1. Accession number: 20094512421249
Title: Profit and loss analysis on ecosystem services value based on land use change in Yellow River Delta
Authors: Wu, Daqian1 ; Liu, Jian2 ; He, Tongli1 ; Wang, Shujun1 ; Wang, Renqing1, 2
Author affiliation: 1 Colleague of Life Science,
2
Corresponding author: Wang, R. (wrq@sdu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 256-261
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: With the aim to investigate variations in ecosystem services in response to land use changes, techniques of remote sensing and geographic information system were integrated into the evaluation model to calculate the ecosystem services value in the Yellow River Delta from 1992 to 2005. The results indicated that the total ecosystem services value in 1992, 1996, 2001 and 2005 were 48.75×108, 49.75×108, 58.18×108 and 49.22×108 yuan, respectively. Tide land, shrub and grass land, and water body were the land use types that made the greatest contributions to the total ecosystem services value of the study region. The accumulative ecosystem services value of three land use types accounted for over 80% of the total value in the Yellow River Delta, indicating that these land use categories played important and remarkable roles in ecosystem services in the study region. The land use pattern of the Yellow River Delta in 2010 was predicted using the Markov model. The predicted total ecosystem services value in 2010 would reach 47.77×108 yuan. The total ecosystem services value might decrease further if the encroachment of coastline was taken into account.
Number of references: 18
Main heading: Ecosystems
Controlled terms: Geographic information systems - Land use - Markov processes - Optical losses - Profitability - Remote sensing - Rivers
Uncontrolled terms: Ecosystem services - Ecosystem services value - Environment engineering - Evaluation models - Land use pattern - Land use type - Land-use change - Markov model - Profit and loss - Total values - Waterbodies - Yellow River Delta
Classification code: 922.1 Probability Theory - 911.2 Industrial Economics - 903.3 Information Retrieval and Use - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 723.3 Database Systems - 454.3 Ecology and Ecosystems - 444.1 Surface Water - 442.2 Land Reclamation - 407.2 Waterways - 403 Urban and Regional Planning and Development
DOI: 10.3969/j.issn.1002-6819.2009.08.046
Database: Compendex
2. Accession number: 20094512421250
Title: Farmland classification based on data mining classification method
Authors: Wang, Lu1, 2 ; Tian, Jian3 ; Liu, Jianmin3
Author affiliation: 1 College of Informatics,
2 Guangzhou Institute of Geochemistry, Chinese Acad. of Sci.,
3
Corresponding author: Wang, L. (selinapple@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 262-267
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Decision tree, BP neural network, and logistic model were used to explored farmland classification of Longchuan Country. The effectiveness of results was analyzed. Confusion matrix was adapted to probe into accuracy of the classification. The results showed that the influences of the number of samples were different to three models. With more training samples, BP neural network and decision tree had heavier influence and higher accuracy in comparison with logistic model. Besides of three models, BP neural network had the highest accuracy and needed a longer time to train model with poor interpretation; decision tree had higher accurate and good interpretation; Logistic model performed worst, Therefore, decision tree might be the best model for farmland classification in Longchuan Country. So data mining classification is an effective and exact method for farmland evaluation, which will enhance the precision and accuracy of land evaluation, and is of significance for the optimization of farmland classification method.
Number of references: 19
Main heading: Classification (of information)
Controlled terms: Decision trees - Developing countries - Farms - Neural networks - Speech recognition
Uncontrolled terms: Best model - BP - BP neural networks - Classification - Classification methods - Confusion matrices - Exact methods - Farmland classification - Land evaluation - Logistic models - Number of samples - Three models - Train model - Training sample
Classification code: 922 Statistical Methods - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 912.1 Industrial Engineering - 903.1 Information Sources and Analysis - 901.4 Impact of Technology on Society - 961 Systems Science - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 723.5 Computer Applications - 723.4 Artificial Intelligence - 716.1 Information Theory and Signal Processing - 461.1 Biomedical Engineering - 751.5 Speech
DOI: 10.3969/j.issn.1002-6819.2009.08.047
Database: Compendex
3. Accession number: 20094512421207
Title: Soil moisture detection based on data fusion between near-infrared spectroscopy and machine vision
Authors: Xiao, Wu1 ; Li, Xiaoyu1 ; Li, Peiwu2 ; Feng, Yaoze1 ; Wang, Wei1 ; Zhang, Jun1
Author affiliation: 1 College of Engineering and Technology,
2 Oil Crops Research Institute,
Corresponding author: Li, X. (lixiaoyu@mail.hzau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 14-17
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The aim was to find out a way to accurately, rapidly and stably measure soil moisture and extend the model adaptation. Data fusion technology of machine vision (MV) and near-infrared spectroscopy (NIRS) was introduced to analyze soil moisture. Three kinds of soils (paddy soil, yellow brown soil and tidal soil) were collected from
Number of references: 17
Main heading: Geologic models
Controlled terms: Computer vision - Data fusion - Groundwater - Information fusion - Infrared devices - Infrared spectroscopy - Infrared transmission - Mathematical models - Moisture determination - Near infrared spectroscopy - Neural networks - Permittivity - Personal communication systems - Soil moisture - Soil surveys - Spectroscopic analysis - Spectrum analysis - Textiles - Water analysis
Uncontrolled terms: BP neural network - Brown soil - Fusion technology - Home networks - Hubei Province - Image parameters - Loess soils - Machine vision - Model Adaptation - Model errors - Neural network model - Paddy soils - Prediction model - Sample sets - Soil moisture analysis - Soil surfaces - Validation analysis - Water samples
Classification code: 922.2 Mathematical Statistics - 921 Mathematics - 903.1 Information Sources and Analysis - 819 Synthetic and Natural Fibers; Textile Technology - 801 Chemistry - 741.3 Optical Devices and Systems - 741.2 Vision - 931.2 Physical Properties of Gases, Liquids and Solids - 944.2 Moisture Measurements - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.4 Optical Variables Measurements - 941 Acoustical and Optical Measuring Instruments - 931.3 Atomic and Molecular Physics - 741.1 Light/Optics - 701 Electricity and Magnetism - 483.1 Soils and Soil Mechanics - 481.1 Geology - 461.1 Biomedical Engineering - 445.2 Water Analysis - 444.2 Groundwater - 406.2 Roads and Streets - 708.1 Dielectric Materials - 731.6 Robot Applications - 723.5 Computer Applications - 723.4 Artificial Intelligence - 723.2 Data Processing and Image Processing - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television
DOI: 10.3969/j.issn.1002-6819.2009.08.003
Database: Compendex
4. Accession number: 20094512421213
Title: Soil moisture consumption and ecological effects in alfalfa grasslands in longdong area of loess plateau
Authors: Hu, Shoulin1 ; Jia, Zhikuan2 ; Wan, Sumei1
Author affiliation: 1 College of Plant Sciences,
2 Research Center of Dryland Farming in Arid and Semi-arid Area, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author: Jia, Z. (jiazhk@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 48-53
Language: English
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Soil desiccation is the most serious problem, which leads to widespread land degradation in the Loess Plateau of China. Hence, it has important theoretical significance to study the consumption patterns of soil moisture in alfalfa grasslands so as to realize sustainable agricultural development and ecological environment rehabilitation in the entire Loess Plateau. Changes of soil moisture characteristics in 0
Number of references: 18
Main heading: Soil moisture
Controlled terms: Agriculture - Ecology - Groundwater - Moisture determination - Permittivity
Uncontrolled terms: Alfalfa - Consumption patterns - Crop rotation - Dry soil layer - Ecological effect - Ecological environments - Grasslands - Land degradation - Loess Plateau - Negative impacts - Sustainable agricultural development
Classification code: 944.2 Moisture Measurements - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 708.1 Dielectric Materials - 701 Electricity and Magnetism - 483.1 Soils and Soil Mechanics - 454.3 Ecology and Ecosystems - 444.2 Groundwater
DOI: 10.3969/j.issn.1002-6819.2009.08.009
Database: Compendex
5. Accession number: 20094512421240
Title: Rheological properties of several kinds of feedstocks for anaerobic fermentation and their influencing factors
Authors: Liu, Yi1 ; Deng, Liangwei1 ; Wang, Zhiyong1
Author affiliation: 1 Biogas Scientific Research Institute of the Ministry of Agriculture,
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: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 204-209
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to provide a theoretical basis for selecting apparatus and designing processes of anaerobic fermentation, rheological properties of six kinds of feedstock were investigated, and rheological parameters were evaluated at different total solid concentrations, temperatures and fermentation time. The experimental results showed that the six kinds of manures behaved like pseudoplastic fluid and followed the power law model, and the flow behavior index decreased with the increase of concentration. The viscosities of duck manure, cattle manure and chicken manure decreased linearly with the increase of temperature, and the flow behavior index increased. The viscosities of pig manure, sheep manure and rabbit manure reduced at first, and then increased. The calculated activation energy of duck manure, cattle manure and chicken manure were 8.018, 11.337 and 8.285 kJ/mol, respectively. With the processes of fermentation, the viscosity of duck manure declined in the basic trends and showed similar changes with total solids. The viscosities of pig, sheep and cattle manures showed an upward trend, and the change trends of chicken and rabbit viscosities were not obvious.
Number of references: 18
Main heading: Manures
Controlled terms: Activation energy - Agriculture - Feedstocks - Fermentation - Fertilizers - Flow fields - Fluid dynamics - Meats - Rheology - Viscometers - Viscosity - Wool
Uncontrolled terms: Anaerobic fermentation - Cattle manures - Chicken manure - Designing process - Duck manure - Flow behavior index - Influencing factor - Livestock manures - Pig manures - Power law model - Pseudoplastic fluid - Rheological parameter - Rheological properties - Rheological property - Sheep manure - Theoretical basis - Total solid concentrations - Total solids - Upward trend
Classification code: 819.1 Natural Fibers - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.2 Agricultural Chemicals - 821.4 Agricultural Products - 943.3 Special Purpose Instruments - 821.5 Agricultural Wastes - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 822.3 Food Products - 805.1.1 Biochemical Engineering - 804 Chemical Products Generally - 452.3 Industrial Wastes - 461.8 Biotechnology - 513.3 Petroleum Products - 631.1 Fluid Flow, General - 801.2 Biochemistry - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals
DOI: 10.3969/j.issn.1002-6819.2009.08.037
Database: Compendex
6. Accession number: 20094512421239
Title: Evaluation and analysis of net emergy yield of two bio-energy stations in
Authors: Hu, Yanxia1 ; Zhou, Liandi1 ; Li, Hong1 ; Wang, Ailing1 ; Shi, Dianlin2 ; Wang, Yu2 ; Yan, Maochao3
Author affiliation: 1 Institute of Integrated Development of Agriculture, Beijing Academy of Agriculture and Forestry Sciences,
2 Rural Energy Sources and Environment Department,
3 Institute of Geographical Science and Natural Research, Chinese Acad. of Sci.,
Corresponding author: Zhou, L. (liandizhou@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 200-203
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Based on emergy method, the paper evaluated emergy input and output of middle straw gasification stations and biogas stations in
Number of references: 15
Main heading: Biomass
Controlled terms: Biogas - Competition - Gas generators - Gasification - Structural panels
Uncontrolled terms: Bio-energy - Bio-mass energy - Biomass resources - Economic competitiveness - Emergy method - Emergy yield ratio - Input and outputs - Local conditions - Net energy yield ratio
Classification code: 821.5 Agricultural Wastes - 805.1.1 Biochemical Engineering - 802.3 Chemical Operations - 911.2 Industrial Economics - 802.1 Chemical Plants and Equipment - 522 Gas Fuels - 408.2 Structural Members and Shapes - 525.1 Energy Resources and Renewable Energy Issues
DOI: 10.3969/j.issn.1002-6819.2009.08.036
Database: Compendex
7. Accession number: 20094512421217
Title: Characteristics of side-sway joint based on flexible pneumatic actuator
Authors: Zhang, Libin1 ; Wang, Zhiheng1 ; Bao, Guanjun1 ; Qian, Shaoming1 ; Yang, Qinghua1
Author affiliation: 1 Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Edu., Zhejiang University of Technology,
Corresponding author: Zhang, L.
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 71-77
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Based on flexible pneumatic actuator (FPA), a new kind of flexible pneumatic side-sway joint was proposed. The side-sway joint is used for designing agricultural dexterous robot multi-fingered hand. The side-sway joint is basically composed of two FPAs. When the two FPAs were inflated with different compressed air pressure, the side-sway joint could realize left and right movement. The force equilibrium equation of the FPA free end was established. The static model of the side-sway joint was obtained, and the static model was also simplified. Experiments were carried out to verify the static model. Experimental results show that the experimental curve matched well with the simulated curve, and there was certain error between them (maximal static error is 0.035 rad). The error cause was analyzed. Then the experiments were carried out to measure the dynamic performances of the side-sway joint. Experimental results show that the step response time of the joint was about 2 s (steady value''s tolerance zone Δ=5%) respected to different expected angle step signals. The side-sway joint can significantly increase the workspace and further improve the adaptability and dexterity of the agricultural dexterous robot hand.
Number of references: 21
Main heading: Robotic arms
Controlled terms: Actuators - Atmospheric pressure - Cold storage - Compressed air - Experiments - Fits and tolerances - Focal plane arrays - Pneumatic equipment - Pneumatics
Uncontrolled terms: Dexterous robot hand - Dexterous robots - Dynamic performance - Experimental curves - Flexible pneumatic actuator - Force equilibrium equations - Free end - Joints - Multifingered hands - Static error - Static model - Step signal - Tolerance zones
Classification code: 731.5 Robotics - 731.6 Robot Applications - 732.1 Control Equipment - 731.2 Control System Applications - 804 Chemical Products Generally - 902.2 Codes and Standards - 941.4 Optical Variables Measurements - 901.3 Engineering Research - 694.4 Storage - 601 Mechanical Design - 602.1 Mechanical Drives - 632 Hydraulics, Pneumatics and Related Equipment, and Fluidics - 443.1 Atmospheric Properties - 632.3 Pneumatics - 644.3 Refrigeration Equipment and Components - 657.2 Extraterrestrial Physics and Stellar Phenomena - 632.4 Pneumatic Equipment and Machinery
DOI: 10.3969/j.issn.1002-6819.2009.08.013
Database: Compendex
8. Accession number: 20094512421238
Title: Effect of household biogas project development on farmland nutrient flow
Authors: Tang, Yunchuan1 ; Zhang, Weifeng1 ; Zhang, Fusuo1 ; Ma, Wenqi2
Author affiliation: 1 College of Resources and Environmental Sciences,
2
Corresponding author: Tang, Y. (wfzhang@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 192-199
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The method of nutrient flow was adopted to compare farmers' nutrient management behaviors in 2007 between biogas and non-biogas farmer's household in 13 investigated sites which included Sichuan, Guangxi, Heibei, et al. provinces. The results showed the total amount of nutrient for putting was only
Number of references: 38
Main heading: Nutrients
Controlled terms: Biogas - Crops - Fertilizers - Manures - Recycling
Uncontrolled terms: Biogas plants - Chemical fertilizers - Crop fields - Crop residue - Farmers' behavior - Guangxi - In-field - Nutrient cycling - Nutrient flows - Nutrient loss - Nutrient management - Nutrient recycling - Organic nutrients - Project development - Recycle use - Sichuan
Classification code: 822.3 Food Products - 821.5 Agricultural Wastes - 821.4 Agricultural Products - 821.2 Agricultural Chemicals - 804 Chemical Products Generally - 522 Gas Fuels - 461.9 Biology - 454.3 Ecology and Ecosystems - 452.3 Industrial Wastes
DOI: 10.3969/j.issn.1002-6819.2009.08.035
Database: Compendex
9. Accession number: 20094512421225
Title: Restraint effectiveness of two-point seat belts in rollover accidents of engineering vehicles
Authors: Wei, Xiuling1, 2 ; Wang, Guoqiang1 ; Hao, Wanjun1 ; Zhang, Yingshuang1 ; Zhang, Xianyu2 ; Wang, Jixin1
Author affiliation: 1 College of Mechanical Science and Engineering,
2 Department of Aeronautic Mechanical Engineering,
Corresponding author: Wang, J. (jxwang@jlu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 119-123
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: A simulation model for a certain engineering vehicle was established to analyze the dynamic response of the operator in the accident of 90° lateral rollover. The motions of 50th percentile and 95th percentile human body model were simulated under these conditions: with and without wearing lap belt; with and without armrests. The restraint effectiveness of lap belt for different human sizes and the relationship between it and armrests were simulated by the established model. The results show that wearing a lap belt can reduce the likelihood of serious injury caused by operator ejection from the vehicle; the head and upper torso excursion for the larger operator model greatly increase the risk of interaction with hazardous features in the cab. When wearing a lap belt, the armrests tend to reduce the amount of head excursion and the severity of the head impact with the internal features of the cab, so the restraint effectiveness is better.
Number of references: 16
Main heading: Simulators
Controlled terms: Accidents - Dynamic response - Vehicles
Uncontrolled terms: Engineering vehicle - Lap belt - Restraint effectiveness - Rollover - Simulation
Classification code: 914.1 Accidents and Accident Prevention - 671 Naval Architecture - 662.1 Automobiles - 657.1 Solar Energy and Phenomena - 655.2 Satellites - 654.1 Rockets and Missiles - 621 Nuclear Reactors - 432 Highway Transportation - 408.1 Structural Design, General
DOI: 10.3969/j.issn.1002-6819.2009.08.022
Database: Compendex
10. Accession number: 20094512421248
Title: Characteristic analysis of spatio-temporal pattern evolution of land use in
Authors: Gong, Wenfeng1 ; Kong, Da1 ; Fan, Wenyi2 ; Wang, Xiaofeng1
Author affiliation: 1 College of Hydraulic and Electrical Engineering,
2
Corresponding author: Fan, W. (fanwy@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 249-255
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Based on the data of Landsat TM/ETM+ and field data in 1996 and 2005, land use changes were analyzed by ArcGIS, and the spatio-temporal changes of the land use pattern in Harbin region of Songhuajiang watershed were investigated. The results showed that: the spatial position conversion area of the land use was less than its quantitative change. The area order of land use changes was forestland>cultivated land>grassland>water body>unused land>construction land. The dynamic conversion process of land use was dominated by cultivated land-forestland, grassland-forestland and unused land-forestland, where the interconversion of cultivated land-forestland was at high frequency. The forestland, water area and construction land had high retention rates, and the grassland, unused land and cultivated land had high conversion rates. The forestland-cultivated land and grassland-cultivated land were main land conversion types in the area of 300
Number of references: 27
Main heading: Land use
Controlled terms: Agriculture - Deforestation - Landforms - Oceanography - Remote sensing - Strategic planning - Surface waters - Watersheds
Uncontrolled terms: Agroforestry - Characteristic analysis - Construction land - Conversion process - Conversion rates - Cultivated lands - Ecological balance - Field data - Forest land - High frequency - Interconversions - Land conversion - Land resources - Land use pattern - Land-use change - Landsat TM/ETM+ - Quantitative changes - Research areas - Retention rate - Spatial pattern - Spatial positions - Spatio-temporal changes - Spatiotemporal patterns - Water areas - Waterbodies
Classification code: 912.2 Management - 821.0 Woodlands and Forestry - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 731.1 Control Systems - 481.1 Geology - 471.1 Oceanography, General - 444.1 Surface Water - 442.2 Land Reclamation - 403 Urban and Regional Planning and Development
DOI: 10.3969/j.issn.1002-6819.2009.08.045
Database: Compendex
11. Accession number: 20094512421255
Title: Application of complex preservative on prawn anti-melanosis and preservation
Authors: Cao, Rong1, 2 ; Xue, Changhu1 ; Xu, Limin1
Author affiliation: 1 College of Food Science and Technology, Ocean University of China,
2 Yellow Sea Fisheries Research Institute,
Corresponding author: Xue, C. (xuech@mail.ouc.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 294-298
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In view of prawn melanosis, sulfite abuse and short shelf-life, a complex preservative (a mixture of chitosan and anti-melanosis material) without sulfite was developed. The effects of Trachypenaeus curvirostris preservation and anti-melanosis were verified. According to the results of orthogonal experiment L9(34), the optimum composition of chitosan
Number of references: 16
Main heading: Chitin
Controlled terms: Chemical plants - Chitosan
Uncontrolled terms: Anti-melanosis - Fresh-keeping - Shelf-life - Storage - Trachypenaeus curvirostris
Classification code: 402.1 Industrial and Agricultural Buildings - 802.1 Chemical Plants and Equipment - 804.1 Organic Compounds
DOI: 10.3969/j.issn.1002-6819.2009.08.052
Database: Compendex
12. Accession number: 20094512421251
Title: Enzymatic hydrolysis extraction and optimization of spray drying technology in processing instant longan powder
Authors: Su, Dongxiao1, 2 ; Zhang, Mingwei1, 2 ; Hou, Fangli1, 2 ; Tang, Xiaojun1 ; Wei, Zhencheng1 ; Zhang, Ruifen1 ; Chi, Jianwei1 ; Zhang, Yan1 ; Deng, Yuanyuan1
Author affiliation: 1 Key Laboratory of Functional Food, Ministry of Agriculture/Bio-Technol. Research Institute of Guangdong Academy of Agricultural Sci.,
2
Corresponding author: Zhang, M. (mwzhh@163.net)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 268-274
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to establish the processing technology of instant longan powder, the uniform design was used to optimize the enzymatic hydrolysis extraction conditions for the total soluble solids (TSS) in dried longan pulp, and the response surface methodology was used to optimize the spray drying parameters. The results showed that using dried longan pulp (13.62% moisture content) as the material, extracted with pectinase and cellulose enzyme, pH3.1, enzymatic hydrolysis temperature
Number of references: 14
Main heading: Enzymatic hydrolysis
Controlled terms: Cellulose - Curing - Dewatering - Extraction - Flavors - Moisture - Moisture determination - Optimization - Powders - Spray drying - Technology
Uncontrolled terms: Extraction conditions - Extraction rate - Feeding rate - Hot air temperature - Hot airflow - Instant longan powder - Maltodextrins - Moisture contents - Pectinases - Processing technologies - Response Surface Methodology - Spray drying technology - Total soluble solids - Uniform Design
Classification code: 813.1 Coating Techniques - 815.1 Polymeric Materials - 815.1.1 Organic Polymers - 818.3 Rubber and Elastomer Processing - 822.2 Food Processing Operations - 822.3 Food Products - 901 Engineering Profession - 921.5 Optimization Techniques - 944.2 Moisture Measurements - 812.1 Ceramics - 443.1 Atmospheric Properties - 536 Powder Metallurgy - 801.2 Biochemistry - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.1 Organic Compounds - 811.3 Cellulose, Lignin and Derivatives
DOI: 10.3969/j.issn.1002-6819.2009.08.048
Database: Compendex
13. Accession number: 20094512421208
Title: Comparison and application of several drought monitoring models in
Authors: Zhang, Xueyi1, 2 ; Li, Jianping2 ; Qin, Qiming3 ; Han, Yingjuan2 ; Zhang, Xiaoyu2 ; Wang, Lianxi1 ; Guan, Jingde2
Author affiliation: 1
2 Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction,
3 Institute of Remote Sensing and GIS,
Corresponding author: Zhang, X. (yifei_lzu@sohu.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 18-23
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Land surface temperature (LST) was obtained by MODIS data and observation data from automatic weather station on the ground. Modify temperature-vegetation dryness index (MTVDI) was studied by LST combined with MODIS-EVI. Modified energy index (MEI) was studied by channel 2 data and LST test. Vegetation coverage was introduced, and modify perpendicular drought index (MPDI) was studied by channel 1 and channel 2 data. Combined with the soil moisture data from the agro-meteorological regular observation business, statistical functions of the indexes and soil moisture were established, which were all pass the 0.01 significance test. The models had been applied to Ningxia drought monitoring business, the results showed that the monitoring effects of MTVDI and MPDI were significant in crop growing season, and MEI, PDI were effective on bare ground or sparse vegetation. Each model has its own advantage and disadvantage, and the comprehensive application of the models could achieve the best results during the actual monitoring. The accuracy could reach to 90%.
Number of references: 13
Main heading: Monitoring
Controlled terms: Atmospheric temperature - Atmospherics - Cultivation - Drought - Groundwater - Moisture determination - Permittivity - Radiometers - Soil moisture - Space time adaptive processing - Spectrometers - Vegetation - Weather information services
Uncontrolled terms: Automatic weather stations - Bare grounds - Comparative application - Drought indices - Drought monitoring - Energy indexes - Growing season - Land surface temperature - Monitoring effect - Ningxia - Observation data - Significance test - Statistical functions - Temperature-vegetation dryness indices - Vegetation coverage
Classification code: 716.4 Television Systems and Equipment - 718.1 Telephone Systems and Equipment - 741.3 Optical Devices and Systems - 801 Chemistry - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 941 Acoustical and Optical Measuring Instruments - 941.3 Optical Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 944.2 Moisture Measurements - 944.7 Radiation Measuring Instruments - 716.3 Radio Systems and Equipment - 443 Meteorology - 443.1 Atmospheric Properties - 443.3 Precipitation - 444 Water Resources - 444.2 Groundwater - 461.9 Biology - 483.1 Soils and Soil Mechanics - 525.1 Energy Resources and Renewable Energy Issues - 701 Electricity and Magnetism - 701.1 Electricity: Basic Concepts and Phenomena - 708.1 Dielectric Materials - 716.1 Information Theory and Signal Processing - 716.2 Radar Systems and Equipment
DOI: 10.3969/j.issn.1002-6819.2009.08.004
Database: Compendex
14. Accession number: 20094512421254
Title: Drying characteristics of blackcurrant pulp by microwave-assisted foam mat drying
Authors: Zheng, Xianzhe1 ; Liu, Chenghai1 ; Zhou, He1
Author affiliation: 1 College of Engineering,
Corresponding author: Zheng, X. (zhengxz2006@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 288-293
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to study the feasibility of microwave-assisted foam mat drying method for the dehydration blackcurrant pulp, a reasonable foaming additive formula was determined and the microwave-assisted foam mat drying characteristics of blackcurrant pulp were analyzed. The concentration of glyceryl monostearate (GMS) and soy protein isolated (SPI) with food grade, selected as the foaming additive, had obvious effects on the foaming properties of blackcurrant pulp. A reasonable foaming additive formula for the blackcurrant pulp with optimum expansion and high stability was developed that the 6% GMS and 3% g SPI as foam inducers and the 10 mL carboxylic methyl cellulose (CMC) with concentration of 0.5% as foam stabilizer, accompanying with the stirring time of 6 min. The experimental results of microwave assisted foam mat drying method showed that the drying intensity of foamed blackcurrant pulp increase with the increase of initial microwave intensity and the decrease of thickness of material layer. Contrasting the microwave with conventional hot air as the heat source for the foam mat drying of blackcurrant pulp, the qualities of dried blackcurrant product in terms of drying rate, color and appearance dried by microwave method are superior to that dried by the hot air. The parameters including the initial microwave intensity of 14.0 W/g and thickness of material layer of
Number of references: 18
Main heading: Drying
Controlled terms: Color - Curing - Dehydration - Dewatering - Interchanges - Microwave devices - Microwaves
Uncontrolled terms: Belt dryer - Blackcurrant pulp - Color evaluation - Concentration of - Drying characteristics - Drying intensity - Drying methods - Drying rates - Foaming additives - Foaming properties - Food grade - Glyceryl monostearate - Heat sources - High stability - Hot air - Material layers - Methyl cellulose - Microwave intensity - Microwave methods - Microwave-assisted - Soy protein - Stabilizers
Classification code: 815.1 Polymeric Materials - 802.3 Chemical Operations - 802.2 Chemical Reactions - 741.1 Light/Optics - 818.3 Rubber and Elastomer Processing - 715 Electronic Equipment, General Purpose and Industrial - 711 Electromagnetic Waves - 642.1 Process Heating - 406.1 Highway Systems - 714 Electronic Components and Tubes
DOI: 10.3969/j.issn.1002-6819.2009.08.051
Database: Compendex
15. Accession number: 20094512421206
Title: Measurement of soil water content for different soil types by using time domain transmission technology
Authors: Zheng, Rumei1 ; Li, Zizhong1 ; Gong, Yuanshi1
Author affiliation: 1 College of Resources and Environmental Sciences,
Corresponding author: Li, Z. (zizhong@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 8-13
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: According to the disadvantages of time domain reflectometry (TDR) on measuring water content for saline soils, high organic matter soils and red soils, a laboratory experiment was conducted to study the applicability of time domain transmission (TDT) instrument for measuring soil water content for different soil types. The results showed that there was a good linear relationship between soil volumetric water content and TDT voltage output for aeolian soils, cinnamon soils and fluvo-aquic soils. An uniform calibration relationship could be established for above soil types with a standard error of estimate of
Number of references: 20
Main heading: Soil testing
Controlled terms: Biogeochemistry - Biological materials - Organic compounds - Saline water - Soil moisture - Standards - Textures - Time domain analysis - Underwater soils - Water content
Uncontrolled terms: Aeolian soil - Cinnamon soil - Cubic polynomials - High organic - Laboratory experiments - Linear relationships - Organic matter content - Red soils - Saline soil - Soil types - Soil water content - Standard errors - Time Domain Reflectometry - Time domain transmission - Voltage output - Volumetric water content
Classification code: 921 Mathematics - 902.2 Codes and Standards - 804.1 Organic Compounds - 801.2 Biochemistry - 731.1 Control Systems - 933 Solid State Physics - 703.1.1 Electric Network Analysis - 481.2 Geochemistry - 471.1 Oceanography, General - 461.2 Biological Materials and Tissue Engineering - 444 Water Resources - 483.1 Soils and Soil Mechanics
DOI: 10.3969/j.issn.1002-6819.2009.08.002
Database: Compendex
16. Accession number: 20094512421226
Title: Crop planting structure extraction in irrigated areas from multi-sensor and multi-temporal remote sensing data
Authors: Cai, Xueliang1, 2 ; Cui, Yuanlai1
Author affiliation: 1 State Key Laboratory of Water Resources and Hydropower,
2 International Water Management Institute,
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: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 124-130
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Crop planting structure extraction in irrigated areas includes a range of dynamic parameters which require proper spatial and temporal resolution remotely sensed data. The paper seeks to extract crop planting structure by employing multi-temporal images from multi-sensors. Landsat enhanced thematic mapper plus (ETM+) images and moderate resolution imaging spectroradiometer (MODIS) normalized difference vegetation index (NDVI) monthly data were res-merged to produce a mega data tube, which was then classified using ISO cluster algorithm. Spectral signature of each class was extracted and identified using spectral matching technique taking crop coefficient curve as reference. In the way Zhanghe Irrigation system in southern
Number of references: 28
Main heading: Image matching
Controlled terms: Atmospherics - Crops - Image processing - Irrigation - Radiometers - Remote sensing - Rotation - Satellite imagery - Spectrometers - Vegetation
Uncontrolled terms: Accuracy assessment - Classification accuracy - Cluster algorithms - Cost-efficient - Crop coefficient curves - Dynamic parameters - ETM+ - Ground truth data - High resolution image - Irrigation systems - Landsat enhanced Thematic Mapper Plus (ETM+) image - Moderate resolution imaging spectroradiometer - MODIS - Multi sensor - Multi-temporal image - Multi-temporal remote sensing - Normalized difference vegetation index - Planting structure - Remotely sensed data - Southern China - Spectral matching technique - Spectral matchings - Spectral signature - Statistical datas - Structure extraction - Temporal resolution
Classification code: 741 Light, Optics and Optical Devices - 741.3 Optical Devices and Systems - 801 Chemistry - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 821.4 Agricultural Products - 931.1 Mechanics - 941.3 Optical Instruments - 944.7 Radiation Measuring Instruments - 731.1 Control Systems - 443 Meteorology - 443.1 Atmospheric Properties - 461.9 Biology - 525.1 Energy Resources and Renewable Energy Issues - 601.1 Mechanical Devices - 655.2 Satellites - 656.2 Space Research - 701.1 Electricity: Basic Concepts and Phenomena - 723.2 Data Processing and Image Processing
DOI: 10.3969/j.issn.1002-6819.2009.08.023
Database: Compendex
17. Accession number: 20094512421241
Title: Effect of metal-modified catalyst on liquefaction of pine sawdust
Authors: Cheng, Mingyang1 ; Yuan, Xingzhong1 ; Zeng, Guangming1 ; Tong, Jingyi1 ; Wang, Lihua1 ; Li, Hui1 ; Ding, Yanmin1
Author affiliation: 1 College of Environmental Science and Engineering,
Corresponding author: Yuan, X. (yxz@hnu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 210-214
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Thermal chemical liquefaction of pin sawdust was carried out in a
Number of references: 15
Main heading: Catalysts
Controlled terms: Biomass - Catalysis - Chromatographic analysis - Gas chromatography - Liquefaction - Mass spectrometry - Metal recovery - Metals - Toluene - Zeolites
Uncontrolled terms: Added-value chemicals - Bio oil - Conversion rates - Gas chromatography-mass spectrometry - H-ZSM-5 - HZSM-5 zeolites - Liquefaction effect - Liquid products - Long chains - Metal catalyst - Pine sawdust - Production rates - Reaction temperature
Classification code: 821.5 Agricultural Wastes - 805.1.1 Biochemical Engineering - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 804 Chemical Products Generally - 943.3 Special Purpose Instruments - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 801 Chemistry - 531 Metallurgy and Metallography - 525.1 Energy Resources and Renewable Energy Issues - 802.3 Chemical Operations
DOI: 10.3969/j.issn.1002-6819.2009.08.038
Database: Compendex
18. Accession number: 20094512421222
Title: Design and experiment of control system of variable pesticide application machine hauled by tractor
Authors: Zhai, Changyuan1 ; Zhu, Ruixiang1 ; Sui, Shuntao1 ; Xue, Shaoping1 ; Shangguan, Zhouping2
Author affiliation: 1 College of Mechanical and Electronic Engineering, Northwest Agriculture and
2
Corresponding author: Zhu, R. (zrxjdxy2006@sohu.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 105-109
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Pesticide application control is the key technology to improve operation quality, reduce chemical pollution, and cut down costs of production. A control system of variable pesticide application machine hauled by tractor was designed based on AT
Number of references: 16
Main heading: Pesticides
Controlled terms: Agriculture - Computers - Control theory - Machine design - Machinery - Microcomputers - Pollution control - Tractors (agricultural) - Tractors (truck)
Uncontrolled terms: Agricultural productions - Application-control - AT
Classification code: 821.2 Agricultural Chemicals - 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 803 Chemical Agents and Basic Industrial Chemicals - 731.1 Control Systems - 723 Computer Software, Data Handling and Applications - 722.4 Digital Computers and Systems - 722 Computer Systems and Equipment - 663.1 Heavy Duty Motor Vehicles - 601 Mechanical Design - 454.2 Environmental Impact and Protection
DOI: 10.3969/j.issn.1002-6819.2009.08.019
Database: Compendex
19. Accession number: 20094512421232
Title: Soil erosion assessment of small watershed in Loess Plateau based on GIS and RUSLE
Authors: Qin, Wei1, 2 ; Zhu, Qingke2 ; Zhang, Yan2
Author affiliation: 1 Department of Sedimentation, China Institute of Water Resources and Hydropower Research,
2 Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education,
Corresponding author: Zhu, Q. (xiangmb@bjfu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 157-163
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The algorithm of slope length factor based on up-slop runoff area was mended and new algorithm of slope length factor considering the effect of land use/cover for up-slop runoff was produced. By using geographic information system (GIS) and the revised universal soil loss equation (RUSLE), the soil erosion intensity and its relationship with environmental factors in the Simianyaogou watershed, located at Loess Plateau were studied. The results showed that the average annual soil erosion intensity in the watershed was 4 399.79 t/(km2·a), which was in the category of moderate degree erosion. Both soil erosion intensity and amount increased significantly with the increasing of the slop gradient. 80.59% of the total soil loss occurred in the region with a gradient more than 25 degree, of which the area was 59.06% of the total watershed area. Soil erosion intensity varied with slope aspects in a trend of sunny slope>half-sunny slope>half-shady slope>shady slope. The area of sunny slope occupyed 45.07% of the total watershed area, but the erosion amount of which occupyed 56.50% of the total erosion amount. In different land use types, the grassland occupyed 57.07% of the total watershede area, but the erosion amount of which occupyed 96.37% of the total erosion amount. So, grassland had became the major erosion and sediment source in the watershed. The study provides technical basis for applying RUSLE to assess soil erosion on Loess Plateau and offers useful references for water and soil resource utilization in the region.
Number of references: 30
Main heading: Erosion
Controlled terms: Geographic information systems - Information systems - Land use - Landforms - Runoff - Sediment transport - Soils - Watersheds
Uncontrolled terms: Different land use types - Environmental factors - Land use/cover - Loess plateau - Revised universal soil loss equation (RUSLE) - Revised universal soil loss equations - Sediment sources - Slope aspect - Slope length - Small watersheds - Soil erosion - Soil loss - Soil resources - Watershed areas
Classification code: 903.3 Information Retrieval and Use - 903.2 Information Dissemination - 723.3 Database Systems - 631.3 Flow of Fluid-Like Materials - 539.1 Metals Corrosion - 483.1 Soils and Soil Mechanics - 483 Soil Mechanics and Foundations - 481.1 Geology - 444.1 Surface Water - 442.2 Land Reclamation - 442.1 Flood Control - 407 Maritime and Port Structures; Rivers and Other Waterways - 403 Urban and Regional Planning and Development
DOI: 10.3969/j.issn.1002-6819.2009.08.029
Database: Compendex
20. Accession number: 20094512421212
Title: Effects of ridge width and planting density on corn yields in rainwater-harvesting system with plastic film mulching on ridge
Authors: Wang, Xiaoling1 ; Chen, Mingcan1 ; Yi, Xianfeng1 ; Fu, Guozhan1
Author affiliation: 1
Corresponding author: Wang, X. (xlwang1975@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 40-47
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Field experiment was carried out to study effects of ridge width and planting density on corn yields and water use efficiency in a plastic film mulching on ridge for rainwater-harvesting system. The system was designed by two widths of ridges of
Number of references: 18
Main heading: Water content
Controlled terms: Biochemical oxygen demand - Biomass - Chlorophyll - Forestry - Harvesting - Plastic films - Porphyrins - Protective coatings - Soil moisture - Underwater soils - Water supply
Uncontrolled terms: Corn - Density - Mulching - Rainwater harvesting of ridge and furrow - Ridge width - Yield
Classification code: 804.1 Organic Compounds - 805.1.1 Biochemical Engineering - 813.2 Coating Materials - 801.2 Biochemistry - 817.1 Polymer Products - 821.3 Agricultural Methods - 821.5 Agricultural Wastes - 821.0 Woodlands and Forestry - 539.2.2 Protecting Materials - 446.1 Water Supply Systems - 452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and Disposal - 444 Water Resources - 453 Water Pollution - 483.1 Soils and Soil Mechanics - 525.1 Energy Resources and Renewable Energy Issues - 471.1 Oceanography, General
DOI: 10.3969/j.issn.1002-6819.2009.08.008
Database: Compendex
21. Accession number: 20094512421210
Title: Analysis of spatio-temporal characteristic on seasonal drought of spring maize based on crop water deficit index
Authors: Huang, Wanhua1, 2 ; Yang, Xiaoguang1 ; Qu, Huihui1 ; Feng, Liping1 ; Huang, Binxiang1 ; Wang, Jing1 ; Shi, Shengjin1 ; Wu, Yongfeng3 ; Zhang, Xiaoyu1 ; Xiao, Xiaoping4 ; Yang, Guangli4 ; Li, Maosong3
Author affiliation: 1 College of Resources and Environmental Science,
2
3
4 Soil and Fertilizer Research Institute,
Corresponding author: Yang, X. (yangxg@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 28-34
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Seasonal drought is the most prominent meteorological disaster which affects spring maize production in
Number of references: 21
Main heading: Water resources
Controlled terms: Crops - Drought - Profilometry - Size distribution - Water analysis - Water supply
Uncontrolled terms: Calculating methods - Crop evapotranspiration - Crop water requirement - Crop water requirements - Growth stages - High frequency - Higher frequencies - Hunan province - Low frequency regions - Maize production - Penman-Monteith formula - Spatial distribution - Spatio-temporal characteristic - Spatiotemporal characteristics - Spring maize - Technical support - Temporal and spatial distribution - Water deficit index - Weather data
Classification code: 933.1 Crystalline Solids - 931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 821.4 Agricultural Products - 801 Chemistry - 943.3 Special Purpose Instruments - 531.2 Metallography - 445.2 Water Analysis - 444 Water Resources - 443.3 Precipitation - 423 Non Mechanical Properties and Tests of Building Materials - 446.1 Water Supply Systems
DOI: 10.3969/j.issn.1002-6819.2009.08.006
Database: Compendex
22. Accession number: 20094512421236
Title: Optimization of earth wall thickness and thermal insulation property of solar greenhouse in
Authors: Yang, Jianjun1 ; Zou, Zhirong1 ; Zhang, Zhi1 ; Wang, Yunbing1 ; Zhang, Zhixin1 ; Yan, Fei1
Author affiliation: 1 College of Horticulture, Northwest Agriculture and
Corresponding author: Zou, Z. (zouzhirong2005@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 180-185
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: More than 95% Solar Greenhouse walls were built with earth in
Number of references: 17
Main heading: Greenhouses
Controlled terms: Optimization - Solar heating - Thermal insulation - Walls (structural partitions)
Uncontrolled terms: Earth wall - Heat release -
Classification code: 921.5 Optimization Techniques - 821.6 Farm Buildings and Other Structures - 657.1 Solar Energy and Phenomena - 643.1 Space Heating - 642.1 Process Heating - 413.2 Heat Insulating Materials - 408.2 Structural Members and Shapes - 402.1 Industrial and Agricultural Buildings - 402 Buildings and Towers
DOI: 10.3969/j.issn.1002-6819.2009.08.033
Database: Compendex
23. Accession number: 20094512421219
Title: Experiment on the best structure parameters of root-cutting shovel for winter wheat
Authors: Lü, Zhaoqin1 ; Li, Ruxin1 ; Yin, Kerong1 ; Zhao, Ran1
Author affiliation: 1
Corresponding author: Lü, Z. (lzqsdau2003@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 83-87
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Mechanical root-cutting technology is an important high-yield cultivation measure of winter wheat sowing. Root-cutting shovel is the key working components of mechanical root-cutting of wheat, and whether the design of the working parameters is reasonable, determines the mechanical root-cutting effect of wheat and the operating quality of root-cutting. Through the test parameters and analysis of root-cutting shovel, root-cutting mechanisms were proposed,root-cutting effect and the operating quality with different structure parameters were trially studied, and the best parameters to meet the demand for wheat root cutting were attained. The results showed: with the increase of the wing-open angle 2γ of root-cutting shovel, the role of sliding-cutting was reduced, and winding and blocked weed was increased; the smaller the soil-cutting angle β0 was, the better root-cutting capacity would be; soil-smashing angle β had an assistant effect for wheat root-cutting; the bigger soil-entering angle and root-cutting shovel's breadth B were, the more quantity of roots would be cut,while the more serious digging-up the soil, wheat seedings injured and irregular earth surface were. The reasonable working parameters of root-cutting shovel were: γ=45°, β=12°, β0=18°, α=8.5°, B=
Number of references: 17
Main heading: Mechanisms
Controlled terms: Machine design - Shovels - Soils
Uncontrolled terms: Cutting angles - Cutting capacity - Cutting effect - Cutting machines - Cutting mechanisms - Cutting technology - Different structure - Earth surface - Mechanical root-cutting - Structure - Structure parameter - Test parameters - Wheat - Wheat roots - Winter wheat - Working parameters
Classification code: 405.1 Construction Equipment - 483.1 Soils and Soil Mechanics - 601 Mechanical Design - 601.3 Mechanisms - 605.2 Small Tools, Unpowered
DOI: 10.3969/j.issn.1002-6819.2009.08.015
Database: Compendex
24. Accession number: 20094512421256
Title: Preservation effect of eggs by coating with plant antibacterial oil emulsion
Authors: Xie, Jing1 ; Ma, Meihu2 ; Gao, Jin1
Author affiliation: 1 College of Food Science and Technology,
2
Corresponding author: Ma, M. (mameihuhn@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 299-304
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to prolong the storage period of eggs, the coating preservation experiments were carried out using antibacterial emulsions compounded from four extracted oils, such as origanum vulgare oil, garlic oil, ginger oil and clove oil respectively. The results showed that, after storage of five weeks, through analyzing sensory characteristics and internal quality index of eggs, the preservation effects of all treated groups with compound plant antibacterial oil were better than the control group, especially the origanum vulgare oil group and the clove oil group were the best. With the compound plant antibacterial oil of origanum and clove, all of the eggs were still fresh with weight loss rate of 2.824% and 2.656%, yolk index of 0.1965 and 0.2129, and the Haugh unit of 40.311 and 41.312, respectively after 5-week storage at
Number of references: 15
Main heading: Group technology
Controlled terms: Agricultural products - Atmospheric humidity - Coatings - Emulsification - Emulsions - Food preservation
Uncontrolled terms: Antistaling agents - Chiken eggs - Clove oil - Control groups - Garlic oil - Internal quality - Oil emulsions - Origanum vulgare - Preservation with film - Relative humidities - Sensory characteristics - Storage - Storage periods - Weight loss rates
Classification code: 913.1 Production Engineering - 822.2 Food Processing Operations - 821.4 Agricultural Products - 813.2 Coating Materials - 913.2 Production Control - 804 Chemical Products Generally - 801.3 Colloid Chemistry - 539 Metals Corrosion and Protection; Metal Plating - 443.1 Atmospheric Properties - 802.3 Chemical Operations
DOI: 10.3969/j.issn.1002-6819.2009.08.053
Database: Compendex
25. Accession number: 20094512421211
Title: Ammonia volatilization and its influence factors of paddy field under water-saving irrigation
Authors: Peng, Shizhang1, 2 ; Yang, Shihong1, 2 ; Xu, Junzeng1
Author affiliation: 1 State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,
2 Institute of Water-Saving Irrigation,
Corresponding author: Peng, S. (szpeng@hhu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 35-39
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to study the characteristics of ammonia volatilization from paddy field under water-saving irrigation, ammonia volatilization under different irrigation techniques were measured through field experiment. Variations of ammonia volatilization rate and volatilization amount of paddy field during rice growing season were analyzed, as well as the relationships between ammonia volatilization rate and its influence factors. The results showed that the ammonia volatilization rate during rice growing season under controlled irrigation varied with the same pattern as that under flooding irrigation, and was lower than that under flooding irrigation in the most time after reaching the peak value of ammonia volatilization induced by tiller fertilizer. Volatilization amount during rice growing season was
Number of references: 17
Main heading: Irrigation
Controlled terms: Ammonia - Ammonium compounds - Soil moisture - Underwater soils - Water conservation
Uncontrolled terms: Air humidity - Air temperature - Ammonia volatilization - Field experiment - Growing season - Influence factors - Paddy field - Paddy fields - Peak values - Surface soil - Under water - Volatilization - Wind speed
Classification code: 821.3 Agricultural Methods - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 444 Water Resources - 403.1 Urban Planning and Development
DOI: 10.3969/j.issn.1002-6819.2009.08.007
Database: Compendex
26. Accession number: 20094512421247
Title: Effect of land consolidation history on soil quality of purple hilly region
Authors: Xu, Chang1 ; Gao, Ming1 ; Xie, Deti1 ; Jiang, Tao1 ; Li, Sha2 ; Wei, Chaofu1
Author affiliation: 1 College of Resources and Environment Sciences,
2 Agriculture Technology and
Corresponding author: Gao, M. (gaoming@swu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 242-248
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to study the cumulative effect of land consolidation on soil quality of purple hilly region, field sampling and laboratory analysis were combined to explore the variation rule of soil quality on different slope positions with different land consolidation history (1, 3 and
Number of references: 25
Main heading: Soils
Controlled terms: Chemical properties - Enzyme activity - Enzymes - Land use - Organic compounds
Uncontrolled terms: Acid phosphatase - Available P and K - Biological properties - Cation exchange capacities - Comprehensive qualities - Cumulative effects - Different slopes - Evaluation factor - Field sampling - Laboratory analysis - Physical-chemical properties - Purple hilly area - Slope positions - Soil organic matters - Soil quality
Classification code: 804.1 Organic Compounds - 801.2 Biochemistry - 801 Chemistry - 483.1 Soils and Soil Mechanics - 461.9 Biology - 461.2 Biological Materials and Tissue Engineering - 442.2 Land Reclamation - 423 Non Mechanical Properties and Tests of Building Materials - 403 Urban and Regional Planning and Development
DOI: 10.3969/j.issn.1002-6819.2009.08.044
Database: Compendex
27. Accession number: 20094512421237
Title: Effect of organic, low-input and conventional production model on soil quality in solar greenhouse vegetable growing system
Authors: Liang, Lina1 ; Li, Ji1 ; Yang, Hefa2 ; Xie, Yongli1 ; Xu, Zhi1 ; Zhang, Longli1
Author affiliation: 1 College of Resources and Environmental Science,
2 Quzhou Experimental
Corresponding author: Li, J. (liji@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 186-191
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: There has been increased scientific interest in the organic framing system which is one alternative to conventional agriculture. A long-term greenhouse soil of organic, low-input and conventional farming systems was studied, contrast analyses of the effects of organic farming system on soil nutrients, soil microbial biomass carbon and nitrogen and soil enzyme activities were made. The results showed after six-year experiments, the application of organic farming system could significantly increase soil total carbon and nitrogen content, and soil microbial biomass carbon and nitrogen content. The soil enzyme activities were improved. The performance indicators were organic system > low-input system > conventional system. The application of organic farming system could significantly improve soil quality and be conductive to the sustainable use of soil. The order of the yields of summer tomatoes was organic system > low-input system > conventional system. The autumn crop yields of organic system increased with planting years.
Number of references: 28
Main heading: Geologic models
Controlled terms: Agriculture - Benchmarking - Biomass - Enzymes - Greenhouse effect - Greenhouses - Nitrogen - Soils
Uncontrolled terms: Conventional systems - Crop yield - Farming system - Framing system - Greenhouse soil - Input systems - Low-input farming system - Organic farming system - Organic systems - Performance indicators - Production models - Quality - Soil enzyme activity - Soil microbial biomass - Soil nutrients - Soil quality - Solar greenhouse - Sustainable use - Total carbon
Classification code: 804 Chemical Products Generally - 804.1 Organic Compounds - 805.1.1 Biochemical Engineering - 913 Production Planning and Control; Manufacturing - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.6 Farm Buildings and Other Structures - 912 Industrial Engineering and Management - 821.5 Agricultural Wastes - 801.2 Biochemistry - 525.1 Energy Resources and Renewable Energy Issues - 402.1 Industrial and Agricultural Buildings - 443.1 Atmospheric Properties - 451 Air Pollution - 461.2 Biological Materials and Tissue Engineering - 481.1 Geology - 483.1 Soils and Soil Mechanics
DOI: 10.3969/j.issn.1002-6819.2009.08.034
Database: Compendex
28. Accession number: 20094512421215
Title: Design and implementation of automatic control system for sectional type subsurface drip irrigation in greenhouse
Authors: Ren, Wentao1 ; Yang, Yi1 ; Zhang, Benhua1 ; Cui, Hongguang1 ; Huang, Yi2 ; Zhang, Yulong2
Author affiliation: 1 College of Engineering,
2
Corresponding author: Ren, W. (renwentao1958@yahoo.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 59-63
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to fully draw out the potential of water saving and benefit increasing of the subsurface drip irrigation technology in greenhouse production, the authors developed an irrigation control system with the method of fuzzy controlling. In the design process of the system, the authors considered the climate characteristic of cold and drought in the northeast of
Number of references: 17
Main heading: Controllers
Controlled terms: Analog to digital conversion - Automation - Control - Drought - Fuzzy control - Greenhouses - Groundwater - Humidity control - Moisture determination - Permittivity - Predictive control systems - Programmable logic controllers - Programmed control systems - Soil moisture - Subirrigation - Water conservation - Water tanks
Uncontrolled terms: A/D converter - Automatic control systems - Climate characteristics - Control errors - Design process - Ductworks - External memory - Greenhouse production - Input signal - Output signal - Soil humidity - Subsurface drip irrigation - Technical requirement - Two-dimension - Water saving
Classification code: 722.4 Digital Computers and Systems - 722.5 Analog and Hybrid Computers - 723.1 Computer Programming - 723.4 Artificial Intelligence - 731 Automatic Control Principles and Applications - 944.2 Moisture Measurements - 731.1 Control Systems - 732.1 Control Equipment - 821.3 Agricultural Methods - 821.6 Farm Buildings and Other Structures - 921 Mathematics - 732 Control Devices - 708.1 Dielectric Materials - 701 Electricity and Magnetism - 402 Buildings and Towers - 402.1 Industrial and Agricultural Buildings - 403.1 Urban Planning and Development - 443.3 Precipitation - 444 Water Resources - 444.2 Groundwater - 446.1 Water Supply Systems - 483.1 Soils and Soil Mechanics - 619.2 Tanks - 643.3 Air Conditioning
DOI: 10.3969/j.issn.1002-6819.2009.08.011
Database: Compendex
29. Accession number: 20094512421245
Title: Effects of crop stubble combined with biological fences on reducing soil wind erosion
Authors: Zhao, Peiyi1, 2 ; Li, Huanchun2 ; Tuo, Debao2 ; Pan, Xuebiao3 ; Yan, Wei1 ; Duan, Yu2
Author affiliation: 1 College of Forestry,
2 Key Observation Station of Ecologic Environment of Ministry of Agriculture, Institute of Plant Nutrition and Analysis, Inner-Mongolia Academy of Agricultural Sciences, Hohhot 010031, China
3
Corresponding author: Zhao, P. (zhpy@263.net)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 231-235
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to explore protective effects of crop stubble combined with biological fence on bare intercropping autumn-ploughed farmland in spring and winter in ecotone between agriculture and animal husbandry, the methods of wind erosion ring and field movable wind tunnel instrument were adapted to monitor soil wind erosion with PC-3 automatic weather station used for measurement of wind speed in study region. The results showed that wind velocity near land surface was decreased and land surface roughness was increased by sunflower stalk as biological fence. It was found that the effect of reducing wind erosion of the millet stubble was better than that of biological fence, the reducing rate of wind erosion showed a shape of letter "V", and the amount of wind erosion reached the maximum when the distance from biological fence or millet stubble was about
Number of references: 20
Main heading: Erosion
Controlled terms: Aerodynamics - Crops - Fences - Soils - Surface measurement - Surface roughness - Tunnels - Weather information services - Wind effects - Wind tunnels
Uncontrolled terms: Animal husbandry - Automatic weather stations - Biological fence - Land surface - Movable wind tunnel - Protective effects - Soil wind erosion - Sunflower stalks - Wind erosion - Wind erosion ring - Wind erosions - Wind speed - Wind velocities
Classification code: 539.1 Metals Corrosion - 651.1 Aerodynamics, General - 651.2 Wind Tunnels - 716.3 Radio Systems and Equipment - 716.4 Television Systems and Equipment - 718.1 Telephone Systems and Equipment - 821.4 Agricultural Products - 931.2 Physical Properties of Gases, Liquids and Solids - 943.2 Mechanical Variables Measurements - 483.1 Soils and Soil Mechanics - 401.2 Tunnels and Tunneling - 402 Buildings and Towers - 407 Maritime and Port Structures; Rivers and Other Waterways - 408.1 Structural Design, General - 408.2 Structural Members and Shapes - 422.1 Test Equipment - 443 Meteorology - 443.1 Atmospheric Properties - 483 Soil Mechanics and Foundations
DOI: 10.3969/j.issn.1002-6819.2009.08.042
Database: Compendex
30. Accession number: 20094512421230
Title: Remote sensing measurement of corn planting area based on field-data
Authors: Ma, Li1, 2 ; Gu, Xiaohe1 ; Xu, Xingang1 ; Huang, Wenjiang1 ; Jia, Jianhua2
Author affiliation: 1 National Engineering Research Center for Information Technology in Agriculture,
2 Department of Survey Engineering,
Corresponding author: Gu, X. (guxh@nercita.org.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 147-151
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Stating the cultivation area of cereal crops in administrative unit and the spatial distribution information of cereal crops are not only the basis to estimate the food production, but also the important basis to constitute the food policy and adjust the planting structures. The spatial information technology represented by RS, GIS and GPS is the key technical support to state the cultivation area of cereal crops, and it is also the important part to achieve from conventional statistics to spatial statistics step by step. In order to obtain the planting area of corn by remote sensing measurement, this study chose Yuanyang
Number of references: 21
Main heading: Remote sensing
Controlled terms: Crops - Cultivation - Decision trees - Global positioning system - Steel sheet - Vegetation
Uncontrolled terms: Area-based - Cereal crop - Classification - Classification results - Corn planting - Digital numbers - Field boundaries - Food policies - Food production - Henan Province - High resolution image - Multi-temporal - NDVI - Normalized difference vegetation index - Spatial distribution - Spatial informations - Spatial statistics - Step-by-step - Technical support - The area of corn - Thematic mapper images - TM - TM image - Vector fields
Classification code: 821.3 Agricultural Methods - 821.4 Agricultural Products - 912.1 Industrial Engineering - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 922 Statistical Methods - 943.3 Special Purpose Instruments - 961 Systems Science - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 461.9 Biology - 525.1 Energy Resources and Renewable Energy Issues - 535.1 Metal Rolling - 545.3 Steel - 655.2.1 Communication Satellites - 716.3 Radio Systems and Equipment - 731.1 Control Systems
DOI: 10.3969/j.issn.1002-6819.2009.08.027
Database: Compendex
31. Accession number: 20094512421233
Title: Design of network information system of 3D insect specimen
Authors: Liu, Guiyang1 ; Qi, Ying2 ; Lin, Zhiwei3 ; Ding, Guochao1
Author affiliation: 1 College of Information Technology,
2 Academic Affairs Office,
3 College of Agriculture,
Corresponding author: Liu, G. (guiyangliu@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 164-168
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to inspect insect specimen in multi-angle on the internet, the authors introduced a method of 3-D insect specimen demonstration. Using self-developed shooting device and image processing technology, automatic modeling and virtual demonstrate method of 3D insect specimen image model were implemented. Based on those, the 3-D insect specimen network information system was built. In the system, the insect specimen could be modeled automatically, showed panoramically and reserved timelessly, which provided the data support for insect learning and researching.
Number of references: 7
Main heading: Three dimensional
Controlled terms: Image processing - Information systems - Insect control - Visualization - World Wide Web
Uncontrolled terms: Automatic modeling - Data support - Image processing technology - Multi-angle - Network information systems - Specimen images
Classification code: 903.3 Information Retrieval and Use - 741 Light, Optics and Optical Devices - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 821.2 Agricultural Chemicals - 902.1 Engineering Graphics - 903.2 Information Dissemination - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 461.7 Health Care - 723.2 Data Processing and Image Processing
DOI: 10.3969/j.issn.1002-6819.2009.08.030
Database: Compendex
32. Accession number: 20094512421214
Title: Evapotranspiration and water use efficiency of potted pakchoi under different surface coverage degrees
Authors: Li, Xia1, 2 ; Wang, Guodong1 ; Xue, Xuzhang2 ; Xie, Yingge1 ; Chen, Fei2 ; Li, Shao2
Author affiliation: 1 College of Science, Northwestern Agricultural and
2
Corresponding author: Xue, X. (xuexz@nercita.org.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 54-58
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Through pot experiment, dynamic changes of temperature and humity in micro-environment at growth period of pakechoi, and water consumption rules of crop transpiration and planting substrate evaporation were studied under different coverage degrees. The results showed that the air temperature and humidity increased with the coverage degrees increasing at growth point. During day and night, evapotranspiration decreased with increasing of coverage degrees. The variation of daytime evapotranspiration was significant, the order of evapotranspiration was the no-coverage treatment >1/2 coverage treatment >15/16 circle coverage. The total water consumptions tended to decrease with coverage degrees increasing during pakchoi growth period. Water consumption of 1/2 circle coverage, 3/4 circle coverage, and 15/16 circle coverage were 91.34%, 69.03% and 40.74% of the none coverage treatment, respectively. To none coverage, 1/2 circle coverage, 3/4 circle, and 15/16 circle, and their corresponding average dry weights of the aerial parts were 5.551, 6.536, 5.143,
Number of references: 17
Main heading: Water absorption
Controlled terms: Biochemical oxygen demand - Crops - Evapotranspiration - Forestry - Transpiration - Water recycling - Water supply
Uncontrolled terms: Average light intensity - Coverage degree - Eapotranspiration - Pakchoi - Water use efficiency (WUE)
Classification code: 821.4 Agricultural Products - 453.2 Water Pollution Control - 461.9 Biology - 641.2 Heat Transfer - 643 Space Heating, Ventilation and Air Conditioning - 802.3 Chemical Operations - 821.0 Woodlands and Forestry - 453 Water Pollution - 452.2 Sewage Treatment - 446.1 Water Supply Systems - 445.1 Water Treatment Techniques - 444.1 Surface Water - 444 Water Resources - 452.4 Industrial Wastes Treatment and Disposal
DOI: 10.3969/j.issn.1002-6819.2009.08.010
Database: Compendex
33. Accession number: 20094512421234
Title: Analysis of influence factors about space sampling efficiency of winter wheat planting area
Authors: Zhang, Jinshui1 ; Pan, Yaozhong1 ; Hu, Tan'gao1 ; Chen, Lianqun1 ; Dong, Yansheng1
Author affiliation: 1 State Key Laboratory of Earth Surface Processes and Resource Ecology,
Corresponding author: Zhang, J. (zhangjsh@ires.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 169-173
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Based on the sample space of farming area measurement method combining the advantages of remote sensing and sampling theory, spatial sample method has been widely applied for crop planting area. In the paper, a stratfied sampling method based on grid was introduced for such purposes. Firstly, with the 0-1 image, the effects of the factors of grid size, strata layer number on sampling accuracy, sampling variance and sampling ratio were analyzed. Secondly, binary image classification defining as result for crop area, random mix error was adopted for different kinds of abundance (10%, 20% &mellip;&mellip;, 100%) of winter wheat. The effects of the factors of grid size, strata layer number and classification error on sampling accuracy, sample ratio were analyzed. Finally, the layer number defined as six was brought up, and under classification error lower 40% was good for crop area estimation with spatial sample method. In a word, the research has developed a good method for optimizing spatial sampling.
Number of references: 22
Main heading: Crops
Controlled terms: Binary images - Errors - Image analysis - Image classification - Remote sensing
Uncontrolled terms: Area estimation - Area measurement - Classification errors - Grid size - Influence factors - Layer number - Sample space - Sampling method - Sampling ratios - Sampling theory - Space sampling - Spatial sampling - Winter wheat
Classification code: 922.2 Mathematical Statistics - 921 Mathematics - 821.4 Agricultural Products - 741 Light, Optics and Optical Devices - 731.1 Control Systems - 731 Automatic Control Principles and Applications - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 716 Telecommunication; Radar, Radio and Television
DOI: 10.3969/j.issn.1002-6819.2009.08.031
Database: Compendex
34. Accession number: 20094512421228
Title: ARIS-based requirement analysis of agricultural information collection system
Authors: Xu, Gang1 ; Chen, Tianen1 ; Chen, Liping1 ; Wang, Yanji1 ; Gao, Yunbing1
Author affiliation: 1 National Engineering Research Center for Information Technology in Agriculture,
Corresponding author: Chen, T. (chente@nercita.org.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 136-140
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Requirement analysis is important for information system engineering, and the requirement definition and analysis of agricultural information system engineering were increasingly being focused with the development of the agricultural informationization. This paper used the ARIS-based requirement analysis and modeling method in the design of the agricultural information collection platform to solve the inaccurate description problem of the requirement in the agricultural software system. The application of the five views of ARIS in the agricultural information system was studied by using the EPC (Event-Driven Process Chains) method to model the requirement in the agricultural information collection platform. Finally, the practical implementation of the software shows the advantages of ARIS modeling method for the agricultural research and development.
Number of references: 15
Main heading: Models
Controlled terms: Computer software - Information systems - Systems engineering
Uncontrolled terms: Agricultural information collection - Agricultural information engineering - Agricultural information systems - Agricultural research - ARIS - Event driven process chain - Information collections - Informationization - Modeling method - Practical implementation - Requirement analysis - Software systems
Classification code: 723 Computer Software, Data Handling and Applications - 902.1 Engineering Graphics - 903.2 Information Dissemination - 903.3 Information Retrieval and Use - 912 Industrial Engineering and Management - 961 Systems Science
DOI: 10.3969/j.issn.1002-6819.2009.08.025
Database: Compendex
35. Accession number: 20094512421243
Title: Pyrolysis characteristics and dynamics of different components of cotton stalk
Authors: Zhou, Ling1, 2 ; Zhou, Fujun2, 3 ; Jiang, Enchen2 ; Wang, Mingfeng2
Author affiliation: 1 School of Mechanical and Electrical Engineering,
2
3
Corresponding author: Jiang, E. (ecjiang@scau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 220-225
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The pyrolysis characteristics of stalk, bark, xylem, and pith of cotton were studied by means of STA
Number of references: 16
Main heading: Thermogravimetric analysis
Controlled terms: Activation energy - Biomass - Cotton - Heating - Pyrolysis - Solvent extraction
Uncontrolled terms: Ash contents - Biomass pyrolysis - Cotton stalk - Device design - Gravimetric apparatus - Growth mechanisms - Kinetic mechanism - Process parameters - Pyrolysis process - Random nucleation - Reaction orders - Volatile components - Waste recycling - Weight loss
Classification code: 821.5 Agricultural Wastes - 821.4 Agricultural Products - 819.1 Natural Fibers - 805.1.1 Biochemical Engineering - 802.3 Chemical Operations - 931.3 Atomic and Molecular Physics - 802.2 Chemical Reactions - 801 Chemistry - 643.1 Space Heating - 642.1 Process Heating - 525.1 Energy Resources and Renewable Energy Issues - 801.4 Physical Chemistry
DOI: 10.3969/j.issn.1002-6819.2009.08.040
Database: Compendex
36. Accession number: 20094512421205
Title: Scale effect research framework of irrigation water use efficiency indices in well-canal combined irrigation area
Authors: Chen, Haorui1 ; Huang, Jiesheng1 ; Wu, Jingwei1 ; Yang, Jinzhong1
Author affiliation: 1 State Key Laboratory of Water Resources and Hydropower Engineering Science,
Corresponding author: Chen, H. (chr_1984@yahoo.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 1-7
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The current research of scale effect of irrigation water use efficiency was mainly focused at irrigation schemes with surface water resources, and less involved with groundwater irrigation. Based on the water accounting method developed by International Water Management Institute (IWMI), a general framework for analyzing variability of irrigation water use efficiency indices across scales in well-canal combined irrigation were proposed with return water utilization index, taking Shijin irrigation scheme in
Number of references: 16
Main heading: Irrigation canals
Controlled terms: Biochemical oxygen demand - Forestry - Groundwater - Groundwater resources - Hydraulic structures - Hydrogeology - Irrigation - Research - Surface water resources - Water conservation - Water management - Water supply
Uncontrolled terms: Accounting methods - Assessment index - Data collection - Field scale - Groundwater irrigation - Hebei Province - International waters - Irrigation area - Irrigation schemes - Irrigation water use efficiency - North China - Return water - Scale effects - Water use efficiency
Classification code: 452.4 Industrial Wastes Treatment and Disposal - 453 Water Pollution - 481.1 Geology - 452.2 Sewage Treatment - 611 Hydroelectric and Tidal Power Plants - 821.3 Agricultural Methods - 901.3 Engineering Research - 821.0 Woodlands and Forestry - 446.2 Related Hydraulic Structures - 407.2 Waterways - 441 Dams and Reservoirs; Hydro Development - 444 Water Resources - 403.1 Urban Planning and Development - 444.1 Surface Water - 446 Waterworks - 446.1 Water Supply Systems - 444.2 Groundwater
DOI: 10.3969/j.issn.1002-6819.2009.08.001
Database: Compendex
37. Accession number: 20094512421252
Title: Effects of different fixation methods on the quality of green tea
Authors: Zhu, Dewen1, 2 ; Yue, Pengxiang1 ; Yuan, Dishun3
Author affiliation: 1 Science and Technology College of Tea and Food,
2 Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture,
3
Corresponding author: Zhu, D. (zdwww7009@sina.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 275-279
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Fixation work is critical process to improve the green tea processing quality. The authors used the microwave fixation technology, hot-air fixation technology, steam fixation technology, the pan firing fixation technology and the combination fixation technology by the steam-hot air in the green tea processing. The sensory quality and characteristics of chemical components of processed green tea were analyzed. The experimental results showed that the tea contour luster, Tang Se, the phyllotaxis exhibited preferably while the fragrance and the tea taste exhibited unsatisfactory. The caffeine, the tea polyphenols, Vitamin C and the chlorophyll preserving content were the highest in tea, and they were 2.70%, 34.40%, 33.35×10-2 mg/g and 2.24 mg/g respectively in conditions of microwave output 10 kW, the fixation time 2.5 min, the temperature of fixation leaf
Number of references: 18
Main heading: Quality control
Controlled terms: Amines - Amino acids - Chlorophyll - Firing (of materials) - Heating - Microwaves - Organic acids - Phenols - Porphyrins - Quality assurance - Quality function deployment - Sensory perception - Steam - Technology - Total quality management
Uncontrolled terms: Chemical component - Different fixation methods - Energy consumption - Green tea - Hot air - Leaf temperature - Microwave fixation - Processing quality - Sensory qualities - Tea polyphenols - Traditional heating - Vitamin C
Classification code: 922.2 Mathematical Statistics - 711 Electromagnetic Waves - 801.2 Biochemistry - 804.1 Organic Compounds - 812.1 Ceramics - 812.2 Refractories - 901 Engineering Profession - 912.2 Management - 913.3 Quality Assurance and Control - 643.1 Space Heating - 414.1 Brickmaking - 461 Bioengineering and Biology - 461.4 Ergonomics and Human Factors Engineering - 642.1 Process Heating - 614 Steam Power Plants - 617.3 Steam Engines - 641.1 Thermodynamics - 617.2 Steam Turbines
DOI: 10.3969/j.issn.1002-6819.2009.08.049
Database: Compendex
38. Accession number: 20094512421227
Title: Method for rapid discrimination of varieties of rice using visible NIR spectroscopy
Authors: Zhou, Zili1, 3 ; Zhang, Yu2 ; He, Yong3 ; Li, Xiaoli3 ; Shao, Yongni3
Author affiliation: 1
2 Zhejiang Technology Institute of Economy,
3
Corresponding author: He, Y. (yhe@zju.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 131-135
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Based on the visible-near infrared spectroscopy (Vis-NIRS) technology, a new method to discriminate varieties of rice was proposed. First, the clustering of varieties of rice was analyzed by principal component analysis (PCA). Second, characteristics information of spectra were extracted by wavelet transform (WT), which as input sets for artificial neural network (ANN) to discriminate rice varieties of rice. And then a total of 180 (
Number of references: 16
Main heading: Principal component analysis
Controlled terms: Backpropagation - Infrared devices - Infrared spectroscopy - Infrared transmission - Near infrared spectroscopy - Neural networks - Spectroscopic analysis - Wavelet transforms
Uncontrolled terms: Artificial neural network - Identification rates - Input set - NIR spectroscopy - Rice - Training sets - Vis-NIRS - Visible-near infrared spectroscopy
Classification code: 931.3 Atomic and Molecular Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 922.2 Mathematical Statistics - 921.3 Mathematical Transformations - 941.4 Optical Variables Measurements - 801 Chemistry - 741.1 Light/Optics - 723.4 Artificial Intelligence - 461.1 Biomedical Engineering - 741.3 Optical Devices and Systems
DOI: 10.3969/j.issn.1002-6819.2009.08.024
Database: Compendex
39. Accession number: 20094512421246
Title: Effect of land use change on ecosystem services value of the upper reaches of the
Authors: Wu, Xing1 ; Shen, Zhenyao1 ; Liu, Ruimin1 ; Gong, Yongwei1
Author affiliation: 1 State Key Laboratory of Environ Simulation and Pollution Control,
Corresponding author: Shen, Z. (zyshen@bnu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 236-241
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Based on dynamic data of land use in 1980, 1990 and 2000, and by the table of Chinese ecosystem service value per unit area of different ecosystem types and ecological sensitivity analysis, a typical ecological fragile zones of the upper reach of Yangtze River was selected to explore land use changes and their effects on the ecosystem services value. Results showed that area of forest, grassland and wetland had the varying degree growth, and ecosystem service values showed an upward trend in the study region from 1980 to 1990. However, due to a dramatic increase in the area of construction land, farmland and unused land from 1990 to 2000, which were mainly transferred from forest and grass land, all kinds of ecosystem functions declined in different extents during the whole study period. The total ecosystem service values of the study region reduced from 11 119.16×108 Yuan in 1980 to 11077.85×108 Yuan in 2000, with the net decline of 41.31×108 Yuan. The rapid urbanization and development mode aimed at economic interests have brought significant harm to the local ecosystem service functions and sustainable development.
Number of references: 20
Main heading: Ecosystems
Controlled terms: Environmental engineering - Land use - Rivers - Sensitivity analysis - Strategic planning
Uncontrolled terms: Construction land - Ecological sensitivity - Ecological values - Economic interests - Ecosystem functions - Ecosystem services - Ecosystem services value - Land-use change - ON dynamics - Per unit - Significant harm - Upper reaches of Yangtze River - Upward trend - Yangtze River
Classification code: 921 Mathematics - 912.2 Management - 731.1 Control Systems - 454.3 Ecology and Ecosystems - 454 Environmental Engineering - 444.1 Surface Water - 442.2 Land Reclamation - 407.2 Waterways - 403 Urban and Regional Planning and Development
DOI: 10.3969/j.issn.1002-6819.2009.08.043
Database: Compendex
40. Accession number: 20094512421223
Title: Threshing principle of flexible pole-teeth roller for paddy rice
Authors: Xie, Fangping1 ; Luo, Xiwen2 ; Lu, Xiangyang3 ; Sun, Songlin3 ; Ren, Shuguang1 ; Tang, Chuzhou1
Author affiliation: 1
2
3
Corresponding author: Luo, X. (xwluo@scau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 110-113
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Because of the much bigger beaten force, the paddy seeds were often broken or even interiorly damaged, and its germination rate or integral rice rate was reduced by the method of traditional rigidity thresher. In order to reduce the damages of the paddy seeds, a flexible threshing roller in parallelism of principle with rigidity pole-teeth roller was designed. Based on the study and analysis of the beating threshing processing and its principle of reducing beating forces, according to the threshing dynamics analysis, it could increase the contacting time and reduce impacting force when the flexible threshing teeth was used at a stable-roller speed; the beating force of the flexible teeth was less than that of the rigidty pole-teeth. Contrastive studies on threshing by using rigidity pole-teeth and flexible pole-teeth were made. The conclusion indicated that it could be used for threshing paddy rice when its diameter was less than that of the rigidty pole-teeth, and the indexes of threshing such as the unthreshed rate, purity, threshed rate and fringle-broken rate were similar with those of the rigidity pole teeth, and broken rate of grain threshing was prominent less than that of the rigidity pole-teeth.
Number of references: 14
Main heading: Dentistry
Controlled terms: Agricultural machinery - Agriculture - Cylinders (shapes) - Poles - Rigidity - Rollers (machine components)
Uncontrolled terms: Dynamics analysis - Flexible threshing - Germination rates - Paddy rice - Roller speed
Classification code: 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 601.2 Machine Components - 951 Materials Science - 462.3 Dental Equipment and Supplies - 461.1 Biomedical Engineering - 408.2 Structural Members and Shapes - 461.6 Medicine and Pharmacology
DOI: 10.3969/j.issn.1002-6819.2009.08.020
Database: Compendex
41. Accession number: 20094512421244
Title: Kinetic analysis and pyrolysis characteristics of coconut shells at different heating rates
Authors: Yang, Kunbin1, 2 ; Peng, Jinhui1, 2 ; Zhang, Libo1, 2 ; Guo, Shenghui1, 2 ; Xia, Hongying1, 2
Author affiliation: 1 Faculty of Materials and Metallurgical, Kunming University of Science and Technology,
2 Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China
Corresponding author: Peng, J. (yangkunbin@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 226-230
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The pyrolysis characteristics and kinetics of coconut shells were investigated via thermo-gravimetric analysis (TGA) at different heating rates (5, 20,
Number of references: 27
Main heading: Thermogravimetric analysis
Controlled terms: Activation energy - Adsorption - Adsorption isotherms - Atmospheric temperature - Distribution functions - Heating - Heating rate - Pore structure - Pyrolysis - Shells (structures)
Uncontrolled terms: Coconut shells - Distributed activation energy model - Kinetic analysis - Mass loss - Pyrolysis kinetics - Pyrolysis mechanism - Pyrolysis process - Pyrolysis temperature - Rapid pyrolysis - Reaction property - Three stages - Weight loss - Weight loss rates
Classification code: 931.3 Atomic and Molecular Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 922.1 Probability Theory - 802.3 Chemical Operations - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 801 Chemistry - 643.1 Space Heating - 642.1 Process Heating - 641.2 Heat Transfer - 641.1 Thermodynamics - 443.1 Atmospheric Properties - 408.2 Structural Members and Shapes
DOI: 10.3969/j.issn.1002-6819.2009.08.041
Database: Compendex
42. Accession number: 20094512421257
Title: Effect of high pressure processing on refrigerated shelf-life of sliced smoked cooked ham
Authors: Han, Yanqing1 ; Zhang, Qiuqin1 ; Xu, Xinglian1 ; Zhou, Guanghong1 ; Xu, Baocai2 ; Liu, Junchang2
Author affiliation: 1 Key Lab. of Meat Processing and Quality Control, Ministry of Education,
2 Technology Development Department, Yurun Food Group Company Limited,
Corresponding author: Xu, X. (xlxu@njau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 305-311
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The objective of this study is to evaluate the microbiological, physico-chemical and sensory properties of sliced vacuum-packaged smoked cooked ham after high pressure treatment and determine if high pressure processing (HPP) is a valid preservation method to reduce the growth of spoilage microorganisms without modification of its quality properties. Slices of cooked vacuum-packaged ham were submitted to high pressure treatments at 400 and 600 MPa for 10 min at
Number of references: 33
Main heading: Bacteria
Controlled terms: Bacteriology - Body fluids - Chemical modification - Food preservation - Lactic acid - Meats - Organic acids - Pressure effects - Vacuum
Uncontrolled terms: After-treatment - Competition ability - Cooked ham - Cooked meat - Detection limits - Effect of high pressure - Efficient method - Enterobacteria - Enterobacteriaceae - High pressure processing - High pressure treatments - Lactic acid bacteria - Low level - Meat products - Mesophiles - pH value - Physical/chemical properties - Physico-chemicals - Pressure level - Psychrotrophs - Quality properties - Refrigerated storages - Sensory analysis - Sensory properties - Shelf-life - Sliced cooked ham - Spoilage microorganisms - Storage periods - Ultra high pressure processing
Classification code: 822.3 Food Products - 822.2 Food Processing Operations - 804.1 Organic Compounds - 802.3 Chemical Operations - 931.1 Mechanics - 802.2 Chemical Reactions - 633 Vacuum Technology - 461.9 Biology - 461.2 Biological Materials and Tissue Engineering - 801.2 Biochemistry
DOI: 10.3969/j.issn.1002-6819.2009.08.054
Database: Compendex
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
43. Accession number: 20094512421235
Title: Simulation model of stem node growth of tomato in long season cultivation in northern solar greenhouse
Authors: Luo, Xinlan1, 3 ; Li, Tianlai1, 2 ; Qiu, Jiaqi1, 2 ; Gao, Xining3 ; Han, Yadong3 ; Zhong, Yan1, 2 ; Yan, Adan1, 2
Author affiliation: 1 Key Laboratory of Protected Horticulture of
2
3
Corresponding author: Li, T. (ltl@syau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 174-179
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: A simulation model of stem growth of tomato in long season cultivation in solar greenhouse was developed based on the Ecophysiological Processes of tomato organ. The foundation on which Simulation Model of leaves and fruit of Tomato would be built was the simulation model of stem segments. The varieties were Caruso and Carter Linna applied to long season cultivation in solar greenhouse. Some parameters such as maximum rate of node initiation were calculated or given. The results showed that the simulated and observed data of tomato stem were agreeable and the average relative error was 0.7%-9%. The correlation coefficients between simulated and observed data were 0.9964 and intercept was
Number of references: 21
Main heading: Simulators
Controlled terms: Fruits - Greenhouses - Solar heating
Uncontrolled terms: Average relative error - Correlation coefficient - Ecophysiological process - Numbers of stem nodes - Observed data - Simulated data - Simulation model - Simulation models - Solar greenhouse - Stem growth - Tomato
Classification code: 821.6 Farm Buildings and Other Structures - 821.4 Agricultural Products - 671 Naval Architecture - 662.1 Automobiles - 657.1 Solar Energy and Phenomena - 655.2 Satellites - 654.1 Rockets and Missiles - 643.1 Space Heating - 642.1 Process Heating - 621 Nuclear Reactors - 402.1 Industrial and Agricultural Buildings
DOI: 10.3969/j.issn.1002-6819.2009.08.032
Database: Compendex
44. Accession number: 20094512421231
Title: Design and implementation of operational system for national crop growth condition monitoring with remote sensing
Authors: Pei, Zhiyuan1 ; Guo, Lin1 ; Wang, Qingfa1
Author affiliation: 1 Chinese Academy of Agricultural Engineering,
Corresponding author:
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 152-156
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The crop growth condition monitoring is one of the most important parts of agricultural condition monitoring. In order to build an operational system for crop growth condition monitoring, the method and the architecture with remote sensing and ground survey were introduced in the paper. For remote sensing, the temporal-spatial parameters derived from NDVI time series could be used to describe the crop growth condition from different respects. For ground survey, a nationwide network involving 200 counties distributed in the major farming areas had been set up for ground truth information acquisition. A kind of Client/Server (C/S) and Browser/Server (B/S) hybrid architecture of the operational system was designed to facilitate different operation modes of remote sensing and ground survey. However, some problems need to be solved in the operational system. Because of crop species difference and regional variety, there is not a common standard of crop growth condition evaluation in ground survey. Because there is still some limits from crop growth condition monitoring to agricultural production, maybe the model coupling of crop growth model with crop growth condition evaluation model by remote sensing is needed and the C/S structure needs to be divided further into function layer and application layer to make it easier to perform the system integration and maintenance. The study area was selected in major winter growing regions in
Number of references: 11
Main heading: Condition monitoring
Controlled terms: Crops - Industrial applications - Remote sensing - Surveys - Time series
Uncontrolled terms: Agricultural conditions - Agricultural productions - Application layers - Browser/server - C/S structure - Client/server - Common standards - Crop growth condition - Crop growth model - Crop monitoring - Ground surveys - Ground truth - Growing regions - Hybrid architectures - Information acquisitions - Model coupling - NDVI time series - Operation mode - Operational system - Operational systems - Spatial parameters - Study areas - System architecture - System integration
Classification code: 913.5 Maintenance - 913 Production Planning and Control; Manufacturing - 903.1 Information Sources and Analysis - 901.4 Impact of Technology on Society - 922.2 Mathematical Statistics - 821.4 Agricultural Products - 706 Electric Transmission and Distribution - 603 Machine Tools - 405.3 Surveying - 731.1 Control Systems
DOI: 10.3969/j.issn.1002-6819.2009.08.028
Database: Compendex
45. Accession number: 20094512421242
Title: Deacidification of high-acid rice bran oil by esterification for the raw material of biodiesel
Authors: Zeng, Qingmei1 ; Han, Shu1 ; Zhang, Dongdong1 ; Li, Zhiqiang1 ; Si, Wengong1
Author affiliation: 1 Engineering Research Center of Bio-Process, Ministry of Education, Hefei University of Technology,
Corresponding author: Zeng, Q. (zengqingmei-1@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 215-219
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: To take full advantage of the high-acid rice bran crude oil, the authors carried out experiments to deacidify high-acid rice bran crude oil by esterification for the raw material of biodiesel. In this paper, the esterifying catalytic activity of several catalysts and the influence of glycerol dosage, catalyst dosage, reaction temperature and reaction time on deacidification were investigated. The results showed that ZnO had a strong catalytic activity. The optimum conditions of esterification with ZnO were the theoretical amount of glycerol dosage (
Number of references: 15
Main heading: Catalyst activity
Controlled terms: Acids - Biodiesel - Catalysis - Crude petroleum - Electrochemical sensors - Esterification - Esters - Furfural - Glycerol - Semiconducting zinc compounds - Zinc oxide
Uncontrolled terms: Acid value - Catalytic activity - Crude oil - Deacidification - Optimum conditions - Reaction temperature - Reaction time - Rice bran oil - Rice brans - ZnO
Classification code: 804.2 Inorganic Compounds - 804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 801.4.1 Electrochemistry - 801 Chemistry - 732.2 Control Instrumentation - 712.1.2 Compound Semiconducting Materials - 523 Liquid Fuels - 512.1 Petroleum Deposits
DOI: 10.3969/j.issn.1002-6819.2009.08.039
Database: Compendex
46. Accession number: 20094512421218
Title: Buffer property analysis of spaced-damping layer bogie wheel
Authors: Sun, Dagang1 ; Gan, Qiyin1 ; Yang, Zhaomin2 ; Yan, Bijuan1
Author affiliation: 1 Mechanical and
2 Physics Department,
Corresponding author: Gan, Q. (ganqiyin@sohu.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 78-82
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Based on the current situation of poor vibration damping performance of traditional bogie wheel, a kind of spaced-damping layer structure was applied to the bogie wheel to improve its vibration damping performance. A crawler tractor was taken as an application example, the vibration damping models for the whole vehicle and single bogie wheel were established, and the amplitude-frequency characteristic response functions of bogie wheels were deduced. With the performance simulation and comparative analysis between the traditional and improved bogie wheels performed by Matlab, the results show that the vibration suffered by the crawler tractor can be buffered effectively by the new bogie wheels. With strength analysis of the improved bogie wheels carried out by ANSYS, the results show their strength can meet the operating requirements under the different working conditions of the crawler tractor.
Number of references: 16
Main heading: Vibration analysis
Controlled terms: Bogies (railroad rolling stock) - Damping - Frequency response - MATLAB - Tractors (agricultural) - Tractors (truck) - Vehicle wheels - Vehicles
Uncontrolled terms: Amplitude frequency characteristics - Application examples - Bogie wheel - Buffer - Comparative analysis - Current situation - Damping layers - Operating requirements - Performance simulation - Strength analysis - Vibration-damping - Vibrations - Working conditions
Classification code: 723.5 Computer Applications - 731.1 Control Systems - 751.2 Acoustic Properties of Materials - 821.1 Agricultural Machinery and Equipment - 921 Mathematics - 931.1 Mechanics - 943.2 Mechanical Variables Measurements - 723.1.1 Computer Programming Languages - 432 Highway Transportation - 601.2 Machine Components - 663.1 Heavy Duty Motor Vehicles - 682.1 Railroad Rolling Stock, General - 682.1.1 Railroad Cars - 682.1.2 Locomotives - 703.1 Electric Networks
DOI: 10.3969/j.issn.1002-6819.2009.08.014
Database: Compendex
47. Accession number: 20094512421216
Title: Standard of farmland drainage based on multi-attribute analysis
Authors: Guo, Xuning1 ; Hu, Tiesong1 ; Tan, Guangming1
Author affiliation: 1 State Key Laboratory of Water Resource and Hydropower Engineering Science,
Corresponding author: Hu, T. (tshu@whu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 64-70
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: A farmland drainage criterion is one of the most important references for determination of scale and layout of farmland drainage construction. Recently, the environmental, ecological and social effects of farmland drainage appear more apparently and get more and more attention. Therefore, how to take its multi-effects into full consideration, to evaluate the benefits of farmland drainage construction objectively and to determine the appropriate scale and layout of drainage project are the main issues urgent to be solved for the farmland drainage criteria research. The research status of farmland drainage criteria was generalized from the perspective of economy, environment, ecology and society. And its multi-attributes in these terms were discussed in greater details here. In addition, the determination of drainage criteria just considering its economic benefits but ignoring its environmental, ecological and societal effects is pointed out as its main disadvantage. Aiming that, the necessity of research on the integrated control criteria of farmland drainage was raised. Besides, its development trend and some questions needed deeper research were also illustrated.
Number of references: 24
Main heading: Drainage
Controlled terms: Ecology - Economics - Farms - Integrated control - Research
Uncontrolled terms: Development trends - Economic benefits - Environment - Farmland drainage - Multi-attribute analysis - Multi-attributes - Social effects
Classification code: 911.2 Industrial Economics - 901.3 Engineering Research - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 731.1 Control Systems - 971 Social Sciences - 502 Mines and Quarry Equipment and Operations - 442 Flood Control; Land Reclamation - 406 Highway Engineering - 401 Bridges and Tunnels - 454.3 Ecology and Ecosystems
DOI: 10.3969/j.issn.1002-6819.2009.08.012
Database: Compendex
48. Accession number: 20094512421220
Title: Experiment on ramie peeling machine and process parameters optimization
Authors: Yang, Yaoduan1 ; Deng, Jianfeng2
Author affiliation: 1 Mechanoelectronic Engineering Department, Loudi Vocational and
2 Department of Mechanical and Electrical Engineering, Yiyang Vocational and
Corresponding author: Yang, Y. (ouyangzhang22@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 93-98
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The process parameters for ramie peeling are the fundamental guarantee for peeling machine design and mechanical analysis. According to the characteristics of mechanical and cutting mechanism movement of peeling ramie machine, ramie peeling experiment was designed and carried out for improving the peeling quality and efficiency. The authors determined the basic process parameters, the mechanical and physical properties of ramie bark and analyzed the relationship of those parameters with peeling. The experimental results showed that with the pressure increasing, the contents of the trash and colloid in fibers were reduced, and the quality of ramie fibers was improved, but the loss rate was increased. The increase of cutting velocity of ramie bark would help improving work efficiency, but the quality of ramie fibers, however, was significantly reduced and the loss rate was increased. The analysis of the effects on peeling quality and production efficiency showed that the best value of the positive pressure and the cutting velocity were 220 N and
Number of references: 21
Main heading: Hemp
Controlled terms: Compression ratio (machinery) - Cutting - Experiments - Fabrics - Fibers - Friction - Machine design - Mechanical properties - Optimization - Shear strength
Uncontrolled terms: Best value - Compression ratios - Cutting mechanisms - Cutting velocity - In-fiber - Loss rates - Mechanical analysis - Mechanical and physical properties - Positive pressure - Process parameters - Processing parameters - Production efficiency - Ramie fibers - Sliding friction coefficient - Work efficiency
Classification code: 817 Plastics and Other Polymers: Products and Applications - 819.1 Natural Fibers - 819.4 Fiber Products - 951 Materials Science - 821.4 Agricultural Products - 921.5 Optimization Techniques - 931.1 Mechanics - 901.3 Engineering Research - 812 Ceramics, Refractories and Glass - 618.1 Compressors - 421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 601 Mechanical Design - 604.1 Metal Cutting - 606.2 Abrasive Devices and Processes - 612.1 Internal Combustion Engines, General
DOI: 10.3969/j.issn.1002-6819.2009.08.017
Database: Compendex
49. Accession number: 20094512421253
Title: Application of scanning probe microscopes to nanostructures of biomacromolecules in food systems
Authors: Deng, Yun1, 2 ; Xiao, Chenlong2 ; Zhu, Liwei2 ; Luo, Wen2
Author affiliation: 1 SJTU-
2
Corresponding author: Deng, Y. (y_deng@sjtu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 280-287
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The principles, advantages and disadvantages of scanning tunnel microscope (STM), atomic force microscopy (AFM) and scanning near-field optical microscope (SNOM) were introduced and compared. The current applications of STM, AFM and SNOM to imaging and manipulating nanostructure of biomacromolecules, such as polysaccharides, starch, proteins and lipids were focused in food systems. These show that STM, AFM and SNOM provide a basis for examining the macromolecular structure of foods under different conditions, and that they have a great potential prospect in the mapping of structure of food system.
Number of references: 62
Main heading: Atomic force microscopy
Controlled terms: Biopolymers - Food products - Microscopes - Nanostructures - Near field scanning optical microscopy - Polysaccharides - Probes - Scanning - Scanning tunneling microscopy
Uncontrolled terms: AFM - Biomacromolecule - Biomacromolecules - Food system - Macromolecular structures - Scanning near-field optical microscope - Scanning probe microscope
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 933 Solid State Physics - 822.3 Food Products - 941 Acoustical and Optical Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 815.1.1 Organic Polymers - 712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 461.2 Biological Materials and Tissue Engineering - 741.3 Optical Devices and Systems - 804.1 Organic Compounds - 815.1 Polymeric Materials - 761 Nanotechnology
DOI: 10.3969/j.issn.1002-6819.2009.08.050
Database: Compendex
50. Accession number: 20094512421258
Title: Technology for supercritical CO2 extraction of bamboo shoot oil and components of product
Authors: Lu, Baiyi1 ; Bao, Jianfeng1 ; Shan, Lin1 ; Zhang, Ying1
Author affiliation: 1 College of Biosystems Engineering and Food Science,
Corresponding author: Zhang, Y. (yzhangzju@zju.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 312-316
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: In order to optimize the technological parameters of oil extraction from bamboo shoots (P. Pubescens) using supercritical CO2 extraction technique, the effects of extraction pressure, extraction temperature, extraction time and CO2 discharge on yield of the oil were investigated, and the components in the oil were also analyzed using gas chromatography-mass spectrometry (GC/MS). The optimum extraction parameters were confirmed as follows: extraction pressure, extraction temperature, extraction time and CO2 discharge were 25 MPa,
Number of references: 17
Main heading: Bamboo
Controlled terms: Acids - Chromatographic analysis - Effluent treatment - Gas chromatography - Mass spectrometry - Supercritical fluids
Uncontrolled terms: Extraction pressure - Extraction techniques - Extraction temperatures - Extraction time - Gas chromatography-mass spectrometry - GC/MS analysis - Main component - Oil extraction - Optimum conditions - Pubescens - Supercritical CO - Technological parameters
Classification code: 943.3 Special Purpose Instruments - 931.2 Physical Properties of Gases, Liquids and Solids - 821.4 Agricultural Products - 811.1 Pulp and Paper - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.3 Chemical Operations - 801 Chemistry - 452.4 Industrial Wastes Treatment and Disposal
DOI: 10.3969/j.issn.1002-6819.2009.08.055
Database: Compendex
51. Accession number: 20094512421229
Title: Multiple cropping index of
Authors: Zuo, Lijun1, 2 ; Dong, Tingting2, 3 ; Wang, Xiao2 ; Zhao, Xiaoli2 ; Yi, Ling2
Author affiliation: 1 Key Laboratory of Resources Remote Sensing and Digital Agriculture, Ministry of Agriculture,
2
3 Research Institute of Water Resource and Hydropower of
Corresponding author: Zuo, L. (lefillion_g@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 141-146
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Multiple cropping is an important mean for increasing regional grain output and also a crucial cropping pattern in
Number of references: 15
Main heading: Forestry
Controlled terms: Agricultural machinery - Crops - Decision trees - Pixels - Radiometers - Vegetation
Uncontrolled terms: Characteristic phases - Crop phenology - Cropping patterns - Enhanced vegetation index - Farming system - Moderate resolution imaging spectroradiometer - Multi-temporal - Multiple cropping index - Northern China - Phenology - Pixel level - Tillage
Classification code: 961 Systems Science - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products - 912.1 Industrial Engineering - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 922 Statistical Methods - 944.7 Radiation Measuring Instruments - 821.0 Woodlands and Forestry - 742.2 Photographic Equipment - 723.5 Computer Applications - 722.2 Computer Peripheral Equipment - 525.1 Energy Resources and Renewable Energy Issues - 461.9 Biology - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI: 10.3969/j.issn.1002-6819.2009.08.026
Database: Compendex
52. Accession number: 20094512421209
Title: Formula for direct calculation of contracted depth of channel with trapezoidal section
Authors: Zhao, Yanfeng1, 2 ; Wang, Zhengzhong1, 2 ; Lu, Qin1
Author affiliation: 1 College of Water Resources and Architectural Engineering, Northwest Agriculture and
2
Corresponding author: Zhao, Y. (zhyf2009@yahoo.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 24-27
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: The channel with trapezoidal section is used commonly in practical engineering. To get the contracted depth in the section, high order implicit equation need to be solved. Conventional methods, such as graphic approach and trial calculation method, are complex, inefficient and with large error. So a direct calculation formula with simple form, high efficiency and high precision, is presented in the current work. By introducing a non-dimensional width of water surface, an iterative formula with high efficiency for calculating contracted depth is obtained by identical transformation of the fundamental equation of contracted depth. The reasonable iterative initial value is also given by optimizing the formula form. The non-dimensional contracted depth ranges from 0.01 to 0.5, which satisfies the requirement of practical engineering. Finally, the direct formula for calculating the contracted depth is obtained. Error analysis and a practical engineering example are given to show the advantages of the current direct calculation formula.
Number of references: 17
Main heading: Irrigation canals
Controlled terms: Dams - Error analysis - Hydraulic models - Irrigation - Position control
Uncontrolled terms: Calculation methods - Contracted depth - Conventional methods - Depth range - Direct calculation - Direct calculations - Fundamental equations - High efficiency - High order - High precision - Implicit equation - Initial values - Iterative formulas - Non-dimensional surface width - Practical engineering - Trapezoidal section - Water surface
Classification code: 441.1 Dams - 446.1 Water Supply Systems - 632.1 Hydraulics - 731.3 Specific Variables Control - 821.3 Agricultural Methods - 921.6 Numerical Methods
DOI: 10.3969/j.issn.1002-6819.2009.08.005
Database: Compendex
53. Accession number: 20094512421224
Title: Pump performance analysis based on least squares support vector machine
Authors: Wan, Yi1
Author affiliation: 1 College of Physics and Electronic Information Engineering,
Corresponding author: Wan, Y. (yiwan246@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 114-118
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Performance curve of pump is important basis of pump types selecting, optimal operation and pump station running. The curve is usually obtained from experiment or by fitting the experimental data of performance graph, but those methods are complex, high expense and imprecision. Based on optimum parameter selection with cross validation, the least squares support vector machine (LSSVM) method was presented for pump performance forecast in the light of the difficulty of the above two methods. Complicated and strong nonlinear pump performance curve was simulated by network design and conformation of LSSVM learning algorithm and the optimized SVM parameters were selected by the method of network searching and cross validation. Compared the errors with output values of the optimized model, test value and output value from polynomial fitting and RBFNN, LSSVM whose parameter was optimized with cross validation had excellent ability of nonlinear modeling and generalization. It gained high precision under limited learning samples (mean relative error is 0.02378%) and provided a simple and feasible intelligent approach for pump performance analysis.
Number of references: 9
Main heading: Curve fitting
Controlled terms: Gears - Image retrieval - Learning algorithms - Multilayer neural networks - Nonlinear analysis - Optimization - Pumps - Support vector machines - Vectors
Uncontrolled terms: Cross validation - Experimental data - High precision - Learning samples - Least squares support vector machines - Mean relative error - Network design - Nonlinear modeling - Optimal operation - Optimum parameters - Output values - Performance curve - Polynomial fittings - Pump performance - Pump station
Classification code: 741 Light, Optics and Optical Devices - 921 Mathematics - 921.1 Algebra - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 921.5 Optimization Techniques - 921.6 Numerical Methods - 922.2 Mathematical Statistics - 731.1 Control Systems - 461.1 Biomedical Engineering - 601.2 Machine Components - 618.2 Pumps - 703.1.1 Electric Network Analysis - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 723.4 Artificial Intelligence
DOI: 10.3969/j.issn.1002-6819.2009.08.021
Database: Compendex
54. Accession number: 20094512421221
Title: Noise analysis and control of pineapple leaf fiber extractor
Authors: Deng, Ganran1 ; Zhang, Jin1 ; Ou, Zhongqing1 ; Li, Mingfu1 ; Lian, Wenwei1
Author affiliation: 1 State Engineering and
Corresponding author: Zhang, J. (Zj1204@tom.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages: 99-104
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract: Measuring and analysis technology based on fast fourier transform was implemented for the problem of noise signal of pineapple leaf fiber extractor by disassembling the hood, concave board and residue discharge sheet, respectively. The main factors that increased aerodynamic noise were in sequence of concave board, the hood and residue discharge sheet. To control the noise level, the gap between the blades and the hood was increased from
Number of references: 15
Main heading: Machine design
Controlled terms: Fast Fourier transforms - Fibers - Interferometry - Spectrum analysis - Spectrum analyzers
Uncontrolled terms: Aerodynamic noise - Hearing protection - Noise analysis - Noise levels - Noise signals - Pineapple leaf fiber - Technology-based
Classification code: 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.4 Optical Variables Measurements - 941 Acoustical and Optical Measuring Instruments - 922.2 Mathematical Statistics - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 921.3 Mathematical Transformations - 819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 601 Mechanical Design - 921 Mathematics
DOI: 10.3969/j.issn.1002-6819.2009.08.018
Database: Compendex
55. Accession number: 20094912520882
Title: Effects of working parameters on seed suction performance of seeder device for super hybrid rice seeds
Authors:Wang, Zhaohui (1); Ma, Xu (2); Jia, Ruichang (2)
Author affiliation:(1) College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China; (2) Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (3) College of Food Engineering, Jilin Agricultural University, Changchun 130118, China
Corresponding author:Ma, X. (maxu1959@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume: 25
Issue: 8
Issue date: August 2009
Publication year: 2009
Pages:88-92
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural
Abstract:To further enhance the precision seedling productivity of super hybrid rice and seeding accuracy, the effects of working parameters (such as seeds thickness, double-sucker interval and vibration frequency) on seed suction performance were studied, taken a seeder device of air-suction cylinder seeder for super hybrid rice as test object. The regression model between seed suction performance and working parameters was obtained with three factors and five levels experiments by using computer vision technology and vibration analyzer. The results showed that seed-layer thickness was the most important performance index among the experimental factors under the conditions of vacuum pressure 3.1 kPa, rotate speed 14 r/min and vibration frequency among 90 and 104 Hz. The prime value of seed suction performance was 93.12% when the seed-layer thickness
Number of references: 16
Main heading: Vibration analysis
Controlled terms: Agricultural machinery - Computer vision - Cylinders (shapes) - Regression analysis
Uncontrolled terms:Computer vision technology - Experimental factors - Hybrid rice seed - Parameters optimization - Performance indices - Regression model - Rotate speed - Seed layer - Sower - Suction performance - Test object - Vacuum pressure - Vibration analyzer - Vibration frequency - Working parameters
Classification code: 922.2 Mathematical Statistics - 821.1 Agricultural Machinery and Equipment - 751.2 Acoustic Properties of Materials - 943.2 Mechanical Variables Measurements - 741.2 Vision - 723.5 Computer Applications - 408.2 Structural Members and Shapes - 731.6 Robot Applications
DOI:10.3969/j.issn.1002-6819.2009.08.016
Database: Compendex
Compilation and indexing terms, Copyright 2009 Elsevier Inc.