<RECORD 1>

Accession number:20124415630976
Title:Optimal design of grain tracer based on fuzzy comprehensive analysis method
Authors:Liang, Kun (1); Shen, Mingxia (1); Ge, Yufeng (2)
Author affiliation:(1) Department of Electrical Engineering, Nanjing Agriculture University, Nanjing 210031, China; (2) Biological and Agricultural Engineering Department, Texas A and M University, College Station, TX 77843, United States
Corresponding author:Shen, M.(mingxia@njau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:246-250
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:Information identification is one of key technologies in food safety traceability. The effective information identification technology should include the characteristics of unique, recognition robustness and wear resistance. In order to overcome the problem of grain hard tracing to origin because of multi-source mixing in supply chain, the grain tracer method was used to identity grain information, and a two-factor factorial design was employed to analyze the influence of different formation pressures and constituent formulations on surface roughness. The results were analyzed by fuzzy comprehensive evaluation method to determine the optimum combinations process parameters. The results can provide a foundation for the subsequent tracer information identification and improvement of the tracer produce.
Number of references:21
Main heading:Surface roughness
Controlled terms:Accident prevention - Grain (agricultural product) - Identification (control systems) - Supply chains
Uncontrolled terms:Comprehensive analysis - Factorial design - Formation pressure - Fuzzy comprehensive evaluation - Fuzzy comprehensive evaluation method - Identification technology - Key technologies - Multisources - Optimal design - Optimum combination  - Process parameters - Tracer - Tracer methods
Classification code:731.1 Control Systems - 821.4 Agricultural Products - 912 Industrial Engineering and Management - 913 Production Planning and Control; Manufacturing - 914.1 Accidents and Accident Prevention - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.3969/j.issn.1002-6819.2012.15.039
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 2>

Accession number:20124415630950
Title:Effects of natural and artificial vegetation types on soil properties in Loess Hilly region
Authors:Wang, Kaibo (1); Shi, Weiyu (1); Shangguan, Zhouping (2)
Author affiliation:(1) State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China; (2) State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, China
Corresponding author:Shangguan, Z.(shangguan@ms.iswc.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:80-86
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:The effects on improving soil quality between different vegetation types on the Loess Plateau are quite different. Studies on the effects of natural and artificial vegetation type on soil characteristics are help to understand the relationships of vegetation restoration and soil quality, and also beneficial to accurate assessment of environmental benefits of different vegetation restoration models on the Loess Plateau. In this study, the Yangou watershed located in the center Loess Hilly region was taken as a case. By comparing the soil physical and chemical properties of 11 typical vegetation types, the effects on soil properties between natural and artificial vegetation types were analyzed. The results showed that the natural and artificial vegetation types have significantly different effects on the soil properties. The order of soil water content in 200 cm layer in different vegetation types was farmland &gt; natural grassland &gt; artificial woodland &gt; orchard &gt; artificial shrub land &gt; natural shrub land. Compared with farmland, soil bulk density of natural shrub land and natural grassland reduced the most obviously, while soil bulk density of artificial woodland, artificial shrub land and orchard had fewer differences in decline. Soil organic matter and total nitrogen had markedly improved in natural shrub land, natural grass and artificial shrub land, while they didn't improve much in artificial woodlands and orchard. Soil organic matter and total nitrogen of different vegetation declined with soil depth. The vertical changes in soil organic matter and total nitrogen of farmland, orchard and artificial woodland were less, while that of natural shrub land, natural grassland and artificial shrub land changed greatly. Soil total phosphorus changed little among different vegetation types and in soil profile. Overall, the natural vegetation types were better than artificial vegetation types in improving soil properties, and the artificial shrubs were better than artificial forest in improving soil properties in Loess Hilly region.
Number of references:26
Main heading:Vegetation
Controlled terms:Biogeochemistry - Biological materials - Chemical properties - Geologic models - Moisture - Orchards - Organic compounds - Restoration - Soil moisture - Soils
Uncontrolled terms:Artificial forest - Artificial shrubs - Artificial vegetation - Different effects - Environmental benefits - Loess Hilly region - Loess Plateau - Natural grass - Natural grassland - Natural vegetation  - Soil bulk density - Soil characteristics - Soil depth - Soil organic matters - Soil physical and chemical properties - Soil profiles - Soil property - Soil quality - Soil water content - Total nitrogen  - Total phosphorus - Vegetation restoration - Vegetation type
Classification code:821.3 Agricultural Methods - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 804.1 Organic Compounds - 801 Chemistry - 483.1 Soils and Soil Mechanics - 481.2 Geochemistry - 481.1 Geology - 461.2 Biological Materials and Tissue Engineering - 423 Non Mechanical Properties and Tests of Building Materials - 409 Civil Engineering, General - 402 Buildings and Towers
DOI:10.3969/j.issn.1002-6819.2012.15.013
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 3>

Accession number:20124415630970
Title:Spatio-temporal differentiation of land covers on annual scale and its response to climate and topography in arid and semi-arid region
Authors:Ren, Zhengchao (1); Zhu, Huazhong (3); Liu, Xiaoni (1)
Author affiliation:(1) College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecology System (Gansu Agricultural University), Lanzhou 730070, China; (2) College of Economics and Management, Gansu Agricultural University, Lanzhou 730070, China; (3) Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China
Corresponding author:Liu, X.(liuxiaoni4035@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:205-214
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reveal spatio-temporal differentiation of land covers and its response to climate and topography on annual scale in dry and semi-dry region of northwest China, international universal land cover classification schemes of IGBP, UMD, LAI-fPAR, NPP and PFT were integrated in the study with MODIS land cover datasets (MCD12Q1) and Chinese land cover classification schemes (TEFRS) taken as main data source and reference. Research results showed that: 1) Compared with other 4 land cover classification schemes, IGBP was more suitable to be applied into studying spatio-temporal differentiation of land covers on annual and regional scales. 2) From 2001 to 2009, farmland and rangeland represented increasing trend, but opposite to mash-water body and desert while forest showed increasing or decreasing trend and settlement with no change in 5 land cover classification schemes. Entire land cover classes were inter-transferred and its spatial traverse pattern was highly agreement with regional natural changes and human actions. 3) 6 land cover classes responding to natural condition was closely related with human actions and spatio-temporal distribution of sunlight, temperature, precipitation. The results can be a reference for regional or global LULC research.
Number of references:28
Main heading:Landforms
Controlled terms:Arid regions - Classification (of information) - Topography
Uncontrolled terms:Arid and semi-arid regions - Climatic changes - Data source - Human actions - Land cover - Land cover classification - Land cover datasets - Natural conditions - NorthWest China - Regional scale  - Research results - Spatio-temporal - Spatiotemporal distributions
Classification code:443 Meteorology - 444 Water Resources - 481.1 Geology - 716.1 Information Theory and Signal Processing - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.15.033
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 4>

Accession number:20124415630963
Title:Pollutant contents in biochar and their potential environmental risks for field application
Authors:Cang, Long (1); Zhu, Xiangdong (1); Wang, Yu (1); Xie, Zubin (2); Zhou, Dongmei (1)
Author affiliation:(1) Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; (2) State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
Corresponding author:Zhou, D.(dmzhou@issas.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:163-167
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:Biochar is widely used in carbon sequestration, pollution restoration, improvement of acid soils, and so on. However, there are few studies on examining the pollutant contents in biochar from different raw materials and preparation conditions, and the environmental risk of biochar application is unclear. In this study, the biochars with pine needles and wheat straw as raw materials were prepared under different conditions. The contents of heavy metals and polycyclic aromatic hydrocarbons (PAHs) in biochar were determined, and the environmental risk of biochar for field application was assessed. The results showed that different kinds of biochar contained a certain amount of heavy metals (0.301-128 mg/kg) and PAHs (1.48-5.48 mg/kg). The contents of heavy metals in the biochar from pine needles were higher than those from wheat straw, but opposite for the contents of PAHs. The Cu, Zn and Cd contents in the biochar by high temperature preparation were higher than those by low temperature preparation, and high temperature preparation reduced the PAHs contents in biochar. With high application rate of biochars, the PAHs in biochars tend to make soil PAHs contents reach moderate or severe pollution level. The environmental risk of heavy metals in biochars is little regardless of low or high application rate in field.
Number of references:24
Main heading:Heavy metals
Controlled terms:Environmental impact - Needles - Pollution - Polycyclic aromatic hydrocarbons - Soils
Uncontrolled terms:Acid soils - Application rates - Biochar - Carbon sequestration - Environmental risks - Field application - High temperature - In-field - Low temperature preparation - Pine needle  - Pollution level - Polycyclic aromatic hydrocarbons(PAHs) - Preparation conditions - Wheat straws
Classification code:454.2 Environmental Impact and Protection - 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography - 804.1 Organic Compounds - 819.6 Textile Mills, Machinery and Equipment
DOI:10.3969/j.issn.1002-6819.2012.15.026
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 5>

Accession number:20124415630979
Title:Optimization of process parameters for microwave-assisted extraction of pectin from wampee pulp
Authors:Zhang, Shuai (1); Dong, Ji (1); Huang, Zhiming (1); Liang, Qiaorong (1)
Author affiliation:(1) College of Chemistry and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China
Corresponding author:Zhang, S.(Chinazhsh@gmail.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:264-269
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For optimization of process for microwave-assisted extraction of pectin from wampee pulp, the effects of four factors including microwave power, extraction time, liquid-to-solid ratio and pH of extraction solution on pectin yield were researched using uniform design method. Model fitting and regression analysis of experimental data were made by SAS, and two significant factors which influence pectin yield, i.e. extraction time and liquid-to-solid ratio, were determined. The optimum process parameters of pectin extraction were obtained finally, of which the microwave powder was 600 W, extraction time was 8 min, liquid-to-solid ratio was 24:1 mg/L and pH value of extraction solution was 2.0. Under these conditions, the experimental value of pectin yield was 3.59%, which was in close agreement with the predictive value of 3.65%. The quality of pectin extracted under optimum conditions was basically conform to the national standard by determination and analysis of basic characteristics of pectin. The results can provide a reference for industrialization of extraction of pectin from wampee.
Number of references:25
Main heading:Extraction
Controlled terms:Liquids - Models - Optimization - pH effects - Regression analysis
Uncontrolled terms:Experimental values - Extraction solution - Extraction time - Microwave powder - Microwave power - Microwave-assisted extraction - Model fitting - National standard - Optimization of process parameters - Optimum conditions  - Pectin - pH value - Predictive values - Process parameters - Uniform design method - Wampee
Classification code:801.1 Chemistry, General - 802.3 Chemical Operations - 902.1 Engineering Graphics - 921.5 Optimization Techniques - 922.2 Mathematical Statistics - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.3969/j.issn.1002-6819.2012.15.042
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 6>

Accession number:20124415630944
Title:Effect of moisture content on mechanical properties of soybean seed under static pressure
Authors:Gao, Lianxing (1); Jiao, Weipeng (1); Yang, Dexu (1); Shao, Zhigang (1); Zhao, Xueguan (1); Liu, Dejun (1)
Author affiliation:(1) College of Engineering, Shenyang Agricultural University, Shenyang 110866, China
Corresponding author:Liu, D.(ldjldj@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:40-44
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to explore major mechanical properties soybean seed under different moisture content and disclose the damage mechanism of soybean seed during threshing and transportting, Shennong-12 soybean was seleted as test materials, major mechanical properties such as different forms of damage, elastic modulus, rupture strength and compression work for test index, the static compression test were carried out by means of universal bio-material tester with five levels of moisture content ranging from 6.84% to 21.37% and three kinds of stress direction. The relationship between moisture content and elastic modulus, moisture content and rupture strength, moisture content and compression work were researched. The results have important significance to well improvement structure and technology parameters of thresher and transporter of soybean seeds.
Number of references:25
Main heading:Moisture determination
Controlled terms:Agriculture - Compression testing - Elastic moduli - Mechanical properties - Moisture - Oilseeds - Seed - Strength of materials
Uncontrolled terms:Compression tests - Compression work - Damage mechanism - Rupture strength - Soybean seeds - Static compression - Static pressure - Stress directions - Technology parameters - Test materials
Classification code:944.2 Moisture Measurements - 943 Mechanical and Miscellaneous Measuring Instruments - 821.4 Agricultural Products - 951 Materials Science - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 801.4 Physical Chemistry
DOI:10.3969/j.issn.1002-6819.2012.15.007
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 7>

Accession number:20124415630952
Title:Characteristics of spatial-temporal variation of maize climate productivity during last 30 years in China
Authors:Zhong, Xinke (1); Liu, Luo (3); Xu, Xinliang (1); You, Songcai (4)
Author affiliation:(1) State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China; (3) College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; (4) Institute of Environment and Sustainable Development in Agriculture, Beijing 100081, China
Corresponding author:You, S.(yousc@ieda.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:94-101
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Based on daily observation data, growth stage data of maize and soil data, the GIS technology and AEZ model were used to simulate the average maize climate productivity and its change trend in China from 1981 to 2010. The results showed that the change trend of spring maize climate productivity was between -887 to 1689 kg/(hm²&middot5a); The areas with decreasing trend were mainly distributed in the west part of the Northeast China, the north part of Huang-Huai-Hai Plain and Loess Plateau Regions. The change trend of summer maize climate productivity was between -589 to 1768 kg/(hm²&middot5a); Except for the north part of Huang-Huai-Hai Plain, all other regions in China showed an increasing tendency. The photosynthesis and temperature productivity of spring maize and summer maize in the region where maize climate productivity had a decreasing tendency increased evidently from 1981 to 2010. Drying trend of climate was the main driving force of maize productivity fluctuations. The research can provide a reference for overall policy decision of maize production in China.
Number of references:30
Main heading:Climate change
Controlled terms:Climate models - Drought - Geologic models - Grain (agricultural product) - Productivity
Uncontrolled terms:Change trends - China - Driving forces - GIS technology - Growth stages - Loess Plateau - Maize - Maize production - Maize productivity - Northeast China  - Observation data - Policy decisions - Soil data - Spatial characteristics - Spatial temporals - Spring maize - Summer maize
Classification code:921 Mathematics - 913.1 Production Engineering - 821.4 Agricultural Products - 481.1 Geology - 451 Air Pollution - 444 Water Resources - 443 Meteorology
DOI:10.3969/j.issn.1002-6819.2012.15.015
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 8>

Accession number:20124415630955
Title:Construction of plant stereo visualization simulation system prototype - StereoPlants
Authors:Guo, Hao (1); Zhe, Dehai (1); Ge, Zhenyang (2); Ma, Qin (1); Liu, Kenan (2)
Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (2) Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650224, China
Corresponding author:Zhe, D.(zhudehai@263.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
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:With the development research of virtual plant visualization, simulation of plant communities and the complex plant tissues or microstructure has become a trend. Currently the display of visualization for plant simulation is just a two-dimensional display of rendering image. It is not visualized for cognizing the results of large plant communities or complex microstructure. Therefore, this paper proposed and implemented a system prototype to display plant simulation which accomplishes plant visualization stereo three-dimensional content from generating to stereo presentation. The software of this system is based on cross-platform FLTK graphical user interface library and OpenGL graphics library to complete plant simulation stereo visualization architecture, and supports to implant existing visualization simulation model based on OpenGL. The hardware system composes of computer and passive stereo projection system. In order to test the feasibility of this system, the existing visualization simulation of plant root was implanted into visualization framework. The integrated test results showed that this system prototype of stereo display plant simulation can vividly and immersed stereo display root visualization simulation. The prototype system makes the visualization of plant communities and the complex plant tissues or microstructure more intuitively and easily to be cognized.
Number of references:21
Main heading:Three dimensional computer graphics
Controlled terms:Application programming interfaces (API) - Computer hardware - Computer simulation - Computer software - Flow visualization - Graphical user interfaces - Histology - Microstructure - Tissue - Visualization
Uncontrolled terms:Complex microstructures - Complex plants - Cross-platform - Hardware system - Large plants - OpenGL graphics - Passive stereo - Plant communities - Plant roots - Plant simulation  - Plants - Prototype system - Simulation - Stereo displays - Stereo visualization - System prototype - Virtual plants - Visualization framework - Visualization simulations
Classification code:951 Materials Science - 933 Solid State Physics - 902.1 Engineering Graphics - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 722.2 Computer Peripheral Equipment - 722 Computer Systems and Equipment - 631.1 Fluid Flow, General - 461.2 Biological Materials and Tissue Engineering
DOI:10.3969/j.issn.1002-6819.2012.15.018
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 9>

Accession number:20124415630945
Title:Analysis of suitable irrigation water ratio of well to channel based on groundwater model
Authors:Dai, Fenggang (1); Cai, Huanjie (1); Liu, Xiaoming (3); Liu, Xuan (3); Liang, Hongwei (3)
Author affiliation:(1) Key Lab. of Agricultural Soil and Water Eng. in Arid and Semiarid Areas of Ministry of Education, Northwest Sci-Tech University of Agriculture And Forestry, Yangling 712100, China; (2) Key Laboratory of Water Resources Sustainable Use and development of Hebei, Shijiazhuang University of Economics, Shijiazhuang 050031, China; (3) Jinghuiqu Administration of Shaanxi Province, Sanyuan 713800, China
Corresponding author:Cai, H.(caihj@nwsuaf.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:45-51
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to obtain the suitable irrigation water ratio of well and channel to determine scientific and reasonable agricultural water saving scheme in the Jinghui Canal Irrigation District, the ArcGIS and PMWIN software were integrated together to establish the groundwater distribution simulation model of the irrigation area. The EVT evapotranspiration subroutine of PMWIN was rewritten with the VB programming language so that it can simulate the nonlinear evaporation. The simulation accuracy of evaporation was greatly improved. According to the actual situation of agricultural irrigation, 10 kinds of water-saving irrigation simulation scenarios were set up to simulate the change of groundwater depth. Then the suitable irrigation water ratio of well to channel was obtained through the groundwater equilibrium analysis. The results show that: 1) It can keep a balance between groundwater supply and drainage when the irrigation water ratio of well to channel is at 0.35-0.55 with irrigation intake water amount of 0.37-0.41 billion m3 from canal head; 2) It is possible to keep a balance between groundwater supply and drainage when the irrigation water ratio of well to channel is at 0.5-0.7 with irrigation intake water amount of 0.15-0.2 billion m3 from canal head; 3) The current well and canal irrigation ratio of 0.9-1.2 has led to excessive extraction of groundwater. It is recommended that the ratio of well to canal irrigation should be controlled at 0.5-0.7 through agricultural water-saving efforts, increasing financial subsidies to water price and artificial regulation of groundwater storage, so as to achieve the efficient and sustainable use of water resources in the irrigation district.
Number of references:31
Main heading:Irrigation
Controlled terms:Computer simulation - Evaporation - Groundwater - Groundwater resources - Hydraulic structures - Models - Phase transitions - Water conservation - Water supply
Uncontrolled terms:Agricultural irrigation - Agricultural water - ArcGIS - Canal irrigation - Equilibrium analysis - Financial subsidies - Groundwater models - Groundwater storage - Groundwater supply - Irrigation area  - Irrigation districts - Irrigation waters - PMWIN - Simulation accuracy - Simulation model - Sustainable use - Water amount - Water prices - Water-saving - Water-saving irrigation
Classification code:821.3 Agricultural Methods - 802.3 Chemical Operations - 801.4 Physical Chemistry - 723.5 Computer Applications - 902.1 Engineering Graphics - 611 Hydroelectric and Tidal Power Plants - 444.2 Groundwater - 444 Water Resources - 441 Dams and Reservoirs; Hydro Development - 446.1 Water Supply Systems
DOI:10.3969/j.issn.1002-6819.2012.15.008
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 10>

Accession number:20124415630957
Title:Estimating chlorophyll density of cotton canopy by hyperspectral reflectance
Authors:Wang, Qiang (1); Yi, Qiuxiang (1); Bao, Anming (1); Luo, Yi (1); Zhao, Jin (1)
Author affiliation:(1) Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences, Xinjiang URUMQI 830011, China; (2) Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Bao, A.(baoam@ms.xjb.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:125-132
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to further improve the estimation accuracy of cotton chlorophyll density by hyperspectral reflectance, canopy hyperspectral reflectance and chlorophyll density were recorded at four different growth stages of cotton in a field experiment. All two-band combinations (350 to 1100 nm) in the ratio type of vegetation index (RVI) and the normalized difference type of vegetation index (NDVI) were performed on raw spectral reflectance and the first derivative reflectance, and then the correlation between all two-band combinations and cholorophyll density were determined. The coefficients (r) were presented in matrix plots. Basing on the results of correlation analysis, the estimation models of chlorophyll density were established using linear regression and multiply stepwise regression methods, and then the predictive power of four predictors were analyzed, i.e. single narrow band raw reflectance and the first derivative reflectance, the established vegetation indices for chlorophyll density estimation, and the optimal band combination vegetation indices. Three main conclusions were obtained: 1) The performance of first derivative reflectance was evidently better than raw reflectance; 2) The precision and stability of estimation models based on vegetation indices were normally much higher than models based on single band or multiply bands; 3) Among four types independent variables, DR<inf>756</inf> was the best candidate for single-band models, ratio index DR<inf>635</inf>/DR<inf>643</inf> and normalized difference index (DR<inf>1055</inf>-DR<inf>684</inf>) / (DR<inf>1055</inf> DR<inf>684</inf>) were the best among all band combination indices. In conclusion, the model based on DR<inf>635</inf>/DR<inf>643</inf> obtained the most satisfied results for the estimation of chlorophyll density, and the correlation coefficient between estimated and measured chlorophyll density reached 0.821. The study will provide a reference for the better application of hyperspectral reflectance in chlorophyll density derivation.
Number of references:35
Main heading:Reflection
Controlled terms:Chlorophyll - Cotton - Estimation - Models - Vegetation
Uncontrolled terms:Correlation analysis - Correlation coefficient - Density estimation - Estimation models - Field experiment - First derivative - Growth stages - Hyperspectral reflectance - Independent variables - Model-based OPC  - Narrow bands - Normalized difference indices - Normalized differences - Predictive power - Single band - Spectral reflectances - Stepwise regression method - Vegetation index
Classification code:711 Electromagnetic Waves - 804.1 Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.4 Agricultural Products - 902.1 Engineering Graphics - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2012.15.020
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 11>

Accession number:20124415630978
Title:Optimization of high temperature short time air puffing technology of adlay
Authors:Liu, Xiaojuan (1); Gong, Li (2); Mao, Xin (1); Zhao, Lichao (1); Zhou, Aimei (1); Liu, Xin (1)
Author affiliation:(1) College of Food Science, South China Agricultural University, Guangzhou 510642, China; (2) Guangdong Agricultural Machinery Research Institute, Guangzhou 510642, China
Corresponding author:Liu, X.(liuxj@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:258-263
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to optimize the high temperature short time air puffing technology of adlay, the experiments were conducted by response surface methodology to investigate the effects of four influencing parameters of pre-gelatinization time, puffing temperature, puffing time and water content on expansion rate and yellow-blue index. In vitro digestion of starch and protein, and cell structure of adlay before and after puffing were also analyzed. The results showed that the importance of affecting factors were in the order of the puffing time, water content, puffing temperature and pre-gelatinization time. The optimum conditions were that pre-gelatinization time of 29.9 min, puffing temperature of 251&deg;C, puffing time of 20.0 s and water content of 6%. After puffing, the external digestion of starch and protein of adlay increased significantly (P &lt; 0.05). Cell structure of adlay showed honeycomb structure, and there were many big cavities. The research can provide a method for shortening cooking time and improving nutrient digestion and absorption rate of adlay, which can meet the requirements of industrial production.
Number of references:21
Main heading:Optimization
Controlled terms:Agricultural products - Gelation - Industrial research - Proteins - Starch - Technology
Uncontrolled terms:Absorption rates - Adlay - Affecting factors - Cell structure - Cooking time - Expansion rate - High temperature - In-vitro - Industrial production - Influencing parameters  - Nutrient digestion - Optimum conditions - Response surface methodology
Classification code:802.3 Chemical Operations - 804.1 Organic Compounds - 821.4 Agricultural Products - 901 Engineering Profession - 901.3 Engineering Research - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.15.041
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 12>

Accession number:20124415630981
Title:Kinetics of quality change for eggs during storage
Authors:Yu, Bin (1); Wang, Xibo (2)
Author affiliation:(1) Department of Life Science, Zaozhuang University, Zaozhuang 277160, China; (2) College of Food Science, Northeast Agriculture University, Harbin 150030, China
Corresponding author:Wang, X.(wangxibo@yahoo.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:276-280
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 relationship between quality changes and storage period of hen eggs was investigated, and kinetics method was adopted to establish the prediction model of storage. Results showed that the egg weight and yolk index decreased and the room height of egg increased with increasing storage time. The high regression coefficients indicated the acceptability of the first order reaction and Arrhenius model for predicting the changes of eggs weight, yolk index and air room height. Kinetics reaction rate constants suggested that the egg quality decreased with increasing storage temperature. Relative error between predicted shelf life calculated by the prediction model and observed value was within 10%. The change of egg weight, yolk index, air room height and storage period of eggs can be predicted at the storage temperature from 5&deg;C to 35&deg;C based on the prediction model of storage, which can provide a reference for the storage and sale of hen eggs.
Number of references:24
Main heading:Kinetics
Controlled terms:Energy storage - Enzyme kinetics - Image quality - Mathematical models - Models - Rate constants
Uncontrolled terms:Arrhenius models - Egg quality - First order reactions - Hen egg - Kinetics method - Prediction model - Quality change - Regression coefficient - Relative errors - Shelf life  - Storage periods - Storage temperatures - Storage time
Classification code:931 Classical Physics; Quantum Theory; Relativity - 921 Mathematics - 902.1 Engineering Graphics - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 741 Light, Optics and Optical Devices - 702 Electric Batteries and Fuel Cells
DOI:10.3969/j.issn.1002-6819.2012.15.044
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 13>

Accession number:20124415630971
Title:Working parameters optimization of ultrasonic cleaning machine for jujube
Authors:Ma, Shaohui (1); Zhang, Xuejun (2)
Author affiliation:(1) College of Mechanic and Electrical Engineering, Tarim University, Alaer 843300, China; (2) College of Machinery and Traffic, Xinjiang Agricultural University, Urumqi 830052, China
Corresponding author:Zhang, X.(zhxjau@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:215-220
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 improve the cleaning effect of the dried jujube during cleaning process, the jujube cleaning machine was designed and manufactured by using ultrasonic as power. On the basis of pretests, the parameters scope of the cleaning machine was determined. Through orthogonal test of ultrasonic cleaning to dried jujube, the range analysis and square analysis were carried out on the test data. Under the experiment condition of power 550 w, temperature 60&deg;C and cleaning time 4 min, the results showed the best cleaning effect with cleaning rate of above 96.2%, breakage rate of 0.8%. The experiment results can provide a scientific and technical basis for jujube dried enterprises.
Number of references:17
Main heading:Cleaning
Controlled terms:Automobile manufacture - Experiments - Optimization - Ultrasonic cleaning - Ultrasonic waves - Ultrasonics
Uncontrolled terms:Cleaning effect - Cleaning machine - Cleaning process - Cleaning rate - Experiment condition - Jujube - Machine - Orthogonal test - Range analysis - Test data  - Working parameters
Classification code:539 Metals Corrosion and Protection; Metal Plating - 662.1 Automobiles - 753.1 Ultrasonic Waves - 802.3 Chemical Operations - 901.3 Engineering Research - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.15.034
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 14>

Accession number:20124415630951
Title:Properties and application of composite water retaining agent
Authors:Zhang, Lu (1); Sun, Xiangyang (1); Tian, Yun (1); Gong, Xiaoqiang (1)
Author affiliation:(1) College of Soil and Water Conservation, Beijing Forestry University, Key Laboratory of Soil and Water Conservation and Desertification Combation, Beijing 100083, China
Corresponding author:Sun, X.(sunxy@bjfu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
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:In order to promote the reasonable application of self-made composite water retaining agent on protected substrate cultivation for water-saving, difference of the properties of water absorption and retention and germination percentage between composite water retaining agent and the control (MP3005 KM) were compared in this paper. With &beta;-cyclodextrin, sodium carboxymethyl cellulose, soluble starch, bamboo charcoal powder and pyrolytic corncob as raw materials, composite water retaining agents were prepared by using water bath heating. pH values, swelling degrees, water absorption rates, dehydrating rates, frequent absorbency and germination tests were analyzed and compared with analysis of variance (ANOVA) and multiple comparison tests. The results showed that four kinds of self-made composite water retaining agents all had better properties on the water absorption and retention than the control which the optimal composite water retaining agent was the &beta;-cyclodextrin sodium carboxymenthyl cellulose soluble starch pyrolytic corncob. The &beta;-cyclodextrin sodium carboxymenthyl cellulose soluble starch pyrolytic corncob had higher swelling degree (183.98 mL/g), higher water absorption rate, lower water dehydrating rate and its germination index (GI) was nearly 7 times higher than the control. The study can provide a theoretical reference for development, production and application of water retaining agent in China.
Number of references:33
Main heading:Water absorption
Controlled terms:Applications - Cellulose - Charcoal - Cultivation - pH - Sodium - Starch - Swelling - Water conservation
Uncontrolled terms:Bamboo charcoal - Germination index - Germination test - Multiple comparison test - pH value - Sodium carboxymethyl cellulose - Soluble starch - Swelling degree - Water absorbency - Water baths  - Water-retaining agents - Water-saving
Classification code:951 Materials Science - 821.3 Agricultural Methods - 815.1.1 Organic Polymers - 804.1 Organic Compounds - 802.3 Chemical Operations - 801.1 Chemistry, General - 549.1 Alkali Metals - 524 Solid Fuels - 451.2 Air Pollution Control - 444 Water Resources - 421 Strength of Building Materials; Mechanical Properties
DOI:10.3969/j.issn.1002-6819.2012.15.014
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 15>

Accession number:20124415630941
Title:Calibration method for EUP diesel engine based on BP neural network
Authors:Feng, Guosheng (1); Jia, Sumei (1); Zhou, Wei (2)
Author affiliation:(1) Hebei Province Laboratory of Traffic Safety and Control, Shijiazhuang Tiedao University, Shijiazhuang 050043, China; (2) School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China
Corresponding author:Feng, G.(fgs2005@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:21-26
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 seek the better match between ECU (electronic control unit) and engine, the calibration test bench of HC4132UPS was developed based on MPC555. The sampling data was obtained by orthogonal experiment in test bench calibration. Using BP neural network, the mathematical model between control parameters and steady-state performance was built. The linear regression between the control parameters and power, fuel consumption and emissions was processed. The multiple correlation coefficient of output response was large than 0.94. The results showed that the network had good generalization ability and forecast performance. Using the neural network mathematical model as the constraints and objective function of performance optimization, the calibration was optimized by genetic algorithm. The experiment results show that this system can complete the collection of calibration data, and the calibration method based on neural network model and genetic algorithm is efficient and feasible.
Number of references:28
Main heading:Calibration
Controlled terms:Diesel engines - Experiments - Genetic algorithms - Mathematical models - Neural networks - Optimization
Uncontrolled terms:BP neural networks - Calibration data - Calibration method - Calibration tests - Control parameters - Electronic control units - Electronic unit pump - Generalization ability - Multiple correlation coefficients - Neural network model  - Objective functions - Offline - Orthogonal experiment - Output response - Performance optimizations - Sampling data - Steady state performance - Test benches
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921.5 Optimization Techniques - 921 Mathematics - 901.3 Engineering Research - 723.4 Artificial Intelligence - 612.2 Diesel Engines
DOI:10.3969/j.issn.1002-6819.2012.15.004
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 16>

Accession number:20124415630953
Title:Discrimination of tomato plant with different levels of mechanical damage by electronic nose
Authors:Cheng, Shaoming (1); Wang, Jun (1); Wang, Yongwei (1); Wei, Zhenbo (1)
Author affiliation:(1) College of Bio-Systems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
Corresponding author:Wang, J.(jwang@zju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:102-106
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The value of E-nose response signals differed with different levels mechanical (0 pricks, 30 pricks, 60 pricks and 90 pricks) damaged tomato plants, indicating that the emission of volatiles by tomato plants changes in response to different degrees of damage. The tomato plants with different levels mechanical damages were classified through principal component analysis (PCA) and linear discrimination analysis (LDA). The result showed that the electronic nose could distinguish different damaged tomato plant by LDA. However, samples by PCA were overlapped. Stepwise discriminant analysis (SDA) and back-propagation neural network (BPNN) were applied to evaluate the data. The average correction ratios of testing set of SDA and BPNN were 84.4% and 93.8% respectively. The results indicate that it is possible to classify different degrees of damaged tomato plants using e-nose signals.
Number of references:21
Main heading:Fruits
Controlled terms:Discriminant analysis - Neural networks - Principal component analysis
Uncontrolled terms:Back-propagation neural networks - Electronic NOSE - Linear discrimination analysis - Mechanical damages - Plants - Response signal - Stepwise discriminant analysis - Tomato - Tomato plants
Classification code:723.4 Artificial Intelligence - 821.4 Agricultural Products - 922 Statistical Methods - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2012.15.016
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 17>

Accession number:20124415630960
Title:Performances of PP wood-plastic composites with different processing methods
Authors:He, Chunxia (1); Hou, Renluan (1); Xue, Jiao (1); Zhu, Dongjun (1)
Author affiliation:(1) College of Engineering, Nanjing Agricultural University/Key Laboratory of Intelligence Agricultural Equipment, Nanjing 210031, Jiangsu Province, China
Corresponding author:He, C.(chunxiahe@tom.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:145-150
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to utilize agricultural and forestry wastes and environmental protection, the PP wood-plastic composites were prepared filled with rice straw powder, rice husk powder, wood powder and bamboo powder and mixing powder with two kinds of processing methods (mixing compression molding and layers compression molding). The mechanical properties, water absorption and moisture absorption performance of the PP wood-plastic composites were investigated. The tensile sections of the composites were observed by stereo microscope. The results showed that the mechanical properties, water absorption and moisture absorption performance of the PP composites with mixing compression molding excelled that with layers compression molding, and the filler well-distributed in PP matrix and two phases had good interface combination. The PP composites filled with straw powder had good mechanical properties, and bamboo powder with PP composites had poor performance, and its mechanical properties was low, and mixing compression molding had an important role to improved water absorption and moisture absorption performance of the PP wood-plastic composites.
Number of references:22
Main heading:Compression molding
Controlled terms:Agricultural wastes - Bamboo - Composite materials - Mechanical properties - Mixing - Wood products
Uncontrolled terms:Mixing powder - Moisture absorption - Poor performance - PP films - PP matrix - Processing method - Rice husk - Rice straws - Stereo-microscopes - Wood plastic composite  - Wood powder
Classification code:951 Materials Science - 821.5 Agricultural Wastes - 821.4 Agricultural Products - 816.1 Processing of Plastics and Other Polymers - 811 Cellulose, Paper and Wood Products - 802.3 Chemical Operations - 415 Metals, Plastics, Wood and Other Structural Materials
DOI:10.3969/j.issn.1002-6819.2012.15.023
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 18>

Accession number:20124415630974
Title:RFID-based solution for improving vegetable producing area traceability precision and its application
Authors:Qian, Jianping (1); Yang, Xinting (1); Zhang, Baoyan (3); Wu, Xiaoming (1); Xue, Bin (4)
Author affiliation:(1) National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China; (2) Department of Information, Beijing Forestry University, Beijing 100083, China; (3) Tianjin Agricultural Information Center, Tianjin 300201, China; (4) Tianjin Pollution-Free Agri-Products (Crop Planting) Management Center, Tianjin 300201, China
Corresponding author:Yang, X.(yangxt@nercita.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:234-239
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:Specialized farmer cooperatives provided organization support for implementing the traceability to essential production management unit. In this paper, 14 digits were adopted for encoding collection bins and ultra high frequency RFID was to identify the bins. The relationships of harvest information and production information, package information and harvest information were established by developing portable record-keeping system for vegetable harvest and upgrading vegetable production management system. Based on the identification and information recording, a solution was designed to improve traceability precision on the mode of specialized farmer cooperatives. The solution was applied in the traceability management of one specialized farmer cooperatives in Tianjin. The results showed that the solution could improve the traceability precision. Comparing with the existed traceability solution, the solution had obvious advantages of basic traceability unit, recall cost and check cost, but needed additional investment for equipments and staff.
Number of references:26
Main heading:Information management
Controlled terms:Agricultural products - Bins - Harvesting - Information systems - Production control - Radio frequency identification (RFID) - Vegetables
Uncontrolled terms:Information recording - Producing area - Production management - Recall costs - Record-keeping systems - Tianjin - Traceability - Ultra-high frequency - Vegetable productions
Classification code:694.4 Storage - 731.1 Control Systems - 821.3 Agricultural Methods - 821.4 Agricultural Products - 903.2 Information Dissemination
DOI:10.3969/j.issn.1002-6819.2012.15.037
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 19>

Accession number:20124415630965
Title:Performance of anaerobic co-digestion of corn straw and algae biomass from lake Chaohu
Authors:Peng, Shuchuan (1); Hou, Chenghu (1); Wang, Jin (1); Chen, Tianhu (1); Liu, Xiaomeng (2); Yue, Zhengbo (1)
Author affiliation:(1) School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; (2) Anhui Academy of Environmental Science Research, Hefei 230071, China
Corresponding author:Peng, S.(scpeng@vip.sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:173-178
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To enhance the resourcelization of algae biomass, the corn stover was used as the co-digestion substrate for biogas productioin. Results showed that the biogas yield was improved significantly in the co-digestion process compared to that using only corn stalk or algae biomass. When the ratio of corn stalk, algae biomass and sludge was 2:8:1, a maximum value of 687.3 mL/g VS with methane content of 63.3% was achieved. Simultaneously in the aqueous phase, the concentration of phosphate, total carbon and total organic carbon were the highest. Results indicated that digestion efficiency of algae biomass was promoted significantly in this case.
Number of references:30
Main heading:Anaerobic digestion
Controlled terms:Algae - Biogas - Biomass - Fermentation - Methanation - Methane - Straw
Uncontrolled terms:Anaerobic co-digestion - Aqueous phase - Blue green algae - Codigestion - Corn stalk - Corn stover - Corn straws - Digestion efficiency - Lake Chaohu - Maximum values  - Methane content - Total carbon - Total Organic Carbon
Classification code:461.2 Biological Materials and Tissue Engineering - 522 Gas Fuels - 802.2 Chemical Reactions - 821.5 Agricultural Wastes
DOI:10.3969/j.issn.1002-6819.2012.15.028
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 20>

Accession number:20124415630940
Title:Design and experiment of livestock auto weighing system
Authors:Hua, Limin (1); Zhou, Jianwei (1); Yu, Yingwen (3); Yang, Siwei (1); Wang, Qiaolin (1); Zhao, Taotao (1)
Author affiliation:(1) Grassland Science College of Gansu Agricultural University, Lanzhou 730070, China; (2) Key Laboratory of Grassland Ecosystem (Gansu Agricultural University), Lanzhou 730070, China; (3) College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
Corresponding author:Hua, L.(hualm@gsau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:15-20
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 save time and labor and reduce risk of injury to the livestock or to the people while measuring changes in the body weight monitoring of grazing livestock, a new livestock weighing system was invented and evaluated in this paper, which involved an E-tag fitting to each animal, and using a RFID reader, an electrical scale and special software. The result showed that the new livestock weighing system can save more than 70 percent of labor and 50 percent of the weighing time compared to the traditional way, and avoid the dangers associated with handling large livestock. By using of the E-tag based on the RFID technology, the monitoring of body weight and body condition for individual livestock is now possible.
Number of references:26
Main heading:Agriculture
Controlled terms:Animals - Anthropometry - Automation - Design - Equipment - Radio frequency identification (RFID) - Scales (weighing instruments) - Weighing
Uncontrolled terms:Body condition - Body weight - Livestock weighing - RFID readers - RFID Technology - Weighing systems
Classification code:901 Engineering Profession - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 732 Control Devices - 943.3 Special Purpose Instruments - 731.1 Control Systems - 461.3 Biomechanics, Bionics and Biomimetics - 408 Structural Design - 731 Automatic Control Principles and Applications
DOI:10.3969/j.issn.1002-6819.2012.15.003
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 21>

Accession number:20124415630980
Title:Preparation process of hydrophobic micro-porous waxy corn starch
Authors:Tang, Hongbo (1); Wang, Xiaoyu (1); Li, Yanping (1); Dong, Siqing (1)
Author affiliation:(1) Science School, Shenyang University of Technology, Shenyang 110780, China
Corresponding author:Tang, H.(tanghb6666@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:270-275
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 hydrophobic modification of micro-porous waxy corn starch was carried out to enhance its oil absorption rate and improve its application quality by using the wet method. Some factors affecting the oil absorption rate of hydrophobic micro-porous waxy corn starch were: reaction temperature, reaction time, pH value and amount of hydrophobic agent. The microstructure and thermal property were characterized and measured by infrared spectrogram, thermogravimetric analyzer and differential scanning calorimetry, respectively. The results indicated that the oil absorption rate of hydrophobic micro-porous waxy corn starch increased by 43.0%, compared with that of micro-porous waxy corn starch. The optimum process conditions for preparing hydrophobic micro-porous waxy corn starch were as follows: reaction temperature 50&deg;C, reaction time 4 h, pH value 9.0. The peak onset temperature, peak temperature, peak end temperature, enthalpy change of DSC curve of hydrophobic micro-porous waxy corn starch decreased, and the thermal stability of hydrophobic micro-porous waxy corn starch decreased, compared with those of micro-porous waxy corn starch. The research results can provide a reference for the commercial applications of the micro-porous waxy corn starch.
Number of references:27
Main heading:Starch
Controlled terms:Differential scanning calorimetry - Hydrophobicity - Optimization - pH
Uncontrolled terms:Application quality - Commercial applications - DSC curves - Enthalpy change - Hexamethyldisilazane - Hydrophobic agents - Hydrophobic modification - Modification - Oil absorption - Onset temperature  - Optimum process conditions - Peak temperatures - pH value - Preparation process - Reaction temperature - Research results - Spectrograms - Thermogravimetric analyzers - Waxy corn starch - Wet method
Classification code:801 Chemistry - 801.1 Chemistry, General - 804.1 Organic Compounds - 921.5 Optimization Techniques - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.3969/j.issn.1002-6819.2012.15.043
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 22>

Accession number:20124415630939
Title:Configuration analysis and structure parameter design of six-leg agricultural robot with parallel-leg mechanisms
Authors:Rong, Yu (1); Jin, Zhenlin (1); Cui, Bingyan (3)
Author affiliation:(1) College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China; (2) College of Mechanical and Electronic Engineering, Hebei Normal University Science and Technology, Qinhuangdao 066004, China; (3) College of Mechanical Engineering, Hebei United University, Tangshan 063009, China
Corresponding author:Rong, Y.(lixiangcg@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:9-14
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To apply the six-legged robot in the field of agriculture, the parallel mechanism was used in the mechanical leg of the six-legged robot. The six-legged walking robot could be used for transportation, cultivation, harvesting of agricultural fields in the mountains, woodlands, hills. The configuration of the six-legged robot was analyzed, and the 2-UPS UP parallel manipulator was selected as the initial configuration of the mechanical leg. The rotational decoupled optimization of 2-UPS UP parallel manipulator was done with screw theory, a rotational decoupled UPR UPS UP parallel manipulator was proposed. Based on configuration analysis, kinematics position equations were formulated. Kinematics model of the parallel manipulator was discussed as a key. The inverse position analysis and velocity mapping equations were presented. The workspace of UPR UPS UP parallel manipulator was analyzed. Three- dimensional graphic of workspace was drawn. By analyzing the impact of the design parameters on the work space, a set of structural parameters with good performance were selected. These studies laid the theoretical foundation for further study of the six-legged agricultural robot.
Number of references:26
Main heading:Cultivation
Controlled terms:Agriculture - Kinematics - Machine design - Manipulators - Mechanisms - Robots
Uncontrolled terms:Agricultural fields - Agricultural robot - Configuration analysis - Design parameters - Initial configuration - Kinematics models - Leg mechanism - Parallel manipulators - Parallel mechanisms - Position analysis  - Position equations - Screw theory - Six-legged robots - Six-legged walking - Structural parameter - Structure parameter - Theoretical foundations - Velocity mapping - Workspace
Classification code:601 Mechanical Design - 601.3 Mechanisms - 731.5 Robotics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 931.1 Mechanics
DOI:10.3969/j.issn.1002-6819.2012.15.002
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 23>

Accession number:20124415630962
Title:Pilot-scale test for biofilm rapid formation in biofilter of recirculating mariculture system
Authors:Zhang, Zheng (1); Wang, Yingeng (1); Cao, Lei (1); Wang, Lan (1); Qu, Jiangbo (2); Liao, Meijie (1); Li, Bin (1)
Author affiliation:(1) Yellow Sea Fisheries Research Institute, Chinese Academic of Fishery Sciences, Qingdao 266071, China; (2) Tianyuan Aquatic Limited Corporation of Yantai Development Zone, Qingdao 264006, China
Corresponding author:Wang, Y.(wangyg@ysfri.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:157-162
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:Biofilm formation is a time-consuming process with more than 30 days in recirculating aquaculture system. In order to improve its efficiency, a pilot scale test was performed in a seawater recirculating aquaculture farm. There were 4 shunt-wound biofilters with runway-like, two-stage structure in each one and total capacity of 800 m³. The biofilm carrier was needle-like polyethylene. Before the test beginning, high concentrated bacterial suspension and "clay zeolite powder mixture (filtered by 200 mesh screen and mixed at w/w 4:1)" suspend solution were prepared. And then, about 200 m³ wastewater flowed into the biofilter with 100 m³ in each stage. After that, bacterial and "clay zeolite powder mixture" suspension were poured into the biofilters with respective concentration of 10³ cfu/mL and 5 g/L. Stable biofilm can be observed on the surface of biofilm carrier after 8 days incubation with constant aeration but without water changing in the biofilters. The concentration of ammonia, nitrate, nitrite and COD (chemical oxygen demand) were measured once a day from the 11th day to the 15th day after the system running for 2 days since the 9th day. Their average removal rates reached to 52.04%, 17.24%, 26.82% and 62.94%, respectively. Comparing to traditional biofilm forming method, the method in this paper can advance the time of biofilm formation more than 20 days. Beyond this, the method is feasible to demonstrate and popularize in recirculating mariculture farm.
Number of references:26
Main heading:Biofilms
Controlled terms:Aquaculture - Biofilters - Chemical oxygen demand - Marine biology - Seawater - Suspensions (fluids) - Wastewater treatment - Water aeration
Uncontrolled terms:Biofilm carriers - Biofilm formation - Its efficiencies - Mesh screen - Needle-like - Pilot scale test - Recirculating aquaculture system - Removal rate - Zeolite powder
Classification code:445.1 Water Treatment Techniques - 452 Municipal and Industrial Wastes; Waste Treatment and Disposal - 452.4 Industrial Wastes Treatment and Disposal - 462.5 Biomaterials (including synthetics) - 471 Marine Science and Oceanography - 804 Chemical Products Generally
DOI:10.3969/j.issn.1002-6819.2012.15.025
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 24>

Accession number:20124415630973
Title:Development on mobile traceability system of feeding process of pigs and quality safety of its meat products based on 3G technology
Authors:Xiong, Benhai (1); Luo, Qingyao (1); Yang, Liang (1); Pan, Jiayi (1)
Author affiliation:(1) Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (2) State Key Laboratory of Animal Nutrition, Chinese Feedstuff Database Information Center, Beijing 100193, China
Corresponding author:Xiong, B.(Bhxiong@iascaas.net.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:228-233
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In view of existed not flexibility and low efficiency in establishing feeding file of large-scale farms or farmer farms of pigs, by adopting intelligent PDA or mobile phone as application platform, combining with .Net 2005 language and SQL Server 2005 CE database as well as TD-SCDMA wireless wide band communication linking Internet as data transmission method, this study suggested data criterions on feeding process information collection of pigs, and developed a mobile PDA or phone system to track swine feeding process data, such as operators and main inputs, and to trace pork quality safety. The running of the system shows that it realized all kinds of data collecting and wireless submission including ear tag wearing and movements, immunity events, feeds and veterinary drugs used as well as casual inspection data, and also achieved remote data maintaining for pig's feeding files and deepness inquiry to pork quality. The system not only makes up a deficiency from table data recording system for feeding file setting of a large-scale swine farm, but also is a kind of effective solution for farmer farm to set up swine feeding files. Furthermore, the system is a kind of mobile and convenient supervising tool to service official veterinarian to carry out their work. Finally, with the TD-SCDMA technology prevalence and communication fee decrease, the system will take part in a important role in constructing Chinese pork quality safety traceability system.
Number of references:27
Main heading:Cellular telephone systems
Controlled terms:Agriculture - Code division multiple access - Communication - Feeding - Information systems - Mammals - Meats - Personal digital assistants
Uncontrolled terms:3G technology - Application platforms - Data collecting - Data recording systems - Effective solution - Livestock - Meat products - Phone systems - Process data - Process information  - Quality safety - Quality traceabilitys - Remote data - SQL Server 2005 - Swine farm - TD-SCDMA - Traceability systems - Veterinary drugs - Wide-band communications
Classification code:903.2 Information Dissemination - 822.3 Food Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 722 Computer Systems and Equipment - 716.3 Radio Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 691.2 Materials Handling Methods
DOI:10.3969/j.issn.1002-6819.2012.15.036
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 25>

Accession number:20124415630938
Title:Coupling relationship analysis of land use and regional economy in Guizhou province
Authors:Han, Dejun (1); Zhu, Daolin (1)
Author affiliation:(1) College of Resource and Environment, China Agricultural University, Beijing 100193, China; (2) College of Resource and Environment Management, Guizhou University of Finance and Economics, Guiyang 550004, China
Corresponding author:Zhu, D.(dlzhu@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:1-8
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to solve the prominent contradictions between regional economic development and eco-environmental conservation in ecologically fragile region after the National Main Functional Regions Plan, taking Guizhou province as an example, a coupling relationship between land use mechanism and regional economic development was studied in this paper. And some advices for land use mechanism in different areas were given. The main innovative points in this paper can be summarized as follows: Firstly, factor analysis method was adopted to construct a coupling relationship model by selecting an evaluation index system including 28 indexes that represent the dynamic mechanism of land use and economic development. Secondly, those indexes were classified and the common factors were extracted. Finally, the coupling degree between land use mechanism and regional economic in the study area was evaluated and the driving factors of land use that blocking economic development and the reasons for the differences among the coupling degrees in space partition were analyzed. It is concluded that a strong coupling relationship between land use and regional economic is found in Guizhou province, and the different aspects of regional economic development are derived by different land-use factors while the economic factors also have an impact on land-use mechanism.
Number of references:30
Main heading:Economic analysis
Controlled terms:Conservation - Economics - Land use - Regional planning - Zoning
Uncontrolled terms:Common factors - Coupling degree - Driving factors - Dynamic mechanism - Ecologically fragile region - Economic development - Economic factors - Evaluation index system - Factor analysis method - Guizhou Province  - Regional economy - Relationship analysis - Relationship model - Space partition - Strong coupling - Study areas
Classification code:403 Urban and Regional Planning and Development - 403.2 Regional Planning and Development - 454 Environmental Engineering - 911.2 Industrial Economics
DOI:10.3969/j.issn.1002-6819.2012.15.001
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 26>

Accession number:20124415630959
Title:Predicting system of Chilean jack mackerel fishing grounds based on remote sensing data
Authors:Zhang, Heng (1); Cui, Xuesen (1); Fan, Wei (1)
Author affiliation:(1) Key Laboratory of Fisheries Resources Remote Sensing and Information Technology Resources, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
Corresponding author:Cui, X.(cuixuesen@eastfishery.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
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:Based on the yearly catch data (2001-2009) of Chinese fishery and inversion SST by satellite remote sensing in the Southeast Pacific Ocean, the predicting system on fishing grounds founded was developed based on the Bayesian probability theory. The system adopts the client/service mode; while the database runs under the SQL Server 2000 data management system combined the interactive controls GIS technology. The system was also verified on its precision by using historical catch data. The results showed that the prediction accuracy of fishing ground and non-fishing ground were 72.6% and 57.5%, respectively, while the average predict rate of accuracy was above 65%. The prediction accuracy of fishing ground in peak period of fishing was 3%-22% higher than which in fishing later period, but the prediction accuracy of non-fishing ground was 4%-11% lower than which in later period of fishing. Hence, the system has important advising significance in predicting fishing ground and fishing activity on the Chilean jack mackerel in the South Pacific Ocean. But in the actual predicting process, it needs to revise the forecasting location of fishing ground integrated other environmental factors, such as chlorophyll a, sea level height, ocean current.
Number of references:22
Main heading:Fisheries
Controlled terms:Chlorophyll - Forecasting - Information management - Ocean currents - Remote sensing - Sea level
Uncontrolled terms:Bayesian probabilities - Bayesian probability theory - Chilean jack mackerel - Chlorophyll a - Data management system - Environmental factors - Fishing activities - Fishing ground - GIS technology - Interactive control  - Pacific ocean - Peak period - Prediction accuracy - Remote sensing data - Satellite remote sensing - Sea level height - SQL server 2000
Classification code:471 Marine Science and Oceanography - 731.1 Control Systems - 804.1 Organic Compounds - 903.2 Information Dissemination - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2012.15.022
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 27>

Accession number:20124415630967
Title:Potential land use conflict identification and its application in Shenbei New District
Authors:Wang, Qiubing (1); Zheng, Liuping (1); Bian, Zhenxing (1); Qian, Fengkui (1); Liu, Hongbin (1)
Author affiliation:(1) College of Land and Environment, Shenyang Agriculture University, Shenyang 110866, China
Corresponding author:Zheng, L.(zhengliuping@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:185-192
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:It is the basis to prevent and resolve the current increasingly serious land use conflict effectively that identifying potential land use conflict scientifically. Taking Shenbei New District of Shenyang City as an example, a cultivated land multi-objective suitability evaluation system for cultivation and construction was designed, an identification matrix was established to identify potential land use conflict areas, and its application in basic farmland designation was studied. The results showed that the total cultivated land was divided into nine zones, the 2 type zones were potential land use conflict zones, account for 71.10% of the total amount of cultivated land; 3 type zones were non-conflict zones with cultivation advantage, account for 16.33%; 3 type areas were non-conflict zones with construction advantage, account for 9.29%; The other type zones were non-conflict zones, where cultivation and construction suitability were both lower. Combining conflict identification results with the agricultural land classification, basic farmland in Shenbei New District was designated. The research can provide a technical support for prevention and solution of land use conflicts and policy decision for cultivated land protection.
Number of references:23
Main heading:Land use
Controlled terms:Applications - Farms - Identification (control systems)
Uncontrolled terms:Agricultural land - Basic farmland designation - Cultivated lands - Identification matrix - Multi objective - Policy decisions - Suitability evaluation - Technical support
Classification code:403 Urban and Regional Planning and Development - 451.2 Air Pollution Control - 731.1 Control Systems - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.3969/j.issn.1002-6819.2012.15.030
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 28>

Accession number:20124415630982
Title:Near-infrared spectrum detection of tobacco nicotine content based on morphological wavelet
Authors:Cai, Jianhua (1); Wang, Xianchun (1); Hu, Weiwen (1)
Author affiliation:(1) Information Institute, Hunan University of Arts and Science, Changde 415000, China
Corresponding author:Cai, J.(cjh1021cjh@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:281-286
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to improve the accuracy of non-destructive detection of nicotine content of tobacco, a novel method was proposed to get the pretreatment of near-infrared (NIR) spectrum based on morphological wavelet de-noising. The principle and steps of the method were given. The first derivative NIR spectrum of tobacco was served as the target to evaluate the application effect of this method. Then the tobacco nicotine content was calculated based on the de-noised spectrum, and it was compared with the result from wavelet method. Experimental results show that as a kind of nonlinear wavelet, morphological wavelet has both the morphological characteristic of mathematical morphology and the multi-resolution feature of wavelet. It had good performance in keeping details of spectrum and resisting noises. Compared to wavelet threshold method, it had more ideal effects that the correlation ratio (r²) of the prediction set was improved from 0.9877 to 0.9931, and the RMSEP reduced from 0.0539 to 0.0492. The method can be a reference for improving the accuracy of the detection of nicotine content of tobacco and the robustness of model by using near infrared spectroscopy.
Number of references:25
Main heading:Tobacco
Controlled terms:Infrared devices - Mathematical morphology - Models - Near infrared spectroscopy - Optimization - Pyridine
Uncontrolled terms:Application effect - Correlation ratio - First derivative - Ideal effects - Morphological characteristic - Morphological wavelet - Multi-resolution feature - Near infrared spectra - Nicotine - Nicotine content  - NIR spectrum - Nondestructive detection - Nonlinear wavelets - Pre-Treatment - Robustness of model - Wavelet methods - Wavelet threshold
Classification code:741.3 Optical Devices and Systems - 804.1 Organic Compounds - 821.4 Agricultural Products - 902.1 Engineering Graphics - 921 Mathematics - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.15.045
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 29>

Accession number:20124415630964
Title:Experiment on biomass gasification characteristics with tar cracking in gasifier
Authors:Liu, Xin (1); Hu, Xianguo (1); Tang, Zhiguo (1); Ma, Peiyong (1)
Author affiliation:(1) School of Mechanical and Automobile Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author:Tang, Z.(tzhiguo@mail.ustc.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:168-172
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Currently, the mainly technical problems are poor material adaptability, high content of tar and low heat value of product gas during the popularization and application of biomass gasifiers. In this paper, a new biomass gasifier was put forward, in which porous ceramics material inlayed an air guide of U-shaped tube. The experiments results indicated that, when straw stalk of moisture content 12.3% was used, the tar content was reduced to 0.02~0.06 g/m³, average gasification efficiency could reach up to 61.9% and average low heat value of producer gas was about 5.0 MJ/m³. The new structure of biomass gasifier is helpful to obtain high quality gas with lower tar content and higher heat value.
Number of references:25
Main heading:Gasification
Controlled terms:Biomass - Ceramic materials - Coal tar - Experiments - Gas fuels
Uncontrolled terms:Air guides - Biomass Gasification - Biomass gasifier - Gasification efficiency - Gasifiers - Heat value - High quality - High-content - Porous ceramics - Producer gas  - Product gas - Tar cracking - U-shaped tube
Classification code:411.2 Coal Tar - 522 Gas Fuels - 525.1 Energy Resources and Renewable Energy Issues - 802.3 Chemical Operations - 812.1 Ceramics - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2012.15.027
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 30>

Accession number:20124415630968
Title:Calculation of farmland grain potential productivity of Zhouzhi County based on agricultural land classification
Authors:Li, Tuansheng (1); Zhang, Yan (2); Yan, Ying (1); Wu, Haohao (1); Kang, Huanhuan (1); Zhao, Hongzhi (1); Shi, Xiaohui (1)
Author affiliation:(1) Earth Science and Resource College, Chang'an University, Xi'an 710054, China; (2) Tours University, Tours 37041, France
Corresponding author:Li, T.(tuanshen@chd.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
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:In order to calculate rationally farmland potential productivity and fully utilize the results of agricultural land classification, the farmland grain potential productivity system was put forward. The method to calculate grain potential productivity at different levels was discussed. Grain potential productivity system includes natural potential productivity, utilization potential productivity and actual capacity. The natural quality index and the utilization quality index are intrinsically two different kinds of grain potential productivity. They respectively stand for two kinds of potential yield per unit area. Hence, the corresponding potential productivity of a unit of agriculture land classification is the unit area times its corresponding quality index. The grain corresponding potential productivity of the whole county is the sum of the potential productivity of all units. Based on the theoretical analysis and modeling using many models, the results indicate that it is better for the actual productivity calculation to use Logistic model. The results show that the natural potential productivity of farmland of Zhouzhi is 176.778&times; 10⁴ t, the utilization potential productivity of farmland of Zhouzhi is 105.0 &times; 10⁴ t, and that the actual capacity of Zhouzhi is 54.637&times; 10⁴ t.
Number of references:24
Main heading:Productivity
Controlled terms:Classification (of information) - Farms - Grain (agricultural product) - Land use - Quality assurance
Uncontrolled terms:Actual capacity - Agricultural land - Analysis and modeling - Grain potential - Logistic models - Natural potential - Per unit - Potential productivity - Quality indices
Classification code:403 Urban and Regional Planning and Development - 716.1 Information Theory and Signal Processing - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.4 Agricultural Products - 913.1 Production Engineering - 913.3 Quality Assurance and Control
DOI:10.3969/j.issn.1002-6819.2012.15.031
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 31>

Accession number:20124415630961
Title:Engineering design and performance evaluation of super high density recirculating aquaculture system
Authors:Zhang, Yulei (1); Wu, Fan (1); Wang, Zhenhua (1); Song, Hongqiao (1); Shan, Jianjun (1); Guan, Chongwu (1)
Author affiliation:(1) Laboratory of Fishery Equipment and Engineering, Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China
Corresponding author:Wu, F.
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:151-156
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 research the change of water quality, growth of fish and economic benefits of the recirculating aquaculture system (RAS) under high density rearing conditions, a super high density RAS was developed. The system consists of three parallel water treatment branch equipped with some new technology, such as culture tank dual drain technology, radial flow settler, micro-screen drum filter, boiling type moving bed biofilm reactor, multiple chamber spraying oxygenator, CO<inf>2</inf> degassing tower and etc. The paper also put forward a RAS design method which is based on three main water quality parameters, total ammonia nitrogen(TAN), dissolved oxygen concentration (DO) and total suspended solids(TSS). Using tilapia as the rearing object, 6 months experiment showed that the growth of tilapia was good, the highest culture density reached up to 104.2 kg/m³, the feed coefficient was 1.4 and the survival rate was 92.2%. During this period, TAN could be controlled at average (1.09&plusmn;0.55) mg/L, DO 4-9 mg/L, pH 6.45-7.41. Economic evaluation results showed that the running cost of the system was about 25Yuan/kg fish, which was a little higher than the market price of tilapia. But considering the environment cost, the water saving effect of the system is significant, which is only about 0.3-0.5 m³ water per day, based on the measurement of the researchers. So, by properly simplifying the system and choosing some more suitable fish variety, recirculating aquaculture system will be valuable in the future.
Number of references:21
Main heading:Aquaculture
Controlled terms:Carbon dioxide - Costs - Fish - Oxygenation - Water conservation - Water quality - Water treatment
Uncontrolled terms:Design method - Dissolved oxygen concentrations - Drain technology - Drum filters - Economic benefits - Economic evaluations - Engineering design - High density - Market price - Moving bed biofilm reactors  - Performance evaluation - Recirculating aquaculture system - Running cost - Survival rate - Tilapia - Total ammonia nitrogens - Total suspended solids - Water quality parameters - Water saving
Classification code:822 Food Technology - 821.3 Agricultural Methods - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 804.2 Inorganic Compounds - 803 Chemical Agents and Basic Industrial Chemicals - 911 Cost and Value Engineering; Industrial Economics - 471.5 Sea as Source of Minerals and Food - 461 Bioengineering and Biology - 445.2 Water Analysis - 445.1 Water Treatment Techniques - 444 Water Resources - 471 Marine Science and Oceanography
DOI:10.3969/j.issn.1002-6819.2012.15.024
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 32>

Accession number:20124415630983
Title:Non-destructive measurement of soluble solid content in litchi by visible/near-infrared transmission spectroscopy
Authors:Dai, Fen (1); Cai, Bokun (1); Hong, Tiansheng (1); Huang, Guanyong (1); Lin, Dongxia (1); Liu, Chuanyi (1)
Author affiliation:(1) Key Laboratory of Key Technology for South Agricultural Machinery and Equipment, Ministry of Education, Guangzhou 510642, China; (2) Division of Citrus Machinery, China Agriculture Research System, Guangzhou 510642, China; (3) College of Engineering, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Hong, T.(tshong@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:287-292
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 provide a scientific basis for litchi quick and nondestructive detection and classification based on litchi internal quality, the nondestructive testing approach of litchi soluble solids content was studied. First, in the light of litchi hard and rough pericarp, results of diffuse reflectance and transmission experimental methods were compared. And then a variety of pretreatment methods were used to process diffuse transmission spectroscopy. The successive projections algorithm combined with correlation coefficient method was used to select optimal modeling wavelength. At last, partial least squares model and neural network model were built to predict the SSC of litchi. The results showed that diffuse transmission method was better than diffuse reflectance method for litchi spectrum acquisition; After variable compression, 11 preferred wavelengths were extracted, only accounts for 2.2% of the total 500 wavelengths; Based on the 11 wavelengths, the correlation coefficient of the BPNN model for predicted SSC of litchi was 0.867, and the root mean square error was 0.370%. The results indicate that the nondestructive detection for litchi soluble solids content based on diffuse transmission method is feasible.
Number of references:25
Main heading:Wavelength
Controlled terms:Mean square error - Models - Nondestructive examination - Reflection
Uncontrolled terms:Correlation coefficient - Correlation coefficient method - Diffuse reflectance - Diffuse transmission - Experimental methods - Internal quality - Litchi - Neural network model - Non-destructive measurement - Nondestructive detection  - Optimal modeling - Partial least squares models - Pretreatment methods - Root mean square errors - Soluble solid content - Soluble solids content - Successive projections algorithm - Transmission spectroscopy
Classification code:421 Strength of Building Materials; Mechanical Properties - 711 Electromagnetic Waves - 731.1 Control Systems - 902.1 Engineering Graphics
DOI:10.3969/j.issn.1002-6819.2012.15.046
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 33>

Accession number:20124415630956
Title:Comparison of relative uniformity between GLOBCOVER and MODIS land cover data sets
Authors:Song, Hongli (1); Zhang, Xiaonan (1); Wang, Yu (1); Wang, Meng (2)
Author affiliation:(1) Resources College, Hebei University of Engineering, Handan 056038, China; (2) The 2nd Institute of Surveying and Mapping of Hebei Province, Shijiazhuang 050031, China
Corresponding author:Zhang, X.(360217051@qq.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:118-124
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 information on land cover at national scales is critical for addressing a range of problems, including climate change, biodiversity conservation, ecosystem assessment and environmental modeling. In this study, two of the most highly resolution global land cover products were compared: GLOBCOVER and MODIS Collection5, with resolution 300 m and 500 m, respectively, by using the relative comparison analysis to identify areas of spatial agreement and disagreement in national, regional and category levels. The result show that: there is a consistency in national scale, but there remain substantial inconsistencies and discrepancies in subarea, especially in Northeast and Southwest zone; Two products have a serious confusion between Forest/mixed forest, Woodland/shrub land, Cropland and Grassland, especially the Crop land between other categories; the gap for overall accuracy and kappa coefficient form national scale to subarea scale is conspicuous, the value vary from 27.01% to 56.35% for overall accuracy; the range vary from 16.57% to 47.09% for kappa coefficient. Northeast zone has the best consistency with the national scale in general, but Sichuan Basin has the worst consistency with the nation scale. MODIS has a well homogeneous category than GLOBCOVER, the relation between the difference value of homogeneous category and category consistency present an obvious negative correlation, the R² is 0.724. The results can provide a reference for land cover research.
Number of references:23
Main heading:Landforms
Controlled terms:Climate change - Conservation - Forestry - Radiometers - Remote sensing
Uncontrolled terms:Analysis of confusion - Biodiversity conservation - Comparison analysis - Data sets - Ecosystem assessment - Environmental modeling - Kappa coefficient - Land cover - Negative correlation - Relative consistency  - Sichuan Basin - Two-product
Classification code:451 Air Pollution - 454 Environmental Engineering - 481.1 Geology - 731.1 Control Systems - 821.0 Woodlands and Forestry - 944.7 Radiation Measuring Instruments
DOI:10.3969/j.issn.1002-6819.2012.15.019
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 34>

Accession number:20124415630948
Title:Soil moisture utilization depth of apple orchard in Loess Plateau
Authors:Meng, Qinqian (1); Wang, Jian (1); Wu, Faqi (1); Zhang, Qingfeng (1)
Author affiliation:(1) College of Water Resources and Architechral Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Meng, Q.(w184388610@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:65-71
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:Effective usage of the orchard soil water storage and regulation is the basis for managements of water and fertilizer. In this study, the neutron probe and oven drying method were used to monitor the soil water content of apple-fruit orchard for nine years in the Loess Plateau, with the aim of determining the soil moisture utilization depth of apple orchard in Loess Plateau. The results show that the soil moisture utilization depth is between 3.0-5.17 m based on the Darcy's law and soil moisture characteristic parameters measured in the trial apple orchard. The soil moisture utilization depth varies with the different location, which is 3.0 m in sunny slop, 4.5 m in shady slop, 3.5 m in semi-sunny slop and 4.0 m in semi-shady slop. Within the range of effective soil water content, the biggest soil moisture utilization depth increases with the soil water content.
Number of references:31
Main heading:Soil moisture
Controlled terms:Fruits - Landforms - Moisture - Orchards - Soils
Uncontrolled terms:Apple orchards - Characteristic parameter - Darcy's law - Loess Plateau - Orchard soils - Oven drying method - Soil water content
Classification code:481.1 Geology - 483.1 Soils and Soil Mechanics - 801.4 Physical Chemistry - 821.3 Agricultural Methods - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2012.15.011
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 35>

Accession number:20124415630954
Title:Subsequence clustering algorithm based on structural similarity and its application in cow estrus detection
Authors:Yin, Ling (1); Hong, Tiansheng (1); Liu, Hanxing (2); Liu, Caixing (2); Wang, Yongbo (2)
Author affiliation:(1) Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (2) College of Informatics, South China Agricultural University, Guangzhou 510642, China; (3) College of Engineering, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Hong, T.(tshong@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:107-112
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:The efficient and accurate estrus detection technology can enhance conception rates and shorten birth spacing of the breeding dairy cow, which is an important means for improving economic benefit. For the large-scale, intensive farming environment, the cow's behavior and activity is an important indicator to determine whether estrus which is confirmed by numerous academic and scientific research. Usually the cow's behavior decision-making methods are using the single point of data to classify behavior. However the cow's locomotory sensor data were multivariate time series data which were collected by time sequence. This paper presented a subsequence fast clustering algorithm based on structural similarity (SC-SS). The algorithm first partitioned the sensing time series data into several subsequence segment according to the first-order differential value of acceleration; then calculating the structure similarity of each subsequence segment by comparing their features of acceleration, energy, standard deviation; Finally the subsequence were grouped into three clusters. Experiment results on real data set demonstrate that the SC-SS is more efficient than K-means, has and more effective for classification of cow's behavior, which can increase the accuracy of cow's estrus detection.
Number of references:21
Main heading:Behavioral research
Controlled terms:Classification (of information) - Clustering algorithms - Detectors - Time series analysis
Uncontrolled terms:Cow - Dairy cow - Data sets - Decision-making method - Detection technology - Economic benefits - First-order differentials - K-means - Multivariate time series - Scientific researches  - Sensor data - Single point - Standard deviation - Structural similarity - Structure similarity - Time sequences - Time-series data
Classification code:716.1 Information Theory and Signal Processing - 721 Computer Circuits and Logic Elements - 914 Safety Engineering - 922.2 Mathematical Statistics - 971 Social Sciences
DOI:10.3969/j.issn.1002-6819.2012.15.017
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 36>

Accession number:20124415630975
Title:Determination of geographical origin of navel orange by near infrared spectroscopy
Authors:Su, Xuesu (1); Zhang, Xiaoyan (2); Jiao, Bining (2); Cao, Weiquan (1)
Author affiliation:(1) College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China; (2) Citrus Research Institute, Chinese Academy of Agricultural Sciences/Citrus Research Institute, Southwest University, Chongqing 400712, China; (3) Laboratory of Risk Assessment for Citrus Quality and Safety of Ministry of Agriculture (Chongqing), Chongqing 400712, China
Corresponding author:Jiao, B.(bljiao@tom.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:240-245
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to investigate the feasibility for identifying the geographical origin of navel orange by near infrared reflectance spectroscopy (NIRS), three kinds of samples obtained from Jiangxi, Chongqing and Hunan province were tested in this paper. Three models of navel orange traceability were developed using the first derivative (9 points smoothing) of spectra at 1140-1170 nm combined with Soft Independent Modeling of Class Analogy (SIMCA). Under 5% significance level, the identification rates of three models for the calibration set of samples were all 100%, and the rejection rates were 85.7%, 83.3% and 100%, respectively. The identification rates for the validation set of samples were all 100%, and the rejection rates were 100%, 89.5% and 100%, respectively. Give values 0, 1, -1 as category variables for origins of Jiangxi, Chongqing and Hunan, partial least squares-discrimination analysis models (PLS-DA) were established to determine geographical origins of navel orange. The best models were developed using raw spectra at 950-1650 nm when the number of principal components were 13. The results showed that the correlation between the predicted category variable and the measured category variable was significant with high correlation coefficient R² (0.973), low root mean square error of calibration RMSEC (0.110) and root mean square error of prediction RMSEP (0.159). The identification rates were both 100% by PLS-DA model based on the calibration set and validation set of samples. These indicated that NIRS coupled with SIMCA and PLS-DA methods can be used for quickly and accurately discriminating geographical origin of navel orange samples.
Number of references:26
Main heading:Mean square error
Controlled terms:Calibration - Models - Near infrared spectroscopy - Optimization - Principal component analysis
Uncontrolled terms:Geographical origins - Navel orange - Near Infrared - PLS-DA - SIMCA
Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 922.2 Mathematical Statistics - 902.1 Engineering Graphics - 801 Chemistry - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.15.038
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 37>

Accession number:20124415630958
Title:Remote sensing of seasonal variability monitoring of forest LAI over mountain areas in Beijing
Authors:Shi, Yuechan (1); Yang, Guijun (1); Feng, Haikuan (1); Li, Weiguo (1); Wang, Renli (2)
Author affiliation:(1) Beijing Research Center for Information Technology in Agriculture, Beijing 100097, China; (2) Geomatics College, Shandong University of Science and Technology, Qingdao 266510, China
Corresponding author:Yang, G.(guijun.yang@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:133-139
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:Leaf area index (LAI) is an important parameter of vegetation ecosystems, which can reflect the growth status of vegetation. In this study, multi-temporal Landsat5 TM images covering Jiufeng forest in the northwest mountain areas of Beijing were acquired. In-situ forest LAI values were measured synchronously using Hemispherical Photography. By correlation analysis of three vegetation indexes (NDVI, EVI and TGDVI) and LAI, it was found that the correlation between LAI and NDVI in exponential form behaved a good relativity. This model was applied in mapping forest LAI distributions in different time. Moreover, compared with the previous finding regardless of vegetation type, the sensitivity of the models between vegetation indexes and LAI can be improved both in broadleaf and mixed forests, while a little decrease in conifer stands. But, the accuracy of all models reached a significant level.
Number of references:30
Main heading:Forestry
Controlled terms:Monitoring - Remote sensing - Vegetation
Uncontrolled terms:Conifer stands - Correlation analysis - Exponential form - Forest - Hemispherical photography - In-situ - LAI - LANDSAT TM - Landsat-5 TM images - Leaf Area Index  - Mixed forests - Multi-temporal - Seasonal variability - Vegetation index - Vegetation type
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 821.0 Woodlands and Forestry - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 731.1 Control Systems
DOI:10.3969/j.issn.1002-6819.2012.15.021
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 38>

Accession number:20124415630969
Title:Forecasting of grassland carrying capacity of Gannan based on Grey-Markov residual error models
Authors:Zhao, Youyi (1); Lin, Huilong (3); Zhang, Dinghai (2); Ren, Jizhou (1)
Author affiliation:(1) Pratacaltural College of Gansu Agriculture University, Lanzhou 730070, China; (2) Science College of Gansu Agriculture University, Lanzhou 730070, China; (3) College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
Corresponding author:Zhao, Y.(zhaoyy@gsau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
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:In order to predict the actual carrying capacity and theoretical carrying capacity, and to provide the theoretical basis for protecting the ecological environment of grassland and the sustainable development of grassland-animal husbandry, the paper analyzed the real carrying capacity and theoretical carrying capacity of grassland in 4 countries of Gannan in China from 1998 to 2009, based on grey theory and the Markov process, and built a optimized and improved Grey-Markov forecasting model for grassland carrying capacity. The model is equivalent dimensions additional grey model and Markov residual forecasting model. The model was tested by actual stocking capacity in Hezuo country. The prediction by the model had no significant difference with reality (p&lt;0.01, error less than 7.06%). This showed the availability of the model for predicting the carrying capacity of grassland. Furthermore, actual carrying capacity and theoretical carrying capacity in each county of Gannan from 2010 to 2014 were predicted. This study can provide a reference for the relevant departments to determine the reasonable carrying capacities and the grassland management.
Number of references:30
Main heading:Forecasting
Controlled terms:Agriculture - Electric current carrying capacity (cables) - Markov processes - Models
Uncontrolled terms:Analysis - Ecological environments - Equivalent dimensions additional - Forecasting models - Gannan grassland - Grey Model - Grey theory - Residual error - Theoretical basis
Classification code:706.2 Electric Power Lines and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 902.1 Engineering Graphics - 921 Mathematics - 922.1 Probability Theory
DOI:10.3969/j.issn.1002-6819.2012.15.032
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 39>

Accession number:20124415630977
Title:Effect of electron beam irradiation on nutritive and cooking qualities of rice
Authors:Li, Xiang (1); Guo, Dongquan (1); Chen, Yuntang (1); Fan, Jialin (1); L&#252;, Xiaohua (1); Wang, Juanjuan (1); Zhang, Jianwei (1); Yang, Baoan (1)
Author affiliation:(1) Isotope Institute Company, Limited, Henan Academy of Science/Key Laboratory of Nuclear Agriculture, Henan Academy of Science, Zhengzhou 450015, China
Corresponding author:Guo, D.(dongquanguo@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:251-257
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To further consummate and improve the theory about application of ionizing irradiation disinfection and sterilization to stored-grain, rice samples were exposed to electron beam with dosage levels of 0, 0.83, 1.56, 2.30, 4.93 kGy to evaluate the effect of electron beam irradiation on nutritive quality, pasting property, cooking and eating qualities of rice. The results showed that the protein content and amino acid composition of rice were not significantly influenced by irradiation (p &gt; 0.05), fatty acid value and gel consistency raised while water absorption and swelling degree reduced with the increasing irradiation dosage (p &lt; 0.05). No significant change in pasting temperature was observed between irradiated and non-irradiated samples (p &lt; 0.05), but peak viscosity, breakdown, setback of rapid visco analyzer were significantly decreased with dosage increasing (p &lt; 0.05). The cooking quality was significatnly lowered by irradiation with the increasing dosage (p &lt; 0.05), and the cooked rice browned at 4.93 kGy dosage level. Thus, the adequate electron beam irradiation dose for rice should be less than 2.30 kGy, and the best qualities of rice will be kept when irradiated with 0.83 kGy. The experimental results can provide a theoretical evidence for the choice of irradiation dosage for the application of low-energy electron beam irradiation in sterilization as well as insect disinfection of rice.
Number of references:42
Main heading:Radiation
Controlled terms:Amino acids - Disinfection - Electron beams - Electrons - Fatty acids - Irradiation - Nutrition - Quality control - Sterilization (cleaning) - Thermal processing (foods)
Uncontrolled terms:Amino acid compositions - Cooked rice - Cooking quality - Dosage levels - Eating quality - Electron beam irradiation - Gel consistencies - Ionizing irradiation - Low energy electron beam irradiation - Pasting property  - Pasting temperature - Peak viscosities - Protein contents - Rapid visco analyzers - Rice - Rice samples - Swelling degree
Classification code:932.1 High Energy Physics - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 913.3 Quality Assurance and Control - 822.3 Food Products - 822.2 Food Processing Operations - 804.1 Organic Compounds - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves - 701.1 Electricity: Basic Concepts and Phenomena
DOI:10.3969/j.issn.1002-6819.2012.15.040
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 40>

Accession number:20124415630966
Title:Effects of pretreatment of sweet sorghum stalk with plant growth regulator on its sugar content during storage
Authors:Mei, Xiaoyan (1); Liu, Ronghou (2); Cao, Weixing (2)
Author affiliation:(1) Liaoning Institute of Agriculture Managerial Staff, Shenyang 110161, China; (2) Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai JiaoTong University, Shanghai 200240, China
Corresponding author:Mei, X.(mxy2431@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:179-184
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 sugar loss of sweet sorghum stalk during natural storage and to understand relation between sugar loss and change of enzyme activity, the effects of pretreatment of sweet sorghum stalk with plant growth regulator including gibberellin (GA3), potassium salt of maleic hydrazide (KMH), and Na salt of naphthalene acetic acid (NAA-Na) on its sugar content and change of related enzyme activity during natural storage were investigated. Results showed that the storage period of sweet sorghum stalk can be prolonged to 3-4 months with pretreatment of suitable types and doses of plant growth regulators. The sugar contents of sweet sorghum stalks with pretreatment of GA3 (40 mg/L), KMH (400 mg/L) and NAA-Na (70 mg/L) after 112 d storage were 95%, 92% and 94% of their initial sugar contents, respectively, which were significantly higher than that of the control. In addition, the pretreatments of sweet sorghum stalk with suitable types and doses of plant growth regulators can significantly regulate its biological enzyme activities related to aging and sugar metabolism. Three types of plant growth regulators can slow down the sugar loss of sweet sorghum stalk after harvesting through regulating related enzyme activities. The research can provide a scientific reference for the storage of sweet sorghum stalk for large scale bioethanol production.
Number of references:31
Main heading:Sugars
Controlled terms:Biomass - Energy storage - Enzyme activity - Ethanol
Uncontrolled terms:Bio-ethanol production - Naphthaleneacetic acid - Plant growth regulators - Potassium salts - Pre-Treatment - Pre-treatments - Storage periods - Sugar content - Sugar loss - Sugar metabolism  - Sweet sorghum
Classification code:461.9 Biology - 525.1 Energy Resources and Renewable Energy Issues - 702 Electric Batteries and Fuel Cells - 804.1 Organic Compounds
DOI:10.3969/j.issn.1002-6819.2012.15.029
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 41>

Accession number:20124415630947
Title:Measurement and modeling of soil moisture based on dual-sensor data fusion
Authors:Sun, Daozong (1); Wang, Weixing (1); Jiang, Sheng (1)
Author affiliation:(1) Key Laboratory of Key Technology for South Agricultural Machine and Equipment, College of Engineering, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Wang, W.(weixing@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:60-64
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 overcome soil hardness influence on the measured soil moisture data using TDR-3 soil humidity sensor, and to obtain an objective soil moisture, a soil humidity measurement device was designed and developed based on the TDR-3 soil humidity sensor and a soil hardness tester. The device was calibrated by three-factor orthogonal test with factors as the soil moisture, soil hardness and TDR-3 sensor output voltage was carried out through the reverse drying precise calculation of water and soil mass percentage. The mathematical relationship among the three factors was constructed with Matlab software by dualistic curve fitting. Experimental results indicated that the developed device can directly measure mass percentage of soil moisture after fusing output voltage from the TDR-3 sensor with the hardness data from the soil hardness tester. Test result indicated that, after fusing the TDR-sensor output voltage with the soil hardness data, the soil moisture can be measured directly by the device. The error between measured and theoretical values was less than 4.75% and the measurement accuracy could be significantly improved comparing to that only using the TDR-3 sensor. The maximum repeatability error for the same soil was 0.83%, indicating that the model has a certain reliability and robustness. The research can provide a reference for the development of accurate soil moisture sensors.
Number of references:22
Main heading:Soil surveys
Controlled terms:Curve fitting - Data fusion - Electronic equipment testing - Geologic models - Hardness - Hardness testing - Humidity sensors - Sensor data fusion - Sensors - Soil moisture
Uncontrolled terms:Dual sensor - Mass percentage - Mathematical relationship - Matlab- software - Measurement accuracy - Orthogonal test - Output voltages - Reliability and robustness - Sensor output - Soil humidity  - Soil mass - Soil moisture sensors - TDR-3 - Theoretical values
Classification code:951 Materials Science - 921.6 Numerical Methods - 801 Chemistry - 732 Control Devices - 723.2 Data Processing and Image Processing - 715 Electronic Equipment, General Purpose and Industrial - 643 Space Heating, Ventilation and Air Conditioning - 483.1 Soils and Soil Mechanics - 481.1 Geology - 422.2 Strength of Building Materials : Test Methods - 421 Strength of Building Materials; Mechanical Properties
DOI:10.3969/j.issn.1002-6819.2012.15.010
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 42>

Accession number:20124415630949
Title:Characteristics of deep soil desiccation of apple orchards in different weather and landform zones of Loess Plateau in China
Authors:Cao, Yu (1); Li, Jun (1); Zhang, Shehong (1); Wang, Yali (1); Cheng, Ke (1); Wang, Xuechun (1); Wang, Yuling (1); Naveed Tahir, M. (1)
Author affiliation:(1) College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author:Li, J.(junli@nwsuaf.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:72-79
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to assess the deep soil desiccation and its regional distributing characteristics in apple production areas of the loess plateau, the research was carried out via widely observations of soil moisture in 0-1500 cm soil layers of apple orchards in different weather and landform zones on the Loess Plateau. The soil water amount, soil moisture distribution in deep soil profile and soil desiccation of 32 apple orchards in semi-humid loess terrace-land zone (I), semi-humid and prone drought loess highland zone (II), and semi-humid prone drought and semi-arid loess hilly zone (III) were analyzed and compared, and soil desiccation characteristics of apple orchards were assessed quantitatively. The results showed that, 1) Average soil moisture in 0-1500 cm soil layers of apple orchards in zone I, II and III was 17.53%, 13.44% and 10.29%, respectively, average available soil water storage was 1273.70, 973.98 and 864.05 mm, respectively, average soil water overuse was 199.93, 465.10 and 362.70 mm, respectively, and average soil desiccation rate was 8.47, 26.29 and 23.44 mm/a in three zones, accordingly. Soil moistures and desiccated soil layer distributions in apple orchards were affected by weather, landform, irrigation, apple tree age and planting density; 2) Soil moisture of apple orchards with supplementary or regular irrigation was significantly higher than that of dryland orchards in the same zone at whole observed depth of soil layers, and no soil desiccation or limited soil desiccation occurred, while relatively deep desiccated soil layers existed in dryland orchards; 3) SDI (soil desiccation index) of apple orchards with supplementary or regular irrigation in Zone I, II and III was -8%, -11% and -34%, respectively, while SDI of dryland apple orchards was 32%, 50% and 46%, with desiccated soil layer thickness of 790, 1297 and over 910 cm in three zones correspondingly. The results can provide a scientific basis and basic data for deep soil water sustainable utilization of apple orchards and sustainable development of apple production bases on the Loess Plateau.
Number of references:30
Main heading:Orchards
Controlled terms:Digital storage - Driers (materials) - Drought - Fruits - Irrigation - Landforms - Moisture - Soil moisture - Soils
Uncontrolled terms:Apple orchards - Apple production - Apple trees - Available soil waters - Deep soils - Dryland - Limited soils - Loess Plateau - Planting density - Semi arid  - Soil layer - Soil moisture distribution - Soil water - Sustainable utilization - Three zones
Classification code:821.3 Agricultural Methods - 803 Chemical Agents and Basic Industrial Chemicals - 801.4 Physical Chemistry - 821.4 Agricultural Products - 722.1 Data Storage, Equipment and Techniques - 481.1 Geology - 444 Water Resources - 483.1 Soils and Soil Mechanics
DOI:10.3969/j.issn.1002-6819.2012.15.012
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 43>

Accession number:20124415630972
Title:Effects of drying methods on qualities and microstructure of tilapia fillet
Authors:Liu, Shucheng (1); Zhang, Changsong (1); Ji, Hongwu (1); Zhang, Chaohua (1); Hong, Pengzhi (1); Gao, Jialong (1)
Author affiliation:(1) Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Zhanjiang 524088, China; (2) College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
Corresponding author:Liu, S.(Lsc771017@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:221-227
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Tilapia fillets were dried by hot-air drying, vacuum freezing drying and supercritical carbon dioxide drying and the effects of three drying methods on qualities and microstructure of tilapia fillets were investigated. Qualities (nutrition, microbe, sensory, rehydration, texture) and microstructure of tilapia fillets were determined and analyzed. The results showed that, compared with hot air drying and vacuum freezing drying, the content of crude protein of tilapia fillet was higher and the content of its crude fat was lower by supercritical carbon dioxide drying. Supercritical carbon dioxide drying had the better effect of sterilization than hot air drying and vacuum freezing drying. Shrinkage and rehydration rates of tilapia fillet by supercritical carbon dioxide drying were slightly less than those by vacuum freezing drying. But sensory, texture and microstructure of tilapia fillet by supercritical carbon dioxide drying were similar to those by vacuum freezing drying. The qualities of tilapia fillet by supercritical carbon dioxide drying were much better than those by hot air drying. From the view of drying economics, supercritical carbon dioxide drying of tilapia fillet is feasible. The results can provide a reference for choosing the drying method of tilapia fillet.
Number of references:25
Main heading:Drying
Controlled terms:Carbon dioxide - Freezing - Microstructure - Supercritical fluid extraction - Textures
Uncontrolled terms:Crude fat - Crude proteins - Drying methods - Hot air drying - Qualities - Supercritical carbon dioxides - Tilapia fillet
Classification code:802.3 Chemical Operations - 804.2 Inorganic Compounds - 933 Solid State Physics
DOI:10.3969/j.issn.1002-6819.2012.15.035
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 44>

Accession number:20124415630942
Title:Optimization of valve timing and injection advance angle of diesel engine based on OPTIMUS
Authors:Huang, Fenlian (1); Ji, Wei (1); Zhang, Lu (1); Zhou, Wei (2)
Author affiliation:(1) Department of Engineering, China Agriculture University, Beijing 100083, China; (2) Institute of Road Research, Ministry of Transport of the People's Republic of China, Beijing 100088, China
Corresponding author:Ji, W.(jiwei21st@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:27-32
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 valve timing and fuel injection advance angle have enormous influence on the performance of diesel engine. The optimum matching of them is conducive to forming the nicer air-fuel ratio and better combustion efficiency in-cylinder; then the engine can obtain higher power output and lower fuel consumption. To optimize the matching, Firstly, the numerical simulation model of turbocharged direct injection diesel engine was imported into the OPTIMUS, which is a multidisciplinary optimization platform. Then the intake lag angle, exhaust and injection advance angle were regarded as the optimization variables as well as the maximum torque and minimum specific fuel consumption were the optimization objective. After optimization, the mean engine power output has been increased by 2.57%, and the mean specific fuel consumption has been decreased by 2.66%. Finally, the simulation and experimental results show that the design of model is reasonable and accurate, and the overall performance of diesel engine is improved after parameterized optimization.
Number of references:30
Main heading:Diesel engines
Controlled terms:Computer simulation - Engine cylinders - Fuel injection - Optimization
Uncontrolled terms:Air fuel ratios - Combustion efficiencies - Direct injection diesel engines - Engine power output - Injection advance angles - Maximum torque - Multi-disciplinary optimizations - Optimization variables - Optimum matching - Optimus  - Parameterized - Power out put - Specific fuel consumption - Valve timing
Classification code:521 Fuel Combustion and Flame Research - 612.1.1 Internal Combustion Engine Components - 612.2 Diesel Engines - 723.5 Computer Applications - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.15.005
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 45>

Accession number:20124415630943
Title:Design and test on shelling and sorting machine of camellia oleifera fruit
Authors:Lan, Feng (1); Cui, Yong (1); Su, Zihao (1); Li, Ziming (1); Xie, Shu (1)
Author affiliation:(1) Institute of Agricultural Mechanization Jiang Xi, Nanchang 330044, China
Corresponding author:Lan, F.(lf0791108@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:33-39
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to find out an effective way for shelling camellia oleifera fruit and separating the seed from the fruit, the biological characteristic of camellia oleifera fruit was studied, and according to the principle of impacting, extruding and rubbing, a shelling and sorting machine of camellia oleifera fruit was designed. A shelling rod which had torsion angle, cone angle and different radius of gyration, was constructed a wedge shaped shelling chamber to shell the different kinds of fruit. Based on the different shape between the fruit and the seed, the mechanism with group gears rolls and rolls was designed, and shelling and sorting tests was carried on the machine. Experiment results showed that, for the high moisture, crack or untracked camellia oleifera fruit, under the conditions which the speed of shelling rod was 350-400 r/min, cone angle was 3 degrees, the gap between gear roll and roll was 1-1.5 mm and the sieve pore diameter was 24 mm, the disposal of fruit achieved 1000 kg/h, the shelling rate was more than 99%, and the sorting rate was more than 95%, the fragment rate of seed was less than 3%, and the loss rate was less than 2%. Experiment results showed that the machine was ingeniously conceived and reliable, and can be put into production.
Number of references:23
Main heading:Fruits
Controlled terms:Experiments - Sorting
Uncontrolled terms:Biological characteristic - Cone angle - Design and tests - Different shapes - High moisture - Loss rates - Oleifera - Pore diameters - Processing technologies - Radius of gyration  - Shelling - Test - Torsion angle
Classification code:723.1 Computer Programming - 821.4 Agricultural Products - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2012.15.006
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 46>

Accession number:20124415630946
Title:Effect of plastic film mulching and straw buried on soil water-salt dynamic in Hetao plain
Authors:Wang, Jing (1); Pang, Huancheng (1); Ren, Tianzhi (1); Li, Yuyi (1); Zhao, Yonggan (1)
Author affiliation:(1) Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Corresponding author:Pang, H.(hcpang@caas.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:15
Issue date:August 1, 2012
Publication year:2012
Pages:52-59
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to study the influence of different tillage adjustment measures on soil water and salinity distribution, field experiments were conducted under four tillage practices of plastic film mulching and straw buried (P S), plastic film mulching(CK<inf>P</inf>), straw buried (CK<inf>S</inf>), and ploughing tillage(CK<inf>T</inf>) in Hetao Irrigation regions of Inner Mongolia. The results showed that the soil water content increased dramatically under the P S, especially in the 20 to 40 cm depth. Compared to the treatments of CK<inf>P</inf>, CK<inf>S</inf> and CK<inf>T</inf>, the soil water content of 20 to 40 cm depth with P S treatment increased by 20.69%, 5.62% and 38.03%, respectively, at the harvest stage. During the sunflower growth period, the P S treatment cut down the soil salt content significantly. And its salinity accumulation was only 0.06 g per kilogram soil, less than those of the other treatments CK<inf>S</inf>, CK<inf>P</inf> and CK<inf>T</inf> by 35.11%, 133.78% and 276.89%, respectively. In addition, the salinity was fully eluted in the depth of 20 to 50 cm under the P S treatment. Consequently, the P S treatment established a favorable soil solution system to lower salt and increase moisture, which will be conducive to the root growth of sunflower in the seedling stage. Furthermore, the soil bulk density reduced while soil organic matter and moisture amount raised after the measures of P S. For that, it suppressed the evaporation of grounder water which with higher degree of minimization prevented the salinity with water coming and assembling on the soil surface.
Number of references:39
Main heading:Soil moisture
Controlled terms:Agricultural machinery - Agriculture - Moisture - Plastic films - Salinity measurement - Soils - Straw - Water content
Uncontrolled terms:Field experiment - Growth period - Hetao Plain - Inner Mongolia - Root growth - Salinity distributions - Soil bulk density - Soil organic matters - Soil salt content - Soil solutions  - Soil surfaces - Soil water - Soil water content - Tillage practices
Classification code:444 Water Resources - 483.1 Soils and Soil Mechanics - 801.4 Physical Chemistry - 817.1 Polymer Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.3969/j.issn.1002-6819.2012.15.009
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.