydrolytic wastewater of 1:4) could completely carried out at 20°C. The consequent removal rate of NO<inf>3</inf>--N and TCOD in 3 hours reached to 99.6% and 88.3%, respectively. Whereas 36.5% and 75.9% of removal rate for NO<inf>3</inf>--N and TCOD in 10 hours were observed in direct denitrification of marine culture wastewater. It is demonstrated that in recirculating marine culture system complete denitrification is possible by a combining hydrolysis of solid wastes and wastewater.
Number of references:16
Main heading:Biochemical oxygen demand
Controlled terms:Agriculture - Aquaculture - Denitrification - Dissolution - Dissolved oxygen - Fatty acids - Hydrolysis - Organic carbon - Purification - Wastewater
Uncontrolled terms:Anaerobic hydrolysis - C/N ratio - Carbon source - Culture systems - Denitrificationg - Dissolved oxygen contents - DO concentration - Organic substances - Recirculating aquaculture system - Recirculating marine culture - Removal rate - Total solids - Volatile fatty acids - Volumetric ratio
Classification code:461.9 Biology - 471.5 Sea as Source of Minerals and Food - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1 Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 461.7 Health Care - 444 Water Resources - 445 Water Treatment - 452.2 Sewage Treatment - 452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 453 Water Pollution - 454.3 Ecology and Ecosystems
DOI:10.3969/j.issn.1002-6819.2010.04.047
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 23>
Accession number:20102413003582
Title:Three-dimensional reconstruction of maize leaves based on binocular stereovision system
Authors:Wang, Chuanyu (1); Zhao, Ming (2); Yan, Jianhe (1); Zhou, Shunli (1); Zhang, Yinghua (1)
Author affiliation:(1) College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; (2) Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Corresponding author:Zhao, M.
(zhaomingcau@163.net)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:198-202
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:3D structure of maize leaves is an important indicator for evaluating biological characteristics. In order to generate 3D structure of maize leaves rapidly, simply, and accurately, the authors proposed a 3D reconstruction system mainly consisting of two high resolution cameras. The chessboard was chosen to be the plane calibrating template mark, and structured light was applied in stereo matching process to calculate 3D point position. After interpolating leaf 3D points with Cardinal spline and triangulating them into surfaces, a part of leaf 3D structure could be acquired, and then translating and rotating the different parts of maize leaf to form the final complete structure. Experimental results of 3D reconstruction of maize leaves show that this method has the advantage not only of high precision but also of non-contact, non-destructive, and automatic operating process.
Number of references:18
Main heading:Three dimensional
Controlled terms:Computer vision - Image reconstruction - Interpolation - Repair - Stereo vision
Uncontrolled terms:3D reconstruction - 3D registration - 3D Structure - Binocular stereovision - Biological characteristic - Cardinal splines - High precision - High resolution camera - Machine vision - Non destructive - Non-contact - Operating process - Stereo matching - Structured Light - Three-dimensional reconstruction
Classification code:913.5 Maintenance - 902.1 Engineering Graphics - 741.2 Vision - 921.6 Numerical Methods - 741 Light, Optics and Optical Devices - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 731.6 Robot Applications
DOI:10.3969/j.issn.1002-6819.2010.04.033
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 24>
Accession number:20102413003581
Title:Assessment of MODIS LAI product accuracy based on the PROSAIL model, TM and field measurements
Authors:Yang, Fei (1); Sun, Jiulin (1); Zhang, Bai (2); Yao, Zuofang (2); Wang, Zongming (2); Wang, Juanle (1); Yue, Xiafang (1)
Author affiliation:(1) Institute of Geographic Sciences and Natural Resources Research of Chinese Academy of Sciences, State Key Laboratory of Resources and Environmental Information System, Beijing 100101, China; (2) Northeast Institute of Geography and Agroecology of Chinese Academy of Sciences, Changchun 130012, China; (3) Graduate University of Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Sun, J.
(sunjl@igsnrr.ac.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:192-197
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:By comparing the MODIS LAI to field measurement and retrieved LAI from the PROSAIL physical model using TM image, accuracy of the MODIS LAI product for corn crops in Jilin Province was assessed, which could provide the basis of evaluating and using MODIS products accurately. The results show that the accuracy of the MODIS LAI product varies largely with the crop growth stages and the vegetation types. In addition, the mixed pixels were likely causing underestimation of the MODIS product for corn crops. The differences between MODIS and field measured LAI varies with different years and growth periods. After grain-filling stage, MODIS LAI values were apparently lower than estimated LAI by TM image and PROSAIL physical model. The LAI of corn crops had been underestimated by MODIS about 33%-53% and about 30%-69%, as compared with the field measurements and simulated LAI from TM, respectively. As a whole, MODIS LAI product of corn crop has much bias compared with actual LAI value, it is necessary for the validation of corn crop MODIS LAI product accuracy. This study can provide the scientific reference for the use of MODIS LAI product, and it can also be used as an approach for validating the MODIS LAI product generated by improved algorithms.
Number of references:22
Main heading:Radiometers
Controlled terms:Channel capacity - Crops - Electric field measurement - Image quality
Uncontrolled terms:Accuracy assessment - Crop growth - Field measurement - Grain filling - Growth period - Improved algorithm - Jilin Province - LAI - Mixed pixel - MODIS LAI - Physical model - TM image - Vegetation type
Classification code:716.1 Information Theory and Signal Processing - 741 Light, Optics and Optical Devices - 821.4 Agricultural Products - 942.2 Electric Variables Measurements - 944.7 Radiation Measuring Instruments
DOI:10.3969/j.issn.1002-6819.2010.04.032
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 25>
Accession number:20102413003553
Title:Experiment and application of simple direct-reading water measuring device for irrigation canals
Authors:Cai, Shouhua (1); Zhao, Jianghui (1); Wang, Jie (1); Yuan, Yao (1)
Author affiliation:(1) College of Water Conservancy 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:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:25-30
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:Water measuring devices easy to apply widely should have some particular strengths such as satisfactory accuracy, easy observation, and low cost. Towards this goal, a simple direct-reading water measuring device suit to irrigation canals was developed. It is composed of one or two baffles, an ordinary water meter and a water meter well. It is concluded that the ratio of canal discharge to water meter discharge is a constant in both states of free flow and drowned flow. Laboratory experimental results obtained in U-shaped canal also showed that the ratio M approximates to a constant in the two flow states, and the maximum relative errors were 3.60% and 0.45%, respectively. Since 2008, the direct-reading water measuring devices have been installed and operated satisfactorily in Yanyun Irrigation District and Zhuluoba Irrigation District, Jiangsu Province. This device has some characteristics such as simple structure, low cost, convenient measurement, and satisfactory accuracy. It can be used for small irrigation canals.
Number of references:17
Main heading:Irrigation canals
Controlled terms:Flow measurement - Flow measuring instruments - Flowmeters - Hydraulic structures - Irrigation - Photovoltaic effects - Water meters - Water supply
Uncontrolled terms:Baffles - Direct-reading - Flow state - Free flow - Irrigation districts - Jiangsu province - Low costs - Maximum relative errors - Measuring device - Simple structures - U-shaped
Classification code:943.3 Special Purpose Instruments - 943.2 Mechanical Variables Measurements - 943.1 Mechanical Instruments - 821.3 Agricultural Methods - 741.1 Light/Optics - 712.1 Semiconducting Materials - 701.1 Electricity: Basic Concepts and Phenomena - 631.1 Fluid Flow, General - 611 Hydroelectric and Tidal Power Plants - 446.2 Related Hydraulic Structures - 446.1 Water Supply Systems - 441 Dams and Reservoirs; Hydro Development - 407.2 Waterways
DOI:10.3969/j.issn.1002-6819.2010.04.004
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 26>
Accession number:20102413003585
Title:Construction of digital breeding platform for breeding pig
Authors:Zhu, Jun (1); Ma, Shuoshi (1); Bi, Yuge (1); Cui, Hongmei (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
Corresponding author:Ma, S.
(mashuoshi@imau.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:215-219
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:Large scale pig industry has taken rapid progress at present in China, but the breeding facilities and technical measures are still more backward than the developed country. In order to improve the benefits of pig industry, a kind of digital breeding platform was constructed by using the advanced technical measures. The whole platform including the auto-feed conveyor and precision feeding system, intelligent regulation system of pig house environment, management system of pig information, visualization monitoring system of the pig house and the network supervision system of the whole pig-breeding process were realized by taking advantage of several digitization technologies such as RFID (radio frequency identification), intelligent controlling and network transmission technologies. At the same time, its corresponding constructing methods of every subsystem were illustrated in details in this paper. As a demonstrating engineering in Science and technology Park of Inner Mongolia Autonomous Region, it will play a significant role in applying the digitization technologies into all pig houses and further developing the digitization pig industry.
Number of references:25
Main heading:Digital control systems
Controlled terms:Agriculture - Feeding - Houses - Radio broadcasting - Radio frequency identification (RFID) - Radio transmission - Technology - Visualization
Uncontrolled terms:Breeding - Breeding pig - Developed countries - Feeding system - Inner Mongolia - Management systems - Monitoring system - Network transmission - Pig house - Pig industry - Science and technology parks - Supervision systems - Technical measures
Classification code:901 Engineering Profession - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 731.1 Control Systems - 902.1 Engineering Graphics - 722.4 Digital Computers and Systems - 691.2 Materials Handling Methods - 402.3 Residences - 716.3 Radio Systems and Equipment
DOI:10.3969/j.issn.1002-6819.2010.04.036
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 27>
Accession number:20102413003603
Title:Determination of egg freshness during shelf life with electronic nose
Authors:Liu, Ming (1); Pan, Leiqing (1); Tu, Kang (1); Liu, Peng (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:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:317-321
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 feasibility of determining egg freshness by their generated deteriorate volatile, a PEN3 electronic nose (E-nose) was used to detect the quality of 'Roma' hen eggs through their shelf-life at 20°C, 70% RH in this study. The corresponding relationship between the shelf-life and grade of eggs was determined by Haugh unit. Firstly, the values of sensor response of the 0 and 36 days of egg liquid and whole egg were compared. The alkanes, ammonium, alcohol were the main deteriorate volatile which changed during the storage. Then the sample response signals were analyzed by principal components analysis (PCA) and linear discrimination analysis (LDA) to discriminate the different freshness during shelf-life, and the latter method proved better results than the former one. A further study of loading analysis and multiple linear regression selected the S1, S2, S3, S5, S6, S8 sensors of the E-nose in the research. The results indicated that it was possible to discrimination of different shelf-life and quality of eggs by E-nose, and provided theoretical and experimental basis for monitoring the freshness of eggs.
Number of references:16
Main heading:Principal component analysis
Controlled terms:Ammonium compounds - Artificial organs - Linear regression - Loading - Nondestructive examination - Paraffins - Sensors
Uncontrolled terms:Electronic nose - Electronic nose (e-nose) - Freshness - Hen egg - Linear discrimination analysis - Loading analysis - Multiple linear regressions - Principal components analysis - Response signal - Sensor response - Shelf life
Classification code:922.2 Mathematical Statistics - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 801 Chemistry - 732.2 Control Instrumentation - 691.2 Materials Handling Methods - 672 Naval Vessels - 663.1 Heavy Duty Motor Vehicles - 513.3 Petroleum Products - 462.4 Prosthetics - 423.2 Test Methods - 422.2 Test Methods - 421 Strength of Building Materials; Mechanical Properties
DOI:10.3969/j.issn.1002-6819.2010.04.054
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 28>
Accession number:20102413003575
Title:Integrated multi-sensor hardware system for soil information measurement
Authors:Ma, Ruijun (1); Short, Michael (3); Lobsey, Craig (3); McBratney, Alex (3); Whelan, Brett (3); Minasny, Budiman (3); Sun, Guangyong (4)
Author affiliation:(1) College of Engineering, South China Agricultural University, Guangzhou 510642, China; (2) Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (3) Australian Centre for Precision Agriculture, Faculty of Agriculture, Food and Natural Resources, The University of Sydney, NSW 2006, Australia; (4) State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, China
Corresponding author:Ma, R.
(maruijun_mrj@scau.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:156-161
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Soil plays an important role in crop growth and soil information is necessary for making crop management decisions. Traditional soil sampling techniques are time-consuming and costly, especially for large survey areas and laboratory analysis. Currently a variety of on-the-go soil sensor techniques are available that can provide high-resolution digital soil maps but these commercial sensors are generally used individually. This paper presented an integrated hardware system by multi soil sensors, including Gamma Ray Spectrometer, Geonics EM38, Geonics EM31, Veris 3100 and Veris pH, which could measure different soil parameters simultaneously and avoided the vehicle numerous trips into the field and minimize soil compaction. The complementary data for the soil sensors could further enhance data-based decision-making and potentially offer new possibilities for precision agriculture. Issues with the system that need further research in the future were also discussed in the paper. The system is appropriate for the measurements of soil parameters at a fine spatial scale for large areas.
Number of references:11
Main heading:Soil surveys
Controlled terms:Crops - Decision making - Gamma rays - Information theory - Sensors - Soil mechanics - Soils
Uncontrolled terms:Commercial sensors - Complementary data - Crop growth - Crop managements - Hardware system - High resolution - Information measurement - Laboratory analysis - Multi sensor - On-the-go soil sensors - Precision Agriculture - Soil compaction - Soil maps - Soil parameters - Soil sampling - Soil sensors - Spatial scale - Survey area
Classification code:932.1 High Energy Physics - 931.3 Atomic and Molecular Physics - 912.2 Management - 821.4 Agricultural Products - 801 Chemistry - 732.2 Control Instrumentation - 716.1 Information Theory and Signal Processing - 483.1 Soils and Soil Mechanics - 406.2 Roads and Streets
DOI:10.3969/j.issn.1002-6819.2010.04.026
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 29>
Accession number:20102413003584
Title:Design and realization of agricultural products circulation traceability system based on Linux embedded technology
Authors:Sun, Chuanheng (1); Liu, Xuexin (2); Ding, Yongjun (1); Li, Wenyong (2); Li, Daoliang (1); Yang, Xingting (2)
Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (2) National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China; (3) Key Laboratory for Information Technologies in Agriculture, Ministry of Agriculture, Beijing 100097, China
Corresponding author:Yang, X.
(yangxt@nercita.org.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:208-214
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:Circulation of agricultural products is the key stage of the whole product quality traceability system. Traditional methods such as supervision credentials, supervision ticket and so on being used to establish agricultural product traceability system were greatly difficult in operation. In this paper, the method of ″hardware control″ was used to construct the agricultural product circulation quality traceability system based on the Linux embedded technology. This system was designed based on the credibility of the control flow of agricultural technology, by using the multi-function embedded special equipment as the inspection tool, and the product circulation traceability system for business support. The multi-function circulation special purpose equipment integrated the function of radio frequency identification (RFID) status recognition, the two-dimensional bar code printing, wireless data uploading, and the system provided product admittance, market spot-check and product traceability service through the touching screen and network. The research established the operable model of agricultural product circulation traceability system and had a good prospect of application and extension.
Number of references:17
Main heading:Quality control
Controlled terms:Agricultural products - Bar codes - Computer operating systems - Customer satisfaction - Embedded systems - Radio frequency identification (RFID) - Radio waves - Total quality management
Uncontrolled terms:Business support - Chinese-sensible barcode - Circulation - Control flows - Embedded technology - Hardware control - Inspection tools - Multi-functions - Product quality - Product traceability - Status recognition - Traceability systems - Wireless data
Classification code:922.2 Mathematical Statistics - 913.3 Quality Assurance and Control - 912.2 Management - 912 Industrial Engineering and Management - 821.4 Agricultural Products - 731.1 Control Systems - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 716.3 Radio Systems and Equipment - 711 Electromagnetic Waves
DOI:10.3969/j.issn.1002-6819.2010.04.035
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 30>
Accession number:20102413003572
Title:Fault diagnosis of engine based on exhaust density analysis and support vector machines
Authors:Li, Zengfang (1); Jin, Chunhua (2); He, Yong (3)
Author affiliation:(1) Department of Electromechanical Engineering, Zhejiang Water Conservancy and Hydropower College, Hangzhou 310018, China; (2) Faculty of Life Science and Biotechnology, Ningbo University, Ningbo 315211, China; (3) Department of Bio-System Engineering, Zhejiang University, Hangzhou 310029, China
Corresponding author:He, Y.
(yhe@zju.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:143-146
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 realize real-time fault diagnosis, a method for engine fault diagnosis based on exhaust density analysis and support vector machines (SVM) was put forward. Under typical fault working conditions of the engine, firstly, the data of exhaust densities of HC, CO, CO<inf>2</inf>, O<inf>2</inf>, NO<inf>x</inf> were gotten by using NHA-500 exhaust density analysis instrument. Then the data were normalized, and feature vectors were extracted from the data as learning samples and then used in designing and training multielement classifier based on support vector machines for fault pattern recognition. Experimental results showed that error correction coding classification method based on support vector machines was better in classification ability and had stronger anti-jamming capability than neural networks. In the case of small samples, accuracy rate of this fault diagnostic method could reach 98.5%. The result means that the method can effectively describe the complex relationship between exhaust compents changes and fault states.
Number of references:15
Main heading:Fault detection
Controlled terms:Engines - Failure analysis - Neural networks - Pattern recognition - Quality assurance - Support vector machines - Vectors
Uncontrolled terms:Accuracy rate - Anti-jamming capability - Classification ability - Classification methods - Complex relationships - Error correction coding - Exhaust emission - Fault diagnosis - Fault diagnostic methods - Fault patterns - Feature vectors - Learning samples - Multi-element - Real-time fault diagnosis - Small samples - Typical faults - Working conditions
Classification code:723.5 Computer Applications - 741.1 Light/Optics - 751.1 Acoustic Waves - 723.4 Artificial Intelligence - 913.3 Quality Assurance and Control - 921.1 Algebra - 943.2 Mechanical Variables Measurements - 921 Mathematics - 723 Computer Software, Data Handling and Applications - 422 Strength of Building Materials; Test Equipment and Methods - 461.1 Biomedical Engineering - 612 Engines - 421 Strength of Building Materials; Mechanical Properties - 617.3 Steam Engines - 706.2 Electric Power Lines and Equipment - 716 Telecommunication; Radar, Radio and Television - 654.2 Rocket Engines
DOI:10.3969/j.issn.1002-6819.2010.04.023
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 31>
Accession number:20102413003612
Title:Effects of chitosan-beewax composite coating on physiology and quality of frozen yellow-flesh peach
Authors:Deng, Yun (1); Zhu, Liwei (2); Luo, Wen (2)
Author affiliation:(1) Shanghai Jiao Tong University-Bor Luh Food Safety Center, Shanghai Jiao Tong University, Shanghai 200240, China; (2) School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
Corresponding author:Deng, Y.
(y_deng@sjtu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:368-374
Language:English
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 extend the shelf life of frozen fruits, the effects of chitosan or chitosan-beewax composite coatings on physiology and quality of frozen yellow-flesh peach slices (Prunus persicu L. Batsch.) were investigated during 60 days of storage at -20°C. Polyphenol oxidase (PPO) activity, membrane permeability, firmness, color, vitamin C, drip loss and soluble solids of the frozen products were evaluated. The chitosan and the chitosan-beewax composite coatings exhibited a positive effect on vitamin C retention, delayed the increases in PPO activity and relative electrolyte rates, reduced browning and drip loss compared with the uncoated control. The chitosan-beewax composite coating seems to be more promising for reduction of losses of drip, firmness and vitamin C.
Number of references:29
Main heading:Composite coatings
Controlled terms:Agricultural products - Chitin - Chitosan - Food additives - Physical properties
Uncontrolled terms:Beewax - Drip loss - Edible coating - Membrane permeability - Polyphenol oxidase - Positive effects - Shelf life - Soluble solids - Vitamin C - Vitamin C retention
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 822.3 Food Products - 821.4 Agricultural Products - 813.2 Coating Materials - 804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals
DOI:10.3969/j.issn.1002-6819.2010.04.063
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 32>
Accession number:20102413003595
Title:Process optimization of biodiesel production through ultrasonic enhanced transesterification
Authors:Ren, Qinggong (1); Yan, Jie (2); Qiu, Taiqiu (3)
Author affiliation:(1) School of Chemistry and Chemical Engineering, Jiangsu Polytechnic University, Changzhou 213164, China; (2) College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China; (3) College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
Corresponding author:Qiu, T.
(tqqiu@scut.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:269-274
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 obtain the optimal condition for biodiesel production from ultrasonic enhanced transesterification and provide reference for industrialization of biodiesel, the effects of density of ultrasonic power, reaction temperature, amount of catalyst and molar ratio of methanol to oil on the ultrasonic enhanced transesterification catalyzed by potassium hydroxide were investigated, and the parameters for biodiesel production by using response surface method (RSM) were further optimized. The results showed that under the optimal condition i.e density of ultrasonic power 54.7 W/L, reaction temperature 34°C, amount of catalyst 1.3%, molar ratio of methanol to soybean oil 6:1, the content of methy-ester in transesterification was 99.68%, meanwhile, the experimental value of the content of methy-ester was 99.56%. The optimal experimental result of RSM is suitable for biodiesel production technologies based on transesterification catalyzed by alkali, and it can be used to predict the content of methy-ester in different conditions of transesterification catalyzed by alkali.
Number of references:16
Main heading:Potassium hydroxide
Controlled terms:Biodiesel - Catalysts - Esterification - Esters - Methanol - Optimization - Potassium - Sonochemistry - Surface properties - Transesterification - Ultrasonics
Uncontrolled terms:Biodiesel production - Experimental values - Molar ratio - Optimal conditions - Process optimization - Reaction temperature - Response surface method - Soybean oil - Ultrasonic power
Classification code:804 Chemical Products Generally - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 951 Materials Science - 821.2 Agricultural Chemicals - 921.5 Optimization Techniques - 931.2 Physical Properties of Gases, Liquids and Solids - 822.2 Food Processing Operations - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 523 Liquid Fuels - 549.1 Alkali Metals - 751.1 Acoustic Waves - 753 Ultrasonics and Applications - 753.1 Ultrasonic Waves - 801.1 Chemistry, General
DOI:10.3969/j.issn.1002-6819.2010.04.046
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 33>
Accession number:20102413003552
Title:Effects of lateral depths on alternative placements of tensiometers used for drip irrigation scheduling
Authors:Liu, Yuchun (1); Li, Jiusheng (1)
Author affiliation:(1) China Institute of Water Resources and Hydropower Research, Beijing 100048, China; (2) College of Urban and Rural Construction, Hebei Agricultural University, Baoding 071001, China
Corresponding author:Li, J.
(lijs@iwhr.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:18-24
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 temporal and spatial distribution of soil matrix potential (SMP) in the root zone of drip irrigated tomato was measured to investigate the optimal placements of tensiometers used for scheduling drip irrigation under various lateral depths. The experiments were conducted on a sandy loam soil in a solar-heated greenhouse during the growing seasons of 2006 and 2007. Three lateral depths of 0, 15 and 30 cm were used. The observations of SMP were conducted in the soil profiles of 0, 15 and 30 cm from the drip tape at depths of 10, 20, 30, 50, 70 and 90 cm. The temporal and spatial distribution of SMP in tomato root zone and the correlation between tomato evaportranspiration (ETa) and SMP variations were analyzed. The results showed that the variation of SMP among the soil profiles of 0, 15 and 30 cm from drip tape was insignificant, and the horizontal distance of tensiometers to drip tape had little effect on the correlation between tomato ETa and SMP variations. Lateral depths significantly influenced SMP from 20 to 70 cm soil layer and there were obvious effects of tensiometer depth on the correlation between tomato ETa and SMP variations. The suitable buried depths of tensiometers used for drip irrigation scheduling of tomato should be determined based on the buried depth of drip tape. The experiments recommended that one tensiometer should be installed just below a drip tape at depth of 30, 50 and 70 cm for the lateral depth of 0, 15 and 30 cm, respectively.
Number of references:26
Main heading:Soil surveys
Controlled terms:Fruits - Irrigation - Moisture determination - Scheduling - Size distribution - Soil moisture
Uncontrolled terms:Buried depth - Drip irrigation - Evaportranspiration - Growing season - Irrigation laterals - Optimal placements - Root zone - Sandy loam soils - Soil layer - Soil matrices - Soil profiles - Solar-heated greenhouse - Temporal and spatial distribution - Tomato roots
Classification code:944.2 Moisture Measurements - 933.1 Crystalline Solids - 931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 912.2 Management - 821.4 Agricultural Products - 821.3 Agricultural Methods - 531.2 Metallography - 483.1 Soils and Soil Mechanics - 423 Non Mechanical Properties and Tests of Building Materials - 406.2 Roads and Streets
DOI:10.3969/j.issn.1002-6819.2010.04.003
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 34>
Accession number:20102413003606
Title:Analysis and design of information traceability system for pork production supply chain
Authors:Zhang, Ke (1); Chai, Yi (1); Weng, Daolei (1); Zhai, Ruling (1)
Author affiliation:(1) College of Automation, Chongqing University, Chongqing 400030, China; (2) School of Engineering, University of Guelph, Ontario N1G 2 W1, Canada
Corresponding author:Chai, Y.
(chaiyi@cqu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:332-339
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:Aiming at the existing requirements of animal husbandry production quality safe in China, architecture of pork production information traceability system was studied in this paper. Based on European Article Numbering (EAN) and international logistics information label, requirements analysis and architecture analysis of pork production information traceability were presented. A whole process traceability system that could be applied in pork production with Chinese situation was created. The contents of traceability information and individual marking were analyzed. On this basis, the style and model of logistics unit mark and label that used in pork production supply chain were designed. The structure of hardware and software were presented. With the structure, a pre-warning system was developed, which could be applicable to the pork production traceability system. The instance analysis shows that the proposed traceability system could effectively identify the security problem in pork production, and issue the recall information. Based on the integrated and robust traceability data, the logistics information and production streams were systematically contracted. Every supply chain member and consumer could acquire the complete pork production information in this system. The system for pork production supply chain performed well and effectively.
Number of references:24
Main heading:Supply chains
Controlled terms:Agriculture - Design - Information systems - International trade - Knowledge management - Labels - Management information systems - Meats - Supply chain management
Uncontrolled terms:Analysis and design - Animal husbandry - Architecture analysis - Architecture designs - Hardware and software - Logistics information - Pork production - Production quality - Production streams - Requirements analysis - Security problems - Traceability information - Traceability systems - Warning systems - Whole process
Classification code:903.2 Information Dissemination - 903.3 Information Retrieval and Use - 911.3 Inventory Control - 911.4 Marketing - 912 Industrial Engineering and Management - 912.2 Management - 913 Production Planning and Control; Manufacturing - 902.3 Legal Aspects - 408 Structural Design - 694.2 Packaging Materials - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 822.3 Food Products - 902.1 Engineering Graphics
DOI:10.3969/j.issn.1002-6819.2010.04.057
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 35>
Accession number:20102413003600
Title:Spatio-temporal allocation of general land-use planning index
Authors:Zheng, Xinqi (1); Zhao, Lu (1); Hu, Yecui (1); Li, Ning (3)
Author affiliation:(1) Department of Land Science and Technology, China University of Geosciences, Beijing 100083, China; (2) Land Resources Information Development Research Laboratory, Beijing 100083, China; (3) Lanshan Rural Cooperative Bank, Linyi 276004, China
Corresponding author:Zheng, X.
(zxqsd@126.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:297-305
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:One of the key tasks in general land-use planning is to allocate land use quantificationally on temporal scale and spatially in specific location. In order to achieve this goal, planners need to have an idea about the quantitative land demands in different development scenarios, and temporal and spatial characteristics of each planning which could assist them carry out the plan spatially and optimize the local land use. However, there is little research on the spatio-temporal allocation of general land-use planning index. To address this issue, this study coupled GIS, system dynamic model and CLUE-S model, and applied it to Changqing District, Jin'an City, Shandong Province, China. The results showed that the coupled model took the advantages of system dynamic model in scenario analysis and temporal simulation of local land use, and CLUE-S in spatial allocation of local land use. The model could provide the necessary information for planners and decision-makers, and a successful paradigm to land-use planning index in the angle of spatio-temporal combination.
Number of references:29
Main heading:Information use
Controlled terms:Computer simulation - Dynamic models - Geographic information systems - Information systems - Land use - Planning - Regional planning
Uncontrolled terms:CLUE-S model - Coupled models - Decision makers - Development scenarios - Land-use planning - Little research - Scenario analysis - Shandong province - Spatial allocation - Spatial characteristics - Spatio-temporal - Specific location - System dynamic - System dynamic models - Temporal scale - Temporal simulation
Classification code:921 Mathematics - 912.2 Management - 903.3 Information Retrieval and Use - 903.2 Information Dissemination - 723.5 Computer Applications - 723.3 Database Systems - 442.2 Land Reclamation - 403.2 Regional Planning and Development - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2010.04.051
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 36>
Accession number:20102413003605
Title:Determination of chestnuts grading based on machine vision
Authors:Zhan, Hui (1); Li, Xiaoyu (1); Wang, Wei (1); Wang, Chenglong (1); Zhou, Zhu (1); Huang, Yi (1)
Author affiliation:(1) College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Li, X.
(lixiaoyu@mail.hzau.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:327-331
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 realize grading of eligible and defected chestnut by using machine vision, a classification method of chestnut was developed based on BP-ANN and image feature of chestnut. In this experiment, Luotian chestnuts were used as experimental targets. Principal component analysis (PCA) was implemented on these feature variables from eight eigen values including color parameters and veins characteristics parameters etc., and principal components (PCs) vectors were extracted as the inputs of pattern recognition. Grading models were built by BP neural network. The test result showed that when the number of principal component factor was three and the number of nodes of hidden layer was twelve, the discriminating rate was as high as 100% in training set, and 91.67% in prediction set. The overall results shows that it is feasible to discriminate chestnut quality with machine vision.
Number of references:19
Main heading:Principal component analysis
Controlled terms:Agricultural machinery - Computer vision - Fruits - Imaging systems - Neural networks
Uncontrolled terms:BP neural networks - Characteristics parameters - Chestnut - Classification methods - Color parameter - Eigen-value - Feature variable - Grading model - Hidden layers - Image features - Machine vision - On-machines - Principal Components - Test results - Training sets
Classification code:922.2 Mathematical Statistics - 821.4 Agricultural Products - 821.1 Agricultural Machinery and Equipment - 746 Imaging Techniques - 741.2 Vision - 741 Light, Optics and Optical Devices - 731.6 Robot Applications - 723.5 Computer Applications - 723.4 Artificial Intelligence - 723.2 Data Processing and Image Processing - 461.1 Biomedical Engineering
DOI:10.3969/j.issn.1002-6819.2010.04.056
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 37>
Accession number:20102413003589
Title:Numerical simulation and experimental verification of heat transfer through multi-layer covering of greenhouse
Authors:Zhang, Yi (1); Ma, Chengwei (1); Liu, Yiwei (1); Han, Jingjing (1)
Author affiliation:(1) Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture of the People's Republic of China, China Agriculture University, Beijing 100083, China
Corresponding author:Ma, C.
(macwbs@cau.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:237-242
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 grasp the properties of heat transfer and keep various multi-layer covering at different conditions in greenhouse exactly, a model of heat transfer through greenhouse multi-layer covering was developed in this study. A computer program was designed for simulating its heat transfer process, calculating heat transfer capacity and heat transfer coefficient of covering. Heat transfer flux density and heat transfer coefficient of covering could be simulated and forecasted by using this model, based on the thermophysical characteristics of covering, the construct parameters of greenhouse and the environment conditions, etc.. The measurement results indicated that the simulated values of heat transfer flux density through multi-layer were in accordance with the values from experiments. This model is simple and accurate for quantitative analysis of heat transfer through multi-layer covering of greenhouse.
Number of references:24
Main heading:Heat exchangers
Controlled terms:Computer simulation - Greenhouses - Heat transfer coefficients - Pesticide effects
Uncontrolled terms:Computer program - Environment conditions - Experimental verification - Heat transfer process - Measurement results - Multi-layer covering - Numerical simulation - Quantitative analysis - Thermophysical characteristics
Classification code:821.6 Farm Buildings and Other Structures - 821.2 Agricultural Chemicals - 803 Chemical Agents and Basic Industrial Chemicals - 723.5 Computer Applications - 641.2 Heat Transfer - 616.1 Heat Exchange Equipment and Components - 454.2 Environmental Impact and Protection - 453.1 Water Pollution Sources - 402.1 Industrial and Agricultural Buildings
DOI:10.3969/j.issn.1002-6819.2010.04.040
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 38>
Accession number:20102413003591
Title:Optimization of pretreatment conditions for corn cob with alkali liquor
Authors:Qin, Weijun (1); Chen, Yefu (1); Zhao, Huanying (1); Wang, Ruisheng (1); Xiao, Dongguang (1)
Author affiliation:(1) College of Bioengineering, Tianjin University of Science and Technology, Tianjin 300457, China
Corresponding author:Chen, Y.
(yfchen@tust.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:248-253
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:Alkali liquor pretreatment conditions for lignocellulosic corn cob were optimized to remove lignin and improve the enzymatic hydrolysis yield of hemicellulose and cellulose. By multilevel of single-factor test and orthogonal test methods, the results for the optimal pretreatment conditions were as follows : reaction time 12 h, temperature 70°C, liquid to solid ratio 23:1, aqueous ammonia concentration 2.5%(W/V), hydrogen peroxide 0.6%, sodium silicate 5%, magnesium sulfate 0.05% in reaction mixture. Under this optimal condition, the residue yield of corn cob was 59.74%, the remaining rates of hemicellulose, cellulose, and lignin were 56.60%, 86.20%, 11.83%, respectively, in corn cob. The enzymatic hydrolysis yield of hemicellulose, cellulose, total of corn cob residue was 41.36%, 88.09%, 69.21%, respectively, by two steps hydrolysis (xylanase and cellulose). Compared with the untreated straw, the enzymatic hydrolysis yield increased 39.18%, 40.89%, 44.88%, respectively. The enzymatic digestibility is related with the removal of lignin and hemicelluloses.
Number of references:24
Main heading:Enzymatic hydrolysis
Controlled terms:Cellulose - Hydrogen peroxide - Lignin - Magnesium - Optimization - Silicates - Sodium - Sodium sulfate
Uncontrolled terms:Alkali liquor pretreatment - Aqueous ammonia - Corn cob - Enzymatic digestibility - Hemicellulose - Liquid to solid ratio - Magnesium sulfate - Optimal conditions - Orthogonal test method - Pre-Treatment - Pretreatment conditions - Reaction mixture - Reaction time - Sodium silicate - Xylanases
Classification code:921.5 Optimization Techniques - 815.1.1 Organic Polymers - 812 Ceramics, Refractories and Glass - 811.3 Cellulose, Lignin and Derivatives - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 802.2 Chemical Reactions - 801.2 Biochemistry - 549.2 Alkaline Earth Metals - 549.1 Alkali Metals - 542.2 Magnesium and Alloys - 482.2 Minerals - 414 Masonry Materials
DOI:10.3969/j.issn.1002-6819.2010.04.042
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 39>
Accession number:20102413003586
Title:Development and application of assistant system for diagnosing chicken diseases based on smart mobile phones
Authors:Song, Weiping (1); Xiong, Benhai (2); Sun, Zhengjun (1); Mo, Hongjian (3); Su, Qingpu (4)
Author affiliation:(1) College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (2) Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (3) Beijing Aweb Science and Technology Ltd., Co., Beijing 100080, China; (4) Beijing Younger Technology Development Ltd., Co., Beijing 100080, China
Corresponding author:Sun, Z.
(zjsun@ht.rol.cn.net)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:220-226
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:Currently, the chicken disease diagnosis system based on desk-top computers has displayed timely inconvenience and poor coverage in operation. To meet the demands of medium or small-scale poultry farms and grass-root veterinarians, a chicken disease diagnosis and health management system based on windows mobile 5.0 working under Net 2005 and SQL Sever 2005 CE was developed. Object-oriented knowledge bases were established and credibility factors (CF) were also introduced in the inference mechanism. The system could diagnose more than 70 common chicken diseases and provide suggestions on appropriate veterinary drugs and treatment with 3 options: obvious symptoms, suspect diseases and multi-symptom combinations. The system performance test showed that diagnostic accuracy of the assistant system based on smart mobile phones was to 88.3%. The windows mobile system was convenient to operate and easy to put into use. With the integration of TD-SCMA and Internet, the system can definitely foresee a wide application in the countryside because it can be kept up-dated in time and improve its accuracy in diagnosis.
Number of references:22
Main heading:Diagnosis
Controlled terms:Computer graphics - Disease control - Intelligent control - Mobile devices - Mobile phones - Telephone - Telephone sets
Uncontrolled terms:Chicken - Diagnostic accuracy - Disease diagnosis - Health management systems - Inference mechanism - Knowledge basis - Mobile systems - Object oriented - Performance tests - Poultry farms - Smart phones - SQL Sever - System-based - Veterinary drugs - Windows Mobile 5.0
Classification code:731.1 Control Systems - 723.5 Computer Applications - 723.4.1 Expert Systems - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 718.1 Telephone Systems and Equipment - 461.7 Health Care - 461.6 Medicine and Pharmacology - 716 Telecommunication; Radar, Radio and Television
DOI:10.3969/j.issn.1002-6819.2010.04.037
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 40>
Accession number:20102413003576
Title:Pollution assessment of heavy metals based on double-layer BPNN and GIS visualization
Authors:Wang, Fen (1); Peng, Guozhao (1); Jiang, Jin'gang (3); Kong, Weijuan (4)
Author affiliation:(1) Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610071, China; (2) Wenjiang district Meteorological Bureau, Chengdu 611130, China; (3) College of Resources and Environmental Science, Chengdu University of Information Technology, Chengdu 610225, China; (4) Department of Geography Information Science, Nanjing University, Nanjing 210093, China
Corresponding author:Peng, G.
(pgzhao567@126.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:162-168
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 assess the extent of heavy metals contamination resulting from geo-authentic productive area of Ligusticum chuanxiong Hort. in Sichuan province, fifteen soil samples were collected and analyzed for the content of the heavy metals. The assessment of heavy metals contamination in soils was performed by double-layer back propagation neutral network and GIS spatial analysis technology. The results of assessment indicated that most of research area was contaminated lightly. The areas of Chouzhou, Dujiangyan and Pengzhou were polluted in middling extent. The way of double-layer BPNN and GIS could carry out a relatively accurate spatial analysis to even a small group of data, reduce the cost of sampling under the principia of a stated analysis precision and get higher accuracy spatial distribution than the single-factor index method.
Number of references:19
Main heading:Soil pollution
Controlled terms:Backpropagation - Cost reduction - Data flow analysis - Geographic information systems - Heavy metals - Metal analysis - Metals - Soils - Visualization
Uncontrolled terms:Double layers - Double-layer - Ligusticum chuanxiong Hort - Neutral network - Pollution assessment
Classification code:912.2 Management - 911.2 Industrial Economics - 903.3 Information Retrieval and Use - 902.1 Engineering Graphics - 801 Chemistry - 723.4 Artificial Intelligence - 723.3 Database Systems - 723.1 Computer Programming - 531 Metallurgy and Metallography - 483.1 Soils and Soil Mechanics - 454.2 Environmental Impact and Protection
DOI:10.3969/j.issn.1002-6819.2010.04.027
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 41>
Accession number:20102413003564
Title:Impact of summer irrigation on phosphorus transportation in Hetao Agricultural Irrigation Area, Inner Mongolia
Authors:Wang, Yunhui (1); Zhang, Xuan (1); Ouyang, Wei (1); Hao, Fanghua (1); Wang, Wei (1)
Author affiliation:(1) State Key Laboratory for Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
Corresponding author:Hao, F.
(fanghua@bnu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:93-99
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:Phosphorus, as one of the essential elements for crops, has direct contribution to water eutrophication. During summer irrigation in 2008, the soil moisture, phosphorus content of farmland soil, irrigation ditch water, drainage streams water, underground water and soil percolate were monitored, which resulted in phosphorus transportation analysis in Hetao agricultural irrigation area, Inner Mongolia. The data were also statistically analyzed by SPSS13.0 in order to find out the principal factors of phosphorus transportation. The results revealed that, only the soil moisture in topsoil were markedly increased after the summer irrigation, and the soil moisture before and after summer irrigation both significantly correlated with soil depth (Correlation coefficients were 0.751 and 0.770). Meanwhile, available phosphorus (also called Olsen-P) concentration in soil significantly correlated with the soil moisture too (Sig. = 0.009). During the summer irrigation, the phosphorus concentration showed significant difference in different soil depth, but factors such as crop type and cropping pattern did not have notable impacts. After summer irrigation, phosphorus in soil transported to groundwater, mainly in the form of soluble phosphorus. The conclusions in this paper can be used to provide scientific reference on appropriate scheduling for efficient fertilization, irrigation, and controlling phosphorus loss.
Number of references:18
Main heading:Irrigation
Controlled terms:Crops - Eutrophication - Groundwater - Moisture control - Moisture determination - Phosphorus - Soil moisture - Statistical methods - Water content
Uncontrolled terms:Influence factors - Irrigation area - Statistical analysis - Water moisture
Classification code:944.2 Moisture Measurements - 922.2 Mathematical Statistics - 821.4 Agricultural Products - 821.3 Agricultural Methods - 804 Chemical Products Generally - 731.3 Specific Variables Control - 483.1 Soils and Soil Mechanics - 454.3 Ecology and Ecosystems - 453 Water Pollution - 444.2 Groundwater - 444 Water Resources
DOI:10.3969/j.issn.1002-6819.2010.04.015
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 42>
Accession number:20102413003569
Title:Three-dimensional vibration test on handles of hedge-trimmer based on virtual instrument
Authors:Zhang, Jingkai (1)
Author affiliation:(1) Agriculture Machinery Testing Appraisal and Extension Station of Beijing, Beijing 100079, China
Corresponding author:Zhang, J.
(zjkroot@sina.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:127-133
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 find a simple and practical method to test the three-dimensional vibration on the handles of hedge-trimmer, the virtual instrument was used to test the handles on the three-dimensional vibration to explore a new testing model so as to make it possible that 'General Hardware + Software Designing = Multiple Sets of Special Testing Equipments'. The software of virtual instrument was designed to collect, display, and deal with test data timely and accurately, while the choice of testing programme identifies the influence levels caused by various factors, and the selection of general hardware reduced the use of dedicated hardwares. The test results showed that vibration values were related to rotate speed of engine, contact position and contact area. Vibration values of left handle were biggest at the moderate rotate speed, and in the middle of the handle and small contact area. And vibration values of right handle were biggest at the high rotate speed, and in the rear of the handle and moderate contact area. The maximum vibration values were different producing on the left and right handles in frequency domain and in time domain. In order to compare the results, we must test the vibration values in the same condition. The result proves that the virtual instrument is simple and effective when it is used to test the handles on three-dimensional vibration, and it has the value of practical application.
Number of references:22
Main heading:Three dimensional
Controlled terms:Computer software - Digital instruments - Fences - Instrument testing - Speed - Testing - Time domain analysis
Uncontrolled terms:Contact areas - Contact position - Dedicated hardware - Frequency domains - Multiple set - Practical method - Rotate speed - Test - Test data - Test results - Testing equipment - Testing models - Three-dimensional vibrations - Time domain - Virtual instrument
Classification code:902.1 Engineering Graphics - 921 Mathematics - 931.1 Mechanics - 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 - 731.1 Control Systems - 402 Buildings and Towers - 408.2 Structural Members and Shapes - 422.2 Test Methods - 423.2 Test Methods - 703.1.1 Electric Network Analysis - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications
DOI:10.3969/j.issn.1002-6819.2010.04.020
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 43>
Accession number:20102413003556
Title:Effects of irrigation and fertilization treatments for rainfall-harvesting agriculture on niche fitness and yield of spring wheat in semi-arid regions
Authors:Li, Wenlong (1); Su, Min (2); Li, Zizhen (3)
Author affiliation:(1) Key Laboratory of Grassland Agro-Ecosystem, School of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China; (2) School of Mathematics, Hefei University of Technology, Hefei 230009, China; (3) School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China; (4) Key Laboratory of Arid and Grassland Agroecology of the Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
Corresponding author:Li, Z.
(zizhenlee@lzu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:42-48
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 important role of irrigation and fertilization for rainfall-harvesting agriculture on improving the niche-fitness and increasing productivity of spring wheat, the effects of different water supply and fertilizer treatments on the leaf area index, root biomass, niche-fitness and productivity were studied by the field plot experiment and modeling method. The results showed that impacts of water supply and fertilizer treatments on leaf area index (LAI) and root biomass were dramatic. Compared rich water treatment (RW), medium water treatment (MW) and nature water treatment (NW) with low water treatment (LW), the maximum LAI in anthesis increased by 56.9%, 30.9% and 19.1%, and the mean of root biomass increased by 84.2%, 50.4% and 26.6%, respectively. Meanwhile, these indices were also increased significantly comparing fertilization with no fertilizer application. The results about niche-fitness and productivity showed that under RW, MW, NW and LW conditions, the means of fitness (F(t)) were 0.6631, 0.5670, 0.5174 and 0.4763 kg/hm2, and the means of grain yield were 3159.2, 2345.2, 1735.7 and 1380.6 kg/hm2, respectively. Compared RW, MW and NW with LW, the fitness increased by 39.2%, 19.0% and 8.6%, and the mean of grain yield increased by 128.8%, 69.9% and 25.7%, respectively. These results indicated that increased water supply had a significant positive impact on improving fitness and productivity. Meanwhile, fertilization also played an active part in improving fitness and productivity. Statistical analysis showed that the grain yield was linear interrelated with the fitness values. The evaluation results under 16 different treatments showed that low fertilization treatment (LF), medium fertilization treatment (MF), high fertilization treatment (HF) under RW condition, MW with HF, and NW with HF, the growth condition of crop belonged to suitable; the other 11 treatments belonged to moderate or inaptitude. The maximum value of fitness (0.8351) and the highest grain yield (4275.8 kg/hm2) occurred consistently under rich water with high fertilization, which indicates this combined treatment measure is optimal for niche-fitness and productivity in semi-arid regions.
Number of references:23
Main heading:Water treatment
Controlled terms:Arid regions - Biomass - Ecology - Fertilizers - Grain (agricultural product) - Harvesting - Health - Irrigation - Leaf springs - Productivity - Rain - Water recycling - Water supply - Water supply systems
Uncontrolled terms:Active parts - Combined treatment - Evaluation results - Fertilizer applications - Field plot - Fitness values - Grain - Grain yield - Growth conditions - Leaf area index - Low water - Maximum values - Modeling method - Niche fitness - Root biomass - Semi-arid region - Spring wheat - Statistical analysis
Classification code:804 Chemical Products Generally - 805.1.1 Biochemical Engineering - 821.2 Agricultural Chemicals - 821.3 Agricultural Methods - 821.4 Agricultural Products - 821.5 Agricultural Wastes - 901.4 Impact of Technology on Society - 913.1 Production Engineering - 914.3 Industrial Hygiene - 601.2 Machine Components - 443 Meteorology - 443.3 Precipitation - 444 Water Resources - 445.1 Water Treatment Techniques - 446.1 Water Supply Systems - 453.2 Water Pollution Control - 454.3 Ecology and Ecosystems - 461.6 Medicine and Pharmacology - 525.1 Energy Resources and Renewable Energy Issues
DOI:10.3969/j.issn.1002-6819.2010.04.007
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 44>
Accession number:20102413003611
Title:Microwave vacuum drying properties and kinetics model of white fungus
Authors:Huang, Yan (1); Huang, Jianli (1); Zheng, Baodong (1)
Author affiliation:(1) College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (2) Institute of Grain and Oil Quality Supervision and Test of Fujian Province, Fuzhou 350002, China
Corresponding author:Zheng, B.
(zbdfst@163.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:362-367
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:White fungus is a edible fungus, which is characterized of high nutrition value and short shelf life. Microwave vacuum drying technique was used to dry white fungus to research its drying properties. The effects of microwave power, vacuum degree and initial moisture content on the drying rate were investigated, and microwave intensity had the greatest influence on the dehydrating rate. The suitable kinetics model which could be used to describe the relationship of moisture ratio and drying time was established base on experimental data and the proof test was performed. The results showed that the drying procedure of white fungus could accurately be described by the Page model, the predicted values of the model were nearly consistent with the observed values. The moisture contents and dehydrating rate during the drying procedure can be exactly estimated by it.
Number of references:20
Main heading:Drying
Controlled terms:Agriculture - Curing - Microwaves - Moisture - Moisture determination - Radio waves - Vacuum
Uncontrolled terms:Agriculture products - Drying rates - Drying time - Experimental data - Initial Moisture Content - Kinetics models - Microwave intensity - Microwave power - Microwave-vacuum drying - Moisture contents - Moisture ratios - Nutrition value - Page models - Proof test - Shelf life - Vacuum degree
Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control - 818.3 Rubber and Elastomer Processing - 815.1 Polymeric Materials - 802.3 Chemical Operations - 802.2 Chemical Reactions - 944.2 Moisture Measurements - 801.4 Physical Chemistry - 711 Electromagnetic Waves - 642.1 Process Heating - 633 Vacuum Technology - 443.1 Atmospheric Properties - 716.3 Radio Systems and Equipment
DOI:10.3969/j.issn.1002-6819.2010.04.062
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 45>
Accession number:20102413003573
Title:Influence of phosphate and potash fertilizers on mechanical properties of wheat stem
Authors:Yuan, Zhihua (1); Li, Yingjun (1); Zhang, Jun (2); He, Dexian (2)
Author affiliation:(1) School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China; (2) College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
Corresponding author:Yuan, Z.
(y2001zh@163.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:147-150
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:In order to prevent wheat stem lodging and to fertilize precisely, the experiments on the influence of phosphate and potash fertilizers on mechanical properties of wheat stem were performed with Zhengzhou-wheat 9023 as an object. Mechanical properties (such as flexural strength and flexural rigidity) of second base inter-node were measured by six treatments at five growth stages of wheat, which were jointing stage, booting stage, flowering stage, grain-filling stage and maturity stage. Nonmetallic material testing machine was used in the experiments. Results showed that the influence of potash fertilizer on flexural strength and flexural rigidity of second base inter-node was significant. The study results provide some references for the research on high yield cultivation and lodging resistance of wheat.
Number of references:14
Main heading:Mechanical properties
Controlled terms:Agricultural chemicals - Bending strength - Crops - Experiments - Grain growth - Nonmetallic materials - Phosphate fertilizers - Potash - Potassium fertilizers - Rigidity
Uncontrolled terms:Flexural rigidities - Flexural strength - Flowering stage - Grain filling - Growth stages - High yield - Lodging resistance - Maturity stages - Potash fertilizer - Wheat stems
Classification code:933.1.2 Crystal Growth - 931.1 Mechanics - 901.3 Engineering Research - 821.4 Agricultural Products - 821.2 Agricultural Chemicals - 951 Materials Science - 804.2 Inorganic Compounds - 803 Chemical Agents and Basic Industrial Chemicals - 802.3 Chemical Operations - 531.2 Metallography - 421 Strength of Building Materials; Mechanical Properties - 804 Chemical Products Generally
DOI:10.3969/j.issn.1002-6819.2010.04.024
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 46>
Accession number:20102413003550
Title:Physical suitability evaluation of reserve resources of cultivated land in China based on SOTER
Authors:Zhang, Ganlin (1); Wu, Yunjin (1); Zhao, Yuguo (1)
Author affiliation:(1) Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing 210008, China
Corresponding author:Zhang, G.
(glzhang@issas.ac.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:1-8
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:Physical suitability evaluation of reserve resources of cultivated land provides a scientific basis for reasonable exploitation and utilization of these lands aiming to ensure food supplies of China. Taking the whole reserve resources of cultivated land in China as the evaluation object based on 1:1000000 scale SOTER of China, nine factors of climate, landform and soil were adopted, fuzzy analysis combined with the Delphi method were used to quantify the membership functions of the selected factors and the weight contributions of individual factors were determined using the Delphi method and an analytic hierarchy process (AHP). Physical suitability indices of each evaluation unit were calculated by using the combination method of critical conditions with integrated index model, and then the suitability grades were classified. Evaluation results showed that about 56.6 × 104 km2 reserve resources of cultivated land had suitable physical quality, among which grade 1, 2, 3, 4, 5 accounted for 15.9%, 19.5%, 25.8%, 19.1% and 19.7%, respectively. Heilongjiang, Jilin, Liaoning, Shanxi. Hebei, Guizhou, Guangxi, Shandong and Jiangxi provinces could be the main areas for exploitation of reserve resources of cultivated land. With the decrease of suitability grade of reserve resources of cultivated land, the most serious limited factor changed from soil condition to climate and landform conditions. Fuzzy functions and the combination of critical conditions with integrated index model can improve effectively the rationality of evaluation result.
Number of references:32
Main heading:Membership functions
Controlled terms:Agriculture - Decision making - Decision theory - Food supply - Function evaluation - Hierarchical systems - Land use - Landforms - Soils
Uncontrolled terms:Combination method - Critical condition - Cultivated lands - Delphi method - Evaluation results - Food security - Fuzzy analysis - Fuzzy function - Guangxi - Guizhou - Index models - Individual factors - Jiangxi Province - Object based - Physical quality - Shandong - Soil conditions - Suitability evaluation - Suitability index
Classification code:961 Systems Science - 922.2 Mathematical Statistics - 921.6 Numerical Methods - 921 Mathematics - 912.2 Management - 822.3 Food Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 731.1 Control Systems - 483.1 Soils and Soil Mechanics - 481.1 Geology - 442.2 Land Reclamation - 404.2 Civil Defense - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2010.04.001
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 47>
Accession number:20102413003614
Title:Effects of coating materials and coating technologies on coated urea fertilizers
Authors:Liu, Xingbin (1); Wu, Zhijie (1); Chen, Lijun (1); Wang, Yue (2); Li, Dongpo (1)
Author affiliation:(1) Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; (2) College of Land and Environmental Science, Shenyang Agricultural University, Shenyang 110161, China; (3) Graduate School, Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Wu, Z.
(wuzj@iae.ac.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:380-384
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 effects of coating material and coating technology on the coated urea fertilizer,and to improve the production of coated urea, three kinds of commercially available polymers were chosen as test coating materials, and two kinds of fluidized-bed equipments (wurster and tangential spray fluidized-beds) were adopted to produce coated urea granules. The surface apparent characteristics of the granules were examined by scanning electron microscopy (SEM), and the release rate of urea from the granules was determined in distilled water by kinetic-release experiments. The results showed that the same coating material adopted wurster fluidized-bed had better effect of slow-release comparing with adopted tangential spray fluidized-bed, and if the coating material had higher viscosity, poor pulverization ability and poor volatilization, wurster fluidized-bed would get better coating effects. For the coating materials with suitable viscosity, both wurster fluidized-bed and tangential spray fluidized-bed were available for obtaining a better slow-release effect of coated urea.
Number of references:18
Main heading:Urea fertilizers
Controlled terms:Coated materials - Coatings - Fertilizers - Fluidization - Fluidized beds - Granulation - Metabolism - Plating - Scanning - Scanning electron microscopy - Urea - Viscosity
Uncontrolled terms:Coating material - Coating technologies - Distilled water - Release experiments - Release rate - SEM - Slow release - Test coatings - Wurster
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 802.1 Chemical Plants and Equipment - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.1 Organic Compounds - 813 Coatings and Finishes - 813.2 Coating Materials - 815.1.1 Organic Polymers - 821.2 Agricultural Chemicals - 801.2 Biochemistry - 461.9 Biology - 521.2 Combustors - 539 Metals Corrosion and Protection; Metal Plating - 741.3 Optical Devices and Systems - 539.3 Metal Plating - 642.2 Industrial Furnaces and Components - 741.1 Light/Optics - 631.1 Fluid Flow, General
DOI:10.3969/j.issn.1002-6819.2010.04.065
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 48>
Accession number:20102413003563
Title:Characteristic parameters of soil wetted volume under indirect subsurface drip irrigation
Authors:Zhao, Weixia (1); Zhang, Zhenhua (2); Cai, Huanjie (1); Xie, Hengxing (1)
Author affiliation:(1) Key Laboratory of Agricultural Soil and Water Engineering of Northwest Agriculture and Forest Univ., Yangling 712100, China; (2) Geography and Plan College of Ludong University, Yantai 264025, China; (3) Department of Irrigation and Drainage, China Institute of Water Resource and Hydropower Research, Beijing 100048, China
Corresponding author:Zhang, Z.
(zhangzh71@163.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:87-92
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:The steady-state principle of constant-head well permeameter, which was used to calculate the field-saturated hydraulic conductivity, was applied to quantify the suitable emitter discharge rate for indirect subsurface drip irrigation under different water-conducting device specification conditions in this text. Using the calculated emitter discharge rate to supply water, characteristic parameters of wetted soil volume were studied during the water movement process. Results indicated that the steady-state model of constant-head well permeameter could be used to design the emitter discharge rate for different water-conducting device specifications and soil types. During the infiltration process of indirect subsurface drip irrigation, the ponded water depth changed from zero to a constant and accelerated the water movement in the vertical direction, which reduced the discrepancy of wetted distance in lateral direction and vertical direction, while the changed water depth had small influence on the wetting front movement in vertical direction to upward and downward. The shape of wetted soil zone was spheroid, and its symmetry axis lied near the bottom of the water conducting device. The maximum wetted distance and volume of wetted soil zone were the function of irrigation time. The increment of average volumetric water content in the wetted zone had no relationship with irrigation time, and kept a constant during the whole irrigation process. The volume of wetted soil zone and the increment of average volumetric water content in wetted zone had relationship not only with soil types, but also with the combination between water conducting device parameters and emitter discharge.
Number of references:15
Main heading:Water content
Controlled terms:Geologic models - Hydraulic conductivity - Moisture determination - Seepage - Soil mechanics - Soil moisture - Specifications - Subirrigation - Wetting
Uncontrolled terms:Characteristic parameter - Constant-head well permeameter - Device parameters - Device specification - Discharge rates - Field-saturated hydraulic conductivity - Indirect subsurface drip irrigation - Infiltration process - Lateral directions - Soil types - Soil volume - Steady-state models - Subsurface drip irrigation - Symmetry axis - Vertical direction - Volumetric water content - Water depth - Water movements - Wetting fronts
Classification code:944.2 Moisture Measurements - 931.2 Physical Properties of Gases, Liquids and Solids - 902.2 Codes and Standards - 821.3 Agricultural Methods - 802.3 Chemical Operations - 632.1 Hydraulics - 483.1 Soils and Soil Mechanics - 481.1 Geology - 444 Water Resources - 441 Dams and Reservoirs; Hydro Development - 407 Maritime and Port Structures; Rivers and Other Waterways
DOI:10.3969/j.issn.1002-6819.2010.04.014
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 49>
Accession number:20102413003597
Title:Development of bundling small scale clean development mechanism (CDM) projects in livestock farm
Authors:Ma, Zonghu (1); Liu, Jijun (1); Sun, Ya'nan (1); Nan, Guoliang (2); Dong, Renjie (3)
Author affiliation:(1) College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (2) College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China; (3) College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Liu, J.
(liujijun@cau.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:280-284
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:In order to evaluate the greenhouse gas (GHG) emission reductions of the bundling small scale clean development mechanism (CDM) projects in livestock farms, one bundling small scale livestock CDM project in Hubei province of China was studied. Using methodology AMS-III.D and AMS-I.D, which were approved by executive board (EB) of clean development mechanism (CDM) under United Nation Framework Convention on Climate Change, greenhouse gas emission reduction by improvement of pig manure management and biogas utilization for electricity on seven pig farms which are bundled for a CDM project was analyzed. Additional cost of bundling was also evaluated. It has been proved that the advanced anaerobic system could reduce greenhouse gas emission by 86.5%, which was estimated to be 37443.7 t CO<inf>2</inf> equivalent a year of this bundling project. The cost of each head of pigs in bandting development compared to the non-bundling development was reduced by 49.71%. This study play a guiding role for similar project development.
Number of references:18
Main heading:Emission control
Controlled terms:Biogas - Cost reduction - Energy policy - Farms - Gas emissions - Global warming - Greenhouse gases - Greenhouses - Manures - Project management
Uncontrolled terms:Additional costs - Anaerobic systems - Biogas utilization - Bundling - CDM projects - Clean Development Mechanism - Clean development mechanism (CDM) - Emission reduction - Executive Board - Greenhouse gas emission reduction - Hubei Province - Pig manures - Project development - Small scale - United Nations
Classification code:912.2 Management - 525.6 Energy Policy - 804.1 Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.5 Agricultural Wastes - 821.6 Farm Buildings and Other Structures - 911.2 Industrial Economics - 522 Gas Fuels - 451.2 Air Pollution Control - 451.1 Air Pollution Sources - 451 Air Pollution - 443.1 Atmospheric Properties - 402.1 Industrial and Agricultural Buildings - 452.3 Industrial Wastes
DOI:10.3969/j.issn.1002-6819.2010.04.048
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 50>
Accession number:20102413003583
Title:Optimization of time-frequency parameter and its application to monitor bearing wear of internal combustion engine based on information entropy
Authors:Jia, Jide (1); Chen, Anyu (1); Zhu, Zhongkui (2)
Author affiliation:(1) Department of Equipment Technology, Institute of Automobile Management of PLA, Bengbu 233011, China; (2) School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215021, China
Corresponding author:Jia, J.
(jide@ustc.edu)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:203-207
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:Time-frequency distribution (TFD) is the best analysis tool for the single-component FM signals, however, it has cross-term interference in the analysis of multi-component LFM signals. For suppressing cross-term interference and keeping some time-frequency local characteristics, parameters of TFD were optimized based on the time-frequency information entropy, and values of some parameters were recommended. Simulation tests showed that the method improved the resolution of TFD. Research results were applied to monitor bearing wear of the internal combustion engine, and fault features were extracted and the state change of internal combustion engine was revealed.
Number of references:19
Main heading:Entropy
Controlled terms:Bearings (structural) - Combustion - Combustion equipment - Engines - Fault detection - Internal combustion engines - Natural frequencies - Optimization - Signal detection
Uncontrolled terms:Analysis tools - Bearing wear - Bearings - Cross-term interference - Fault feature - FM signals - Information entropy - Local characteristics - Multi-component LFM - Research results - Simulation tests - Time frequency - Time-frequency distributions - Time-frequency parameter
Classification code:706.2 Electric Power Lines and Equipment - 711.1 Electromagnetic Waves in Different Media - 716.1 Information Theory and Signal Processing - 654.2 Rocket Engines - 741.1 Light/Optics - 921.5 Optimization Techniques - 943.2 Mechanical Variables Measurements - 751.1 Acoustic Waves - 641.1 Thermodynamics - 408.2 Structural Members and Shapes - 422 Strength of Building Materials; Test Equipment and Methods - 521.1 Fuel Combustion - 401.1 Bridges - 521.2 Combustors - 612.1 Internal Combustion Engines, General - 617.3 Steam Engines - 612 Engines
DOI:10.3969/j.issn.1002-6819.2010.04.034
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 51>
Accession number:20102413003577
Title:Development of remote monitoring system for soil moisture based on 3S technology alliance
Authors:Li, Nan (1); Liu, Chengliang (1); Li, Yanming (1); Zhang, Jiabao (2); Zhu, Anning (2)
Author affiliation:(1) School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China; (2) Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
Corresponding author:Li, N.
(linansjtu@sjtu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:169-174
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 information is an important scientific basis for precision fertilization and irrigation in the modern agriculture. In order to acquire this information rapidly and precisely, a specific design of the remote monitoring system for soil moisture based on 3S (GPS/GIS/GPRS) technology alliance was proposed. This system consisted of the monitoring network nodes and a remote system server. By means of the ZigBee-based wireless sensor networks within a small scale, the GSM/GPRS/GPS networks within a large scale and their mutual communication with the worldwide internet, this system implemented advanced functions such as automatic data acquisition, wireless transmission and nodes orientation. Besides, long-duration solar-powered wireless sensor nodes and sink nodes were designed. The information management software running on the system server was developed for setting remote parameters and monitoring real-time data. This system may play an effective role in soil moisture information monitoring and decision-making analysis.
Number of references:15
Main heading:Monitoring
Controlled terms:Cellular telephone systems - Decision making - Electric network synthesis - Information management - Moisture control - Moisture determination - Remote control - Sensor networks - Sensor nodes - Soil moisture - Telecommunication equipment - Telecommunication systems - Wireless sensor networks
Uncontrolled terms:3S Technology - Automatic data acquisition - General packet radio service (GPRS) - General packet radio services - Information management software - Information monitoring - Monitoring network - Mutual communication - Real-time data - Remote monitoring system - Remote systems - Sink nodes - Small scale - Solar-powered - Specific design - System servers - Technology alliance - Wireless sensor node - Wireless transmissions - Zig-Bee
Classification code:731.1 Control Systems - 731.3 Specific Variables Control - 732 Control Devices - 903.2 Information Dissemination - 944.2 Moisture Measurements - 912.2 Management - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 722.4 Digital Computers and Systems - 722.3 Data Communication, Equipment and Techniques - 483.1 Soils and Soil Mechanics - 703.1.2 Electric Network Synthesis - 716 Telecommunication; Radar, Radio and Television - 716.3 Radio Systems and Equipment - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 718.1 Telephone Systems and Equipment - 722 Computer Systems and Equipment
DOI:10.3969/j.issn.1002-6819.2010.04.028
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 52>
Accession number:20102413003566
Title:Development of double-film mulch precision planter for cotton seeding
Authors:Chen, Xuegeng (1); Zhao, Yan (1)
Author affiliation:(1) Academic Institution of Machinery and Equipment, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China
Corresponding author:Zhao, Y.
(zhaoyan2542.student@sina.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:106-112
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 the problem of traditional precision seeding technology and reduce farming processes and labor consumption, a 2BMSJ-12 double-film mulch precision planter for cotton seeding was developed based on the agronomic technical requirement and the analysis of the advantage and disadvantage of seeding under and upon the mulching film. Field experimental results showed that the cotton seedling emerged 2-3 days earlier, the seedling emergence rate exceeded 94% and all the seedlings were strong in good trim by using this planter when compared with the traditional drilling style. More than 200000 hm2 field practice of the 2BMSJ-12 planter showed that the cavities ratio of cotton seeding was less than 3%, the qualification rate of seeds into holes was over 85% and the minimum row spacing of the planter was 9 cm. Thus, it indicate that the planter can meet agronomic technical requirement of serried row planting of cotton in Xinjiang area, and also help to promote the whole-course mechanization of cotton industry.
Number of references:25
Main heading:Agricultural machinery
Controlled terms:Agronomy - Cotton - Seed
Uncontrolled terms:Double-film-covering - Row spacing - Seeding technology - Seedling emergence - Technical requirement - Xinjiang
Classification code:819.1 Natural Fibers - 821.1 Agricultural Machinery and Equipment - 821.3 Agricultural Methods - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2010.04.017
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 53>
Accession number:20102413003571
Title:Design of seeder under membrane and indoor capability test of discharging seed equipment
Authors:Liu, Fei (1); Zhao, Manquan (1); Wu, Yingsi (1)
Author affiliation:(1) College of Mechanical and Electricity Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
Corresponding author:Zhao, M.
(ndjxc@yahoo.com.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:139-142
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 traditional filming planter perforates on plastic film, which easily forms harden surface soil layer, it is not good for the growth of crops which have weak break ground ability. Aim at solving this question, the design requirements of the seeder under membrane were analyzed, and the primary structures of the planter were analyzed and a series of structural parameters of the key components were given. Seeder under membrane was designed by parametric modeling software Pro_E. Reference to the relevant national standard, the single factor experiments of the machine onward speed and the number of taking seed device were performed for the corn. Experimental results indicated that when the planter box rotate speed was higher than 72 r/min, the cavity void rate obviously increased. In accordance with the relevant parameters, the optimal planter box rotate speed was 57 r/min. For sowing large plant spacing crops, the speed of operation could be quickened, and for sowing small plant spacing crops, the speed of operation should be slowed down.
Number of references:14
Main heading:Agricultural machinery
Controlled terms:Crops - Film growth - Membranes - Protective coatings - Speed
Uncontrolled terms:Capability test - Design requirements - Discharging seed equipment - Key component - Large plants - National standard - Parametric modeling - Plant spacing - Primary structures - Rotate speed - Seeder under membrane - Structural parameter - Surface soil layers
Classification code:931.1 Mechanics - 821.4 Agricultural Products - 821.1 Agricultural Machinery and Equipment - 951 Materials Science - 813.2 Coating Materials - 712.1 Semiconducting Materials - 539.2.2 Protecting Materials - 813.1 Coating Techniques
DOI:10.3969/j.issn.1002-6819.2010.04.022
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 54>
Accession number:20102413003610
Title:Effect of biological preservative C06 treatment on fresh-keeping of post-harvest honey peach
Authors:Yao, Lianghui (1); Yin, Jingyuan (2); He, Huixia (3); Xu, Li (1); Liu, Jianhong (3); Gao, Haiyan (1)
Author affiliation:(1) School of Life Sciences, Shanghai University, Shanghai 200444, China; (2) School of Computer Engineering and Science, Shanghai University, Shanghai 200444, China; (3) Shanghai Jiamai Agricultural Technology Service Company Limited, Shanghai 201300, China
Corresponding author:Gao, H.
(hygao1111@126.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:357-361
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 effects of post-harvest treatment with biological preservative C06 at two concentrations (50% and 100%) on the physiology and fresh-keeping of honey peaches (″Xinfengmilu″ of Shanghai Nanhui District) were investigated at 3°C storage. The results showed that the C06 treatment could dramatically affect the physiological changes after treatment. It decreased the loss of fruit firmness, inhabited membrane permeability and MDA level. The activities of POD, CAT and PPO showed a rise first and then a drop during storage and C06 treatment could significantly enhance anti-reversibility enzyme activity of CAT and POD, and inhibit PPO activity. After 21 days the percentage of healthy-fruit of 100% C06 treatment was 85%. The results demonstrate that the higher concentration C06 treatment is helpful for prolonging the storage life of peach at low temperature. Combined cost-effectiveness with practical production, 100% C06 treatment should be taken to honey peach preservation.
Number of references:15
Main heading:Enzyme activity
Controlled terms:Harvesting
Uncontrolled terms:After-treatment - Decompose - Fruit firmness - Honey peach - Low temperatures - Membrane permeability - Post-harvest treatments - Postharvest - Practical production - Storage life
Classification code:461.9 Biology - 821.3 Agricultural Methods
DOI:10.3969/j.issn.1002-6819.2010.04.061
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 55>
Accession number:20102413003598
Title:Simulation and scenario analysis of arable land dynamics in Yellow River Delta
Authors:Wu, Daqian (1); Wang, Renqing (1); Gao, Shen (1); Ding, Wenjuan (2); Wang, Wei (2); Ge, Xiuli (1); Liu, Jian (1)
Author affiliation:(1) Institute of Environment Research, Shandong University, Ji'nan 250100, China; (2) College of Life Science, Shandong University, Ji'nan 250100, China; (3) 4College of Light Chemistry and Environment Engineering, Shandong Institute of Light Industry, Ji'nan 250353, China
Corresponding author:Liu, J.
(ecology@sdu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
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:Aiming to investigate the dynamics of arable land, specify the underlying driving forces and project future spatiotemporal dynamics, categorical maps of arable land in the Yellow River Delta from 1992 to 2005 were obtained by via remote sensing and geographic information system techniques. Cellular automata models were calibrated with arable land maps in 1992, 1996 and 2001, and were conducted to predict the arable land maps in 2001 and 2005. The overall accuracy of simulation in 2001 and 2005 were 82.90% and 84.48%, while the values of Cohen's kappa index amounted to 0.658 and 0.689. The results showed that the cellular automata model was able to simulate arable land dynamics effectively and could be a useful tool to project future patterns of arable land in the Yellow River Delta. Cellular automata model was conducted to predicted arable land patterns in 2010 under four different scenarios. Scenario analysis showed, due to the high level of soil salinity, arable land around the abandoned Yellow River of Diaokou was the most region to degenerate.
Number of references:21
Main heading:Land use
Controlled terms:Automata theory - Cellular automata - Dynamics - Geographic information systems - Pattern recognition systems - Remote sensing - Rivers - Robots - Translation (languages)
Uncontrolled terms:Arable land - Categorical map - Cellular automata models - Driving forces - Kappa index - Scenario analysis - Soil salinity - Spatio-temporal dynamics - Yellow river - Yellow River delta
Classification code:931.1 Mechanics - 731.1 Control Systems - 731.5 Robotics - 731.6 Robot Applications - 741.1 Light/Optics - 751.1 Acoustic Waves - 903.1 Information Sources and Analysis - 903.3 Information Retrieval and Use - 921 Mathematics - 723.5 Computer Applications - 403 Urban and Regional Planning and Development - 407.2 Waterways - 442.2 Land Reclamation - 723.3 Database Systems - 444.1 Surface Water - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723 Computer Software, Data Handling and Applications - 716 Telecommunication; Radar, Radio and Television
DOI:10.3969/j.issn.1002-6819.2010.04.049
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 56>
Accession number:20102413003587
Title:Research and design of a three-dimensional GIS-based distribution network management system
Authors:Piao, Zailin (1); Zhang, Xiaoming (1); Zhao, Xueying (2)
Author affiliation:(1) College of Information and Electrical Engineering, Shenyang Agricultural University, Shenyang 110866, China; (2) School of Electronics and Information Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang 110136, 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:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:227-230
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 improve the power enterprise information management level is an important part of management for distribution network, with the two-dimensional distribution network GIS system as the major tool at present. According to the characteristics of distribution network and the shortcomings of two-dimensional distribution network GIS system for simple geometry and not being a true reflection of the distribution network equipment as well as its surrounding environmental conditions, this paper carried out the study of three-dimensional GIS and provided an implementation plan of establishing a three-dimensional distribution network GIS system. The three-dimensional distribution network GIS system was developed based on component GIS platform-SuperMap, the commercial relational database-SQL2005 and VB, which realized the visual management of power distribution lines and equipments, basic spatial analysis and data processing.
Number of references:14
Main heading:Information management
Controlled terms:Data processing - Distributed parameter networks - Geographic information systems - Three dimensional - Two dimensional - Visualization
Uncontrolled terms:Distribution network - Distribution network management - Environmental conditions - Power distribution lines - Power enterprise - Relational Database - Simple geometries - Spatial analysis - Three dimensional visualization - Three-dimensional GIS - Two dimensional distribution - Visual management
Classification code:903.3 Information Retrieval and Use - 903.2 Information Dissemination - 902.1 Engineering Graphics - 912.2 Management - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 703.1 Electric Networks - 723.3 Database Systems
DOI:10.3969/j.issn.1002-6819.2010.04.038
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 57>
Accession number:20102413003578
Title:Benifit evaluation of conservation tillage based on projection pursuit
Authors:Yuan, Junjing (1); Li, Hongwen (1)
Author affiliation:(1) China Agricultural University, Beijing 100083, China; (2) Beijing Vocational College of Electronic Science, Beijing 100176, China
Corresponding author:Li, H.
(lihongwen@cau.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:175-179
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 evaluate objectively the composite achievement of conservation tillage, a conservation tillage evaluation model based on projection pursuit was established. And the check results of the evaluation model indicated that the mean absolute error was 0.0393, and the average relative error was 1.75%. After optimizing the project direction, the multi-dimension data of the eight evaluation indices were synthesized to one dimension, and we could evaluate easily each item of test areas in Shanxi Province and Liaoning Province with the projection data. Results of the evaluation indicated that the order from good to bad of composite achievement of six samples was as follows: no-tillage with crushed stalk mulching in Shouyang test areas (B3), subsoiling with high stubble mulching in Shouyang test areas (B2), no-tillage with crushed stalk mulching in Linghai test areas (A3), no-tillage with high stubble mulching in Linghai test areas (A2), conventional tillage in Linghai test areas(A1), conventional tillage in Shouyang test areas (B1). And the results show that long term conservation tillage is practical and effective for promoting agricultural evaluation.
Number of references:22
Main heading:Agricultural machinery
Controlled terms:Agriculture - Error analysis - Soil conservation - Testing
Uncontrolled terms:Average relative error - Composite achievement - Conservation tillage - Conventional tillage - Dimension Data - Evaluation index - Evaluation models - Grading model - Liaoning Province - Long-term conservation - Mean absolute error - No tillage - One dimension - Projection data - Projection pursuits
Classification code:921.6 Numerical Methods - 821.3 Agricultural Methods - 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 483.1 Soils and Soil Mechanics - 423.2 Test Methods - 422.2 Test Methods
DOI:10.3969/j.issn.1002-6819.2010.04.029
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 58>
Accession number:20102413003555
Title:Experimental of disk infiltration characteristics with different soil salt contents
Authors:Chen, Shiping (1); Li, Yi (1); Fu, Qiuping (2); Gao, Jinfang (1)
Author affiliation:(1) College of Water Resources and Architecture Engineering, Northwest Agriculture and Forestry University, Yangling 71200, China; (2) Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource, Northwest Agriculture and Forestry University, Yangling 712100, China; (3) Graduate School of Chinese Academy of Sciences, Beijing 100039, China
Corresponding author:Li, Y.
(liyikitty@126.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:36-41
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 characteristics of soil water infiltration to different salt contents soils are the basis for accurate acquiring soil hydraulic parameters. Based on the infiltration experiments using a disc infiltrometer, the characteristics of the soil water movement under the different negative heads (-1, -3, -6, -9 and -12 cm) for 4 soils with different soil salt contents were analyzed. The results showed that with the decrease of the negative head, the parameters including the sorptivity, the steady infiltration rate, the unsaturated hydraulic conductivity and the macroscopic capillary length decreased to different extents. As the soil salt contents increased, the steady infiltration rates and unsaturated hydraulic conductivity increased. The parameters in Garder exponential model for unsaturated hydraulic conductivity was determined according to the experimental data at different negative water pressure heads, which could provide a reference for estimating hydraulic parameters of salinity soils.
Number of references:25
Main heading:Geologic models
Controlled terms:Hydraulic conductivity - Salts - Seepage - Soil mechanics - Soil moisture - Underwater soils
Uncontrolled terms:Capillary length - Disc infiltrometer - Experimental data - Exponential models - Hydraulic parameters - Infiltration characteristic - Negative water pressure head - Salt content - Soil hydraulic parameters - Soil salt content - Soil water - Soil water movement - Sorptivity - Steady infiltration rate - Unsaturated hydraulic conductivity - Water pressures
Classification code:804.1 Organic Compounds - 632.1 Hydraulics - 483.1 Soils and Soil Mechanics - 804.2 Inorganic Compounds - 481.1 Geology - 441 Dams and Reservoirs; Hydro Development - 407 Maritime and Port Structures; Rivers and Other Waterways - 471.1 Oceanography, General
DOI:10.3969/j.issn.1002-6819.2010.04.006
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 59>
Accession number:20102413003594
Title:Effects of alkaline ozone pretreatment on rice straw
Authors:Li, Huiyong (1); Huang, Kelong (1); Jin, Mi (2); Wei, Qinqin (3); Li, Zhiguang (2)
Author affiliation:(1) College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; (2) College of Science, Hunan Agricultural University, Changsha 410128, China; (3) Hunan Institute of Agriculture Economy and Regional Planning, Changsha 410125, China
Corresponding author:Huang, K.
(klhuang@mail.csu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:264-268
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 effects of alkaline ozone pretreatment on enzymatic hydrolysis, composition and the surface morphology of rice straw, alkaline ozone pretreatment and enzymatic hydrolysis of rice straw, and the scanning electron microscopic analysis and the component analysis of untreated and treated rice straw were performed, The solutions from the pretreatment were examined by UV/VIS-spectrophotometer. The results showed that lignin of rice straw was oxidative degradated to small molecular organic acid by alkaline ozone pretreatment. Alkaline ozone pretreatment dropped the content of lignin and increased the content of cellulose of rice straw. The scanning electron microscopic analysis showed that mechanical tissue of rice straw was fully emerged and the porosity was increased. Thus, the effective specific surface area available to enzymatic hydrolysis of rice straw increased. The maximum yield of reducing sugars from rice straw was 902 mg/g by alkaline ozone pretreatment and enzymatic saccharification (45°C, pH 5.0, 120 h) using 31.2 mg/g enzyme, and the ratio of enzymatic saccharification was 92.57%. The enzymatic saccharification ratios of the alkaline pretreated and untreated rice straw were 74.90% and 53.53%, respectively, at the same enzymatic saccharification condition. The enzymatic saccharification ratio of the alkaline ozone pretreated rice straw was higher evidently than the alkaline pretreated and untreated rice straw.
Number of references:16
Main heading:Enzymatic hydrolysis
Controlled terms:Electrons - Lignin - Metallography - Organic acids - Ozone - Saccharification - Scanning - Scanning electron microscopy - Sugar (sucrose)
Uncontrolled terms:Component analysis - Enzymatic saccharification - Pre-Treatment - Reducing sugars - Rice straws - Scanning electron microscopic
Classification code:931.3 Atomic and Molecular Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 822.3 Food Products - 815.1.1 Organic Polymers - 811.3 Cellulose, Lignin and Derivatives - 804.1 Organic Compounds - 804 Chemical Products Generally - 802.2 Chemical Reactions - 801.2 Biochemistry - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 701.1 Electricity: Basic Concepts and Phenomena - 531.2 Metallography
DOI:10.3969/j.issn.1002-6819.2010.04.045
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 60>
Accession number:20102413003568
Title:Numerical analysis on distribution characteristics of flow velocity in a radial style diesel particulate filter
Authors:Gong, Jinke (1); Wu, Gang (1); Wang, Shuhui (1); Liu, Yunqing (1); Fu, Jun (1); Long, Gang (1)
Author affiliation:(1) College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
Corresponding author:Wu, G.
(wug1999@163.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:119-126
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 obtaining the distribution characteristics of flow velocity inside a radial diesel particulate filter (DPF) which can rotate, flow computation software was used in simulating distribution characteristics of flow velocity. Several influence parameters such as flow velocity, diameter ratio, divergence angle and the length of filter were investigated. Under the condition of inlet velocity of 50 m/s, the flow velocity of calculation section was measured. Through comparison between measured results and simulated results, the maximal error of flow velocity was 3.2 m/s, and the simulated results was reliable. As the results, distribution uniformity of flow velocity could be improved by reducing inlet velocity, diameter ratio and divergence angle, and increasing the length of filter. Study on the distribution characteristics of flow velocity inside the DPF is very significant for controlling particle regeneration, improving utilization ratio and operating life of the DPF.
Number of references:15
Main heading:Inlet flow
Controlled terms:Air filters - Diesel engines - Flow simulation - Flow velocity - Fuel filters - Numerical analysis - Particulate emissions - Velocity
Uncontrolled terms:Diameter ratio - Diesel particulate filter - Diesel particulate filters - Distribution characteristics - Distribution uniformity - Divergence angle - Flow computation - Influence parameter - Inlet velocity - Maximal error - Measured results - Numerical simulation - Operating life - Simulated results - Utilization ratios
Classification code:943.2 Mechanical Variables Measurements - 931.1 Mechanics - 921.6 Numerical Methods - 802.1 Chemical Plants and Equipment - 723.5 Computer Applications - 631.1 Fluid Flow, General - 631 Fluid Flow - 612.2 Diesel Engines - 523 Liquid Fuels - 522 Gas Fuels - 521.3 Fuel Burners - 451.2 Air Pollution Control - 451.1 Air Pollution Sources
DOI:10.3969/j.issn.1002-6819.2010.04.019
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 61>
Accession number:20102413003567
Title:Design of variable spraying system based on ARM
Authors:Wang, Lixia (1); Zhang, Shuhui (1); Ma, Chenglin (1); Xu, Yan (1); Qi, Jiangtao (1); Wang, Wei (1)
Author affiliation:(1) Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
Corresponding author:Zhang, S.
(shzhang@jlu.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:113-118
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:In order to improve pesticide efficiency, a variable spraying control system was designed with three working modes: a manual control, an automatic control and a calibration mode. The variable spraying control system took the S3C44B0X microprocessor of ARM7 series as its core control part and programmed with C language in the UCOS-II environment. The system was able to fulfill the data acquisition and processing of the position and the speed about the sprayer, the pressure and the flow about nozzles, and recognize the plot and then adjust the electrical control valve to realize variable spraying. The test results in the field showed that the error of the variable spraying was less than 5% when the spray dosage was 465-600 kg/hm2 at speed of 4.2 km/h, the system can meet the requirements of variable spraying.
Number of references:14
Main heading:Microprocessor chips
Controlled terms:Agriculture - Automation - Control - Control theory - Data processing - Pneumatic control equipment - Spray nozzles
Uncontrolled terms:Advanced RISC machines - Advanced RISC machines (ARM) - At-speed - Automatic control - C language - Electrical control - Precision Agriculture - S3C44B0X - Spraying system - Test results - Working mode
Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control - 732.1 Control Equipment - 732 Control Devices - 731.1 Control Systems - 731 Automatic Control Principles and Applications - 723.2 Data Processing and Image Processing - 722 Computer Systems and Equipment - 721 Computer Circuits and Logic Elements - 714.2 Semiconductor Devices and Integrated Circuits - 632.4 Pneumatic Equipment and Machinery - 631.1 Fluid Flow, General
DOI:10.3969/j.issn.1002-6819.2010.04.018
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 62>
Accession number:20102413003570
Title:Self-adjustment fuzzy control for threshing cylinder and its VLSI implementation
Authors:Ni, Jun (1); Mao, Hanping (2); Cheng, Xiuhua (2)
Author affiliation:(1) Hi-Tech Key Laboratory of Information Agriculture, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China; (2) Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Mao, H.
(maohp@ujs.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:134-138
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 improve transient performance about speed-regulating system of threshing cylinder, the problems about control of axial threshing cylinder and its hardware implementation were discussed. Self-adjustment fuzzy control algorithm about cylinder was introduced and the fuzzy controller was designed. Simulation model about threshing cylinder of 4LZ-2.0 combine and the simulation system about self-adjustment fuzzy control were set up. A hardware implementation about self-adjustment fuzzy controller of cylinder based on a single FPGA (field programmable gate array) was proposed. Results indicated that the self-adjustment fuzzy controller had better dynamic characteristic and adaptability to the abrupt changes about the load of threshing cylinder. Compared with ordinary fuzzy control, when the load increased by 40% abruptly, the system adjusting time reduced to 0.4 s from 0.9 s and overshoot reduced to 1 rad/s from 1.5 rad/s. FPGA technology of self-adjustment fuzzy control about combine cylinder has many advantages, such as convenient timing test, high inference speed and great system integration. It is an efficient method to implement intelligent control strategy.
Number of references:15
Main heading:Controllers
Controlled terms:Agriculture - Algorithms - Combines - Computer simulation - Cylinders (shapes) - Fuzzy control - Fuzzy inference - Hardware
Uncontrolled terms:Abrupt change - Adjustment factors - Dynamic characteristics - Efficient method - FPGA technology - Fuzzy control algorithms - Fuzzy controllers - Hardware implementations - Self-adjustment - Simulation model - Simulation systems - Speed-regulating - System integration - Transient performance - VLSI implementation
Classification code:821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 732.1 Control Equipment - 731 Automatic Control Principles and Applications - 723.5 Computer Applications - 921 Mathematics - 723.4.1 Expert Systems - 723 Computer Software, Data Handling and Applications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 605 Small Tools and Hardware - 408.2 Structural Members and Shapes - 723.4 Artificial Intelligence
DOI:10.3969/j.issn.1002-6819.2010.04.021
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 63>
Accession number:20102413003554
Title:Estimation of rice evapotranspiration under controlled irrigation by using Penman-Monteith method
Authors:Ding, Jiali (1); Peng, Shizhang (1); Xu, Junzeng (1); Wei, Zheng (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:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:31-35
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 experimental data from the ″863″ National Key Project on water-saving agriculture, evapotranspiration of paddy rice under controlled irrigation condition was estimated by using a mended Penman-Monteith method presented in this paper with a variable canopy resistance. Results showed that canopy resistance could be estimated better by adopting Penman-Monteith model which modified by soil moisture content. Variation of canopy resistance under different water conditions was revealed at the same time. Relative error between measured crop evapotranspiration and evaluated one was reduced from 18.57% to 10.84% by using the mended Penman-Monteith model and the performance even was improved at growth stages when ground was not covered completely. The sensitivity of Penman-Monteith estimates of evapotranspiration with different input data and parameters was very dependent on the values of the soil moisture, air temperature and humidity. Regress parameters (c<inf>1</inf>, c<inf>0</inf>) showed less effect on crop evapotranspiration, which indicated the mended Penman-Monteith model would be available to estimate crop evapotranspiration under different irrigation conditions and at different areas when regress parameters were decided for one crop.
Number of references:19
Main heading:Geologic models
Controlled terms:Crops - Evapotranspiration - Irrigation - Moisture determination - Soil moisture - Water conservation - Water supply
Uncontrolled terms:Air temperature - Canopy resistance - Crop evapotranspiration - Experimental data - Growth stages - Input datas - P-model - Paddy rice - Penman-Monteith - Penman-Monteith equations - Penman-Monteith method - Relative errors - Soil moisture content - Water conditions
Classification code:821.4 Agricultural Products - 821.3 Agricultural Methods - 802.3 Chemical Operations - 483.1 Soils and Soil Mechanics - 944.2 Moisture Measurements - 481.1 Geology - 444.1 Surface Water - 444 Water Resources - 403.1 Urban Planning and Development - 446.1 Water Supply Systems
DOI:10.3969/j.issn.1002-6819.2010.04.005
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 64>
Accession number:20102413003557
Title:Saline water irrigation management for spring wheat in the Yellow River Irrigation District of Ningxia
Authors:Yang, Jianguo (1); Huang, Guanhua (1); Ye, Dezhi (1); Xu, Xu (1); Wang, Jun (1); Huang, Quanzhong (1); Tai, Rikun (1); Wang, Shijing (1); Meng, Lingguang (1)
Author affiliation:(1) Chinese-Israeli International Center for Research and Training in Agriculture, Beijing 100083, China; (2) Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China; (3) Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China
Corresponding author:Huang, G.
(ghuang@cau.edu.cn)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:49-56
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 best irrigation management mode with saline water for spring wheat in the Yellow River irrigation district of Ningxia, the SWAP model was calibrated and validated with the experimental data carried out in 2007, then the model was applied to evaluate the saline water irrigation scheduling for the experimental year and different hydrological years. Calibration and validation results indicated that the simulated soil water content, salt concentration and crop growth indices were in good consistent with the measured data. Results implied that the model had been well calibrated and validated, and the model could be used as a management tool to evaluate the effects of various irrigation management practices on water and solute dynamics and crop yield. The simulated results indicated that the optimal irrigation management practice of spring wheat was to irrigate the field with four times of mixed irrigation (1:1 saline and fresh water) at total amount of 2400 m3/hm2 for the experimental year. The optimal irrigation practices of spring wheat for the hydrologic years of 75% and 50% were four times of mixed irrigation each for pre-sowing, jointing, heading and filling stages with total irrigation amount of 3000 m3/hm2 and 2300 m3/hm2, respectively. And for the hydrologic year of 25%, application of two times of mixed irrigation each for jointing and heading stages with total amount of 2000 m3/hm2 was the optimal saline water irrigation practice of spring wheat. The optimal irrigation mode has guiding significance to effective irrigation of saline water in Yellow River Irrigation District.
Number of references:15
Main heading:Saline water
Controlled terms:Computer simulation - Crops - Irrigation - Optimization - Rivers - Scheduling - Soil moisture - Solute transport - Underwater soils - Water content
Uncontrolled terms:Crop growth - Crop yield - Experimental data - Filling stage - Hydrological years - Irrigation districts - Irrigation management - Irrigation practices - Irrigation scheduling - Management tool - Measured data - Saline and fresh water - Salt concentration - Simulated results - Simulation - Soil water content - Spring wheat - SWAP model - Validation results - Yellow river
Classification code:931 Classical Physics; Quantum Theory; Relativity - 921.5 Optimization Techniques - 912.2 Management - 821.4 Agricultural Products - 821.3 Agricultural Methods - 723.5 Computer Applications - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 461.3 Biomechanics, Bionics and Biomimetics - 444.2 Groundwater - 444.1 Surface Water - 444 Water Resources - 407.2 Waterways
DOI:10.3969/j.issn.1002-6819.2010.04.008
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 65>
Accession number:20102413003559
Title:Numerical analysis of influence of hill slope sheet flow on soil temperature
Authors:Zhang, Chao (1); Feng, Jie (2); Liu, Fanggui (4)
Author affiliation:(1) State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; (2) College of Water Resources and Hydrology, Hohai University, Nanjing 210098, China; (3) Water Resources Research Institute, China Institute of Water Resources and Hydropower Research, Beijing 100044, China; (4) School of Civil Engineering, Guangxi University, Nanning 530004, China
Corresponding author:Zhang, C.
(zchohai@126.com)

Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:4
Issue date:April 2010
Publication year:2010
Pages:64-69
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 further study the influence mechanism of the slope sheet flow on the thermal transport in soil, in this paper, based on slope water movement theory and thermodynamic equation, authors studied the temperature field distribution in soil quantitatively under the influence of slope sheet flow. The effects of rainfall intensity and surface transfer coefficient on temperature field distribution in soil were discussed, and the temperature variations in different depth of soil were analyzed. The results show that the influence of overland flow on the change of soil temperature is obvious. Heat transfer coefficient of hill slope sheet flow is influenced directly by temperature gradient between hill slope sheet flow and soil surface, then the variation of soil temperature is changed. There is a delay-effect of the change of deep soil temperature. The change of soil temperature within earlier rainfall course is mostly in soil surface, and the temperature distribution of deep soil is influenced with the lapse of pre-rain time. The work here will make on further understand of the study of mechanisms and motion models of water-heat exchange, and will be of great value of research on the consideration of problems related to hydrology, soil corrosion, water and soil conservation, agrology, agricultural irrigation, and so on.
Number of references:15
Main heading:Soil surveys
Controlled terms:Equations of motion - Flow of water - Gages - Geologic models - Heat exchangers - Heat transfer coefficients - Numerical analysis - Paper sheeting - Rain - Rain gages - Soil conservation - Soils - Temperature distribution - Thermoanalysis - Water
Uncontrolled terms:Agricultural irrigation - Deep soils - Heat exchange - Influence mechanism - Motion models - Overland flow - Rainfall intensity - Sheetflows - Slope waters - Soil corrosion - Soil surfaces - Soil temperature - Surface transfer - Temperature field distribution - Temperature gradient - Temperature variation - Thermal transport - Thermodynamic equations
Classification code:943.3 Special Purpose Instruments - 641.2 Heat Transfer - 801 Chemistry - 804.2 Inorganic Compounds - 811.1.1 Papermaking Processes - 821.3 Agricultural Methods - 921.2 Calculus - 921.6 Numerical Methods - 931.1 Mechanics - 641.1 Thermodynamics - 406.2 Roads and Streets - 443.2 Meteorological Instrumentation - 443.3 Precipitation - 631.1.1 Liquid Dynamics - 444 Water Resources - 483.1 Soils and Soil Mechanics - 616.1 Heat Exchange Equipment and Components - 481.1 Geology
DOI:10.3969/j.issn.1002-6819.2010.04.010
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

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