1.     
 
 Accession number:  20105013479951
 
 Title:  Influence of soft sediment adhered to track on adhesion performance of seabed track vehicle
 
 Authors:  Wu, Hongyun1, 2 ; Chen, Xinming2 ; Liu, Shaojun1 ; Gao, Yuqing2 ; Chen, Bingzheng2 
 
 Author affiliation:  1  College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
 
2  Department of Ocean Research, Changsha Institute of Mining Research, Changsha 410012, China
 
 
 Corresponding author:  Wu, H. (why@cimr.com.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  140-145
 
 Language:  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 optimize the design of seabed tracked vehicle, the influence of seabed soft sediment between the track plate and track shoe on the adhesion performance of seabed tracked vehicle was analyzed. The adhesion mechanism between seabed tracked vehicle and seabed soft sediment was analyzed and adhesion mechanics model was established. The effect of the physical and mechanical properties of seabed soft sediment and the material properties of track plate and track shoe on the adhesion performance was researched theoretically. Physical and mechanical properties of seabed soft sediment and the material properties of track plate and track shoe had affacts on the adhesion. Distribution of the sediment in the chain link along the forward direction was gradually reduced. The grounding pressure and additional weight increased by 25%. The largest effect on the adhesion was cohesive force, followed by driving force and internal friction force and friction could be neglected. The proportion of the former two were respectly 40.6% and 33.8%. The effective shear height of track shoe was lower, which greatly reduced the adhesion performance, and the hight of track shoe should be designed to be 15 cm. The adhesion performance of the seabed tracked vehicle soft seabed sediments is decreased due to the soft sediment adhered to its tracks.
 
 Number of references:  17
 
 Main heading:  Adhesion
 
 Controlled terms:  Construction equipment  -  Friction  -  Machinery  -  Materials properties  -  Mechanical properties  -  Sedimentology  -  Tracked vehicles
 
 Uncontrolled terms:  Adhesion mechanisms  -  Adhesion performance  -  Chain links  -  Cohesive force  -  Driving forces  -  Material property  -  Mechanics models  -  Physical and mechanical properties  -  Resistance  -  Seabed sediments   -  Seabed tracked vehicle  -  Shear height  -  Soft sediments  -  Track shoes  -  Track vehicles
 
 Classification code:  951 Materials Science  -  931.1 Mechanics  -  801 Chemistry  -  663 Buses, Tractors and Trucks  -  601 Mechanical Design  -  481.1 Geology  -  423 Non Mechanical Properties and Tests of Building Materials  -  421 Strength of Building Materials; Mechanical Properties  -  405.1 Construction Equipment
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.023
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  2.     
 
 Accession number:  20105013479989
 
 Title:  Drying characteristics and dynamics model of green tea by microwave vacuum drying
 
 Authors:  Wei, Wei1, 2 ; Li, Weixin1, 2 ; He, Zhigang1, 2 ; Lin, Xiaozi1, 2 
 
 Author affiliation:  1  Agricultural Product Process Research Centre, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
 
2  Institute of Agricultural Engineering Technology, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
 
 
 Corresponding author:  He, Z. (njgzx@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  367-371
 
 Language:  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 experiments of microwave vacuum drying of green tea were conducted for study rules of moisture change during drying process. With drying curves and dehydrating rate curves, the effect of relative pressure and specific power on microwave vacuum drying characteristics of green tea was studied, and a drying dynamics model was established. The results showed that, according to the dehydrating rate, the process of microwave vacuum drying for green tea could be divided into two stages-accelerated phase and decelerated phase, without obvious constant-speed phase. The drying time decreased with relative pressure decreasing, however, change of moisture content was indistinctive when relative pressure kept decreasing beyond-80 kPa, and the drying time decreased with specific power increasing. The dynamics model of microwave vacuum drying for green tea agreed with Page equation, which could be used for describing the relationship among moisture content, drying time and specific power. The experiment results can provide a technical basis for controllable industrialization production of green tea.
 
 Number of references:  16
 
 Main heading:  Drying
 
 Controlled terms:  Curing  -  Dynamics  -  Experiments  -  Microwaves  -  Moisture  -  Moisture determination  -  Pressure effects  -  Secondary batteries  -  Vacuum
 
 Uncontrolled terms:  Drying characteristics  -  Drying curves  -  Drying process  -  Drying time  -  Dynamics models  -  Green tea  -  Microwave-vacuum drying  -  Moisture contents  -  Specific power  -  Two stage
 
 Classification code:  944.2 Moisture Measurements  -  931.1 Mechanics  -  901.3 Engineering Research  -  815.1 Polymeric Materials  -  801.4 Physical Chemistry  -  711 Electromagnetic Waves  -  702.1.2 Secondary Batteries  -  642.1 Process Heating  -  633 Vacuum Technology
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.061
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  3.     
 
 Accession number:  20105013479952
 
 Title:  Static steering resisting moment of tire for heavy multi-axle steering vehicle
 
 Authors:  Wang, Yunchao1 ; Gao, Xiuhua2 ; Zhang, Xiaojiang2 
 
 Author affiliation:  1  College of Mechanical Engineering, Jimei University, Xiamen 361021, China
 
2  College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
 
 
 Corresponding author:  Wang, Y. (ychaowang@jmu.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  146-150
 
 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 solve the damage problem of steering tie rods for heavy multi-axle steering vehicle, the main influence factors, static steering resisting moment of tire, were tested. Based on the vehicle actual road test, the effects of wheel steering angle, vertical loading, friction coefficient and tire pressure on the static steering resisting moment of tire were analyzed. The test data fitting analysis of main influence factors was done by Matlab software. The experimental formula of static steering resistance moment was provided. The prediction error rate of the formula was less than 10% by the verification of test data for the same types of tire. The results can provide a certain theoretical and experimental foundation for improving the safety, reliability and matching ability of the hydraulic power steering system.
 
 Number of references:  14
 
 Main heading:  Automobile steering equipment
 
 Controlled terms:  Axles  -  Data handling  -  Friction  -  Steering  -  Tires  -  Wheels
 
 Uncontrolled terms:  Friction coefficients  -  Heavy vehicle  -  Hydraulic power steering systems  -  Influence factors  -  Matlab- software  -  Multi-axle  -  Prediction error rates  -  Road tests  -  Steering tie rod  -  Test data   -  Tire pressure  -  Vertical loadings  -  Wheel steering angle
 
 Classification code:  601.2 Machine Components  -  663.2 Heavy Duty Motor Vehicle Components  -  682.1.1 Railroad Cars  -  723.2 Data Processing and Image Processing  -  818.5 Rubber Products  -  931.1 Mechanics
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.024
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  4.     
 
 Accession number:  20105013479972
 
 Title:  Simulation of dry matter partitioning of greenhouse cucumber under different fruit load conditions
 
 Authors:  Ma, Wanzheng1 ; Mao, Hanping1 ; Ni, Jiheng1 
 
 Author affiliation:  1  Key Lab. of Modern Agricultural Equipment and Technol., Ministry of Edu. and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
 
 
 Corresponding author:  Ma, W. (mwzujs@126.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  259-263
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Cucumber is one of a major greenhouse crop and an important horticultural crop in China. Cucumber production and fruit development are correlated with fruit load. Found the simulation model of greenhouse cucumber under different fruit load conditions can play an important role in greenhouse climate control, management decision of the grower. A model of dry matter partitioning of greenhouse cucumber under different fruit load conditions was developed based on the production of thermal effectiveness and PAR (relative thermal effectiveness). Other experiments were carried out in greenhouse to collect data to validate the model. The results showed that the simulated values agreed well with the measured ones. The determination coefficient (R2) and root mean squared error (RMSE) between the simulated and the measured values based on the 1:1 line for dry matter weight of stem, leaf and fruit were 0.76, 0.73, 0.75 and 223.08, 119.23, 316.34 kg/hm2, respectively. Based on the results obtained in this study, it can be concluded that the model developed can give a satisfactory prediction of dry matter partitioning of greenhouse cucumber. The model developed in this study is applicable for the optimization of the climate and crop management for greenhouse cucumber production.
 
 Number of references:  19
 
 Main heading:  Computer simulation
 
 Controlled terms:  Climate control  -  Climate models  -  Crops  -  Curing  -  Fruits  -  Greenhouses
 
 Uncontrolled terms:  Crop managements  -  Cucumber  -  Determination coefficients  -  Dry matter partitioning  -  Dry matters  -  Fruit development  -  Fruit load  -  Greenhouse climate control  -  Greenhouse crops  -  Greenhouse cucumbers   -  Horticultural crops  -  Loads  -  Management decisions  -  Root mean squared errors  -  Satisfactory predictions  -  Simulation  -  Simulation model  -  Thermal effectiveness
 
 Classification code:  821.6 Farm Buildings and Other Structures  -  821.4 Agricultural Products  -  815.1 Polymeric Materials  -  921 Mathematics  -  723.5 Computer Applications  -  402.1 Industrial and Agricultural Buildings  -  402 Buildings and Towers  -  443 Meteorology
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.044
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  5.     
 
 Accession number:  20105013479953
 
 Title:  Multi-factor regression analysis of anti-wind erosion effects of conservation tillage farmland
 
 Authors:  Sun, Yuechao1 ; Ma, Shuoshi2 ; Chen, Zhi2 ; Zhao, Yonglai1 ; Su, Jie1 
 
 Author affiliation:  1  Vocational and Technical College, Inner Mongolia Agricultural University, Baotou 014109, China
 
2  College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
 
 
 Corresponding author:  Chen, Z. (chz6653@sohu.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  151-155
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to quantitatively evaluate the effects of wind tunnel central speed, stubble height, vegetation coverage and their interaction on wind erosion of conservation tillage farmland, uniform experimental design and wind tunnel testing in-situ field were adopted, and multi-factor experiment of anti-wind erosion effects of conservation tillage farmland was completed. Conservation tillage farmland anti-wind erosion model was established using partial least-squares regression (PLSR) theory. The results showed that effects of each factor on sediment transport rate in proper order were center wind speed, vegetation coverage and stubble height; those on retention rate in proper order were stubble height, vegetation coverage and center wind speed; for both sediment transport rate and retention rate, interaction regulations between factors were same i.e. stubble height × vegetation coverage, center wind speed × vegetation coverage and center wind speed × stubble height based on the order of the main effect standard regression coefficients. The results showed that anti-wind erosion mechanism of conservation tillage farmland was not only affected by single factor, but also closely related with the interactions among central speed, stubble height and vegetation coverage.
 
 Number of references:  18
 
 Main heading:  Wind effects
 
 Controlled terms:  Aerodynamics  -  Agricultural machinery  -  Design of experiments  -  Erosion  -  Farms  -  Metal analysis  -  Regression analysis  -  Sediment transport  -  Sedimentology  -  Soil conservation   -  Speed  -  Statistics  -  Vegetation  -  Wind tunnels
 
 Uncontrolled terms:  Conservation tillage  -  Experimental design  -  In-situ  -  In-situ test  -  Interaction  -  Main effect  -  Multi-factor  -  Partial least squares  -  Partial least-squares regression  -  Regression coefficient   -  Retention rate  -  Sediment transport rate  -  Vegetation coverage  -  Wind erosions  -  Wind speed  -  Wind-tunnel testing
 
 Classification code:  931.1 Mechanics  -  922.2 Mathematical Statistics  -  901.3 Engineering Research  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  801 Chemistry  -  651.2 Wind Tunnels  -  651.1 Aerodynamics, General  -  531 Metallurgy and Metallography  -  483.1 Soils and Soil Mechanics  -  483 Soil Mechanics and Foundations  -  481.1 Geology  -  443.1 Atmospheric Properties  -  407 Maritime and Port Structures; Rivers and Other Waterways
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.025
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  6.     
 
 Accession number:  20105013479976
 
 Title:  CFD simulation and temperature field validation of biogas digester mixing
 
 Authors:  Bi, Junwei1 ; Zhu, Hongguang1 ; Shi, Huixian1 ; Li, Yongming1 ; Rong, Ling1 ; Wang, Tao1 
 
 Author affiliation:  1  Modern Agricultural Science and Engineering Institute, Tongji University, Shanghai 200092, China
 
 
 Corresponding author:  Zhu, H. (zhuhg@mail.tongji.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  283-289
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  The characteristics of the flow field in anaerobic digester with the bottom side entering agitator was studied by computational fluid dynamics (CFD). With data collected from a main methane fermentation tank (69.3 m3) of demonstration project in Shanghai Chongming County, numerical simulation for the temperature and flow field was performed. The reliability of the temperature field simulation was certificated with the temperature measurements, which indirectly verified the flow field data. Temperature simulation results were compared with experiment data, and the statistical analysis showed no significant difference under 0.05 level. The bottom side entering agitator can not form the full loop in the fermentation tank according to the numerical simulation and actual observation. However, there are some discrepancies between the model settings and the actual situation, the model still needs to be improved.
 
 Number of references:  21
 
 Main heading:  Computational fluid dynamics
 
 Controlled terms:  Biogas  -  Fermentation  -  Flow fields  -  Flow simulation  -  Fluid dynamics  -  Fluids  -  Methane  -  Tanks (containers)  -  Temperature distribution  -  Temperature measurement   -  Thermoanalysis
 
 Uncontrolled terms:  Anaerobic digester  -  Biogas digesters  -  CFD simulations  -  Computational fluid  -  Demonstration project  -  Experiment data  -  Methane fermentation  -  Numerical simulation  -  Statistical analysis  -  Temperature field   -  Temperature field simulation  -  Temperature simulations
 
 Classification code:  944.6 Temperature Measurements  -  801.2 Biochemistry  -  801 Chemistry  -  641.1 Thermodynamics  -  631 Fluid Flow  -  619.2 Tanks  -  522 Gas Fuels
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.048
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  7.     
 
 Accession number:  20105013479956
 
 Title:  Method of test environments selection for corn lodging resistance
 
 Authors:  Liu, Zhe1 ; Li, Shaoming1 ; Yang, Jianyu1 ; Yang, Yang1 ; Mi, Chunqiao1 ; Wang, Hu1 ; Zhang, Xiaodong1 ; Zhu, Dehai1 
 
 Author affiliation:  1  College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
 
 
 Corresponding author:  Li, S. (lshaoming@sina.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  167-171
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Lodging is a major stress of maize. In order to improve the efficiency of lodging resistance detection of new varieties, high stress location must be selected as a test environment. In this study, firstly, corn lodging mechanism and wind stress probability model were researthed. Secondly, lodging probability of each meteorological station caused by wind stress was calculated. Then, lodging probability was obtained for all counties in Northeast and North China, the Huang-Huai-Hai Plain, by using Spatial Interpolation and Regional Statistical Analysis. Finally, the test environments selection analysis for corn lodging resistance was conducted. The results show that: counties with lodging probability above 60% are suitable for alternative environments, lodging will certainly happen among 3-5 locations in each year; the average critical lodging probability of the Huang-Huai-Hai Plain is higher than that of the Northeast and North China, the available counties for critical lodging in the two regions is 54, the severe is 16, and the medium is 21. The method provides a quantitative operation for test environments selection decision-making. The lodging probability of environment trials can be significantly improved, which contributes to test lodging resistance of new varieties sufficiently and reduces extension risk.
 
 Number of references:  22
 
 Main heading:  Probability
 
 Controlled terms:  Decision making  -  Grain (agricultural product)  -  Testing  -  Wind stress
 
 Uncontrolled terms:  Corn  -  GIS  -  High stress  -  Lodging  -  Lodging resistance  -  Meteorological station  -  North China  -  Selection decisions  -  Spatial interpolation  -  Statistical analysis   -  Stress probability  -  Test Environment
 
 Classification code:  402 Buildings and Towers  -  421 Strength of Building Materials; Mechanical Properties  -  423.2 Non Mechanical Properties of Building Materials: Test Methods  -  821.4 Agricultural Products  -  912.2 Management  -  922.1 Probability Theory
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.028
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  8.     
 
 Accession number:  20105013479961
 
 Title:  Three dimensional reconstruction and visual modeling of plant architecture based on voxel coloring
 
 Authors:  Guo, Hao1 ; Ge, Zhenyang1 ; Jiang, Haibo1, 2 ; Lin, Wenru1 ; Liu, Jing1 
 
 Author affiliation:  1  Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650224, China
 
2  Chengdu Institute of Computer Application, Chinese Acad. of Sci., Chengdu 610041, China
 
 
 Corresponding author:  Ge, Z. (ge.27@kmust.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  195-200
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Stereo vision principle is generally used in the three-dimensional reconstruction and modeling of the plants. Because stereo matching can not be done automatically, it is more difficult for the temporal and spatial variation of plant architecture to be investigated. Three dimensional (3D) reconstruction system of recording the spatial variation of the plant was designed on the basis of the voxel coloring method and the point clouds of the plant was reconstructed by adopting the system mentioned above. The algorithm aiming at filtering, classifying and extracting the information of topological and geometric of plant was put forward. Based on OpenAlea and by using the information of the plant architecture, modeling of plant architecture was established and visual simulating of plant was implemented. Cinnamomum burmannii was used as a sample to validate the three-dimensional reconstruction system. The results indicated the system could reconstruct the point clouds of the plant stem and leaf automatically. The algorithm of extracting architectural information of plant could be used to acquire the topological and geometrical parameters precisely and promptly, and these parameters could be used to visually simulate the plant architecture. This paper can provide a new method and contribute to the exploration research on the plant automatically reconstruction in digital agriculture.
 
 Number of references:  16
 
 Main heading:  Three dimensional
 
 Controlled terms:  Algorithms  -  Clouds  -  Stereo vision  -  Topology
 
 Uncontrolled terms:  Plant architecture  -  Point cloud  -  Reconstruction  -  Visual modeling  -  Voxel
 
 Classification code:  443 Meteorology  -  723 Computer Software, Data Handling and Applications  -  723.5 Computer Applications  -  921 Mathematics  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.033
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  9.     
 
 Accession number:  20105013479944
 
 Title:  Surface acoustic wave humidity microsensor based on electrospray polymer film
 
 Authors:  Guo, Xishan1 ; Lei, Sheng2 ; Li, Yang3 ; Zhu, Songming1 
 
 Author affiliation:  1  College of Biosystems Engineering and Food Science, Institute of Agricultural Bio-Environment and Energy Engineering, Zhejiang University, Hangzhou 310027, China
 
2  Biosensors National Special Laboratory, Zhejiang University, Hangzhou 310027, China
 
3  Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
 
 
 Corresponding author:  Guo, X. (guoxs@zju.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  104-107
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  A novel humidity microsensor with high sensitivity, short response time and good reproducibility was developed for measuring the plant leaf surface humidity. The sensor utilized single-port surface acoustic wave resonator (SAWR) with resonance frequency of 433 MHz as the basic component. The SAWR structure was fabricated on the ST-cut quartz substrate with a zero temperature coefficient to avoid temperature effect. The silicone-containing polyelectrolyte was electrosprayed onto the SAWR surface to form micro/nano-scale polymer particle clusters film as the humidity-sensitive material. The preliminary experimental results show that the humidity microsensor has a good performance with wide detection range from 10% to 97% RH, high sensitivity of 500 Hz/%RH, rapid response time of 5 s and up-to 3% RH measurement accuracy.
 
 Number of references:  14
 
 Main heading:  Atmospheric humidity
 
 Controlled terms:  Acoustic surface wave devices  -  Acoustic waves  -  Acoustics  -  Acoustoelectric effects  -  Chemical sensors  -  Humidity sensors  -  Microsensors  -  Polyelectrolytes  -  Polymer films  -  Quartz   -  Resonance  -  Silicones  -  Surfaces
 
 Uncontrolled terms:  Detection range  -  Electrosprays  -  High sensitivity  -  Measurement accuracy  -  Plant leaf  -  Polymer particles  -  Rapid response time  -  Reproducibilities  -  Resonance frequencies  -  SAWR   -  Sensitive materials  -  Short response time  -  Silicone-containing polyelectrolytes  -  ST-cut quartz  -  Surface acoustic wave resonators  -  Surface acoustic waves  -  Temperature effects  -  Zero temperature coefficients
 
 Classification code:  801 Chemistry  -  815.1 Polymeric Materials  -  816 Plastics and Other Polymers: Processing and Machinery  -  817 Plastics and Other Polymers: Products and Applications  -  817.1 Polymer Products  -  931 Classical Physics; Quantum Theory; Relativity  -  951 Materials Science  -  752.1 Acoustic Devices  -  443.1 Atmospheric Properties  -  482.2 Minerals  -  643 Space Heating, Ventilation and Air Conditioning  -  732 Control Devices  -  732.2 Control Instrumentation  -  751 Acoustics, Noise. Sound  -  751.1 Acoustic Waves
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.016
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  10.     
 
 Accession number:  20105013479955
 
 Title:  Orthogonal global-locally discriminant projection for plant leaf classification
 
 Authors:  Zhang, Shanwen1, 2 ; Ju, Chunfei1 
 
 Author affiliation:  1  Department of Engineering and Technology, Xijing University, Xi'an 710123, China
 
2  Institute of Intelligent Machines, Chinese Acad. of Sci., Hefei 230031, China
 
 
 Corresponding author:  Zhang, S. (wjdw716@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  162-166
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  A dimensional reduction method named orthogonal 'global-locally' discriminant projection (OGLDP) was proposed for plant leaf classification in this paper. Given a set of data points in the ambient space, a weight matrix was firstly built which describes the relationship between the data points. Then the between-class scatter matrix and locally structure matrix were constructed by making use of the class information and locally information of the data, which can 'push' the within-class data points closer together, while simultaneously 'pull' the between-class data points even more far from each other. This character is advantage to data classification. Finally, the optimal objective function was set up, which was solved by Lagrange multiplication. The experiment results of plant leaf classification show that OGLDP is effective and feasible.
 
 Number of references:  16
 
 Main heading:  Matrix algebra
 
 Uncontrolled terms:  Class information  -  Data classification  -  Data points  -  Dimensional reduction  -  Lagrange  -  Locally discriminant projections  -  Manifold learning  -  Objective functions  -  Plant leaf  -  Scatter matrix   -  Structure matrix  -  Weight matrices
 
 Classification code:  921.1 Algebra
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.027
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  11.     
 
 Accession number:  20105013479968
 
 Title:  Method of potato external defects detection based on fast gray intercept threshold segmentation algorithm and ten-color model
 
 Authors:  Li, Jinwei1 ; Liao, Guiping1 ; Jin, Jing1 ; Yu, Xiaojuan1 
 
 Author affiliation:  1  Institute of Agricultural Information, Hunan Agricultural University, Changsha 410128, China
 
 
 Corresponding author:  Liao, G. (lgpxf@yahoo.com.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  236-242
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Correct detection of external defects on potatoes is the key technology in the realization of automatic potato grading and sorting station. This paper reports a novel inspection approach to external defects of potato in three potato cultivars. Fast gray interception segmentation threshold method was proposed to extract the dark part of potato surface. Ten color model was used as color feature for defects detection. Area ratio and ten color ratio threshold were used to identify defects in the segmented dark part of potato surface. Fast interception segmentation based on G and Intensity was used to detect the sprouting potatoes. The tests were conducted with 652 double-faced images for 326 potato tubers. The recognition accuracy rate for the dark part of potato surface segemented, the sprouting potatoes and potatoes external defects detection was 93.6%, 97.5% and 95.7%, respectively. The results showed that the method was fast, valid and convenient for defect detection on yellow-skin potatoes.
 
 Number of references:  21
 
 Main heading:  Agricultural products
 
 Controlled terms:  Color  -  Computer vision  -  Image segmentation  -  Inspection  -  Plants (botany)  -  Surface defects
 
 Uncontrolled terms:  Area ratios  -  Color features  -  Color models  -  Color ratios  -  Defect detection  -  Defects detection  -  Key technologies  -  Potato cultivars  -  Potato tubers  -  Potatoes   -  Recognition accuracy  -  Segmentation threshold  -  Threshold segmentation
 
 Classification code:  951 Materials Science  -  913.3.1 Inspection  -  821.4 Agricultural Products  -  741.2 Vision  -  741.1 Light/Optics  -  461.9 Biology  -  421 Strength of Building Materials; Mechanical Properties
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.040
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  12.     
 
 Accession number:  20105013479962
 
 Title:  Estimation method of sugarcane leaf area index using HJ CCD images
 
 Authors:  Guo, Lin1 ; Pei, Zhiyuan1 ; Zhang, Songling1 ; Sun, Juanying1 ; Liang, Zili2 ; Teng, Dongjian2 
 
 Author affiliation:  1  Chinese Academy of Agricultural Engineering, Beijing 100125, China
 
2  The Office of Guangxi Agriculture and Economy Committee, Nanning 530022, China
 
 
 Corresponding author:  Pei, Z. (peizhiyuan@agri.gov.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  201-205
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  It is of great use for sugarcane growth monitoring and yield prediction to obtain leaf area index (LAI) in time with high accuracy. New estimation model based on support vector machine regression (SVR) was constructed by using new compounded kernel function. Taking the major county of sugarcane in Guangxi province as study area, three methods of index model, logarithm model and SVR were used to estimate sugarcane LAI, based on HJ CCD image and semi-Synchronous ground reference data. The experimental results showed that each of three methods could estimate LAI efficiently and got good estimation. It is indicated that HJ CCD image can be used for LAI estimation of vegetation and SVR can get the best estimation accuracy. Comparing with estimation results of index model and logarithm model, R2 of May were improved by 0.0252 and 0.0377 respectively, while R2 of December were improved by 0.0142 and 0.1021 respectively. The method can provide reference for later researches and applications in estimation of sugarcane LAI.
 
 Number of references:  19
 
 Main heading:  Estimation
 
 Controlled terms:  Algebra  -  Regression analysis  -  Support vector machines
 
 Uncontrolled terms:  CCD  -  CCD images  -  Estimation methods  -  Estimation models  -  Estimation results  -  Growth monitoring  -  Guangxi  -  HJ  -  Index models  -  Kernel function   -  Leaf area index  -  Logarithm model  -  Reference data  -  Study areas  -  Support vector machine regression (SVR)  -  Support vector machine regressions  -  Yield prediction
 
 Classification code:  723 Computer Software, Data Handling and Applications  -  921 Mathematics  -  921.1 Algebra  -  922.2 Mathematical Statistics
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.034
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  13.     
 
 Accession number:  20105013479986
 
 Title:  Identification of defect Pleurotus Geesteranus based on computer vision
 
 Authors:  Huang, Xingyi1 ; Jiang, Shuang1 ; Chen, Quansheng1 ; Zhao, Jiewen1 
 
 Author affiliation:  1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
 
 
 Corresponding author:  Huang, X. (h_xingyi@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  350-354
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  An identification method was developed to automatically recognize defect Pleurotus Geesteranus based on computer image processing technology. Seven feature parameters were extracted acording to investigation of shapes of Pleurotus Geesteranus, which were fractal dimension, relative length, roundness, shape factor, convexity of the pileus, aspect ratio, and crooked degree of the stipe. Subsequently, four feature parameters were further extracted by stepwise linear regression, which were fractal dimension, relative length, aspect ratio, and crooked degree of the stipe. Finally, support vector machine classifier was employed to build discrimination model, where four feature parameters selected were used as inputs vector. Recognition rate of model was 96.67%, when discrimination model was tested by some independent samples in the prediction set. This study demonstrates that it is feasible to identify defect Pleurotus Geesteranus using machine vision technique and provide technical support for on-line grading of Pleurotus Geesteranus.
 
 Number of references:  16
 
 Main heading:  Support vector machines
 
 Controlled terms:  Aspect ratio  -  Computer vision  -  Defects  -  Fractal dimension  -  Gears  -  Identification (control systems)  -  Imaging systems  -  Partial discharges  -  Vectors
 
 Uncontrolled terms:  Computer image processing  -  Discrimination model  -  Feature parameters  -  Identification  -  Identification method  -  Machine vision  -  Pleurotus  -  Recognition rates  -  Relative length  -  Shape factor   -  Stepwise linear regression  -  Support vector machines(SVM)  -  Technical support
 
 Classification code:  951 Materials Science  -  741 Light, Optics and Optical Devices  -  741.2 Vision  -  746 Imaging Techniques  -  921 Mathematics  -  921.1 Algebra  -  943 Mechanical and Miscellaneous Measuring Instruments  -  731.6 Robot Applications  -  723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  701.1 Electricity: Basic Concepts and Phenomena  -  601.2 Machine Components  -  423 Non Mechanical Properties and Tests of Building Materials  -  731.1 Control Systems
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.058
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  14.     
 
 Accession number:  20105013479958
 
 Title:  Shape feature selection and weed recognition based on image processing and ant colony optimization
 
 Authors:  Li, Xianfeng1, 2 ; Zhu, Weixing1 ; Ji, Bin1 ; Liu, Bo1 ; Ma, Changhua1 
 
 Author affiliation:  1  School of Electronic and Information Engineering, Jiangsu University, Zhenjiang 212013, China
 
2  School of Information Engineering, Yancheng Institute of Technology, Yancheng 224051, China
 
 
 Corresponding author:  Zhu, W. (wxzhu@ujs.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  178-182
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Using shape features of plant leaf to identify the weed from the crop is an important method for weed recognition. In order to improve the accuracy and efficiency, overlapped leaves were separated through morphology operation and threshold segmentation based on distance transformation, and 17 shape features including geometric features and moment invariant features were extracted from the single leaf. Finally, ant colony optimization (ACO) algorithm and support vector machine (SVM) classifier were used to feature selection and weed recognition so as to select more superior features and optimize features combination. The recognition experiment for weed in cotton field demonstrates that this method can reduce the number of features effectively and the accuracy is over 95% by using optimized feature subset. The results show that the proposed method has good performance on accuracy and stability, and can be reference for quick and accurate identifying of weeds.
 
 Number of references:  14
 
 Main heading:  Feature extraction
 
 Controlled terms:  Algorithms  -  Artificial intelligence  -  Image processing  -  Imaging systems  -  Mathematical transformations  -  Optimization  -  Support vector machines
 
 Uncontrolled terms:  Ant Colony Optimization algorithms  -  Ant-colony optimization  -  Distance transformation  -  Feature selection  -  Feature subset  -  Geometric feature  -  Moment invariant  -  Morphology operations  -  Plant leaf  -  Shape features   -  Superior feature  -  Threshold segmentation
 
 Classification code:  921.5 Optimization Techniques  -  921.3 Mathematical Transformations  -  746 Imaging Techniques  -  741 Light, Optics and Optical Devices  -  723.4 Artificial Intelligence  -  723 Computer Software, Data Handling and Applications  -  716 Telecommunication; Radar, Radio and Television
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.030
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  15.     
 
 Accession number:  20105013479979
 
 Title:  Cultivated land quality change and its future trend modeling in Beijing mountainous area
 
 Authors:  Jiang, Guanghui1, 2 ; Zhao, Tingting3 ; Duan, Zengqiang3 ; Zhang, Fengrong3 ; Huo, Huige1, 2 ; Tan, Xuejing1, 2 
 
 Author affiliation:  1  State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing 100875, China
 
2  College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China
 
3  Department of Land Resources Management, China Agricultural University, Beijing 100093, China
 
 
 Corresponding author:  Duan, Z. (duanzq@cau.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  304-311
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  This paper analyzed the cultivated land quality and its future trend on the basis of cultivated land quality evaluation, which is of great significance to realize the managements of cultivated land from emphasizing on its quantity unilaterally to on its quantity and quality comprehensively. Methods of GIS spatial analysis and scenario modeling by CA-Markov model were employed. The results indicated that cultivated land quality took on an increasing trend both in mountainous area as a whole and three types of physiognomy areas from 1993 to 2004, and the trend was got mainly by the optimization of cultivated land layout. Moreover, from the result of scenario modeling, the cultivated land quality continued to increase from 2004 to 2015, but the increment got smaller. Also the cultivated land quality change became to differentiation at different types of physiognomy, where the quality increased at mountainous area and semi-mountainous area while decreased at plainous area. In the future, some measures should be carried out to protect and improve the cultivated land quality. Firstly, the layout optimization of cultivated land should be looked as an important way to protect land quality besides the fertility increase. Secondly, the site plot of newly increased cultivated land should be examined carefully to guarantee its quality. Thirdly, the quality protection and quantity protection should be considered as a whole, and the economic methods should be implemented to reinforce the quality protection of cultivated land.
 
 Number of references:  26
 
 Main heading:  Quality control
 
 Controlled terms:  Land use  -  Markov processes  -  Optimization  -  Planning  -  Regional planning
 
 Uncontrolled terms:  Change  -  Cultivated lands  -  Future trends  -  Land quality  -  Layout optimization  -  Markov model  -  Mountainous area  -  Spatial analysis
 
 Classification code:  403 Urban and Regional Planning and Development  -  403.2 Regional Planning and Development  -  913.3 Quality Assurance and Control  -  921.5 Optimization Techniques  -  922.1 Probability Theory
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.051
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  16.     
 
 Accession number:  20105013479950
 
 Title:  Design and experiment of monitoring system for heat pump dryer of enclosed cycles
 
 Authors:  Ni, Chao1 ; Li, Juanling1 ; Ding, Weimin1 ; Fan, Hailiang1 ; Chen, Shanlin1 
 
 Author affiliation:  1  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
 
 
 Corresponding author:  Li, J. (juanlingli@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  134-139
 
 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:  Aimed at improving the monitoring process as well as the accuracy and efficiency of drying experiments, reducing labour intensity and supporting the latter data analysis, the subject combined the heat pump drying technology with automatic detection and SCADA technology to establish a precise monitoring system of heat pump dryer. The system is mainly consisted of heat pump drying equipment, data acquisition and monitoring system. The drying process is finished by a completely closed heat pump dryer. The data acquisition system gathers the drying field data, OPC server will access data by the communication protocol. Monitoring system is mainly with functions of PLC automatic control and PC monitoring. The experiments show that the system can perform well in high precision temperature and humidity control, it is also with the functions of real-time data display and archiving, information alarm, etc. It can be used as an experimental platform for later researches.
 
 Number of references:  21
 
 Main heading:  Heat pump systems
 
 Controlled terms:  Automation  -  Communication  -  Control  -  Curing  -  Dryers (equipment)  -  Drying  -  Experiments  -  Humidity control  -  Patient monitoring  -  Pumps   -  Technology
 
 Uncontrolled terms:  Automatic control  -  Automatic Detection  -  Communication protocols  -  Data acquisition system  -  Data analysis  -  Drying process  -  Experimental platform  -  Field data  -  Heat pump dryer  -  Heat pump drying   -  High precision  -  Labour intensity  -  Monitoring process  -  Monitoring system  -  OPC server  -  PLC control  -  Precise monitoring  -  Real-time data  -  SCADA technology  -  Temperature and humidity control
 
 Classification code:  901 Engineering Profession  -  815.1 Polymeric Materials  -  802.1 Chemical Plants and Equipment  -  732 Control Devices  -  731 Automatic Control Principles and Applications  -  901.3 Engineering Research  -  716 Telecommunication; Radar, Radio and Television  -  641.2 Heat Transfer  -  618.2 Pumps  -  462.2 Hospitals, Equipment and Supplies  -  402 Buildings and Towers  -  642.1 Process Heating
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.022
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  17.     
 
 Accession number:  20105013479975
 
 Title:  Biogas production potential and characteristics of manure of sheep, duck and rabbit under anaerobic digestion
 
 Authors:  Song, Li1 ; Deng, Liangwei1 ; Yin, Yong2 ; Pu, Xiaodong1 ; Wang, Zhiyong1 
 
 Author affiliation:  1  Biogas Scientific Research Institute of the Ministry of Agriculture, Chengdu 610041, China
 
2  Rural Energy Office of Sichuan Province, Chengdu 610041, China
 
 
 Corresponding author:  Deng, L. (dlwbrtc@yahoo.com.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  277-282
 
 Language:  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 biogas production potential of sheep manure, duck manure and rabbit manure for anaerobic digestion and their characteristics, taking the three kinds of manure as the digestion material and the self-culture anaerobic sludge as the inoculation substances, under three different temperatures of (35±1)°C, (25±1)°C and normal temperature (9-19°C), the experiments of anaerobic digestion of sequencing batch reactor were conducted. The biogas production rate, biogas yield, variations of pH value and variations of methane concentration with different pH, and the removal efficiency of COD and NH4+-N of wastewater of three kinds of manure were studied. The results showed that at (35±1)°C, biogas production potential of material (TS) was 0.273 m3/kg for sheep manure, 0.441 m3/kg for duck manure, and 0.210 m3/kg for rabbit manure. At (25±1)°C, biogas production potential (TS) of material was 0.206 m3/kg for sheep manure, 0.359 m3/kg for duck manure, and 0.174 m3/kg for rabbit manure. At normal temperature, biogas production potential of material (TS) was 0.082 m3/kg for duck manure, and 0.098 m3/kg for rabbit manure. Three kinds of feedstocks could achieve pH self-balancing at startup of anaerobic fermentation fed with adequate anaerobic sludge. Anaerobic digestion could evidently remove COD of three kinds of manure, but it could not decrease NH4+-N.
 
 Number of references:  17
 
 Main heading:  Anaerobic digestion
 
 Controlled terms:  Batch reactors  -  Biogas  -  Fertilizers  -  Manures  -  Methanation  -  Methane  -  Removal  -  Sludge digestion  -  Wastewater  -  Wool
 
 Uncontrolled terms:  Anaerobic fermentation  -  Anaerobic sludge  -  Biogas production  -  Biogas production rate  -  COD  -  Duck manure  -  Methane concentrations  -  NH4+-N  -  pH value  -  Removal efficiencies   -  Self-balancing  -  Sequencing batch reactors  -  Sheep manure
 
 Classification code:  452.2 Sewage Treatment  -  452.3 Industrial Wastes  -  522 Gas Fuels  -  802 Chemical Apparatus and Plants; Unit Operations; Unit Processes  -  804 Chemical Products Generally  -  819.1 Natural Fibers
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.047
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  18.     
 
 Accession number:  20105013479978
 
 Title:  National agricultural land grading distribution law based on conversion from provincial level to national level in Chongqing
 
 Authors:  Zhang, Qingpu1 ; Kong, Xiangbin1 ; Yun, Wenju2 ; Su, Qiang2 ; Huang, Jialin3 ; Zhang, Xiaocheng3 ; Li, Tao1 
 
 Author affiliation:  1  College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
 
2  Land Consolidation Center of National Land and Resources Ministry, Beijing 100035, China
 
3  Land Survey and Planning Institute of Chongqing City, Chongqing 400015, China
 
 
 Corresponding author:  Kong, X. (kxb@cau.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  297-303
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  This study was to validate the correctness of the national agricultural land grading integrated method, and the correlation of integrated national agricultural land grading with provincial natural factors. With the statistic and comprehensive analysis, we took Chongqing provincial agricultural land grading achievements as a case to analyze the national agricultural land grading distribution law. The results showed that the different agricultural land grading area rate of the national level was similar to that of the provincial level grading, after provincial fruits was converted into national fruits, in addition, the national agricultural land grading integrated method based on the land productivity was valid. The results also showed that the national irrigated land natural, use and economic grading were higher than that of dryland within the same standard cropping system. Compared with the different standard cropping system, the average national agricultural land grading in Yuxi low hill area and Yudong middle mountain were higher than that in Yuzhong low mountain and Yudongbei middle mountain. The national agricultural land grading was positive correlation with such natural factors as soil depth and soil organic matter contents, but was negative correlation with elevation. The national agricultural land grading distribution law not only inherited the order of the provincial agricultural land grading, but also in accord with the agricultural land productivity. The national agricultural land integrating method provides a scientific basis for the agricultural fruits conversion from provincial level to national level.
 
 Number of references:  15
 
 Main heading:  Grading
 
 Controlled terms:  Agriculture  -  Fruits  -  Integrated control  -  Integration  -  Landforms  -  Productivity  -  Soils  -  Water management
 
 Uncontrolled terms:  Agricultural land  -  AS-soils  -  Chongqing  -  Comparison  -  Comprehensive analysis  -  Conversion  -  Cropping systems  -  Distribution law  -  Dryland  -  Integrated method   -  Irrigated lands  -  Low-hill area  -  Middle mountains  -  National level  -  Natural factors  -  Negative correlation  -  Positive correlations  -  Soil organic matter contents
 
 Classification code:  913.3 Quality Assurance and Control  -  913.1 Production Engineering  -  821.4 Agricultural Products  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  921.2 Calculus  -  731.1 Control Systems  -  481.1 Geology  -  446 Waterworks  -  444 Water Resources  -  483.1 Soils and Soil Mechanics
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.050
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  19.     
 
 Accession number:  20105013479941
 
 Title:  Tomato irrigation index for soil water leakage control in greenhouse
 
 Authors:  Fan, Fengcui1, 2 ; Zhang, Lifeng1 ; Li, Zhihong2 ; Shi, Yufang2 ; Gao, Lihong3 ; Yan, Taixiang1 ; Jia, Jianming2 
 
 Author affiliation:  1  Agronomy College of Hebei Agricultural University, Hebei Baoding 071001, China
 
2  Agricultural Information and Economic Research Institute, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China
 
3  College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
 
 
 Corresponding author:  Fan, F. (nkylzh@126.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  83-89
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Aimed at the problems of water and fertilizer leakage that induced by irrigation in vegetable field, root distribution under three irrigation methods and soil water dynamics and leakage from root intensive layers under different irrigation amount water supply were studied by combination of the field experiments and laboratory analysis in tomato field in greenhouse. The results show that the root intensive layer of tomato is the 0-40 cm, the deepest root level is 60 cm. Within the range of 7.5-22.5 mm irrigation water supply, the water distribution decreases progressively along the depth of the soil. Meanwhile, within the range of 7.5-45 mm irrigation water supply, the relationship between irrigation supply and soil water leakage from the intensive root layers has linear correlation. As a result, the indicated parameter is identified in 15.0-22.5 mm for irrigation water leakage control in tomato flowering, fruiting and harvest period. The index can provide reference for integrated management of the root-water-fertilizer system of shallow rooted vegetables.
 
 Number of references:  28
 
 Main heading:  Irrigation
 
 Controlled terms:  Fertilizers  -  Fruits  -  Greenhouses  -  Soil moisture  -  Soil surveys  -  Underwater soils  -  Vegetables  -  Water supply  -  Water supply systems
 
 Uncontrolled terms:  Field experiment  -  Integrated management  -  Irrigation methods  -  Irrigation water supply  -  Irrigation waters  -  Laboratory analysis  -  Leakage  -  Linear correlation  -  Root distribution  -  Soil water   -  Soil water dynamics  -  Tomato  -  Tomato fields  -  Vegetable Field  -  Water distributions
 
 Classification code:  446.1 Water Supply Systems  -  483.1 Soils and Soil Mechanics  -  804 Chemical Products Generally  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.013
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  20.     
 
 Accession number:  20105013479964
 
 Title:  Extracting phaeozem information in Songliao Plain based on remote sensing and GIS
 
 Authors:  Xing, Yu1 ; Jiang, Qigang1 ; Li, Yuanhua1 ; Cui, Hanwen1 ; Lin, Nan1 
 
 Author affiliation:  1  College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China
 
 
 Corresponding author:  Jiang, Q. (jiangqigang@jlu.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  212-217
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to protect and make sustainable use of phaeozem resources, based on ASTER data, the organic matter content information of phaeozem was quantitatively obtained by using multiple stepwise regression method and meanwhile, decision-binary tree method and DEM data were adopted to extract the phaeozem information in Songliao Plain. The results showed that ASTER data could be used to extract related information about phaeozem quickly and efficiently. When the soil organic matter content was less than 2%, the model estimation accuracy could not meet the need because of the soil reflective properties. With the help of GIS, auxiliary information could improve the precision of phaeozem extraction and make the phaeozem information more accurate and reliable. The phaeozem primarily lied in the area from Heihe City in the north to Changtu Country in the south and covered an area about 51360.15 km2 in Songliao Plain. The area of phaeozem in Heilongjiang, Jilin, Liaoning Province were decreasing correspondingly with the size of 35377.43, 12511.71 and 2775.46 km2, respectively. And the phaeozem organic matter content is gradually increasing along with latitude and longitude becoming high. The study is of great significance for rapid extraction of phaeozem information, protection and sustainable use of phaeozem resources as well as sustainable development of regional agriculture.
 
 Number of references:  15
 
 Main heading:  Geographic information systems
 
 Controlled terms:  Binary trees  -  Biogeochemistry  -  Biological materials  -  Boundary conditions  -  Geologic models  -  Information systems  -  Organic compounds  -  Remote sensing  -  Soils  -  Trees (mathematics)
 
 Uncontrolled terms:  Geographic information  -  Organic matter  -  Phaeozem  -  Quantitative analysis  -  Songliao Plain
 
 Classification code:  921 Mathematics  -  903.2 Information Dissemination  -  804.1 Organic Compounds  -  731.1 Control Systems  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  723.3 Database Systems  -  481.2 Geochemistry  -  481.1 Geology  -  461.2 Biological Materials and Tissue Engineering  -  483.1 Soils and Soil Mechanics
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.036
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  21.     
 
 Accession number:  20105013479973
 
 Title:  Effects of waste heat and microbial agents on composting efficiency and greenhouse gas emissions reduction of municipal solid wastes
 
 Authors:  Gao, Dan1 ; Zhang, Hongyu1 ; Li, Guoxue1 ; Jiang, Tao1 ; Deng, Hui1 ; Zhang, Wei1 
 
 Author affiliation:  1  College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
 
 
 Corresponding author:  Li, G. (ligx@cau.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  264-271
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to discuss the effect of exogenous microbial agents and hot air recycling on composting cycle of municipal solid waste, 15-80 mm sieved of municipal solid waste were used as raw material throughout the experiments, and the closed static high-temperature fermentation technology was conducted with forcibly aeration. The new technology of exogenous microbial agents and hot recycling composting was investigated and compared with the current technology without adding exogenous microbial agents and hot air recycling composting. The results showed that, after adding exogenous microbial agents and with hot air recycling, 1-2 d was shorten to reach 55°C, high-temperature composting time was 7 d and the whole composting cycle was shorten to 27 d. Calculated by 600 t/d disposal capacity, the emissions of greenhouse gas with exogenous microbial agents and hot air recycling was reduced by 10150.65 t CO2-equivalent per year than before. Besides, the daily working composting cells was increased from 3 to 4, and the disposal capacity could reach 800 t/d accordingly. Therefore, exogenous microbial agents and hot air recycling can greatly improve composting efficiency and reduce greenhouse gas emissions of municipal solid waste compost.
 
 Number of references:  18
 
 Main heading:  Gas emissions
 
 Controlled terms:  Composting  -  Emission control  -  Global warming  -  Greenhouse gases  -  Industrial waste treatment  -  Recycling  -  Solid wastes  -  Waste heat
 
 Uncontrolled terms:  Composting cell  -  Current technology  -  Emissions reduction  -  Greenhouse gas emissions reductions  -  High temperature  -  Hot air  -  Hot-recycling  -  Microbial agents  -  Municipal Solid Waste  -  Municipal solid waste compost   -  New technologies
 
 Classification code:  451 Air Pollution  -  452 Municipal and Industrial Wastes; Waste Treatment and Disposal  -  643.1 Space Heating
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.045
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  22.     
 
 Accession number:  20105013479987
 
 Title:  Detection of foreign materials on the surface of ginned cotton by hyper-spectral imaging
 
 Authors:  Guo, Junxian1, 2 ; Ying, Yibin1 ; Cheng, Fang1 ; Kang, Yuguo3 ; Li, Futang3 ; Rao, Xiuqin1 
 
 Author affiliation:  1  College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
 
2  Mechanical and Traffic College, Xinjiang Agricultural University, Urumqi 830052, China
 
3  China Cotton Machinery and Equipment Limited Company, Beijing 100089, China
 
 
 Corresponding author:  Rao, X. (xqrao@zju.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  355-360
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to investigate the potential for detecting multi-foreign materials on the surface of ginned cotton by hyper-spectral imaging, and also to provide the research basis for applying this imaging to evaluate cotton quality or to sort the trashes in line, cotton hyper-spectral images with multi-foreign materials were acquired in the reflection mode. Optimal waveband images for the detection of each foreign material were transformed into fusion images using wavelets transformation or averaging operator, respectively. The optimal images for the ultimate segmentation of foreign materials were selected from four types of the best potential principal components scores image, independent components scores image, fusion images of gray averaging and wavelets transformation. The classification tree and optimal subset of region features were developed to classify each region of binary images into the groups of foreign-objects or non-foreign-objects, so as to eliminate all the noise and the false positives. The recognition rates of foreign materials by using the discriminate rule of targets in the training and testing sets were up to 84.09% and 75.86%, respectively. The results show that the hyper-spectral imaging system in line scanning mode has the potential for the detection of coexistence foreign materials. In the testing set, all of black hairs, gray and white polypropylene fibers were detected while none of white hairs was detected.
 
 Number of references:  27
 
 Main heading:  Materials testing
 
 Controlled terms:  Cotton  -  Image fusion  -  Image segmentation  -  Materials  -  Optimization  -  Pattern recognition  -  Wavelet transforms
 
 Uncontrolled terms:  Classification  -  Detection  -  Foreign materials  -  Ginned cotton  -  Hyperspectral Imaging
 
 Classification code:  716 Telecommunication; Radar, Radio and Television  -  723.2 Data Processing and Image Processing  -  819.1 Natural Fibers  -  921.3 Mathematical Transformations  -  921.5 Optimization Techniques  -  951 Materials Science
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.059
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  23.     
 
 Accession number:  20105013479974
 
 Title:  Spectroscopic characteristics comparison of conventional fluorescence of dissolved organic matter with solid surface fluorescence during composting
 
 Authors:  He, Xiaosong1, 2 ; Xi, Beidou2 ; Wei, Zimin3 ; Li, Mingxiao2 ; An, Da1, 2 ; Yu, Hong2 ; Liu, Hongliang2 
 
 Author affiliation:  1  School of Environment, Beijing Normal University, Beijing 100875, China
 
2  Laboratory of Water Environmental System Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
 
3  College of Life Science, Northeast Agricultural University, Harbin 150030, China
 
 
 Corresponding author:  Xi, B. (xibeidou@263.net) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  272-276
 
 Language:  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 the purpose of identifying the ability whether solid surface fluorescence of original compost can be used to characterize the composition and transformation of organic matter during composting, dissolved organic matter and the original compost samples at different stages during composting were obtained. The changes of carbon contents of two kinds of materials, the conventional fluorescence spectroscopy of dissolved organic matter and the solid surface fluorescence of original compost samples were analyzed. The results showed that the proportion of dissolved organic matter to total organic matter persisted to drop during the process; and the value decreased to 5.1 g/kg after 40 days composting. The fluorescence intensity of conventional fluorescence emission and excitation spectra increased during composting, while only the fluorescence peak intensity of humus-like matter in the synchronous fluorescence spectra increased. The intensity of the solid surface fluorescence of original compost sample in emission, excitation and synchronous scan mode all persisted to drop along during composting. In all three kinds of fluorescence scan modes, synchronous fluorescence spectroscopy were similar both in dissolved organic matter and original compost samples, the humic-like and protein-like fluorescence appeared both in dissolved organic matter and solid samples. The results demonstrate that the synchronous scan mode of solid surface fluorescence of original compost can be used to characterize the composition and transformation of organic matter during composting.
 
 Number of references:  16
 
 Main heading:  Biological materials
 
 Controlled terms:  Biogeochemistry  -  Composting  -  Dissolution  -  Drops  -  Fluorescence  -  Fluorescence spectroscopy  -  Organic compounds  -  Soils  -  Surfaces
 
 Uncontrolled terms:  Carbon content  -  Compost  -  Dissolved organic matters  -  Excitation spectrum  -  Fluorescence emission  -  Fluorescence intensities  -  Fluorescence peak  -  Organic matter  -  Scan mode  -  Solid samples   -  Solid surface  -  Solid surface fluorescence  -  Spectroscopic characteristics  -  Synchronous fluorescence  -  Synchronous fluorescence spectroscopy  -  Total organic matter
 
 Classification code:  931 Classical Physics; Quantum Theory; Relativity  -  804.1 Organic Compounds  -  802.3 Chemical Operations  -  741.3 Optical Devices and Systems  -  951 Materials Science  -  741.1 Light/Optics  -  481.2 Geochemistry  -  461.2 Biological Materials and Tissue Engineering  -  452 Municipal and Industrial Wastes; Waste Treatment and Disposal  -  483.1 Soils and Soil Mechanics
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.046
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  24.     
 
 Accession number:  20105013479929
 
 Title:  Agricultural influences on evaporation paradox in China
 
 Authors:  Han, Songjun1, 2 ; Wang, Shaoli1, 2 ; Yang, Dawen3 
 
 Author affiliation:  1  Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China
 
2  National Center of Efficient Irrigation Engineering and Technology Research, Beijing 100048, China
 
3  State Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China
 
 
 Corresponding author:  Han, S. (hansj@iwhr.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  1-8
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  The air temperature increased and the pan evaporation decreased from 1960 to 2001 in China, and the evaporation paradox exist. Using the data from 251 meteorological stations in regions without significant agricultural influences and from 165 meteorological stations in regions with significant agricultural influences divided by land use, the trends of pan evaporations and air temperature changes from 1960 to 2001 were evaluated contrastively. The differences of evaporation paradox in regions with different agricultural influences in China were analyzed. The increasing trends of air temperature over meteorological stations in regions with significant agricultural influences were weaker than that in regions without significant agricultural influences, while the pan evaporation appeared decreasing trends, and the differences were more obvious in arid or semi-arid areas in North China. The differences of evaporation paradox over different agricultural regions were influenced by agricultural activities such as irrigation, and should be taken into account.
 
 Number of references:  36
 
 Main heading:  Climate change
 
 Controlled terms:  Arid regions  -  Atmospheric temperature  -  Evaporation  -  Meteorology
 
 Uncontrolled terms:  Agricultural activities  -  Agricultural influence  -  Air temperature  -  Air temperature changes  -  Meteorological station  -  North China  -  Pan evaporation  -  Semiarid area
 
 Classification code:  443 Meteorology  -  443.1 Atmospheric Properties  -  802.3 Chemical Operations
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.001
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  25.     
 
 Accession number:  20105013479966
 
 Title:  Agricultural environment real-time monitor and control system based on 6LoWPAN sensor networks
 
 Authors:  Wang, Xiaonan1 ; Yin, Xudong1 
 
 Author affiliation:  1  Changshu Institute of Technology, Changshu 215500, China
 
 
 Corresponding author:  Wang, X. (wxn_2001@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  224-228
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to make up for deficiencies in the current agricultural environment monitor and control systems, the paper proposed an agricultural environment real-time monitor and control system based on 6LoWPAN sensor networks. The 6LoWPAN architecture is adopted in the system to achieve the end-to-end communication between the Internet and the sensor networks without a specific gateway to perform the protocol conversion or the protocol bearing, so that the real-time monitor and control of the agricultural environment can be accomplished. The system can reduce the power consumption and shorten the delay time. From the perspectives of hardware, software and power consumption, the system was expounded and analyzed in detail. The experiment results proved the system's practicability and efficiency and the system can be effectively applied to greenhouse, cropland, and nursery garden, etc.
 
 Number of references:  19
 
 Main heading:  Gateways (computer networks)
 
 Controlled terms:  Control theory  -  Environmental management  -  Internet  -  Internet protocols  -  Monitoring  -  Network architecture  -  Network management  -  Real time systems  -  Remote control  -  Sensor networks   -  Telecommunication systems
 
 Uncontrolled terms:  6LoWPAN  -  Agricultural  -  Agricultural environments  -  Delay Time  -  End-to-End communication  -  Environment management system  -  Gateway  -  Power Consumption  -  Protocol conversion  -  Real-time monitor   -  System-based
 
 Classification code:  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  731.1 Control Systems  -  723 Computer Software, Data Handling and Applications  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  722.4 Digital Computers and Systems  -  718 Telephone Systems and Related Technologies; Line Communications  -  717 Optical Communication  -  716 Telecommunication; Radar, Radio and Television  -  454.1 Environmental Engineering, General  -  722 Computer Systems and Equipment
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.038
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  26.     
 
 Accession number:  20105013479934
 
 Title:  State-space simulation of soil surface water content in grassland of northern Loess Plateau
 
 Authors:  Jia, Xiaoxu1, 2 ; Shao, Ming'an2, 3 ; Wei, Xiaorong1, 2 ; Li, Xuezhang1, 2 
 
 Author affiliation:  1  College of Resources and Environment, Northwest Sci.-Technol. University of Agriculture and Forestry, Yangling 712100, China
 
2  State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest Sci.-Technol. University of Agriculture and Forestry, Yangling 712100, China
 
3  Institute of Geographical Sciences and Natural Resources Research, Chinese Acad. of Sci., Beijing 100101, China
 
 
 Corresponding author:  Shao, M. (mashao@ms.iswc.ac.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  38-44
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to understand the spatial distribution of soil surface water content and its relations with environmental factors in grassland of the northern Loess Plateau, the autoregressive state-space models and classical linear regression models were used, to simulate the spatial distribution of soil surface water content in a grassland of the northern Loess Plateau, based on the saturated soil hydraulic conductivity (Ks), soil surface temperature (T), elevation (E) and litter mass (L). The results showed that state-space models could be applied to the wind and water erosion transitional area of the Loess Plateau where landscape factors varied greatly and the state-space models were consistently more effective than linear regression models. Among the mono-variable state-space models, Ks based models showed the best simulation result (R2 = 0.936). Among the multi-variable state-space models, Ks, E and L included model showed the best simulation result (R2 = 0.976), and the combination of such variables based models provided the best approach to explain the spatial variation of soil surface water content. State-space models are recommended for studying spatial relations between soil surface water content and other variables in the wind and water erosion transitional area of the Loess Plateau.
 
 Number of references:  24
 
 Main heading:  Geologic models
 
 Controlled terms:  Computer simulation  -  Erosion  -  Moisture determination  -  Regression analysis  -  Soil moisture  -  State space methods  -  Surface waters  -  Water content
 
 Uncontrolled terms:  Auto-regressive  -  Classical statistics  -  Environmental factors  -  Linear regression models  -  Loess Plateau  -  Multi variables  -  Saturated soils  -  Simulation  -  Simulation result  -  Soil surface temperatures   -  Soil surfaces  -  Spatial distribution  -  Spatial relations  -  Spatial variations  -  State space  -  State-space models  -  Water erosion
 
 Classification code:  922.2 Mathematical Statistics  -  921 Mathematics  -  723.5 Computer Applications  -  483.1 Soils and Soil Mechanics  -  944.2 Moisture Measurements  -  483 Soil Mechanics and Foundations  -  444.1 Surface Water  -  444 Water Resources  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  481.1 Geology
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.006
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  27.     
 
 Accession number:  20105013479981
 
 Title:  Suitability evaluation of land cultivation in desertification region with different policies
 
 Authors:  He, Yingbin1, 2, 3 ; Tang, Huajun3 ; Yang, Peng3 ; Yao, Yanmin1, 3 ; Chen, Youqi1, 3 ; Chen, Zhongxin1, 3 ; Li, Jianping3 
 
 Author affiliation:  1  Key Laboratory of Resources Remote Sensing and Digital Agriculture, Beijing 100081, China
 
2  Hulunber Grassland Ecosystem Observation and Research Station, Beijing 100081, China
 
3  Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
 
 
 Corresponding author:  Tang, H. (hjtang@mail.caas.net.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  319-324
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to make up for the lack of evaluation index system of land cultivation suitability for expressing farmers' inclination and ecological limiting factors, the land cultivation suitability evaluation for the desertification regions of China was implemented by applying index system based on ecological restriction factors. The results showed that: with policy scenario of food security, the areas with high-level suitability for land cultivation concentrated on the part of the sub-humid and semi-arid areas with the total area of about 37×104 km2. With policy scenario of ecology and environmental protection, the areas with high-level land suitability for cultivation concentrated on the South Inner Mongolia, the South Tibet and the North Xinjiang Municipality with the total area of about 26.9×104 km2. Since the setting of the different policy scenarios, the reduction regions of high-level land suitability spatially distributed in the eastern parts of the Inner Mongolia and the southern parts of Tibet. This study explored the method for land suitability at large scale and multi-index system, especially application of ecological limiting factors with different policies.
 
 Number of references:  13
 
 Main heading:  Ecology
 
 Controlled terms:  Arid regions  -  Climatology  -  Food supply  -  Land use  -  Planning  -  Regional planning
 
 Uncontrolled terms:  Desertification region  -  Evaluation index system  -  Food security  -  Index systems  -  Inner Mongolia  -  Land suitability  -  Limiting factors  -  Multi-index  -  Policy scenario  -  Semiarid area   -  Sub-humid  -  Suitability evaluation  -  Xinjiang
 
 Classification code:  403 Urban and Regional Planning and Development  -  403.2 Regional Planning and Development  -  404.2 Civil Defense  -  443 Meteorology  -  454.3 Ecology and Ecosystems
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.053
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  28.     
 
 Accession number:  20105013479946
 
 Title:  Simulation and analysis of movement of rice seedlings passing through separating chutes
 
 Authors:  Ma, Ruijun1, 2 ; Wang, Kaizhan3 ; Ma, Xu1, 2 ; Zhang, Yali1, 2 
 
 Author affiliation:  1  College of Engineering, South China Agriculture University, Guangzhou 510642, China
 
2  Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
 
3  Communications Commission of Guangzhou Municipality, Guangzhou 510032, China
 
 
 Corresponding author:  Ma, R. (maruijun_mrj@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  113-118
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to understand the performance of designed separating chutes, the movement of rice seedlings passing through separating chutes was simulated based on Pro/E and ADMAS software. Two nutrient soil bowl models of rice seedlings, a sphere model and a real size model were developed. The results show that the velocity, acceleration and contacting force have sudden changes when rice seedlings pass through the arc sections of the chutes. The longest time is 0.633 s (chute 1) and the shortest time is 0.463 s (chute 6) when rice seedlings pass through a group of seven chutes. It has no much difference in the performance of rice seedlings passing through chutes when the posture of chutes is tilt of 2° and in vertical. The movement trajectory of seven rice seedlings in seven chutes at different time points was obtained by the virtual simulation of a computer. Furthermore, the distribution of rice seedlings after passing through two groups of chutes was also simulated when the machine was moving forward with the velocity of 0.3 m/s. The research can provide valuable reference data for the optimal design of the device and the experimental work in the future.
 
 Number of references:  13
 
 Main heading:  Seed
 
 Controlled terms:  Computer simulation  -  Geologic models  -  Spheres
 
 Uncontrolled terms:  ADAMS  -  Contacting force  -  Experimental works  -  Movement trajectories  -  Optimal design  -  Reference data  -  Rice seedlings  -  Separating chutes  -  Simulation  -  Simulation and analysis   -  Sphere model  -  Sudden change  -  Through the arcs  -  Time points  -  Virtual simulations
 
 Classification code:  481.1 Geology  -  631 Fluid Flow  -  723.5 Computer Applications  -  821.4 Agricultural Products
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.018
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  29.     
 
 Accession number:  20105013479983
 
 Title:  Accuracy and efficiency of different spatial sampling schemes for cropland change monitoring
 
 Authors:  Liu, Jianhong1 ; Zhu, Wenquan1 
 
 Author affiliation:  1  State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China
 
 
 Corresponding author:  Zhu, W. (zhuwq75@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  331-336
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Previous researches have proved the feasibility of monitoring cropland changes using spatial sampling methods. However, how to improve efficiency and reduce cost by designing an optimal spatial sampling scheme is a key issue. Six sampling schemes were designed by combining three sampling methods (simple random sampling, stratified sampling and systematic sampling) with two sampling frames (regular frame and irregular frame) and their accuracy and efficiency were tested, based on the relationship between the average survey cost per sample and the practice factor of sampling frame. A case study in Shunyi District, Beijing, was carried out to test the validity of the optimal spatial sampling scheme. Results indicated that the stratified sampling with irregular frame scheme could achieve high sampling accuracy and efficiency for cropland change monitoring. Further sensitivity analysis showed that this scheme could be applied to different regions in despite of the variation of cropland change magnitude. The degree of cropland change has little effect on the estimation accuracy of sampling. Moreover, the sampling accuracy of this scheme is insensitive to remote sensing image interpretation accuracy. When the later is above 80%, the former remains above 90% steadily. This extends the application flexibility of the stratified sampling with irregular frame for cropland change monitoring.
 
 Number of references:  18
 
 Main heading:  Sampling
 
 Controlled terms:  Image reconstruction  -  Optimization  -  Remote sensing  -  Sensitivity analysis  -  Surveys
 
 Uncontrolled terms:  Cropland change  -  Key issues  -  Optimal spatial sampling  -  Remote sensing images  -  Sampling efficiency  -  Sampling method  -  Sampling schemes  -  Shunyi District  -  Simple random sampling  -  Spatial sampling   -  Stratified sampling  -  Systematic sampling
 
 Classification code:  405.3 Surveying  -  731.1 Control Systems  -  741 Light, Optics and Optical Devices  -  801 Chemistry  -  921.5 Optimization Techniques
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.055
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  30.     
 
 Accession number:  20105013479935
 
 Title:  Dynamic process simulation model for soil erosion of small-scale watershed system
 
 Authors:  Gao, Peiling1, 2 ; Lei, Tingwu2, 3 
 
 Author affiliation:  1  College of Resource and Environment Engineering, Shandong University of Technology, Zibo 255049, China
 
2  State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Acad. of Sci., Yangling 712100, China
 
3  College of Hydraulic and Civil Engineering, China Agricultural University, Beijing 100083, China
 
 
 Corresponding author:  Lei, T. (ddragon@public3.bta.net.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  45-50
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Founding the prediction model of watershed soil erosion could provide basis for comprehensive management to a small watershed and make macro decision-making such as land use plans, at the same time it could provide reference for evaluating the effect of small watershed water and soil conservation. Through the analysis of the dynamic process of erosion and the reasonable coupling to space-time relationship between surface-channel and channels, a soil erosion dynamic simulation model of watershed system was established on the basis of continuous flow equation, conservation of momentum equation and mass conservation equation of sediment. Discrete numerical model of watershed system was established by using the FEM to discrete simulation model of soil erosion. VC + + computer simulation program to soil erosion was developed on the basis of determining discrete approach to space-time. In the laboratory artificial simulated rainfall conditions, the run-off flow, run-off sediment and the channel flow dynamics processes at the typical points were got by using this program to simulate soil erosion in model watershed at the case of 50 mm/h rain intensity and 5 min rainfall duration. Comparing simulation results and measuring results at channel outlet, the simulation accuracy of run-off flow, run-off sediment and flow were all more than 80%. The results showed that the soil erosion simulation model was reliable, the discrete numerical method and the preparation of the programs were all entirely feasible. The simulation method presented in this study can provide a basis and reference for simulation of watershed soil erosion.
 
 Number of references:  24
 
 Main heading:  Geologic models
 
 Controlled terms:  Decision making  -  Dynamic models  -  Erosion  -  Flow simulation  -  Land use  -  Landforms  -  Numerical methods  -  Rain  -  Sedimentology  -  Soil conservation   -  Soils  -  Watersheds
 
 Uncontrolled terms:  Artificial simulated rainfall  -  Conservation of momentum  -  Continuous flows  -  Discrete numerical model  -  Discrete simulation model  -  Dynamic process  -  Dynamic process simulation  -  Dynamic simulation  -  FEM  -  Flow dynamics   -  Land-use plan  -  Mass conservation equations  -  Numerical simulation  -  Prediction model  -  Rain-intensity  -  Rainfall duration  -  Simulation accuracy  -  Simulation methods  -  Simulation model  -  Simulation result   -  Small watersheds  -  Soil erosion  -  Soil erosion dynamics  -  Soil erosion model
 
 Classification code:  921.6 Numerical Methods  -  921 Mathematics  -  912.2 Management  -  723.5 Computer Applications  -  483.1 Soils and Soil Mechanics  -  483 Soil Mechanics and Foundations  -  481.1 Geology  -  444.1 Surface Water  -  443.3 Precipitation  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  403 Urban and Regional Planning and Development
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.007
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  31.     
 
 Accession number:  20105013479957
 
 Title:  Relationship between color features and germination of delinted cottonseed based on RGB color model
 
 Authors:  Zhang, Ruoyu1 ; Kan, Za1 ; Ma, Rong1 ; Cao, Weibin1 ; Li, Jiangbo2 
 
 Author affiliation:  1  Machinery and Electricity Engineering College, Shihezi University, Shihezi 832000, China
 
2  College of Biosystem Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
 
 
 Corresponding author:  Kan, Z. (kz-shz@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  172-177
 
 Language:  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 get the relationship between quality and external color characteristic of delinted cottonseeds, firstly, the images of cottonseed samples were acquired by using digital camera and color features of cottonseeds were extracted based on image processing technology. Then, the germinating experiment were performed strictly according to the national standard (GB/T3543.4-1995). Finally, a prediction model between delinted cottonseeds germination and color characteristic was developed based on the linear regression and the stepwise regression analysis methods, and the precision of model also were estimated. The experimental results showed that stepwise regression models achieved quality predictions with determination coefficients (R2) of 0.6949 for germination trend and 0.7148 for germination rate based on four color characteristic parameters (R/(R+G+B), G/(R+G+B), (R-G-B)/(R+G) and R/G), and the two determination coefficients passed 0.01 test level.These results provide a theoretic basis for rapid and effective sorting of delinted cottonseeds under the RGB color model.
 
 Number of references:  28
 
 Main heading:  Color
 
 Controlled terms:  Cameras  -  Image processing  -  Mathematical models  -  Regression analysis  -  Relativity  -  Technology transfer
 
 Uncontrolled terms:  Color characteristics  -  Color features  -  Delinted cottonseeds  -  Determination coefficients  -  Germination rates  -  Germination trend  -  Image processing technology  -  National standard  -  Prediction model  -  Quality prediction   -  RGB Color Model  -  Stepwise regression  -  Stepwise regression analysis
 
 Classification code:  931.5 Gravitation, Relativity and String Theory  -  922.2 Mathematical Statistics  -  921 Mathematics  -  911.2 Industrial Economics  -  742.2 Photographic Equipment  -  741.1 Light/Optics  -  741 Light, Optics and Optical Devices
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.029
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  32.     
 
 Accession number:  20105013479949
 
 Title:  Robust design of priority valve in load sensing hydraulic steering system
 
 Authors:  Hou, Youshan1 ; Shi, Boqiang1 ; Gu, Jie1 
 
 Author affiliation:  1  Civil and Environment Engineering School, University of Science and Technology Beijing, Beijing 100083, China
 
 
 Corresponding author:  Hou, Y. (houyoushan2008@sohu.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  129-133
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  The aim of the research is to realize the robust design of priority valve. Based on the analytical method and SIMULINK software, the dynamic mathematical model and simulation model of priority valve were established, and the influence characteristics of system parameters on priority valve dynamic response were analyzed. On basis of analyzing the main influencing factors on dynamic response, the robust design based on loss model was completed, by using the minimum overshoot of priority steering system flow response as the design objective, the valve core diameter, spring stiffness and throttle area as the design variables, the steering wheel angular, steering load, work load and output flow as the uncertain factors. The results show that robust design can improve design objective to a certain extent, the dynamic response characteristic of priority valve is promoted. The design method is also applicable to other valves design improvement.
 
 Number of references:  14
 
 Main heading:  Design
 
 Controlled terms:  Computer simulation  -  Computer software  -  Dynamic response  -  Mathematical models  -  Sensors  -  Valves (mechanical)
 
 Uncontrolled terms:  Analytical method  -  Core diameters  -  Design improvements  -  Design method  -  Design objectives  -  Design variables  -  Dynamic mathematical model  -  Influencing factor  -  Load sensing  -  Loss model   -  Output flow  -  Priority valve  -  Response characteristic  -  Robust designs  -  Simulink software  -  Spring stiffness  -  Steering systems  -  Steering wheel  -  Uncertain factors  -  Valves   -  Work loads
 
 Classification code:  921 Mathematics  -  801 Chemistry  -  723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  601.2 Machine Components  -  408.1 Structural Design, General  -  408 Structural Design
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.021
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  33.     
 
 Accession number:  20105013479930
 
 Title:  Effect and improvement of period division on model of cotton crop response to water
 
 Authors:  Wang, Yangren1 ; Zhou, Qingyun1 ; Sun, Xinzhong2 ; Wang, Wenlong3 
 
 Author affiliation:  1  Department of Water Conservancy Engineering, Tianjin Agricultural University, Tianjin 300384, China
 
2  Shanxi Yuncheng Water Conservancy Research Institute, Yuncheng 030014, China
 
3  Shanxi Technical College of Water Conservancy, Yuncheng 030014, China
 
 
 Corresponding author:  Wang, Y. (wyrf@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 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 improve the model simulation accuracy of crop response function to water, the modified model of cotton crop response to water was established based on the experimental data obtained in 2006 and 2008. Parameters of cotton crop response to water were solved with nonlinear programming by interval period division in growing period of cotton. The relationship of parameters and the number of periods was analyzed. The model of crop response to water was modified by introducing the number of periods into cumulative function of moisture sensitive index, and was compared with the existing model of crop response to water. The results showed that the relative error of yield simulation by modified model was reduced with number of periods increasing. When the number of periods was more than 11, the average of relative error and the biggest value were respectively reduced to less than 7% and 15%. Compared with existing model, the number of parameters was not increased and the simulation accuracy was improved for modified model. It shows that the modified model perform better for yield simulation with any period number and can accurately reflect the change of yield by the water stress time.
 
 Number of references:  22
 
 Main heading:  Computer simulation
 
 Controlled terms:  Cotton  -  Crops  -  Cultivation  -  Evapotranspiration  -  Moisture  -  Water supply  -  Yield stress
 
 Uncontrolled terms:  Crop response  -  Experimental data  -  Growing period  -  Model simulation  -  Modified model  -  Moisture sensitivity index  -  Relative errors  -  Sensitive index  -  Simulation accuracy  -  Water stress   -  Yield
 
 Classification code:  951 Materials Science  -  821.4 Agricultural Products  -  821.3 Agricultural Methods  -  801.4 Physical Chemistry  -  723.5 Computer Applications  -  446.1 Water Supply Systems  -  444.1 Surface Water  -  422 Strength of Building Materials; Test Equipment and Methods  -  421 Strength of Building Materials; Mechanical Properties
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.002
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  34.     
 
 Accession number:  20105013479980
 
 Title:  Land use/cover decision tree classification fusing multi-temporal and multi-spectral of MODIS
 
 Authors:  Liu, Jianguang1, 2 ; Li, Hong2 ; Sun, Danfeng1 ; Zhang, Weiwei2 ; Zhou, Liandi2 
 
 Author affiliation:  1  College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
 
2  Institute of System Comprehensive Development, Beijing Academy of Agriculture and Forest Science, Beijing 100097, China
 
 
 Corresponding author:  Li, H. (lihsdf@sina.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  312-318
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  To explore the low-cost, high-precision real-time access method of land use/cover using the combination of MODIS multi-temporal and multi-spectral is very necessary for quickly assess regional land use/cover change. Firstly, using land use/cover types samples' mean and standard deviation, the study established each types' typical NDVI time series curves in the Beijing study area, then extracted 6 classification parameters quantifying phenophase types, agricultural cultural patterns and plants growth rate etc. Secondly, principal component transform was performed to March month multi-spectral remote sensing image, and the PC1 (first principal component) was selected as an assistant classification parameter that can reflect more bare soil alike information. At last, land use/cover was classified in CART (classification and regression tree) decision tree method integrating the above types parameters. Classification accuracy was tested by SPOT-5 image, overall accuracy is 83%, Kappa coefficient is 0.769, the classification overall accuracy with PC1 is 2.1% higher than without it. The results show that: the established typical NDVI time series curves have a strong presentation of land use/cover types in this region, classification parameters extracted are very distinguishing in types. March month MODIS multi-spectral imaging can efficiently improve the MODIS-NDVI time series' classification accuracy.
 
 Number of references:  16
 
 Main heading:  Principal component analysis
 
 Controlled terms:  Decision trees  -  Image reconstruction  -  Land use  -  Radiometers  -  Remote sensing  -  Time series
 
 Uncontrolled terms:  Accuracy test  -  Bare soils  -  Classification  -  Classification accuracy  -  Classification and regression tree  -  Classification parameters  -  Decision tree classification  -  Decision tree method  -  First principal components  -  High-precision   -  Kappa coefficient  -  Land use/cover  -  Land use/cover change  -  MODIS  -  Multi-spectral  -  Multi-temporal  -  Multispectral imaging  -  NDVI time series  -  Phenophase  -  Principal Components   -  Real-time access  -  Remote sensing images  -  Standard deviation  -  Study areas
 
 Classification code:  961 Systems Science  -  944.7 Radiation Measuring Instruments  -  922.2 Mathematical Statistics  -  922 Statistical Methods  -  741 Light, Optics and Optical Devices  -  731.1 Control Systems  -  403 Urban and Regional Planning and Development
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.052
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  35.     
 
 Accession number:  20105013479945
 
 Title:  Experiments on performance of vibration and up-draft separator for rape seed shelled
 
 Authors:  Guo, Guisheng1 ; Lü, Xinmin1 ; Guo, Kangquan1 ; Feng, Tao1 ; Zhang, Lijun1 
 
 Author affiliation:  1  College of Mechanical and Electronic Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China
 
 
 Corresponding author:  Guo, K. (jdgkq@nwsuaf.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  108-112
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to optimize the parameters of shelled rape seed separator, and improve its sorting performance, separating experiments of shelled rapeseed were conducted using self-developed vibration and up-draft separator by quadratic orthogonal rotary experiment with three-factor and five-level. The influences of wind speed of front wind tunnel, wind speed of behind wind tunnel and feeding volume on the rate of kernel included in shell and the rate of shell included in kernel were investigated. The results showed that the sequences of factors, which influencing the rate of kernel included in shell and the rate of shell included in kernel, were wind speed of the front wind tunnel, the feeding volume and the wind speed of behind wind tunnel. Optimal parameters of shelled rapeseed separator were as abstained that feeding volume was 650-750 kg/h, wind speed of front wind tunnel was 1.5 m/s, wind speed of behind wind tunnel was 5.14 m/s. The research results can provide a reference for design and performance improvement of shelled rapeseed separator.
 
 Number of references:  15
 
 Main heading:  Experiments
 
 Controlled terms:  Aerodynamics  -  Feeding  -  Optimization  -  Separators  -  Shells (structures)  -  Speed  -  Wind effects  -  Wind tunnels
 
 Uncontrolled terms:  In-shell  -  Optimal parameter  -  Performance improvements  -  Rapeseed  -  Research results  -  Shelling  -  Vibrations  -  Wind speed
 
 Classification code:  931.1 Mechanics  -  921.5 Optimization Techniques  -  901.3 Engineering Research  -  802.1 Chemical Plants and Equipment  -  691.2 Materials Handling Methods  -  651.2 Wind Tunnels  -  651.1 Aerodynamics, General  -  408.2 Structural Members and Shapes  -  408.1 Structural Design, General
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.017
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  36.     
 
 Accession number:  20105013479970
 
 Title:  Estimation of livestock greenhouse gases discharge in China
 
 Authors:  Hu, Xiangdong1 ; Wang, Jimin1 
 
 Author affiliation:  1  Institute of Agricultural Economics and Development, Chinese Academy of Agricultural Sciences, Beijing 100081, China
 
 
 Corresponding author:  Wang, J. (wangjm@mail.caas.net.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  247-252
 
 Language:  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 preliminarily explore livestock greenhouse gas emissions and trends, and assess the amount of greenhouse gases emitted by China's livestock industries, using the calculation methodology and livestock industry gas emission parameters published by the Inter-governmental Panel on Climate Change. The amount of gas emission by livestock industries in China was calculated for 2000-2007 at the national level and for 2007 at the provincial level. Study results showed that on average, methane emission by the livestock industries was about 10 million tons per annum, and N2O emission was about 577 thousand tons per annum. During 2000-2007, total greenhouse gas emission by livestock industries in China exhibited a declining trend. Among different animals, Chinese cattle were the largest contributor to methane emission and pigs were the largest contributor to N2O emission. Sichuan and Henan were the two largest producers of methane and N2O gases among all provinces. To reduce greenhouse gas emissions by livestock industries in China, diverse measures are required for different kinds of animals and different regions.
 
 Number of references:  19
 
 Main heading:  Gas emissions
 
 Controlled terms:  Agriculture  -  Animals  -  Estimation  -  Global warming  -  Greenhouse gases  -  Methane
 
 Uncontrolled terms:  CH4  -  Discharge  -  Emission parameters  -  Livestock  -  Methane emissions  -  N2O  -  National level  -  Sichuan
 
 Classification code:  451 Air Pollution  -  451.1 Air Pollution Sources  -  522 Gas Fuels  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  921 Mathematics
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.042
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  37.     
 
 Accession number:  20105013479942
 
 Title:  Hydrological model of weathered granite watershed based on prototype monitoring and DEM
 
 Authors:  Fu, Congsheng1, 2 ; Chen, Jianyao1 ; Zeng, Songqing3 ; Jiang, Huabo1 ; Dong, Linyao1 
 
 Author affiliation:  1  Geography and Planning School, Sun Yat-Sen University, Guangzhou 510275, China
 
2  Watershed Science and Environmental Ecology Research Institute, Wenzhou Medical College, Wenzhou 325035, China
 
3  Shantou Branch, Guangdong Hydrology Administration, Shantou 515000, China
 
 
 Corresponding author:  Chen, J. (chenjyao@mail.sysu.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  90-98
 
 Language:  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 aim of the research is to investigate the particular runoff generation mechanisms of granite watersheds. The small coastal basin within Zhuhai campus of Sun Yat-sen University was selected for runoff generation study. With dominant sandy loam soil to a depth of 2 m and weathered granite bedrock in the basin, two plots of 5 m×10 m slope with bush and tree cover respectively were built to monitor the runoff processes of varied layers from surface, subsurface to the bedrock. Moisture profiles by time domain reflectometry (TDR) indicated that preferential flow and excess infiltration flow usually occurred, and subsurface flow, including runoff from the interface of soil and bedrock could contribute a large component to the hydrograph, especially during a heavy rainfall event. Based on these observations and flow discharge at two weirs, a hydrological model with three sources from overland flow, interflow and bedrock fissure flow was developed. The whole basin was separated into 2736 cells (20 m×20 m) based on a digital elevation map (DEM) with runoff generation calculated for each cell. The linear reservoir concept was used to derive runoff components and route runoff to the next cell with the steepest slope among eight flow directions, while water was routed in the channel by solving one dimensional Saint-Venant equation. Nine rainfall events were used to calibrate the parameters by the trial-and-error method, and the other four were used to verify the model; hydrographs of both calibrated and verified events were reproduced relatively well using the model. According to the simulated result, the overland flow, particularly from the zone next to the channel was found to be the main contribution to the rising hydrograph, while the fissure flow to the recession processes. The monitoring and modeling results illustrated that obvious subsurface flow and bedrock fissure flow were the runoff generation characteristics of granite watersheds in southern China.
 
 Number of references:  18
 
 Main heading:  Runoff
 
 Controlled terms:  Climate models  -  Granite  -  Groundwater flow  -  Landforms  -  Rain  -  Reservoirs (water)  -  Roads and streets  -  Soils  -  Surveying  -  Time domain analysis   -  Watersheds
 
 Uncontrolled terms:  Bedrock fissure flow  -  DEM  -  Interflow  -  Preferencial flow  -  Zhuhai City
 
 Classification code:  483.1 Soils and Soil Mechanics  -  481.1 Geology  -  444.2 Groundwater  -  444.1 Surface Water  -  921 Mathematics  -  443.3 Precipitation  -  441.2 Reservoirs  -  406.2 Roads and Streets  -  405.3 Surveying  -  443 Meteorology
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.014
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  38.     
 
 Accession number:  20105013479939
 
 Title:  Effects of super absorbent polymer on growth and yield of cotton under different irrigation conditions in Xinjiang Uyghur Autonomous Region
 
 Authors:  Bai, Wenbo1, 2, 3 ; Wang, Chunyan1, 2, 3 ; Li, Maosong1, 2, 3 ; Bao, Shunshu4 ; He, Shuang1, 2, 3 ; Cao, Silin5 ; Song, Jiqing1, 2, 3 
 
 Author affiliation:  1  Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
 
2  Key Laboratory of Agro-Environment and Climate Change, Ministry of Agriculture, Beijing 100081, China
 
3  Key Laboratory of Dryland Farming and Water-Saving Agriculture, Ministry of Agriculture, Beijing 100081, China
 
4  Chinese Academy of Agricultural Engineering, Beijing 100125, China
 
5  Xinjiang Academy of Agricultural Reclamation Sciences, Shihezi 832003, China
 
 
 Corresponding author:  Song, J. (sokise63@yahoo.com.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  69-76
 
 Language:  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 purpose of promoting water-saving irrigation and cotton yield in Xinjiang Uyghur Autonomous Region, the effect of super absorbent polymer (SAP) on the growth, dry matter accumulation and distribution, water absorption and yield of cotton were studied through field experiments. The results showed that SAP application induced to the reduction in plant height, leaf number of the main stem, square number and leaf area, while an increase in boll numbers. SAP application could accelerate the growth of root, square and boll. The dry matter allocation ratio from nutritional organs to reproductive organs increased by 13.8%-25.8%, and the water transportation ability from roots to stems and leaves was also enhanced. Compared to the usual irrigation quantity of farmers, SAP application could save water 21.1% and increase yield 6.7%-22.0% under proper water-saving irrigation (the irrigation quantity was above 40% of the usual irrigation quantity). When the irrigation quantity was 40% of the usual irrigation quantity, the yields of cotton were not reduced with SAP application. Moreover, the yields could increase 22.0% with SAP application and 7.4% without SAP application, compared to the control (usual irrigation, without SAP application), when the irrigation quantity was about 80% of the usual irrigation quantity, which was considered as the optimal irrigation quantity. The high production of cotton was relative to the increased boll numbers and boll weights, and the regulation of dry matter accumulation, distribution and water metabolism with SAP application.
 
 Number of references:  25
 
 Main heading:  Irrigation
 
 Controlled terms:  Cotton  -  Water absorption  -  Water conservation
 
 Uncontrolled terms:  Boll weights  -  Cotton yield  -  Dry matter accumulation  -  Dry matters  -  Field experiment  -  Growth and yield  -  Leaf area  -  Plant height  -  Ploymers  -  Reproductive organs   -  Superabsorbent polymer  -  Water transportation  -  Water-saving irrigation  -  Xinjiang  -  Yield
 
 Classification code:  444 Water Resources  -  802.3 Chemical Operations  -  821.3 Agricultural Methods  -  821.4 Agricultural Products
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.011
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  39.     
 
 Accession number:  20105013479947
 
 Title:  Working mechanism of vibration spacing scarifier for grassland
 
 Authors:  Dong, Xiangqian1 ; Song, Jiannong1 ; Wang, Jicheng1 ; Li, Yonglei1 ; Wu, Guangwei2 
 
 Author affiliation:  1  College of Engineering, China Agricultural University, Beijing 100083, China
 
2  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
 
 
 Corresponding author:  Dong, X.
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  119-123
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to improve the performance of the vibration spacing scarifier for grassland, the working mechanism of the equipment should be studied. The crushing mechanism under the forced oscillation of the scarifier part was discussed in the paper by carrying out the motion simulation analysis to the single set of working parts of the equipment. The working process could be divided into two alternating actions, the soil-cutting action and the soil-throwing action. Both extrusion and vibration loosen effects were achieved during the process, which the soil mattress were loosened by the cutting, bending and stretching force. The direction of the excitation and the cutting blade had a certain angle, which helped to reduce the traction resistance and had a better effect on the soil loosen.
 
 Number of references:  12
 
 Main heading:  Soils
 
 Controlled terms:  Agricultural machinery  -  Agriculture
 
 Uncontrolled terms:  Cutting blades  -  Forced oscillations  -  In-situ  -  Motion simulations  -  Spacing tillage  -  Stretching force  -  Traction resistance  -  Vibration  -  Workgroups  -  Working mechanisms   -  Working parts  -  Working process
 
 Classification code:  483.1 Soils and Soil Mechanics  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.1 Agricultural Machinery and Equipment
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.019
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  40.     
 
 Accession number:  20105013479932
 
 Title:  Soil water balance model in root zone of winter wheat based on system dynamics
 
 Authors:  Chen, Haorui1 ; Huang, Jiesheng1 ; Wu, Jingwei1 ; Yang, Jinzhong1 
 
 Author affiliation:  1  State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
 
 
 Corresponding author:  Huang, J. (jshuanga@public.wh.hb.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  21-28
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  A system dynamics-based one-dimensional soil water balance model (SD-WBM) was developed to estimate water budget in root zone of winter wheat on daily basis with Vensim software. It was assumed that the 2m-soil was comprised of 10 series-wound soil reservoirs. The physical processes, such as infiltration, soil evaporation, plant root water uptake, capillary rise and water redistribution between two adjacent soil reservoirs, were calculated in the model. For validation and calibration, field experiments of winter wheat were conducted in Shijing Irrigation Scheme in Hebei Province during 2007-2009, and model-calculated soil water content of 10 soil-depth intervals from 0 to 200 cm were compared with measured water content. The results showed that mean residual ratio (MRR) and distribution root mean square ratio (DRMSR) were all less than 15% in the validation and calibration. Furthermore, assumptions in SD-WBM were proved to be reasonable, with no structural error occurring through tests under three kinds of extreme condition, such as sensitive tests of six kinds of parameters as well as comparisons with Hydrus-1d model. Simulating results of soil water budget during growing season of winter wheat indicated that precipitation and irrigation were dominant water supply with little capillary rise and large amount of percolation. And water storage changes little in the harvest day compared to that in the sowing day.
 
 Number of references:  22
 
 Main heading:  Geologic models
 
 Controlled terms:  Budget control  -  Calibration  -  Climate models  -  Irrigation  -  Reservoirs (water)  -  Soil moisture  -  Solvents  -  System theory  -  Underwater soils  -  Water content   -  Water supply
 
 Uncontrolled terms:  Capillary rise  -  Extreme conditions  -  Field experiment  -  Growing season  -  Hebei Province  -  HYDRUS-1D  -  Irrigation schemes  -  Physical process  -  Plant roots  -  Residual ratios   -  Root Mean Square  -  Root zone  -  Soil water  -  Soil water balance  -  Soil water balance model  -  Soil water content  -  Structural errors  -  System Dynamics  -  Water budget  -  Water redistribution   -  Water storage  -  Winter wheat
 
 Classification code:  911 Cost and Value Engineering; Industrial Economics  -  921 Mathematics  -  941 Acoustical and Optical Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  961 Systems Science  -  821.3 Agricultural Methods  -  441.2 Reservoirs  -  443 Meteorology  -  444 Water Resources  -  446.1 Water Supply Systems  -  481.1 Geology  -  483.1 Soils and Soil Mechanics  -  803 Chemical Agents and Basic Industrial Chemicals
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.004
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  41.     
 
 Accession number:  20105013479940
 
 Title:  Experiments on variation of tomato sap flow under drip irrigation conditions in greenhouse
 
 Authors:  Liu, Hao1 ; Sun, Jingsheng1 ; Duan, Aiwang1 ; Liu, Zugui1 ; Liang, Yuanyuan1 
 
 Author affiliation:  1  Key Laboratory for Crop Water Requirement and Regulation of Ministry of Agriculture, Institute of Farmland Irrigation Research, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China
 
 
 Corresponding author:  Duan, A. (duanaiwang@yahoo.com.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  77-82
 
 Language:  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 ascertain the variation law and effect factors of sap flow rate, dynagage sap flow sensors (developed by Dynamax Inc.) were used to measure the sap flow rate of tomatoes in greenhouse, and the variation law and standardized processing technology of sap flow rate were studied in this paper. The relationship between sap flow rate and meteorological factors was discussed, and the effects of water stress on sap flow rate of tomato were also analysed. The results showed that using sap flow rate per unit leaf area to express the variation of sap flow rate could reduce the difference in sap flow rates among various plants. Solar radiation and vapor pressure deficiency were the main factors affecting the sap flow rate of tomato under adequate water-supply conditions, in which there were linear relationship between daily sap flow rate and sun radiation, and logarithmic relationship between daily sap flow rate and vapour pressure deficit (R2>0.90, P<0.01). Sap flow rate of tomato was affected by soil water moisture. Sap flow rate decreased with soil water stress. Research results show that standardized sap flow rate of tomato can reflect the true transpiration.
 
 Number of references:  22
 
 Main heading:  Atmospheric movements
 
 Controlled terms:  Fruits  -  Greenhouse effect  -  Greenhouses  -  Irrigation  -  Moisture determination  -  Plants (botany)  -  Public utilities  -  Soil moisture  -  Solar radiation  -  Sun   -  Underwater soils  -  Water supply  -  Water vapor
 
 Uncontrolled terms:  Adequate waters  -  Drip irrigation  -  Effect factors  -  Leaf area  -  Linear relationships  -  Logarithmic relationship  -  Low rates  -  Meteorological factors  -  Per unit  -  Pressure deficiency   -  Processing technologies  -  Research results  -  Sap flow  -  Sap flow rate  -  Sap flow sensors  -  Soil water  -  Sun radiation  -  Tomato  -  Vapour pressures  -  Water stress
 
 Classification code:  944.2 Moisture Measurements  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  706 Electric Transmission and Distribution  -  657.2 Extraterrestrial Physics and Stellar Phenomena  -  657.1 Solar Energy and Phenomena  -  483.1 Soils and Soil Mechanics  -  461.9 Biology  -  446.1 Water Supply Systems  -  443.1 Atmospheric Properties
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.012
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  42.     
 
 Accession number:  20105013479948
 
 Title:  Numerical simulation of inlet guide vane regulation for mixed-flow pump
 
 Authors:  Kong, Fanyu1 ; Wang, Wenting1 ; Huang, Daojian1 ; Huang, Jianping2 ; Geng, Jizhong2 
 
 Author affiliation:  1  Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
 
2  Hunan Neptune Pump Co. Ltd., Changsha 410000, China
 
 
 Corresponding author:  Wang, W. (wenting_1120@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  124-128
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to improve the hydraulic performance of the mixed-flow pump in off-design condition and master the basic principle of inlet guide vane regulating condition, authors conducted the numerical simulation for internal flow field of mixed-flow pump in different operating conditions by using finite element analysis software. With the modification of setting angle of the inlet guide vane, the change regulation of absolute flow angle, ralative flow angle and circumferential component of absolute velocity in impeller inlet were analyzed. The results showed that absolute flow angle was less than setting angle, and the smaller the flow was, the larger the difference was, and the effect of inlet guide vane regulation under large flow condition was more obvious than under small flow condition. The results also indicated that the inlet liquid flow can satisfy non-impact or smaller incidence angle inlet conditions in certain flow extent, and the pump can be operated with high efficiency in off-design conditon.
 
 Number of references:  16
 
 Main heading:  Inlet flow
 
 Controlled terms:  Computer software  -  Finite element method  -  Flow simulation  -  Mathematical models  -  Pumps  -  Vane pumps  -  Wakes
 
 Uncontrolled terms:  Basic principles  -  Finite element analysis software  -  Flow angles  -  Flow condition  -  High efficiency  -  Hydraulic performance  -  Impeller inlets  -  Incidence angles  -  Inlet conditions  -  Inlet guide vane   -  Internal flow field  -  Liquid flow  -  Mixed flow pump  -  Numerical simulation  -  Off design condition  -  Operating condition  -  Pre-whirl regulation
 
 Classification code:  618.2 Pumps  -  631.1 Fluid Flow, General  -  723 Computer Software, Data Handling and Applications  -  921 Mathematics  -  921.6 Numerical Methods
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.020
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  43.     
 
 Accession number:  20105013479959
 
 Title:  Random distribution model for quick test of fruiter leaf area index
 
 Authors:  Wu, Weibin1, 2 ; Hong, Tiansheng1, 2 ; Yue, Xuejun1, 2 ; Li, Zhen1, 2 ; Zhu, Yuqing1, 2 
 
 Author affiliation:  1  Key Laboratory of Key Technology for South Agricultural Machine and Equipment, Ministry of Edu., South China Agricultural University, Guangzhou 510642, China
 
2  Engineering College of 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:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  183-187
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Many researches have been conducted on the instrument of precision spraying while the quick test of leaf area index (LAI) with the key optical model for the test prototype on single fruit tree could not meet the requirement of the instrument. According to the single, independent, irregular and uneven fruiter canopy, a computer random distribution model was developed and simulated for LAI calculation. Programmed by Visual C language, the random distribution of rectangle leaves on flat surface was built and it was integrated with real guava parameters especially on shadow area and leaf width. The model was applied on virtual guava based on real guava and manmade guava's LAI calculation. The results show that the random model is applicable and can provide the relation tables among coefficient of variance, reasonable sampling number and confidence level of virtual fruiter shadow rate which are useful for real guava shadow rate and LAI measurement.
 
 Number of references:  16
 
 Main heading:  Virtual reality
 
 Controlled terms:  Orchards
 
 Uncontrolled terms:  Fruiter  -  Leaf area index  -  Random-distribution models  -  Shadow rate  -  Variance coefficient
 
 Classification code:  723 Computer Software, Data Handling and Applications  -  821.3 Agricultural Methods
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.031
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  44.     
 
 Accession number:  20105013479985
 
 Title:  In-field pineapple recognition based on monocular vision
 
 Authors:  Li, Bin1 ; Ning, Wang2 ; Wang, Maohua1 ; Li, Li1 
 
 Author affiliation:  1  Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, Beijing 100083, China
 
2  Oklahoma State University, Stillwater, Oklahoma 74078, United States
 
 
 Corresponding author:  Wang, M. (wangmh@cau.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  345-349
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Recognition of pineapple fruit is key to the vision system of pineapple harvesting robots. In this paper, image processing and morphological technologies were employed to recognize the fruit eyes and get the central points information of the eyes on the green pineapples in field; then, hierarchical clustering algorithm was used to cluster the central points. By getting the central coordinates of the dataset containing the most fruit-eye central points, the approximate shape center of the pineapple was calculated. 35 images taken in pineapple field in Guangdong province were selected as the validation dataset. Experimental results showed that, the fruit correct-recognition rate could reach 85% in light-facing conditions. The research can provide effective technical solutions for the in-field fruit recognition to pineapple harvesting robots.
 
 Number of references:  13
 
 Main heading:  Computer vision
 
 Controlled terms:  Clustering algorithms  -  Fruits  -  Imaging systems  -  Morphology
 
 Uncontrolled terms:  Central point  -  Data sets  -  Fruit recognition  -  Guangdong Province  -  Harvesting robot  -  Hier-archical clustering  -  Hierarchical clustering algorithms  -  In-field  -  Monocular vision  -  Pineapple   -  Pineapple fruit  -  Recognition  -  Recognition rates  -  Technical solutions  -  Vision systems
 
 Classification code:  721 Computer Circuits and Logic Elements  -  741 Light, Optics and Optical Devices  -  741.2 Vision  -  746 Imaging Techniques  -  821.4 Agricultural Products  -  951 Materials Science
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.057
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  45.     
 
 Accession number:  20105013479971
 
 Title:  Influence of thermal blanket position on solar greenhouse temperature distributions
 
 Authors:  Tong, Guohong1 ; Christopher, David M2 ; Li, Tianlai3 ; Bai, Yikui1 
 
 Author affiliation:  1  College of Water Conservancy, Shenyang Agricultural University, Shenyang 110866, China
 
2  Department of Thermal Energy Engineering, Tsinghua University, Beijing 100084, China
 
3  College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
 
 
 Corresponding author:  Tong, G. (guohongtong@yahoo.com.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  253-258
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  The thermal blanket positions on the south roof of a solar greenhouse during the daytime influence the solar energy transmitted into the greenhouse and the heat dissipation through the south roof, both of which affect the inside temperature. Actual external climatic conditions were used here as input parameters in simulations of the temperature environments for a 12 m span greenhouse with cases of blankets halfway rolled up and completely rolled up on the south roof in a clear day and a cloudy day. The predictions showed that the air temperatures inside the greenhouse during the daytime are higher for blankets halfway rolled up than completely rolled up, but during the night time the average air temperature differences between the two cases are very small. The results also indicated that with a clear day the north wall surface temperatures at night are higher in the condition of blankets halfway rolled up than that in the condition of completely rolled up, but there is little influence on north roof surface temperature. The results can be used to optimize the thermal blanket positions for actual greenhouses based on the weather conditions of clear or cloudy days.
 
 Number of references:  13
 
 Main heading:  Greenhouses
 
 Controlled terms:  Atmospheric temperature  -  Glass industry  -  Roofs  -  Solar energy  -  Solar heating  -  Solar radiation  -  Sun  -  Surface properties  -  Temperature distribution  -  Thermoanalysis   -  Walls (structural partitions)
 
 Uncontrolled terms:  Air temperature  -  Average air temperature  -  Climatic conditions  -  Cloudy days  -  Heat dissipation  -  Input parameter  -  Inside temperature  -  Night time  -  Roof surface temperature  -  Simulation   -  Solar greenhouse  -  Thermal blanket  -  Wall surface temperature  -  Weather conditions
 
 Classification code:  913 Production Planning and Control; Manufacturing  -  912 Industrial Engineering and Management  -  801 Chemistry  -  657.2 Extraterrestrial Physics and Stellar Phenomena  -  951 Materials Science  -  657.1 Solar Energy and Phenomena  -  443.1 Atmospheric Properties  -  402.1 Industrial and Agricultural Buildings  -  402 Buildings and Towers  -  641.1 Thermodynamics
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.043
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  46.     
 
 Accession number:  20105013479982
 
 Title:  GIS-based suitability evaluation for green agricultural product base
 
 Authors:  You, Juan1, 2, 3 ; Pan, Yuchun1 ; Chen, Baisong1, 3 ; Wang, Jihua1 ; Lu, Zhou1 ; Zhang, Wuming3 
 
 Author affiliation:  1  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
 
2  Shenzhen Baoan Middle School, Shenzhen 518101, China
 
3  School of Geography, Beijing Normal University, Beijing 100875, China
 
 
 Corresponding author:  Wang, J. (wangjh@nercita.org.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  325-330
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  The proposal and improvement of a method for suitability evaluation of green agricultural product bases can improve the practicability and accuracy of the evaluations. And thus, it is important to guarantee the safety of agricultural products. Based on the requirements of the authenticators, planners and producers, this paper proposed a multi-dominant indicator system which meeted different needs. GIS-based spatial analysis was adopted to quantitatively evaluate the suitability of an agricultural base. A case study was carried out in Daxing District of Beijing City. The results indicated that the distances trom a base to some potential pollution sources like industrial or mining enterprises or settlements reduced greatly on the suitability of this base; and different systems of indices were required for different evaluation purposes. GIS-based method is highly practicable in the evaluation due to its high efficiency and visualization of its results.
 
 Number of references:  17
 
 Main heading:  Agricultural products
 
 Controlled terms:  Environmental impact  -  Environmental impact assessments  -  Geographic information systems  -  Information systems  -  Pollution  -  Rating  -  Risk assessment  -  Visualization
 
 Uncontrolled terms:  Beijing city  -  Green agricultural product base  -  High efficiency  -  Indicator system  -  Pollution sources  -  Potential pollution  -  Spatial analysis  -  Suitability evaluation
 
 Classification code:  922.1 Probability Theory  -  903.2 Information Dissemination  -  902.2 Codes and Standards  -  902.1 Engineering Graphics  -  821.4 Agricultural Products  -  723.3 Database Systems  -  454.2 Environmental Impact and Protection
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.054
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  47.     
 
 Accession number:  20105013479991
 
 Title:  Performance of solar dryer and drying effect for panax notoginseng
 
 Authors:  Wang, Yunfeng1 ; Li, Ming1 ; Wang, Liuling2 ; Wei, Shengxian1 
 
 Author affiliation:  1  Key Lab. of Advanced Technique and Preparation for Renewable Energy Materials, Ministry of Edu., Yunnan Normal University, Kunming 650092, China
 
2  School of Physics and Electric Information, Yunnan Normal University, Kunming 650092, China
 
 
 Corresponding author:  Li, M. (lmllldy@126.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  377-383
 
 Language:  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 efficiency and quality of panax notoginseng drying, a solar dryer consisting of two identical solar collector, solar drying cabinet, and air blower for panax notoginseng drying were constructed. The air solar collector consists of two air passes having V-groove absorption plates, and a single glass cover. The thermal performance of solar dryer was investigated and experiment with the solar dryer for panax notoginseng was conducted under climate condition of Kunming, Yunnan Province. Drying effect of the equipment was compared with that of traditional nature drying. The results showed that the solar air heating collectors could obtain a good thermal performance in winter season. While the air flow mass was 0.0597 kg/s, the maximum temperature of outlet air and maximum thermal efficiency were 62.2°C and 76.7% respectively. Its average efficiency and temperature was 53.9% and 47.5°C even in cloudy day, respectively. With the mode of air entering from the top, the temperature distribution in drying cabinet was non-uniform, causing great temperature differences in different areas. However, air temperature with this mode rose rapidly and a higher average temperature could be gained than the way air entering from the bottom. With the air deflector, the uniformity of temperature distribution inside cabinet was improved significantly. The experimental comparison between two methods suggested that the solar drying was very effective, and the drying time was shorten to about 450 minutes from 990 minutes of the traditional sun drying. It is observed that the solar dryer could obtain higher quality than traditional drying method.
 
 Number of references:  18
 
 Main heading:  Drying
 
 Controlled terms:  Agricultural products  -  Curing  -  Driers (materials)  -  Mixed convection  -  Solar collectors  -  Solar dryers  -  Solar heating  -  Temperature distribution  -  Thermoanalysis
 
 Uncontrolled terms:  Air blowers  -  Air deflectors  -  Air flow  -  Air temperature  -  Average temperature  -  Climate condition  -  Drying effects  -  Drying methods  -  Drying time  -  Experimental comparison   -  Glass covers  -  Maximum temperature  -  Nonuniform  -  Outlet air  -  Panax notoginseng  -  Solar air heating  -  Solar drying  -  Sun drying  -  Temperature differences  -  Thermal efficiency   -  Thermal Performance  -  V-groove  -  Winter seasons  -  Yunnan province
 
 Classification code:  815.1 Polymeric Materials  -  803 Chemical Agents and Basic Industrial Chemicals  -  802.1 Chemical Plants and Equipment  -  801 Chemistry  -  821.4 Agricultural Products  -  702.3 Solar Cells  -  642.1 Process Heating  -  641.2 Heat Transfer  -  641.1 Thermodynamics  -  643.1 Space Heating
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.063
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  48.     
 
 Accession number:  20105013479960
 
 Title:  Architectural parameter-based three dimensional modeling and visualization of rice roots
 
 Authors:  Xu, Qijun1 ; Tang, Liang1 ; Gu, Dongxiang1 ; Jiang, Haiyan1 ; Cao, Weixing1 ; Zhu, Yan1 
 
 Author affiliation:  1  Jiangsu Key Laboratory for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, China
 
 
 Corresponding author:  Zhu, Y. (yanzhu@njau.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  188-194
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  The objective of this paper was to develop a morphological parameter-based root geometric model of rice and realize the dynamic three-dimensional visualization of rice roots under different growth conditions. The three-dimensional display model of single root of rice was developed by analyzing the change patterns of root-tip growth with development progress, including the sub-models of initial location and growth orientation of root node, and the spatial elongation curve of root axis. By integrating the topological structure of rice root, the whole three-dimensional visualization model of rice root was established using GDD as driving factor, including the sub-models of the initial emergence time and location, initial extension angle, elongation rate and spatial distribution of adventitious root in rice. Finally, by integrating the sub-modules of visualization display, scene control, human-machine interface and database management on the platform of Visual C++, the three-dimensional visualization system of rice root was established, and the three-dimensional morphology of rice root under different growth conditions was simulated based on this system. These results could lay a foundation for development of visual rice growth system, and for reference to visualization studies in other crops.
 
 Number of references:  27
 
 Main heading:  Three dimensional
 
 Controlled terms:  Man machine systems  -  Three dimensional computer graphics  -  Topology  -  Visualization
 
 Uncontrolled terms:  3-d modeling  -  Adventitious root  -  Architectural parameters  -  Change patterns  -  Database management  -  Driving factors  -  Elongation rates  -  Geometric models  -  Growth conditions  -  Growth orientations   -  Growth systems  -  Human Machine Interface  -  Morphological parameters  -  Rice  -  Rice roots  -  Root axis  -  Root nodes  -  Roots  -  Spatial distribution  -  Spatial elongation   -  Submodels  -  Submodules  -  Three dimensional morphology  -  Three dimensional visualization  -  Three-dimensional display  -  Three-dimensional modeling  -  Tip growth  -  Topological structure  -  VISUAL C++
 
 Classification code:  723.5 Computer Applications  -  902.1 Engineering Graphics  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  961 Systems Science
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.032
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  49.     
 
 Accession number:  20105013479936
 
 Title:  Characteristics of nitrogen loss from field ditches with different densities under single rainfall event
 
 Authors:  Zhang, Zhanyu1, 2 ; Yuan, Ziying1, 2 ; Kong, Lili1, 2 ; Xia, Jihong1, 2 ; Zhu, Xiaofeng3 
 
 Author affiliation:  1  Key Lab. of Efficient Irrigation-Drainage and Agricultural Soil-Water Environment in Southern China, Hohai University, Nanjing 210098, China
 
2  College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
 
3  Beijing Water Authority, Beijing 100038, China
 
 
 Corresponding author:  Zhang, Z. (zhanyu@hhu.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  51-55
 
 Language:  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 influence of field engineering on the nitrogen loss with runoff, the farmland comparative experiments, with different field ditche densities, were designed, and rainfall-runoff and nitrogen loss characteristics were studied. The results showed that compared to the treatment having more field ditches, the runoff sensitivity affected by the rainfall intensity with the treatment having less ditches was weaker, and the runoff peak lagged behind and the larger runoff lasted a longer time, the losses of total nitrogen reduced by 7.44%. Nitrate nitrogen and ammonia nitrogen losses were significant different between the two treatments. In early and peak stages of runoff process, ammonia nitrogen had a bigger proportion to total nitrogen than that at decline stage, while nitrate nitrogen's proportion had little change in the whole process. The loss of nitrogen loading was linearly related to the runoff. The field with more field ditches reduced water logging obviously, while the field with less field ditches reduced more total nitrogen losses.
 
 Number of references:  15
 
 Main heading:  Agricultural runoff
 
 Controlled terms:  Ammonia  -  Drainage  -  Gages  -  Nitrogen  -  Rain  -  Rain gages
 
 Uncontrolled terms:  Ammonia nitrogen  -  Comparative experiments  -  Field ditch  -  Nitrate nitrogen  -  Nitrogen loading  -  Nitrogen loss  -  Rainfall event  -  Rainfall intensity  -  Rainfall runoff  -  Total nitrogen   -  Water logging  -  Whole process
 
 Classification code:  943.3 Special Purpose Instruments  -  821.5 Agricultural Wastes  -  804.2 Inorganic Compounds  -  804 Chemical Products Generally  -  502 Mines and Quarry Equipment and Operations  -  443.3 Precipitation  -  442 Flood Control; Land Reclamation  -  406 Highway Engineering  -  401 Bridges and Tunnels
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.008
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  50.     
 
 Accession number:  20105013479967
 
 Title:  Meat-productions tracking and traceability system based on internet of things with RFID and GIS
 
 Authors:  Ren, Shougang1, 3 ; Xu, Huanliang1, 3 ; Li, An1 ; Zhou, Guanghong2, 3 
 
 Author affiliation:  1  College of Information Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
 
2  College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
 
3  State Meat Quality and Safety Control Technology Research Center, Nanjing 210095, China
 
 
 Corresponding author:  Ren, S.
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  229-235
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  For improving real time, accuracy and reliability of information in meat-productions tracking and traceability system, the RFID, internet of things and relevant technologies of EPC system were introduced in the article. A RFID-based meat enterprise resource architecture was put forward, and the information flow at meat sales stage was researched and analyzed. The RFID-based meat sales tracking and traceability system was designed. The tracking system was to track the meat information with RFID tag through EPC system on sales nodes. The traceability system identified the PML server address of relevant meat sales nodes by ONS server to obtain the meat flow information, which then would be incorporated with geographic information to make visual display by the GIS software. Finally Visio Studio 2005 was used to develop programs, and Tomcat Web Server and JBoss application server as well as SQL Server 2005 database were used to deploy so as to realize the above software system. By comparison with bar code-based system, the RFID-based meat tracking and traceability system has faster data acquisition, higher reorganization rate and more automatic process.
 
 Number of references:  18
 
 Main heading:  Radio frequency identification (RFID)
 
 Controlled terms:  Agricultural products  -  Bar codes  -  Geographic information systems  -  Information systems  -  Internet  -  Meats  -  Radio navigation  -  Radio waves  -  Sales
 
 Uncontrolled terms:  Application Servers  -  Enterprise resources  -  Flow informations  -  Geographic information  -  GIS software  -  Information flows  -  Internet of things  -  Real time  -  Reliability of information  -  RF-ID tags   -  Server address  -  Software systems  -  SQL Server 2005  -  Traceability  -  Traceability systems  -  Tracking  -  Tracking and traceability systems  -  Tracking system  -  Visual display  -  Web servers
 
 Classification code:  911.4 Marketing  -  903.2 Information Dissemination  -  822.3 Food Products  -  821.4 Agricultural Products  -  723 Computer Software, Data Handling and Applications  -  718 Telephone Systems and Related Technologies; Line Communications  -  717 Optical Communication  -  716.3 Radio Systems and Equipment  -  716 Telecommunication; Radar, Radio and Television
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.039

 
  51.     
 
 Accession number:  20105013479954
 
 Title:  Monitor of corn root growth in soil based on minirhizotron technique
 
 Authors:  Liao, Rongwei1, 2 ; Liu, Jingmiao1, 3 ; An, Shunqing1 ; Niu, Junli4 ; Liang, Hong1 ; Ren, Sanxue1 ; Le, Zhangyan5 ; Cao, Yujing1 ; Li, Wenjing1 
 
 Author affiliation:  1  Chinese Academy of Meteorological Sciences, Beijing 100081, China
 
2  Graduate University of Chinese Academy of Sciences, Beijing 100039, China
 
3  Shenyang Institute of Atmospheric Environment of CMA, Shenyang 110016, China
 
4  Meteorological Department of Sichuan, Chengdu 610017, China
 
5  Meteorological Department of Langfang, Langfang 065000, China
 
 
 Corresponding author:  Liu, J. (Jingmiaol@cams.cma.gov.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  156-161
 
 Language:  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 analyze the growth rhythm of corn root, experimental filed located in the large root monitoring system of Gu Cheng agrometeorological station was chosen in this research to study the application of minirhizotron in monitoring of the growth dynamics of crop root. Minirhizotron observation method was applied to monitor the growth rhythm of corn root, and reference standard used in this research was the square whole specimens method. MATLAB image processing technology and modern statistical method were applied to analyze the experimental data. Results showed that corn root length density decreased with the soil depth increasing observed through the two methods. The results of the two methods were significant correlation with the correlation coefficient above 0.83 at 95% confidence level. The regression equation of root established by the observational data could reflect the growth rhythm of corn root. It further shows that the minirhizotron method is a less destructive and accurate method to monitor the growth of plant roots dynamic change in soil. The minirhizotron technique has a good application value on the monitor of corn root growth.
 
 Number of references:  21
 
 Main heading:  Plants (botany)
 
 Controlled terms:  Crops  -  Image processing  -  Soils
 
 Uncontrolled terms:  Corn  -  Growth  -  Minirhizotrons  -  Monitor  -  Quadrate monolith method  -  Root length density
 
 Classification code:  461.9 Biology  -  483.1 Soils and Soil Mechanics  -  741 Light, Optics and Optical Devices  -  821.4 Agricultural Products
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.026
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  52.     
 
 Accession number:  20105013479977
 
 Title:  Effects of metallic ions on hydrogen fermentation in mixed anaerobic culture system
 
 Authors:  Liu, Shiqing1, 3 ; Liu, Weiwei1 ; Ma, Huan2 ; Cao, Chengmao1 ; Wu, Delin1 ; Zhu, Dequan1 ; Wang, Jixian1 
 
 Author affiliation:  1  Technology School of Anhui Agricultural University, Hefei 230036, China
 
2  Life Sciences School of Anhui Agricultural University, Hefei 230036, China
 
3  School of Energy and Environmental Science, Yunnan Normal University, Kunming 650092, China
 
 
 Corresponding author:  Liu, W. (liuww@ahau.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  290-296
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  An L27(313) orthogonal test was performed in order to investigate the individual and interactive effects of Fe2+, Zn2+, Ni2+, K+, Mg2+, Mn2+, Fe3+ seven different metallic ions on biohydrogen production in a mixed anaerobic cultures system. The results showed that hydrogen had prominent direct ratio relationship with carbon dioxide and total gas yield while without glucose utilization ratio. By statistics method, the promoting component to hydrogen production was obtained, which consisted of Fe2+ 20 mg/L, Zn2+ 0 mg/L, Ni2+ 1 mg/L, Mg2+ 10 mg/L, K+ 100 mg/L, Fe3+ 100 mg/L, Mn2+ 1 mg/L, whereas it was demonstrated that with the promoting component the hydrogen yield and the total gas yield from PDB medium were raised 42.10% and 8.06%, respectively. It was suggested that FeSO4 prominently enhanced the production of hydrogen contrary to ZnSO4 and the couple of Ni2+-Fe3+ metallic ions was able to activate hydrogenase in the direction of hydrogen production, though optimizing the condition of hydrogen production. Finally, the possible mechanisms underlying the interactive effects of these metallic ions were discussed.
 
 Number of references:  29
 
 Main heading:  Hydrogen production
 
 Controlled terms:  Carbon dioxide  -  Fermentation  -  Gas producers  -  Glucose  -  Ions  -  Manganese  -  Zinc
 
 Uncontrolled terms:  Anaerobic cultures  -  Bio-hydrogen production  -  Gas yields  -  Hydrogen fermentation  -  Hydrogen yields  -  Hydrogenases  -  Interactive effect  -  Metallic ions  -  Orthogonal test  -  Production of hydrogen   -  Statistics method  -  Utilization ratios
 
 Classification code:  804.2 Inorganic Compounds  -  804.1 Organic Compounds  -  801.2 Biochemistry  -  801 Chemistry  -  546.3 Zinc and Alloys  -  543.2 Manganese and Alloys  -  522 Gas Fuels
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.049
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  53.     
 
 Accession number:  20105013479969
 
 Title:  Development of RTK-GPS receiver system based on VRS technology
 
 Authors:  Cao, Mingang1, 2 ; Zhang, Man1, 2 ; Ma, Wenqiang1, 2 ; Liu, Gang1, 2 
 
 Author affiliation:  1  College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
 
2  Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, Beijing 100083, China
 
 
 Corresponding author:  Zhang, M. (cauzm@cau.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  243-246
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to meet the requirements of high accuracy position in precision agriculture, using RTK-GPS OEM board and CDMA wireless communication module, the GPS Receiver system based on VRS differential was developed. The experiment results showed that the inner-coincidence accuracy of the system in short-time VRS differential positioning was less than 2 cm (95%) and the accuracy was almost the same in different weather conditions. In dynamic mode, accuracy of the system and Trimble Ag GPS332 were almost the same and both of them could reach to centimeter-level accuracy. The system can meet the requirements of precision agriculture such as automatic navigation for agriculture machine and cropland information collection.
 
 Number of references:  14
 
 Main heading:  Global positioning system
 
 Controlled terms:  Agriculture  -  Code division multiple access  -  Navigation  -  Wireless telecommunication systems
 
 Uncontrolled terms:  Automatic navigation  -  CDMA  -  Precision Agriculture  -  RTK-GPS  -  Virtual reference systems
 
 Classification code:  716 Telecommunication; Radar, Radio and Television  -  716.3 Radio Systems and Equipment  -  717 Optical Communication  -  718 Telephone Systems and Related Technologies; Line Communications  -  723 Computer Software, Data Handling and Applications  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.041
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  54.     
 
 Accession number:  20105013479937
 
 Title:  Experiments on nitrogen and phosphorus losses from paddy fields under different scales
 
 Authors:  He, Jun1 ; Cui, Yuanlai1 ; Wang, Jianpeng1 ; Shi, Weida1 
 
 Author affiliation:  1  State Key Laboratory of Water Resources and Hydropower Science, Wuhan University, Wuhan 430072, China
 
 
 Corresponding author:  Cui, Y. (Cuiyuanlai@263.net) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  56-62
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to analyze loss laws of nitrogen and phosphorus from the rice farming system under different scales, six nesting scales composing of subbasins were selected for water balance analysis as well as nitrogen and phosphorus losses monitoring during rice growing season in Zhanghe Irrigation Area, Hubei Province. Water quantity of inlet and outlet of different scales were measured and water samples were collected for nitrogen and phosphorus analysis at the same time during the whole rice growing season from May to September in 2009. The results showed that there was scale effect in the process of nitrogen and phosphorus losses from the rice farming system. The loss loads of total nitrogen, ammonia nitrogen, nitrate nitrogen, total phosphorus, particulate phosphorus and dissoluble phosphorus decreased by 80.5%, 73.4%, 39.7%, 73.8%, 75.0%, and 50.0% from field to watershed scale, respectively. The reason of scale effect was caused by removal the effect of nitrogen and phosphorus pollutants in both ponds and drainage ditches and the reuse of drainage water. The scale effect should be taken into consideration when evaluating the contribution of nitrogen and phosphorus pollution loads from farmland to river body.
 
 Number of references:  25
 
 Main heading:  Nitrogen removal
 
 Controlled terms:  Nitrogen  -  Phosphorus  -  Pollution  -  River pollution  -  Wastewater disposal  -  Wastewater reclamation  -  Water conservation
 
 Uncontrolled terms:  Ammonia nitrogen  -  Different scale  -  Drainage ditches  -  Drainage water  -  Farming system  -  Growing season  -  Hubei Province  -  Irrigation area  -  Nitrate nitrogen  -  Non-point source pollution   -  Paddy fields  -  Particulate phosphorus  -  Phosphorus loss  -  Phosphorus pollution  -  Scale effects  -  Subbasins  -  Total nitrogen  -  Total phosphorus  -  Water balance analysis  -  Water quantities   -  Water samples  -  Watershed scale
 
 Classification code:  444 Water Resources  -  453 Water Pollution  -  454.2 Environmental Impact and Protection  -  802.2 Chemical Reactions  -  804 Chemical Products Generally
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.009
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  55.     
 
 Accession number:  20105013479938
 
 Title:  Effects of stage water shortage on water consumption and leaf area index of winter wheat
 
 Authors:  Wu, Zhongdong1 ; Wang, Quanjiu2, 3 
 
 Author affiliation:  1  Institute of Resources and Environment Engineering, Shandong University of Technology, Zibo 255049, China
 
2  Institute of Water Resources and Hydro-Electric Engineering, Xi'an University of Technology, Xi'an 710048, China
 
3  State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Acad. of Sci., Yangling 712100, China
 
 
 Corresponding author:  Wang, Q. (wquanjiu@163.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  63-68
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to alleviate the shortage of freshwater resources and adjust the usage of water resources reasonable in North China Plain, experiments were carried out to study the stage water shortage of fresh water in Nanpi ecological experimental station of Chinese Academy of Science in Hebei Province. The results showed that, the crop would suffer water stress in both current and later growth stages when irrigation of certain growth stage was cancelled. Compared to stage water shortage, the influence of dry farming to leaf area index and yield was maximum. However, the leaf area index decrease at water shortage stage was not the largest. Instead, the decrease was significant at post water shortage stage. Taking into account of water conservation and crop growth, the influence of water shortage in grain-filling stage irrigation was minimal on both leaf area index and yield. It is concluded that stage dificiency irrigation is an important water conservation approach in fresh water resource deficient region.
 
 Number of references:  18
 
 Main heading:  Water resources
 
 Controlled terms:  Crops  -  Ecology  -  Forestry  -  Grain growth  -  Irrigation  -  Plants (botany)  -  Water conservation  -  Water supply
 
 Uncontrolled terms:  Chinese Academy of Sciences  -  Crop growth  -  Dry farming  -  Experimental stations  -  Fresh Water  -  Fresh water resources  -  Grain filling  -  Growth stages  -  Hebei Province  -  Influence of water   -  Leaf Area Index  -  North China Plain  -  Water consumption  -  Water requirement  -  Water shortages  -  Water stress  -  Winter wheat  -  Yield
 
 Classification code:  444 Water Resources  -  446.1 Water Supply Systems  -  454.3 Ecology and Ecosystems  -  461.9 Biology  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  933.1.2 Crystal Growth
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.010
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  56.     
 
 Accession number:  20105013479931
 
 Title:  Spatial pattern of soil salinity and soil salinization in area around Bohai Sea
 
 Authors:  Zhou, Zaiming1 ; Zhang, Guanghui1 ; Wang, Jinzhe1 ; Yan, Mingjiang1 
 
 Author affiliation:  1  Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China
 
 
 Corresponding author:  Zhang, G. (huanjing@heinfo.net) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 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:  The objective of this study was to characterize the spatial distribution of soil salinity variables in the low plain around the Bohai Sea, and to provide some suggestions on utilizing brackish water for agricultural irrigation and mitigating the crisis of water resources. Soil samples were collected from 127 sites in this low plain, each of them was taken from 0 to 60 cm in 5 or 10 cm increment, and soil salinity of each soil sample was analyzed. In addition, shallow groundwater depth in 130 sites and total dissolved solid of groundwater samples in 128 sites were measured. The geostatistical method combined with GIS technique was used to analyze spatial variability and distribution of soil salinity in this low plain. Results showed that the soil salinity in the surface layer was varied greatly, soil salinity in other layers was moderate degree in horizontal direction, while in the vertical direction, their differences were small. Spatial correlated distance was 35.3 km for the surface soil, while its value was increased with the depth increasing, which reached to 59.7 km for 50-60 cm soil layer. Soil salinity content showed an increasing trend from inland plain to the east coastal plain, and similar results were found in different layers. The percentages of no salinity, slight salinity and medium salinity soils for 0 to 5 cm soil layer were almost equal, while heavy salinity soil was little or no saline soil was existed from 5 to 60 cm soil layer. Generally, the main types of soil salinity were no salinity and slight salinity, so it is suitable for irrigation to exploit the shallow brackish water in some extents.
 
 Number of references:  30
 
 Main heading:  Soil surveys
 
 Controlled terms:  Groundwater  -  Groundwater resources  -  Irrigation  -  Salinity measurement  -  Soils
 
 Uncontrolled terms:  Bohai Sea  -  Geo-statistics  -  Soil salinity  -  Soil salinization  -  Spatial variability
 
 Classification code:  444.2 Groundwater  -  483.1 Soils and Soil Mechanics  -  821.3 Agricultural Methods
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.003
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  57.     
 
 Accession number:  20105013479988
 
 Title:  Low-temperature spray drying performance of laboratory spray dryer for bovine colostrum powder
 
 Authors:  Yu, Huaning1, 2 ; Abdukerim, Ardil2 ; Long, Weiyun2 ; Li, Yunfei2, 3 
 
 Author affiliation:  1  Institute of Refrigeration and Cryogenic Engineering, Shanghai Jiaotong University, Shanghai 200240, China
 
2  Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China
 
3  Bor S. Luh Food safety Research Center, Shanghai Jiaotong University, Shanghai 200240, China
 
 
 Corresponding author:  Li, Y. (yfli@sjtu.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  361-366
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  To improve product recovery of bovine colostrum powder, spray dryer's thermal efficiencies and collection conditions of bovine colostrum powder during low-temperature spray drying were investigated, by choosing inlet air temperature, compressed air flow rate and drying air flow rate as independent variables, and measuring outlet air temperature, residue accumulation on different parts of dryer and product recovery. It could be concluded that outlet air temperature was directly proportional to three independent variables, overall thermal efficiency and evaporative efficiency varied from 47.23% to 66.68%, from 58.59% to 82.76%, respectively, and they decreased as drying air flow rate and compressed air flow rate increased. Results also indicated that residue accumulation increased as drying air flow rate increased and compressed air flow rate decreased; product recovery decreased as compressed air flow rate and compressed air flow rate increased. Residue accumulation, product recovery and product loss were significantly affected by three drying parameters. The optimal drying process parameters obtained were as follows: inlet air temperature of 110°C, compressed air flow rate of 300 L/h, and drying air flow rate of 0.78 m3/min in this experiment. The results were expected to provide some fundamental data for the industrial production of bovine colostrum powder.
 
 Number of references:  18
 
 Main heading:  Inlet flow
 
 Controlled terms:  Atmospheric temperature  -  Cold storage  -  Compressed air  -  Curing  -  Dryers (equipment)  -  Parameter estimation  -  Pneumatics  -  Pressure vessels  -  Recovery  -  Spray drying   -  Thermal load
 
 Uncontrolled terms:  Bovine colostrum  -  Drying air  -  Drying parameters  -  Drying performance  -  Drying process  -  Independent variables  -  Industrial production  -  Inlet air temperatures  -  Low temperatures  -  Outlet air   -  Product recovery  -  Residue accumulation  -  Spray dryers  -  Thermal efficiency
 
 Classification code:  815.1 Polymeric Materials  -  804 Chemical Products Generally  -  802.1 Chemical Plants and Equipment  -  731.1 Control Systems  -  694.4 Storage  -  822.2 Food Processing Operations  -  643.1 Space Heating  -  631.1 Fluid Flow, General  -  619.2 Tanks  -  531 Metallurgy and Metallography  -  443.1 Atmospheric Properties  -  632.3 Pneumatics
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.060
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  58.     
 
 Accession number:  20105013479965
 
 Title:  Estimation of regional evapotranspiration by remote sensing data considering topographic effects
 
 Authors:  Gao, Yongnian1 ; Gao, Junfeng1 ; Zhang, Wanchang2 ; Xia, Ting1, 3 
 
 Author affiliation:  1  Nanjing Institute of Geography and Limnology, Chinese Acad. of Sci., Nanjing 210008, China
 
2  Center for Hydro-Sciences Research, Nanjing University, Nanjing 210093, China
 
3  College of Environment, Nanjing University of Technology, Nanjing 210002, China
 
 
 Corresponding author:  Gao, Y. (yngao@niglas.ac.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  218-223
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  Spatial distribution of the surface energy fluxes in rugged terrain differs from that in flat terrain due to the difference in surface slope, aspect, soil type, and vegetation, etc., which results in difficulties for the parameterization schemes to compute the instantaneous net radiation available for sloped lands. Estimates of evapotranspiration are determined by the accuracy of retrieved instantaneous net radiation. In order to quantitatively characterize the impact of the irregular rugged surface on evapotranspiration pattern, the Huachi county, Qingcheng county, Zhenyuan county, Xifeng district and Heshui county in the junction of Shanxi, Gansu and Ningxia provinces covered by Landsat-7128/35 image were selected as the research area to calculate the evapotranspiration considering the topographic effects in this paper, and the energy balance model was used to estimate the evapotranspiration based on Landsat-7 image, in which the parameterization schemes for calculating the instantaneous solar shortwave radiation and surface longwave radiation were improved by taking the variations in slope and aspect of land surface into consideration. In addition to that, the preferred calculation scheme of soil heat flux and parameterization scheme of sensible heat flux such as displacement height, roughness length for momentum, roughness length for heat, the diabatic correction factors for momentum and heat were adopted in terms of specific terrain surface conditions of the study area. Then, the instantaneous evapotranspiration was calculated and compared with the calculated values using N'95 two source energy balance model. And then the spatial pattern of the instantaneous evapotranspiration was analyzed. The results showed that the retrieved instantaneous evapotranspiration using the proposed estimate schemes was in good correlation with that estimated using modified TSEB model, and the correlation coefficient reached 0.9801 with the coefficient of determination 0.9606. The slope of the line fitted to the two estimated instantaneous evapotranspiration values was 0.9301, close to 1. This indicates that the method is reasonable for the accurate estimation of instantaneous evapotranspiration in rugged terrain area.
 
 Number of references:  33
 
 Main heading:  Evapotranspiration
 
 Controlled terms:  Energy balance  -  Estimation  -  Forestry  -  Heat flux  -  Landforms  -  Parameterization  -  Radiation effects  -  Remote sensing  -  Soils  -  Solar energy   -  Surface chemistry  -  Water supply
 
 Uncontrolled terms:  Accurate estimation  -  Calculated values  -  Calculation scheme  -  Coefficient of determination  -  Correction factors  -  Correlation coefficient  -  Diabatic  -  Energy balance models  -  Flat terrains  -  Good correlations   -  Land surface  -  LANDSAT  -  LandSat 7  -  Long-wave radiation  -  Net radiation  -  Parameterization schemes  -  Regional evapotranspiration  -  Remote sensing data  -  Research areas  -  Roughness length   -  Rugged terrain  -  Sensible heat flux  -  Short-wave radiation  -  Soil heat flux  -  Soil types  -  Spatial distribution  -  Spatial patterns  -  Study areas  -  Surface energy fluxes  -  Surface slope   -  Terrain surfaces  -  Topographic effects  -  Two-source energy balance model
 
 Classification code:  931 Classical Physics; Quantum Theory; Relativity  -  921 Mathematics  -  821.0 Woodlands and Forestry  -  801.4 Physical Chemistry  -  744 Lasers  -  731.1 Control Systems  -  711 Electromagnetic Waves  -  641.2 Heat Transfer  -  615.2 Solar Power  -  483.1 Soils and Soil Mechanics  -  481.1 Geology  -  446.1 Water Supply Systems  -  444.1 Surface Water
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.037
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  59.     
 
 Accession number:  20105013479963
 
 Title:  Monitoring of winter wheat area by remote sensing based on Cokriging
 
 Authors:  Fan, Lei1, 2 ; Cheng, Yongzheng1 ; Zheng, Guoqing1 ; Wang, Laigang1 ; Liu, Ting1 
 
 Author affiliation:  1  Agricultural Economy and Information Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
 
2  College of Information and Management Sciences, Henan Agricultural University, Zhengzhou 450002, China
 
 
 Corresponding author:  Fan, L. (fanlei@hnagri.org.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  206-211
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  149 wheat sampling frames were chose in winter wheat planting area, the influence factors which could reflect planting structure, the degree of field regulation and terrain were measured by Differential GPS. One of the three factors was determined as the main variable and the others as assistant variables by quantified. Two interpolation methods (ordinary Kriging and Cokriging) were applied in study area for interpolation, and the results were compared with each other in terms of their accuracy. It indicated that the root-mean-square error produced based on Cokriging decreased by1.48% compared with the ordinary Kriging under the same sampling numbers, and correlation coefficient between the predicted value and the measured value increased by 6.82%. Distribution of winter wheat planting area proportion made by Cokriging interpolation method, can correct regional large-scale remote sensing monitoring results.
 
 Number of references:  29
 
 Main heading:  Interpolation
 
 Controlled terms:  Remote sensing
 
 Uncontrolled terms:  Co-Kriging  -  Correlation coefficient  -  Differential GPS  -  Influence factors  -  Interpolation method  -  Ordinary kriging  -  Remote sensing monitoring  -  Root-mean square errors  -  Study areas  -  Winter wheat
 
 Classification code:  731.1 Control Systems  -  921.6 Numerical Methods
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.035
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  60.     
 
 Accession number:  20105013479933
 
 Title:  Impact of slope biological regulated measures on soil water infiltration
 
 Authors:  Huang, Jun1 ; Wu, Pute2, 3 ; Zhao, Xining2, 3 
 
 Author affiliation:  1  College of Water Resources and Architecture Engineering, Northwest Sci.-Technol. University of Agriculture and Forestry, Yangling 712100, China
 
2  National Engineering Research Center for Water Saving Irrigation at Yangling, Yangling 712100, China
 
3  Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
 
 
 Corresponding author:  Wu, P. (gjzwpt@vip.sina.com) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  29-37
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  In order to research the impact of rainfall intensity, slope, vegetation coverage and the interaction between multiple factors on the soil infiltration, the soil infiltration law was researched under different biological regulated measures through the artificial simulated rainfall. The results indicated that the stable infiltration rate of hillslope with biological regulated measures was larger than those of hillslope without biological regulated measures, and the difference was extremely significant, however, the differences were not obvious among those hillslope with biological regulated measures. It was not a simple linear single-valued function between rainfall intensity, slope and the soil stable infiltration rate. There were critical rainfall intensity and critical slope to make the soil stable infiltration rate reach a maximum. The increasing speed of the stable infiltration rate with the increasing of vegetable coverage was not constantly, there was a critical vegetable coverage. Before the critical vegetation coverage, the increasing speed of the stable infiltration rate was very fast, while after that, the increasing speed of the stable infiltration rate reduced quickly and tended to stabilization. Runoff regulating degree decreased with the increasing of rainfall intensity. The sequencing of runoff regulating degree under different control measures in the same rainfall intensity was as follow: ryegrass> wheat> alfalfa> Bare. On that basis, by the stepwise regression analysis, the impacts of each factor and the interaction between the various factors on the stable infiltration were analyzed by using the t test to eliminate the item of independent variable insignificant, and a multiple non-linear model including rainfall intensity, slope and vegetation coverage was established. Finally, the measured data were used to prove this model fitness and feasibility.
 
 Number of references:  27
 
 Main heading:  Soil mechanics
 
 Controlled terms:  Biofiltration  -  Moisture determination  -  Rain  -  Regression analysis  -  Runoff  -  Seepage  -  Soil moisture  -  Underwater soils  -  Vegetables  -  Vegetation
 
 Uncontrolled terms:  Artificial simulated rainfall  -  Biological regulated measures  -  Control measures  -  Critical rainfall  -  Hillslopes  -  Independent variables  -  Infiltration rate  -  Measured data  -  Multiple factors  -  Non-linear model   -  Rainfall intensity  -  Single valued functions  -  Slope  -  Soil infiltration  -  Soil water  -  Stepwise regression analysis  -  T-tests  -  Vegetation coverage
 
 Classification code:  922.2 Mathematical Statistics  -  821.4 Agricultural Products  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  483.1 Soils and Soil Mechanics  -  944.2 Moisture Measurements  -  452 Municipal and Industrial Wastes; Waste Treatment and Disposal  -  443.3 Precipitation  -  441 Dams and Reservoirs; Hydro Development  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  444.1 Surface Water
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.005
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  61.     
 
 Accession number:  20105013479943
 
 Title:  Design of capacitance seed rate sensor of wheat planter
 
 Authors:  Zhou, Liming1 ; Zhang, Xiaochao1 ; Yuan, Yanwei2 
 
 Author affiliation:  1  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
 
2  State Key Laboratory of Soil, Plant and Machine System Technology, Beijing 100083, China
 
 
 Corresponding author:  Zhang, X. (zxc@caams.org.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  99-103
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  To improve the measurement reliability of the seed rate on wheet planter, a capacitance seed rate sensor was developed according to the principle of capacitance variation of medium mass. The signal condition circuit as designed with AD7745 convert and a single chip microcomputer, and short line connection betweent the sensor and conditon circuit was used to decrease the stray capacitance of the sensor. The founction relationship between the sensor capacitance and seed rate was obtained according to the calibration. The results showed that the maximum error of the sensor was 2.2% in different seeding rate. The sensor can test the seed rate well on line and provide strong support for variable seeding.
 
 Number of references:  16
 
 Main heading:  Sensors
 
 Controlled terms:  Capacitance  -  Design  -  Seed
 
 Uncontrolled terms:  Capacitance variation  -  Maximum error  -  Seed rate  -  Seeding rate  -  Sensor capacitance  -  Signal condition  -  Single chip microcomputers  -  Stray capacitances  -  Wheat planter
 
 Classification code:  408 Structural Design  -  701.1 Electricity: Basic Concepts and Phenomena  -  801 Chemistry  -  821.4 Agricultural Products
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.015
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  62.     
 
 Accession number:  20105013479990
 
 Title:  Process optimization of preparation of clarified blackberry juice using two commercial enzymes
 
 Authors:  Zhang, Lixia1, 2 ; Zhou, Jianzhong2 ; Liu, Hongjin2 ; Huang, Kaihong2 ; Gu, Zhenxin1 
 
 Author affiliation:  1  College of Food Science and Technology, Nanjing Agriculture University, Nanjing 210095, China
 
2  Institute of Farm Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
 
 
 Corresponding author:  Gu, Z. (guzx@njau.edu.cn) 
 
 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 
 Abbreviated source title:  Nongye Gongcheng Xuebao
 
 Volume:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  372-376
 
 Language:  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 aim of this study was to optimize parameters (enzyme additive amount, enzyme hydrolyzing time and enzyme hydrolyzing temperature) for enhancing the blackberry juice yield by using response surface method (RSM) with the treatment of the mixture of pectinase and multiplexed pectinase. Taking the juice yield as indexes, the conditions of enzymatic treatment were optimized by using response surface method (RSM). With the optimal treatment with the mixture of pectinase and multiplexed pectinase preparation, the maximal juice yield was obtained. The results showed that the optimal enzymatic treatment conditions were as follows: the ratio of the two enzyme's activity was 1:1, the enzyme additive amount was 0.13%, the enzyme hydrolyzing temperature was 42.6°C and the enzyme hydrolyzing time was 2.5 h. Under these conditions, the maximal juice yield was 79.5%, the anthocyanins content of the juice was 676.24 mg/L, the soluble solid content was 9.0%, turbidity was decreased, acidity was increased, no pectin included and its quality was improved remarkably.
 
 Number of references:  17
 
 Main heading:  Parameter estimation
 
 Controlled terms:  Agricultural products  -  Clarification  -  Clarifiers  -  Enzyme activity  -  Enzymes  -  Hydrolysis  -  Multiplexing  -  Optimization  -  Surface properties  -  Turbidity
 
 Uncontrolled terms:  Blackberry  -  Blackberry juice  -  Commercial enzymes  -  Enzymatic treatments  -  Juice yield  -  Optimal treatment  -  Pectinases  -  Process optimization  -  Response surface method  -  Soluble solid content
 
 Classification code:  951 Materials Science  -  921.5 Optimization Techniques  -  821.4 Agricultural Products  -  802 Chemical Apparatus and Plants; Unit Operations; Unit Processes  -  741.1 Light/Optics  -  731.1 Control Systems  -  718 Telephone Systems and Related Technologies; Line Communications  -  717 Optical Communication  -  716 Telecommunication; Radar, Radio and Television  -  461.9 Biology  -  461.2 Biological Materials and Tissue Engineering
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.062
 
 Database:  Compendex
 
   Compilation and indexing terms, © 2010 Elsevier Inc.
 
 
   Full-text and Local Holdings Links
 
 
 
  63.     
 
 Accession number:  20105013479984
 
 Title:  Emergy-based analysis of expost benefits of land exploitation and consolidation
 
 Authors:  Zhao, Junrui1, 2 ; Zhu, Daolin1 
 
 Author affiliation:  1  Department of Management of Land Resources, China Agricultural University, Beijing 100193, China
 
2  Land Resources Management of Zibo City, Shandong Province, Zibo 255000, 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:  26
 
 Issue:  10
 
 Issue date:  October 2010
 
 Publication year:  2010
 
 Pages:  337-344
 
 Language:  Chinese
 
 ISSN:  10026819
 
 CODEN:  NGOXEO
 
 Document type:  Journal article (JA)
 
 Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
 
 Abstract:  The analysis on expost benefits is regarded as an essential contributor to sustainable development of land exploitation and consolidation. In order to improve efficiency evaluation index system on expost benefits of land exploitation and consolidation project, Yangyu Valley regional land consolidation project in Zibo City, Shandong Province, was taken as a sample for empirical research. The solar energy of factors before and after land consolidation and eco-efficiency of land consolidation were calculated by the emergy theory. The results indicated that, after the project carried out, the land use structure of the project area had changed and the total emergy input-output ratio had increased. The economic and social benefits were significant. But since large uncultivated land had been developed in project area, it reduced the land environmental loading index and energy-based sustainable index. From the results, it can be concluded that, it is necessary to reduce the uncultivated land development and increase the land consolidation, and to protect the biodiversity to the largest extent and keep the stability of the ecological and economic systems.
 
 Number of references:  26
 
 Main heading:  Planning
 
 Controlled terms:  Biodiversity  -  Ecology  -  Land use  -  Regional planning  -  Solar energy  -  Sustainable development
 
 Uncontrolled terms:  Before and after  -  Consolidation projects  -  Eco-efficiency  -  Economic and social benefits  -  Economic system  -  Efficiency evaluation  -  Emergy analysis  -  Empirical research  -  Environmental loadings  -  Expost benefits evaluation   -  Index  -  Input-output ratio  -  Land consolidations  -  Land development  -  Land exploitation and consolidation sustainable development  -  Shandong province
 
 Classification code:  911.2 Industrial Economics  -  615.2 Solar Power  -  461 Bioengineering and Biology  -  454.3 Ecology and Ecosystems  -  454 Environmental Engineering  -  403.2 Regional Planning and Development  -  403 Urban and Regional Planning and Development
 
 DOI:  10.3969/j.issn.1002-6819.2010.10.056
 
 Database:  Compendex