Accession number:20101512841200
Title:Clinopodium pitch control loop based on adaptive artificial fish school algorithm-BP neural networks
Authors:Shi, Biao (1); Li, Yuxia (1); Yu, Xinhua (2); Yan, Wang (1); Meng, Xin (1); He, Changsheng (1)
Author affiliation:(1) Institute of Water Resources and Hydro-Electric Engineering, Xi'an University of Technology, Xi'an 710048, China; (2) Technical Institute of High Vocation, Qingdao University of Science and Technology, Qingdao 261000, China
Corresponding author:Shi, B.
      (biaosh2008@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:145-149
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 developing an intelligent controller for regulating blade pitch angle and wind turbine to reach the control objectives, which get maximum energy and achieve the smallest changes of rotational speed, power and mechanical load in change of wind, a technique of clinopodium pitch control loop based on resilient adaptive artificial fish school algorithm-backpropagation neural network was proposed to control clinopodium pitch angle, resilient adaptive artificial fish school optimization algorithm-backpropagation neural network was analyzed, and wind turbine model of intelligent control was established. Changes of power coefficients, tip speed ratio, power and voltage were simulated under different pitch angles of blades by the method, and the simulated values were compared with the measured values. Experimental results indicated that the simulated values were very closed to the measured values, and the simulated values were better. This result shows that the principle of the method is correct, the wind turbine model of intelligent control is accordant to actual regulation and convenient for microcomputer control, controller can be used for real-time control.
Number of references:15
Main heading:Adaptive control systems
Controlled terms:Adaptive algorithms - Backpropagation algorithms - Controllers - Fish - Intelligent control - Meats - Neural networks - Optimization - Real time control - Remote control  - Turbomachine blades - Wind power - Wind turbines
Uncontrolled terms:Artificial fish school - Artificial fish school algorithm - Back propagation neural networks - Blade pitch - BP neural networks - Control objectives - Intelligent controllers - Mechanical loads - Microcomputer control - Optimization algorithms  - Pitch angle - Pitch control loop - Pitch controller - Power coefficients - Rotational speed - Tip speed ratio
Classification code:731 Automatic Control Principles and Applications - 731.1 Control Systems - 732 Control Devices - 732.1 Control Equipment - 723.4.1 Expert Systems - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 822.3 Food Products - 921 Mathematics - 921.5 Optimization Techniques - 822 Food Technology - 723.4 Artificial Intelligence - 461.1 Biomedical Engineering - 471 Marine Science and Oceanography - 612.3 Gas Turbines and Engines - 615.8 Wind Power (Before , use code ) - 461 Bioengineering and Biology - 617.1 Hydraulic Turbines - 618 Compressors and Pumps - 631.1 Fluid Flow, General - 723 Computer Software, Data Handling and Applications - 617.2 Steam Turbines
DOI:10.3969/j.issn.1002-6819.2010.01.025
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 2>
Accession number:20101512841228
Title:Evaluation of biodegradability of biodiesel prepared from cotton seed oil
Authors:Chen, Jinsi (1); Wang, Xiangyang (1); Hu, Enzhu (1); Xu, Yufu (1); Hu, Xianguo (1); Pan, Lijun (2); Jiang, Shaotong (2)
Author affiliation:(1) School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China; (2) School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author:Chen, J.
      (jinsi_chen@126.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:301-304
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 biodegradabilities of biodiesels prepared from cotton seed oil via methyl or ethyl were investigated by the OECD 301B Modified Sturm Method. In aquatic aeration cultures, pure cotton seed oil methyl and ethyl esters biodegradability rates was 99.7% and 99.1%, respectively, after 28 days; Biodegradability rates of cotton seed oil methyl and ethyl esters in samples of B50 was 93.8% and 95.7%, respectively, after 28 days. Biodegradability rates of cotton seed oil methyl and ethyl esters in samples of B20 was 80.8% and 81.9%, respectively, after 28 days, but only 49.9% of fossil diesel was decomposed at the same condition. The more the cotton seed oil methyl and ethyl esters in mixtures were, the easier the biodegradability was. The biodegradability of the fuel mixture was enhanced by adding biodiesel. The research contributes to understand the decomposition characteristics of biodiesel via cotton seed oil, and also helps to control environment pollution.
Number of references:20
Main heading:Esters
Controlled terms:Biochemistry - Biodegradability - Biodegradation - Biodiesel - Cotton - Esterification - Oils and fats - Pollution control - Seed
Uncontrolled terms:Control environment - Ethyl esters - Fuel mixtures - Methyl esters - Seed oil
Classification code:821.4 Agricultural Products - 819.1 Natural Fibers - 804.1 Organic Compounds - 802.2 Chemical Reactions - 822.3 Food Products - 801.2 Biochemistry - 461.8 Biotechnology - 454.2 Environmental Impact and Protection - 454 Environmental Engineering - 523 Liquid Fuels
DOI:10.3969/j.issn.1002-6819.2010.01.053
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 3>
Accession number:20101512841195
Title:Characteristics of drifting sand flux over conservation tillage field
Authors:Chen, Zhi (1); Ma, Shuoshi (1); Zhao, Yonglai (2); Sun, Yuechao (2); Cui, Hongmei (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China; (2) Vocational and Technical College, Inner Mongolia Agricultural University, Baotou 014109, China
Corresponding author:Chen, Z.
      (chz6653@sohu.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:118-122
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 erosion by wind is a major cause of farmland degradation in arid and semiarid area of north China. In this paper, a movable wind tunnel was employed to carry out the field tests both on conservation tillage field and conventional field ploughed in fall. The characteristics of drifting sand flux for conservation tillage field and conventional tillage field, and the influencing mechanism of conservation tillage on soil erosion by wind were analyzed. It provides a theoretical basis on preventing farmland wind erosion. The results show that the wind speed can be rapidly reduced on conservation tillage field due to the standing residual stubble by contrast with the conventional tillage field, especially the logarithm relationship between wind velocity variation and residual stubble height was changed. Also the configuration of drifting sand flux was changed, which was mainly occurred at height of 180-400 mm, and accounted for 67.94%-69.28% of total sediment discharge. The maximum sediment discharge rate was emerged at height of 240 mm above the soil surface, and the shapes of drifting sand flux structure like an elephant nose, so that it was named "elephant nose effect". The total sediment discharge rate of the drifting sand flux was apparently lower than that on compared conventional farmland, indicating that the conservation tillage is an effective approach of preventing field from wind erosion and desertification.
Number of references:24
Main heading:Soil conservation
Controlled terms:Agricultural machinery - Algebra - Climatology - Farms - Sand - Sedimentology - Soil mechanics - Soils - Wind tunnels
Uncontrolled terms:Conservation tillage - Conventional tillage - Field test - North China - Sand flux - Sediment discharge - Semiarid area - Soil erosion - Soil surfaces - Theoretical basis  - Wind erosions - Wind speed - Wind velocities
Classification code:821.3 Agricultural Methods - 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 651.2 Wind Tunnels - 921.1 Algebra - 505 Mines and Mining, Nonmetallic - 481.1 Geology - 443 Meteorology - 422.1 Test Equipment - 483.1 Soils and Soil Mechanics
DOI:10.3969/j.issn.1002-6819.2010.01.020
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 4>
Accession number:20101512841196
Title:Topsoil sediment distribution along height above bare tillage land in agro-pastoral ecotone of northern foot of Yinshan Mountain
Authors:Zou, Chunxia (1); Shen, Xiangdong (1); Li, Zhangjun (2)
Author affiliation:(1) College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China; (2) Inner Mongolia Weather Bureau, Huhhot 010051, China
Corresponding author:Shen, X.
      (ndsxd@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:123-128
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 field sediment collection experiment by SCC-6 sediment collector and sediment particle composition in lab experiment in order to master the characteristics of wind erosion in agro-pastoral ecotone of northern foot of Yinshan Mountain, the sediment amount distribution along height above bare tillage land in the local was obtained, which revealed the variation of sediment amount and saltation particle composition. In addition, the sediment amount distribution along height and the relation between wind speed and sediment amount was conducted under some different wind forces in 0FDY-1.2 wind tunnel. The results showed that soil wind erosion was the near-surface wind-sand activity. The sediment particle saltates mainly in 7.5-43.5 cm. Wind sediment amount decreased along height, which correlate well with power function, exponent function and logarithm function. The sediment particle composition was influenced strongly by wind erosion intensity and topsoil characteristics. However, the regularity of sediment composition was distinct in a definite paticle size in different heights. Wind erosion amount increases with wind speed exponentially, which was influenced by times that the wind does. It will lay a soild foundation for searching the rules of soil wind erosion and puting forwards some effective measures against soil losses by wind in future.
Number of references:14
Main heading:Sediments
Controlled terms:Aerodynamics - Agricultural machinery - Agriculture - Algebra - Experiments - Landforms - Sedimentology - Soil mechanics - Soils - Wind effects  - Wind tunnels
Uncontrolled terms:Bare furrow - Different heights - Effective measures - Exponent function - Field experiment - Logarithm function - Near-surface winds - Particle composition - Power functions - Sediment composition  - Sediment distribution - Sediment particles - Soil loss - Soil wind erosion - Vertical distributions - Wind erosions - Wind forces - Wind speed
Classification code:901.3 Engineering Research - 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 651.2 Wind Tunnels - 651.1 Aerodynamics, General - 921.1 Algebra - 483.1 Soils and Soil Mechanics - 481.1 Geology - 443.1 Atmospheric Properties - 422.1 Test Equipment - 408.1 Structural Design, General - 483 Soil Mechanics and Foundations
DOI:10.3969/j.issn.1002-6819.2010.01.021
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 5>
Accession number:20101512841212
Title:Design and application of knowledge model and PDA-based precision farming system
Authors:Liu, Xiaojun (1); Qiu, Xiaolei (1); Sun, Chuanfan (1); Cao, Weixing (1); Zhu, Yan (1); Wu, Fuguan (2)
Author affiliation:(1) Jiangsu Key Laboratory for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (2) Agriculture and Forestry Bureau of Wujiang City, Jiangsu Province, Wujiang 215128, China
Corresponding author:Zhu, Y.
      (yanzhu@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:1
Issue date:January 2010
Publication year:2010
Pages:210-215
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 make good use of agricultural resources, and realize the convenient and digital crop production management, a knowledge model and PDA-based precision farming system was established on the platform of Microsoft Visual Studio.NET 2003, based on the existing crop management knowledge model, and by integrating the technologies of PDA, embedded-GIS and GPS. The system not only realized the functions such as pre-sowing (or transplanting) cultural plan design, suitable dynamic indices design, and real-time regulation based on crop growth status, but also had the functions as map handling, location and navigation, spatial data collection and information management. In 2007, the system was carried out in the rice production region of Wujiang City, Jiangsu Province. The application result indicated that the average rice yield in the experimental fields with precision management plans recommended by the system was 9 196.9 kg/hm², with 7.43% increasing production and 7.5 kg/hm² decreasing nitrogen rate, as compared with the traditional cultural plans. This system provides a new service platform for crop precision farming management, and greatly improves the practicability of precision farming technology.
Number of references:17
Main heading:Embedded systems
Controlled terms:Crops - Cultivation - Design - Geographic information systems - Industrial management - Information management - Information systems - Personal digital assistants
Uncontrolled terms:Agricultural resources - Crop growth - Crop managements - Crop production - Design and application - Increasing production - Jiangsu province - Knowledge model - Management plans - MicroSoft  - New services - Nitrogen rate - PDAs - Precision farming - Rice production - Rice yield - Spatial data
Classification code:903.3 Information Retrieval and Use - 903.2 Information Dissemination - 902.1 Engineering Graphics - 821.4 Agricultural Products - 912.2 Management - 821.3 Agricultural Methods - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 408 Structural Design - 723.3 Database Systems
DOI:10.3969/j.issn.1002-6819.2010.01.037
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 6>
Accession number:20101512841203
Title:Determination of key components and technological parameters of shred fish producer
Authors:Zhang, Qianneng (1); Zong, Li (1); Xiong, Shanbo (2)
Author affiliation:(1) Department of Engineering and Technology, Huazhong Agricultural University, Wuhan 430070, China; (2) College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Zong, L.
      (zongli@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:1
Issue date:January 2010
Publication year:2010
Pages:160-165
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 this paper, shred fish producer was taken as the object. Some key components and technological parameters, such as terminal velocity of cutting tools, thickness of cutting tools, quantity of cutting tools and striking time, were studied to improve the utilization values of freshwater fish. The optimal combination of the key components and technological parameters were determined by organoleptic investigation and fraction void test on smitten fish, which was digestion time 30 min, striking time 20 s, terminal velocity of cutting tool 2 840 r/min and thickness of cutting tool 5 mm. With this craft, the productivity of shred fish producer was about 150 kg/h. This equipment can ameliorate processing technology of dried fish floss, and improve the production efficiency and raw material utilization rate, thus impulse the development of processing industry for fresh water fish.
Number of references:16
Main heading:Cutting tools
Controlled terms:Computer crime - Cutting - Fish - Food processing - Machine tools - Meats - Metal working tools - Void fraction - Water
Uncontrolled terms:Digestion time - Dried fish floss - Fresh Water - Freshwater fishes - Key component - Optimal combination - Processing industry - Processing technologies - Production efficiency - Raw material utilization  - Shred fish producer - Technological parameters - Terminal velocity
Classification code:951 Materials Science - 723 Computer Software, Data Handling and Applications - 804.2 Inorganic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 822 Food Technology - 822.2 Food Processing Operations - 822.3 Food Products - 902.3 Legal Aspects - 931.2 Physical Properties of Gases, Liquids and Solids - 631 Fluid Flow - 444 Water Resources - 461 Bioengineering and Biology - 471 Marine Science and Oceanography - 606.2 Abrasive Devices and Processes - 603.1 Machine Tools, General - 604.1 Metal Cutting - 605 Small Tools and Hardware - 603.2 Machine Tool Accessories
DOI:10.3969/j.issn.1002-6819.2010.01.028
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 7>
Accession number:20101512841186
Title:Electromagnetic induction based interpreting model of soil salinity in different soil layers
Authors:Liu, Guangming (1); Yang, Jingsong (1); Yao, Rongjiang (1)
Author affiliation:(1) Institute of Soil Science, Chinese Acad. of Sci., Nanjing 210008, China
Corresponding author:Liu, G.
      (gmliu@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:1
Issue date:January 2010
Publication year:2010
Pages:61-66
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:This article focuses on the foundation and validation of soil salinity model based on electro magnetic (EM) induction technique. Variance contribution of factors (such as soil salt content, soil water content, soil density, clay content, electrical conductivity of groundwater, and groundwater depth) to soil apparent electrical conductivity (eq. EM value) measured by electromagnetic inducting instruments and the order of function weights of influence factors were obtained by path analysis. According to variance contribution, their relative weight order from high to low and designed total contribution (90%), dominant non-salinity factors to EM values were selected and thus parameter system of the model for interpreting soil salinity were built up. Optimized layer-based (0-20, &gt;20-60, &gt;60-100 and &gt;100-160 cm) soil salinity model was found via stepwise regression of multi-factors and interactions. Validation result showed that the model was of high accuracy and almost all of the relative errors were lower than 10%. This model can be used to interpret soil salinity in inner or coastal irrigation areas with shallow groundwater table.
Number of references:16
Main heading:Geologic models
Controlled terms:Damping - Electric conductivity - Electromagnetic induction - Groundwater - Groundwater resources - Inductance measurement - Regression analysis - Salinity measurement - Soil moisture - Soil surveys  - Underwater soils - Water content
Uncontrolled terms:Apparent electrical conductivity - AS-soils - Clay content - Electrical conductivity - High-to-low - Influence factors - Irrigation area - Multi factors - Parameter system - Path analysis  - Relative errors - Relative weights - Shallow groundwater - Soil density - Soil layer - Soil salinity - Soil water content - Stepwise regression - Validation results
Classification code:943.3 Special Purpose Instruments - 942.2 Electric Variables Measurements - 931.1 Mechanics - 922.2 Mathematical Statistics - 701.2 Magnetism: Basic Concepts and Phenomena - 701.1 Electricity: Basic Concepts and Phenomena - 483.1 Soils and Soil Mechanics - 481.1 Geology - 471.4 Seawater, Tides and Waves - 471.1 Oceanography, General - 444.2 Groundwater - 444 Water Resources - 406.2 Roads and Streets
DOI:10.3969/j.issn.1002-6819.2010.01.011
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 8>
Accession number:20101512841216
Title:Design and implementation of management and service network platform in vegetable safety production
Authors:Chen, Hongyan (1); Nie, Yimin (1); Che, Mingliang (1); Li, Kehua (2); Cui, Yaliang (3)
Author affiliation:(1) College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China; (2) Land Resources Bureau of Juye in Shandong Province, Juye 274900, China; (3) Land Resources Bureau of Laiyang in Shandong Province, Laiyang 265200, China
Corresponding author:Nie, Y.
      (ymnie@sdau.edu.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:232-237
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 furthering the safety and information and modernization of vegetable production, and promoting vegetable safety production, based on the comprehensive national demonstration projects and as an example of state-level vegetable production zone-Shouguang, the management and service network platform of vegetable safety production was designed and developed by full utilizing the technologies of J2EE, GIS, internet, wireless communication, DBMS and mobile phone or GPS. The platform involved the cable network system of vegetable safety production based on WebGIS, the recommended nitrogen balance system based on GIS and wireless communication, and the visualization system of vegetable safety production based on 3DGIS. Through the platform, government departments could real-time monitor vegetable safety production and provide the basis for decision-making. Vegetable producers could be offered with the recommended nitrogen and cultivation techniques, morover, the recommended nitrogen balance system was expanded to low-end hardware mobile phone, which achieved the extension of production information techniques to fields.
Number of references:16
Main heading:Vegetables
Controlled terms:Cultivation - Geographic information systems - Mobile phones - Nitrogen - Product design - Telecommunication equipment - Telephone - Telephone sets - Telephone systems - Visualization  - Wireless networks - Wireless telecommunication systems
Uncontrolled terms:Cable networks - Demonstration project - Government departments - Information techniques - Networks - Nitrogen balance - Production zones - Real-time monitor - Safety production - Service network  - Visualization system - Web-GIS - Wireless communications
Classification code:913.1 Production Engineering - 723.3 Database Systems - 804 Chemical Products Generally - 821.3 Agricultural Methods - 821.4 Agricultural Products - 902.1 Engineering Graphics - 903.3 Information Retrieval and Use - 722.4 Digital Computers and Systems - 718.1 Telephone Systems and Equipment - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716.3 Radio Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 722.3 Data Communication, Equipment and Techniques
DOI:10.3969/j.issn.1002-6819.2010.01.041
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 9>
Accession number:20101512841241
Title:Changes of respiration intensity and quality of different varieties of fresh walnut during cold storage
Authors:Ma, Yanping (1); Liu, Xinghua (2); Yuan, Debao (3); Wang, Limei (2); Yuan, Yifei (2)
Author affiliation:(1) College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China; (3) Department of Light Industry and Food, South China University of Technology, Guangzhou 510640, China
Corresponding author:Liu, X.
      (liuxh2830@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:370-374
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 purpose of this research was to discuss the quality changes of 'Liaohe4', 'Xifu1' and 'Xifu2' fresh walnut which were packed in 0.03 mm polyethylene bag and stored at about (0&plusmn;1)&deg;C, the relative humidity of 70%-80%, and the main indicators were determined regularly. The results indicated that, during the initial storage (15 d), the respiration rate of fresh walnut showed downtrend sharply, then low and stabilized. There were obvious differences on the content of moisture, fat, protein and amino acid among the three cultivars. Protein content changed slightly, the fat, vitamin E and fatty acid content showed a downward trend. The amino acid content was the highest when storing for 30 d, then followed by the overall downward trend. Acid value and peroxide value showed an upward trend and acid value, peroxide value, fine fruit rate and sensory quality dropped drastically after 60 days' storage. The results show that the different varieties have obviously different qualities, the suitable storage period is 60 d for fresh walnut and L4 is the best in quality during storage.
Number of references:16
Main heading:Quality control
Controlled terms:Amino acids - Atmospheric humidity - Cold storage - Customer satisfaction - Fatty acids - Moisture - Organic acids - Oxidation - Proteins - Total quality management
Uncontrolled terms:Acid value - Fresh walnut - Peroxide value - Protein contents - Quality change - Relative humidities - Respiration rate - Sensory qualities - Storage periods - Upward trend  - Vitamin-E
Classification code:922.2 Mathematical Statistics - 913.3 Quality Assurance and Control - 912.2 Management - 912 Industrial Engineering and Management - 804.1 Organic Compounds - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 694.4 Storage - 644.3 Refrigeration Equipment and Components - 461 Bioengineering and Biology - 443.1 Atmospheric Properties
DOI:10.3969/j.issn.1002-6819.2010.01.066
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 10>
Accession number:20101512841190
Title:Method for spatial variety of soil organic matter based on radial basis function neural network
Authors:Li, Qiquan (1); Wang, Changquan (1); Yue, Tianxiang (2); Li, Bing (1); Yang, Juan (1)
Author affiliation:(1) College of Resources and Environment, Sichuan Agricultural University, Yaan 625014, China; (2) Institute of Geographic Sciences and Natural Resources Research, Chinese Acad. of Sci., Beijing 100101, China; (3) Graduate School of the Chinese Acad. of Sci., Beijing 100039, China
Corresponding author:Wang, C.
      (w.changquan@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:87-93
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:Fast and accurate simulation of the spatial distribution of soil properties from the study on soil spatial variability and spatial interpolation was the basis for precision agriculture and environmental protection. In this paper, 80 topsoil samples were collected in a 40 km² test area in Meishan, Sichuan Province. Nonlinear mapped relations between spatial coordinates and neighbor samples and the content of soil organic matter were established based on radial basis function neural network (RBF2) to simulate the distribution of the content of soil organic matter in the test area. Compared with ordinary kriging method (OK) and radial basis function neural network method only using spatial coordinates as inputs of net (RBF1), the predicted errors achieved by RBF2 were much smaller, which were reduced by 9.87%, 13.09% and 1.97%, 2.36%, respectively; even samples were cut in half, the predicted error was still reduced by 10.23% and 2.33%, respectively, compared with OK and RBF1 which used in all samples. Besides, RBF2, which was able to make the interpolation maps and had smaller difference comparatively in different samples, could express the spatial heterogeneity of soil organic matter well. Thus, the spatial heterogeneity information of soil properties could be achieved exactly and quickly by the method of radial basis function neural network which used spatial coordinates and neighbor samples information as inputs of net.
Number of references:30
Main heading:Radial basis function networks
Controlled terms:Attitude control - Biogeochemistry - Biological materials - Error analysis - Interpolation - Neural networks - Organic compounds - Size distribution - Soil surveys - Soil testing  - Soils
Uncontrolled terms:Fast and accurate simulations - Ordinary kriging - Organic matter - Precision Agriculture - Predicted error - Radial basis function neural networks - Sichuan province - Soil organic matters - Soil property - Spatial coordinates  - Spatial distribution - Spatial heterogeneity - Spatial interpolation - Spatial variability - Topsoil samples
Classification code:933.1 Crystalline Solids - 656.1 Space Flight - 723.4 Artificial Intelligence - 731.3 Specific Variables Control - 801.2 Biochemistry - 804.1 Organic Compounds - 921.6 Numerical Methods - 922.2 Mathematical Statistics - 931.2 Physical Properties of Gases, Liquids and Solids - 654.1 Rockets and Missiles - 406.2 Roads and Streets - 423 Non Mechanical Properties and Tests of Building Materials - 461.1 Biomedical Engineering - 652.3 Aircraft Instruments and Equipment - 461.2 Biological Materials and Tissue Engineering - 483.1 Soils and Soil Mechanics - 531.2 Metallography - 481.2 Geochemistry
DOI:10.3969/j.issn.1002-6819.2010.01.015
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 11>
Accession number:20101512841234
Title:Effect of grinding extent of vinegar residue substrate on photosynthesis of pepper seedlings
Authors:Liu, Chaojie (1); Guo, Shirong (1); Shu, Sheng (1); Liu, Shuren (1); Wang, Liping (1)
Author affiliation:(1) College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author:Guo, S.
      (srguo@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:1
Issue date:January 2010
Publication year:2010
Pages:330-334
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to promote the application of vinegar residue substrate as seedlings substrates, according to large granule and high porosity of vinegar residue substrate, the experiment was carried out with semi-wet sieve to study the effect of different grinding extent of residue substrate on growth and photosynthesis of pepper seedlings. The results showed that with the increase of grinding extent, dry bulk density, saturated bulk density, water-holding porosity (WHP) and WHP/AP of vinegar residue substrate were gradually increased, while total porosity, aeration porosity (AP) were gradually reduced. With vinegar residue substrate semi-wet grinding (diameter of sieve was 6 mm) only once (T2), the growth of pepper seedlings was improved, the photosynthetic pigment contents, net photosynthetic rate (Pn) and actual photochemical efficiency of PS II(&Phi;PS II) were obviously increased. The above results showed that vinegar residue substrate semi-wet grinding (diameter of sieve was 6 mm) only once (T2) was the optimum grinding extent for growth of pepper seedlings.
Number of references:17
Main heading:Substrates
Controlled terms:Acetic acid - Chlorophyll - Fluorescence - Grinding (comminution) - Grinding (machining) - Photosynthesis - Porosity - Porphyrins - Seed - Sieves
Uncontrolled terms:Aeration porosity - Bulk density - Chlorophyll fluorescence - High porosity - Net photosynthetic rate - Photochemical efficiency - Photosynthetic pigments - Total porosity - Wet grinding
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 801 Chemistry - 801.2 Biochemistry - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1 Organic Compounds - 813.1 Coating Techniques - 821.4 Agricultural Products - 741.1 Light/Optics - 405.1 Construction Equipment - 461 Bioengineering and Biology - 502.2 Mine and Quarry Equipment - 714.2 Semiconductor Devices and Integrated Circuits - 604.2 Machining Operations - 606.2 Abrasive Devices and Processes - 712.1 Semiconducting Materials - 605 Small Tools and Hardware
DOI:10.3969/j.issn.1002-6819.2010.01.059
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 12>
Accession number:20101512841237
Title:Land use change in Heihe catchment on loess tableland based on CA-Markov model
Authors:Li, Zhi (1); Liu, Wenzhao (2); Zheng, Fenli (2)
Author affiliation:(1) College of Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) Institute of Soil and Water Conservation, Ministry of Water Resources, Chinese Acad. of Sci., Yangling 712100, China
Corresponding author:Li, Z.
      (lizhibox@126.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:346-352
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:Studying the land use changes in the Loess Plateau can provide important information for decision-making of ecologic construction. Using CA-Markov (Celluar Automata) model, the trend, rate, type of land use change from 1985 to 2000 and their relations with terrain in the Heihe watershed in the tableland-gully region of the Loess Plateau were analyzed, and the land use scenario in 2015 was simulated. Results showed that farmland and medium density grassland were the dominant land use types. Forest and farmland decreased, grassland and construction land increased while other land use types changed little from 1985 to 2000. The major transformation types were mutual conversion between forest and grassland, and farmland conversion to other land use types. Land use changes mainly occurred in the gully regions. The simulated result by CA-Markov model indicated that each land use type from 2000 to 2015 would keep the change trend from 1985 to 2000. Therefore, it is urgent to protect farmland, impel the Grain for Green Project and promote regional sustainable development.
Number of references:25
Main heading:Land use
Controlled terms:Catchments - Farms - Landforms - Markov processes - Strategic planning
Uncontrolled terms:Construction land - Forest and grassland - Land use type - Land-use change - Land-use scenario - Loess Plateau - Markov model - Regional sustainable development - Simulated results - Trend prediction
Classification code:922.1 Probability Theory - 912.2 Management - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 481.1 Geology - 444 Water Resources - 442.2 Land Reclamation - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2010.01.062
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 13>
Accession number:20101512841183
Title:Effects of minimum or no-tillage system and straw returning on extreme soil moisture and yield of winter wheat
Authors:L&#252;, Meirong (1); Li, Zengjia (1); Zhang, Tao (1); Ning, Tangyuan (1); Zhao, Jianbo (1); Li, Hongjie (1)
Author affiliation:(1) State Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Taian 271018, China; (2) Weihai Agricultural Bureau, Weihai 264200, China
Corresponding author:Li, Z.
      (lizj@sdau.edu.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:41-46
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 and yield of winter wheat were evaluated in a field experiment involving tillage (conventional tillage, subsoiling, harrowing, rotary tillage, and no-tillage) plus straw application (straw returning and no-straw returning) under a rotation of wheat and maize, and the aim was to utilize rainwater effectively and alleviate the deficit of water resources in agriculture. The results showed that subsoiling improved soil moisture in the period of waterabundance and yield of winter wheat under straw returning and no-straw returning over conventional tillage, especially subsoiling tillage plus straw returning, which enhanced by 25.74% and 11.45% over conventional tillage, respectively. Straw factor played a leading role in soil moisture in the period of water abundance, both straw factor and tillage factor played important roles in soil moisture in the period of water deficit and yield of winter wheat. The interactive effects between no-tillage, subsoiling, harrowing and straw returning improved rainwater collection and winter wheat yield. The results also show that yield of winter wheat is not closely related with soil moisture in the period of water deficit, however, significantly relates with soil moisture in the period of water abundance.
Number of references:19
Main heading:Agricultural machinery
Controlled terms:Cultivation - Moisture determination - Soil moisture - Water resources
Uncontrolled terms:Conventional tillage - Extreme soil moisture - Field experiment - Interactive effect - No tillage - No-tillage systems - Returning - Water deficits - Winter wheat
Classification code:444 Water Resources - 483.1 Soils and Soil Mechanics - 821.1 Agricultural Machinery and Equipment - 821.3 Agricultural Methods - 944.2 Moisture Measurements
DOI:10.3969/j.issn.1002-6819.2010.01.008
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 14>
Accession number:20101512841238
Title:Experiments on clarification of orange juice and fouling resistances by using ceramic microfiltration membrane
Authors:Zeng, Jianxian (1); Zheng, Lifeng (1); Liu, Junfeng (1)
Author affiliation:(1) College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Corresponding author:Zeng, J.
      (zengjianxian@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:353-358
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 purpose of this work was to study the clarification of orange juice, membrane fouling resistances and cleaning methods by microfiltration. Ceramic membranes with a pore diameter of 0.2 &mu;m were employed. The changes of permeate flux and the efficiency of retention were investigated during the clarification process. It was found that, at temperature 30&deg;C, transmembrane pressure 0.16 MPa and cross-flow velocity 4 m/s, the steady-state permeate flux reached 22.4 L/(m²&middoth) in the total recirculation experiment, however the permeate flux was only 10.6 L/(m²&middoth) in the concentration experiment, which corresponded to the volume concentration factor of 12 and the percentage yield of 91.67% for the clarified juice. The turbidity of clarified juice was 0.62 NTU, the percentage of clarification reached as high as 99.93%, and the main nutrition elements of clarified juice change insignificantly. On the basis of the fouling resistance model, the effects of operating parameters on various resistances and the kinetics of membrane fouling were studied in detail. The results indicate that transmembrane pressure affects significantly the reversible polarized layer resistance; the increase of cross-flow velocity decreases various polarized layer resistances, but affects insignificantly the irreversible fouling resistance; the various resistances decrease with increasing temperature; the fouling kinetics can be describe by a pseudo-second-order equation. The cleaning procedures for fouled membranes were investigated. The results show that permeate fluxes are recovered rapidly by using deionized water, the mixed solution containing 1% NaOH and 0.5% NaClO, 0.2% HNO<inf>3</inf> solution to clean the membranes in turn.
Number of references:16
Main heading:Clarification
Controlled terms:Ceramic membranes - Clarifiers - Deionized water - Dyes - Experiments - Flow velocity - Fruit juices - Membrane fouling - Microfiltration - Optical cables  - Turbidity
Uncontrolled terms:Ceramic microfiltration membranes - Clarification process - Cleaning methods - Cleaning procedures - Crossflow velocities - Fouling kinetics - Fouling resistance - Irreversible fouling - Membrane resistance - Mixed solution  - Operating parameters - Orange juice - Permeate flux - Polarized layers - Pore diameters - Pseudo-second-order equations - Recirculations - Transmembrane pressures - Volume concentration
Classification code:803 Chemical Agents and Basic Industrial Chemicals - 812.1 Ceramics - 822.2 Food Processing Operations - 802.3 Chemical Operations - 822.3 Food Products - 943.2 Mechanical Variables Measurements - 951 Materials Science - 901.3 Engineering Research - 802.1 Chemical Plants and Equipment - 452.2 Sewage Treatment - 522 Gas Fuels - 539.1 Metals Corrosion - 445.1 Water Treatment Techniques - 631 Fluid Flow - 741.1 Light/Optics - 741.1.2 Fiber Optics - 717.2 Optical Communication Equipment
DOI:10.3969/j.issn.1002-6819.2010.01.063
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 15>
Accession number:20101512841235
Title:Methods for early-warning of cultivated land protection in outshirts of megapolis
Authors:Zhao, Tingting (1); Jiang, Guanghui (2); Zhang, Fengrong (1); Duan, Zengqiang (1); He, Yufeng (1); Ma, Suhua (4); Miao, Limei (5)
Author affiliation:(1) Department of Land Resources Management, China Agricultural University, Beijing 100193, China; (2) State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China; (3) College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China; (4) China Land Surveying and Planning Institute, Beijing 100035, China; (5) Land Consolidation and Rehabilitation Center, Ministry of Land and Resources, Beijing 100035, China
Corresponding author:Jiang, G.
      (macrophage@126.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:335-340
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:It is the county level that is the most reasonable scale for research of arable land protection and warning. To protect arable land scientifically and rationally, prediction of the trend of its quantity and quality, with land use planning, annual plan and agricultural land classification and gradation results, is supposed to be an effective means. An early-warning study of cultivated land protection was carried out based on constructing a warning system from the aspects of farmland quantity, stability of grain yield capacity, spatial changes of the volatile nutrient and harmony degree between development and land protection, taking Shunyi District, Beijing, as study area. Among the four aspects, the first three were early-warning types of single index, the last one was the type of an comprehensive one. The single index early-warnings results indicated that the farmland quantity changes in Shunyi District, Beijing, took on light warning in 2007 and 2008, and no warnings in 2009 and 2010; the grain yield production capacity showed middle warnings in 2007 and 2009, serious warning in 2008, light warnings in 2010; and the nutrient changes differs from one another. Moreover the results of the comprehensive indices early-warning indicated a serious warning result in 2007, middle warnings in 2008 and 2009, a light one in 2010. This paper provide an efficient method to carry on the early-warning of cultivated land, which can pre-warn the quantity changes and quality changes of the cultivated land from both temporal scales and spatial scales, and it was closely connected with the practice of land resource management and agriculture production.
Number of references:9
Main heading:Zoning
Controlled terms:Grain (agricultural product) - Land use - Nutrients - Planning - Regional planning - Systems analysis
Uncontrolled terms:Agricultural land - Arable land - County level - Cultivated lands - Early warning - Early warning systems - Efficient method - Grain yield - Harmony degree - Land resources  - Land Use Planning - Megapolis - Quality change - Shunyi District - Spatial changes - Spatial scale - Study areas - Temporal scale - Warning systems
Classification code:961 Systems Science - 912.3 Operations Research - 912.2 Management - 822.3 Food Products - 821.4 Agricultural Products - 821.2 Agricultural Chemicals - 731.1 Control Systems - 461.9 Biology - 454.3 Ecology and Ecosystems - 442.2 Land Reclamation - 403.2 Regional Planning and Development - 403.1 Urban Planning and Development - 403 Urban and Regional Planning and Development
DOI:10.3969/j.issn.1002-6819.2010.01.060
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 16>
Accession number:20101512841230
Title:Rapid and high-efficient composting process by bag-type of brewery sludge and cottonseed cake
Authors:Pan, Fei (1); Zeng, Qingfu (2); Chen, Wu (2); Xiong, Zhongduo (1)
Author affiliation:(1) School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; (2) Engineering Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Edu., Wuhan University of Science and Engineering, Wuhan 430073, China
Corresponding author:Zeng, Q.
      (qfzeng@wuse.edu.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:309-312
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 dynamic composting process of wastewater sludge from China Resources (Wuhan) Breweries Co., Ltd., the dynamics of different operational and evaluating indices, such as temperature, moisture content, pH, humic acid, total organic carbon, total nitrogen, water-soluble organic carbon and germination index (GI) and so on, during the treatment process were discussed. The results indicated that cottonseed cake used as compost amendment of brewery sludge. Brewery sludge and cottonseed cake mixed in accordance with the ratio of 4:1 (add a small amount of urea, adjust C/N ratio of 30:1, 60% moisture content). 50 kg was a unit which was packed into a bag for sealing and micro-aerobic composting fermentation. The product of composting was mature after 20 days, which was loose and odorless. Almost mature output could meet the land application control standard of MSS and the class A standard of US EPA. The study provides the technical basis for new process of establishing rapid and high-efficient processing Brewery sludge.
Number of references:16
Main heading:Sludge disposal
Controlled terms:Biodegradation - Biological materials - Biological water treatment - Breweries - Composting - Degradation - Environmental Protection Agency - Microbiology - Moisture determination - Organic acids  - Organic carbon - Urea - Wastewater - Wastewater disposal - Wastewater treatment - Water content
Uncontrolled terms:Aerobic composting - C/N ratio - Class A - Compost amendments - Composting process - Cotton-seed cakes - Efficient composting - Evaluating index - Germination index - Humic acid  - Land applications - Moisture contents - New process - Total nitrogen - Total Organic Carbon - Treatment process - Wastewater sludge - Water-soluble organic carbon
Classification code:461.9.2 Microbiology - 801.2 Biochemistry - 802.2 Chemical Reactions - 804.1 Organic Compounds - 805.1.1 Biochemical Engineering - 815.1.1 Organic Polymers - 821.5 Agricultural Wastes - 822.1 Food Products Plants and Equipment - 944.2 Moisture Measurements - 461.8 Biotechnology - 402.1 Industrial and Agricultural Buildings - 444 Water Resources - 445.1 Water Treatment Techniques - 452 Municipal and Industrial Wastes; Waste Treatment and Disposal - 452.2 Sewage Treatment - 452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 454.2 Environmental Impact and Protection - 461.2 Biological Materials and Tissue Engineering
DOI:10.3969/j.issn.1002-6819.2010.01.055
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 17>
Accession number:20101512841222
Title:Simulation of photovoltaic grid-connected generation system with maximum power point tracking and voltage control strategy
Authors:Wu, Hongbin (1); Tao, Xiaofeng (1); Ding, Ming (1)
Author affiliation:(1) Photovoltaic System Research Center of Ministry of Education, Hefei University of Technology, Hefei 230009, China
Corresponding author:Wu, H.
      (hfwuhongbin@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:267-271
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 fluctuating of the reactive load could largely affect the terminal voltage in distribution systems. By controlling the AC voltage of grid-connected bus in photovoltaic generation system, it could improve the voltage level of distribution systems. Based on the structure of the photovoltaic grid-connected system, it established the dual-loop feedback control strategy. The voltage loop was considered as the external loop, and the grid-connected current loop as the internal loop. The grid-connected current was decoupled into active current and reactive current via the abc/dqo coordinates transformation. The DC voltage reference from the maximum power point tracking (MPPT) used to adjust the active current, and the AC voltage reference from the system voltage used to dominate the reactive current. In this way, it achieved the MPPT and voltage control technology of the three phase photovoltaic grid-connected generation. The simulation results show that the MPPT and voltage control strategy can not only implement the maximum power point tracking but also control the AC voltage of grid-connected bus. It can further upgrade the application future of photovoltaic grid-connected generation system.
Number of references:17
Main heading:Mesh generation
Controlled terms:Electric inverters - Electric potential - Optical flows - Photovoltaic effects - Pumps - Voltage control - Voltage measurement - Voltage regulators
Uncontrolled terms:Ac voltage - AC voltage reference - Active current - Coordinates transformation - Current loop - DC voltage - Distribution systems - Dual-loop feedback - Generation systems - Grid connected systems  - Grid-connected - Internal loops - Maximum Power Point Tracking - Photovoltaic generation system - Photovoltaic grid-connected - Reactive currents - Reactive loads - Simulation - Simulation result - System voltage  - Terminal voltages - Three phase - Voltage levels
Classification code:942.2 Electric Variables Measurements - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 741.1 Light/Optics - 732.1 Control Equipment - 731.3 Specific Variables Control - 723.5 Computer Applications - 713.5 Other Electronic Circuits - 712.1 Semiconducting Materials - 704.2 Electric Equipment - 701.1 Electricity: Basic Concepts and Phenomena - 618.2 Pumps
DOI:10.3969/j.issn.1002-6819.2010.01.047
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 18>
Accession number:20101512841239
Title:Comparison of effects of ultra-high pressure and heat sterilization on qualities of freshly-squeezed pineapple juice
Authors:Li, Biansheng (1); Zhang, Wei (1); Mei, Canhui (1)
Author affiliation:(1) College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
Corresponding author:Li, B.
      (febshli@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:1
Issue date:January 2010
Publication year:2010
Pages:359-364
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:Sensory quality, nutrient components and physicochemical properties of pineapple juice were studied, based on achievement of commercial sterilization requirements by ultra-high pressure (UHP) treatment and heat treatment separately. The results showed that total number of bacteria declined with the increase of pressure (300-500 MPa) and arrived commercial asepsis at 400 MPa for 10min. Besides, the sterilization was at the same level by heat treatment (85&deg;C for 5 min); pH value, total acid, total sugar, soluble solid content of pineapple juice had no significant change in both UHP treatment and heat treatment (P&gt;0.05); the system of juice was stable by UHP treatment; the color of juice by UHP was better than that of heat treatment, while the value of L*, a* and b* changed significantly (P&lt;0.05) after UHP treatment; the retention of antitype ascorbic acid appeared to be 94.92%, which was much higher than that of the heat treatment; the results of quantitative descriptive analysis (QDA) showed that the pineapple juice after UHP treatment was more closer to control sample than that under heat treatment in color, flavor and taste. It is concluded that UHP treatment can effectively inactivate the microbe and maintain the flavor and quality of pineapple juice.
Number of references:17
Main heading:Quality control
Controlled terms:Agricultural products - Bacteria - Customer satisfaction - Fruit juices - Heat treatment - Ketones - Organic acids - Organic polymers - Sterilization (cleaning) - Sugar (sucrose)  - Total quality management
Uncontrolled terms:Ascorbic acids - Control samples - Heat sterilization - Nutrient components - pH value - Physicochemical property - Pineapple juice - Quantitative descriptive analysis - Sensory qualities - Soluble solid content  - Sterilization - Ultrahigh pressure
Classification code:922.2 Mathematical Statistics - 821.4 Agricultural Products - 822.2 Food Processing Operations - 822.3 Food Products - 912 Industrial Engineering and Management - 912.2 Management - 913.3 Quality Assurance and Control - 815.1.1 Organic Polymers - 802.3 Chemical Operations - 801.2 Biochemistry - 537.1 Heat Treatment Processes - 462.1 Biomedical Equipment, General - 461.9 Biology - 804.1 Organic Compounds
DOI:10.3969/j.issn.1002-6819.2010.01.064
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 19>
Accession number:20101512841229
Title:Preparation and properties of palygorskite clay modified woodceramics from bagasse/wheat straw
Authors:Wu, Wentao (1); Chen, Tianhu (1); Xu, Xiaochun (1)
Author affiliation:(1) School of Natural Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author:Chen, T.
      (chentianhu168@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:1
Issue date:January 2010
Publication year:2010
Pages:305-308
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A new technique has been developed to prepare palygorskite clay modified woodceramics using bagasse or wheat straw as raw material and phenolresin as adhesive. The composites were prepared and some properties of palygorskite clay modified woodceramics such as density, porosity, strength and resistivity were tested at the same time. A systematic analysis of the material properties, forming mechanism and regularity of composite is made. Effects of the formula of raw materials, the consistencies of adhesive and the temperature on the technique and the properties of composite were revealed. It is shown that the bagasse and wheat straw can be used to produce palygorskite clay modified woodceramics with this technique and temperature influences the properties of composite distinctly. Sample sintered between 700-800&deg;C can advance strength while resistivity of woodceramics don't change. The presented work provides useful ideas for the study of the bagasse, wheat straw and palygorskite clay.
Number of references:21
Main heading:Clay minerals
Controlled terms:Bagasse - Sintering
Uncontrolled terms:Palygorskite clay - Palygorskites - Phenolresin - Properties - Woodceramics
Classification code:812.2 Refractories - 811 Cellulose, Paper and Wood Products - 802.3 Chemical Operations - 821.5 Agricultural Wastes - 536.1 Powder Metallurgy Operations - 524 Solid Fuels - 482.2 Minerals - 533.1 Ore Treatment
DOI:10.3969/j.issn.1002-6819.2010.01.054
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 20>
Accession number:20101512841225
Title:Tillage effects on CH<inf>4</inf> and N<inf>2</inf>O emission from double cropping paddy field
Authors:Bai, Xiaolin (1); Zhang, Hailin (1); Chen, Fu (1); Sun, Guofeng (1); Hu, Qing (2); Li, Yong (2)
Author affiliation:(1) Key Laboratory of Farming System, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; (2) Ningxiang Agricultural Bureau, Changsha, Hunan Province, Changsha 410600, China
Corresponding author:Zhang, H.
      (hailin@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:1
Issue date:January 2010
Publication year:2010
Pages:282-289
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:Greenhouse gas emission is becoming a very important issue with the continuous increasing in the global temperature. In order to evaluate carbon sequestration potential of paddy and reducing emission of greenhouse gas, tillage effects on CH<inf>4</inf> and N<inf>2</inf>O emissions from paddy soil and the trade-off relationship between CH<inf>4</inf> and N<inf>2</inf>O were explored. The closed chamber method was used to measure the CH<inf>4</inf> and N<inf>2</inf>O emission from the paddy field with the treatments of conventional tillage (CT), rotary tillage (RT), no-tillage (NT) at Ningxiang County, Hunan Province. The results show as following. 1) CH<inf>4</inf> emission mainly comes from the late rice paddy, which accounted for 69%, 67%, 73% of the studied period under CT, RT and NT, respectively; 2) CH<inf>4</inf> emission of all treatments attributed to less than 1% in the winter-fallow season, while the differences of the emission among three treatments are significant with RT&gt;CT&gt;NT; 3) N<inf>2</inf>O emission shows highly temporal variability that N<inf>2</inf>O emission in early rice paddy is RT&gt;NT&gt;CT, while in late rice paddy is NT&gt;RT&gt;CT, and the N<inf>2</inf>O is absorbed in winter-fallow season; 4) CT is beneficial to decreasing N<inf>2</inf>O emission during the studied period, while NT is beneficial to decreasing CH<inf>4</inf> emission; 5) During the studied period, correlation between CH<inf>4</inf> and N<inf>2</inf>O shows negative significantly, but the correlation between CH<inf>4</inf> and N<inf>2</inf>O in winter-fallow season is not significant. In general, though increasing N<inf>2</inf>O emission appreciably, NT is beneficial to decreasing CH<inf>4</inf> emission, and the comprehensive greenhouse effect of N<inf>2</inf>O and CH<inf>4</inf> is also decreased.
Number of references:26
Main heading:Leakage (fluid)
Controlled terms:Agricultural machinery - Agriculture - Air quality - Carbon dioxide - Commerce - Computerized tomography - Gas emissions - Global warming - Greenhouse effect - Greenhouse gases  - Greenhouses - Methane
Uncontrolled terms:Carbon sequestration potential - Closed-chamber method - Conventional tillage - Double cropping - Global temperatures - Hunan province - N<inf>2</inf>O - No tillage - Paddy fields - Paddy soils  - Rice paddy - Temporal variability - Tillage effects - Trade-off relationship
Classification code:911.4 Marketing - 619.1 Pipe, Piping and Pipelines - 644.2 Refrigerants - 723.5 Computer Applications - 801 Chemistry - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment - 821.6 Farm Buildings and Other Structures - 911.2 Industrial Economics - 531 Metallurgy and Metallography - 402.1 Industrial and Agricultural Buildings - 443.1 Atmospheric Properties - 451 Air Pollution - 451.1 Air Pollution Sources - 522 Gas Fuels - 451.2 Air Pollution Control - 452.3 Industrial Wastes - 461.1 Biomedical Engineering - 483.1 Soils and Soil Mechanics - 452.1 Sewage
DOI:10.3969/j.issn.1002-6819.2010.01.050
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 21>
Accession number:20101512841226
Title:Application of biomass pyrolysis oil to direct injection diesel engine
Authors:Huang, Yongcheng (1); Shang, Shang (1); Wang, Li (1); Du, Moutao (1); Guo, Hejun (1)
Author affiliation:(1) School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Corresponding author:Huang, Y.
      (huangyc@mail.xjtu.edu.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:290-294
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:Biomass pyrolysis oil (BPO) produced through biomass fast pyrolysis process is mainly composed of oxygenated organics and water, thereby restricting its direct use as fuel is essential. However, the use of BPO in diesel engines can be realized by developing emulsions from BPO and diesel fuel. In this paper, the emulsion with 10 wt% BPO in No.0 diesel, represented by BPO10, was produced by using ultrasonic emulsification method after determining the optimum hydrophilic and lipophilic balance (HLB) value of the emulsifier for the emulsions from BPO and diesel. Then, the combustion and emission characteristics of an unmodified direct injection diesel engine operating on BPO10 were studied and compared with those of No.0 diesel operation. The results show that the optimum HLB value of the emulsifier for the emulsions from BPO and diesel is about 5.8. The engine operating on BPO10 exhibits a later combustion start point, displays a higher peak value of premixed burning rate and a slightly lower peak value of diffusion burning rate, and has a lower peak combustion pressure and a shorter combustion duration when compared with No.0 diesel. In addition, the brake specific fuel consumption is higher and the effective thermal efficiency is comparable for BPO10 operation. NO<inf>x</inf> and smoke emissions with BPO10 were reduced significantly, while HC and CO emissions were increased when compared with those of No.0 diesel operation.
Number of references:17
Main heading:Diesel engines
Controlled terms:Biomass - Combustion - Diesel fuels - Emulsification - Engines - Fuel consumption - Leakage (fluid) - Pyrolysis - Smoke - Thermogravimetric analysis
Uncontrolled terms:Biomass pyrolysis oil - Brake specific fuel consumption - Burning rate - CO emissions - Combustion duration - Combustion pressure - Combustion start point - Direct injection diesel engines - Direct use - Emission characteristics  - Fast pyrolysis - Oxygenated organics - Peak values - Premixed burning - Smoke Emission - Thermal efficiency - Ultrasonic emulsification
Classification code:619.1 Pipe, Piping and Pipelines - 654.2 Rocket Engines - 801 Chemistry - 801.3 Colloid Chemistry - 617.3 Steam Engines - 802.2 Chemical Reactions - 804 Chemical Products Generally - 805.1.1 Biochemical Engineering - 821.5 Agricultural Wastes - 802.3 Chemical Operations - 612.2 Diesel Engines - 452.1 Sewage - 452.3 Industrial Wastes - 483.1 Soils and Soil Mechanics - 521 Fuel Combustion and Flame Research - 451.1 Air Pollution Sources - 521.1 Fuel Combustion - 525.1 Energy Resources and Renewable Energy Issues - 525.3 Energy Utilization - 612 Engines - 523 Liquid Fuels
DOI:10.3969/j.issn.1002-6819.2010.01.051
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 22>
Accession number:20101512841194
Title:Effect of mulching with straw composts on soil properties of landscape
Authors:Shi, Lianhui (1); Han, Guohua (2); Zhang, Zhiguo (3); Liu, Dengmin (1); Wang, Qingping (2)
Author affiliation:(1) College of Resource and Environment, Shandong Agricultural University, Tai'an 271018, China; (2) Gardens Management Office of Linyi, Linyi 276000, China; (3) School of Ecological Technology and Engineering, Shanghai Institute of Technology, Shanghai 200235, China
Corresponding author:Zhang, Z.
      (zgzhang@sit.edu.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:113-117
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 objective of the research is to realizing the effects of mulching with different straw composts and thickness on landscape soil properties. The corn, wheat and coton straw composts were used as mulch with 3, 6 and 9 cm thick, to study the effects of landscape mulching with different straw composts and different thickness treatments on soil properties. The results showed that in the upper layer (0-10 cm) soil bulk density were reduced, the soil moisture, soil permeability were increased significantly with mulch of three straw composts. The ideal thickness was 6 cm for each straw compost if mulched for one year, and if mulched for two years, the 9 cm thick mulch of corn and wheat straw composts and 6 cm thick of cotton straw compost showed the best effect to soil properties. More than 96% of weed population were reduced with 6 cm mulch, and inhibition rate were 100% with 9 cm mulch. After one year's mulching the soil organic matter and nutrients were increased significantly. More than 90% soil sediments in runoff water were reduced with the straw composts mulching. Soil temperature variation were less fluctuating with the straw composts mulching. Mulch with agricultural waste on landscape can save water, fertilizer and labor, accord with the demands of economical landscape building, and the ecological benefits are remarkable, so it is worth of promoting and application.
Number of references:23
Main heading:Composting
Controlled terms:Agricultural wastes - Moisture determination - Soil moisture - Waste treatment
Uncontrolled terms:Different thickness - Ecological benefits - Inhibition rate - Landscape soils - Landscapes - Mulch - Runoff water - Soil bulk density - Soil organic matters - Soil permeability  - Soil property - Soil sediments - Soil temperature variations - Upper layer - Wheat straws
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal - 452.4 Industrial Wastes Treatment and Disposal - 483.1 Soils and Soil Mechanics - 821.5 Agricultural Wastes - 944.2 Moisture Measurements
DOI:10.3969/j.issn.1002-6819.2010.01.019
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 23>
Accession number:20101512841185
Title:Effect of liquid film mulching on growth and yield of summer maize under different soil moisture conditions
Authors:Qiang, Xiaoman (1); Zhou, Xinguo (1); Li, Caixia (1); Guo, Dongdong (1); Liu, Zugui (1); Zhang, Junpeng (1)
Author affiliation:(1) Key Laboratory for Crop Water Requirement and Regulation, Ministry of Agriculture, Xinxiang 453003, China; (2) Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China
Corresponding author:Zhou, X.
      (zhouxg01@tom.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:54-60
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 decreasing agricultural pollution caused by plastic mulching, impacts of liquid film mulching (LF) on crop growth and grain yield of summer maize were studied, which results were compared to the control treatment (CK). Results indicated that plant height and stem diameter of LF were greater than that of CK, and the difference was the most significant under lower soil moisture condition. Under lower soil moisture condition, leaf area index (LAI) of LF was greater than that of CK in the earlier growing stage, while smaller in the later growing stage. Under medium and higher soil moisture conditions, however, LAI of LF was higher than that of CK in the whole growing period. LF increased the photosynthetic and transpiration rate significantly. Under lower soil moisture condition, the grain yield of LF increased by 56.97%, and the ratio of output to input was 1.695. Under higher soil moisture condition, the grain yield of LF only increased by 15.57%, and the ratio of output to input of LF was smaller than that of CK. The study indicates that liquid film mulching is effective for drought-resistance, saving irrigation water amount and improving yield.
Number of references:18
Main heading:Film growth
Controlled terms:Crops - Forestry - Grain (agricultural product) - Grain growth - Irrigation - Liquid films - Moisture determination - Pollution control - Soil moisture - Water supply
Uncontrolled terms:Agricultural pollution - Crop growth - Grain yield - Growing development - Growing period - Growth and yield - Irrigation waters - Leaf area index - Plant height - Plastic mulching  - Stem diameter - Summer maize - Transpiration rates
Classification code:944.2 Moisture Measurements - 933.1.2 Crystal Growth - 931.2 Physical Properties of Gases, Liquids and Solids - 821.4 Agricultural Products - 821.3 Agricultural Methods - 821.0 Woodlands and Forestry - 813.1 Coating Techniques - 802.3 Chemical Operations - 712.1 Semiconducting Materials - 531.2 Metallography - 483.1 Soils and Soil Mechanics - 454.2 Environmental Impact and Protection - 446.1 Water Supply Systems
DOI:10.3969/j.issn.1002-6819.2010.01.010
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 24>
Accession number:20101512841176
Title:Implementing scheme for establishment of modern agricultural engineering system
Authors:Zhu, Ming (1); Guo, Hongyu (1); Zhou, Xinqun (1)
Author affiliation:(1) Chinese Academy of Agricultural Engineering, Beijing 100125, China
Corresponding author:Zhu, M.
      (mingzhu@agri.gov.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:1-5
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Aiming at accelerating the establishment of modern agricultural engineering system, and improving the comprehensive productivity and the infrastructure supporting capacity of national agriculture, featuring agriculture engineering technology innovation and integrated innovation, emphasizing on solving the agricultural problems such as weak infrastructure, backward equipment, poor processing methods, lagged marketing system, deteriorated producing environment and bad public service etc., modern agricultural engineering system carried on the systematic and integrated study in mainly six fields, including farmland infrastructure facility engineering, crop cultivating and animal raising facility engineering, agro-products' local processing and storage facility engineering, agro-products' circulation facility engineering, agro-environment protecting facility engineering and modern agricultural public service facility engineering. The basal output such as technical routine, technical scheme, establishing model and constructing standards were formulated for national agricultural infrastructure facility engineering development. The study provides the technical support for modern agricultural engineering, and the basement and guarantee for the higher productivity, better quality, higher efficiency and sustainable development of agro-producing.
Number of references:20
Main heading:Facilities
Controlled terms:Agricultural engineering - Agriculture - Innovation - Marketing - Processing - Productivity - Standardization - Strategic planning - Sustainable development
Uncontrolled terms:Agriculture engineering - Agro-products - Facility engineering - Higher efficiency - Implementing scheme - Local processing - Processing method - Public services - Storage facilities - Technical scheme  - Technical support - Technology innovation
Classification code:913.1 Production Engineering - 912.2 Management - 912 Industrial Engineering and Management - 911.4 Marketing - 913.4 Manufacturing - 911.2 Industrial Economics - 901.4 Impact of Technology on Society - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 402 Buildings and Towers - 902.2 Codes and Standards
DOI:10.3969/j.issn.1002-6819.2010.01.001
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 25>
Accession number:20101512841232
Title:Optimization design of panels made by crop straw based on genetic neural network
Authors:Sun, Jianping (1); Wang, Fenghu (1); Hu, Yingcheng (1); Zhu, Xiaodong (1)
Author affiliation:(1) Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
Corresponding author:Wang, F.
      (fenghuwa53@sina.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:319-323
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:With the treatment of alkalescency, the crops rice straw particleboards were produced by the way of hot pressure. Effects of different addition amounts of isocyanate (MDI), urea formaldehyde resin (UF) and the fire retardant of FRW (fire retardant of wood) on the mechanical properties and flame-retardant performance were explored. In this study, the orthogonal experimental design and neural network were employed to construct the mapping model between the performances and the techniques. The genetic algorithm was adopted to optimize the weight and threshold of the model. The optimum design of the technique parameters were determined by the trained model and the given performances of the materials. With the proof generalization test, the optimized technological parameters of MDI, UF and FRW were 1.926%, 2.40% and 15.381%. The properties of rice straw particleboards hot-pressed by the optimized techniques were analyzed. Compared with errors of the non-optimization model, the error of modulus and rupture (MOR), Internal bond strength (IB) and heat release rate (HRR) was 11.7%, 20% and 8%, respectively. And after optimization by GA, the errors of performances were decreased 35.3%, 17.5% and 39%, respectively.
Number of references:16
Main heading:Neural networks
Controlled terms:Crops - Design - Errors - Genetic algorithms - Mechanical properties - Optimization - Particle board - Resins - Urea - Urea formaldehyde resins
Uncontrolled terms:Fire retardant - Genetic neural network - Heat release rates - Hot pressure - Internal bonds - Mapping model - Optimization design - Optimization models - Optimum designs - Orthogonal experimental design  - Rice straws - Technological parameters
Classification code:821.4 Agricultural Products - 902.1 Engineering Graphics - 921 Mathematics - 817.1 Polymer Products - 921.5 Optimization Techniques - 931.1 Mechanics - 951 Materials Science - 922.2 Mathematical Statistics - 815.1.1 Organic Polymers - 415.4 Other Structural Materials - 461.1 Biomedical Engineering - 723 Computer Software, Data Handling and Applications - 408 Structural Design - 723.4 Artificial Intelligence - 804.1 Organic Compounds - 811.2 Wood and Wood Products - 731 Automatic Control Principles and Applications
DOI:10.3969/j.issn.1002-6819.2010.01.057
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 26>
Accession number:20101512841219
Title:Model for calculating corn nitrogen nutrition index using hyper-spectral data
Authors:Liang, Huiping (1); Liu, Xiangnan (1)
Author affiliation:(1) School of Information Engineering, China University of Geosciences, Beijing 100083, China
Corresponding author:Liu, X.
      (liuxn@cugb.edu.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:250-255
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A method to fastly, accurately and dynamicly diagnose nitrogen nutrition status in large acreage is essential for corn growth vigor evaluation, production prediction and agriculture management. Two study sites respectively located in Changping district of Beijing and Changchun city were investigated and multiple spectral parameters were derived from the hyper-spectral data of the corn canopy of the two study areas. Further, based on stepwise regression analysis, quantitative relation between the corn nitrogen nutrition index (NNI) and hyper-spectral parameters was established, and the hyper-spectral parameters which had distinct correlation with the corn NNI as well as the predictive equations were presented. The results showed that three hyper-spectral parameters, i.e. NIR/G, NIR/NIR and REIP, were highly correlated with the corn NNI. Path coefficients of NIR/G and NIR/NIR to the corn NNI were calculated to be -0.14942 and -0.35218 respectively, which indicated an indirect effect of the two hyper-spectral parameters on the corn NNI. The path coefficient of REIP to the corn NNI was 1.41549, which revealed that REIP was highly sensitive to the corn NNI. The correlation index of the multi-variant regression model for the distinct hyper-spectral parameters and the corn NNI was 0.95507, fitting error between predicted and measured valuse was less than 0.1, Root mean square error was 0.06016, F value was 167.727 and P value was 0.0045.
Number of references:18
Main heading:Critical path analysis
Controlled terms:Interferometry - Nitrogen - Nutrition - Regression analysis - Spectrum analysis - Spectrum analyzers
Uncontrolled terms:Dilution models - Nitrogen concentrations - Nitrogen nutrition - Path analysis - Stepwise regression
Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.4 Optical Variables Measurements - 941 Acoustical and Optical Measuring Instruments - 922.2 Mathematical Statistics - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 921 Mathematics - 822.3 Food Products - 804 Chemical Products Generally - 723.2 Data Processing and Image Processing - 461.7 Health Care - 912.2 Management
DOI:10.3969/j.issn.1002-6819.2010.01.044
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 27>
Accession number:20101512841191
Title:Spatial variability of fractal dimension for soil particle size distribution and particle volume percentage in farmlands
Authors:Li, Yi (1); Li, Min (1); Cao, Wei (2); Zhang, Jianghui (2)
Author affiliation:(1) Key Laboratory of Agricultural Soil and Water Engineering in Arid Zone, Ministry of Education, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) Xinjiang Hydraulic and Hydropower Academy, Urumqi 830049, 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:1
Issue date:January 2010
Publication year:2010
Pages:94-102
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 spatial variability of soil physico-chemical properties for saline soil was during drip irrigation under plastic mulch and it influenced irrigation management. In this paper, based on soil sampling and the measured results of soil particle size distributions (PSD) at three scales, the quantitative relationships between soil PSD fractal dimension and particle volume percentage were discussed. Their classic statistical and geo-statistical characteristics were analyzed at each scale and all scales. Fractal dimensions of particle volume percentages at different scales were determined according to the semi-variogram models of soil PSD, and the contour maps were drawn. The results showed that: there were positive correlations between soil PSD fractal dimensions and clay volume percentages. Because specific surface area of small particles was larger than that of big particles, the soil PSD fractal dimension increased when the clay volume percentage increased. There was no strong variability for both soil PSD fractal dimensions and particle volume percentages at each scale. In the semi-variogram models of soil PSD fractal dimensions at three scales, both the nuggets and the sills were very low. The concentration degree and trends in contour maps of soil PSD fractal dimensions and clay volume percentage at 50 m scale were similar, but for contour maps of sand volume percentages and silt volume percentages, the concentration degree and variation trends were opposite. This study showed that there were certain scale dependence of soil PSD fractal dimension and particle volume percentages.
Number of references:23
Main heading:Fractal dimension
Controlled terms:Chemical properties - Geologic models - Initiators (chemical) - Irrigation - Partial discharges - Size determination - Size distribution - Soil surveys - Soils
Uncontrolled terms:Big particles - Concentration degree - Contour map - Different scale - Drip irrigation - Irrigation management - M-scale - Measured results - Particle volume - Particle volume percentage  - Physicochemical property - Plastic mulch - Positive correlations - Saline soil - Scale dependence - Semivariograms - Small particles - Soil particle size - Soil sampling - Spatial variability  - Statistical characteristics - Volume percentage
Classification code:943.3 Special Purpose Instruments - 803 Chemical Agents and Basic Industrial Chemicals - 821.3 Agricultural Methods - 921 Mathematics - 922.2 Mathematical Statistics - 931.2 Physical Properties of Gases, Liquids and Solids - 933.1 Crystalline Solids - 801 Chemistry - 531.2 Metallography - 483.1 Soils and Soil Mechanics - 481.1 Geology - 423 Non Mechanical Properties and Tests of Building Materials - 406.2 Roads and Streets - 701.1 Electricity: Basic Concepts and Phenomena
DOI:10.3969/j.issn.1002-6819.2010.01.016
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 28>
Accession number:20101512841240
Title:Effects of low temperature storage on blackheart incidence and quality maintenance of pineapple fruits
Authors:Gong, Deqiang (1); Xie, Jianghui (2); Zhang, Lubin (1); Gu, Hui (2); Sun, Guangming (2); Zhu, Shijiang (1)
Author affiliation:(1) College of Horticulture, South China Agricultural University, Guangzhou 510642, China; (2) South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524091, China
Corresponding author:Zhu, S.
      (shijiangzhu@yahoo.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:365-369
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 controlling blackheart incidence and maintain quality of fresh pineapple, the effects of low temperature storage on blackheart incidence and major quality indices as well as the related mechanism were investigated with the main producing cultivar "Comte de Paris". Pineapple fruits were stored at (8&plusmn;1)&deg;C and (12&plusmn;1)&deg;C, respectively, with fruits stored at ambient temperature (26-30&deg;C) as control. During 23 days in storage, compared with the control, both the two low temperature treatments reduced the blackheart severity, lowered the fruit mass loss, elevated contents of Vitamin C and titratable acids, and delayed the decrease of total soluble solids (TSS) content, with the storage at (8&plusmn;1)&deg;C resulting in better effects. Moreover, the low temperature storage reduced the production rate of superoxide anion radical (O<inf>2&dot;</inf>^-), inhibited the elevation of activities of lipoxygenase (LOX) and the accumulation of malondialdehyde (MDA). These results indicated that the effects of low temperature in reducing pineapple blackheart severity and maintaining quality involve the reduced membrane-lipid peroxidation and slowed senescing process.
Number of references:22
Main heading:Quality control
Controlled terms:Aldehydes - Customer satisfaction - Low temperature production - Oxidation - Oxidative stress - Oxygen - Total quality management
Uncontrolled terms:Ambient temperatures - Blackheart - Lipid peroxidation - Lipoxygenases - Low temperature treatment - Low temperatures - Low-temperature storage - Malondialdehyde - Mass loss - Pineapple fruit  - Production rates - Quality indices - Superoxide anion radicals - Titratable acid - Total soluble solids - Vitamin C
Classification code:922.2 Mathematical Statistics - 913.3 Quality Assurance and Control - 912.2 Management - 912 Industrial Engineering and Management - 804.1 Organic Compounds - 804 Chemical Products Generally - 802.2 Chemical Reactions - 644.4 Cryogenics - 461.9 Biology
DOI:10.3969/j.issn.1002-6819.2010.01.065
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 29>
Accession number:20101512841202
Title:Configuration design and kinematic analysis of serial-parallel manipulator with six degrees of freedom
Authors:Cui, Guohua (1); Zhang, Yanwei (1); Zhang, Yingshuang (2); Wu, Haimiao (1)
Author affiliation:(1) College of Mechanical Engineering, Hebei Engineering University, Handan 056038, China; (2) College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
Corresponding author:Cui, G.
      (ghcui2007@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:1
Issue date:January 2010
Publication year:2010
Pages:155-159
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A six degrees of freedom serial-parallel manipulator with a three-rotation parallel mechanism and a three degrees of freedom serial mechanism (two-prismatic plus one-revolute) was synthesized and investigated according to the theories of the structure synthesis of robot mechanisms. It is able to perform spatial transformational movement, rotation, hoisting, tilting, planar rotation and tilted rotation. Based on configuration analysis, kinematic position equations were formulated, kinematic model of parallel fine-tuning structure was discussed as a key and inverse position analysis and velocity mapping equations were presented. Kinematic simulation of the mechanism was conducted using MATLAB software. A case study was provided, which applied the mechanism in tunnel erector assembling manipulators. The proposed mechanism possesses large work-space volume, high rotational flexibility, sound stability and balance, high precision and robust load capacity, and can be applied in robot system of planting and picking, as well as of forest cutting and transport.
Number of references:13
Main heading:Kinematics
Controlled terms:Agriculture - Computer software - Degrees of freedom (mechanics) - Design - Electric arc welding - Manipulators - MATLAB - Mechanisms - Rotation - Synthesis (chemical)
Uncontrolled terms:Configuration analysis - Configuration designs - Degrees of freedom - High precision - Kinematic Analysis - Kinematic model - Kinematic simulations - Load capacity - Matlab- software - Parallel mechanisms  - Planar rotation - Position analysis - Position equations - Robot mechanism - Robot system - Rotational flexibility - Serial mechanism - Serial-parallel manipulator - Six degrees of freedom - Space volume  - Structure synthesis - Three degrees of freedom - Tuning structure - Velocity mapping
Classification code:723.5 Computer Applications - 731.5 Robotics - 802.2 Chemical Reactions - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 902.1 Engineering Graphics - 921 Mathematics - 931.1 Mechanics - 723.1.1 Computer Programming Languages - 408 Structural Design - 538.2.1 Welding Processes - 601.1 Mechanical Devices - 601.3 Mechanisms - 691.1 Materials Handling Equipment - 704.2 Electric Equipment - 723 Computer Software, Data Handling and Applications
DOI:10.3969/j.issn.1002-6819.2010.01.027
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 30>
Accession number:20101512841201
Title:Effect of temperature on compressibility of rubbed korshinsk peashrub
Authors:Zhang, Xu (1); Wang, Chunguang (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
Corresponding author:Wang, C.
      (wcgjdy@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:1
Issue date:January 2010
Publication year:2010
Pages:150-154
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:Compressibility of rubbed korshinsk peashrub has great effect on designing compressing equipments and making choice of processing technologies of rubbed korshinsk peashrub. Based on the compressibility experiment of rubbed korshinsk peashrub at different temperatures ranging from 22&deg;C to 140&deg;C, the mathematical models were established which could explain the relationships between the pressure and volumetric strain, the pressure and compressed density as well as the bulk modulus and compressed density, and the effect of temperature on the compressibility of rubbed korshinsk peashrub was obtained. The results showed that the rubbed korshinsk peashrub experienced three stages of being loose, transitional and tight during the process of compression. At the first stage, its compressibility was better, but the compressibility began to decrease gradually at the transitional stage and decreased sharply at the stage of being tight. Meanwhile, the study also showed that the temperature had an impact on compressibility of rubbed korshinsk peashrub. Its compressibility increased with increasing temperature in the above-mentioned range, and the effect of temperature on compressibility became more obvious as the compressed density increased. The results provide references for designing compressing equipments and making reasonable choice of processing technologies of korshinsk peashrub.
Number of references:16
Main heading:Mathematical models
Controlled terms:Compressibility - Elastic moduli - Pressure effects - Temperature
Uncontrolled terms:Bulk modulus - Effect of temperature - Korshinsk peashrub - Processing technologies - Three stages - Volumetric strain
Classification code:421 Strength of Building Materials; Mechanical Properties - 422.2 Test Methods - 641.1 Thermodynamics - 921 Mathematics - 931.1 Mechanics - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2010.01.026
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 31>
Accession number:20101512841214
Title:Model for food safety warning based on inspection data and BP neural network
Authors:Zhang, Debin (1); Xu, Jiapeng (1); Xu, Jianjun (2); Li, Chongguang (1)
Author affiliation:(1) College of Economics and Management, College of Land Management, Huazhong Agricultural University, Wuhan 430070, China; (2) Food and Agriculture Standardization Institute, China National Institute of Standardization, Beijing 100086, China
Corresponding author:Zhang, D.
      (zhangdb@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:1
Issue date:January 2010
Publication year:2010
Pages:221-226
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:Based on BP neural network theory, the food safety research was carried out with the daily food inspection data from Chinese General Administration of Quality Supervision, Inspection and Quarantine. Firstly, the inspection data was simplified to 167 supervised items which had the most direct relation with food safety forecast. Then the BP neural network model was established with input layer of the previous 167 items, five groups as output layer, and two hidden layers as passing function. Last, the model was trained and validated by the simplified dataset. The research showed that the model could effectively remember and identify characteristics of food inspection datasets and then make effective forecast for new dataset. This will be beneficial for research methodologies and techniques in Chinese food safety warning practice.
Number of references:18
Main heading:Neural networks
Controlled terms:Backpropagation - Health - Inspection - MATLAB - Research
Uncontrolled terms:BP neural network model - BP neural networks - Data sets - Food inspection - Food safety - Hidden layers - Input layers - Output layer - Quality supervision - Research methodologies
Classification code:921 Mathematics - 914.3 Industrial Hygiene - 913.3.1 Inspection - 901.3 Engineering Research - 723.5 Computer Applications - 723.4 Artificial Intelligence - 723.1.1 Computer Programming Languages - 461.6 Medicine and Pharmacology - 461.1 Biomedical Engineering
DOI:10.3969/j.issn.1002-6819.2010.01.039
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 32>
Accession number:20101512841209
Title:Continuum removal method for cotton verticillium wilt severity monitoring with hyperspectral data
Authors:Jing, Xia (1); Wang, Jihua (2); Song, Xiaoyu (2); Xu, Xingang (2); Chen, Bing (3); Huang, Wenjiang (2)
Author affiliation:(1) College of Geometrics, Xi'an University of Science and Technology, Xi'an 710054, China; (2) National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China; (3) Key Laboratory of Oasis Ecology Agriculture of Xinjiang Production and Construction Group, College of Agriculture, Shihezi University, Shihezi 832003, China
Corresponding author:Wang, J.
      (wangjh@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:1
Issue date:January 2010
Publication year:2010
Pages:193-198
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 objective of this study was to estimate verticllium wilt severity levels of cotton leaf using ground hyperspectral data. According to the analysis of spectrum features of cotton leaf at different severity levels, the bands sensitive to verticllium wilt severity level were selected and the spectrum reflect was processed and the inversion model of severity level based on absorption parameters of spectrum features was established using a method of continuum removal. Results showed that the band ranging from 650 nm to 700 nm was the most sensitive region for distinguishing cotton leaf verticllium wilt severity. With increasing of cotton verticillium wilt severity levels, the red depth and absorption area decreased, and absorption position of the red spectrum moved to the long wavelength band. Especially, the severity level correlated very significantly with the band depth and absorption area of red spectrum. Consequently, the linear inversion model based on the right half area of the red absorption peak had the maximum determination coefficient and minimum root mean square error, which was taken in the model as the independent variable. The model was considered as the optimum one to estimate the severity levels of cotton verticillium wilt. Study confirmed that using hyperspectral remote sensing data to explore cotton disease information was an important and effective application, and it provides a good theoretical basis for further studying monitoring mechanism of cotton verticillium wilt.
Number of references:18
Main heading:Absorption spectroscopy
Controlled terms:Absorption - Cotton - Interferometry - Parameter extraction - Remote sensing - Spectrum analysis - Spectrum analyzers
Uncontrolled terms:Absorption areas - Absorption peaks - Continuum - Continuum removal - Determination coefficients - Hyperspectral Data - Hyperspectral remote sensing data - Independent variables - Inversion models - Linear inversion  - Long wavelength bands - Root mean square errors - Spectrum features - Theoretical basis - Verticillium wilt
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 922 Statistical Methods - 922.2 Mathematical Statistics - 931.2 Physical Properties of Gases, Liquids and Solids - 941 Acoustical and Optical Measuring Instruments - 941.3 Optical Instruments - 941.4 Optical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 921 Mathematics - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 731.1 Control Systems - 821.4 Agricultural Products - 741 Light, Optics and Optical Devices - 802.3 Chemical Operations - 819.1 Natural Fibers - 801 Chemistry
DOI:10.3969/j.issn.1002-6819.2010.01.034
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 33>
Accession number:20101512841197
Title:Fast and accurate obtaining modal model for designing agricultural machinery
Authors:Zhong, Jiang (1); Qiao, Xin (1); Wang, Yangyu (1); Zhao, Zhangfeng (1); Zhang, Xian (1)
Author affiliation:(1) Key Laboratory of Mechanical Manufacture and Automation, Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China
Corresponding author:Zhang, X.
      (xianzh168@126.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:129-134
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 certain small agricultural machine as an example for obtaining modal parameters of the whole machine during the design process of agricultural machinery. Firstly, the structural modal model for designing was studied by using NASTRAN. And then, the modal model of some complex outsourcing and general parts were studied by experimental analysis using LMS Test.Lab. Finally, the modal model of the whole machine had been obtained within LMS Virtual.Lab using free interface modal synthesis method which integrated the acquired modes of the structures. The experimental results of presented method showed that the maximum errors of the main natural frequencies were less than 5.5%, and the mode shapes were also satisfied with the experimental results. Generally, the proposed method can be applied in the fast and accurate design of small agricultural machinery for acquiring the structural modal parameters. Moreover, it also provides data support for the study of dynamic behaviors of product structure and optimizes the configuration of the design process. The proposed method clearly shows its important engineering role in agricultural machine design.
Number of references:17
Main heading:Modal analysis
Controlled terms:Agricultural machinery - Finite element method - Machine design - Structural design
Uncontrolled terms:Accurate design - Agricultural machine - Data support - Design process - Dynamic behaviors - Experimental analysis - Fast design - Free interface - Maximum error - Modal models  - Modal parameters - Modal synthesis - Modal synthesis method - Mode shapes - NASTRAN - Product structure - Whole machine
Classification code:408.1 Structural Design, General - 601 Mechanical Design - 821.1 Agricultural Machinery and Equipment - 921 Mathematics - 921.6 Numerical Methods
DOI:10.3969/j.issn.1002-6819.2010.01.022
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 34>
Accession number:20101512841243
Title:Extraction of broad bean protein and effects of NaCl concentration and pH value on its solubility and emulsibility
Authors:Wang, Yanping (1); Li, Shuangxi (1); Ahmed, Zaheer (1); Song, Qingming (1)
Author affiliation:(1) Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
Corresponding author:Wang, Y.
      (ypwang40@yahoo.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 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:Broad bean protein, with the eight essential amino acids and high levels of trace elements, is valuable for development. This work was aimed to investigate the suitability of water extraction and a method i.e ultrasonic method for extraction of broad bean protein and to study its functional properties. Broad bean protein was prepared from broad bean and the extraction rate, precipitation and functional properties of broad bean protein were investigated under the influence of variable ranges of pH value and NaCl concentration. The maximum yield of extractable protein, both by ultrasonic and water extraction methods could be achieved at the range of pH value 8-12. The isoelectric point of broad bean protein was found to be at pH 4.0-4.2. Solubility and emulsification of the protein increased, as the pH value increased from 4 to 12, with the least solubility and emulsification of protein at pH 4 and the maximum at pH 12. The solubility and emulsification of broad bean protein increased in NaCl as concentration increased from 0 to 1.0 mol/L, while further increase of NaCl concentration caused solubility and emulsification of the protein to decline both at pH 4 and pH 7. So the ultrasonic assisted extraction resulted in higher solubility and emulsification of protein than those by water extraction at the same pH value and NaCl concentration. This result with the protein extraction process and the influence of some extracting factors lay the foundation for the development and utilization of broad bean protein.
Number of references:15
Main heading:pH effects
Controlled terms:Amino acids - Concentration (process) - Emulsification - Organic acids - Proteins - Sodium chloride - Solubility - Solvent extraction - Trace elements - Ultrasonics
Uncontrolled terms:Broad bean (Vicia faba L.) - Essential amino acids - Extraction rate - Functional properties - Iso-electric points - NaCl concentration - pH value - Protein extraction - Protein solubility - Ultrasonic methods  - Variable range - Vicia faba - Water extraction - Water extraction methods
Classification code:804.2 Inorganic Compounds - 804.1 Organic Compounds - 804 Chemical Products Generally - 802.3 Chemical Operations - 801.4 Physical Chemistry - 801.1 Chemistry, General - 801 Chemistry - 753.1 Ultrasonic Waves - 482.2 Minerals - 481.2 Geochemistry - 461 Bioengineering and Biology
DOI:10.3969/j.issn.1002-6819.2010.01.068
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 35>
Accession number:20101512841205
Title:Simulation model and experiment research of small wind turbine based on DC motor
Authors:Du, Haijiang (1); Feng, Xianzheng (1); Yang, Minghao (1)
Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Yang, M.
      (niuniudhj@sina.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:171-176
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 wind power generation research in lab, it's valuable to build wind turbine simulation system. Based on energy conversion principle of small wind turbine, the mathematic model of the operation characteristics of wind turbine and its power &amp; torque characteristics are analyzed. The feasibility of simulation of wind turbine based on DC motor is discussed. Based on mathematical model, torque control and speed control methods of simulation of wind turbine based on DC motor are analyzed in detail. Then simulation model and experimental system are built to test and verify theoretical analysis. The results indicate that the speed control method adopting double closed-loop regulation has good precision, quick dynamic response and widen operation range, which can be used in the research of wind power generation technology in laboratory.
Number of references:20
Main heading:Wind power
Controlled terms:Computational methods - Computer simulation - DC motors - Dynamic response - Electric power generation - Energy conversion - Mathematical models - Research - Speed - Speed control  - Speed regulators - Torque - Torque control - Wind turbines
Uncontrolled terms:Closed-loop - Experiment research - Experimental system - Mathematic model - Operation characteristic - Operation range - Simulation model - Small wind turbine - Torque characteristic - Wind turbine simulation
Classification code:723.5 Computer Applications - 731.3 Specific Variables Control - 732.1 Control Equipment - 901.3 Engineering Research - 921 Mathematics - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 408.1 Structural Design, General - 421 Strength of Building Materials; Mechanical Properties - 525.5 Energy Conversion Issues - 615 Thermoelectric, Magnetohydrodynamic and Other Power Generators - 615.8 Wind Power (Before , use code ) - 705.2 Electric Generators - 705.3.2 DC Motors
DOI:10.3969/j.issn.1002-6819.2010.01.030
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 36>
Accession number:20101512841242
Title:Effect of hot air treatment on postharvest quality of Zhonghuashou peach
Authors:Lu, Zhenzhong (1); Xu, Li (2); Wang, Qingguo (1)
Author affiliation:(1) College of Food Science and Engineering, Shandong Agricultural University, Tai'an 271018, China; (2) Shandong Province Fruits and Vegetable Security Engineering Technology Research Center, Jinan 252400, China
Corresponding author:Wang, Q.
      (wqgyyy@126.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 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:In order to retard the quality decrease of peach during storage, the effects of hot air treatment on postharvest quality changes of zhonghuashou peach were studied. The results showed that proper hot air treatment could inhibit flesh browning and woolliness, had good effects on keeping firmness, titratable acid and taste. The hot air treatment retarded the increase of polyphenol oxidase (PPO) activity, decreased the peak value, but had no obvious effects on keeping flavor. The best hot air treatment for zhonghuashou peach was: 48&deg;C, 4 h.
Number of references:17
Main heading:Quality control
Controlled terms:Agricultural products - Customer satisfaction - Total quality management
Uncontrolled terms:Hot air - Hot air treatment - Peak values - Polyphenol oxidase - Postharvest quality - Titratable acid
Classification code:821.4 Agricultural Products - 912 Industrial Engineering and Management - 912.2 Management - 913.3 Quality Assurance and Control - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2010.01.067
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 37>
Accession number:20101512841206
Title:Heat transfer in diesel engine cooling system using coupled method
Authors:Xin, Zhe (1); Zhang, Kepeng (1); Xie, Bin (1); Mao, Enrong (1)
Author affiliation:(1) College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Xin, Z.
      (xinzhecau@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:177-181
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 the research on flow and heat transfer of the diesel engine cooling system, the boundary condition is often difficult to be determined. The paper made a whole heat transfer modeling calculation for solid-fluid coupled system which contained the piston-liner-coolant-cylinder body in a six-cylinder diesel engine, which could omit the definition of the boundary condition when they were calculated separately. Comparison the temperature between calculated results and measured values at some spots along with the axis direction on cylinder face was made, and the influence of simulation precision with different grids density was studied. Considering the computer resources and calculation precision, temperature field, flow field and pressure field of cooling system were obtained through simulating, which could provide guidance for engine design.
Number of references:14
Main heading:Cooling systems
Controlled terms:Boundary conditions - Computational methods - Computer resource management - Computer simulation - Cooling - Cylinders (shapes) - Diesel engines - Engine cylinders - Heat engines - Heat exchangers  - Machine design - Thermoelectric equipment
Uncontrolled terms:Calculation precision - Computer resources - Coupled method - Engine design - Fluid-coupled system - Grids density - Heat transfer modeling - On flow - Pressure field - Solid-fluid coupling  - Temperature field
Classification code:921 Mathematics - 641.2 Heat Transfer - 704.2 Electric Equipment - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 802.3 Chemical Operations - 616.1 Heat Exchange Equipment and Components - 612.2 Diesel Engines - 612.1.1 Internal Combustion Engine Components - 612.1 Internal Combustion Engines, General - 601 Mechanical Design - 408.2 Structural Members and Shapes - 615.4 Thermoelectric Energy
DOI:10.3969/j.issn.1002-6819.2010.01.031
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 38>
Accession number:20101512841193
Title:Effect of straw mulching on sediment yielding process of soil with different initial water contents
Authors:Liu, Liusong (1); Ren, Hongyan (1); Shi, Xuezheng (1); Yu, Dongsheng (1); Wang, Hongjie (1); Sun, Weixia (1); Zhang, Liming (1)
Author affiliation:(1) State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Acad. of Sci., Nanjing 210008, China; (2) Graduate School of Chinese Acad. of Sci., Beijing 100039, China; (3) College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author:Ren, H.
      (renhy@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:1
Issue date:January 2010
Publication year:2010
Pages:108-112
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:Mulch with a layer of plant residue is an effective method for water and soil conservation. A laboratory experiment was conducted to evaluate the effect of antecedent soil moisture and straw mulching on sediment yielding process using rainfall simulator. The rainfall simulator was used to create rainfall intensity of 60 mm/h for 1 h. The study site was located at the ecological experimental research station of red soil, Chinese Academy of Sciences, in Yujiang County, Jiangxi Province of China. The soil used in this study was cultivated cambisol derived from red sandstone. The erosion plot was 12 m in length and 3 m in width with a slope of 9%. Antecedent soil moisture levels (dry, wet) and coverage degrees of straw mulching (0, 15%, 30%, 60% and 90%) were considered as two independent variables in this factorial design experiment. For the dry soils with the coverage degrees of 0, 15%, 30%, 60% and 90%, the average sediment yield rates within one hour was 24.5, 15.8, 10.4, 11.2, and 1.0 g/(m²&middoth), respectively. The sediment yield rates of the dry soils tended to increase slightly in the rainfall duration for a given percent ground cover. For the wet soils with the coverage degrees of 0, 15%, 30%, 60% and 90%, the average sediment yield rates with one hour were 115.6, 70.0, 49.6, 34.8, 31.9 g/(m²&middoth), respectively. Sediment yield rate of the wet soil decreased quickly during the simulated rainfall for a given percent ground cover. The average sediment yield rates in stable condition were 52.5, 30.5, 22.8, 19.8 and 15.4 g/(m²&middoth) with the coverage degrees of 0, 15%, 30%, 60% and 90%, respectively. The results indicate that coverage degree significantly affect sediment yield rate. Also, the coverage degree of 30% will effectively control runoff and soil loss.
Number of references:18
Main heading:Soil conservation
Controlled terms:Experiments - Moisture determination - Rain - Sedimentology - Soil moisture
Uncontrolled terms:Antecedent soil moisture - Chinese Academy of Sciences - Coverage degree - Dry soil - Erosion plots - Experimental research - Factorial design - Independent variables - Jiangxi Province - Laboratory experiments  - Plant residues - Rainfall duration - Rainfall intensity - Rainfall simulators - Red sandstone - Red soils - Sediment yield rate - Sediment yields - Simulated rainfall - Soil loss  - Straw mulching - Study sites - Wet soil - Yielding process
Classification code:443.3 Precipitation - 481.1 Geology - 483.1 Soils and Soil Mechanics - 821.3 Agricultural Methods - 901.3 Engineering Research - 944.2 Moisture Measurements
DOI:10.3969/j.issn.1002-6819.2010.01.018
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 39>
Accession number:20101512841221
Title:Measurement of cotton leaf thickness with hyper spectrum
Authors:Sui, Xueyan (1); Li, Shaokun (2); Zhang, Xiaodong (1); Zhu, Zhenlin (1); Bai, Junhua (2); Wang, Fangyong (3); Ming, Bo (3); Bai, Caiyun (3)
Author affiliation:(1) Shandong Academy of Agriculture Sciences, Jinan 250100, China; (2) Key Laboratory of Crop Physiology and Production, Ministry of Agriculture, Beijing 100081, China; (3) Key Laboratory of Oasis Ecology Agriculture of Xinjiang Construction Crops, Shihezi 832003, China
Corresponding author:Li, S.
      (Lishk@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:1
Issue date:January 2010
Publication year:2010
Pages:262-266
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:Changes of leaf thickness can indicate the variations of plant growth state, in order to carry out real-time, live, non-destructive testing of leaf thickness, the study took cotton leaves as the research object. The correlation between plant leaf spectrum and thickness was studied on 84 couples of data of cotton, with DPS and Origin statistical softwares. Studies showed that the correlation between reflectance and leaf thickness showed significantly positive relationship in two visible light regions of 350-369 nm and 664-689 nm, and significantly negative relationship in two infrared regions of 917-1884 nm and 2 048-2 380 nm. In general, the correlation degree between reflectance and leaf thickness in infrared light was higher than that in visible light. Red edge indices showed low correlation with leaf thickness, however 24 figure indices had significant correlation with leaf thickness, and the area of absorbtion with the center of 980 nm had the highest correlation degree with correlation coefficient 0.848. Three models about leaf thickness were set and tested with reflectance, plant index and spectral figure index. Among these models, the highest relative error was 7.4%, and the RMSE was 0.051 mm. It is feasible to measure alive leaf thickness untouchably with hyper spectrum.
Number of references:29
Main heading:Spectrum analysis
Controlled terms:Communication channels (information theory) - Correlation methods - Cotton - Interferometry - Light - Nondestructive examination - Parameter extraction - Plant life extension - Reflection - Spectrum analyzers
Uncontrolled terms:Correlation coefficient - Correlation degree - Hyper spectra - Infrared light - Infrared regions - Leaf thickness - Low correlation - Non destructive testing - Plant growth - Plant leaf  - Red edge - Relative errors - Research object - Statistical software - Three models - Visible light - Visible light region
Classification code:821.4 Agricultural Products - 912.1 Industrial Engineering - 921 Mathematics - 922 Statistical Methods - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 922.2 Mathematical Statistics - 941.4 Optical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 819.1 Natural Fibers - 741.1 Light/Optics - 402.1 Industrial and Agricultural Buildings - 421 Strength of Building Materials; Mechanical Properties - 422.2 Test Methods - 423.2 Test Methods - 711 Electromagnetic Waves - 716.1 Information Theory and Signal Processing - 723.2 Data Processing and Image Processing - 723.5 Computer Applications
DOI:10.3969/j.issn.1002-6819.2010.01.046
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 40>
Accession number:20101512841227
Title:Experimental investigation on microwave assisted pyrolysis of algae for rapid bio-oil production
Authors:Wan, Yiqin (1); Wang, Yingkuan (2); Lin, Xiangyang (2); Liu, Yuhuan (1); Chen, Paul (2); Li, Yecong (2); Ruan, Roger (1)
Author affiliation:(1) Engineering Research Center for Biomass Conversion, Ministry of Education, School of Life Science and Food Engineering, Nanchang University, Nanchang 330047, China; (2) Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN 55108, United States; (3) Chinese Academy of Agricultural Engineering, Beijing 100125, China; (4) College of Biological Science and Technology, Fuzhou University, Fuzhou 350108, China
Corresponding author:Ruan, R.
      (ruanx001@umn.edu)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:295-300
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 technologies for rapid and cost-efficient bio-oil production from algae, the authors' research group has developed a whole set of new process for algae variety selection, culture, harvest and dehydration. Based on the previous technical breakthrough by the research group in microwave assisted pyrolysis (MAP) of biomass, the optimized algae harvested from self-cultivated tank was dehydrated and used to conduct experiments on MAP of algae to produce bio-oil using self-developed equipment for microwave assisted pyrolysis of corn stover. Some algae-based bio-oil with water-oil two-phase stratification under natural conditions was obtained. The two-phase bio-oil products were then analyzed to acquire their compositions using Gas Chromatography-Mass Spectrometry (GC-MS); the compositions and their percentages were acquired, which can provide theoretical basis for refining algae-based bio-oil products for various usages and developing value-added by-products. The research results show that MAP of algae is a rapid, cost-competitive and efficient method for producing bio-oil, which provides reference for mass production of bio-oil from algae.
Number of references:33
Main heading:Petroleum refining
Controlled terms:Algae - Biodiesel - Biomass - Chromatographic analysis - Gas chromatography - Harvesting - Mass spectrometry - Microwaves - Pyrolysis - Research  - Thermogravimetric analysis
Uncontrolled terms:Bio oil - Bio-mass energy - Corn stover - Cost-efficient - Efficient method - Experimental investigations - Gas chromatography-mass spectrometry - Mass production - Microwave assisted - Microwave pyrolysis  - Natural conditions - New process - Research groups - Research results - Theoretical basis
Classification code:802.2 Chemical Reactions - 802.3 Chemical Operations - 805.1.1 Biochemical Engineering - 821.3 Agricultural Methods - 821.5 Agricultural Wastes - 901.3 Engineering Research - 943.3 Special Purpose Instruments - 801 Chemistry - 453.1 Water Pollution Sources - 461.2 Biological Materials and Tissue Engineering - 471.5 Sea as Source of Minerals and Food - 513.1 Petroleum Refining, General - 523 Liquid Fuels - 525.1 Energy Resources and Renewable Energy Issues - 711 Electromagnetic Waves
DOI:10.3969/j.issn.1002-6819.2010.01.052
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 41>
Accession number:20101512841211
Title:Extraction of leaf area index of wheat based on image processing technique
Authors:Li, Ming (1); Zhang, Changli (1); Fang, Junlong (1)
Author affiliation:(1) College of Engineering, Northeast Agriculture University, Harbin 150030, China
Corresponding author:Zhang, C.
      (zhangcl@neau.edu.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:205-209
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 better simulating the dynamics of leaf area index (LAI), an experiment under field conditions, with five varieties and five densities at different stages, was carried out. The digital images of wheat groups canopy were obtained,, and the actual leaf area was manually measured. An effective extraction method of wheat LAI under complex background was designed. Simulation models between data of image processing and actual leaf area were established. Results showed that the model parameters were significantly affected by the differences of variety, density and growing stages. Hypothetical tests of the models were carried out by random extracting sample images, and all of them were able to meet the requirements of test. Square of the correlation coefficient of all models is higher than 0.86. This can achieve the higher precision estimation of wheat canopy LAI.
Number of references:15
Main heading:Image processing
Controlled terms:Crops - Data processing - Extraction - Imaging systems
Uncontrolled terms:Complex background - Correlation coefficient - Digital image - Extraction method - Field conditions - Fitting model - Fitting models - Image processing technique - Leaf area - Leaf Area Index  - Model parameters - Precision estimation - Simulation model - Wheat canopy
Classification code:723.2 Data Processing and Image Processing - 741 Light, Optics and Optical Devices - 746 Imaging Techniques - 802.3 Chemical Operations - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2010.01.036
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 42>
Accession number:20101512841220
Title:Determination for total nitrogen content in black soil using hyperspectral data
Authors:Lu, Yanli (1); Bai, Youlu (1); Wang, Lei (1); Wang, He (1); Yang, Liping (1)
Author affiliation:(1) Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Corresponding author:Lu, Y.
      (luyl@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:1
Issue date:January 2010
Publication year:2010
Pages:256-261
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:It provides important information for soil digital management if soil total nitrogen can be rapidly and accurately estimated. In this research, NIR-Visible spectral reflectance of soil samples was measured using ASD2500 hyperspectral meter. The results indicated that Total Nitrogen (TN) content of black soil had better relationship with the first deviation of reflectance logarithm (LOGR-FD) than the original spectrum in 400-600 nm especially. The optimum model predicting TN of black soil using derivative spectra (LOGR-FD) was established by the method of stepwise regression. The selected bands in the model are 556, 1642 and 2491 nm respectively. Normal Difference Index (NDI[550, 450]) was constructed by spectral reflectance in the bands of 450 and 550 nm, and the model was also established for TN predicting using the NDI[550, 450]. By validity, the above two models produced better effects: the coefficients of determination (R²) are 0.863 and 0.829 and the Root Mean Square Errors (RMSE) are 0.122 and 0.152 respectively.
Number of references:18
Main heading:Geologic models
Controlled terms:Algebra - Finite difference method - Interferometry - Nitrogen - Reflection - Soil testing - Soils - Spectrum analysis - Spectrum analyzers
Uncontrolled terms:Black soil - Derivative spectra - HyperSpectral - Hyperspectral Data - Optimum model - Root mean square errors - Soil sample - Soil total nitrogen - Spectral reflectances - Stepwise regression  - Total nitrogen - Total nitrogen content
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 921.6 Numerical Methods - 922.2 Mathematical Statistics - 941 Acoustical and Optical Measuring Instruments - 941.4 Optical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 921.1 Algebra - 804 Chemical Products Generally - 741.1 Light/Optics - 711 Electromagnetic Waves - 483.1 Soils and Soil Mechanics - 481.1 Geology - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2010.01.045
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 43>
Accession number:20101512841236
Title:Analysis of land use/cover changes and their driving forces in Yellow River Delta, China during the last decade
Authors:Zhou, Wenzuo (1)
Author affiliation:(1) School of Geographical Sciences, Southwest University, Chongqing 400715, China
Corresponding author:Zhou, W.
      (zhouwz@swu.edu.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:341-345
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:Land use/cover changes (LUCC) are crucial for sustainability of land resource in coastal zones with unstable terrestrial ecological system. It is necessary to understand distribution of LUCC for planning, exploitation and management of land resource in those tender regions. LUCC and their driving forces were analyzed in Yellow River Delta in China by remote sensing and GIS during the last decade. It was showed that lots of land use/land cover changes had been taken place and exchanged between each others in the Yellow River Delta in the last decade. Although the dynamics of land use/land cover had been affected by natural factors and human economic activities, the human activities were the main driving forces for the LUCC in Yellow River Delta. Most unites of land use/land covers had been changed or degraded with bad natural conditions because of intense human activities, poor managements, adjusted regional industry constitution, and rapid urbanization. Although fast development had been carried out for those years, some human activities which were inharmonious for sustainable development of regional land resource had induced degradation of the intender land resource in Yellow River Delta.
Number of references:29
Main heading:Coastal zones
Controlled terms:Economics - Geographic information systems - Information systems - Land use - Landforms - Natural resources - Remote sensing - Rivers - Strategic planning - Sustainable development
Uncontrolled terms:Driving force - Driving forces - Ecological systems - Human activities - Human economics - Induced degradation - Land cover - Land resources - Land use/cover change - Land use/land cover  - Land use/land cover change - Natural conditions - Natural factors - Remote sensing and GIS - Yellow River delta
Classification code:512 Petroleum and Related Deposits - 723.3 Database Systems - 731.1 Control Systems - 901.4 Impact of Technology on Society - 903.2 Information Dissemination - 903.3 Information Retrieval and Use - 911.2 Industrial Economics - 912.2 Management - 971 Social Sciences - 501 Exploration and Prospecting - 403 Urban and Regional Planning and Development - 407.2 Waterways - 407.3 Coastal Engineering - 442.2 Land Reclamation - 444 Water Resources - 444.1 Surface Water - 471 Marine Science and Oceanography - 481.1 Geology - 481.3.1 Geothermal Phenomena
DOI:10.3969/j.issn.1002-6819.2010.01.061
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 44>
Accession number:20101512841189
Title:Multifractal study on spatial variability of soil water and salt and its scale effect
Authors:Liu, Jilong (1); Ma, Xiaoyi (1); Zhang, Zhenhua (2)
Author affiliation:(1) College of Hydrulic and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) Geography and Planning Department, Ludong University, Yantai 264025, China
Corresponding author:Ma, X.
      (xiaoyimasl@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:1
Issue date:January 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:In order to reveal spatial distribution characteristics of soil water and electrical conductivity in woodland in studied area and their scale effects, the paper studied spatial variability of soil water and electrical conductivity under different sampling time and area in woodland in Yangling with multifractal method. The results showed that spatial heterogeneity of soil water and electrical conductivity under three kinds of sampling area decreased with the increase of average water content and electrical conductivity. As sampling area increased, when average water content and electrical conductivity were high, spatial heterogeneity of soil water became large, and scale effect of soil electrical conductivity was not obvious; when average water content and electrical conductivity were low, their spatial distribution had obvious patch structure. Multifractal spectrums of soil water and electrical conductivity were different under sampling time and area, which indicated that their spatial heterogeneity were caused by different information. Multifractal analysis could reveal more local information of soil water and electrical conductivity in sampling woodland.
Number of references:19
Main heading:Soil surveys
Controlled terms:Electric conductivity - Electric network analysis - Fractals - Size distribution - Soil moisture - Underwater soils - Volume control (spatial) - Water content
Uncontrolled terms:Electrical conductivity - Multi fractals - Scale effects - Soil water - Spatial variability
Classification code:933.1 Crystalline Solids - 931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 921 Mathematics - 731.3 Specific Variables Control - 703.1.1 Electric Network Analysis - 701.1 Electricity: Basic Concepts and Phenomena - 531.2 Metallography - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 444 Water Resources - 423 Non Mechanical Properties and Tests of Building Materials - 406.2 Roads and Streets
DOI:10.3969/j.issn.1002-6819.2010.01.014
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 45>
Accession number:20101512841180
Title:Effect of initial water content on vertical line-source infiltration characteristics of soil
Authors:Zeng, Chen (1); Wang, Quanjiu (1); Fan, Jun (1)
Author affiliation:(1) State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest Agriculture and Forestry University, Chinese Acad. of Sci., Yangling 712100, China; (2) Institute of Water Resource, Xi'an University of Technology, Xi'an 710048, China
Corresponding author:Wang, Q.
      (wquanjiu@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:24-30
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:For solving the problem presented in the application of infiltration irrigation system in deep rooted plants, a vertical infiltration irrigation device was proposed. Experiments about vertical line-source infiltration characteristics of sand loess and lou soil with different initial soil water contents were carried out in laboratory with this device. The results showed that the three-dimensional infiltration processes for the two soils could be described well by revised Philip infiltration equation. For a given time, there was a negatively quadratic function relationship between accumulative infiltration and initial water content for sand loess and lou soil. The maximum horizontal distance, vertical distance, and horizontal-vertical ratio of the two soils had quadratic parabola relations with initial water content. Comparison of the two soils indicated that the accumulative infiltration of sand loess with more sand particles was greater than that of lou soil under lower initial water content. With the increasing of initial water content, reduction speed of the accumulative infiltration of sand loess was faster than that of lou soil. The critical initial water content of lou soil with more clay particles was higher than that of sand loess, but its infiltration range was lower than that of sand loess. The results could provide some guidelines for vertical line-source irrigation technology in different soils.
Number of references:28
Main heading:Water content
Controlled terms:Irrigation - Moisture determination - Sand - Seepage - Soil mechanics - Soil moisture - Underwater soils - Wetting
Uncontrolled terms:Clay particles - Infiltration characteristic - Infiltration process - Irrigation systems - Quadratic function - Sand particles - Soil water content - Vertical infiltration - Vertical lines - Wetting front  - Wetting fronts
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 821.3 Agricultural Methods - 802.3 Chemical Operations - 505 Mines and Mining, Nonmetallic - 944.2 Moisture Measurements - 483.1 Soils and Soil Mechanics - 444 Water Resources - 441 Dams and Reservoirs; Hydro Development - 407 Maritime and Port Structures; Rivers and Other Waterways - 471.1 Oceanography, General
DOI:10.3969/j.issn.1002-6819.2010.01.005
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 46>
Accession number:20101512841210
Title:Design of intelligent bio-acoustic frightening system against agriculture predators
Authors:Zhao, Wei (1); Lin, Tong (1); Guo, Jianquan (1); Yang, Jing (2); Huang, Chongpeng (2); Cui, Aifang (1); Xu, Baoguo (2)
Author affiliation:(1) State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; (2) Communication and Control Academy, Jiangnan University, Wuxi 214122, China
Corresponding author:Zhao, W.
      (zhaowei@tsinghua.edu.cn)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:199-204
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:As agriculture predators cause substantial damage to agricultural crops, an intelligent bio-acoustic frightening system has been designed against agriculture predators. In this system, the Wireless Sensor Networks (WSN) was used as communication and detection platform, and embedded system based on ARM9 MPU and AT89C51SND1 were used as hardware platform of the central-controller and the actuators. Agriculture predators were detected by the pyroelectric infrared sensor with its type determined according to the Crop types-Environment-Predator-Natural enemy model, then the actuator broadcasted the call of relative natural enemy to accomplish intelligent repelling against different agricultural predators. Compared with present repelling method which can be easily habituated by target predators, this system is more effective and covers lager area, and with better expansibility and flexibility. It is an intelligent and pollution-free solution against agriculture predators.
Number of references:16
Main heading:Wireless sensor networks
Controlled terms:Actuators - Crops - Embedded systems - Mammals - Sensor networks
Uncontrolled terms:Agricultural crops - Agricultural predators - Bio-acoustic frightening - Free solutions - Hardware platform - Natural enemies - Pyroelectric infrared sensors
Classification code:821.4 Agricultural Products - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 731.2 Control System Applications - 732 Control Devices - 732.1 Control Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 722.4 Digital Computers and Systems - 722 Computer Systems and Equipment - 716.3 Radio Systems and Equipment - 632 Hydraulics, Pneumatics and Related Equipment, and Fluidics - 602.1 Mechanical Drives - 461.9 Biology - 722.3 Data Communication, Equipment and Techniques
DOI:10.3969/j.issn.1002-6819.2010.01.035
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 47>
Accession number:20101512841208
Title:Automatic identification system of pigs with suspected case based on behavior monitoring
Authors:Zhu, Weixing (1); Pu, Xuefeng (1); Li, Xincheng (1); Lu, Chenfang (1)
Author affiliation:(1) College of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Zhu, W.
      (wxzhu@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:1
Issue date:January 2010
Publication year:2010
Pages:188-192
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:An automatic detection method of pigs with suspected case was proposed after analyzing the disadvantages of traditional observation methods. Based on ARM platform the embedded system was designed to monitor the excretion behavior of pigs behavior in 24 hours. When the abnormal behavior detected by the moving object detection and symmetrical pixel block image recognition algorithms took place, the relevant pig would be regarded as the suspected case and the corresponding image would be sent to the surveillance center through GPRS networks. The experiment results for 10 Yorkshire pigs showed that the detection accuracy of suspected case is 78.38%. The method and monitoring system will be helpful for improving production automation in modern pig farm.
Number of references:12
Main heading:Embedded systems
Controlled terms:Automation - Electronic data interchange - Image recognition - Military photography - Monitoring - Telecommunication systems
Uncontrolled terms:Abnormal behavior - Automatic detection method - Automatic identification system - Behavior monitoring - Case based - Detection accuracy - GPRS - GPRS network - Monitoring system - Moving-object detection  - Observation method - Pig behavior - Production automation - Yorkshire pigs
Classification code:741.1 Light/Optics - 742.1 Photography - 751.1 Acoustic Waves - 732 Control Devices - 941 Acoustical and Optical Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 731 Automatic Control Principles and Applications - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 404.1 Military Engineering - 722 Computer Systems and Equipment - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications
DOI:10.3969/j.issn.1002-6819.2010.01.033
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 48>
Accession number:20101512841217
Title:Fast method of egg image edge detecting based on dichotomy
Authors:Zhou, Ping (1); Zhao, Chunjiang (1); Zheng, Wengang (1); Wang, Jihua (1); Sun, Zhongfu (2); Wen, Youxian (3)
Author affiliation:(1) National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China; (2) Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (3) College of Engineering and Technology, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Zhao, C.
      (zhaocj@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:1
Issue date:January 2010
Publication year:2010
Pages:238-242
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:Machine vision technology is widely used in egg non-destructive sensory quality detection. Quickly getting the image edge will help more efficiently identify the geometric characteristic parameters. Inspired by the dichotomy algorithm to rapidly solve equations, this paper proposed the same idea to rapidly detect the image edge and set up the theoretical basis for it. The image was composed by rows of pixels and each row was named Line Image. The paper used the line image information to build an equation, which would transform the problem of edge detecting into the equal problem of equation solving. Besides, the paper gave the implementation steps about how to program in application. Experimental results show that the method can detect egg image edge, and the detection efficiency had been improved about 20 times, which will provide the egg automated industry with higher speed.
Number of references:19
Main heading:Edge detection
Controlled terms:Carbon fiber reinforced plastics - Computer vision
Uncontrolled terms:Automated industry - Detection efficiency - Edge detecting - Egg - Equation solving - Fast methods - Geometric characteristics - Image edge - Implementation steps - Line images  - Machine vision technologies - Non destructive - Sensory qualities - Theoretical basis
Classification code:751.1 Acoustic Waves - 741.2 Vision - 741.1 Light/Optics - 817.1 Polymer Products - 731.6 Robot Applications - 716 Telecommunication; Radar, Radio and Television - 415.2 Plastics Structural Materials - 723.5 Computer Applications
DOI:10.3969/j.issn.1002-6819.2010.01.042
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 49>
Accession number:20101512841184
Title:Effect of alternative furrow irrigation on growth and water use efficiency of cucumber in solar greenhouse
Authors:Cao, Qi (1); Wang, Shuzhong (2); Gao, Lihong (1); Ren, Huazhong (1); Chen, Qingyun (1); Zhao, Jingwen (2); Wang, Qian (1); Sui, Xiaolei (1); Zhang, Zhenxian (1)
Author affiliation:(1) College of Agriculture and Biotechnology, China Agriculture University, Beijing 100193, China; (2) Beijing Agro-Technicl Extension Center, Beijing 100101, China
Corresponding author:Zhang, Z.
      (Zhangzx@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:1
Issue date:January 2010
Publication year:2010
Pages:47-53
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:At present, the irrigation amount during cucumber production in solar greenhouse is excessive, and its water use efficiency is low. Jinyu No.5 cucumber (Cucumis sativus L) was grown under normal irrigation(CK), alternate furrow irrigation (AI) and alternate furrow deficient irrigation(DAI) conditions, respectively, to study the effects of these irrigation methods on yield, quality, water-saving and water use efficiency(WUE) of cucumber in solar greenhouse. The results showed that AI and ADI decreased soil deep leakage, soil surface evaporation, transpiration rate (TR), regulated photo-assimilation distribution, improved yield and quality of fruits, and there was no obvious effect on photosynthetic rate. AI and ADI saved water by 37%-48%, increased water use efficiency(WUE) by 47%-82%. The irrigation technology has an important popularization value and a good future.
Number of references:18
Main heading:Water treatment
Controlled terms:Biochemical oxygen demand - Crops - Greenhouse effect - Greenhouses - Irrigation - Soils - Solar heating - Transpiration - Water conservation - Water recycling  - Water supply
Uncontrolled terms:Alternate furrow irrigation - Cucumber - Cucumis sativus L - Deficient irrigation - Furrow irrigation - Irrigation methods - Irrigation waters - Photosynthetic rate - Soil surfaces - Solar greenhouse  - Transpiration rates - Water use efficiency
Classification code:483.1 Soils and Soil Mechanics - 641.2 Heat Transfer - 642.1 Process Heating - 643 Space Heating, Ventilation and Air Conditioning - 461.9 Biology - 643.1 Space Heating - 821.3 Agricultural Methods - 821.4 Agricultural Products - 821.6 Farm Buildings and Other Structures - 657.1 Solar Energy and Phenomena - 453.2 Water Pollution Control - 403.1 Urban Planning and Development - 443.1 Atmospheric Properties - 444 Water Resources - 445.1 Water Treatment Techniques - 402.1 Industrial and Agricultural Buildings - 446.1 Water Supply Systems - 452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and Disposal - 453 Water Pollution - 451 Air Pollution
DOI:10.3969/j.issn.1002-6819.2010.01.009
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 50>
Accession number:20101512841218
Title:Drought monitoring by remote sensing in winter-wheat-growing area of China
Authors:Sun, Li (1); Wang, Fei (1); Wu, Quan (1)
Author affiliation:(1) Chinese Academy of Agricultural Engineering Research and Planning, Beijing 100125, China
Corresponding author:Wu, Q.
      (wuquan95@tom.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:243-249
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Temperature Vegetation Drought Index (TVDI) and Vegetation Supply Water Index (VSWI) have been widely used for drought monitoring in recent years as they have clear significance in physics and they are easy to be gotten. Winter-wheat-growing area of China has been used as research region in this paper, EOS/MODIS data being used to construct those two indexes for drought monitoring during winter wheat growth in 2009. Through analyzing correlation between the two indexes and soil moistures in different depths, linear regression comparison and verification, conclusions have been drawn that both two indexes have better correlations with soil moisture in 10 cm depth than that in 20 cm depth, and TVDI has excellent correlation with soil moisture, but VSWI does not. As far as soil moisture being concerned for drought monitoring, TVDI surely perform better than VSWI. Furthermore, TVDI could clearly reflect the tendency of regional drought.
Number of references:33
Main heading:Drought
Controlled terms:Moisture control - Moisture determination - Radiometers - Remote sensing - Soil moisture - Spectrometers - Vegetation
Uncontrolled terms:AS-soils - Drought monitoring - MODIS data - Vegetation drought indices - Water index - Winter wheat
Classification code:944.7 Radiation Measuring Instruments - 944.2 Moisture Measurements - 941.3 Optical Instruments - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 801 Chemistry - 741.3 Optical Devices and Systems - 731.3 Specific Variables Control - 731.1 Control Systems - 525.1 Energy Resources and Renewable Energy Issues - 483.1 Soils and Soil Mechanics - 461.9 Biology - 444 Water Resources - 443.3 Precipitation
DOI:10.3969/j.issn.1002-6819.2010.01.043
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 51>
Accession number:20101512841199
Title:Analysis of adaptive flexibility of three-finger manipulator with six-joint for grasping apple
Authors:Zhang, Jun (1)
Author affiliation:(1) School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China; (2) State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
Corresponding author:Zhang, J.
      (jzhang@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:1
Issue date:January 2010
Publication year:2010
Pages:140-144
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to meet the need of all grasp for larger or small apples. A smart manipulator of three-finger with six-joint for grasp of apple was proposed. Three fingers were symmetrically fixed around circle. Each finger was with two hinge joints and driven by one piece of axial expanse artificial muscle. The equation between air pressure and grasp force was created. The elastic coefficients and preload angles of two torsion springs were obtained by global optimization. The results of calculation indicated that grasp load for larger or small apples under a setting system pressure did not damage the largest section apple without pressure feedback.
Number of references:15
Main heading:Fruits
Controlled terms:Atmospheric pressure - Flexible structures - Global optimization - Manipulators - Muscle
Uncontrolled terms:Air pressures - Artificial muscle - Elastic coefficient - Hinge joints - Manipulators robot - Preloads - Pressure feedback - System pressure - Torsion Springs
Classification code:821.4 Agricultural Products - 731.5 Robotics - 691.1 Materials Handling Equipment - 655.1 Spacecraft, General - 921.5 Optimization Techniques - 461.3 Biomechanics, Bionics and Biomimetics - 443.1 Atmospheric Properties - 441.1 Dams - 408.2 Structural Members and Shapes - 461.2 Biological Materials and Tissue Engineering
DOI:10.3969/j.issn.1002-6819.2010.01.024
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 52>
Accession number:20101512841223
Title:Reliability assessment based on Bayesian networks and time sequence simulation for distribution systems
Authors:Huang, Lihua (1); Li, Chunlan (2); Chen, Junhong (1); Xiao, Jinyong (3); Huo, Limin (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding 071001, China; (2) College of Science, Hebei Agricultural University, Baoding 071001, China; (3) Hebei Branch of China Huaneng Group, Shijiazhuang 050051, China
Corresponding author:Huang, L.
      (bdhlh@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:1
Issue date:January 2010
Publication year:2010
Pages:272-277
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:As the Bayesian network model suitable for distribution system reliability evaluation is inadequate, the compositions of Bayesian network model are researched, and "unite" relation models and "cause-effect" relation models are set up. As the accurate inference of Bayesian network to large-scale distribution systems reliability indices is difficult to calculate, a time sequence simulation inference algorithm based on Bayesian network and time sequence simulation technique is put forward. This algorithm can generate state of elements and random time period, inference the system states in real-time, aggregate the amount of time, consumer power cut frequency and amount. Using the cumulative amount may not only calculate the reliability indices of the system, but also carry out diagnostic reasoning and causal reasoning, thus can accomplish collectivity evaluation of the system and identify weak taches of strangulation system. By comparing with the result of the simulation inference algorithm and accurate inference algorithm, the simulation inference algorithm is reasonable and effective.
Number of references:20
Main heading:Bayesian networks
Controlled terms:Algorithms - Computational methods - Computer simulation - Distributed parameter networks - Inference engines - Intelligent networks - Local area networks - Pumps - Reliability analysis - Speech recognition
Uncontrolled terms:Accurate inference - Bayesian network models - Causal reasoning - Cause-effect - Cumulative amount - Diagnostic reasoning - Distribution system reliability - Distribution systems - Inference algorithm - Large-scale distribution systems  - Relation models - Reliability assessments - Reliability Index - Simulation technique - System state - Time periods - Time sequences
Classification code:723.4 Artificial Intelligence - 723.4.1 Expert Systems - 723.5 Computer Applications - 751.5 Speech - 913 Production Planning and Control; Manufacturing - 921 Mathematics - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 723 Computer Software, Data Handling and Applications - 422.2 Test Methods - 618.2 Pumps - 703.1 Electric Networks - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory
DOI:10.3969/j.issn.1002-6819.2010.01.048
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 53>
Accession number:20101512841224
Title:Purifying effect of drawer-type biofilter
Authors:Zhang, Dongsheng (1); Wu, Yin (1); Zhang, Xi (1); Ye, Fei (1); Sun, Jianming (2); Zhu, Ying (1)
Author affiliation:(1) Key Laboratory of Mariculture and Biotechnology, Ministry of Agriculture, Dalian Fisheries University, Dalian 116023, China; (2) Research Center for Facilities Fishery Engineer of Liaoning Province, Dalian Huxin Titanium Equipment Development Limited Company, Dalian 116023, China
Corresponding author:Wu, Y.
      (wuyin@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:1
Issue date:January 2010
Publication year:2010
Pages:278-281
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 contrast to submerged fixed bed biofilter, purifying effect of a drawer filter used in recirculating aquaculture system and effect of oxygen content on removal rates of TAN, NO<inf>2</inf>-N, COD, heterotrophic bacteria and vibrio were studied. The results showed that removal rates of TAN, NO<inf>2</inf>-N, COD, heterotrophic bacteria and vibrio of unit volume drawer filter were significantly higher than those of submerged fixed bed biofilter, which was 2.68, 7.37, 3.33, 24.87, 46.67 times higher than that of submerged fixed bed biofilter, respectively. The removal rates of TAN, NO<inf>2</inf>-N, COD, heterotrophic bacteria of unit volume filter material in high oxygen content condition were significantly higher than those in low oxygen content condition, but the removal rates of vibrio was lower than those in the low oxygen content condition; meanwhile the contents of TAN, NO<inf>2</inf>-N, COD, vibrio bacteria in high oxygen content condition were lower than that in low oxygen content condition. The fish grew well and the concentrations of TAN, NO<inf>2</inf>-N, COD were lower in the highest breed density. The survive rate of fish exceeded 98%. So, the drawer biofilter is a kind of biofilter with easy wash, small volume, high purifying efficiency. High oxygen content can increase fish growth rate and biofilter purifying rate, and can bate vibrio growth.
Number of references:15
Main heading:Biofiltration
Controlled terms:Agriculture - Aquaculture - Bacteria - Bacteriology - Biofilters - Biological filter beds - Biological sewage treatment - Chemical oxygen demand - Meats - Oxygen  - Sewage - Tanning - Water pollution - Water quality - Water treatment
Uncontrolled terms:Effect of oxygen - Filter materials - Fixed bed - Heterotrophic bacterias - Low oxygen - Oxygen content - Purifying effect - Recirculating aquaculture system - Removal rate - Unit volume
Classification code:461.8 Biotechnology - 461.9 Biology - 471.5 Sea as Source of Minerals and Food - 801.2 Biochemistry - 822.3 Food Products - 802 Chemical Apparatus and Plants; Unit Operations; Unit Processes - 814.2 Tanning - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 804 Chemical Products Generally - 453.2 Water Pollution Control - 453.1 Water Pollution Sources - 445.1 Water Treatment Techniques - 445.2 Water Analysis - 451.2 Air Pollution Control - 452 Municipal and Industrial Wastes; Waste Treatment and Disposal - 452.1 Sewage - 452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and Disposal - 453 Water Pollution
DOI:10.3969/j.issn.1002-6819.2010.01.049
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 54>
Accession number:20101512841215
Title:Method of traceability information acquisition and transmission for beef cattle sector based on PDA and FSM
Authors:Kang, Ruijuan (1); Zhang, Xiaoshuan (1); Fu, Zetian (2); Mu, Weisong (1)
Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (2) College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Mu, W.
      (wsmu@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:1
Issue date:January 2010
Publication year:2010
Pages:227-231
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For improving the efficiency and accuracy of information acquisition in beef cattle sector, a new approach to information acquiring and transmitting was put forward. It was the personal digital assistant (PDA) which was used to acquire the routine breeding information. And, based on finite state machine (FSM), the transmission of serial information transmission between PDA and PC was realized by event driven way. The modeling of finite state machine was emphatically studied. Changing the mode of information transmitting and acquiring in the beef cattle breeding, the transmission and acquisition was more speedy, effective and accurate and the efficiency of livestock farms management was improved.
Number of references:15
Main heading:Personal digital assistants
Controlled terms:Agriculture - Contour followers - Finite automata - Logic circuits - Meats - Mergers and acquisitions - Translation (languages)
Uncontrolled terms:Accuracy of information - Beef cattle - Event driven - Finite state machines - Information acquiring - Information transmission - Information transmitting - New approaches - Serial communications - Traceability information
Classification code:903.1 Information Sources and Analysis - 822.3 Food Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 723.5 Computer Applications - 912 Industrial Engineering and Management - 722 Computer Systems and Equipment - 721.2 Logic Elements - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 603.1 Machine Tools, General - 721.3 Computer Circuits
DOI:10.3969/j.issn.1002-6819.2010.01.040
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 55>
Accession number:20101512841231
Title:Effect of aeration on crystallization technology for nitrogen and phosphorus recovery from biogas fermentative liquid
Authors:Li, Liang (1); Wang, Dehan (1); Zou, Xuan (1); Xie, Xilong (1); Zeng, Ting (1); Li, Dan (1)
Author affiliation:(1) College of Resources and Environment, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Wang, D.
      (dehanwang@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:1
Issue date:January 2010
Publication year:2010
Pages:313-318
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 the biogas fermentative liquid treated by anaerobic digestion process from livestock wastewater as the research object, the effects of influent modes, aeration intensities, and hydraulic retention time (HRT) on lifting pH values were investigated by using the treatment method of aeration stripping. The variation laws of PO<inf>4</inf>^3--P, NH<inf>4</inf>⁺-N, Mg²⁺, Ca²⁺, and COD in aerating were studied too. The results showed that the effects of lifting pH values were obvious, the pH values of the biogas fermentative liquid were lifted from 7.27 to 8.5 in 2 hours after aerated. Then the pH value changed slowly and reached its maximum 9.3 at 12 hours. That created favorable condition of pH value for nitrogen and phosphorus recovery with crystallization technology. The effect of batch-influent was better than that of continuous-influent. The lifting speed accelerated when aeration intensity and HRT increased. The bigger the HRT was, the larger the lifting range was. The PO<inf>4</inf>^3--P, NH<inf>4</inf>⁺-N, Mg²⁺, Ca²⁺, and COD have been a regular downtrend in aerating. Recovery rate of phosphorus was almost 65%, while that of nitrogen was 20%-40%, and COD decreased by 20%-30%.
Number of references:21
Main heading:pH effects
Controlled terms:Agriculture - Anaerobic digestion - Biogas - Calcium - Chemical oxygen demand - Crystallization - Liquids - Nitrogen - Phosphorus - Stripping (dyes)  - Wastewater - Wastewater treatment
Uncontrolled terms:Aeration - Aeration intensity - Anaerobic digestion process - Favorable conditions - Fermentative liquid - Hydraulic retention time - Livestock wastewater - pH value - Phosphorus recovery - Recovery rate  - Research object - Treatment methods
Classification code:802.2 Chemical Reactions - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 933.1 Crystalline Solids - 804 Chemical Products Generally - 821.5 Agricultural Wastes - 931.2 Physical Properties of Gases, Liquids and Solids - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 801.1 Chemistry, General - 549.2 Alkaline Earth Metals - 452.2 Sewage Treatment - 452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 453 Water Pollution - 461.9 Biology - 522 Gas Fuels
DOI:10.3969/j.issn.1002-6819.2010.01.056
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 56>
Accession number:20101512841213
Title:Quality of service management in wireless sensor networks for greenhouse environmental control
Authors:Han, Antai (1); Guo, Xiaohua (2); Wu, Xiushan (1)
Author affiliation:(1) Institute of Electrical Engineering and Electronic Technology, China Jiliang University, Hangzhou 310018, China; (2) Hangzhou Vocational and Technical College, Hangzhou 310018, China
Corresponding author:Han, A.
      (antai.han@gmail.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:216-220
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reduce the impact of inherent network time-varying delay, packet loss, network congestion and other phenomena on control performance of the greenhouse environmental control system based on wireless sensor networks, the QoS management strategy based on Takagi-Sugeno fuzzy logic controller were proposed from the perspective of improving quality of service (QoS). The basic idea of the proposed QoS management strategy is to use deadline miss ratio as the evaluating index of the QoS and to adapt the sampling period of each sensor nodes by means of feedback control technology at run time so that the deadline miss ratio associated with the real-time data transmission from the sensor nodes to the actuator nodes is maintained at a pre-determined desired level and the required QoS can be achieved. Preliminary experimentations indicate the rationality, effectiveness and practicability of the proposed QoS management strategy. It can be effectively applied to the greenhouse, the field cropland, and the nursery garden, etc. This research contributes to the exploration on how to improve the application level of wireless sensor networks in facility agriculture.
Number of references:24
Main heading:Wireless sensor networks
Controlled terms:Computer software - Environmental engineering - Fuzzy logic - Greenhouses - Information systems - Knowledge management - Management - Management information systems - Quality control - Quality of service  - Sensor networks - Sensor nodes - Telecommunication equipment - Time varying networks
Uncontrolled terms:Application level - Basic idea - Control performance - Deadline miss ratio - Environmental control - Environmental control system - Evaluating index - Network congestions - QOS management - Real time data transmission  - Runtimes - Sampling period - Systems quality - Takagi-sugeno fuzzy logic controllers - Time-varying delay
Classification code:723.2 Data Processing and Image Processing - 723.5 Computer Applications - 731.1 Control Systems - 732 Control Devices - 723 Computer Software, Data Handling and Applications - 821.6 Farm Buildings and Other Structures - 903.3 Information Retrieval and Use - 912.2 Management - 913.3 Quality Assurance and Control - 903.2 Information Dissemination - 722.4 Digital Computers and Systems - 454 Environmental Engineering - 703.1 Electric Networks - 716 Telecommunication; Radar, Radio and Television - 716.3 Radio Systems and Equipment - 402.1 Industrial and Agricultural Buildings - 717 Optical Communication - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 722 Computer Systems and Equipment - 722.3 Data Communication, Equipment and Techniques - 718 Telephone Systems and Related Technologies; Line Communications
DOI:10.3969/j.issn.1002-6819.2010.01.038
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 57>
Accession number:20101512841198
Title:Flow analysis on fluidic element of complete fluidic sprinkler
Authors:Xiang, Qingjiang (1); Yuan, Shouqi (1); Li, Hong (1)
Author affiliation:(1) Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Xiang, Q.
      (xiang_qj@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:135-139
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 fluidic element of complete fluidic sprinkler has great influence on the work performance of sprinkler, and the size design is affected by the liquid-gas two-phase inner flow. Two and three dimensional wall attaching offset jets had been numerically simulated by using the volume of fluid (VOF) model, and the wall pressure distribution, velocity decay on the jet centerline, nondimensional reattachment length and liquid-gas two-phase interface position were obtained. For the wall static pressure, the numerical results were consistent with the experimental data. Under the same inlet velocity, the maximal point of wall pressure decreased and the wall attachment point moved down with the increasing of the offset ratio. For the wall attaching jet with small offset ratio, an empirical relationship between the nondimensional reattachment length and offset ratio was summarized. The simulation results are of useful in guiding the fluidic element size design.
Number of references:14
Main heading:Phase interfaces
Controlled terms:Atomizers - Computational methods - Flow fields - Flow simulation - Liquids - Nozzles - Numerical analysis - Three dimensional - Wall flow
Uncontrolled terms:Centerlines - Complete fluidic sprinkler - Experimental data - Flow analysis - Inlet velocity - Inner flow - Nondimensional - Numerical results - Offset jet - Offset ratio  - Reattachment length - Simulation result - Static pressure - Two-phase interfaces - Velocity decay - Volume of fluid model - Wall attaching offset jet - Wall pressure - Wall-pressure distribution - Work performance
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 921.6 Numerical Methods - 921 Mathematics - 902.1 Engineering Graphics - 802.1 Chemical Plants and Equipment - 801.4 Physical Chemistry - 723.5 Computer Applications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 651.2 Wind Tunnels - 631.1.1 Liquid Dynamics - 631.1 Fluid Flow, General
DOI:10.3969/j.issn.1002-6819.2010.01.023
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 58>
Accession number:20101512841233
Title:Effect of stacking height on maturity during composting of municipal solid waste under 0-15 mm sieved
Authors:Shi, Dianlong (1); Zhang, Zhihua (2); Li, Guoxue (3); Zhang, Hongyu (3); Wang, Guiqin (4); Xu, Degang (3)
Author affiliation:(1) College of Resource and Environment Science, Jilin Agricultural University, Jilin 130118, China; (2) China Green Food Development Center, Beijing 100081, China; (3) College of Resource and Environment Science, China Agricultural University, Beijing 100094, China; (4) Beijing Environmental Sanitation Engineering Research Institute, Beijing 100028, China
Corresponding author:Li, G.
      (ligx@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:1
Issue date:January 2010
Publication year:2010
Pages:324-329
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 0-15 mm screened municipal solid waste from Beijing Majialou Municipal Solid Waste Transfer Station, the research using closed static technology was conducted in the tunnels of Nan Gong Composting Factory to understand the feasibility of small size municipal solid waste composting and select the optimum heap high of composting. Four treatments were arranged, which had different heap heights namely 2.5, 2.0, 1.5 and 1.0 m, respectively. Samples taken from each treatment after eight day of high temperature composting were analyzed with the maturity indexes including electric conductivity (EC), E<inf>4</inf>/E<inf>6</inf>, water soluable carbon (WSC), NH<inf>4</inf>⁺-N, C/N, germination index (GI), value of fecal coliform, which was combined with a fuzzy comprehensive evaluation to evaluate the maturity. The results showed that 0-15 mm municipal solid waste could be composted individually, and the optimum maturity heap heights were 1.5 m and 1.0 m. But the optimum heap height of tunnel composting was 1.5 m when there was more integration.
Number of references:10
Main heading:Waste treatment
Controlled terms:Electric conductivity - Electric conductivity measurement - Fermentation - Solid wastes - Wind tunnels
Uncontrolled terms:Fecal Coliform - Fuzzy comprehensive evaluation - Germination index - Heap height - High temperature - Maturity - Municipal Solid Waste - Small size - Static technology
Classification code:821.5 Agricultural Wastes - 811 Cellulose, Paper and Wood Products - 805.1.1 Biochemical Engineering - 802.2 Chemical Reactions - 801.2 Biochemistry - 942.2 Electric Variables Measurements - 701.1 Electricity: Basic Concepts and Phenomena - 461.8 Biotechnology - 452.4 Industrial Wastes Treatment and Disposal - 452.3 Industrial Wastes - 422.1 Test Equipment - 651.2 Wind Tunnels
DOI:10.3969/j.issn.1002-6819.2010.01.058
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 59>
Accession number:20101512841192
Title:Rapid assessment of regional soil erosion based on fuzzy neural system and GIS
Authors:Zhu, Dun (1); Wang, Tianwei (1); Cai, Chongfa (1); Li, Lu (1); Shi, Zhihua (1)
Author affiliation:(1) College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Cai, C.
      (cfcai@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:1
Issue date:January 2010
Publication year:2010
Pages:103-107
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:Reliable soil erosion investigation and assessment are important parts for implementing effective soil and water conservation measure. In order to assess soil erosion status at regional scale rapidly and effectively, this paper presented a assessment approach integrating fuzzy neural system and GIS technique. By using that approach, five environment factors of soil erosion were selected as evaluating indicators, and proper basic assessment units were then created with GIS overlay analysis, after that comprehensive erosion assessment rules for basic assessment units were extracted from field survey data with neuro-fuzzy system. Thus it was capable to establish evaluating criteria, which could reflect the inherent characters between the multiple environment factors and the soil erosion patterns in the specific areas. Supported with GIS technique, it was easily to scale up erosion assessment from field-plot scale to regional scale. Application of the approach to Hubei Province, the results showed that about 30.1% of the total land area in Hubei Province was affected by different levels of soil erosion problem. In the western and eastern mountain areas soil erosion damages were very severe, and the northern hills mainly suffered from moderate erosion and chiefly slight in the central plains. Comparison of the results with actual conditions, it indicated that they were in good conformity, proving that the approach was reasonable and applicable.
Number of references:27
Main heading:Soil conservation
Controlled terms:Fuzzy logic - Fuzzy systems - Geographic information systems - Information systems - Soil mechanics - Soils - Water conservation
Uncontrolled terms:Assessment approaches - Evaluating criteria - Evaluating indicators - Field surveys - Fuzzy neural system - Fuzzy neural systems - Hubei Province - Land areas - Neurofuzzy system - Overlay analysis  - Rapid assessment - Regional scale - Scale-up - Soil and water conservation - Soil erosion - Specific areas
Classification code:921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 903.3 Information Retrieval and Use - 903.2 Information Dissemination - 821.3 Agricultural Methods - 731.1 Control Systems - 961 Systems Science - 723.4 Artificial Intelligence - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 483.1 Soils and Soil Mechanics - 444 Water Resources - 403.1 Urban Planning and Development - 723.3 Database Systems
DOI:10.3969/j.issn.1002-6819.2010.01.017
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 60>
Accession number:20101512841181
Title:Simulation of water and salt transport of uncultivated land in Hetao Irrigation District in Inner Mongolia
Authors:Li, Liang (1); Shi, Haibin (1); Jia, Jinfeng (1); Wang, Changsheng (2); Liu, Hongyun (2)
Author affiliation:(1) College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China; (2) Shahaoqu Experimental Station of Hetao Irrigation District, Hangjinhouqi 015400, China
Corresponding author:Shi, H.
      (shi_haibin@sohu.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 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:Water and salt transport was studied in the uncultivated land of Hetao Irrigation District in Inner Mongolia. Based on field experiment, mechanism of water and salt transport of the uncultivated land in the irrigation district was analyzed, and its water and salt transport dynamics were simulated with HYDRUS-1D model. The uncultivated land in the irrigation district had become salt storage area and the important regulator for water and salt balance in the irrigation district, and study on water and salt dynamic in uncultivated land was of significance for uncultivated irrigation district. The results showed that strong evaporation was the driving force for water and salt transport, EC values in soil layers of 5 cm had increased by 66.10%, and EC values in soil layers of 20 cm had increased by 63.89%. The uncultivated land underwent salt accumulating process in crop growing period but salt losing process in autumn irrigation period. Verification using the experiment data indicated that HYDRUS-1D model had a high precision for the simulation of water and salt transport of the uncultivated land in vertical direction. The results can serve as a scientific basis for regional water and salt management and sustainable development of the irrigation districts.
Number of references:19
Main heading:Irrigation
Controlled terms:Cultivation - Electric conductivity measurement - Experiments - Geologic models - Moisture determination - Salts - Soil moisture - Strategic planning
Uncontrolled terms:Driving forces - Experiment data - Field experiment - Growing period - High precision - HYDRUS-1D - HYDRUS-1D model - Inner Mongolia - Irrigation districts - Irrigation period  - Salt balances - Salt transport - Soil layer - Storage area - Vertical direction
Classification code:944.2 Moisture Measurements - 942.2 Electric Variables Measurements - 912.2 Management - 901.3 Engineering Research - 821.3 Agricultural Methods - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 483.1 Soils and Soil Mechanics - 481.1 Geology
DOI:10.3969/j.issn.1002-6819.2010.01.006
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 61>
Accession number:20101512841187
Title:Dynamic variation and impact factors of red soil moisture in low mountain-hilly region
Authors:Fang, Kun (1); Chen, Xiaomin (1); Du, Zhenjie (1); Zhang, Jiabao (2); Deng, Jianqiang (1)
Author affiliation:(1) College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (2) State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Acad. of Sci., Nanjing 210008, China; (3) Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
Corresponding author:Chen, X.
      (xmchen@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:1
Issue date:January 2010
Publication year:2010
Pages:67-72
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 red soil, distributed in many provinces in China, has great potential for agricultural development. But seasonal drought and low available soil moisture restrict agricultural production in the red soil region. In the study, soil moisture and physic-chemical properties of red soil were determined to analyze the soil moisture dynamic variation in different periods and to find out the profit and loss of soil moisture and their impact factors. The results showed that the variation of red soil moisture in one year could be divided into four phases: filling phase (from March to June), deficit phase (from June to August), recovery phase (from August to October), and stable phase (from October to March). In different experimental plots, meteorological factors had different influences. Effects of evaporation on N plot, NP plot, and NPK plot showed the digressive trend. On contrast, effects of rainfall showed the ascending trend. The plot with no fertilizer, which had no plant growth, could be influenced directly by evaporation or rainfall. It can play a very important role in water resources management, irrigation arrangement and drought evaluation by mastering the trend of the soil moisture dynamic variation in the red soil region.
Number of references:14
Main heading:Soil surveys
Controlled terms:Agriculture - Chemical properties - Drought - Dynamic response - Evaporation - Indexing (of information) - Landforms - Moisture determination - Plant life extension - Profitability  - Soil moisture - Water resources
Uncontrolled terms:Agricultural development - Agricultural productions - Dynamic variations - Impact factor - Meteorological factors - Moisture soil - Physic-chemical properties - Plant growth - Profit and loss - Recovery phase  - Red soil - Red soils - Soil moisture dynamics - Stable phase - Water resources management
Classification code:801 Chemistry - 802.3 Chemical Operations - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 903.1 Information Sources and Analysis - 911.2 Industrial Economics - 912.1 Industrial Engineering - 944.2 Moisture Measurements - 483.1 Soils and Soil Mechanics - 402.1 Industrial and Agricultural Buildings - 406.2 Roads and Streets - 408.1 Structural Design, General - 423 Non Mechanical Properties and Tests of Building Materials - 443.3 Precipitation - 444 Water Resources - 481.1 Geology
DOI:10.3969/j.issn.1002-6819.2010.01.012
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 62>
Accession number:20101512841188
Title:Effect of slight saline water irrigation on soil salinity and yield of crop
Authors:Ma, Wenjun (1); Cheng, Qinjuan (3); Li, Liangtao (1); Yu, Zhenrong (1); Niu, Ling'an (1)
Author affiliation:(1) College of Resources and Environment, China Agricultural University, Beijing 100193, China; (2) Magazines Company, Chang'an University, Xi'an 710064, China; (3) Editorial Department of Journal of Shaanxi Normal University, Xi'an 710062, China
Corresponding author:Yu, Z.
      (yuzhr@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:1
Issue date:January 2010
Publication year:2010
Pages:73-80
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:Irrigation water for agricultural use is severe shortage in North China Plain. The conflict between water resources lacking and food demand increasing is increasingly sharp. Using slightly saline water resources is one of the important ways to alleviate the conflict. Based on the experiment which focuses on the effect of slightly saline water irrigation on soil salinity and yield of winter wheat and summer maize in Quzhou Experimental Station of China Agricultural University from 1997 to 2005, five treatments (fully irrigated with fresh water, economically irrigated with fresh water, fully irrigated with fresh-saline water, economically irrigated with fresh-saline water and control, i.e., no irrigation) was designed, dynamics of saturated soil electrical conductivity and salt contents under slightly saline water irrigation were studied, and the effects of slightly saline water irrigation on yield of winter wheat and maize were discussed. The results showed that soil water and salinity turn on the short-term and long-term fluctuations which are affected by amounts of irrigation and rainfall and changes of seasons; Generally, it was feasible to irrigate with saline water in field that it would not cause salinization; Compared with the treatment of fully irrigated with fresh, yield of winter wheat and maize decreased by 10%-15% and fresh water saved 60%-75% under the treatment of fully irrigated with fresh-saline water. If rainfall reaches to the normal level and saline water irrigation schedule is rational, the utilization of saline water for winter wheat and maize could be prospective for the sustainable agriculture.
Number of references:36
Main heading:Saline water
Controlled terms:Electric conductivity - Irrigation - Land use - Salinity measurement - Soil moisture - Underwater soils - Water recycling - Water resources - Water supply
Uncontrolled terms:Agricultural use - Electrical conductivity - Experimental stations - Food demand - Fresh Water - In-field - Irrigation schedule - Irrigation waters - North China Plain - Salt content  - Saturated soils - Soil salinity - Soil water - Summer maize - Sustainable agriculture - Winter wheat
Classification code:821.3 Agricultural Methods - 701.1 Electricity: Basic Concepts and Phenomena - 483.1 Soils and Soil Mechanics - 471.4 Seawater, Tides and Waves - 471.1 Oceanography, General - 943.3 Special Purpose Instruments - 453.2 Water Pollution Control - 445.1 Water Treatment Techniques - 444 Water Resources - 442.2 Land Reclamation - 403 Urban and Regional Planning and Development - 446.1 Water Supply Systems
DOI:10.3969/j.issn.1002-6819.2010.01.013
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 63>
Accession number:20101512841178
Title:Sprinkler irrigation scheme of winter wheat based on water surface evaporation of a 20 cm standard pan
Authors:Liu, Haijun (1); Huang, Guanhua (2); Wang, Mingqiang (2); Yu, Lipeng (2); Ye, Dezhi (2); Kang, Yuehu (3); Liu, Shiping (3); Zhang, Jiyang (4)
Author affiliation:(1) College of Water Science, Beijing Normal University, Beijing 100875, China; (2) College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China; (3) Institute of Geographic Sciences and Natural Resources Research, Chinese Acad. of Sci., Beijing 100101, China; (4) Key Lab. for Crop Water Requirement and Regulation, Ministry of Agriculture, Xinxiang 453003, China
Corresponding author:Zhang, J.
      (firizjy@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:1
Issue date:January 2010
Publication year:2010
Pages:11-17
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:The objective of this paper is to find a simple and easily fulfilling sprinkler irrigation scheduling for winter wheat using the standard 20 cm evaporation pan. An experiment was conducted in 2005-2006 and 2006-2007 winter wheat seasons at Tongzhou Experimental Base for Water-Saving Irrigation Research, Chinese Academy of Sciences. The objective of the experiment was to study the responses of soil water content, winter wheat growth and yield, evapotranspiration and water use efficiency to five sprinkler irrigation amounts, which were 0.25, 0.50, 0.75, 1.00 and 1.25 times of 20 cm pan evaporation (E). Non-irrigation field was arranged as a control. Possibility of making sprinkler irrigation scheduling using 20 cm pan was also discussed. Results showed that soil water content changed greatly within 0-60 cm soil layer under the five sprinkler irrigation conditions. Less sprinkler water amount (&lt;0.25E) limited the leaf area index and dry biomass of winter wheat, and over-amount sprinkler water (&gt;1.00E) also limited winter wheat growth. The seasonal evapotranspiration of winter wheat was between 312 and 508 mm, and generally increased with sprinkler water amount. When sprinkler water amounts were within 0.50 and 0.75 times of pan evaporation, winter wheat yield and water use efficiency were the highest or approaching the highest. While both less sprinkler water (&le0.25E) and over irrigation water (&ge;1.00E) negatively affected winter wheat yield and water use efficiency. In a conclusion, sprinkler water amount of 0.50-0.75 times of pan evaporation and a sprinkler interval of 5-7 days were recommended for winter wheat cultivation after winter wheat reviving stage in the Beijing area, China.
Number of references:28
Main heading:Sprinkler systems (irrigation)
Controlled terms:Biochemical oxygen demand - Evaporation - Evapotranspiration - Experiments - Forestry - Scheduling - Soil moisture - Sprinkler systems (fire fighting) - Underwater soils - Water conservation  - Water content - Water supply
Uncontrolled terms:Beijing area - Chinese Academy of Sciences - Dry biomass - Growth and yield - Irrigation waters - Leaf Area Index - Pan evaporation - Seasonal evapotranspirations - Soil layer - Soil water content  - Sprinkler irrigation - Sprinkler systems - Water amount - Water surface - Water use efficiency - Water-saving irrigation - Winter wheat
Classification code:483.1 Soils and Soil Mechanics - 802.3 Chemical Operations - 821.0 Woodlands and Forestry - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research - 912.2 Management - 914.2 Fires and Fire Protection - 471.1 Oceanography, General - 403.1 Urban Planning and Development - 444 Water Resources - 444.1 Surface Water - 446.1 Water Supply Systems - 452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and Disposal - 453 Water Pollution
DOI:10.3969/j.issn.1002-6819.2010.01.003
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 64>
Accession number:20101512841207
Title:Linear robust observer design for electro-hydraulic valve-controlled single rod cylinder servo system
Authors:Ming, Tingtao (1); Zhang, Yongxiang (1); Shen, Jianchun (2); Yao, Xiaoshan (1)
Author affiliation:(1) College of Naval Architecture and Power, Naval University of Engineering, Wuhan 430033, China; (2) Naval Supervising Room of Equipment Maintenance in the Shanghai Area, Shanghai 200136, China
Corresponding author:Ming, T.
      (mtt1021@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:1
Issue date:January 2010
Publication year:2010
Pages:182-187
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 detect faults of electro-hydraulic servo system effectively, it is important to design an ascendant observer beforehand. This paper presents a method of linear robust observer design for electro-hydraulic valve-controlled single rod cylinder servo system. Firstly, the nonlinear model is applied in this study. Secondly, the linear modeling process is recapped by highlighting the likely uncertainties which influence the implementation of model-based approaches. Finally, the linear robust observer is designed in the presence of unknown inputs, such as model errors, parameters fluctuation, force disturbance, process noise, measurement noise. Case simulation under light running reveals that this observer is being of some robustness.
Number of references:14
Main heading:Observability
Controlled terms:Cylinders (shapes) - Design - Hydraulic equipment - Hydraulic servomechanisms - Hydraulics - Measurement errors - Nonlinear equations - Synchros
Uncontrolled terms:Electro hydraulic servo system - Electro-hydraulic valves - Linear modeling - Linear robust observer - Measurement Noise - Model based approach - Model errors - Non-linear model - Process noise - Robust observers  - Servo system - Unknown inputs
Classification code:921.1 Algebra - 902.1 Engineering Graphics - 732.1 Control Equipment - 731.1 Control Systems - 922 Statistical Methods - 705.3 Electric Motors - 632.1 Hydraulics - 408.2 Structural Members and Shapes - 408 Structural Design - 632.2 Hydraulic Equipment and Machinery
DOI:10.3969/j.issn.1002-6819.2010.01.032
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 65>
Accession number:20101512841204
Title:Design and test on straw-mulching cutlass of whole rice straw returning machine based on genetic algorithm
Authors:Wang, Jinwu (1); Ge, Yiyuan (1); Wang, Jinfeng (1)
Author affiliation:(1) Engineering College, Northeast Agricultural University, Harbin 150030, China
Corresponding author:Wang, J.
      (jinwuw@163.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:166-170
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:Genetic algorithm is a kind of search and optimization method which based on the life-evolution mechanism, and it can be used to solve complex optimization problems for its peculiarity of the global optimum and the implied parallel. This paper took straw-mulching cutlass as study object which was the main working part of the whole rice straw returning machine, and its force analysis was carried out. The optimization model of power loss was established by taking cutter slices combination parameters as design variable, and the optimization method based on genetic algorithm was developed. Results showed that the minimum power loss of cutter slices was 5.12 kW. The validation experiments verified that the minimum power loss was 5.5305 kW under the conditions of optimum parameter combination, which accorded with optimization results. The optimization method is feasible, which can provide theoretical reference for the whole machine optimization.
Number of references:17
Main heading:Machine design
Controlled terms:Agricultural machinery - Genetic algorithms - Optimization
Uncontrolled terms:Complex optimization - Design variables - Evolution mechanism - Force analysis - Global optimum - Optimization method - Optimization models - Optimum parameters - Power-losses - Rice straws  - Whole machine - Working parts
Classification code:601 Mechanical Design - 723 Computer Software, Data Handling and Applications - 821.1 Agricultural Machinery and Equipment - 921 Mathematics - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2010.01.029
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 66>
Accession number:20101512841182
Title:Effect of reclaimed water irrigation on yield and quality of fruity vegetables
Authors:Wu, Wenyong (1); Xu, Cuiping (1); Liu, Honglu (1); Hao, Zhongyong (1); Ma, Fusheng (1); Ma, Zhijun (1)
Author affiliation:(1) Beijing Hydraulic Research Institute, Beijing 100044, 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:1
Issue date:January 2010
Publication year:2010
Pages:36-40
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 promoting feasible classification of crops for reclaimed water irrigation, the effect of reclaimed water irrigation (RWI) on the yield and quality of fruity vegetables was conducted. The yield of fruity vegetables significantly increased under the condition of RWI. The tests results indicated that the average yield of tomato and cucumber under the condition of RWI increased by 15.1% and 23.6%, and the average yield of eggplant and kidney bean under the condition of RWI increased by 60.7% and 7.4% compared with control check. There were no significant differences of reclaimed water irrigation on water content, crude protein, amino acid content, soluble sugar, vitamin C, coarse ash, nitrate, nitrite and nutrition indexes of fruity vegetables. Both nitrate content and nitrite content under the condition of RWI were below the standard limit. The study can provide technical basis for selecting the crops which are suitable for reclaimed water irrigation.
Number of references:17
Main heading:Wastewater reclamation
Controlled terms:Amino acids - Crops - Irrigation - Organic acids - Sugar (sucrose) - Vegetables - Wastewater - Water content - Water resources
Uncontrolled terms:Average yield - Crude proteins - Kidney beans - Quality - Re-claimed water - Soluble sugars - Vegetable - Vitamin C
Classification code:822.3 Food Products - 821.4 Agricultural Products - 821.3 Agricultural Methods - 804.1 Organic Compounds - 461 Bioengineering and Biology - 454.2 Environmental Impact and Protection - 452.4 Industrial Wastes Treatment and Disposal - 452.3 Industrial Wastes - 444 Water Resources
DOI:10.3969/j.issn.1002-6819.2010.01.007
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 67>
Accession number:20101512841179
Title:Grain filling characteristics of winter wheat with regulated deficit irrigation and its simulation models
Authors:Meng, Zhaojiang (1); Sun, Jingsheng (1); Duan, Aiwang (1); Liu, Zugui (1); Wang, Hezhou (1)
Author affiliation:(1) Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China; (2) Key and Open Laboratory of Crop Water Requirements Regulation, Ministry of Agriculture, Xinxiang 453003, China
Corresponding author:Meng, Z.
      (zjmeng5@tom.com)
   
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:26
Issue:1
Issue date:January 2010
Publication year:2010
Pages:18-23
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:Under the conditions of mobile rain-proof shelter and winter wheat cultivated in plots, effect of regulated deficit irrigation (RDI) on grain filling characteristics of winter wheat was investigated. A two-factor (growing stages introducing RDI and degrees of water deficit) randomized block designed experiment was employed in pot culture. The results showed that the grain filling course of winter wheat under RDI accorded with "S" growth curve of "slow-fast-slow", which could be simulated well by Richards equation. There were significant differences among some of filling characteristic parameters under different water deficit treatments such as maximum filling rate and its appearing time, average filling rate, filling duration, active growing duration, and filling duration time of each filling phase as well as 1000-grain weight (GW). Light water deficit in wintering period had the highest average filling rate (0.234 g/d per 100 grains), biggest filling rate (0.369 g/d per 100 grains), filling rate of the third phase (0.099 g/d per 100 grains), and 1000-GW (58.46 g). Results from correlation and stepwise regression analysis methods indicated that there were significant or very significant correlations among most parameters, in which biggest filling rate, average filling rate, active growing duration and filling rate of the third phase were significantly correlated to GW.
Number of references:15
Main heading:Filling
Controlled terms:Cultivation - Grain (agricultural product) - Grain growth - Irrigation - Regression analysis
Uncontrolled terms:Grain - Grain filling - Grain filling characteristic - Regulated deficit irrigation - Winter wheat
Classification code:933.1.2 Crystal Growth - 922.2 Mathematical Statistics - 821.4 Agricultural Products - 821.3 Agricultural Methods - 802.3 Chemical Operations - 691.2 Materials Handling Methods - 531.2 Metallography
DOI:10.3969/j.issn.1002-6819.2010.01.004
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.

<RECORD 68>
Accession number:20101512841177
Title:Rules of soil evaporation and millet evapotranspiration in rain-fed region of loess plateau in Northern Shaanxi
Authors:Wang, Youqi (1); Fan, Jun (1); Shao, Ming'an (1)
Author affiliation:(1) State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Collage of Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Shao, M.
      (mashao@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:1
Issue date:January 2010
Publication year:2010
Pages:6-10
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For improving precipitation use efficiency of millet in rain-fed region of Loess Plateau, the middle weighing lysimeter, micro-lysimeter and biological indicators were combined in this experiment to determine the soil evaporation and millet evapotranspiration during the whole growing period of millet in Liudaogou watershed of Shenmu County. The results showed that the Logistic model could simulate the growing processes of millet height and coverage, the correlation coefficients of simulated and measured values reached 0.99. Total precipitation was almost equal to the water consumption of millet, but from heading to filling stage millet suffered water stress. In the whole growing period of millet, about 44% of the total field evapotranspiration was consumed by the soil evaporation. There were significant exponential function relations between leaf area index, soil moisture at in 0-10 cm depth and the ratio of evaporation and evapotranspiration, the correlation coefficients were higher than 0.8. The study can provide theoretical support for rational use of limited water resources and improvement of water use efficiency in rain-fed region of Loess Plateau in Northern Shaanxi.
Number of references:16
Main heading:Water supply
Controlled terms:Cultivation - Evaporation - Evapotranspiration - Exponential functions - Lysimeters - Moisture determination - Plants (botany) - Rain - Soil moisture - Soil surveys
Uncontrolled terms:Biological indicators - Correlation coefficient - Field evapotranspiration - Filling stage - Growing period - Growing process - Leaf Area Index - Loess Plateau - Logistic models - Millet  - Precipitation use efficiencies - Total precipitation - Water consumption - Water stress - Water use efficiency
Classification code:943.3 Special Purpose Instruments - 921 Mathematics - 821.3 Agricultural Methods - 802.3 Chemical Operations - 631.1 Fluid Flow, General - 944.2 Moisture Measurements - 483.1 Soils and Soil Mechanics - 446.1 Water Supply Systems - 444.1 Surface Water - 443.3 Precipitation - 406.2 Roads and Streets - 461.9 Biology
DOI:10.3969/j.issn.1002-6819.2010.01.002
Database:Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.