1. Accession number: 20091512023265
Title: Algorithm for handling uneven brightness in image processing of fogdrop micrograph
Authors: Chen, Yiqun1 ; Chang, Chun1 ; Tang, Bomin1
Author affiliation: 1 Nanjing Research Institute for Agriculture Mechanization, Ministry of Agriculture, Nanjing 210014, China
Corresponding author: Chen, Y. (chenyq@nriam.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: On studying distribution of fogdrops made by fog machine, computer can be used to analyze the images of fogdrop micrograph and obtain statistical data. Due to the optical effects, such images tend to have brighter center and darker edge, thus affecting the accuracy of statistical results. To eliminate the uneven brightness, the authors used the method of taper brightness factor to process the images. The authors applied this method in their program to deal with the micrograph of fogdrops from fog machine experiment, and obtained a uniform average brightness of image processing and accurate results. This method can also be applied to correct similar uneven brightness of center and edge in the micrograph caused by optical effects.
Number of references: 15
Main heading: Edge detection
Controlled terms: Fog - Image processing - Imaging systems - Luminance - Optical data processing
Uncontrolled terms: Brightness transform - Fogdrop - Optical effects - Statistical datum - Taper brightness factor
Classification code: 751.1 Acoustic Waves - 746 Imaging Techniques - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 941.4 Optical Variables Measurements - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing - 716 Telecommunication; Radar, Radio and Television - 443.1 Atmospheric Properties - 723.5 Computer Applications
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
2. Accession number: 20091512023307
Title: Screening of slow releasing substrate of matrix-based fertilizer and its nitrogen release mechanism
Authors: Zhang, Xiaodong1, 2, 3, 5 ; Shi, Chunyu1 ; Sui, Xueyan4 ; Cheng, Xiaoguang1
Author affiliation: 1 State Key Laboratory of Crop Biology, Agronomy College, Shandong Agricultural University, Tai'an 271018, China
2 Biological Resource Center, Shandong Academy of Agricultural Sciences, Ji'nan 250100, China
3 High-Tech Research Center, Shandong Academy of Agricultural Sciences, Ji'nan 250100, China
4 Shandong Institute of Agriculture Sustainable Development, Ji'nan 250100, China
5 Key Laboratory for Genetic Improvement of Crops Animal and Poultry of Shandong, Ji'nan 250100, China
Corresponding author: Shi, C. (scyu@sdau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to improve the slow-release performance of Matrix-Based Fertilizer, ten kinds of Matrix-Based Fertilizer were made with organic and inorganic substrates. Their nitrogen releasing orders were studied by alternate leaching method in sandy pole, and the slow-release effects of ten substrates were evaluated through the parameters of Logistic equations and Unweighted Pair-Group Method Using Arithmetic Averages cluster analysis of nitrogen releasing inflection. The result showed that the dynamics of nitrogen accumulated releasing rate could be quantitatively described by four equations: the first-order Kinetics equation, Elovich equation, Parabola equation and Logistic equation. However, the imitation of Logistic equation was the best. That was to say the Logistic equation was the most practical for imitating nitrogen release mechanism of MBF. Oxidized starch and lignin were the best slow-release organic substrate and bentonite was the best inorganic one.
Number of references: 19
Main heading: Nitrogen fertilizers
Controlled terms: Bentonite - Cluster analysis - Leaching - Nitrogen - Substrates
Uncontrolled terms: Elovich equations - First-order kinetics equations - Inorganic substrates - Leaching methods - Logistic equation - Matrix-based fertilizers (MBF) - Nitrogen release - Organic substrates - Oxidized starches - Release mechanism - Slow release - Slow/controlled-release fertilizer
Classification code: 821.2 Agricultural Chemicals - 813.1 Coating Techniques - 804 Chemical Products Generally - 802.3 Chemical Operations - 801 Chemistry - 922 Statistical Methods - 723 Computer Software, Data Handling and Applications - 712.1 Semiconducting Materials - 533.1 Ore Treatment - 482.2 Minerals - 461 Bioengineering and Biology - 714.2 Semiconductor Devices and Integrated Circuits
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
3. Accession number: 20091512023294
Title: Effects of the enzymolysis conditions on primary nutrition components of jujube juice
Authors: Lu, Zhoumin1 ; Zhang, Li1 ; Yin, Rong1 ; Zhang, Zhongliang1
Author affiliation: 1 College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author: Lu, Z. (lzm139@nwsuaf.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Based on the single experiment, orthogonal experiment was designed to optimize extraction technology parameters such as temperature, extraction time and enzyme dosage of jujube juice from Zizyphus Jujube Mill (Tuanzao) grown in Yanchuan Shaanxi Province. The results show that the influencing degree of technology parameters on soluble solids, the content of vitamin C and total sugar follows the order of temperature > extraction time > enzyme dosage and the ones of temperature is significant while the ones of extraction time and enzyme dosage is not significant. Under the condition of temperature
Number of references: 14
Main heading: Enzymes
Controlled terms: Experiments - Sugar (sucrose) - Sugars - Technology
Uncontrolled terms: Enzyme dosages - Extraction technologies - Extraction time - Jujube juice - Method - Orthogonal experiment - Soluble solids - Soluble solids contents - Sugar contents - Technology parameters - Vitamin-C
Classification code: 461.2 Biological Materials and Tissue Engineering - 801.2 Biochemistry - 804.1 Organic Compounds - 822.3 Food Products - 901 Engineering Profession - 901.3 Engineering Research
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
4. Accession number: 20091512023247
Title: Land potential productivity of dryland farming in Shouyang county, Shanxi Province
Authors: Liu, Qin1, 2 ; Yan, Changrong1, 2 ; He, Wenqing1, 2 ; Liu, Shuang1, 2
Author affiliation: 1 Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
2 Key Laboratory of Dryland Farming and Water-Saving Agriculture, Ministry of Agriculture, Beijing 100081, China
Corresponding author: Yan, C. (yancr@cjac.org.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: It is widely acknowledged that northern arid region is agricultural production base considered as the most promising potential area. Land potential productivity (LPP) as land essential attribute is drawing increasing attention. Based on the climate data from 1967 to 1999, soil physiochemical data and maps, with the support of geographic information system (GIS), LPP was computed according to the factors such as radiation, temperature, precipitation, and soil using mechanism method. The results show that water deficiency is the main limiting factor of climatic potential productivity, because climatic potential productivity becomes one third of light-temperature potential productivity according to water correction coefficient; the distribution characteristic of LPP is influenced by many factors, which is same as distribution characteristic of landform. The value of land potential productivity in the basin valley is the highest, and the value in mountain is the lowest.
Number of references: 17
Main heading: Productivity
Controlled terms: Agriculture - Arid regions - Geographic information systems - Landforms - Soils
Uncontrolled terms: Agricultural productions - As distributions - Climate datum - Correction coefficients - Distribution characteristics - Dryland farmings - GIS - Land potential productivity - Limiting factors - Northern arid region - Physiochemical datum - Shouyang county - Water deficiencies
Classification code: 913.1 Production Engineering - 903.3 Information Retrieval and Use - 901.4 Impact of Technology on Society - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 723.3 Database Systems - 483.1 Soils and Soil Mechanics - 481.1 Geology - 444 Water Resources - 443 Meteorology
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
5. Accession number: 20091512023332
Title: Effect of anaerobic fermentation of Spartina alterniflora under mesophilic conditions on the changes of lignocellulosic structure
Authors: Li, Jihong1, 2 ; Yang, Shiguan2 ; Zheng, Zheng2 ; Chen, Guangyin2 ; Zou, Xingxing2 ; Meng, Zhuo2
Author affiliation: 1 National Engineering Laboratory of Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing 102206, China
2 State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093, China
Corresponding author: Zheng, Z. (zzheng@nju.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Lignocellulosic structural changes of Spartina alterniflora before and after anaerobic fermentation under mesophilic conditions (
Number of references: 17
Main heading: Biochemical engineering
Controlled terms: Carbohydrates - Cellulose - Fermentation - Fourier transform infrared spectroscopy - Fourier transforms - Lignin - Scanning electron microscopy - X ray diffraction analysis
Uncontrolled terms: Anaerobic fermentation - Before and after - Characteristic peaks - Crystalline cellulose - Crystallinity indices - Fourier transform infra-red spectroscopies - Ft-ir spectrum - Lignocellulosic structure - Mesophilic conditions - Parenchyma cells - Sem - Shielding effects - Spartina alterniflora - Structural changes - Vascular bundles - X-ray diffractometers - XRD
Classification code: 815.1.1 Organic Polymers - 921.3 Mathematical Transformations - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 933.1.1 Crystal Lattice - 811.3 Cellulose, Lignin and Derivatives - 461.8 Biotechnology - 741.1 Light/Optics - 801 Chemistry - 801.2 Biochemistry - 802.2 Chemical Reactions - 804.1 Organic Compounds - 805.1.1 Biochemical Engineering
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
6. Accession number: 20091512023262
Title: Comparison of four methods for deciding objective weights of features for classifying stored-grain insects based on extension theory
Authors: Zhang, Hongtao1, 2 ; Mao, Hanping1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
2 Institute of Electric Power, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China
Corresponding author: Mao, H. (maohp@ujs.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The extension theory can be used to solve the problem of recognition of the stored-grain insects that have many different features with overlapping attributes. It is necessary to determine the objective weights of the features in the classification based on extension theory, avoiding the human factor from the traditional method of expert evaluation. Two methods for constructing the fuzzy decision matrix and the mean decision matrix were put forward. Four methods for deciding objective weights of the features, namely, the methods of maximizing deviations, standard variance between-class, criteria importance through inter-criteria correlation and the entropy, were used to classify the grain-stored insects. These four methods were applied to the two extension-theory classifiers for the stored-grain insects based on two methods for constructing standard and extensional matter-element matrices. The nine species of the stored-grain insects in the grain-storage bin were automatically recognized by the classifier based on the extension theory. The results showed that the maximizing deviation method for objective weights of features based on fuzzy decision matrix was the optimum scheme, and the correct identification ratio reached 93%.
Number of references: 12
Main heading: Decision theory
Controlled terms: Classifiers - Human engineering - Learning systems - Optimization
Uncontrolled terms: Decision matrix - Extension theory - Feature weights - Method for maximizing deviations - Stored-grain insects
Classification code: 961 Systems Science - 922.2 Mathematical Statistics - 921.5 Optimization Techniques - 921 Mathematics - 802.1 Chemical Plants and Equipment - 731.5 Robotics - 723.5 Computer Applications - 723.4 Artificial Intelligence - 461.4 Ergonomics and Human Factors Engineering
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
7. Accession number: 20091512023312
Title: Calculation and discussion of condition correction coefficient for drying performance of grain dryer
Authors: Xing, Zuoqun1 ; Yin, Xiaohui1 ; Gao, Guangzhi1 ; Xiu, Delong1 ; Yin, Siwan1 ; Sun, Peidong1
Author affiliation: 1 Drying Machine and Equipment Quality Supervision and Inspection Center of Ministry of Agriculture, Jiamusi 154007, China
Corresponding author: Xing, Z. (xzq8750@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: According to relevant drying theories, our study and practical experience were combined to discuss the correctness of the formula of condition correction coefficient. The accuracy and applicability of the model data table for calculating correction coefficient were discussed, which were presented by international standard ISO 11520-Agricultural grain driers-Determination of drying performance. Suggestions on the concrete application and future revision of the standard were put forward.
Number of references: 9
Main heading: Dewatering
Controlled terms: Dryers (equipment) - Fabrics - Grain (agricultural product)
Uncontrolled terms: Concrete applications - Correction coefficient - Dryers - Drying performance - Grain - International standards - Model datum - Performance - Practical experiences
Classification code: 642.2 Industrial Furnaces and Components - 802.1 Chemical Plants and Equipment - 802.3 Chemical Operations - 819.4 Fiber Products - 821.4 Agricultural Products
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
8. Accession number: 20091512023272
Title: Effects of blowimg agent on the properties of polyurethane foams based on corn stover
Authors: Wang, Tipeng1 ; Mao, Zhihuai2 ; Liang, Lingyun3 ; Dong, Changqing1 ; Yin, Jun2 ; Zhang, Lianhui2
Author affiliation: 1 Beijing Key Laboratory of Security and Clean Energy Technology, North China Electric Power University, Beijing 102206, China
2 College of Engineering, China Agricultural University, Beijing 100083, China
3 State Grain Administration, Beijing 100038, China
Corresponding author: Mao, Z. (maozhh@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Polyurethane (PU) foams were successfully prepared from liquefied corn stover polyol by varying the amount of blowing agent-water. The effects of water amount on the mechanical and thermal properties of PU foams were investigated by means of universal tensile machine, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The results showed that with an increase of water amount, tensile strength and elongation rate at break of the PU foams first increased and then decreased, their maximum values reached 1.87 MPa and 189.7% respectively. Furthermore, with an increase of water amount, the initial decomposition temperature decreased, glass transition temperature increased and the range of glass transition temperature expanded. The properties of PU foams can be changed by varying the amount of water.
Number of references: 17
Main heading: Blowing agents
Controlled terms: Differential scanning calorimetry - Glass - Glass transition - Photoresists - Polymers - Pyrolysis - Superconducting transition temperature - Thermodynamic properties - Thermogravimetric analysis - Water analysis
Uncontrolled terms: Corn stover - Elongation rates - Glass transition temperatures - Initial decomposition temperatures - Maximum values - Mechanical and thermal properties - Polyurethane foams - Tensile machines - Thermal decomposition - Water amounts
Classification code: 803 Chemical Agents and Basic Industrial Chemicals - 812.3 Glass - 813.2 Coating Materials - 802.3 Chemical Operations - 815.1 Polymeric Materials - 818.3.1 Processing Agents - 944.6 Temperature Measurements - 816.1 Processing of Plastics and Other Polymers - 802.2 Chemical Reactions - 641.1 Thermodynamics - 701.1 Electricity: Basic Concepts and Phenomena - 708.3 Superconducting Materials - 445.2 Water Analysis - 714.2 Semiconductor Devices and Integrated Circuits - 745.1 Printing - 801 Chemistry - 741.1 Light/Optics
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
9. Accession number: 20091512023259
Title: Design of the circuit for automated control system of welding with trailing peening
Authors: Yu, Fengkun1 ; Ma, Yuejin1 ; Zhao, Jianguo1 ; Li, Jianchang1 ; Chen, Zhiqiang1
Author affiliation: 1 College of Mechanical and Electrical Engineering, Agricultural University of Hebei, Baoding 071001, China
Corresponding author: Ma, Y. (myj@hebau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Equipment of welding with trailing peening uses gas as motivity at present. Its disadvantage is excessive extra equipment, lower control precision. In order to improve its disadvantage and increase production efficiency, the automated control system of welding with trailing peening using MCU (Micro Control Unit) AT
Number of references: 15
Main heading: Welding
Controlled terms: Automation - Carbon steel - Computers - Control system analysis - Light measurement - Microcomputers - Motors - Power converters - Servomechanisms - Stepping motors
Uncontrolled terms: A/d converters - Analog to digitals - At
Classification code: 722.4 Digital Computers and Systems - 723 Computer Software, Data Handling and Applications - 731 Automatic Control Principles and Applications - 731.1 Control Systems - 732 Control Devices - 732.1 Control Equipment - 941.4 Optical Variables Measurements - 722 Computer Systems and Equipment - 538.2 Welding - 545.3 Steel - 632.2 Hydraulic Equipment and Machinery - 632.4 Pneumatic Equipment and Machinery - 704.2 Electric Equipment - 705 Electric Generators and Motors - 705.3 Electric Motors
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
10. Accession number: 20091512023278
Title: Effects of waste leachate treatment using aged refuse bioreactors
Authors: Tao, Zhengwang1 ; Xia, Lijiang1 ; Wang, Jin'an2
Author affiliation: 1 College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
2 Siqing Branch, Beijing Environmental Sanitation Engineering Group Co. Ltd, Beijing 100101, China
Corresponding author: Xia, L. (xialj@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The aged refuse used was found to have large amount of highly activated microbial community and could be used as a substrate for bioreactor. The experiment of treating leachate using secondary aged refuse bioreactors was done in Beijing A-su-wei waste landfill site. It showed that secondary aged refuse bioreactors had excellent and steady removal ability and could adapt to fluctuant leachate admirably. The average concentrations of COD and NH3-N in inflow were 10992 mg/L and 1977 mg/L. When the hydraulic load was
Number of references: 15
Main heading: Leachate treatment
Controlled terms: Bioconversion - Bioreactors - Effluents - Industrial chemicals - Leaching - Refuse disposal - Salvaging - Street cleaning - Waste treatment
Uncontrolled terms: Aged refuse - Aged refuse disposal - Average concentrations - Hydraulic loads - Leachate - Loading time - Microbial communities - Removal rate - Treated effluents - Waste landfills
Classification code: 652.1 Aircraft, General - 671 Naval Architecture - 801.2 Biochemistry - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 914.1 Accidents and Accident Prevention - 533.1 Ore Treatment - 406.2 Roads and Streets - 452 Municipal and Industrial Wastes; Waste Treatment and Disposal - 452.2 Sewage Treatment - 452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 453.2 Water Pollution Control - 461.8 Biotechnology - 462.1 Biomedical Equipment, General - 483.1 Soils and Soil Mechanics
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
11. Accession number: 20091512023252
Title: Finite element analysis of mower rops in continuous roll
Authors: Wang, Xinyan1
Author affiliation: 1 College of Mechanical and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
Corresponding author: Wang, X. (xinyanwang1@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: According to the mower continuous roll in the sloped area, the finite element model was developed based on the nonlinear finite element method, the strength analyses were performed. The force, deflection and absorbed energy were predicted and the possibility of the deformed ROPS trespassing into the clearance zone during a lateral continuous roll was also predicted. Finally, the field test was conducted to evaluate the accuracy of FE model. It shows that the results of FE model matched well with field test results. The ROPS did not intrude into the driver's survival space (Clearance Zone). The FE metod provides reliable foundation for the design of vehicle ROPS.
Number of references: 11
Main heading: Finite element method
Uncontrolled terms: Absorbed energies - Agricultural vehicle - Continuous roll - Fe models - Field tests - Finite element models - Finite-element analysis - Non-linear finite element - Non-linear finite element methods - Rollover protective structure - Strength analysis
Classification code: 921.6 Numerical Methods
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
12. Accession number: 20091512023241
Title: Effects of alternate partial root-zone irrigation on water saving and quality regulating of flue-cured tobacco at different growth stages
Authors: Liu, Yongxian1, 2 ; Li, Fusheng1 ; Nong, Mengling1
Author affiliation: 1 Agricultural College, Guangxi University, Nanning 530005, China
2 Soil and Fertilizer Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
Corresponding author: Li, F. (zhenz@gxu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to investigate the theoretical foundation of irrigation method for tobacco production with water saving and quality regulating, the effect of alternate partial root-zone irrigation (APRI) on leaf physiological characteristics, water use and main quality indices of flue-cured tobacco during different growth stages under two fertilization levels was studied in a pot experiment. Results showed that APRI could regulate stomatal opening, reduce stomatal conductance, transpiration rate and water consumption of flue-cured tobacco, thus APRI could reduce irrigation water and increase water use efficiency (WUE). Compared with conventional irrigation (CI), APRI treatment during different growth stages of tobacco saved irrigation water by 10.6% under lower fertilization and 7.1% under higher fertilization, respectively. APRI also increased tobacco WUE by 2.3% under lower fertilization. APRI significantly increased K, soluble sugar and protein contents and then improved the quality of flue-cured tobacco. Compared with CI, APRI increased K and protein contents by 19.9% and 7.1% under lower fertilization, and by 29.5% and 15.1% under higher fertilization. And APRI treatment during in the root extending stage increased soluble sugar content by 17.6% and reduced the nicotine content by 25.7% under lower fertilization, respectively. Thus APRI at the root extending stage was an efficient irrigation method for tobacco production with water saving and quality regulating under lower fertilization in this study.
Number of references: 20
Main heading: Tobacco
Controlled terms: Biochemical oxygen demand - Curing - Flues - Irrigation - Sugar (sucrose) - Sugars - Water conservation - Water recycling - Water supply - Water treatment
Uncontrolled terms: Alternate partial root-zone irrigation - Flue-cured tobacco - Growth stages - Physiological characteristics - Quality - Water use efficiency
Classification code: 822.3 Food Products - 521 Fuel Combustion and Flame Research - 614.1 Steam Power Plant Design and Construction - 802.2 Chemical Reactions - 804.1 Organic Compounds - 815.1 Polymeric Materials - 818.3 Rubber and Elastomer Processing - 821.3 Agricultural Methods - 821.4 Agricultural Products - 453.2 Water Pollution Control - 402.1 Industrial and Agricultural Buildings - 403.1 Urban Planning and Development - 444 Water Resources - 453 Water Pollution - 445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and Disposal - 446.1 Water Supply Systems
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
13. Accession number: 20091512023263
Title: Monitoring and evaluation of the diseases of and yield winter wheat from multi-temporal remotely-sensed data
Authors: Liu, Liangyun1, 2 ; Song, Xiaoyu1 ; Li, Cunjun1 ; Qi, La1 ; Huang, Wenjiang1 ; Wang, Jihua1
Author affiliation: 1 National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
2 Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100190, China
Corresponding author: Liu, L. (lyliu@ceode.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Remote sensing techniques can provide crop growth information economically, rapidly, and objectively on a large scale. It has been widely used to monitor crop diseases. In this study, four Landsat TM images were acquired in the Beijing areas in winter wheat at four stages of growth-erecting stage (Apr. 10, 2007), booting stage (Apr. 26, 2007), anthesis stage (May 12, 2007) and grain filling stage (May 28, 2007) in Beijing. At the first three stages, the relative canopy spectra were also measured. All these multi-temporal remotely sensed data were analyzed to detect and evaluate winter wheat rust stripe and powdery mildew diseases. If diseases occurred, the spectral reflectances of diseased crops at visible and short infrared regions decreased, and the spectral reflectances at near-infrared region increased due to the decrease of plant chlorophyll concentration, water content and leaf area index (LAI); In addition, the red edge position decreased, namely, " blue shift " and NDVI values also decreased. Moreover, an early yield prediction model was developed using the Landsat TM images acquired at the erecting and booting stages, and the yield loss due to diseases was evaluated by using the measured yield and the predicted yield.
Number of references: 20
Main heading: Water content
Controlled terms: Chlorophyll - Crops - Fungi - Grain growth - Porphyrins - Reflection - Remote sensing
Uncontrolled terms: Blue shifts - Canopy spectrum - Chlorophyll concentrations - Crop disease - Crop growths - Grain fillings - Infrared regions - Landsat TM images - Leaf area indexes - Multi-temporal - Near infra-red regions - Powdery mildew - Predicted yields - Red-edge positions - Remote sensing techniques - Remotely sensed datum - Rust stripe - Spectral reflectances - Three stages - Winter wheats - Yield loss - Yield prediction models
Classification code: 933.1.2 Crystal Growth - 821.4 Agricultural Products - 804.1 Organic Compounds - 802.3 Chemical Operations - 801.2 Biochemistry - 741.1 Light/Optics - 731.1 Control Systems - 711 Electromagnetic Waves - 531.2 Metallography - 461.9 Biology - 444 Water Resources
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
14. Accession number: 20091512026362
Title: Relationship between erosion sediment yield and geomorphic development under simulated rainfall condition
Authors: Guo, Yanbiao1 ; Li, Zhanbin2, 3 ; Cui, Lingzhou4
Author affiliation: 1 College of Resources and Environment, South China Agricultural University, Guangzhou 510642, China
2 State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling 712100, China
3 Xi'an University of Technology, Xi'an 710048, China
4 College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325027, China
Corresponding author: Guo, Y. (guoyanbiao@scau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Geomorphy is one of the key factors that affect soil erosion in Watershed. For further study on the relationship between geomorphic development and erosion sediment yield, the process of geomorphic development and the variation of sediment yield were studied with generalized small watershed model by simulated rainfall experiment, high-precision photogrammetry and GIS technique. The results showed that the speed of sediment yield (Gt), sediment yield intensity of rainfall (Gp) and average sediment transport intensity (M) had a tendency of increase at the beginning and then decrease along with the process of geomorphic development. Variation trends of Gp and M turned from increase to decrease at critical ground fracture degree (about 32%) and critical relative watershed volume (about 65%). This critical phenomenon is very important for studying geomorphic development and sediment yield in depth. It also showed that ground fracture degree and relative watershed volume could be considered as one index of watershed development degree.
Number of references: 21
Main heading: Sedimentology
Controlled terms: Erosion - Fracture - Hydraulic models - Landforms - Sediment transport - Watersheds
Uncontrolled terms: Critical phenomenon - Geomorphic development - Ground fracture degree - High precision - Key factors - Relative watershed volume - Simulated rainfall - Small watersheds - Soil erosions - Watershed development
Classification code: 632.1 Hydraulics - 631.3 Flow of Fluid-Like Materials - 539.1 Metals Corrosion - 483.1 Soils and Soil Mechanics - 951 Materials Science - 483 Soil Mechanics and Foundations - 444.1 Surface Water - 421 Strength of Building Materials; Mechanical Properties - 407 Maritime and Port Structures; Rivers and Other Waterways - 481.1 Geology
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
15. Accession number: 20091512023283
Title: Cultivated land requisition-compensation balance by class conversion based on outcome of farm land classification
Authors: Yu, Lei1 ; Zhou, Yong1 ; Yun, Wenju2 ; Xia, Tian1
Author affiliation: 1 College of Urban and Environmental Science, Huazhong Normal University, Wuhan 430079, China
2 Land Consolidation and Rehabilitation Center, Ministry of Land and Resources, Beijing 100035, China
Corresponding author: Zhou, Y. (yzhou@mail.ccnu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Over the past decades in China, the situation of farmland protection was not optimistic with economic and social overall development and acceleration of urbanization process. Some problems have been existing in the work of farmland requisition- compensation that quantity and quality of compensated land is poorer than that of requisition. Farmland classification was applied to ensure the quantity and quality of supplemental farmland and to solve the problem of national food security. Take Hubei Province as an example, the results of farmland natural quality were taken as data source and established a basic database with farmland natural quality index and areas which were based on the representative samples by stratified sampling method. Based on that research, quantity-quality convert method of supplementary farmland was studied. Average natural quality classification index was calculated by area-weighted mean model, then, conversion index calculation model was established. Finally converted relationship table for each grades of farmland was established, which can obtain the requisition-compensation balance in provincial level. The table provided theoretical basis for strict farmland management and farmland requisition-compensation balance.
Number of references: 22
Main heading: Farms
Controlled terms: Land use - Planning - Regional planning
Uncontrolled terms: Class conversion - Cropland - Cultivated lands - Data sources - Farm-lands - Hubei provinces - Index calculations - National Foods - Natural quality classification - Quality indices - Representative samples - Requisition-compensation balance - Stratified samplings - Theoretical basis - Weighted means
Classification code: 403 Urban and Regional Planning and Development - 403.2 Regional Planning and Development - 442.2 Land Reclamation - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 912.2 Management
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
16. Accession number: 20091512023298
Title: Effects of soil bulk density on distribution and transportation and transformation of soil moisture and nitrogen under film hole irrigation
Authors: Tuo, Yunfei1 ; Fei, Liangjun1 ; Dong, Yanhui2 ; Cao, Jun1
Author affiliation: 1 Key Laboratory of Northwest Water Resources and Environment Ecology of Ministry of Education, Xi'an University of Technology, Xi'an 710048, China
2 College of Environment Science and Engineering, Chang'an University, Xi'an 710054, China
Corresponding author: Tuo, Y. (tuoyunfei@eyou.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to reveal the effects of soil bulk density on the soil moisture distribution and nitrogen transportation and transformation under the film hole irrigation, the indoor experiment of soil bulk density, was done and analyzed by the non-linear regression method, empirical formulas that indicates the relationship among the variable quantity and rate of soil moisture, the conversion quantity and rate of NO3--N and NH4--N, and soil bulk density, the transportation and transformation time were put forward. The results showed that correlation coefficients of empirical formulas were all bigger than 0.8200, standard errors were very small, and passed the 0.05 testing significance. So the formulas can reflect the distributing character of soil moisture and the regulation of nitrogen transportation and transformation for different soil bulk densities under the condition of film hole irrigation. This research result provides references for improving the utilization efficiency of soil moisture and nitrogen.
Number of references: 17
Main heading: Moisture determination
Controlled terms: Groundwater - Irrigation - Moisture meters - Nitrogen - Permittivity - Soil moisture
Uncontrolled terms: Correlation coefficients - Empirical formulas - Film hole irrigation - Indoor experiments - Non-linear regression methods - Research results - Soil bulk density - Soil moisture distribution - Standard errors - Utilization efficiencies
Classification code: 944.1 Moisture Measuring Instruments - 821.3 Agricultural Methods - 804 Chemical Products Generally - 944.2 Moisture Measurements - 708.1 Dielectric Materials - 483.1 Soils and Soil Mechanics - 444.2 Groundwater - 701 Electricity and Magnetism
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
17. Accession number: 20091512023309
Title: Design and analysis of cover switching mechanism for biomass(straw) briquetting machine
Authors: Lian, Meng1 ; Song, Zhongjie1 ; Wang, Weili1 ; Niu, Zhenhua1 ; Li, Baoqian1
Author affiliation: 1 College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
Corresponding author: Li, B. (nj280@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Commonly in the biomass briquetting machine, hydraulic cylinder directly impulses the covering for lock and unlock in the covering mechanism for closing and unclosing. But the unlock angle was finite in this kind of scheme. The angle might impact material feeding, and hydraulic cylinder was too big, so the structure was incompactly. Against those shortcomings, a new mechanism was designed to actualize the function. The new scheme adopted crank and rocker mechanism for lock and unlock the covering. This mechanism was powered by hydraulic cylinder. The covering would be more stable when the dead point appeared. The crank and rocker mechanism was calculated with auxiliary circle, and the model for simulation was established. The requirement of mechanism motion can be realized by simulation.
Number of references: 19
Main heading: Machine design
Controlled terms: Biological materials - Biomass - Briquetting - Cylinders (shapes) - Hydraulic equipment - Hydraulic machinery - Hydraulic servomechanisms - Hydraulic structures - Hydraulics
Uncontrolled terms: Angle between two polar positions - Compression machine - Covering mechanisms for closing and unclosing - Crank and rocker mechanisms - Hydraulic cylinders - Material feeding - New mechanisms - Switching mechanisms
Classification code: 611 Hydroelectric and Tidal Power Plants - 632.1 Hydraulics - 632.2 Hydraulic Equipment and Machinery - 732.1 Control Equipment - 802.3 Chemical Operations - 805.1.1 Biochemical Engineering - 821.5 Agricultural Wastes - 601 Mechanical Design - 407.2 Waterways - 408.2 Structural Members and Shapes - 441 Dams and Reservoirs; Hydro Development - 446.2 Related Hydraulic Structures - 461.2 Biological Materials and Tissue Engineering - 524 Solid Fuels - 525.1 Energy Resources and Renewable Energy Issues
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
18. Accession number: 20091512023261
Title: Detection of rust in citrus by hyperspectral imaging technology and band ratio algorithm
Authors: Cai, Jianrong1 ; Wang, Jianhei1 ; Chen, Quansheng1 ; Zhao, Jiewen1
Author affiliation: 1 School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Chen, Q. (chenjiang0218@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Hyperspectral imaging technology was attempted to detect rust in citrus in this study, and band ratio algorithm was proposed to overcome the adverse effects of uneven reflectance intensity due to curvature of spherical objects. First, Sheffield Index was used to determine two optimal bands (i.e. 625 nm and 717 nm), and the first ratio image was obtained by ratio transformation between them. Next, the optimal band with 625 nm and its neighbor band with 621 nm were performed to ratio transformation, and the second ratio image was obtained to build the mask. Then, the background noise of the first ratio image was removed by the mask. Finally, rust features on the surface of citrus were extracted by threshold segmentation and morphological image processing. The experimental results show that the rust in citrus can be detected with an accuracy of 92% by hyperspectral imaging technology and band ratio algorithm. This work demonstrates that band ratio algorithm was able to effectively reduce the adverse effects of uneven reflectance intensity, maximize the differences between bands, and improve the performance in detection of rust in citrus by hyperspetral imaging technology.
Number of references: 17
Main heading: Image processing
Controlled terms: Algorithms - Reflection - Technology
Uncontrolled terms: Band ratio algorithm - Citrus - Hyperspectral imaging - Nondestructive detection - Rust - Sheffield index
Classification code: 921 Mathematics - 901 Engineering Profession - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 711 Electromagnetic Waves
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
19. Accession number: 20091512023321
Title: 3D morphological reconstruction of cucumber leaf based on multiple images
Authors: Yang, Liang1, 2 ; Guo, Xinyu1 ; Lu, Shenglian1 ; Zhao, Chunjiang1
Author affiliation: 1 National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
2 Information Engineering Institute, Capital Normal University, Beijing 100037, China
Corresponding author: Zhao, C. (zhaocj@nercita.org.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: To create more realistic models for morphology of plant leaves, an approach to reconstructing the 3D model of a leaf blade from images is proposed in this paper. First, feature points in the edge and midrib of the leaf blade were extracted by using a corner detection algorithm, then the 3D coordinates of feature points were calculated by matching these feature points, the matching combines epipolar constraint and Sift feature descriptor. Second, the edge and midrib of the leaf surface were fitted using B-splines curve, then delaunay triangulation algorithm was used to generate a triangulate representation for the leaf blade. Finally, texture mapping was used to the geometry model for improving the appearance. Experimental results show that the model of cucumber leaf shape, reconstructed by the presented approach, is more natural and realistic.
Number of references: 14
Main heading: Three dimensional
Controlled terms: Edge detection - Image reconstruction - Imaging systems - Restoration - Splines
Uncontrolled terms: 3D reconstruction - Delaunay - Image-based model - Leaf morphology - Sift feature descriptor
Classification code: 902.1 Engineering Graphics - 751.1 Acoustic Waves - 746 Imaging Techniques - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 913.5 Maintenance - 723.5 Computer Applications - 716 Telecommunication; Radar, Radio and Television - 601.2 Machine Components - 409 Civil Engineering, General - 402 Buildings and Towers - 723.2 Data Processing and Image Processing
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
20. Accession number: 20091512023348
Title: Effects of tea polyphenols on freshness-keeping of partial-frozen silver carp in cold storage
Authors: Fan, Wenjiao1 ; Sun, Junxiu1 ; Chen, Yunchuan1 ; Jia, Hongfeng1 ; Qiu, Jian2 ; Chi, Yuanlong3
Author affiliation: 1 Food Science Department, Sichuan Higher Institute of Cuisine, Chengdu 610072, China
2 Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130012, China
3 College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065,China
Corresponding author: Fan, W. (wenjiaolc@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to study the effects of tea polyphenols on the quality changes of silver carp during partially frozen storage, silver carp samples, after being gutted and washed, were given a dip treatment in 0.1% tea polyphenols solution for 90 min at
Number of references: 20
Main heading: Silver
Controlled terms: Bacteriology - Cold storage - Freezing - Meats - pH effects - Phenols - Refrigerators - Spacecraft propulsion
Uncontrolled terms: 2-Thiobarbituric acids - Anti oxidations - Bacteria growths - Basic nitrogens - Freshness keepings - Frozen storages - K values - Partial freezing - pH values - Quality changes - Quality indices - Sensory scores - Silver carp - Tea polyphenols - Total bacterial counts
Classification code: 822.3 Food Products - 694.4 Storage - 801.1 Chemistry, General - 801.2 Biochemistry - 802.3 Chemical Operations - 804.1 Organic Compounds - 822.2 Food Processing Operations - 656.1 Space Flight - 654 Rockets and Rocket Propulsion - 644.3 Refrigeration Equipment and Components - 644.1 Refrigeration Methods - 547.1 Precious Metals - 461.9 Biology - 655.1 Spacecraft, General
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
21. Accession number: 20091512023310
Title: Simulation of flow control valve based on fuzzy control
Authors: Liu, Zhizhuang1, 2 ; Hong, Tiansheng1 ; Li, Zhen1 ; Song, Shuran1 ; Yue, Xuejun1 ; Fan, Zhiping1
Author affiliation: 1 Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Guangzhou 510642, China
2 Department of Electronic Engineering and Physics, Hunan University of Science and Engineering, Yongzhou 425100, China
Corresponding author: Hong, T. (tshong@scau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: To solve the control problem of micro-flow or low flow on pesticide in the course of variable rate spraying, an electromechanical flow control valve was developed with a miniature pin valve, a direct current (DC) motor, and gearset. A mathematical model of transfer function and arithmetic of fuzzy control were designed for the valve. The MATLAB simulation of the fuzzy controller and a PID controller was carried out on the electromechanical flow control valve. The results show that the fuzzy control is prior to PID control in the response speed and overshoot on this valve. Steady state errors are both within ± 3%.
Number of references: 15
Main heading: Fuzzy control
Controlled terms: Flow control - Flow simulation - Functions - MATLAB - Proportional control systems - Safety valves - Three term control systems - Time varying control systems - Two term control systems
Uncontrolled terms: Control problems - Direct-currents - Flow control valves - Flow valves - Fuzzy controllers - Low flows - Matlab simulations - PID control - PID controllers - Response speed - Steady-state errors - Variable rate spraying
Classification code: 914.1 Accidents and Accident Prevention - 731.3 Specific Variables Control - 731.1 Control Systems - 731 Automatic Control Principles and Applications - 921 Mathematics - 723.5 Computer Applications - 723.1.1 Computer Programming Languages - 631.1 Fluid Flow, General - 619.1.1 Pipe Accessories - 723.4 Artificial Intelligence
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
22. Accession number: 20091512026364
Title: Experimental study on the flow behavior and heat transfer of ceramic balls in a vertical descendant tube
Authors: Li, Zhihe1 ; Yi, Weiming1 ; Liu, Huanwei1 ; Yang, Yanqiang1
Author affiliation: 1 School of Light Industry and Agricultural Engineering, Shandong University of Technology, Zibo 255049, China
Corresponding author: Yi, W. (yiweiming@sdut.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The velocity field distribution of ceramic balls flow was measured with Particle Image Velocimetry (PIV) and the convective heat exchange experiments between ceramic balls of 90&C and the air of room temperature were conducted in a verticle descendant tube (Diameter
Number of references: 13
Main heading: Spheres
Controlled terms: Biomass - Ceramic materials - Experiments - Flow velocity - Flow visualization - Heat exchangers - Heat transfer - Tubes (components) - Velocity
Uncontrolled terms: Air temperatures - Axial velocities - Biomass pyrolysis - Ceramic balls - Convective heats - Experimental studies - Flow behaviors - Heat exchange coefficients - Mass flows - Maximum velocities - Particle-image velocimetry - Radial velocities - Regression functions - Residence time - Room temperatures - Tube reactors - Velocity fields - Vertical descendant tubes
Classification code: 943.2 Mechanical Variables Measurements - 931.1 Mechanics - 901.3 Engineering Research - 821.5 Agricultural Wastes - 812.1 Ceramics - 805.1.1 Biochemical Engineering - 641.2 Heat Transfer - 631.1 Fluid Flow, General - 631 Fluid Flow - 619.1 Pipe, Piping and Pipelines - 616.1 Heat Exchange Equipment and Components - 525.1 Energy Resources and Renewable Energy Issues - 511.2 Oil Field Equipment
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
23. Accession number: 20091512023290
Title: Technology for enzymatic preparation of rice foaming protein
Authors: Ruan, Hui1 ; Chen, Meiling1 ; Yu, Chao1 ; Zhao, Yan2 ; Pan, Minyao1 ; He, Guoqing1
Author affiliation: 1 Department of Food and Nutrition Science, Zhejiang University, Hangzhou 310029, China
2 Department of Biological Technology, Zhejiang Gongshang Univesity, Hangzhou 310058, China
Corresponding author: He, G. (gqhe@zju.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Rice foaming protein (RFP) was produced using rice protein concentrate (RPC) as raw material. Response surface methodology (RSM) was used to optimize the preparation conditions of RFP, and the protein extraction rate, nitrogen soluble index (NSI), foaming property and foaming stability of RFP were measured. The optimized conditions for producing RFP were [E]/[S] (alcalase dosage/substrate dosage) 0.01943 U/g, reaction time 57 minutes, the ratio of stuff to liquid 1:7.27, temperature
Number of references: 11
Main heading: Grain (agricultural product)
Uncontrolled terms: Alcalase - Alkaline protease - Enzymatic preparations - Foaming properties - Optimized conditions - pH values - Preparation - Preparation conditions - Protein extractions - Protein purities - Reaction time - Response surface methodologies - Rice foaming protein - Rice proteins
Classification code: 821.4 Agricultural Products
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
24. Accession number: 20091512023339
Title: Compression heating characteristics of foods during ultra high hydrostatic pressure processing
Authors: Wang, Biaoshi1 ; Li, Biansheng2 ; Zeng, Qingxiao2 ; Huang, Juan3 ; Ruan, Zheng2 ; Li, Lin2
Author affiliation: 1 School of Chemistry Science and Technology, Zhanjiang Normal College, Zhanjiang 524048, China
2 College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
3 Guangzhou Supervision and Inspection Institute of Product Quality, Guangzhou 510110, China
Corresponding author: Li, B. (febshli@scut.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Technological conditions of sterilization can be controlled accurately according to compression heating characteristics of foods. Compression heating characteristics of foods were investigated by simulating low heat losses with the teflon sleeve during ultra high hydrostatic pressure processing by on-line determination of temperature. The compression heating values of foods with high fat were higher than those of food with high water at an initial temperature of
Number of references: 17
Main heading: Compaction
Controlled terms: Food products - Heating - High pressure effects - Hydraulics - Hydrodynamics - Hydrostatic pressure - Organic polymers - Sterilization (cleaning) - Water content
Uncontrolled terms: Compression heating - Fat contents - High waters - On-line determinations - Pressure treatments - Sterilization technologies - Technological conditions - Temperature ranges - Ultra high hydrostatic pressures
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 822.3 Food Products - 822.2 Food Processing Operations - 815.1.1 Organic Polymers - 802.3 Chemical Operations - 643.1 Space Heating - 642.1 Process Heating - 632.1 Hydraulics - 631.2 Hydrodynamics - 631.1.1 Liquid Dynamics - 536.1 Powder Metallurgy Operations - 462.1 Biomedical Equipment, General - 444 Water Resources
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
25. Accession number: 20091512023333
Title: Kinetic analysis of cornstalk pyrolysis
Authors: Wang, Mingfeng1 ; Jiang, Enchen1 ; Zhou, Ling2
Author affiliation: 1 College of Engineering, South China Agricultural University, Guangzhou 510642, China
2 College of Agricultural Engineering, Tarim University, Alar 843300, China
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
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Pyrolysis of cornstalk was studied by using STA
Number of references: 21
Main heading: Pyrolysis
Controlled terms: Activation energy - Carbonization - Dehydration - Heating - Heating rate - MATLAB - Thermogravimetric analysis
Uncontrolled terms: Characteristic temperatures - Cornstalk - Dehydration process - Differential methods - Dsc curves - Experimental datum - Integral methods - Kinetic analysis - Matlab- softwares - Parameters - Pyrolysis mechanisms - Pyrolysis process - Pyrolysis rates - Random nucleations - Thermogravimetric apparatus
Classification code: 931.3 Atomic and Molecular Physics - 921 Mathematics - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 801 Chemistry - 723.5 Computer Applications - 723.1.1 Computer Programming Languages - 643.1 Space Heating - 642.1 Process Heating - 641.2 Heat Transfer - 445.1 Water Treatment Techniques
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
26. Accession number: 20091512023243
Title: Models for calculating phreatic evaporation from bare soil in Tarim Basin
Authors: Zhang, Yongming1 ; Hu, Shunjun2 ; Zhai, Luxin3 ; Shen, Bing1
Author affiliation: 1 Institute of Water Resources and Hydro-electric engineering, Xi'an University of Technology, Xi'an 710048, China
2 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
3 College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
Corresponding author: Zhang, Y. (yongmingzhang123@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: This paper is designed to study the laws of phreatic evaporation and improve the understanding to the ultimate rate and depth of phreatic evaporation. By analyzing the control conditions for establishing empirical formulae of phreatic evaporation, the calculation models for calculating the phreatic evaporation from bare land have been developed, which was based on the experimental data of phreatic evaporation on bare land at the Akesu Water Balance Experimental Station in Tarim Basin from 1990 to 1996. The results show that (1) developed calculation models are accord with the control conditions; (2) as for a given depth of groundwater table, the relation of phreatic evaporation and water surface evaporation is nonlinear and the phreatic evaporation is close to the ultimate rate when water surface evaporation reaches the infinity great; (3) the threshold of groundwater depth doesn't exist theoretically. With the reasonable construction, these models overcome the shortcomings that the phreatic evaporation is overestimated when atmosphere evaporation capacity is higher, and the phreatic evaporation increases linearly along with the water surface evaporation increases. The test results show that the calculation accuracy of the models is high and it can be applied to calculate phreatic evaporation in similar regions.
Number of references: 29
Main heading: Vapors
Controlled terms: Computer simulation - Evaporation - Geologic models - Groundwater - Groundwater resources - Hydrogeology - Mathematical models - Underground reservoirs
Uncontrolled terms: Bare lands - Bare soils - Calculation accuracies - Calculation models - Empirical formulas - Evaporation capacities - Experimental datum - Experimental stations - Ground water tables - Phreatic - Tarim Basin - Test results - Water balances - Water surfaces
Classification code: 804 Chemical Products Generally - 802.3 Chemical Operations - 723.5 Computer Applications - 921 Mathematics - 641.1 Thermodynamics - 444.2 Groundwater - 441.2 Reservoirs - 481.1 Geology
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
27. Accession number: 20091512026363
Title: Terrain visualization of small watershed in Loess Plateau based on contour lines
Authors: Duan, Junbiao1 ; Shangguan, Zhouping2 ; Jing, Xu1 ; Li, Jing1
Author affiliation: 1 College of Information Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China
2 Institute of Soil and Water Conservation, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author: Jing, X. (jingxu1818@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The terrain three-dimensional visualization of Loess Plateau is a basal research for "Digital Loess Plateau", which can provide scientific information for research of soil and water conservation. From viewing three-dimensional scene directly in GIS (Geographic Information System) software, it cannot give enough information of interactive communication. To solve that problem, a new means to visualize real sense terrain was supposed in this paper. It combined terrain interpolation algorithm in GIS software with OpenGL programming based on MFC. With the example of Kangjiagou watershed, the contour line data were preceded in AutoCAD and ArcView software to create regular grid DEM (Digital Elevation Model) data of ASCII form. Drawing triangle strip according to those data, calculating the normal value of each point with weighted average model, setting lighting and material model, adding dynamic sky background, making wander scene and view in different directions successfully combined with interactive function, all these ways to make sure the real sense three-dimension visualization of the small watershed had implemented well.
Number of references: 9
Main heading: Data visualization
Controlled terms: Contour measurement - Geographic information systems - Geomorphology - Landforms - Soil conservation - Surveying - Three dimensional - Visualization - Water conservation - Watersheds
Uncontrolled terms: Contour line - Loess Plateau - Normal - OpenGL - Three-dimensional visualization
Classification code: 723.3 Database Systems - 723.5 Computer Applications - 821.3 Agricultural Methods - 902.1 Engineering Graphics - 903.3 Information Retrieval and Use - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 943.3 Special Purpose Instruments - 723.2 Data Processing and Image Processing - 403.1 Urban Planning and Development - 405.3 Surveying - 444 Water Resources - 444.1 Surface Water - 481.1 Geology - 481.1.1 Geomorphology - 483.1 Soils and Soil Mechanics
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
28. Accession number: 20091512023251
Title: Simulation analysis and optimization design of claw scarifier
Authors: Cong, Hongbin1 ; Li, Ruxin1 ; Yu, Gaohong2 ; Li, Mingli1 ; Yang, Qiyong1 ; Xue, Li3
Author affiliation: 1 College of Mechanical and Electrical Engineering, Shandong Agricultural University, Tai'an 271000, China
2 Faculty of Mechanical Engineering and Automation, Zhejiang Sci-Tech University, Hangzhou 310018, China
3 Shan Dong Agriculture Machinery Research Institute, Jinan 250100, China
Corresponding author: Li, R. (rxli@sdau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Aimed at the phenomena of tillage claw arching soil and the whole machine shaking in the course of experimentation for the first-generation prototype, the moving trajectory of the tillage claws was studied and the causes for the phenomenon of soil being arched were found out. Structure of the claw scarifier was improved, based on discussion on the movement disciplinarian of the tillage claws, the key structural parameters that influenced its performance were found out, and were set as variables. In the environment of ADAMS system, virtual model was built and kinematics simulation experiments were done. Through analysis on the simulation results, technical parameters of the prototype were optimized, and second-generation prototype was made while experiments were done. The results showed that the second-generation prototype overcame effectively the problem of the machine shaking because of claws arching soil, and all other indicators reached the technical requirements of tillage equipment.
Number of references: 12
Main heading: Virtual reality
Controlled terms: Agricultural machinery - Agriculture - Optimization - Soils
Uncontrolled terms: Claw scarifier - Kinematics simulations - Optimization designs - Simulation analysis - Simulation results - Structural parameters - Technical requirements - Virtual models - Whole machines
Classification code: 483.1 Soils and Soil Mechanics - 723 Computer Software, Data Handling and Applications - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment - 921.5 Optimization Techniques
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
29. Accession number: 20091512023271
Title: Properties of hydrophobic enhanced biodegradable starch/PVA films
Authors: Li, Xiaorui1 ; Li, Ganghui1 ; Lai, Xiaojuan1
Author affiliation: 1 Key Laboratory of Aids Chemistry and Technology for Light Chemical Industry, Shaanxi University of Science and Technology, Xi'an 710021, China
Corresponding author: Li, X. (lixr@sust.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The hydrophobic enhanced biodegradable films of corn-starch, polyvinyl alcohol, epoxide-modifying polyamide (EPA), and alkyl ketene dimer (AKD) were prepared by solution casting. The dynamic contact angle and water absorption analysis show that the hydrophobility of the SP film is increased by the addition of AKD. When the content of AKD is 3.30%, the contact angle and water absorption rate of the film reaches 90° and 15.44%, respectively. EPA can improve the tensile strength obviously, while it is disadvantageous to the breaking elongation of the SP film when the content of EPA is exorbitant. X-ray diffraction indicates the compatibility between the film components is increased by the internal plasticizing effect of AKD and the crosslinking of EPA. Testing biodegradation activity shows that both St.aureus and E.coli have some biodegrading abilities on the SP films. However, the biodegradation ability of the SP films reduces with increasing of EPA content.
Number of references: 15
Main heading: Water absorption
Controlled terms: Alkylation - Amides - Amino acids - Biochemistry - Biodegradation - Contact angle - Crosslinking - Degradation - Dimers - Environmental Protection Agency - Hydrophobicity - Microbiology - Nylon polymers - Polymers - Starch - Water analysis - Water content
Uncontrolled terms: Alkyl ketene dimers - Biodegradable films - Breaking elongations - Dynamic contact angles - Epoxide-modifying polyamides - Hydrophobic films - Plasticizing effects - Solution castings - Sp films - X- ray diffractions
Classification code: 802.3 Chemical Operations - 804 Chemical Products Generally - 804.1 Organic Compounds - 802.2 Chemical Reactions - 815.1 Polymeric Materials - 822.3 Food Products - 931.2 Physical Properties of Gases, Liquids and Solids - 815.1.1 Organic Polymers - 801.2 Biochemistry - 445.2 Water Analysis - 454.2 Environmental Impact and Protection - 461 Bioengineering and Biology - 444 Water Resources - 461.8 Biotechnology - 631.1.1 Liquid Dynamics - 801 Chemistry - 461.9.2 Microbiology
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
30. Accession number: 20091512023267
Title: Design of a non-destructive detection system for eggs based on virtual instrument and neural network
Authors: Liu, Peng1 ; Tu, Kang1 ; Pan, Leiqing1
Author affiliation: 1 Food science and technology Institute, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author: Tu, K. (kangtu@njau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The system-integration degree, system working efficiency and user interface of egg non-destructive detection system cannot meet the requirement of fast and accurate detection. A non-destructive detection system for eggs based on virtual instrument and artificial neural network was designed and evaluated. This system used Lab Windows/CVI as the system design platform and the neural network as the core-analysis module. This approach fully uses the advantages of both computer vision and acoustics non-destructive detection. This system realizes the amalgamation of multi-sensors in data collecting and processing. Three kinds of tests were conducted--the system static grading test, the system dynamic grading test and the system continuous dynamic test. The test results indicate this system was easy to use and provided a good graphical user interface. The system has good veracity (system continuous dynamic test result above 90%) and low un-detecting rate at high speed of the gearing machine (27 samples/min).
Number of references: 15
Main heading: Neural networks
Controlled terms: Computer vision - Data processing - Digital instruments - Graphical user interfaces - Machinery - Metals - Sensors - Testing
Uncontrolled terms: Artificial neural networks - Continuous dynamics - Data collecting - Detection-system - Egg - High-speed - Lab Windows/CVI - Multi-sensors - Non-destructive detections - System designs - System dynamics - System integrations - Test results - Virtual instruments - Working efficiencies
Classification code: 732.2 Control Instrumentation - 741.2 Vision - 801 Chemistry - 731.6 Robot Applications - 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 - 723.5 Computer Applications - 423.2 Test Methods - 461.1 Biomedical Engineering - 531 Metallurgy and Metallography - 422.2 Test Methods - 601 Mechanical Design - 723.2 Data Processing and Image Processing - 723.4 Artificial Intelligence - 722.2 Computer Peripheral Equipment
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
31. Accession number: 20091512023270
Title: Experiment on soil evaporation of radish in sunlight greenhouse
Authors: Liu, Hao1, 2, 3 ; Sun, Jingsheng1, 2 ; Duan, Aiwang1, 2 ; Sun, Lei1 ; Liu, Zugui1, 2 ; Shen, Xiaojun1, 2
Author affiliation: 1 Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China
2 Key Lab for Crop Water Requirement and Regulation, Ministry of Agriculture, Xinxiang 453003, China
3 Graduate School, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Corresponding author: Duan, A. (duanaiwang@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Soil evaporation plays an important role in calculating water balance and energy balance in farmland. Soil evaporation in radish field in greenhouse was measured by Micro-lysimeter, the variation law of soil evaporation in radish field was studied, and the relationships between soil evaporation and meteorological factors, such as solar radiation, air temperature and relative humidity, were analyzed in this paper. The results showed that soil evaporation tended to decrease with days after radish sowing, accounted for 37.73%-41.71% of water consumption in the whole growth period, and there was a good exponential function relationship between soil evaporation and solar radiation, air temperature as well as relative humidity. Thus it has significant meaning to establish the optimum irrigation schedule of greenhouse radish.
Number of references: 15
Main heading: Evaporation
Controlled terms: Atmospheric humidity - Atmospheric temperature - Electromagnetic waves - Greenhouses - Moisture - Soils - Solar energy - Solar radiation - Sun - Vapors - Water supply
Uncontrolled terms: Air temperatures - Exponential functions - Growth periods - Irrigation schedules - Meteorological factors - Radish - Relative humidities - Sunlight greenhouse - Water balances - Water consumption
Classification code: 821.6 Farm Buildings and Other Structures - 804 Chemical Products Generally - 802.3 Chemical Operations - 801.4 Physical Chemistry - 711 Electromagnetic Waves - 657.2 Extraterrestrial Physics and Stellar Phenomena - 657.1 Solar Energy and Phenomena - 641.1 Thermodynamics - 615.2 Solar Power - 483.1 Soils and Soil Mechanics - 446.1 Water Supply Systems - 443.1 Atmospheric Properties - 402.1 Industrial and Agricultural Buildings
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
32. Accession number: 20091512023329
Title: Agronomic factors affecting yield and combustion quality of bioenergy plants
Authors: Huang, Mingli1 ; Han, Wenxuan1 ; Zhang, Fusuo1 ; Liu, Xuejun1
Author affiliation: 1 College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
Corresponding author: Zhang, F. (zhangfs@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: With the rapid development of economy, fossil fuels are becoming exhausted all over the world. Bioenergy plant cropping provides a promising approach for the mitigation of this energy crisis. However, bioenergy output is determined by the yield and combustion quality of bioenergy plants, which, in turn, are controlled by agronomic factors such as water, nutrient and harvest time. Related research on the factors affecting the production of bioenergy plants has seldom been systematically analyzed and reported in China. Based on the analyses of property, variety and combustion quality of bioenergy plants, and combined with recent related research results on bioenergy plants in China, this paper mainly discusses the effects of those agronomic affecting factors such as water, nutrient and harvest time on the yield and combustion quality, and the prospects for the exploration of bioenergy plants in China.
Number of references: 47
Main heading: Quality control
Controlled terms: Agronomy - Combustion - Energy policy - Fossil fuels - Harvesting - Nutrients - Quality assurance - Quality function deployment - Smoke - Thermochemistry - Total quality management
Uncontrolled terms: Affecting factors - Bioenergy - Bioenergy plants - Energy crisis - Harvest time - Plants - Rapid development - Research results - Yield
Classification code: 922.2 Mathematical Statistics - 801.3 Colloid Chemistry - 801.4 Physical Chemistry - 804 Chemical Products Generally - 821.2 Agricultural Chemicals - 821.3 Agricultural Methods - 822.3 Food Products - 912.2 Management - 913.3 Quality Assurance and Control - 641.1 Thermodynamics - 451.1 Air Pollution Sources - 454.3 Ecology and Ecosystems - 461.9 Biology - 525.6 Energy Policy - 521.1 Fuel Combustion - 523 Liquid Fuels - 524 Solid Fuels - 522 Gas Fuels
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
33. Accession number: 20091512023345
Title: Optimization of enzymatic hydrolysis preparation of water-soluble propolis
Authors: He, Xinyi1, 2 ; Fu, Shenghui3 ; Wang, Lei3
Author affiliation: 1 Department of Food Science, Tianjin Agricultural University, Tianjin 300384, China
2 Tianjin Agricultural Products Processing Scientific Innovation and Achievement Transform Base, Tianjin 300384, China
3 Shunde Ping Rong Food Development Corporation Limited, Foshan 528322, China
Corresponding author: He, X. (hedevid@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to improve propolis solubility, water-soluble propolis was prepared. The influences of the type of enzyme, reaction time, reaction temperature, pH value and the mass ratio of lipase to material on propolis solubility were studied according to orthogonal experiments of lipase hydrolysis based on the single factor experiments. Antioxidant activity of water-soluble propolis was determined by α, α-diphenyl-1-picryl-hydrazyl (DPPH) radical scavenging methods, using propolis ethanolic extracts and vitamin C as references. Results from orthogonal experiments indicated that the successive order of factors affecting the propolis enzymatic solution by lipase was mass ratio of lipase to material, reaction time, pH value and reaction temperature. The optimum lipase enzymatic conditions were obtained as follows: the ratio of added lipase 11%, the reaction time 2.25 h, pH value 5.5 and the reaction temperature
Number of references: 18
Main heading: Enzymatic hydrolysis
Controlled terms: Experiments - Lipases - Oxidation - Oxidation resistance - pH effects - Solubility - Ternary systems
Uncontrolled terms: Antioxidant activities - Dpph assays - Ethanolic extracts - Extraction rates - Flavonoid - Flavonoid contents - Mass ratios - Orthogonal experiments - pH values - Propolis - Radical scavenging - Reaction temperatures - Reaction time - Vitamin-C
Classification code: 804.1 Organic Compounds - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 801.2 Biochemistry - 901.3 Engineering Research - 801.1 Chemistry, General - 531.2 Metallography - 531.1 Metallurgy - 461.9 Biology - 539.1 Metals Corrosion
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
34. Accession number: 20091512023280
Title: Quantitative analysis of land use structure characteristics at county scale
Authors: Chen, Qichun1 ; Lv, Chengwen2 ; Li, Bicheng1 ; Quan, Bin3
Author affiliation: 1 Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
2 College of Territorial Resources and Tourism, Anhui Normal University, Wuhu 241000, China
3 Institute of Geo-spatial Information Science, Hunan University of Science and Technology, Xiangtan 411201, China
Corresponding author: Chen, Q. (qichunchenahnu2004@sina.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The purpose of this research was to quantitatively analyze land use structure characteristics at the county scale by selecting related quantitative indices combined with GIS technology, for understanding both quantitative and spatial structure of land use. The quantitative analysis was carried out by using the cadastre data in 2002 and the land use map of 1:50000 scales in
Number of references: 41
Main heading: Economics
Controlled terms: Geomorphology - Land use - Sulfur compounds
Uncontrolled terms: Agricultural lands - Anhui provinces - Arable lands - Cadastre datum - County scale - Demonstration analysis - Forest lands - Gis technologies - Lorenz curves - matrixes - Optimal combinations - Per units - Population densities - Positive correlations - Quantitative analysis - Quantitative indices - Quantitative methods - Quantitative structure - Spatial structure - Structure characteristics - Water areas
Classification code: 971 Social Sciences - 911.2 Industrial Economics - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 481.1.1 Geomorphology - 442.2 Land Reclamation - 403 Urban and Regional Planning and Development
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
35. Accession number: 20091512023257
Title: Design of single thread silk reeling test machine based on microcontroller
Authors: Li, Xiaozhen1 ; Zhang, Xiaohui1 ; Li, Jinyang1 ; Yan, Yinfa1 ; Zhu, Zhiwei1
Author affiliation: 1 College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai'an 271018, China
Corresponding author: Zhang, X. (zhangxh@sdau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to improve the level of silk research, enhance the reliability of test data, raise the test automation, and further dig out the silk value, the single thread silk reeling test machine was designed. The density-regulation-motor and the silk-cylinder-drive-motor were controlled by the microcontroller to work cooperatively. The inputting length of silk and winding density were changed into the corresponding pulse signals by the procedures, and the pulse signals were used to control the stepping motors. Two Hall sensors were used to attain the purpose of real-time control. The ballscrew was used as transmission mechanism, which enhanced the working stability of the test machine. The experiment shows that the extracted silk can meet the requirements of silk research by the test machine.
Number of references: 20
Main heading: Silk
Controlled terms: Digital to analog conversion - Hall effect devices - Machine design - Microcontrollers - Motors - Real time control - Sensors - Servomechanisms - Stepping motors - Testing - Winding
Uncontrolled terms: Ballscrew - Hall sensor - Pulse signals - Real-time controls - Test automations - Test datum - Test machines - Transmission mechanisms
Classification code: 723.2 Data Processing and Image Processing - 731 Automatic Control Principles and Applications - 732 Control Devices - 732.1 Control Equipment - 722 Computer Systems and Equipment - 732.2 Control Instrumentation - 816.1 Processing of Plastics and Other Polymers - 819.1 Natural Fibers - 819.3 Fiber Chemistry and Processing - 801 Chemistry - 714.2 Semiconductor Devices and Integrated Circuits - 423.2 Test Methods - 601 Mechanical Design - 632.2 Hydraulic Equipment and Machinery - 632.4 Pneumatic Equipment and Machinery - 422.2 Test Methods - 691.2 Materials Handling Methods - 705.3 Electric Motors - 708.4 Magnetic Materials - 714 Electronic Components and Tubes - 705 Electric Generators and Motors
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
36. Accession number: 20091512023304
Title: Favorable soil moisture and fertilization model for tobacco cultivation
Authors: Chen, Yiqiang1 ; Liu, Guoshun1 ; Xi, Hong'ang2 ; Zhang, Caixia1
Author affiliation: 1 National Tobacco Cultivation and Physiology and Biochemistry Research Center, Tobacco College, Henan Agricultural University, Zhengzhou 450002, China
2 Tobacco Company of Nanyang City, Nanyang 473000, China
Corresponding author: Liu, G.
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: This study was conducted to provide a quantitative fertilization model for producing high quality tobacco leaves and reducing environmental pollution and the quality decline of tobacco leaves resulted from over-fertilization. A mathematic model for the relations of tobacco output value with nitrogen, phosphorus, potassium and water factors was established by the potted experiment. The interaction among factors was analyzed, the model was optimized, and the contribution ratios of soil nitrogen, phosphorus, and potassium were calculated. Furthermore, a fertilization model was developed and tested in a field experiment. Results show that the optimum fertilization amounts of pure nitrogen, P2O5, K2O are 4.85
Number of references: 24
Main heading: Geologic models
Controlled terms: Experiments - Fertilizers - Groundwater - Moisture determination - Nitrogen - Permittivity - Phosphorus - Potassium - Soil moisture - Tobacco
Uncontrolled terms: Environmental pollutions - Fertilization model - Field experiments - High qualities - Mathematic models - Output values - Soil nitrogens - Tobacco leaves
Classification code: 944.2 Moisture Measurements - 901.3 Engineering Research - 821.4 Agricultural Products - 821.2 Agricultural Chemicals - 804 Chemical Products Generally - 708.1 Dielectric Materials - 701 Electricity and Magnetism - 549.1 Alkali Metals - 483.1 Soils and Soil Mechanics - 481.1 Geology - 444.2 Groundwater
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
37. Accession number: 20091512023253
Title: Experimental study on sowing seeds by air-stream metering mechanism
Authors: Li, Zhonghua1 ; Wang, Decheng1 ; Liu, Guilin2 ; Yang, Mingshao3 ; Wang, Zhenhua2
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Huhhot Branch of Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
3 College of Engineering, Inner Mongolia Agricultural University, Huhhot 010010, China
Corresponding author: Wang, D. (wangdecheng_cau@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to discuss the performance of the metering mechanism and its action on different seeds, seeds of Medicago sativa, Elymus dahuricus and corn were chosen as testing seeds for their typical plants in China. The experiments for sowing Medicago stiva seeds, Elymus dahuricus seeds and corn seeds were accomplished. It was found that the performance of the metering mechanism met the requirements. The results also indicated that the input air velocity and seed feeding rate had influenced and V observably. The correlation coefficient was about 0.97. Finally, through optimizing the experimental scheme, the optimal air velocity and input seeds velocity were obtained. The Elymus seed's air input velocity is 27~
Number of references: 16
Main heading: Seed
Controlled terms: Experiments - Velocity
Uncontrolled terms: Air velocities - Corn seeds - Correlation coefficients - Experimental schemes - Experimental studies - Feed rates - Feeding rates - Forage seeds - Input velocities - Maize seeds - Medicago - Metering mechanism - Optimal air velocities
Classification code: 821.4 Agricultural Products - 901.3 Engineering Research - 931.1 Mechanics
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
38. Accession number: 20091512023323
Title: Analysis of the influence factors of low-yield cropland in the Sanjiang Plain based on MOD
Authors: Guo, Zhixing1, 2, 3 ; Wang, Zongming4 ; Liu, Dianwei4 ; Song, Kaishan4 ; Song, Changchun4
Author affiliation: 1 State Key Laboratory of Earth Surface Processes and Resources Ecology, Beijing Normal University, Beijing 100875, China
2 Key Laboratory of Environmental Change and Natural Disaster, Beijing Normal University, Beijing 100875, China
3 Academy of Disaster Reduction and Emergency Management, Ministry of Civil Affairs and Ministry of Education, The People's Republic of China, Beijing 100875, China
4 Institute of Northeast Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China
Corresponding author: Wang, Z. (zongmingwang@neigae.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to improve the cropland productivity in Sanjiang Plain, the spatial distribution of the low-yield cropland in Sanjiang Plain and its influence factors were analyzed with the spatial analysis method based on the MOD
Number of references: 11
Main heading: Semiconductor materials
Controlled terms: Agriculture - Landforms - NASA - Rivers - Roads and streets - Size distribution - Strategic planning
Uncontrolled terms: Influence factors - Low-yield rate - Net primary production (NPP) - Sanjiang Plain - Spatial analysis
Classification code: 933.1 Crystalline Solids - 656 Space Flight - 712.1 Semiconducting
Materials - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 912.2 Management - 922.2 Mathematical Statistics - 931.2 Physical Properties of Gases, Liquids and Solids - 655 Spacecraft - 481.1 Geology - 444.1 Surface Water - 423 Non Mechanical Properties and Tests of Building Materials - 407.2 Waterways - 406.2 Roads and Streets - 531.2 Metallography
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
39. Accession number: 20091512023311
Title: Characteristics of cyclical variation for four-stroke small utility gasoline engine
Authors: Chen, Hanyu1 ; Yuan, Yinnan1 ; Fang, Baocheng2
Author affiliation: 1 School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
2 Chang Feng Group Co. Ltd, Changsha 410000, China
Corresponding author: Chen, H. (losttheway@sina.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: According to the measured pressure data of the four-stroke small utility gasoline engine, the cyclical variations of the maximum pressure, the crank shaft angle at the maximum pressure, the mean indicated pressure and the largest pressure rise rate were analyzed. Meanwhile, the influences of ignition advance angle, load and rotation speed on cyclical variation were also investigated. The test results show that the coefficient of cyclical variation, at the lower rotation speed and lower load, is larger than that at the full load and rated speed. Moreover, the combustion stability of the engine can be improved when the ignition advance angle is increased properly.
Number of references: 15
Main heading: Engines
Controlled terms: Gasoline - Ignition - Rotation - Smoke - Thermochemistry
Uncontrolled terms: Combustion stabilities - Crank shafts - Cyclical variation - Full loads - Ignition advance angles - Maximum pressures - Mean indicated pressures - Pressure datum - Pressure rise - Rotation speed - Small utility gasoline engine - Test results
Classification code: 804 Chemical Products Generally - 801.4 Physical Chemistry - 801.3 Colloid Chemistry - 654.2 Rocket Engines - 641.1 Thermodynamics - 931.1 Mechanics - 617.3 Steam Engines - 601.1 Mechanical Devices - 523 Liquid Fuels - 521.1 Fuel Combustion - 451.1 Air Pollution Sources - 612 Engines
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
40. Accession number: 20091512023338
Title: BP neural network prediction of the effects of drying rate of fruits and vegetables pretreated by high-pulsed electric field
Authors: Liu, Zhenyu1 ; Guo, Yuming1
Author affiliation: 1 College of Engineering and Technology, Shanxi Agricultural University, Taigu 030801, China
Corresponding author: Guo, Y. (guoyuming99@sina.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The pretreatment of fruits and vegetables by high-pulsed electric field (HPEF) can increase the drying rate, improve the quality of dried product and reduce energy consumption. Through the HPEF pretreatment drying test of radishes and apples, the effects of pretreatment factors, such as pulse intensity, action time and pulse number on drying rate, were investigated. This paper analyzed the relationship between HPEF parameters and drying rate at different periods based on BP neural network of L-M training method, thus established the causation between them. The results show that the effect of pulse intensity on drying rate is more significant than the effects of action time and pulse number. The simulation model of BP neural network for pretreatment drying of radishes and apples was built and compared with the measured values. The drying rate predicted by the BP neural network is close to the measured values, so BP neural network can be used to estimate the result.
Number of references: 15
Main heading: Neural networks
Controlled terms: Curing - Dewatering - Drying - Electric field effects - Electric field measurement - Fruits
Uncontrolled terms: BP neural network - Dried products - Drying rate - Drying tests - Effect of pulse - Energy consumption - High-pulsed electric field - Pretreatment - Pulse intensities - Pulse numbers - Simulation models - Training methods
Classification code: 821.4 Agricultural Products - 818.3 Rubber and Elastomer Processing - 815.1 Polymeric Materials - 802.3 Chemical Operations - 942.2 Electric Variables Measurements - 802.2 Chemical Reactions - 701.1 Electricity: Basic Concepts and Phenomena - 642.1 Process Heating - 461.1 Biomedical Engineering - 723.4 Artificial Intelligence
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
41. Accession number: 20091512023336
Title: Changes of comparative advantages of regional grain production in China
Authors: Xin, Liangjie1, 2 ; Li, Xiubin1 ; Tan, Minghong1
Author affiliation: 1 Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China
2 Graduate University, Chinese Academy of Sciences, Beijing 100049, China
Corresponding author: Xin, L. (xinlj.05b@igsnrr.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Based on the panel data of provincial grain production in China from 1994 to 2005, the trend of Chinese provincial grain structure variation was analyzed using the index of regional grain production advantage. The study found that Chinese provincial grain production showed a centralized trend on the province level. The indexes of regional grain production advantage of the developed provinces, such as Beijing, Shanghai, Tianjin and Zhejiang, decrease seriously, in contrast with the great rises in Liaoning and Jilin provinces. From regional perspectives, the gravity centers of grain production in China are transferring from the east to the central and northeast China. The driving forces of the variations can be attributed to three factors: benefits from grain plantation, household land scale, opportunity cost of agricultural labor. Although grain returns in eastern China are higher than that of other regions, smaller scale, higher opportunity cost and benefit of industrial crops bring negative influences to grain plantation of eastern China. Thus, it is necessary that grain production in eastern China decreases progressively.
Number of references: 24
Main heading: Grain (agricultural product)
Controlled terms: Crops - Forestry - Planning - Regional planning
Uncontrolled terms: Driving factors - Driving forces - Eastern chinas - Grain production - Grain structures - Gravity centers - Industrial crops - Jilin provinces - Negative influences - Northeast chinas - Opportunity costs - Panel datum - Regional comparative advantages - Tianjin - Zhejiang
Classification code: 403 Urban and Regional Planning and Development - 403.2 Regional Planning and Development - 821.0 Woodlands and Forestry - 821.4 Agricultural Products - 912.2 Management
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
42. Accession number: 20091512023246
Title: Effects of different tillage managements on production and yield of winter wheat in dryland
Authors: Huang, Ming1 ; Wu, Jinzhi1 ; Li, Youjun1 ; Yao, Yuqing2 ; Zhang, Canjun2 ; Cai, Dianxiong3 ; Jin, Ke3
Author affiliation: 1 Agricultural College, Henan University of Science and Technology, Luoyang 471003, China
2 Luoyang Insititute of Agricultural Science, Luoyang 471022, China
3 Chinese Academy of Agricultural Sciences, Beijing 100081, China
Corresponding author: Li, Y. (kdlyj@sina.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to select the feasible tillage technology in dry farming areas, the experiment was carried out to study the effects of different tillage managements on production and yield of winter wheat under dry farming field conditions. There were four tillage managements including once deep ploughing tillage, no tillage, subsoiling tillage and conventional tillage. The results showed that with no tillage and subsoiling tillage, form
Number of references: 20
Main heading: Agricultural machinery
Controlled terms: Biomass - Chlorophyll - Forestry - Grain (agricultural product) - Photosynthesis - Porphyrins - Soil moisture - Underwater soils - Water content
Uncontrolled terms: Biomass productions - Chlorophyll contents - Conventional tillages - Dry farmings - Dryland - Field conditions - Filling rates - Filling stages - Flowering stages - Grain yield - Growing periods - Growth and development - Net photosynthesis rates - No tillages - Physiological functions - Soil layers - Soil water contents - Tillage management - Winter wheat
Classification code: 821.5 Agricultural Wastes - 821.4 Agricultural Products - 821.1 Agricultural Machinery and Equipment - 821.0 Woodlands and Forestry - 805.1.1 Biochemical Engineering - 804.1 Organic Compounds - 802.2 Chemical Reactions - 801.2 Biochemistry - 741.1 Light/Optics - 525.1 Energy Resources and Renewable Energy Issues - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 444 Water Resources
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
43. Accession number: 20091512023314
Title: Design and experiment of corn straw briquette stove
Authors: Liu, Shengyong1 ; Zhang, Fei1 ; Liu, Xiao'er2 ; Chen, Fangfang3 ; Yang, Guofeng1 ; Bai, Bing1
Author affiliation: 1 Key Laboratory of Renewable Energy, Henan Agricultural University, Zhengzhou 450002, China
2 The No.1 Geological Exploration Institute of Henan Province, Nanyang 473000, China
3 Biocentury Transgene Co. Ltd, Zhengzhou 450001, China
Corresponding author: Liu, S. (liushy@vip.sina.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to solve the problem of increasingly rigorous energy and straw burning in rural areas, corn straw briquette stove was designed, according to the main cooking habits of the current rural life and the specialty of corn straw briquette. By testing the thermal performance, the results indicate that the stove can meet the national standards. The combustion of the corn straw briquette stove is stable, clean and efficient, which will improve the utilization of corn straw. It is of great significance to resolve burning corn stalk and improve cooking conditions for domestic cooking.
Number of references: 16
Main heading: Stoves
Controlled terms: Briquets - Briquetting - Experiments - Rural areas
Uncontrolled terms: Briquette fuels - Cooking conditions - Cooking habits - Corn stalks - Corn straw - National standards - Rural lives - Thermal performance
Classification code: 901.3 Engineering Research - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 802.3 Chemical Operations - 901.4 Impact of Technology on Society - 643.2 Space Heating Equipment and Components - 524 Solid Fuels - 403.2 Regional Planning and Development - 642.2 Industrial Furnaces and Components
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
44. Accession number: 20091512023334
Title: Evaluation on multi-suitability of cultivated land based on GIS and niche-fitness model
Authors: Fu, Qing1, 3 ; Zhao, Xiaomin1, 2, 3 ; Le, Lihong1, 3 ; Guo, Xi1, 3
Author affiliation: 1 Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang 330045, China
2 Nanchang Teachers College of Jiangxi Province, Nanchang 330045, China
3 Jiangxi Province and Key Laboratory of Physiology, Ecology and Cultivation of Double Cropping Rice, Ministry of Agriculture, Nanchang 330045, China
Corresponding author: Zhao, X. (zhxm889@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The cultivated land in Poyang Lake region and its surrounding area of Jiangxi province was selected for multi-suitability evaluation by introducing the niche-fitness theory and Kriging method. The means of weighted average and limiting factor models were adopted to quantitative analyze niche-fitness and restrictive factors for rice, rape, cotton and sweet potato. The result shows that the niche-fitness value in the area is higher in general with the peak value reaching 0.9824, and habitat conditions in the region can basically meet the requirements of the crops; The farmlands of rice, rape and cotton are mainly in grade 1 and 2, which account for the area of 67%. Sweet potatoes which are grade 1 and 2 account for 56.9%. In terms of niche-fitness evaluation, area of rice ranks first with the ratio amounting to 56.1%, cotton comes the next; Total phosphorus, OM, and thickness of cultivated layer are the primary niche factors which restrict land productive potential in the area. The results provided direct application in supervision of agricultural production, and promoted reasonable utilization and scientific management of farmland.
Number of references: 18
Main heading: Ecology
Controlled terms: Agriculture - Cotton - Geographic information systems - Geologic models - Health - Phosphorus - Resource valuation - Soils
Uncontrolled terms: Agricultural productions - Cultivated lands - Fitness evaluations - Fitness values - GIS - Habitat conditions - Jiangxi provinces - Kriging methods - Limiting factors - Multi-suitability - Niche-fitness models - Peak values - Poyang lakes - Scientific managements - Soil resource valuation - Suitability evaluations - Sweet potatoes - Total phosphorus - Weighted averages
Classification code: 914.3 Industrial Hygiene - 903.3 Information Retrieval and Use - 821.4 Agricultural Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 819.1 Natural Fibers - 804 Chemical Products Generally - 723.3 Database Systems - 512 Petroleum and Related Deposits - 501.1 Exploration and Prospecting Methods - 483.1 Soils and Soil Mechanics - 481.1 Geology - 461.6 Medicine and Pharmacology - 454.3 Ecology and Ecosystems
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
45. Accession number: 20091512023335
Title: Determining conversion direction of rural residential land consolidation in Beijing mountainous areas
Authors: Jiang, Guanghui1 ; Zhang, Fengrong2 ; Kong, Xiangbin2
Author affiliation: 1 College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China
2 Department of Land Resources Management, China Agricultural University, Beijing 100193, China
Corresponding author: Zhang, F.
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Different land use changes will lead to different environmental effects, so that how to choose the proper conversion direction of rural residential land scientifically is an important basic issue to be settled urgently for rural residential land consolidation both in practice and in theory. This issue was discussed by comparison study using the methods of landscape indexes on six land use change scenarios simulated by CA-Markov model, which represented six types of rural residential land conversion direction. As a result, it indicated that landscape effect was not so perfect when rural residential land was converted to the cultivated land or garden plots which took place often in practice at least in Beijing mountainous areas, but if it was converted according to the result of suitability evaluation or the condition of landscape matrices surrounded, a better result could be obtained. Therefore, the common deed should be appraised prudently and carefully before the practice of the rural residential land consolidation concerning the land conversion direction.
Number of references: 24
Main heading: Land use
Controlled terms: Environmental engineering - Markov processes
Uncontrolled terms: CA-Markov model - Comparison studies - Cultivated lands - Environmental effect - Land conversions - Land use changes - Mountainous areas - Rural residential land consolidation - Scenario simulation - Suitability evaluations
Classification code: 403 Urban and Regional Planning and Development - 442.2 Land Reclamation - 454 Environmental Engineering - 922.1 Probability Theory
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
46. Accession number: 20091512023319
Title: Winter wheat yield estimating based on 3S integration and field measurement
Authors: Yang, Wude1 ; Song, Yantun1 ; Song, Xiaoyan1 ; Ding, Guangwei2
Author affiliation: 1 College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
2 Department of Chemistry, Northern State University, Aberdeen, SD 57401, United States
Corresponding author: Yang, W. (sxauywd@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Integration technology of GIS, RS and GPS were used to estimate yield of winter wheat in Yuncheng of Shanxi. The results showed that the last ten days of March were the optimum time for area estimation of winter wheat. The first and second ten days of April were the best period for estimating yield. It was more effective for information of winter wheat area extraction with TM data and information of green level extraction with AVHRR. According to the amount of NDVI, winter wheat was divided into 3 types and each type of wheat had significant different yield in different region. After analyzing the features of physical geography and key data of meteorology, a synthesis model was established based on the main factors of NDVI, temperature, and humidity.
Number of references: 15
Main heading: Grain (agricultural product)
Controlled terms: Global positioning system - Information systems - Meteorology - Remote sensing
Uncontrolled terms: Area estimations - Data and informations - Field measurements - Geographical information system - Integration technologies - Synthesis models - Winter wheat - Yield estimating
Classification code: 903.3 Information Retrieval and Use - 903.2 Information Dissemination - 821.4 Agricultural Products - 943.3 Special Purpose Instruments - 731.1 Control Systems - 655.2.1 Communication Satellites - 443 Meteorology - 716.3 Radio Systems and Equipment
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
47. Accession number: 20091512023341
Title: Modeling for the thermal parameters of freshwater fish muscles during low temperature phase transition
Authors: Liu, Ru1, 2 ; Lu, Changxin1, 2 ; Xiong, Shanbai1, 2 ; Zhao, Siming1, 2 ; Gong, Ting1, 2
Author affiliation: 1 College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
2 Aquatic Product Engineering and Technology Research Center of Hubei Province, Wuhan 430070, China
Corresponding author: Xiong, S. (xiongsb@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
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The freezing point, apparent specific heat and enthalpy of back and belly muscles from silver carp, bighead carp, common carp and grass carp during low temperature phase transition range (-40~
Number of references: 18
Main heading: Differential scanning calorimetry
Controlled terms: Calorimeters - Enthalpy - Fish - Freezing - Laser interferometry - Low temperature properties - Meats - Muscle - Predictive control systems - Quality assurance - Quality control - Quality function deployment - Scanning - Silver - Specific heat - Thermoanalysis - Thermodynamics - Total quality management - Water content
Uncontrolled terms: Bighead carps - Common carps - Equipment designs - Fat contents - Freezing points - Freshwater fish - Grass carps - Low temperature phase transitions - Predictive models - Protein contents - Silver carps - Soluble solid contents - Theoretical foundations - Thermal parameters
Classification code: 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 822 Food Technology - 822.2 Food Processing Operations - 822.3 Food Products - 912.2 Management - 802.3 Chemical Operations - 913.3 Quality Assurance and Control - 931.2 Physical Properties of Gases, Liquids and Solids - 941.4 Optical Variables Measurements - 944.5 Temperature Measuring Instruments - 944.6 Temperature Measurements - 922.2 Mathematical Statistics - 801 Chemistry - 461 Bioengineering and Biology - 461.2 Biological Materials and Tissue Engineering - 461.3 Biomechanics, Bionics and Biomimetics - 471 Marine Science and Oceanography - 547.1 Precious Metals - 444 Water Resources - 641.1 Thermodynamics - 731.1 Control Systems - 741.3 Optical Devices and Systems - 743.2 Holographic Applications - 744.9 Laser Applications - 644.1 Refrigeration Methods
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
48. Accession number: 20091512023337
Title: Case study of mountainous landscape planning for metropolitan outskirts
Authors: Shao, Jing'an1
Author affiliation: 1 College of Geography Science, Chongqing Normal University, Chongqing 400047, China
Corresponding author: Shao, J. (shaoja@lreis.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The objectives of this paper were to coordinate the relationship of utilization and protection between urban and rural areas, and landscape and development, and to provide a good balance short cut, when the local community inhabitants determine how to choose industry behavior and protect landscape effects. Those above-mentioned aims are to be dominated by the characteristics of mountainous landscape planning in the outskirts of metropolitan, such as complex relief, special location, and demand transformation. Based on the concept of landscape coordination, basic data obtained from land use maps, TM images, topographic maps, participatory rural appraisal and field survey, were applied to design the best future landscape scenarios that carry out the coupling between landscape mosaic elements and human well-being in mountainous areas. The results show that: the future landscape scenarios emphasize the resource constraints and guide to the economic development in study site. It is in line with the past evolution of landscape patterns, and the demand for the adjustment of landscape patterns, which is suitable for the changing posture of population, rural economy, urban economy and landscape behavior. The quality adjustments of landscape scenarios focus on the connotation potential of land resources. And the relationships between the expansion of urban resident land and the reduction of rural resident land were established. The past expansion modes that were at the expense of agricultural land, in particular cultivated land, were the way from happening again. Moreover, the scales of cultivated land used as orchard land and forest land increased timely. The landscape effects of unused land are also sustained. The spatial distribution of landscape scenarios adopted the coordinating principle of subareas, in accordance with the conditions of micro-plots site. Wide valley, gentle slope or low mountains where the situations of landscape were better are oriented to the protection and natural recovery of landscape effects. Mild or heavy interference areas where the situations of landscape are sub-heathy should reconstruct the landscape pattern with the preferential protection. However, steep slope or bare soil (rock) areas where the measures of landscape effects resort to non-development is the best policy for development. The mountainous landscape planning for metropolitan outskirts must identify the evolution of the past landscape patterns to achieve the coordination among conflicts from the different interest individuals. The coordination relationship among industrial activities, landscape accessibility and ecological protection was considered as the entry point. It meets with the strategic needs of the metropolitan outskirts, which are developed into the coupling mosaic open space with the coordination between the industrial activities and landscape behavior. Under the coordination of urban and rural patterns, the research results are helpful to enrich people's awareness and understanding of the relations of industry-landscape in the metropolitan outskirts, and the multi-perspective identification is also obtained for mountainous landscape planning.
Number of references: 15
Main heading: Economics
Controlled terms: Coordination reactions - Forestry - Land use - Landforms - Maps - Planning - Regional planning - Rural areas - Size distribution - Slope protection
Uncontrolled terms: Agricultural lands - Bare soils - Cultivated lands - Ecological protections - Economic development - Elements of landscape mosaics - Entry points - Expansion modes - Field surveys - Forest lands - In lines - Industrial activities - Land resources - Land use maps - Landscape patterns - Local communities - Measures of landscape arrangements - Metropolitan outskirts - Mountainous areas - Mountainous landscape planning - Multi perspectives - Natural recoveries - Open spaces - Participatory rural appraisals - Quality adjustments - Research results - Resource constraints - Rural economies - Rural residents - Spatial distributions - Steep slopes - Study sites - Sub-areas - Tm images - Topographic maps - Urban and rural areas - Urban economies
Classification code: 821.0 Woodlands and Forestry - 901.4 Impact of Technology on Society - 902.1 Engineering Graphics - 911.2 Industrial Economics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 912.2 Management - 931.2 Physical Properties of Gases, Liquids and Solids - 933.1 Crystalline Solids - 971 Social Sciences - 922.2 Mathematical Statistics - 802.2 Chemical Reactions - 403.2 Regional Planning and Development - 405.3 Surveying - 407.1 Maritime Structures - 423 Non Mechanical Properties and Tests of Building Materials - 403 Urban and Regional Planning and Development - 441.1 Dams - 481.1 Geology - 483.1 Soils and Soil Mechanics - 531.2 Metallography - 442.2 Land Reclamation
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
49. Accession number: 20091512023301
Title: Change of water productivity of wheat at different scales in oasis irrigation districts
Authors: Hu, Guanglu1, 2 ; Zhao, Wenzhi1
Author affiliation: 1 Linze Inland River Basin Comprehensive Research Station Chinese Ecosystem Research Network, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
2 Gansu Provincial School of Water Resources and Hydropower, Lanzhou 730021, China
Corresponding author: Zhao, W. (zhaowzhi@lzb.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Water productivity is an integrated index that evaluated agriculture production level and scientific and rationality of agricultural water. According to the data of meteorological, irrigation water use, irrigation area and crop yields of Hongshuihe irrigation districts from 1995 to
Number of references: 16
Main heading: Irrigation canals
Controlled terms: Farms - Grain (agricultural product) - Hydraulic structures - Irrigation - Productivity - Water analysis - Water conservation - Water supply
Uncontrolled terms: Oasis irrigation districts - Scaling analysis - Water productivity - Water saving project - Wheat
Classification code: 913.1 Production Engineering - 821.4 Agricultural Products - 821.3 Agricultural Methods - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 801 Chemistry - 611 Hydroelectric and Tidal Power Plants - 446.2 Related Hydraulic Structures - 446.1 Water Supply Systems - 445.2 Water Analysis - 444 Water Resources - 441 Dams and Reservoirs; Hydro Development - 407.2 Waterways - 403.1 Urban Planning and Development
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
50. Accession number: 20091512023255
Title: Effects of broadcast sowing and precision drilling of super rice seed on seedling quality and effectiveness of mechanized transplanting
Authors: Xu, Yicheng1 ; Zhu, Defeng1 ; Zhao, Yun2 ; Chen, Huizhe1
Author affiliation: 1 State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
2 College of Machinery and Automatic Control, Zhejiang Sci-Tech University, Hangzhou 310018, China
Corresponding author: Chen, H. (chenhuizhe@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: According to the agronomic requirements for transplanting technology for the super hybrid rice, reducing seeding rate and cultivating strong seedlings and realizing fewer seedling and bigger space planting are the key to increase yield potential in mechanized transplanting of hybrid rice. In this paper, rice seedling quality and effectiveness of mechanized transplanting of precision seed drilling and sowing were studied with super hybrid rice Liangyoupeijiu. The results showed that precision seed drilling had more uniform seed distribution, better seedling mat-formed effect and seedling quality in comparison with seed broadcasting. Precision seed drilling could reduce the rate of no-seedling in hill and the rate of injured-seedling, and improve the uniformity of seedling. The percent of one and two seedling in hill after mechanized transplanting was increased. Research shows that precision seed drilling can effectively reduce the rate of no seedling in hill and improve seedling quality and mechanized transplanting quality.
Number of references: 20
Main heading: Forestry
Controlled terms: Drilling - Grain (agricultural product) - Seed
Uncontrolled terms: Liangyoupeijiu - Mechanized transplanting - Rate of no seedling in hill - Rice - Rice seedlings - Seeding rates - Seedling qualities - Super-rice seeds - Yield potentials
Classification code: 604.2 Machining Operations - 821.0 Woodlands and Forestry - 821.4 Agricultural Products
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
51. Accession number: 20091512023305
Title: Plant root system distribution and its effect on soil nutrient on slope land converted from farmland in the Loess Plateau
Authors: Han, Fengpeng1, 2, 4 ; Zheng, Jiyong1, 3, 4 ; Zhang, Xingchang1, 3, 4
Author affiliation: 1 State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, China
2 Graduate School of Chinese Academy of Sciences, Beijing 100039, China
3 College of Resources and Environment, Northwest Sci-tech University of Agriculture and Forestry, Yangling 712100, China
4 Northwest Sci-tech University of Agriculture and Forestry, Yangling 712100, China
Corresponding author: Zhang, X. (zhangxc@ms.iswc.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to understand the root system distribution of Stipa bungeana in the soil profile and its influence on soil nutrients, two slopes were studied. One is a slope with 30 years growth of Stipa bungeana and the other is a bare slope land. They are all located in Shenmu experiment station of the Loess Plateau. The soil nutrients and root distribution in the soil profile were studied using picture management software and general analysis method. The results show that the root of Stipa bungeana mainly distributed in the soil profile of 0
Number of references: 15
Main heading: Soils
Controlled terms: Ammonium compounds - Biogeochemistry - Biological materials - Erosion - Farms - Nitrogen - Nutrients - Organic compounds - Phosphorus - Soil pollution
Uncontrolled terms: Ammonium nitrogens - Analysis methods - Exponential functions - Linear functions - Loess plateaux - Management softwares - Nitrate nitrogens - Organic matters - Plant root systems - Plant roots - Power functions - Root length densities - Root systems - Slope land converted from farmland root distribution - Soil erosion - Soil nutrients - Soil profiles - Soil surfaces - Total nitrogens - Total phosphorus
Classification code: 539.1 Metals Corrosion - 801.2 Biochemistry - 804 Chemical Products Generally - 822.3 Food Products - 804.1 Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.2 Agricultural Chemicals - 804.2 Inorganic Compounds - 483.1 Soils and Soil Mechanics - 483 Soil Mechanics and Foundations - 407 Maritime and Port Structures; Rivers and Other Waterways - 454.2 Environmental Impact and Protection - 454.3 Ecology and Ecosystems - 461.2 Biological Materials and Tissue Engineering - 461.9 Biology - 481.2 Geochemistry
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
52. Accession number: 20091512023297
Title: Effects of operating pressure on the discharge characteristics of porous pipes as micro-irrigation laterals
Authors: Liang, Haijun1 ; Liu, Zuoxin2 ; Shu, Qiaosheng2 ; Yin, Guanghua2
Author affiliation: 1 College of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
2 Key Laboratory of Liaoning Water Saving Agriculture, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
Corresponding author: Liu, Z. (liuzuoxin@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: A laboratory study was conducted to investigate the effect of operating pressure on the discharge characteristics of porous pipe as micro-irrigation laterals with different specifications. Experimental results showed that emission rates for both pipes decreased drastically during the initial test stage. Exponential relationship between emission rate and operating pressure was observed within the testing pressure range of 0~70 kPa. Minimum emission rate variation coefficients were reached for both pipes within the operating pressure range of 50~60 kPa. It can be concluded that operating pressure has significant effects on emission rate and emission uniformity of porous pipe. In general, the larger diameter pipe shows better discharge characteristics than the smaller one.
Number of references: 13
Main heading: Pipe
Controlled terms: Irrigation - Particulate emissions - Pressure effects
Uncontrolled terms: Discharge characteristics - Emission rates - Emission uniformity - Laboratory studies - Micro-irrigation - Operating pressures - Porous pipe - Pressure ranges
Classification code: 451.1 Air Pollution Sources - 619.1 Pipe, Piping and Pipelines - 821.3 Agricultural Methods - 931.1 Mechanics
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
53. Accession number: 20091512023331
Title: Pyrolysis characteristics and kinetic analysis of walnut shell
Authors: Qu, Wenwen1, 2 ; Xia, Hongying1 ; Peng, Jinhui1 ; Zhang, Libo1 ; Zhang, Zhengyong1 ; Yang, Kunbin1
Author affiliation: 1 Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China
2 Faculty of Science, Kunming University of Science and Technology, Kunming 650093, China
Corresponding author: Peng, J. (jhpeng@kmust.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The pyrolysis of walnut shell was carried out by means of the thermogravimetric method in high pure N2 atmosphere. The influences of different heating rates (5, 10, 20 and 40 K/min) on the pyrolysis process were investigated and the pyrolysis mechanism was discussed. The results show that the non-isothermal pyrolysis process of walnut shell includes three distinct stages: dehydration, fast-pyrolysis and residue slow decomposition. The second stage in which a huge amount of released volatile components caused the distinct weight loss of walnut shell played a main role in the whole process. With the increase of heating rate, the maximum decomposition rate and its corresponding temperatures of walnut shell increase. The TG curve and the peaks in DTG curve shift to higher temperatures due to the aggravating thermal lag. The pyrolysis processes are well described by the models of Jander equation and valid for diffusion control. The activation energies range from 102.28 to 117.73 kJ/mol and the pre-exponential factors vary from 4.13 × 106 to 2.42 × 108 min-1 at different heating rates.
Number of references: 29
Main heading: Pyrolysis
Controlled terms: Activation energy - Heating - Heating rate - Metal cladding - Reaction kinetics - Shells (structures) - Thermogravimetric analysis
Uncontrolled terms: Decomposition rates - Diffusion controls - Higher temperatures - Jander equations - Kinetic analysis - Non isothermals - Pre-exponential factors - Pyrolysis mechanisms - Pyrolysis process - Reaction mechanism - Tg curves - Thermal lags - Thermogravimetric methods - Volatile components - Walnut shell - Weight loss - Whole process
Classification code: 802.2 Chemical Reactions - 801.4 Physical Chemistry - 801 Chemistry - 643.1 Space Heating - 931.3 Atomic and Molecular Physics - 642.1 Process Heating - 538.2 Welding - 535.1 Metal Rolling - 408.2 Structural Members and Shapes - 641.2 Heat Transfer
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
54. Accession number: 20091512023326
Title: Nitrate removal and kinetic model of saline water by sulfur-based autotrophic denitrification
Authors: Ruan, Yunjie1 ; Tan, Hongxin1 ; Luo, Guozhi1 ; Wang, Chenyao1 ; Che, Xuan1 ; Sun, Dachuan1
Author affiliation: 1 College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
Corresponding author: Tan, H. (hxtan@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The investigation of nitrate removal in recirculating aquaculture system as a purpose, autotrophic denitrification of nitrate removal and kinetic characteristics for saline synthetic wastewater were carried out in a sulfur packed-bed reactor. The experimental results show that nitrate is effectively removed when the influent NO3--N concentration is in the range of 22.5~368 mg/L. The optimal influent loading rate in order to ensure that the removal efficiency of nitrate was higher than 95% and nitrite accumulation occurred in effluent below 1 mg/L was in the range of 0.052~
Number of references: 27
Main heading: Nitrogen removal
Controlled terms: Agriculture - Analysis of variance (ANOVA) - Aquaculture - Denitrification - Dewatering - Effluents - Kinetic theory - Nitrates - Nitration - Packed beds - Rate constants - Saline water - Sulfur - Wastewater - Wastewater treatment
Uncontrolled terms: ANOVA analysis - F values - Kinetic characteristics - Kinetic model - Loading rates - N removals - Nitrate removals - Nitrates removal - Nitrite accumulations - Order reactions - Packed-bed reactors - Per units - Predictive values - Re-circulating aquaculture systems - Reactor - Reactor volumes - Removal efficiencies - Removal rates - Synthetic wastewaters - Water temperatures
Classification code: 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 922 Statistical Methods - 931.1 Mechanics - 802.2 Chemical Reactions - 444 Water Resources - 452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 471.5 Sea as Source of Minerals and Food - 513.1 Petroleum Refining, General - 801.4 Physical Chemistry - 802.1 Chemical Plants and Equipment
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
55. Accession number: 20091512023347
Title: Effects of different packaging thickness on carbon dioxide injury to pears (Pyrus bretschneideri Rehd C.V.changba) during shelf life
Authors: Li, Fujun1 ; Zhang, Xinhua1 ; Sun, Xisheng2 ; Liu, Luqiang3
Author affiliation: 1 School of Agriculture and Light Industry Engineering, Shandong University of Technology, Zibo 255049, China
2 Rohm and Haas China Company, Beijing 100016, China
3 Canzhuang Fruit Technology Service Station, Zhaoyuan 265402, China
Corresponding author: Li, F. (lifujun@sdut.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In this experiment, pear (Pyrus bretschneideri Rehd C.V.changba) fruits stored at
Number of references: 15
Main heading: Fruits
Controlled terms: Carbon dioxide - Carbon monoxide - Image storage tubes - Packaging materials
Uncontrolled terms: 1-MCP - 1-methylcyclopropene - After treatments - Browning indices - Concentration of - Decay indices - Packaging films - Pear - Polyphenol contents - Shelf lives - Storage
Classification code: 644.2 Refrigerants - 694.2 Packaging Materials - 714.1 Electron Tubes - 804.2 Inorganic Compounds - 821.4 Agricultural Products
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
56. Accession number: 20091512023351
Title: Foreign dielectric property measurement techniques and their applications in agricultural products and food materials
Authors: Guo, Wenchuan1 ; Zhu, Xinhua1
Author affiliation: 1 College of Mechanical and Electronic Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author: Guo, W. (guowenchuan69@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The knowledge of dielectric properties of agricultural products and food materials is important in developing and designing microwave equipment and composition identification instruments. In order to provide references for domestic research in this field, the measurement techniques on dielectric properties (parallel plate, coaxial probe, transmission line, free space and resonant cavity) used overseas at present in agro-products and food materials were introduced, and the measurement system, characteristics as well as applicability of each technique were summarized. The research progress of each technology in studying dielectric properties of agro-products and foods were reviewed. Moreover, problems existing in domestic research in this fields and development trend in the future in China were discussed.
Number of references: 44
Main heading: Permittivity
Controlled terms: Agricultural products - Ceramic capacitors - Dielectric materials - Space probes
Uncontrolled terms: Agro-products - Coaxial probes - Development trends - Domestic researches - Food materials - Foods - Free spaces - Measurement systems - Measurement techniques - Parallel plates - Property measurements - Research progress - Resonant cavities - Transmission lines
Classification code: 655.3 Space Probes - 701 Electricity and Magnetism - 704.1 Electric Components - 708.1 Dielectric Materials - 812.1 Ceramics - 821.4 Agricultural Products
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
57. Accession number: 20091512023315
Title: Development of bait motion bionics feeding equipment of Rana chensinensis
Authors: Shi, Xiaomin1 ; Zhang, Yanchun1 ; Ji, Qingshan1 ; Shi, Ge2
Author affiliation: 1 School of Electrical and Mechanical Engineering, Zhejiang Ocean University, Zhoushan 316004, China
2 School of Marine Science, Zhejiang Ocean University, Zhoushan 316004, China
Corresponding author: Shi, X. (sxm70@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The bait simulating tempting feeding equipment was designed for factory breeding of rana chensinensis, which were to decrease its cost and risk and improve breeding environment. According to pre-arranged plannings and preparatory experiment, three axial cam driving of distinct phases was determined to be the best project. According to the best project, model machine was designed and made, and feeding experiments were carried out. The equipment only covers an area of
Number of references: 13
Main heading: Feeding
Controlled terms: Bionics - Biophysics - Cams - Equipment
Uncontrolled terms: Cam mechanisms - Feeding equipments - Feeding experiments - Low costs - Maximal rates - Model machines - Motion bionics - Rana chensinensis
Classification code: 901 Engineering Profession - 731.1 Control Systems - 701 Electricity and Magnetism - 931 Classical Physics; Quantum Theory; Relativity - 691.2 Materials Handling Methods - 461.9 Biology - 461.1 Biomedical Engineering - 601.3 Mechanisms
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
58. Accession number: 20091512023322
Title: Design of cropping system based on GIS and model
Authors: Shan, Yingjie1 ; Liu, Xiaojun1 ; Jiang, Haiyan1 ; Zhu, Yan1 ; Cao, Weixing1
Author affiliation: 1 Jiangsu Key Laboratory for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author: Zhu, Y. (yanzhu@njau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Based on the summarization and extraction of regional agriculture cropping evaluation theory and technology achievements, a set of dynamic knowledge models which can be used for cropping ecological zoning, cropping system design, precision management, and estimation of cropping productivity were developed through system analysis theory and modeling method. By using the technology of software component, with GIS as spatial information management platform, a GIS and model-based system for cropping design was developed. The system realized the standard management about regional cropping information and cropping system design and management at different levels, provided the functions such as file management, map handling, information query, ecological zoning, cropping system design, precision management, estimation of cropping productivity, expert knowledge consultation, system maintenance and system help. Case studies on the system with the datasets in Jiangsu Province indicate that the system can effectively carry out cropping design function, which lays a foundation for facilitating the quantification and digitization of cropping design system.
Number of references: 21
Main heading: Design
Controlled terms: Agriculture - Computer software maintenance - Geographic information systems - Information management - Land use - Systems analysis - Technology - Zoning
Uncontrolled terms: Cropping design - Cropping systems - Data-sets - Design functions - Design systems - Digital agriculture - Expert knowledge - File managements - GIS - Information queries - Jiangsu provinces - Model-based systems - Software component technology - Software components - System analysis - System maintenances
Classification code: 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 901 Engineering Profession - 902.1 Engineering Graphics - 961 Systems Science - 903.2 Information Dissemination - 912.2 Management - 912.3 Operations Research - 903.3 Information Retrieval and Use - 731.1 Control Systems - 723.3 Database Systems - 403 Urban and Regional Planning and Development - 403.1 Urban Planning and Development - 403.2 Regional Planning and Development - 408 Structural Design - 442.2 Land Reclamation - 723 Computer Software, Data Handling and Applications
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
59. Accession number: 20091512023239
Title: Mechanical evaluation and cause analysis of rice-stem lodging resistance under controlled irrigation in cold region
Authors: Peng, Shizhang1, 2 ; Zhang, Zhengliang1, 2 ; Pang, Guibin1, 3
Author affiliation: 1 State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
2 College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
3 Institute of Water-saving, Hohai University, Nanjing 210098, China
Corresponding author: Peng, S. (szpeng@hhu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to evaluate the differences of rice-stem lodging resistance between controlled irrigation and regular irrigation, and seek irrigation treatment which was beneficial to rice stem lodging resistance, rice-stem was taken as the research object, and the performance of rice-stem lodging resistance was studied under different irrigation treatments. Stem coefficient was introduced, and the mechanical analysis of rice-stem was carried out. The differences of lodging resistance ability under two kinds of controlled irrigations and one kind of regular irrigation were compared. The result showed that the values of internode plumpness of rice stem under controlled irrigations were bigger than that under regular irrigation, and the values of wall thickness of rice stem under KI and KII were much superior to that under regular irrigation by
Number of references: 24
Main heading: Irrigation
Controlled terms: Grain (agricultural product) - Mechanical properties
Uncontrolled terms: Cold regions - Controlled irrigation - Critical forces - Irrigation treatments - Lodging resistance - Mechanical analysis - Mechanical evaluations - Research objects - Rice stem - Stem coefficient - Stem lodgings - Wall thickness
Classification code: 821.3 Agricultural Methods - 821.4 Agricultural Products - 931.1 Mechanics - 951 Materials Science
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
60. Accession number: 20091512023325
Title: Design of a recirculating aquaculture system based on mass balance
Authors: Liu, Huang1, 2, 3 ; Chen, Jun1, 3 ; Ni, Qi1, 2 ; Xu, Hao1, 3
Author affiliation: 1 Key Laboratory of Fishery Equipment and Engineering, Ministry of Agriculture, Shanghai 200092, China
2 Key Laboratory of Fishery Water Treatment, Chinese Academy of Fishery Sciences, Shanghai 200092, China
3 Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China
Corresponding author: Liu, H. (Liuhuang910@gmail.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Quick removal of the water soluble ammonia and increase of dissolved oxygen are the core issues of system design. The system design calculating formula and basic processes ammonia and dissolved oxygen balance equation were established using mass balance relations, and the system design formula was derived. Some formulas were modified according to project practice experience. A group of appropriate design parameters closer to practical situation were obtained, for example: system compensated water volume, oxygen supply quantity, recirculation quantity, cycle-index, effective volume of biological filter and so on. At the same time, a basic flow for designing intensive recirculating aquaculture system was also constructed. A case design of a high-density recirculating aquaculture system for catfish (Ictalurus) with an annual output of 50 tons and rearing density of
Number of references: 18
Main heading: Dissolved oxygen
Controlled terms: Agriculture - Ammonia - Aquaculture - Biochemical oxygen demand - Biofiltration - Design - Dissolution - Dissolved oxygen sensors - Filters (for fluids) - Oxygen supply - Particle detectors - Systems analysis - Water filtration
Uncontrolled terms: Annual outputs - Basic flows - Biological filters - Design parameters - Effective volumes - High densities - Mass balance - Oxygen balances - Re circulations - Recirculating aquaculture systems - Supply quantities - System designs - Water compensations - Water soluble - Water volumes
Classification code: 802.1 Chemical Plants and Equipment - 801 Chemistry - 731.1 Control Systems - 672.1 Combat Naval Vessels - 652.1 Aircraft, General - 545.3 Steel - 961 Systems Science - 802.3 Chemical Operations - 944.7 Radiation Measuring Instruments - 912.3 Operations Research - 902.1 Engineering Graphics - 821.3 Agricultural Methods - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 804.2 Inorganic Compounds - 804 Chemical Products Generally - 471.5 Sea as Source of Minerals and Food - 462.1 Biomedical Equipment, General - 452 Municipal and Industrial Wastes; Waste Treatment and Disposal - 451.2 Air Pollution Control - 445.1 Water Treatment Techniques - 445 Water Treatment - 444 Water Resources - 408 Structural Design - 452.2 Sewage Treatment - 453 Water Pollution - 454.3 Ecology and Ecosystems - 461.7 Health Care - 461.8 Biotechnology - 461.9 Biology - 452.4 Industrial Wastes Treatment and Disposal
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
61. Accession number: 20091512023324
Title: Application of acoustic frequency technology to protected vegetable production
Authors: Hou, Tianzhen1 ; Li, Baoming1 ; Teng, Guanghui1 ; Zhou, Qing1 ; Xiao, Yingping2 ; Qi, Lirong1
Author affiliation: 1 Key Laboratory of Agriculture for Agricultural Engineering in Structure and Environment, College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
2 Yunong Beijing's Cultivation of High-quality Agricultural Products, Yangzhen Plantation, Beijing 101309, China
Corresponding author: Li, B. (libm@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The acoustic frequency technology is to treat the plant with a specific frequency sound wave. Acoustic studies have found that plants can produce low frequency sound spontaneously. With the addition of the technology, the specific frequency sounds to make a match-absorption and resonance on the target plants. Thus, the technology strengthens photosynthesis and speeds of cell split and makes plant grow and develop faster. Treated plants are blooming and bearing fruits ahead of time. Acoustic frequency technology was applied to sweet pepper, cucumber and tomato in greenhouse. Various controlled experiments were made and all results indicted that the technology could increase the output of vegetables notably, improve crops quality, strengthen the capability of disease-resistance. The yields of treated sweet pepper, cucumber and tomato were 63.05%, 67.1% and 13.2%, respectively higher than that of control group. Moreover, the incidence of treated tomato disease decreased by 6, 8, 9, 11 and 8 percentage points, respectively, including red spider, aphids, grey mold, late blight and virus disease.
Number of references: 15
Main heading: Technology
Controlled terms: Acoustics - Agriculture - Carbon fiber reinforced plastics - Fruits - Photosynthesis
Uncontrolled terms: Acoustic frequency technology - Cucumber - Protected agriculture - Sweet pepper - Tomato
Classification code: 821.4 Agricultural Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 817.1 Polymer Products - 901 Engineering Profession - 802.2 Chemical Reactions - 741.1 Light/Optics - 415.2 Plastics Structural Materials - 751 Acoustics, Noise. Sound
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
62. Accession number: 20091512023264
Title: Estimation of autumn harvest crop planting area based on NDVI sequential characteristics
Authors: Xiong, Qinxue1 ; Huang, Jingfeng2
Author affiliation: 1 College of Agriculture, Yangtzeu University, Jingzhou 434025, China
2 Institute of Remate Sensing and Information System Application, Zhejinag University, Hangzhou 310029, China
Corresponding author: Xiong, Q. (nxqx@tom.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: NDVI sequential characteristics of various ground objects was analyzed which was on MODIS data of Jiangling County, Hubei Province. By the standards of crop rotation period's data and NDVI mean value, spatial distributions of three kinds of crops were obtained using BP neural network supervised classification based on the hierarchical method for crop regions and non-crop regions distinguishing. Compared with standard results calculated with ETM data, the average error ratio of the research is 13.6%. Results indicated that the method can accurately reflect various crop distributions in Jiangling County and be applied for crops classification.
Number of references: 19
Main heading: Neural networks
Controlled terms: Crops - Spectrometers
Uncontrolled terms: Area-based - Average errors - Bp-neural networks - Crop rotations - Hierarchical methods - Hubei provinces - Mean values - MODIS - NDVI - Spatial distributions - Supervised classification
Classification code: 461.1 Biomedical Engineering - 723.4 Artificial Intelligence - 741.3 Optical Devices and Systems - 801 Chemistry - 821.4 Agricultural Products - 941.3 Optical Instruments
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
63. Accession number: 20091512023302
Title: Effects of land use on soil moisture in loess hilly and gully region of China
Authors: Wang, Guoliang1, 2 ; Liu, Guobin2 ; Dang, Xiaohu3
Author affiliation: 1 Institute of Soil and Water Conservation, Northwest Agriculture and Forestry University, Yangling 712100, China
2 Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resource, Yangling 712100, China
3 School of geology and environment, Xi'an University of Science and Technology, Xi'an 710054, China
Corresponding author: Wang, G. (glwang@nwsuaf.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In arid and semiarid region, soil moisture is one of the key factors influencing plant growth. In this paper, the soil moisture in different land use types were investigated by auger in a small watershed in hilly and gully region of the Loess Plateau, China. The results showed that soil moisture in croplands was the highest, which was due to gentle slopes, terrace building and lower crop water requirements. The soil moisture in forestlands, shrub lands and grasslands were lower and had no significant difference between any two of them. The stepwise regression analysis showed that soil moistures was mainly influenced by slope gradient and soil stable infiltration rate. Furthermore, the soil moisture in grassland was also influenced by slope aspect and aboveground biomass. In conclusion, croplands can be built on gentle slopes (< 10°). In steep gradient, the vegetation building should emphasize the natural community conservation. The artificial vegetation including forest and bush can be built in small topographies with higher soil moisture such as the bottom of gully.
Number of references: 17
Main heading: Soil moisture
Controlled terms: Arid regions - Biomass - Buildings - Groundwater - Infiltration - Land use - Landforms - Moisture determination - Permittivity - Plant life extension - Regression analysis - Soil conservation - Vegetation
Uncontrolled terms: Above-ground biomass - Arid and semi-arid regions - Artificial vegetations - Crop water requirements - Different land use types - Distribution pattern - Forest lands - Infiltration rates - Key factors - Loess hilly and gully region - Loess plateaux - Plant growths - Slope aspects - Slope gradients - Small watersheds - Steep gradients - Stepwise regression analysis - Terrace building
Classification code: 701 Electricity and Magnetism - 708.1 Dielectric Materials - 802.3 Chemical Operations - 805.1.1 Biochemical Engineering - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 821.5 Agricultural Wastes - 901.4 Impact of Technology on Society - 912.1 Industrial Engineering - 922.2 Mathematical Statistics - 944.2 Moisture Measurements - 525.1 Energy Resources and Renewable Energy Issues - 402 Buildings and Towers - 402.1 Industrial and Agricultural Buildings - 403 Urban and Regional Planning and Development - 442.2 Land Reclamation - 443 Meteorology - 444 Water Resources - 444.2 Groundwater - 452.1 Sewage - 461.9 Biology - 481.1 Geology - 483.1 Soils and Soil Mechanics
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
64. Accession number: 20091512023344
Title: Optimization of technology for ultrasonic-assisted extraction of pigments from black soybean hulls
Authors: Li, Dajing1, 2, 3 ; Song, Jiangfeng1, 3 ; Liu, Chunquan1, 3 ; Yu, Miao2
Author affiliation: 1 Institute of Farm Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
2 College of Forestry, Northeast Forestry University, Harbin150040, China
3 Engineering Research Center for Agricultural Products Processing, National Agricultural Science and Technology Innovation Center in East China, Nanjing 210014, China
Corresponding author: Liu, C. (lcq@jaas.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Ultrasonic-assisted extraction of pigments from black soybean hulls was investigated. Based on the single factor experiments, the effects of different ultrasonic power, pH values and the ratios of solution to solid on the extraction yield of pigments from black soybean hulls were optimized with Response Surface Methodology (RSM). A mathematical model was established and analyzed to describe the relationships between the studied factors and the response of the total extraction yield of pigments from black soybean hulls. The optimum extraction parameters are as follows: ultrasonic power 80 W, pH1.5 and the ratio of solution to solid 30 mL/g. Under the optimum conditions, the extraction rate of pigments from black soybean hulls can reach 95.6%.
Number of references: 18
Main heading: Extraction
Controlled terms: Paint - pH effects - Solid solutions - Ultrasonic waves - Ultrasonics
Uncontrolled terms: Black soybean hulls - Extraction rates - Extraction yields - Optimum conditions - pH values - Response surface methodologies - RSM - Ultrasonic power
Classification code: 539.2.2 Protecting Materials - 753.1 Ultrasonic Waves - 801.1 Chemistry, General - 802.3 Chemical Operations - 813.2 Coating Materials - 933 Solid State Physics
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
65. Accession number: 20091512023296
Title: Gap design and optical losses of compound parabolic concentrators
Authors: Wu, Maogang1 ; Tang, Runsheng1 ; Cheng, Yanbin1 ; Wang, Zhigang1
Author affiliation: 1 Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology, Solar Energy Research Institute, Yunnan Normal University, Kunming 650092, China
Corresponding author: Wu, M.
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Compound parabolic concentrators (CPCs) have been widely used in solar thermal and photovoltaic electricity generating systems due to their simple structure without any tracking system. The reflectors of a typical ideal CPC contacts the absorber at the ends of absorber, but a gap must be left between the absorber and reflectors for practical applications due to practical requirements. In this article, three common design options of CPCs were presented and the optical losses through gaps were theoretically analyzed. A comparison of gap losses for three design options of a CPC was also made. The results showed that, for CPCs with flat absorbers, the preferable design option of gaps for minimizing optical loss was to truncate the reflectors adjacent to the absorber; for CPCs with a tubular absorber, the best way was to modify the virtual absorber of ideal CPCs to accommodate the actual tubular absorber so that a gap could be produced, the next was to truncate the reflectors near the absorber.
Number of references: 16
Main heading: Design
Controlled terms: Corrosion prevention - Optical losses - Reflection - Solar concentrators - Solar power generation - Solar system
Uncontrolled terms: Compound parabolic concentrators - Design options - Gap design - Generating systems - Photovoltaic electricities - Simple structures - Solar thermals - Tracking systems
Classification code: 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 711 Electromagnetic Waves - 702.3 Solar Cells - 902.1 Engineering Graphics - 657.2 Extraterrestrial Physics and Stellar Phenomena - 615.2 Solar Power - 539.2 Corrosion Protection - 408 Structural Design - 657.1 Solar Energy and Phenomena
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
66. Accession number: 20091512023317
Title: Characteristics of the spatial and temporal distribution for regional evapotranspiration in the Yellow River Delta based on MODIS data
Authors: Li, Fapeng1, 2 ; Xu, Zongxue1 ; Li, Jingyu3
Author affiliation: 1 Key Laboratory for Water and Sediment Sciences, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China
2 Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China
3 Office of Chief Engineer, China Institute of Land Surveying and Planning, Ministry of Land and Resources, Beijing 100035, China
Corresponding author: Xu, Z. (zxxu@bnu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Estimation of land surface evapotranspiration (ET) is one of the most difficult tasks in the field of hydrology and water resources. In this study, ET in the Yellow River Delta is estimated using remote sensing techniques, which own the characteristics of high efficiency, precision, large-scale and visualization. The Yellow River Delta has a specific geographic feature and it is an important petroleum production base in China. However, the health of ecosystem in this region is just enduring severe water resources stress. Surface Energy Balance System (SEBS) model being an applicable model with good theoretic basis to estimate land surface ET with less meteorological data requirement, is used to estimate land surface ET in the Yellow River Delta on the basis of MODIS data. Results show that annual ET is single-peak distributed in month scale with a well seasonal variation. Spatially, ET in southern areas is generally greater than that in northern areas remarkably influenced by human-being activities. Results of water deficit analysis show that ET in spring and autumn is relatively higher than that in natural precipitation with greater irrigation requirement, and water supply in this period has greater importance for both agriculture and ecology development.
Number of references: 27
Main heading: Rivers
Controlled terms: Evapotranspiration - Remote sensing - Spectrometers - Surface chemistry - Surface measurement - Surface tension - Water analysis - Water supply
Uncontrolled terms: High efficiencies - Hydrology and water resources - Land surface evapotranspiration - Meteorological datum - MODIS - Petroleum productions - Regional evapotranspirations - Remote sensing techniques - Seasonal variations - Surface energy balance systems - Temporal distributions - Water deficits - Yellow River Delta
Classification code: 941.3 Optical Instruments - 931.2 Physical Properties of Gases, Liquids and Solids - 802.3 Chemical Operations - 801.4 Physical Chemistry - 801 Chemistry - 943.2 Mechanical Variables Measurements - 741.3 Optical Devices and Systems - 446.1 Water Supply Systems - 445.2 Water Analysis - 444.1 Surface Water - 407.2 Waterways - 731.1 Control Systems
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
67. Accession number: 20091512023242
Title: Effects of after-anthesis defoliation on grain yield formation and water use efficiency of winter wheat
Authors: Shao, Liwei1, 2 ; Zhang, Xiying1 ; Chen, Suying1 ; Sun, Hongyong1 ; Gao, Lina1, 2
Author affiliation: 1 Center for Agricultural Resources Research, Institute of Genetic and Biological Development, Chinese Academy of Science, Shijiazhuang 050021, China
2 Graduate School, Chinese Academy of Sciences, Beijing 100039, China
Corresponding author: Zhang, X. (xyzhang@sjziam.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: With the increasing water shortage, improving water use efficiency is becoming more and more important. Reducing the transpiration of a plant is a way to reduce crop water use. Experiments were carried out. The effects of defoliation on photosynthesis, dry matter translocation, grain yield and water use efficiency (WUE) were investigated with different defoliation degrees and different soil water levels. The field experimental results show that defoliation enhanced the photosynthetic capacity of the remaining leaves. The defoliation under water deficit conditions advances dry mater translocation from the remaining leaves and the straw to the wheat grain, and the treatments of 30% and 60% defoliation increased more translocation of dry matter to the wheat grain than that of the others. The 30% and 60% defoliation treatments did not affect grain yield of the winter wheat, while the 90% defoliation under deficit conditions significantly reduced crop water use, but resulted in significant decrease of grain yield and reduced WUE. Moderate defoliation under water stress might be beneficial to crop production.
Number of references: 30
Main heading: Grain (agricultural product)
Controlled terms: Biochemical oxygen demand - Crops - Cultivation - Photosynthesis - Plants (botany) - Soil moisture - Underwater soils - Water levels - Water supply
Uncontrolled terms: A plants - Crop productions - Crop water use - Defoliation - Dry mater translocation - Dry matters - Grain yield - Photosynthetic capacities - Soil waters - Under waters - Water shortages - Water use efficiency - Wheat grains - Winter wheats
Classification code: 821.4 Agricultural Products - 821.3 Agricultural Methods - 802.2 Chemical Reactions - 741.1 Light/Optics - 614.2 Steam Power Plant Equipment and Operation - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 461.9 Biology - 453 Water Pollution - 452.4 Industrial Wastes Treatment and Disposal - 452.2 Sewage Treatment - 446.1 Water Supply Systems - 407.2 Waterways
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
68. Accession number: 20091512026365
Title: Seeding cavity detection in tray nursing seedlings of super rice based on computer vision technology
Authors: Qi, Long1 ; Ma, Xu2 ; Zhou, Haibo3
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, South China Agricultural University, Guangzhou 510642, China
3 College of Mechanical Engineering, Jiamusi University, Jiamusi 154007, 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
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: There are the seeding cavities due to the low seeding number of super rice, which have influence on yield in rice. For solving the problem, seeding cavities of the super rice nursing tray were detected in continuous seeding process. The vision detection procedure was arranged between seeding and covering soil in rice seeding pipeline. The CCD(Charge Coupled Device) camera shot tray images continuously, and mask images were obtained which were consistent with the tray seeding cavities. The image information of storage buffer was achieved by reading program at certain time intervals. After the images were processed and analyzed, the position of seeding cavities were tracked and results were stored in seeding cavities database for re-seeding. The technology decreased cavities ratio of tray nursing seedlings and improved the seedling survival rate of super rice precision seeding.
Number of references: 15
Main heading: Grain (agricultural product)
Controlled terms: Buffer storage - Cameras - CCD cameras - Charge coupled devices - Computer vision - Digital cameras - Imaging systems - Integrated circuits - Nursing - Pipelines - Signal processing
Uncontrolled terms: Computer vision technologies - Image informations - Precision seeding - Seeding cavity detection - Seeding process - Seedling survivals - Super rice - Time intervals - Tray nursing seedlings
Classification code: 821.4 Agricultural Products - 746 Imaging Techniques - 742.2 Photographic Equipment - 741.2 Vision - 741 Light, Optics and Optical Devices - 731.6 Robot Applications - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 722.1 Data Storage, Equipment and Techniques - 716.1 Information Theory and Signal Processing - 714.2 Semiconductor Devices and Integrated Circuits - 619.1 Pipe, Piping and Pipelines - 461.7 Health Care
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
69. Accession number: 20091512023277
Title: Optimized conditions for saccharification of cotton stalk by alkali pretreatment
Authors: Deng, Hui1 ; Li, Chun2 ; Li, Fei3 ; Chen, Jiluan3
Author affiliation: 1 School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
2 School of Life Science and Technology, Beijing Institute of Technology, Beijing 100081, China
3 Food College, Shihezi University, Shihezi 832003, China
Corresponding author: Chen, J. (chenjiluan@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Cotton stalk resources are rich in Xinjiang. After pretreating, the cotton stalk can be efficiently hydrolyzed by cellulase. The treatment conditions for the pretreatment of cotton stalk by alkali and alkali/microwave were investigated for comprehensive utilization of cotton stalk waste. The contents of lignin and hemicellulose of cotton stalk were decreased by 60.42% and 35.05% at the following conditions: concentration of NaOH(2%), solid to liquid ratio(1:20), temperature(
Number of references: 24
Main heading: Cotton
Controlled terms: Carbohydrates - Cellulose - Saccharification - Waste treatment
Uncontrolled terms: Alkali - Alkali/microwave pretreatment - Cotton stalk - Enzymic hydrolysis - Pretreatment
Classification code: 819.1 Natural Fibers - 815.1.1 Organic Polymers - 811.3 Cellulose, Lignin and Derivatives - 821.4 Agricultural Products - 804.1 Organic Compounds - 801.2 Biochemistry - 452.4 Industrial Wastes Treatment and Disposal - 802.2 Chemical Reactions
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
70. Accession number: 20091512023274
Title: Emission reduction from Clean Development Mechanism projects on intensive livestock farms and its economic benefits
Authors: Li, Yu'e1, 2 ; Dong, Hongmin1 ; Wan, Yunfan1 ; Qin, Xiaobo1 ; Gao, Qingzhu1 ; Hua, Luo2
Author affiliation: 1 Key Ministerial Laboratory of Environment and Climate Change, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
2 College of Resources and Tourism, Capital Normal University, Beijing 100037, China
Corresponding author: Li, Y. (yueli@ami.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The livestock farm in Minhe, Shandong Province was the site of this study. Using methodology (ACM0010) approved by Executive Board (EB) of Clean Development Mechanism (CDM) under United Nation Framework Convention on Climate Change, greenhouse gas emission reduction was analyzed by improving chicken manure management on chicken farms and utilizing a biogas power generation system to supply electricity and displace electricity from a grid-based conventional energy source. The emission reduction was estimated to be 84666 t CO2 equivalent a year. The revenue from sale of electricity would be 7.67 million Yuan per year, and 5.93 million Yuan per year from sale of carbon credit. The payback period of investment would be 19.7 years if no revenue from carbon credit was included. The payback period of investment would be 6.0 years if the revenue from carbon credit was included. Therefore, construction of biogas digesters on intensive livestock farms to treat livestock manure and carry out power generation using the produced biogas can not only improve the environment, utilize renewable energy and reduce fossil fuel consumption, but also reduce greenhouse gas emissions and obtain revenue from the emission reduction. The CDM project will provide additional incentives for the livestock farms to construct biogas digesters.
Number of references: 16
Main heading: Gas emissions
Controlled terms: Biogas - Carbon monoxide - Climatology - Continuum damage mechanics - Economics - Electric generators - Electric power generation - Emission control - Energy policy - Farms - Fossil fuels - Global warming - Greenhouse gases - Greenhouses - Investments - Leakage (fluid) - Manures - Mesh generation - Project management - Pulp digesters - Renewable energy resources
Uncontrolled terms: Biogas digesters - Carbon credits - CDM project management - CDM projects - Chicken manures - Clean development mechanisms - Conventional energy sources - Economic benefits - Emission reduction - Executive boards - Fossil fuel consumption - Green house gas emissions - Greenhouse gas emission reductions - Grid-based - Intensive livestock farms - Livestock manures - Payback periods - Power generation systems - Renewable energies - Shandong provinces - United nations
Classification code: 811.1.2 Papermaking Equipment - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 802.1 Chemical Plants and Equipment - 723.5 Computer Applications - 705.2 Electric Generators - 619.1 Pipe, Piping and Pipelines - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 971 Social Sciences - 931.1 Mechanics - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 912.2 Management - 911.2 Industrial Economics - 821.6 Farm Buildings and Other Structures - 821.5 Agricultural Wastes - 615 Thermoelectric, Magnetohydrodynamic and Other Power Generators - 451.2 Air Pollution Control - 451.1 Air Pollution Sources - 451 Air Pollution - 443.1 Atmospheric Properties - 443 Meteorology - 421 Strength of Building Materials; Mechanical Properties - 402.1 Industrial and Agricultural Buildings - 452.1 Sewage - 525.6 Energy Policy - 525.1 Energy Resources and Renewable Energy Issues - 524 Solid Fuels - 523 Liquid Fuels - 522 Gas Fuels - 483.1 Soils and Soil Mechanics - 452.3 Industrial Wastes
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
71. Accession number: 20091512023288
Title: Extraction, separation and purification of chondroitin sulfate from chicken keel cartilage
Authors: Xiong, Shuangli1 ; Li, Anlin1 ; Wu, Zhaomin1 ; Wei, Ming1
Author affiliation: 1 School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
Corresponding author: Xiong, S. (lxberry225@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: This article mainly adopted response surface methodology to optimize the extracting technology of chondroitin sulfate by enzyme. Chondroitin sulfate with high purity was obtained after trichloacetic acid for deproteinization, alcohol precipitation and column chromatography for further isolation and purification. High performance gel filtration chromatography was used to identify purity of chondroitin sulfate. Infrared spectrum and nuclear magnetic resonance were used to analyze its isomerism. The results show that the optimal condition of extraction was
Number of references: 15
Main heading: Sulfur compounds
Controlled terms: Acids - Cartilage - Chromatographic analysis - Column chromatography - Gel permeation chromatography - Gelation - Gels - Glucose - Infrared spectroscopy - Ligaments - Meats - Nuclear magnetic resonance - Nuclear magnetic resonance spectroscopy - Porous materials - Purification - Resonance - Spectrum analysis - Stereochemistry
Uncontrolled terms: Chicken keel cartilage - Chondroitin - Chondroitin sulfate - Deproteinization - Extraction rates - Extraction time - Gel-filtration chromatographies - Glucuronic acids - High purities - Infrared spectrum - Isolation and purifications - Optimal conditions - Response surface methodologies - Separation and purifications - Seperation
Classification code: 921 Mathematics - 922.2 Mathematical Statistics - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 951 Materials Science - 932.2 Nuclear Physics - 941.4 Optical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 822.3 Food Products - 804.2 Inorganic Compounds - 461.2 Biological Materials and Tissue Engineering - 701 Electricity and Magnetism - 741.1 Light/Optics - 751.1 Acoustic Waves - 801 Chemistry - 801.3 Colloid Chemistry - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
72. Accession number: 20091512023343
Title: Feasibility for producing succinic acid by fermentation of cornhusk dilute acid hydrolysate after detoxification
Authors: Wu, Hao1 ; Yao, Jiamin1 ; Liu, Zongmin1 ; Chen, Kequan1 ; Zuo, Peng1 ; Jiang, Min1 ; Wei, Ping1
Author affiliation: 1 State Key Laboratory of Materials-Oriented Chemical Engineering, College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 210009, China
Corresponding author: Jiang, M. (jiangmin@njut.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Succinic acid is an important C4 platform chemical. Utilization of non-food biomass instead of starch for succinic acid production by fermentation does not threaten grain provisionment and can reduce the cost of substrate. Cornhusk is a kind of non-food and low-cost biomass. Cornhusk was hydrolyzed by dilute acid in this research. Optimized technical conditions for detoxification of cornhusk dilute acid hydrolysate were determined by experiments: activated carbon 1%(W/V), pH4.0, temperature
Number of references: 15
Main heading: Acids
Controlled terms: Activated carbon - Aldehydes - Batch cell culture - Biochemical engineering - Biological materials - Biomass - Concentration (process) - Detoxification - Fermentation - Furfural - Glucose - Hydrolysis - Methanol - Sugar (sucrose)
Uncontrolled terms: A carbons - Actinobacillus succinogenes NJ113 - Anaerobic fermentations - Batch cultures - Cornhusk - Decoloration - Dilute acids - Dilute-acid hydrolysates - Hydroxymethyl furfurals - Polyphenol - Succinic acid - Sugar concentrations - Technical conditions
Classification code: 822.3 Food Products - 821.5 Agricultural Wastes - 805.1.1 Biochemical Engineering - 804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.3 Chemical Operations - 802.2 Chemical Reactions - 801.2 Biochemistry - 525.1 Energy Resources and Renewable Energy Issues - 461.8 Biotechnology - 461.2 Biological Materials and Tissue Engineering - 445.1 Water Treatment Techniques
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
73. Accession number: 20091512023303
Title: Spatial and temporal variability of soil moisture in hilly red soil region based on land use and microtopography
Authors: Luo, Yong1 ; Chen, Jiazhou1 ; Lin, Lirong1 ; Wang, Shuang1
Author affiliation: 1 Key Laboratory of Subtropical Agriculture and Environment, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author: Chen, J. (jzchen@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
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: With the grid sampling method, the surface and subsurface soil moisture of hilly-sloppy lands was determinated in a subtropical soil region in winter and spring. The region includes tea land, upland and forest land. Spatial structures of the soil moisture were analyzed by geostatistics method and classical statistics method. The results showed that the soil moisture of forest land was more abundant than that of tea land and upland, the coefficient of variation of soil moisture in the entire research region was much higher than that of the single land use. The surface and subsurface soil moisture had similar trends of variation in the same season. According to autocorrelation analysis, soil moisture in the entire region had markedly different variation characteristics because of different land use types. Based on strange phenomena from seim-variogram functions, the spatial variation of soil moisture in forest-upland boundary was lower than that in the other places; on the other hand, the soil moisture in the area of tea -upland boundary had no spatial correlation at all. Sample variation was found to have an anisotropy character in the whole region. With respect to influence factors, such complex distribution of soil moisture was explained by different land use types and microtopographty in winter; however, land use was the dominant factor to the variation of soil moisture in spring. The soil moisture of the whole area except tea-upland boundary had good variable and spatial continuity. So it was advisable to apply geostatistics method to study the spatial variability of soil moisture in red hilly region.
Number of references: 20
Main heading: Soil surveys
Controlled terms: Forestry - Groundwater - Land use - Landforms - Moisture determination - Permittivity - Regression analysis - Soil moisture
Uncontrolled terms: Forest-upland boundary - Geostatistics - Microtopographty - Red soil hilly region - Spatial and temporal variability
Classification code: 944.2 Moisture Measurements - 922.2 Mathematical Statistics - 821.0 Woodlands and Forestry - 708.1 Dielectric Materials - 701 Electricity and Magnetism - 483.1 Soils and Soil Mechanics - 481.1 Geology - 444.2 Groundwater - 442.2 Land Reclamation - 406.2 Roads and Streets - 403 Urban and Regional Planning and Development
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
74. Accession number: 20091512023268
Title: Visual simulation model for thermal environment in Chinese solar greenhouse
Authors: Meng, Lili1, 2 ; Yang, Qichang1, 2 ; Bot, Gerard.P.A.3 ; Wang, Nan1, 2
Author affiliation: 1 Institute of Environment and Sustainable in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
2 Key Lab. For Agro-Environment and Climate Change, Ministry of Agriculture, Beijing 100081, China
3 Wageningen University, 6700AA, Netherlands
Corresponding author: Yang, Q. (yangq@cjac.org.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The simulation model for thermal environment in Chinese solar greenhouse was established, in which the solar radiation, heat radiation, heat convection, heat conduction, natural ventilation and water phase transformation were described quantitatively. And the impacts on thermal environment were analyzed. According to thermodynamic law of conservation of mass and energy and heat transfer theory, a group of differential equations on thermal balance of cover, thermal balance of indoor air, thermal balance of multi-layers of north wall, thermal balance of multi-layers of soil, thermal balance of multi-layers of north roof and thermal balance of plant were built. The simulation model was developed with MATLAB procedures used to solve differential equations, and good user interface of VB, and the temperatures of different parts could be calculated. It shows that the model can accurately predict the temperature in greenhouse environment from experimental results.
Number of references: 24
Main heading: Greenhouses
Controlled terms: MATLAB - Phase interfaces - Soil conservation - Solar energy - Solar heating - Sun - User interfaces
Uncontrolled terms: Chinese solar greenhouse - Conservation of mass - Greenhouse environments - Heat transfer theories - Indoor airs - Matlab procedures - Multi-layers - Natural ventilations - Simulation models - Thermal balances - Thermal environment - Visual simulations - Water phase
Classification code: 723.1.1 Computer Programming Languages - 723.5 Computer Applications - 801.4 Physical Chemistry - 821.3 Agricultural Methods - 821.6 Farm Buildings and Other Structures - 921 Mathematics - 931.2 Physical Properties of Gases, Liquids and Solids - 722.2 Computer Peripheral Equipment - 402.1 Industrial and Agricultural Buildings - 483.1 Soils and Soil Mechanics - 615.2 Solar Power - 642.1 Process Heating - 643.1 Space Heating - 657.1 Solar Energy and Phenomena - 657.2 Extraterrestrial Physics and Stellar Phenomena
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
75. Accession number: 20091512023248
Title: Simulation of irrigation requirements of typical cool season turfgrass in Beijing area
Authors: Liu, Lifang1, 2 ; Huang, Guanhua1, 3 ; He, Jianping4 ; Li, Shaosen4 ; Wang, Hongling4 ; Wang, Hu5
Author affiliation: 1 College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
2 College of Water Sciences, Beijing Normal University, Beijing 100875, China
3 Chinese-Israeli International Center for Research and Training in Agriculture, Beijing 100083, China
4 Beijing Municipality Water-Saving Office, Beijing 100036, China
5 Chinese Academy of Agricultural Mechanical Sciences, Beijing 100083, China
Corresponding author: Huang, G. (ghuang@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to reduce the irrigation requirements of turfgrass species and increase the utilization ratio of precipatiation in Beijing, the study focuses on the irrigation requirements of typical cool season turfgrass species under full use of precipatiation. The datasets of two cool season turfgrass species, i.e., Kentucky bluegrass and Tall fescue collected in 2003 were used to calibrate the irrigation scheduling simulation model (ISRAEG), and then the datasets of 2004 were used to validate the ISRAEG model. Finally, the ISAREG model was used to simulate the irrigation schedules for the two cool season turfgrass species in dry, normal and wet years with different maintenance levels. The results show that the value of crop coefficient for the cool season turfgrass species in the growing season is ranged in 0.5~1.0. And the irrigation quantity required for Kentucky bluegrass and Tall fescue are 432~
Number of references: 24
Main heading: Irrigation
Controlled terms: Crops - Groundwater - Maintenance - Moisture determination - Permittivity - Soil moisture
Uncontrolled terms: Cool season turfgrass - Crop coefficient - Data-sets - Growing seasons - Irrigation managements - Irrigation schedules - Irrigation scheduling - Kentucky - Maintenance levels - Soil moisture simulation - Tall fescues - Turf-grasses - Utilization ratios
Classification code: 913.5 Maintenance - 821.4 Agricultural Products - 821.3 Agricultural Methods - 944.2 Moisture Measurements - 708.1 Dielectric Materials - 483.1 Soils and Soil Mechanics - 444.2 Groundwater - 701 Electricity and Magnetism
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
76. Accession number: 20091512023289
Title: Technology for preparation of semidry solid nitrosohemoglobin from pig blood
Authors: Zheng, Lihong1 ; Xiao, Yuejuan1 ; Li, Fengying1 ; Li, Hanchen1 ; Guo, Shuo1 ; Ren, Fazheng2
Author affiliation: 1 Department. of Food Engineering, ,, Hebei Normal University of Science and Technology, Changli 066600, China
2 College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Ren, F.
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to make use of pig blood sufficiently and provide colorant which possesses excellent color and is rich in nutrition for meat products, hemoglobin solution was seperated from fresh pig blood and semidry solid nitrosohemoglobin was prepared with vitamin C as reducer and sodium nitrite as color fixatives and the preparation of hemachrome is not necessary. Single factor experiment was conducted to determine the best range of additon of sodium nitrite, addtion of vitamin C and heating time in which chromogenic rate of the prepared nitrosohemoglobin is higher. orthogonal test of three factors and three levels was conduted to optimize the technology. The results show that the optimum technology is as follows: hemachrome, sodium nitrite and vitamin C should be mixed in hemoglobin solution as the mol ratio of 1:3:12, heating temperature is
Number of references: 14
Main heading: Blood
Controlled terms: Color - Heating - Hemoglobin - Sodium - Technology
Uncontrolled terms: Fixation - Heating temperatures - Heating time - Holding time - Meat products - Nitrosohemoglobin - Orthogonal tests - Pig - Preparation technology - Sodium nitrites - Vitamin-C
Classification code: 901 Engineering Profession - 804 Chemical Products Generally - 741.1 Light/Optics - 643.1 Space Heating - 642.1 Process Heating - 549.1 Alkali Metals - 461.2 Biological Materials and Tissue Engineering
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
77. Accession number: 20091512023342
Title: Micronizing treatment of wheat germ and optimization of extraction technology for wheat germ protein
Authors: Guo, Hongying1 ; Dong, Ying1
Author affiliation: 1 College of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Dong, Y.
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Defatted wheat germ was micronized by comibmed method of hammer mill and colloid mill in order to increase the extraction rate of protein, followed by steps of alkali extraction and ultrafilter concentration, respectively. A quadratic mathematical model was developed statistically by means of Box-Behnken central composite design (CCD) and response surface methodology (RSM). Consequently, the optimized processing parameters were determined, including particle sizes of 23 μm, pH value of 9.5 and temperature of
Number of references: 20
Main heading: Grain (agricultural product)
Controlled terms: Alkalinity - Charge coupled devices - Milling (machining) - Surface properties
Uncontrolled terms: Box-Behnken - Central composite designs - Colloid mills - Extraction rates - Extraction technologies - Hammer mills - Micronization - Milling - Optimized conditions - pH values - Processing parameters - Response surface methodology - Ultrafilter - Wheat germ
Classification code: 604.2 Machining Operations - 714.2 Semiconductor Devices and Integrated Circuits - 801.1 Chemistry, General - 821.4 Agricultural Products - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
78. Accession number: 20091512023244
Title: Effects of nitrogen fertilizer application and irrigation level on soil nitrate nitrogen accumulation and water and nitrogen use efficiency for wheat/maize intercropping
Authors: Ye, Youliang1 ; Li, Long2, 3
Author affiliation: 1 College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China
2 Key Laboratory of Plant Nutrition, China Agricultural University, Beijing 100094, China
3 Key Laboratory of Plant and Soil Interactions, College of Resources and Environment, China Agricultural University, Beijing 100094, China
Corresponding author: Ye, Y. (ylye2004@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title: Nongye Gongcheng Xuebao
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to improve nitrogen and water use efficiency, effects of nitrogen fertilizer application and irrigation level on soil nitrate nitrogen accumulation and water and nitrogen use efficiency for wheat/maize intercropping were conducted in Hexi corridor of Gansu Province with three nitrogen rates (0, 225 and
Number of references: 20
Main heading: Nitrogen fertilizers
Controlled terms: Biochemical oxygen demand - Irrigation - Nitrates - Nitrogen - Soils - Water supply
Uncontrolled terms: Accumulation - Irrigation level - Nitrate nitrogen - Nitrogen use efficiency - Water use efficiency - Wheat/maize intercropping
Classification code: 821.3 Agricultural Methods - 821.2 Agricultural Chemicals - 804.2 Inorganic Compounds - 804 Chemical Products Generally - 483.1 Soils and Soil Mechanics - 453 Water Pollution - 452.4 Industrial Wastes Treatment and Disposal - 452.2 Sewage Treatment - 446.1 Water Supply Systems
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
79. Accession number: 20091512023284
Title: Analysis of temporal and spatial features of farmland productivity in the Sanjiang plain
Authors: Guo, Zhixing1, 2, 3 ; Wang, Zongming4 ; Liu, Dianwei4 ; Song, Kaishan4 ; Song, Changchun4
Author affiliation: 1 State Key Laboratory of Earth Surface Processes and Resources Ecology, Beijing Normal University, Beijing 100875, China
2 Key Laboratory of Environmental Change and Natural Disaster, Beijing Normal University, Beijing 100875, China
3 Academy of Disaster Reduction and Emergency Management, Ministry of Civil Affairs and Ministry of Education, The People's Republic of China, Beijing 100875, China
4 Institute of Northeast Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China
Corresponding author: Wang, Z. (zongmingwang@neigae.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to improve farmland productivity, the temporal and spatial features of farmland productivity were analyzed in the Sanjiang Plain from 2000 to 2005 based on the MOD
Number of references: 29
Main heading: Farms
Controlled terms: Climatology - Forestry - Land use - Landforms - NASA - Photosynthesis - Productivity - Remote sensing - Size distribution
Uncontrolled terms: Climatic changes - Climatic factors - Correlation coefficients - Dry farmlands - Human activities - Net Primary Production (NPP) - Net primary productivities - Precipitation distributions - Sanjiang Plain - Spatial distributions - Temporal and spatial features
Classification code: 802.2 Chemical Reactions - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.0 Woodlands and Forestry - 741.1 Light/Optics - 913.1 Production Engineering - 931.2 Physical Properties of Gases, Liquids and Solids - 933.1 Crystalline Solids - 922.2 Mathematical Statistics - 731.1 Control Systems - 423 Non Mechanical Properties and Tests of Building Materials - 442.2 Land Reclamation - 443 Meteorology - 403 Urban and Regional Planning and Development - 481.1 Geology - 655 Spacecraft - 656 Space Flight - 531.2 Metallography
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
80. Accession number: 20091512023276
Title: Experimental study on biomass fast pyrolysis in fluidized bed and analysis of bio-oil
Authors: Liu, Shanjian1 ; Yi, Weiming1 ; Bai, Xueyuan1 ; Wang, Lihong1, 2 ; Yin, Zhe1 ; Wu, Juan1
Author affiliation: 1 Shandong Research Center of Engineering and Technology for Clean Energy, Shandong University of Technology, Zibo 255091, China
2 College of Engineering, Shenyang Agricultural University, Shenyang 110161, China
Corresponding author: Yi, W. (yiweiming@sdut.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to study the behavior of fast pyrolysis of corn stalk powder, a set of fluidized bed with feed-in amounts of
Number of references: 12
Main heading: Fluidized beds
Controlled terms: Biological materials - Biomass - Chemical reactions - Chromatographic analysis - Fluid dynamics - Fluidization - Gas chromatography - High performance liquid chromatography - Mass spectrometry - Pyrolysis - Quality control - Thermogravimetric analysis
Uncontrolled terms: Bed materials - Bio-oil - Corn stalks - Experimental studies - Fast pyrolysis - Fluidized bed - Gas chromatography-mass spectrometries - Qualitative analysis - Reaction temperatures - Two layers
Classification code: 943.3 Special Purpose Instruments - 802.2 Chemical Reactions - 802.3 Chemical Operations - 805.1.1 Biochemical Engineering - 821.5 Agricultural Wastes - 913.3 Quality Assurance and Control - 931.1 Mechanics - 802.1 Chemical Plants and Equipment - 642.2 Industrial Furnaces and Components - 631.1 Fluid Flow, General - 525.1 Energy Resources and Renewable Energy Issues - 521.2 Combustors - 461.2 Biological Materials and Tissue Engineering - 801 Chemistry
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
81. Accession number: 20091512023340
Title: Model for evaluating paddy rice quality based on principal component analysis of its mechanical indexes
Authors: Zhang, Hongxia1
Author affiliation: 1 College of Engineering, Heilongjiang August First Land Reclamation University, Daqing 163319, China
Corresponding author: Zhang, H. (swzhxdd@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to overcome every malpractice of the previous methods for appraising paddy rice quality, based on paddy rice mechanics rheological indexes, this paper, embarking from the sample correlation matrix, analyzes fourteen main mechanical characters of seven varieties of paddy rice by the principal component analysis method. According to more than 91.1% of the cumulative variance proportion, three new independent indexes were established, which were related to the quality of paddy rice. Principal component z1, rigidity factor; principal component z2, elasticity factor; principal component z3, viscidity factor, the principal component values of varieties were obtained. Paddy rice could be classified depending on the principal component values, and the results were similar to the classified results depending on taste quality. The results of correlation analysis between the principal component and the taste quality of paddy rice show that, PRIN1 has a closely positive correlation with the taste quality, and PRIN2 has a positive correlation with the taste quality. Regression equation between taste quality and principal component was developed by using Stepwise Regression, which could be used to predict and evaluate quality of paddy rice.
Number of references: 17
Main heading: Principal component analysis
Controlled terms: Grain (agricultural product) - Quality control
Uncontrolled terms: Correlation analysis - Correlation matrices - Mechanical characters - Mechanical indexes - Paddy rice - Positive correlations - Quality evaluation model - Regression equations - Step-wise regressions - Taste quality value
Classification code: 821.4 Agricultural Products - 913.3 Quality Assurance and Control - 922.2 Mathematical Statistics
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
82. Accession number: 20091512023287
Title: Pilot test on semi-solid-state pure-fermentation technology of low-salt pickled cucumber
Authors: Wu, Jinhai1, 2 ; Wang, Changlu1 ; Wang, Yurong1 ; Chen, Mianhua1 ; Chen, Zhiqiang1 ; Sui, Zhiwen1
Author affiliation: 1 College of Bioengineering, Tianjin University of Science and Technology, Tianjin 300457, China
2 College of Engineering, Shanxi Normal University, Linfen 041004, China
Corresponding author: Wang, C. (changluwang@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: For industrially producing traditional artificial pickled vegetables and reducing the environment pollution from the pickling liquid, the continuous useful method of pickling liquid was studied in the semi-solid-state pure-fermentation technology for low salt pickled cucumber (Cucumis Sativus L.). Pre-dehydrated cucumber with water content of 65%~70% was fermented continuously with low-salt in anaerobic fermentation equipment. For realizing reuse of brine, brine was used as ferment to process pre-fermentation combining with pure culture of lactic aid bacteria. The results showed that the ratio 18:6:2:1 of raw materials, brine, 108 cfu/mL starter and 4% salt solution was optimized condition to reuse brine and 2.24% low-salt product was obtained. The texture of products was not significantly influenced (p > 0.01) by stirring under lower intensity (< 100 r/min), and textural hardness was kept above 1209.1 N. Yield rate was up to 115.8%. The content of Vitamin E, total ascorbic acid, protein, fat, and dietary fiber was improved via comparing with traditional technology, reaching to 3.592%, 0.601 × 10-2 mg/g, 7.843 × 10-2 mg/g, 1.991% and 0.375% respectively.
Number of references: 26
Main heading: Canning
Controlled terms: Biochemical engineering - Brines - Fermentation - Ketones - Liquids - Organic acids - Pickling - Salts - Technology - Water content
Uncontrolled terms: Anaerobic fermentations - Ascorbic acids - Cucumber - Cucumis sativus - Dietary fibers - Environment pollutions - Low-salts - Optimized conditions - Pilot tests - Processing technology - Pure cultures - Salt solutions - Semi-solid-state pure-fermentation - Vitamin-E - Yield rates
Classification code: 901 Engineering Profession - 822.2 Food Processing Operations - 805.1.1 Biochemical Engineering - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 931.2 Physical Properties of Gases, Liquids and Solids - 802.3 Chemical Operations - 801.2 Biochemistry - 539 Metals Corrosion and Protection; Metal Plating - 461.8 Biotechnology - 444 Water Resources - 802.2 Chemical Reactions
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
83. Accession number: 20091512023245
Title: Experimental investigation on instrument for auto-sampling water from runoff and sediment in a small catchment
Authors: Cao, Jiansheng1, 2 ; Zhang, Wanjun1
Author affiliation: 1 Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China
2 Graduate School, Chinese Academy of Sciences, Beijing 100049, China
Corresponding author: Cao, J. (caojs@sjziam.ac.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Instrument has become one of the key technologies for promoting the development of science and economy on the ground that instrument plays a very important role in collecting, monitoring, managing and controlling information. A weir is often used for measuring the runoff yield of a basin in hydrology process and soil erosion. In this study, in order to auto-monitor the sediment concentration in runoff flow, a self-designed instrument was introduced which was used for auto-sampling water from the storm runoff in a small catchment. The reliability and applicability of the instrument was validated by the simulation experiment, and the average relative error was only 0.42%. In addition, compared with traditional water sampling instruments, the self-designed instrument has a higher level of automation, is more convenient and suitable for auto-sampling water from runoff in fieldwork with unattended operation. Therefore, the self-designed instrument for auto-sampling water from storm runoff has a good application prospect.
Number of references: 8
Main heading: Runoff
Controlled terms: Catchments - Erosion - Hydroelectric power - Instruments - Monitoring - Sedimentology - Soil surveys - Soils - Water
Uncontrolled terms: Application prospects - Automatic monitoring and measurement - Average relative errors - Distribution - Experimental investigations - Key technologies - Runoff yields - Sediment concentration - Simulation experiments - Small catchments - Soil erosion - Storm runoffs - Water samplings
Classification code: 539.1 Metals Corrosion - 611.1 Hydroelectric Power Plants - 804.2 Inorganic Compounds - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 483.1 Soils and Soil Mechanics - 406.2 Roads and Streets - 407 Maritime and Port Structures; Rivers and Other Waterways - 442.1 Flood Control - 444 Water Resources - 444.1 Surface Water - 481.1 Geology - 483 Soil Mechanics and Foundations
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
84. Accession number: 20091512023349
Title: Effect of high pressure carbon dioxide treatment on the shelf life of orange juice
Authors: Diao, Enjie1 ; Li, Xiangyang1
Author affiliation: 1 College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
Corresponding author: Diao, E. (dej110@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to study the effect of high pressure carbon dioxide treatment on the shelf life of orange juice, the prepared orange juice was subjected to high pressure carbon dioxide treatment (60 MPa for 9 min at
Number of references: 18
Main heading: Organic polymers
Controlled terms: Carbon dioxide - Fruit juices - High pressure effects - Ketones - Opacity - Organic acids - Polysaccharides - Sterilization (cleaning) - Superconducting materials
Uncontrolled terms: Ascorbic acids - Color changes - Color values - Effect of high pressures - High-pressure carbon dioxides - Non-thermal sterilization - Orange juice - Shelf life - Storage - Vitamin-C
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 822.3 Food Products - 822.2 Food Processing Operations - 815.1.1 Organic Polymers - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 802.3 Chemical Operations - 741.1 Light/Optics - 708.3 Superconducting Materials - 644.2 Refrigerants - 462.1 Biomedical Equipment, General
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
85. Accession number: 20091512023273
Title: Optimized technology for aerobic fermentation of dairy manure to produce bioorganic fertilizer by inoculating compound microbes
Authors: Cao, Huiling1 ; Wang, Qi2 ; Hu, Qingping1 ; Chen, Wuling1
Author affiliation: 1 College of Life Sciences, Northwest University, Xi'an 710069, China
2 Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
Corresponding author: Chen, W. (qqxwang@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: An aerobic fermentation test was conducted using dairy manure and cereal husk to study the optimal fermenting technical conditions. Firstly, single factor experiment was conducted on inoculation quantity of complex microbial community, moisture content, ratio of carbon to nitrogen (C/N) and dig frequency. And then, the optimal fermenting conditions were obtained through orthogonal experiments. Secondly, the complex microbial community which contained nitrogen fixation microorganism, phosphate solubilizing microorganism and potassium dissolving microorganism, were appended in the second fermentation with inoculation quantity of 1% after 15-day main fermentation. The termination time of the second fermentation was determined by measuring the quantity variations of beneficial microorganisms. The results indicated that the optimal conditions of the main fermentation could be as follows: moisture content of 65%, ratio of carbon to nitrogen of 30:1, inoculation quantity of 3.5‰ and dig frequency of one time every four days. The main and second fermentation took 15 days and 6 days respectively. Results under the optimal fermenting conditions are as follows: materials can warm up fast and maintain a long period at a high temperature; the bioorganic fertilizer has a high degree of maturity and a short fermentation cycle; the number of effective bacteria and germination index amounts to 5.2 × 109 cfu/g and 96.8%, respectively.
Number of references: 15
Main heading: Fertilizers
Controlled terms: Bacteria - Biochemical engineering - Dissolution - Fermentation - Manures - Moisture - Moisture determination - Nitrogen - Nitrogen fixation - Optimization - Potassium
Uncontrolled terms: Aerobic fermentation - Bioorganic fertilizers - Complex microbial community - Dairy manures - Germination indices - High temperatures - Moisture contents - Optimal conditions - Orthogonal experiments - Technical conditions - Termination time
Classification code: 802.3 Chemical Operations - 804 Chemical Products Generally - 805.1.1 Biochemical Engineering - 821.2 Agricultural Chemicals - 821.5 Agricultural Wastes - 921.5 Optimization Techniques - 944.2 Moisture Measurements - 802.2 Chemical Reactions - 443.1 Atmospheric Properties - 452.3 Industrial Wastes - 461.8 Biotechnology - 461.9 Biology - 549.1 Alkali Metals - 801.2 Biochemistry - 801.4 Physical Chemistry
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
86. Accession number: 20091512023346
Title: Optimization of the alkaline extraction of silkworm (Bombyx mori L.) pupae protein
Authors: Sun, Yan1 ; Ren, Fazheng1 ; Fan, Jinbo1 ; Wu, Lipin1
Author affiliation: 1 The Key Laboratory of Functional Dairy of Ministry of Education and Beijing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Ren, F. (renfazheng@263.net)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Optimization of the extraction of silkworm (Bombyx mori L.) pupae protein was investigated using response surface methodology and central composite design. The influences of the variables of protein extraction processes were studied and the regression equation of protein extraction rate was established. Protein extraction rate was primarily affected by alkali concentration and liquid/solid ratio(P < 0.05), and was remarkably improved to 78.69% under the optimum conditions, when alkali concentration, liquid/solid ratio, temperature and NaCl concentration were 1.03%, 70:1,
Number of references: 20
Main heading: Amino acids
Controlled terms: Amination - Amines - Organic acids - Proteins - Sodium chloride - Surface properties
Uncontrolled terms: Alkaline extraction - Central composite design - Extraction rate - Response surface methodology - Silkworm pupae proteins
Classification code: 951 Materials Science - 931.2 Physical Properties of Gases, Liquids and Solids - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 802.2 Chemical Reactions - 482.2 Minerals - 461 Bioengineering and Biology
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
87. Accession number: 20091512023328
Title: Removal and process of heavy metals in sludge by microbiological leaching for agricultural use
Authors: Cao, Zhanping1 ; Zhang, Jingli2
Author affiliation: 1 Key Laboratory of Hollow Fiber Membrane Material and Membrane Process, Tianjin Polytechnic University, Tianjin 300160, China
2 Department of Environmental and Municipal Engineering, Tianjin Institute of Urban Construction, Tianjin 300384, China
Corresponding author: Cao, Z. (czp1@tom.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The high concentration of heavy metals in wastewater sludge has limited the application of the sludge on agricultural land. Under the circumstances of high Cu content in the sludge from wastewater treatment plants in Tianjin City, the microbiological leaching experiments using ferrous sulfate and sulfur powder as the culture respectively, were performed. The results showed that Cu could be removed more efficiently using ferrous sulfate as the culture than that using sulfur powder. Using the ferrous sulfate as the culture, the effects of the dose of ferrous sulfate, sludge-inoculation ratio, pH and temperature on the removal of heavy metals were investigated. The removal efficiencies of Cu, Pb, Cr, Ni, Zn and Cd were 89%, 38%, 61%, 76%, 72% and 57%, respectively, and the corresponding residual contents in sludge were 116 mg/kg, 62.5 mg/kg, 98 mg/kg, 22 mg/kg, 174 mg/kg and 1.1 mg/kg, respectively, with
Number of references: 18
Main heading: Sludge disposal
Controlled terms: Chromium - Land use - Leaching - Lead - Metal recovery - Metals - pH effects - Powder metals - Removal - Sulfur - Wastewater - Wastewater disposal - Wastewater reclamation - Wastewater treatment - Water treatment plants - Zinc
Uncontrolled terms: Agricultural lands - Agricultural use - Batch experiments - Control standards - Cu contents - Ferrous sulfates - High concentrations - Leaching experiments - Leaching time - Microbiological leaching - Removal efficiencies - Residual contents - Sulfur powders - Thiobacillus ferrooxidans - Tianjin - Waste water treatment plants - Wastewater sludges
Classification code: 804 Chemical Products Generally - 531 Metallurgy and Metallography - 533.1 Ore Treatment - 536 Powder Metallurgy - 543.1 Chromium and Alloys - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 801.1 Chemistry, General - 802.3 Chemical Operations - 454.2 Environmental Impact and Protection - 402.1 Industrial and Agricultural Buildings - 403 Urban and Regional Planning and Development - 442.2 Land Reclamation - 452.4 Industrial Wastes Treatment and Disposal - 445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 452.3 Industrial Wastes - 446.1 Water Supply Systems
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
88. Accession number: 20091512023238
Title: Prediction of farmland water environment after reconstruction of water-saving in the large-scale irrigation district based on the ANN technology
Authors: Chen, Yaxin1 ; Qu, Zhongyi1 ; Gao, Zhanyi2
Author affiliation: 1 Institute of Water Resources and Water and Soil Engineering, Inner Mongolia Agriculture University, Huhhot 010018, China
2 National Center of Efficient Irrigation and Technology Research-Beijing (NCEI), China Institute of Water Resources and Hydropower Research, Beijing 010018, China
Corresponding author: Qu, Z. (quzhongyi68@sohu.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to investigate the change of regional farmland water environment and its possible negative effect caused by reconstruction of water-saving in the large-scale irrigation district, the Hetao irrigation district of Inner Mongolia in the Yellow River valley for a study case was selected. Through the monitoring data of regional water and salt movement and analysis of data of many years' hydrology and groundwater in the three different scale research areas, the ANN technology (BP model and RBF model) was applied for prediction of farmland groundwater hydrology and soil water and salt movement in the three different scale research areas. Then, the movement trend of groundwater hydrology and soil water and salt contents were predicted in the Hetao Irrigation District in future different water-saving level years. Furthermore, the results of ANN model were compared with those of finite element method and hydrological budget method. As a result, the predicted results were rational and accordant. At the same time, the ANN method showed more advantage comparing with traditional method. This indicates that the ANN technology expresses prominent advantage in the prediction for the complicated system and can obtain better results. So, the ANN is suitable for regional trend estimation in the future when the influence factors are changed. Furthermore, this paper brings forward a moderate environment safety threshold about water-saving of irrigation district in the arid and soil salinization irrigation areas. This can provide instructions for macro-management and decision of reconstruction of water-saving project in the large-scale irrigation district.
Number of references: 17
Main heading: Water analysis
Controlled terms: Backpropagation - Earth sciences - Farms - Geologic models - Groundwater - Hydrogeology - Irrigation - Restoration - Soil moisture - Technology - Underground reservoirs - Underwater soils - Water conservation
Uncontrolled terms: ANN technology - Farmland water environment - Large-scale irrigation district - Prediction - Reconstruction of water-saving project
Classification code: 481 Geology and Geophysics - 481.1 Geology - 483.1 Soils and Soil Mechanics - 723.4 Artificial Intelligence - 801 Chemistry - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 901 Engineering Profession - 913.5 Maintenance - 471.1 Oceanography, General - 402 Buildings and Towers - 403.1 Urban Planning and Development - 409 Civil Engineering, General - 441.2 Reservoirs - 443 Meteorology - 444 Water Resources - 444.2 Groundwater - 445.2 Water Analysis - 471 Marine Science and Oceanography
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
89. Accession number: 20091512023320
Title: Linear mixture modeling applied to remote sensing monitoring of winter wheat areas
Authors: Wu, Yongli1 ; Wang, Yunfeng1 ; Zhang, Jianxin2 ; Luan, Qing1
Author affiliation: 1 Shanxi Climate Center, Taiyuan 030006, China
2 College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
Corresponding author: Wu, Y. (wu_yongli@sina.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Moderate Resolution Imaging Spectroradiometer (MODIS) has advantages in the following aspects: multi-spectra, multi-temporal and freely obtained. Using traditional classification methods, super-classification and vegetation index thresholds, based on MODIS data during the winter wheat regreening stage, the distribution of winter wheat area was investigated in this study. Meanwhile, aiming at the characteristics that most remote sensing pixels are mixed pixels, application of linear mixture modeling to unmixing the planting area of winter wheat was mainly studied. Comparing the precision of different classification methods for the planting area of winter wheat, using linear mixture modeling, the major part (98.45%) of the root-mean-square error is smaller than 0.01, the relative error is approximately 3% compared with the actual winter wheat field data, obviously superior to the precision of traditional remote sensing classification method.
Number of references: 16
Main heading: Grain (agricultural product)
Controlled terms: Atmospherics - Crops - Mixtures - Pixels - Remote sensing - Spectrometers - Vegetation
Uncontrolled terms: Classification methods - Linear mixture modeling - Mixed pixels - Moderate-resolution Imaging Spectroradiometer - MODIS - Multi temporals - Relative errors - Remote sensing classifications - Remote sensing monitoring - Root-mean-square errors - Un-mixing - Vegetation indexes - Winter wheat - Winter wheat fields
Classification code: 941.3 Optical Instruments - 741.3 Optical Devices and Systems - 742.2 Photographic Equipment - 801 Chemistry - 802.3 Chemical Operations - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.4 Agricultural Products - 731.1 Control Systems - 722.2 Computer Peripheral Equipment - 701.1 Electricity: Basic Concepts and Phenomena - 525.1 Energy Resources and Renewable Energy Issues - 461.9 Biology - 443.1 Atmospheric Properties - 723.5 Computer Applications
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
90. Accession number: 20091512023318
Title: Feature extraction for the stored-grain insect detection system based on image recognition technology
Authors: Zhang, Hongtao1, 2 ; Mao, Hanping1 ; Qiu, Daoyin2
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
2 Institute of Electric Power, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China
Corresponding author: Mao, H. (maohp@ujs.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The feature extraction is a very important and difficult part for the stored-grain insect detection system based on image recognition technology. The seventeen morphological features were extracted and normalized from the binary grain-insect images. The ant colony optimization algorithm was applied to the feature extraction of the stored-grain insects, and the recognition accuracy of the z-fold cross-validation training model was acted as an important factor for the evaluation principle of the feature extraction. The algorithm extracted seven features that were composed of the optimal feature space from the 17 morphological features, such as area and perimeter. Finally, the nine species of the stored-grain insects were recognized by the support vector machine classifier, and the correct identification ratio was over 95%. The experimental results show that the feature extraction of the stored-grain insect based on ant colony optimization algorithm is practical and feasible.
Number of references: 10
Main heading: Feature extraction
Controlled terms: Algorithms - Electric load forecasting - Image processing - Image recognition - Image retrieval - Optimization - Support vector machines
Uncontrolled terms: Ant colony optimization algorithm - Cross validations - Feature spaces - Image recognition technologies - Insect detections - Insect images - Morphological features - Recognition accuracies - Stored-grain insect - Support vector machine - Training models
Classification code: 921 Mathematics - 751.1 Acoustic Waves - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 921.5 Optimization Techniques - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 716 Telecommunication; Radar, Radio and Television - 706.1 Electric Power Systems - 723.2 Data Processing and Image Processing
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
91. Accession number: 20091512023350
Title: Research progress in wheat grain protein content monitoring using remote sensing
Authors: Li, Shaokun1, 2, 3 ; Tan, Haizhen1, 2, 3 ; Wang, Keru1, 2, 3 ; Xiao, Chunhua2, 3 ; Xie, Ruizhi1 ; Gao, Shiju1
Author affiliation: 1 The National Key Facilities for Crop Genetic Resources and Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
2 Key Laboratory of Oasis Ecology Agriculture of Xinjiang Construction Crop, Shihezi 832003, China
3 The Center of Crop High-yield Research, Shihezi 832003, China
Corresponding author: Li, S. (Lishk@mail.caas.net.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Remote sensing technology is an important method that is able to monitor farmland crop quickly and non-destructively. Wheat grain protein content can be predicted at the later growth stages using remote sensing technology and it is a valid path for accurately predicting yield and quality of wheat. In this paper, the evolution method for predicting protein content of wheat is presented first followed by a brief introduction to the wavelengths, spectral parameters, analytical approaches and monitoring directions of remote sensing of wheat grain protein content. An overview of the developments in the monitoring of wheat grain protein content by remote sensing is then given. Finally, the current research highlights, the existing difficulties, the future development trends and the prospect for remote sensing of wheat grain protein content are discussed.
Number of references: 47
Main heading: Grain (agricultural product)
Controlled terms: Grain growth - Remote sensing
Uncontrolled terms: Analytical approaches - Development trends - Grain protein content - Growth stages - Protein contents - Remote sensing technologies - Research progress - Spectral parameters - Wheat - Wheat grains
Classification code: 531.2 Metallography - 731.1 Control Systems - 802.3 Chemical Operations - 821.4 Agricultural Products - 933.1.2 Crystal Growth
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
92. Accession number: 20091512023258
Title: Dropping impact experiment on corn seeds
Authors: Li, Xinping1 ; Ma, Fuli1 ; Gao, Lianxing2
Author affiliation: 1 College of Vehicle and Motive Power Engineering, Henan university of science and Technology, Luoyang 471003, China
2 College of Engineering, Shenyang Agricultural University, Shenyang 110161, China
Corresponding author: Gao, L. (lianxinggao@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to reduce the mechanical damage of corn seeds in the threshing process and master the impact crushing mechanism of corn seeds, the impact crushing experiments on corn seeds of different varieties were conducted using the dropping impact test-bed. The mechanical properties of corn seeds of different moisture contents at different impact locations were analyzed. The experimental results showed that the maximum impact forces of corn seeds were reduced with the increasing of the moisture contents. The maximum impact forces of corn seeds at different impact locations were significantly different. At the same moisture content, the maximum impact force at ventral side of corn seed was the largest, the side of corn seed took the second place, and the force at the top surface of corn seed was the least. At the same impact location, the maximum impact forces of different varieties were different because of the internal structure and shape of corn seed. This research has important meanings for future research on mechanical properties and damage mechanism of corn seeds, and it is also useful for developing directional-feeding threshing.
Number of references: 17
Main heading: Seed
Controlled terms: Agriculture - Crushing - Experiments - Feeding - Location - Mechanical properties - Mechanisms - Moisture - Moisture determination
Uncontrolled terms: Corn seed - Damage mechanisms - Directional-feeding threshing - Dropping impact - Impact experiments - Impact forces - Impact tests - Internal structures - Mechanical damages - Moisture contents - Top surfaces
Classification code: 951 Materials Science - 821.4 Agricultural Products - 901.3 Engineering Research - 911 Cost and Value Engineering; Industrial Economics - 912 Industrial Engineering and Management - 931.1 Mechanics - 944.2 Moisture Measurements - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 801.4 Physical Chemistry - 691.2 Materials Handling Methods - 601.3 Mechanisms - 533.1 Ore Treatment - 443.1 Atmospheric Properties - 802.3 Chemical Operations
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
93. Accession number: 20091512023306
Title: Dynamic changes of soil erodibility during process of land degradation and restoration
Authors: Zhu, Bingbing1 ; Li, Zhanbin1, 2 ; Li, Peng1 ; Shen, Zhongyuan1 ; Lu, Jinwei2
Author affiliation: 1 Key Lab of Northwest Water Resources and Environment Ecology of Ministry of Education, Xi'an University of Technology, Xi'an 710048, China
2 State Key Laboratory of Soil Erosion and Dry land Farming on Loess Plateau, Yangling 712100, China
Corresponding author: Zhu, B. (zbb1026@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The values of soil erodibility K under different degradation and restoration periods were calculated by the EPIC model and the dynamic changes of soil erodibility during the process of land degradation and restoration were systematically studied. The results showed that after cultivated, soil particles developed towards coarseness and organic matter contents was decreased, while during the periods of restoration, soil erodibility was decreased with the increasing of SOM gradually. K values were closely correlated with soil phy-chemical properties, among which the organic matter content determined its erodibility fundamentally. Thus vegetation recovery and rehabilitation to improve the organic matter and promote formation of aggregates and their stability are principal countermeasures to reduce soil erodibility for the Loess Plateau.
Number of references: 33
Main heading: Geologic models
Controlled terms: Biogeochemistry - Biological materials - Degradation - Metal analysis - Organic compounds - Restoration - Soils
Uncontrolled terms: Dynamic changes - Epic models - Erodibility - K values - Land degradation - Land restoration - Loess plateaux - Organic matter contents - Organic matters - Restoration periods - Soil erodibility - Soil particles - Vegetation recoveries
Classification code: 804.1 Organic Compounds - 802.2 Chemical Reactions - 801.2 Biochemistry - 801 Chemistry - 531 Metallurgy and Metallography - 913.5 Maintenance - 483.1 Soils and Soil Mechanics - 481.1 Geology - 461.2 Biological Materials and Tissue Engineering - 409 Civil Engineering, General - 402 Buildings and Towers - 481.2 Geochemistry
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
94. Accession number: 20091512023291
Title: Separation and antioxidant properties of anti-lipid peroxidation fraction from Toona sinensis leaves
Authors: Zhang, Jingfang1 ; Wang, Dongmei1 ; Zhang, Qiang1
Author affiliation: 1 College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100, China
Corresponding author: Zhang, J. (z_jf008@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to search for a natural antioxidant applicable for oil, fraction with anti-lipid peroxidation (FTAP) was purified from Toona sinensis leaf extracts. Effects of pH value, heat treatment and storage time on the antioxidant activity of FTAP were investigated. The suitability of FTAP as an antioxidant in lard and vegetable oil was examined. Antioxidant activity was evaluated using linoleic acid peroxidation method. Macroporous resin was used for purifying FTAP. Content of flavonoids in FTAP was assayed with spectrophotometric method. Inhibition for linoleic acid peroxidation was emplied for monitoring antioxidation of FTAP at different pH values, heat treatment and storage duration. Peroxidation value was used as a criterion to assay antioxidant activity of FTAP in oil. LSA-10 was considered as optimal macroporous resin for FTAP. Anti-lipid peroxidation of FTAP could be correlated with content of flavonoids. The antioxidant activity of FTAP was maximum at pH 7 or pH 4 and remained unchanged at
Number of references: 23
Main heading: pH effects
Controlled terms: Acids - Fatty acids - Heat treating furnaces - Heat treatment - Lubricating oils - Oxidation - Oxidation resistance - Oxidative stress - Peroxides - Resins - Separation - Spectrophotometers - Spectrophotometry - Vegetable oils
Uncontrolled terms: Anti oxidations - Anti-lipid peroxides - Anti-oxidant properties - Antioxidant activities - Butylated hydroxytoluene - Dose-dependent manners - Flavonoids - Leaf extracts - Linoleic acids - Lipid peroxidation - Macroporous resins - Natural antioxidants - Peroxidation - pH values - Potential sources - Spectro-photometric methods - Storage time - Toona sinensis leaves - Vegetable oil
Classification code: 941.3 Optical Instruments - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 815.1.1 Organic Polymers - 822.3 Food Products - 941 Acoustical and Optical Measuring Instruments - 802.2 Chemical Reactions - 461.9 Biology - 532.4 Heat Treating Furnaces - 537.1 Heat Treatment Processes - 801.1 Chemistry, General - 539.1 Metals Corrosion - 741.3 Optical Devices and Systems - 801 Chemistry - 607.1 Lubricants
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
95. Accession number: 20091512023256
Title: Experimental study on improving deposition rate using PWM-based intermittent spray from enlarged nozzle
Authors: Deng, Wei1 ; He, Xiongkui1 ; Ding, Weimin2
Author affiliation: 1 College of Science, China Agricultural University, Beijing 100193, China
2 College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author: Ding, W. (wmding@njau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to obtain appropriate small spray droplet size spectra and increase spray droplet velocity, so as to improve pesticide spray deposition rate, a method to improve spray deposition rate using PWM-based (pulse width modulation, PWM) intermittent variable spray technology was discussed. Through four groups of comparative tests, the effects of three kinds of flow-rate control methods on spray droplet sizes and velocity were compared. The three flow-rate control methods are: 1)spray flow-rate control by changing pressure, 2)spray flow-rate control by PWM-based intermittent variable spray, and 3)spray flow-rate control by combining PWM-based intermittent variable spray, variety of nozzle size, and change of pressure. The study results show that not only can the flow-rate be controlled, but also suitable smaller droplet diameter spectra can be obtained and spray droplet velocity can be increased through adjusting spray duty cycle, spray pressure, and nozzle size using the method of PWM-based intermittent spray from enlarged nozzles operated at increased liquid pressure. Therefore, spray deposition rate could be improved.
Number of references: 17
Main heading: Pulse width modulation
Controlled terms: Counting circuits - Deposition - Deposition rates - Drop formation - Image coding - Nozzles - Pesticides - Pulse modulation - Velocity
Uncontrolled terms: Intermittent spray - Pesticide spray - Pulse width modulation (PWM) - Spray droplet diameter - Spray droplet velocity
Classification code: 741 Light, Optics and Optical Devices - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 813.1 Coating Techniques - 821.2 Agricultural Chemicals - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 723.2 Data Processing and Image Processing - 539.1 Metals Corrosion - 539.3 Metal Plating - 617 Turbines and Steam Turbines - 621.1 Fission Reactors - 631.1 Fluid Flow, General - 713.4 Pulse Circuits - 716 Telecommunication; Radar, Radio and Television
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
96. Accession number: 20091512023240
Title: Spatio-temporal changes of wetness index in China from 1975 to 2004
Authors: Shen, Shuanghe1 ; Zhang, Fangmin1 ; Sheng, Qiong2
Author affiliation: 1 College of Applied Meteorology, Nanjing University of Informat Science and Technology, Nanjing 210044, China
2 Huzhou Meteorological Bureau, Huzhou 313000, China
Corresponding author: Zhang, F. (zhangyuanyuanson@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Through research on variation of wetness index over a long term, it can be under stood how the dry-humid condition has changed under global warming, to make a better assessment on agroclimatic resources and rational agroclimatic zoning. Reference crop evapotranspiration (ET0) and new wetness index (w) were both calculated and analyzed according to Penman-Monteith scheme recommended by FAO with routine meteorological data from 616 weather stations in China from 1975 to 2004. In terms of grades of wetness index from Chinese Climate Classification Criterion, China is classified into severe arid, arid, semi-arid, semi-humid and humid zones, respectively, which are compared with the demarcations from rainfall-based indices in order to reveal the similarity and difference in association with the two schemes under current global climate warming. Besides, the spatio-temporal analysis of climate wetness over the country in the past thirty years was performed. The results show that the total ET
Number of references: 22
Main heading: Water supply
Controlled terms: Crops - Evapotranspiration - Global warming - Land use
Uncontrolled terms: Classification criterions - Coefficient of variation - Dry regions - Global climate warming - Humid conditions - Humid zones - Long terms - Meteorological datum - Northeast regions - Penman monteiths - Penman-Monteith equation - Reference crop evapotranspiration - Semi-arid - Spatio-temporal analysis - Spatio-temporal changes - Weather stations - Wetness index
Classification code: 802.3 Chemical Operations - 451 Air Pollution - 446.1 Water Supply Systems - 821.4 Agricultural Products - 444.1 Surface Water - 442.2 Land Reclamation - 403 Urban and Regional Planning and Development - 443.1 Atmospheric Properties
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
97. Accession number: 20091512023286
Title: Effect of ion sputtering platinum on photocatalytic degradation of ethylene in the environment of cold storage
Authors: Ye, Shengying1 ; Ai, Guangjian1 ; Song, Xianliang1 ; Luo, Shucan1 ; Li, Mingbo1
Author affiliation: 1 College of Food Science, South China Agricultural University, Guangzhou 510642, China
Corresponding author: Ye, S. (yesy@scau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to investigate the effect of nano-platinum (Pt) on photocatalytic degradation of ethylene in the environment of cold storage by TiO2 anchored on activated carbon fibers (TiO2/ACF). The TiO2/ACF deposited Pt (TiO2/ACF-Pt) by a vacuum ion sputter in two different sputtering ways were prepared. Effects of TiO2/ACF-Pt prepared in different sputtering ways and time on the photocatalytic degradation rate of ethylene were investigated in the simulated cold storage environment for horticultural products. Environmental Scanning Electron Microscope (ESEM), Field Scanning Electron Microscope (FESEM) and X-ray Photoelectron Spectroscope (XPS) were used to analyze the prepared TiO2/ACF-Pt. Results showed that the kinetics of photocatalytic degradation of ethylene by TiO2/ACF desoposited Pt in the simulated cold storage environment for horticultural products could be described using the pseudo first-order equation. The prepared TiO2/ACF-Pt, in the process of which Pt was initially deposited on the surface of ACF and then TiO2 was coated, would promote the activity of ethylene decomposing. When ion sputtering time was 60 seconds (Pt/Ti atomic concentration ratio was 0.112), the apparent rate constant of the reaction of TiO2/ACF-Pt was 1.16 times as much as that of TiO2/ACF. The micrographic structure of ACF was not damaged and an excessive porous structure, which was contributive to absorbing the diluted ethylene, was obtained by the way of ion sputtering Pt.
Number of references: 16
Main heading: Activated carbon
Controlled terms: Carbon fibers - Charcoal - Cold storage - Degradation - Electrodeposition - Ethylene - Ions - Microscopes - Nanoparticles - Photocatalysis - Photodegradation - Platinum - Rate constants - Refrigerators - Scanning - Scanning electron microscopy - Sputtering - Titanium - Titanium oxides
Uncontrolled terms: Activated carbon fibers - Apparent rate constants - Atomic concentrations - Environmental scanning electron microscopes - First-order equations - Horticultural products - Ion sputtering - Photo-catalytic degradations - Porous structures - Scanning electron microscopes - X-ray photoelectron spectroscopes - Xps
Classification code: 933 Solid State Physics - 801 Chemistry - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 811.2 Wood and Wood Products - 813.1 Coating Techniques - 817.1 Polymer Products - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics - 761 Nanotechnology - 524 Solid Fuels - 539.3 Metal Plating - 539.3.1 Electroplating - 542.3 Titanium and Alloys - 547.1 Precious Metals - 741.3 Optical Devices and Systems - 644.3 Refrigeration Equipment and Components - 701.1 Electricity: Basic Concepts and Phenomena - 708 Electric and Magnetic Materials - 712.2 Thermionic Materials - 741.1 Light/Optics - 694.4 Storage
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
98. Accession number: 20091512023275
Title: Comparative study on pyrolysis characteristics and dynamics of grass biomass
Authors: Fu, Xufeng1 ; Zhong, Zhaoping1 ; Xiao, Gang1 ; Li, Rui1
Author affiliation: 1 School of Energy and Environment, Southeast University, Nanjing 210096, China
Corresponding author: Zhong, Z. (zzhong@seu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The studies on Miscanthus spp, Phragmites australis, Pennisetum are very rare. But they distribute in a large area on the middle and lower reaches of the Yangtze River in China. These grasses have not fully utilized. In order to develop biomass utilization and provide another way for a better future, in order to provide experimental data for a more rational and efficient use of these grasses, this article mainly made the thermogravimetric annlysis of Miscanthus spp, Phragmites australis, Pennisetum, comparing rice straw. The pyrolysis characteristics were obtained using TG and DTG curves. A pyrolysis index, D, was used to describe the biomass pyrolysis characteristics. And kinetic parameters of biomass were also calculated by thermal analysis mathematic method. The results show that the pyrolysis process of these samples could be separated into four stages. Biomass have a shoulder volatilization peaks at about 563 K. The main weight loss occurs from 460 K to 673 K. The pyrolysis index D is Miscanthus spp gt; rice straw gt; Pennisetum gt; Phragmites australis. The activation energy is Miscanthus spp gt; rice straw gt; Pennisetum gt; Phragmites australis. The char yield is Miscanthus spp gt; Pennisetum gt; rice straw gt; Phragmites australis. Generally speaking, thermal stability of Miscanthus spp is relatively poor, Phragmites australis is relatively stable. The pyrolysis process can be described by second order reaction model,with the method of Coasts-Redfern, the activation energy and frequency factor of different kinds of floristic biomass were attained.
Number of references: 12
Main heading: Thermogravimetric analysis
Controlled terms: Activation energy - Biological materials - Biomass - Chemical reactions - Forestry - Grain (agricultural product) - Pyrolysis - Thermodynamic stability
Uncontrolled terms: Biomass pyrolysis - Biomass utilizations - Char yields - Comparative studies - Experimental datum - Frequency factors - Grass biomass - Kinetics calculation - Mathematic methods - Miscanthus - Phragmites australis - Pyrolysis process - Rice straws - Second-order reactions - Thermal analysis - Thermal stabilities - Weight loss - Yangtze rivers
Classification code: 931.3 Atomic and Molecular Physics - 821.5 Agricultural Wastes - 821.4 Agricultural Products - 821.0 Woodlands and Forestry - 805.1.1 Biochemical Engineering - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 801 Chemistry - 641.1 Thermodynamics - 525.1 Energy Resources and Renewable Energy Issues - 461.2 Biological Materials and Tissue Engineering
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
99. Accession number: 20091512023260
Title: OpenGL-based visual technology for wheat morphology
Authors: Wu, Yanlian1, 2 ; Cao, Weixing1 ; Tang, Liang1 ; Zhu, Yan1 ; Liu, Hui1
Author affiliation: 1 Jiangsu Key Laboratory for Information Agriculture, Nanjing 210095, China
2 College of Information Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author: Cao, W. (caow@njau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Morphology visualization is one of the key technologies for constructing visual plants. Based on the framework of wheat morphology visualization, the 3D geometric modeling technologies of wheat organs were investigated, and the organ geometrical models were developed with characteristic architecture parameters. The model included three submodels: leaf geometry, stem geometry and wheat spike geometry submodels. The NURBS was used to simulate leaf blade and sheath, and stem geometry submodel was developed by a cylinder. The wheat spike geometry submodel was developed by means of assembling a single organ. The spike axis was simulated with a cylinder, and the spikelet was simulated with an ellipsoid and a cylinder. Based on the platform of OpenGL, the 3D morphology of organs was drawn, and the rendering models of color, texture and light were developed. By further integrating the model of topographic structure of wheat plant and the interaction among individual plants, the wheat 3D morphologies at the organ, individual and population levels were visualized on the computer. These results lay a foundation for further development of visual growth system for the wheat plant.
Number of references: 24
Main heading: Grain (agricultural product)
Controlled terms: Computational geometry - Cylinders (shapes) - Morphology - Three dimensional - Visualization
Uncontrolled terms: 3D morphologies - Geometric modeling - Geometrical models - Growth systems - Key technologies - Leaf blades - OpenGL - Population levels - Rendering - Sub-models - Wheat - Wheat plants
Classification code: 951 Materials Science - 931.2 Physical Properties of Gases, Liquids and Solids - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 902.1 Engineering Graphics - 821.4 Agricultural Products - 723.5 Computer Applications - 408.2 Structural Members and Shapes
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
100. Accession number: 20091512023299
Title: Comparative study of crop evapotranspiration measured by Bowen ratio and lysimeter
Authors: Qiang, Xiaoman1, 2 ; Cai, Huanjie1 ; Wang, Jian1
Author affiliation: 1 Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Ministry of Education, Northwest Agriculture and Forestry University, Yangling 712100, China
2 Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China
Corresponding author: Cai, H. (caihj@nwsuaf.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Crop evapotranspiration provides scientific basis for rational irrigation and water resources allocation. In order to estimate the crop evapotranspiration accurately, two evapotranspiration variables of winter wheat were analyzed. One was estimated by Bowen ratio-energy balance equation (ETb), the other was measured by lysimeter (ETl). The results indicated that the variations of ETb were almost the same as those of ETl. Variations of ETb and ETl were single peak curves. Their values were bigger at noon, and smaller in the morning and evening, and negative at night. The diurnal variation of ETb was smaller than that of ETl Their diurnal variations were weakly negatively correlated with wind speed if the wind speed was small, but if the wind speed was big, the trend that ETl decreases with the increase of wind speed was obvious. The ETb was highly related to net solar radiation, while ETl was not obviously related to net solar radiation. Crop evapotranspiration estimated by Bowen ratio represents the diurnal variation more steadily.
Number of references: 11
Main heading: Water supply
Controlled terms: Crops - Electromagnetic waves - Energy balance - Evapotranspiration - Lysimeters - Resource allocation - Soil surveys - Solar energy - Solar radiation - Speed - Sun - Wind effects
Uncontrolled terms: Bowen ratio-energy balance - Comparative studies - Crop evapotranspirations - Diurnal variations - Energy balance equations - Large scale lysimeters - Single peaks - Wind speed - Winter wheats
Classification code: 943.3 Special Purpose Instruments - 657.2 Extraterrestrial Physics and Stellar Phenomena - 711 Electromagnetic Waves - 802.3 Chemical Operations - 821.4 Agricultural Products - 912.2 Management - 912.3 Operations Research - 931 Classical Physics; Quantum Theory; Relativity - 931.1 Mechanics - 657.1 Solar Energy and Phenomena - 406.2 Roads and Streets - 408.1 Structural Design, General - 443.1 Atmospheric Properties - 631.1 Fluid Flow, General - 444.1 Surface Water - 483.1 Soils and Soil Mechanics - 615.2 Solar Power - 446.1 Water Supply Systems
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
101. Accession number: 20091512023295
Title: Research development of grain damage during threshing
Authors: Xu, Lizhang1, 2 ; Li, Yaoming1, 2 ; Wang, Xianren1, 2
Author affiliation: 1 Key Lab of Jiangsu Province, Institute of Modern Agricultural Equipment and Technology, Zhenjiang 212013, China
2 Key Lab of Ministry of Education, Jiangsu Urliversity, Zhenjiang 212013, China
Corresponding author: Li, Y. (ymli@ujs.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Mechanical damage are easy to generate during the whole process of harvesting, classification, packaging, transportation, processing, preservation and selling, etc. Damage in threshing while harvesting is one of the most important source. Researches of grain damage during threshing at home and abroad were introduced. Methods about how to detect damage are considered, which include direct observation, colorimetric determination, laser optical reflection, image processing, pattern recognition, machine vision and MRI, and damage quantization are also explored. Finally, analysis are made on grain damage during threshing in China.
Number of references: 32
Main heading: Damage detection
Controlled terms: Computer vision - Harvesting - Optical data processing
Uncontrolled terms: Classification , - Colorimetric determinations - Development - Direct observations - Grain - Grain damages - Machine visions - Mechanical damages - Optical reflections - Research development - Threshing - Whole process
Classification code: 741.3 Optical Devices and Systems - 741.2 Vision - 731.6 Robot Applications - 821.3 Agricultural Methods - 723.5 Computer Applications - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 723.2 Data Processing and Image Processing
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
102. Accession number: 20091512026366
Title: Thermodynamic analysis and experimental study of a semi-closed heat pump drying system
Authors: Xiang, Fei1 ; Wang, Li1 ; Yue, Xianfang1
Author affiliation: 1 School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
Corresponding author: Wang, L. (liwang@me.ustb.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: A type of semi-closed heat pump assisted fluidized bed drying system had been designed based on former grain drying experiments and theoretical researches so as to achieve the vehicle-mounted movable function. A horizontal multi-room fluidized bed was chosen as the drying chamber, and a vapor compression heat pump (R
Number of references: 19
Main heading: Mathematical models
Controlled terms: Atmospheric temperature - Computer simulation - Cooling systems - Curing - Dewatering - Dryers (equipment) - Drying - Experiments - Fluid dynamics - Fluidization - Fluidized bed process - Fluidized beds - Grain (agricultural product) - Heat pump systems - Moisture control - Pumps - Statistical tests - Thermoanalysis - Thermodynamic properties
Uncontrolled terms: Air temperatures - Ambient airs - Co-efficient of performance - Drying chambers - Drying process - Drying systems - Energy savings - Experimental studies - Fluidized bed - Fluidized-bed drying - Fresh airs - Grain drying - Grain kernels - Heat and moisture transfers - Heat pump drying - Maximum values - Model calculations - Model results - Northern chinas - Optimum designs - Performance parameters - Sensible heats - Specific moisture extraction rates - Theoretical researches - Thermo dynamic analysis - Vapor compressions - Weather conditions - Wheat harvests
Classification code: 801 Chemistry - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 802.3 Chemical Operations - 815.1 Polymeric Materials - 944.2 Moisture Measurements - 818.3 Rubber and Elastomer Processing - 901.3 Engineering Research - 921 Mathematics - 922.2 Mathematical Statistics - 931.1 Mechanics - 821.4 Agricultural Products - 731.3 Specific Variables Control - 723.5 Computer Applications - 443.1 Atmospheric Properties - 521.2 Combustors - 533.1 Ore Treatment - 616.1 Heat Exchange Equipment and Components - 618.2 Pumps - 631.1 Fluid Flow, General - 641.1 Thermodynamics - 641.2 Heat Transfer - 642.1 Process Heating - 642.2 Industrial Furnaces and Components
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
103. Accession number: 20091512023308
Title: Development of continuous measurement system for soil resistance
Authors: Zhao, Xin1 ; Luo, Xiwen1 ; Wells, L.G.2
Author affiliation: 1 Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Guangzhou 510642, China
2 Biosystems and Agricultural Engineering, University of Kentucky, Lexington 40546, United States
Corresponding author: Luo, X. (xwluo@scau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: A method is presented to resolve the problem of collecting of soil compaction information in real time for use in farm prescription management in precision agriculture. A continuously measuring soil resistance system was designed and developed. The system included an octagonal sensor, a mechanical part, a soil resistance information collection system, and a steel framework for mounting on a tractor with 3-point hitch. The tractor velocity was
Number of references: 17
Main heading: Soils
Controlled terms: Agriculture - Compaction - Sensors - Soil mechanics - Tractors (agricultural) - Tractors (truck)
Uncontrolled terms: Continuous measurements - In fields - Information collections - Mechanical parts - Octagonal sensor - Precision agricultures - Real time - Resistance indices - Sampling rates - Soil compaction - Soil resistance - Soil tillages - Steel frameworks - Variable depth tillage
Classification code: 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 802.3 Chemical Operations - 801 Chemistry - 821.1 Agricultural Machinery and Equipment - 732.2 Control Instrumentation - 536.1 Powder Metallurgy Operations - 483.1 Soils and Soil Mechanics - 663.1 Heavy Duty Motor Vehicles
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
104. Accession number: 20091512023282
Title: Impacts of productive ratio coefficient on grade of farmland classification
Authors: Kong, Xiangbin1 ; Lin, Jing2 ; Wang, Jian1 ; Li, Qinfen3 ; Sun, Yanwei3
Author affiliation: 1 Department of Land Resource Management, China Agricultural University, Beijing 100193, China
2 Fengtai Land Resource Administration Bureau in Beijing, Beijing 100073, China
3 Shanghai Institute of Geology Survey, Shanghai 200072, China
Corresponding author: Kong, X. (kxb@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The farmland classification precision depends on the PRC(productive ratio coefficient) calculation. According to the standard of the farmland classification method in China, the PRC was calculated by the rate of the base crop yeild maximum and the appointed crop yield maximum, but, for the impacts of the different PRC calculation methods on the farmland classification precision was unknown. The PRC calculation methods' improvement is base of the national farmland classification standard. In the paper, Chongming county in Shangha was taken as a case study, the other five PRC calculation methods except for the standard method were brought out, to show the impacts on the farmland classification precision. The results show that the different PRC can increase or decrease the natural quality grade, utilization grade index on the whole, but, grade spatial distribution orders of the relative farmland were the same. In the same cropping system, the six PRC calculation methods have the same impacts on the farmland classification precision, but the farmland index based on the different PRC has the same agricultural productivity.
Number of references: 5
Main heading: Farms
Controlled terms: Crops - Land use - Planning - Regional planning - Standards
Uncontrolled terms: Classification - Farmland - Natural quality - Productive ratio coefficient - Use classification
Classification code: 912.2 Management - 902.2 Codes and Standards - 821.4 Agricultural Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 442.2 Land Reclamation - 403.2 Regional Planning and Development - 403 Urban and Regional Planning and Development
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
105. Accession number: 20091512023300
Title: Effect of super absorbent polymer on vertical infiltration characteristics of soil water
Authors: Bai, Wenbo1, 2, 3 ; Song, Jiqing1, 2, 3 ; Li, Maosong1, 2, 3 ; Wang, Yafeng4 ; Wu, Yongfeng1, 2, 3 ; Liu, Buchun1, 2, 3 ; Wang, Chunyan1, 2, 3 ; Wang, Xiufen1, 2, 3
Author affiliation: 1 Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
2 Key Laboratory of Agro-Environment and Climate Change, Ministry of Agriculture, Beijing 100081, China
3 Key Laboratory of Dryland Farming and Water-Saving Agriculture, Ministry of Agriculture, Beijing 100081, China
4 Research Center for Eco-environmental Sciences, Chinese Academy Sciences, Beijing 100085, China
Corresponding author: Song, J. (sokise63@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to determine the effects of super absorbent polymer on characteristics and dynamic changes of soil water infiltration, the dynamic changes of infiltration rates, cumulative infiltration, and wetting front of soil water under super absorbent polymer were analyzed through the lab experiments. The results showed that the influences of super absorbent polymer on infiltration rate were stable and consistent. Mixed (0
Number of references: 17
Main heading: Soil mechanics
Controlled terms: Absorption - Applications - Polymers - Ponding - Seepage - Soil moisture - Underwater soils - Water content - Wetting
Uncontrolled terms: Concentration of - Dynamic changes - Infiltration capacities - Infiltration rate - Inhibitory effects - Soil layers - Soil water content - Soil waters - Super absorbent polymer - Vertical infiltrations - Wetting front
Classification code: 815.1 Polymeric Materials - 802.3 Chemical Operations - 483.1 Soils and Soil Mechanics - 471.1 Oceanography, General - 931.2 Physical Properties of Gases, Liquids and Solids - 451.2 Air Pollution Control - 441 Dams and Reservoirs; Hydro Development - 407 Maritime and Port Structures; Rivers and Other Waterways - 402 Buildings and Towers - 444 Water Resources
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
106. Accession number: 20091512023249
Title: CFD simulation and experimental verification of air-velocity distribution of air-assisted orchard sprayer
Authors: Fu, Zetian1 ; Wang, Jun2 ; Qi, Lijun1 ; Wang, Hongtao1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Qi, L. (qilijun@cau.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to investigate the characteristics of air-velocity distribution in the air-velocity field of air-assisted sprayer and effect pattern of various factors, so as to discover its working principle, a simulating model of air-velocity distribution on Hardi LB-255 air-assisted sprayer was developed based on CFD technology. The relative errors of simulated results were confirmed through corresponding experiments on the same condition. Based on the model, the air-velocity distribution pattern and spray mechanism were also obtained. The simulated results show that inlet velocity has little effect on the distribution pattern, but the distance to sprayer center and nozzles has a great effect on it. The nozzles caused velocity fluctuation in simulating filed, but it is good at improving spray quality. Meanwhile, the simulated results were compared with the corresponding experimental data. The results of comparison show that the model can accurately predict air-velocity distribution pattern of LB-255 sprayer.
Number of references: 18
Main heading: Velocity distribution
Controlled terms: Atomizers - Nozzles - Orchards - Pesticides - Velocity - Velocity control
Uncontrolled terms: Air-velocity distribution field - Anti-drifting - CFD simulation - Distribution patterns - Experimental datum - Experimental verifications - Inlet velocities - Pesticide spray - Relative errors - Simulated results - Spray qualities - Velocity fields - Velocity fluctuations - Working principles
Classification code: 943.2 Mechanical Variables Measurements - 931.3 Atomic and Molecular Physics - 931.1 Mechanics - 922.2 Mathematical Statistics - 821.3 Agricultural Methods - 821.2 Agricultural Chemicals - 803 Chemical Agents and Basic Industrial Chemicals - 802.1 Chemical Plants and Equipment - 731.3 Specific Variables Control - 631.1.1 Liquid Dynamics - 631.1 Fluid Flow, General
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
107. Accession number: 20091512023293
Title: Effect of ultrasonic treatment on rapeseed protein enzymolysis
Authors: Ding, Qingzhi1 ; Ma, Haile1, 2 ; Luo, Lin1, 2 ; Mao, Liqin1 ; Jia, Junqiang1 ; Wang, Zhenbin1, 2 ; He, Ronghai1, 2 ; Liu, Bin1
Author affiliation: 1 School of Food and Bioengineering, Jiangsu University, Zhenjiang 212013, China
2 Jiangsu Province Research Center of Bio-process and Separation of Agri-products, Zhenjiang 212013, China
Corresponding author: Ma, H. (mhl@ujs.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Angiotensin-Converting Enzyme Inhibitor (ACEI) peptides were prepared from double-low rapeseed protein by pulsed ultrasonic-assisted enzymolysis. Three reaction models, which included ultrasonic pretreatment of proteinase followed by enzymolysis (UPPE), ultrasonic pretreatment of double-low rapeseed protein solution followed by enzymolysis (UPRPE) and ultrasonic-assisted enzymolysis processes during previous period (UAE), were investigated. The inhibitory activity of hydrolysate to Angiotensin-Converting Enzyme(ACE) was the index. Traditional enzymatic hydrolysis (TE) without ultrasonic treatment was conducted as a control test. Results showed that three models all had significant effects, and UPRPE was the best. The optimum parameters of UPRPE obtained by orthogonal experiments were: ultrasonic frequency 20 kHz, ultrasonic treatment time 30 min, ultrasonic power 1250 W, on-time of the pulse 4 s and off-time 2 s. Compared with the traditional enzymatic hydrolysis, the inhibitory activity of the hydrolysate to ACE increased from 70.83% to 92.97%, ACEI peptide output raised from 29.6% to 41.4% and half inhibiting concentration IC50 value decreased from 3.57 mg/mL to 2.48 mg/mL under the optimum UPRPE conditions. These results prov that the pulsed ultrasonic-assisted enzymatic hydrolysis is a highly efficient method for preparing ACEI peptides from double-low rapeseed protein.
Number of references: 23
Main heading: Enzymatic hydrolysis
Controlled terms: Amines - Enzyme activity - Enzymes - Peptides - Ultrasonic equipment - Ultrasonics
Uncontrolled terms: ACEI peptides - Angiotensin-converting enzymes - Control tests - Double-low rapeseed proteins - Efficient methods - Inhibitory activity - Optimum parameters - Orthogonal experiments - Protein solutions - Reaction models - Three models - Ultrasonic frequencies - Ultrasonic power - Ultrasonic pretreatment - Ultrasonic treatment
Classification code: 804.1 Organic Compounds - 802.2 Chemical Reactions - 801.2 Biochemistry - 753.2 Ultrasonic Devices - 753.1 Ultrasonic Waves - 461.9 Biology - 461.2 Biological Materials and Tissue Engineering
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
108. Accession number: 20091512023330
Title: Effects of ratios of manure and straw, urea and cellulose on biogas yields at different temperatures
Authors: Bai, Jierui1, 2 ; Li, Yibing1, 2 ; Guo, Ouyan2, 3 ; Yang, Gaihe1, 2 ; Ren, Guangxin1, 2 ; Feng, Yongzhong1, 2 ; Li, Yong4
Author affiliation: 1 College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100, China
2 Research Center of Recycle Agricultural Engineering and Technology of Shannxi Province, Yangling 712100, China
3 College of Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China
4 Jintan City Agriculture and Forestry Bureau, Jintan 213200, China
Corresponding author: Li, Y. (liyibing@nwsuaf.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: How to increase biogas yield and improve the utilization efficiency of crop residues and other agricultural wastes is a major problem in modern circular agricultural field. A simulation experiment using self-designed constant-temperature anaerobic fermentation equipment was conducted in indoor conditions. Effects of different ratios of chicken manure to crop residues under different temperature on the gas production were studied. The effect of adding urea and cellulose to biogas digester was also investigated. The crop residues included rice straw, wheat straw and corn straw. Results showed that the biogas production of each treatment rose with the increase of temperature in the range of 20~
Number of references: 18
Main heading: Manures
Controlled terms: Biochemical engineering - Biogas - Cellulose - Crops - Fermentation - Meats - Metabolism - pH effects - Urea - Waste utilization
Uncontrolled terms: Agricultural fields - Anaerobic fermentations - Biogas digesters - Biogas productions - Chicken manures - Constant temperatures - Corn straws - Crop residues - Dry matters - Dynamic changes - Gas productions - Indoor conditions - pH values - Ratio of manure to straw - Rice straws - Simulation experiments - Utilization efficiencies - Wheat straws - Yields
Classification code: 822.3 Food Products - 804.1 Organic Compounds - 805.1.1 Biochemical Engineering - 811.3 Cellulose, Lignin and Derivatives - 815.1.1 Organic Polymers - 821.4 Agricultural Products - 821.5 Agricultural Wastes - 802.2 Chemical Reactions - 801.1 Chemistry, General - 522 Gas Fuels - 461.9 Biology - 461.8 Biotechnology - 452.3 Industrial Wastes - 801.2 Biochemistry
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
109. Accession number: 20091512023250
Title: Numerical simulation of unsteady pressure field in centrifugal pumps
Authors: Shao, Chunlei1 ; Gu, Boqin1 ; Chen, Ye1
Author affiliation: 1 College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009, China
Corresponding author: Shao, C. (jy0321scl@163.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: An unsteady numerical analysis of the entire field is conducted under the design condition for centrifugal pumps with the sliding mesh technology using FLUENT, and the unsteady flow characteristics in the pump were investigated for studying the variation of pressure with the rotating impeller. The results showed that the asymmetrical and unsteady characteristics were obvious. The fluctuation of pressure on the outlet of the centrifugal pump and the inlet of blade had great influence on the performance of the centrifugal pump. On volute middle section S2 and volute outlet section S3, the fluctuation of static pressure was influenced by the relative position of blade and volute tongue, and the fluctuation of dynamic pressure was influenced by the relative position of blade and corresponding section. With the increase of volute radius, the static pressure increased and the dynamic pressure decreased. Along the circumferential direction, with the increase of angle of circumference, the static pressure increases and the dynamic pressure decreased slightly. The results were given as beneficial reference for the research of the internal flow and the reduction of cavitation, vibration and noise of centrifugal pumps.
Number of references: 15
Main heading: Pumps
Controlled terms: Aerodynamics - Centrifugal pumps - Computer simulation - Flow simulation - Fluid dynamics - Hydraulic machinery - Mathematical models - Pumping plants - Unsteady flow
Uncontrolled terms: Circumferential directions - Design conditions - Dynamic pressures - Flow characteristics - Internal flows - Middle sections - Numerical simulation - Pressure field - Relative positions - Rotating impellers - Sliding meshes - Static pressures - Unsteady characteristics - Unsteady pressure fields
Classification code: 931.1 Mechanics - 921 Mathematics - 723.5 Computer Applications - 651.1 Aerodynamics, General - 632.2 Hydraulic Equipment and Machinery - 631.1 Fluid Flow, General - 618.2 Pumps - 446 Waterworks - 402.1 Industrial and Agricultural Buildings
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
110. Accession number: 20091512023266
Title: Specialized database technology for intelligent plant protection machinery
Authors: Zhang, Huichun1 ; Zheng, Jiaqiang1 ; Zhou, Hongping1
Author affiliation: 1 College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China
Corresponding author: Zheng, J. (jqzheng@njfu.edu.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: Traditional plant protection machinery is with poor quality and low efficiency, even affects all ecological system. Intelligent plant protection machinery, which bears the promises of low cost, high efficiency and environment-friendliness, is still at the experimental stage. Based on analyzing the features of intelligent plant protection machinery, the necessity for establishing databases was put forward, and several specialized databases were designed such as the meteorological database, forest pests and diseases management database, plant protection machinery database, chemical application decision making dataset and plant protection machinery decision making dataset. This part of the project provided a case study showing how to prevent and control forestry pests and diseases effectively by using proper climate conditions, proper sciences and technologies.
Number of references: 8
Main heading: Chemical plants
Controlled terms: Agriculture - Applications - Climate control - Decision making - Machinery
Uncontrolled terms: Chemical application - Database - Forest diseases and pests - Intelligent plant protection machinery - Weather condition
Classification code: 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 802.1 Chemical Plants and Equipment - 731.2 Control System Applications - 912.2 Management - 601 Mechanical Design - 402.1 Industrial and Agricultural Buildings - 402 Buildings and Towers - 451.2 Air Pollution Control
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
111. Accession number: 20091512023285
Title: Regulation of high voltage electric field on metabolism of active oxygen species in tomato fruits during storage
Authors: Wang, Yu1 ; Li, Lite2
Author affiliation: 1 College of Food Science and Engineering, Shanxi Agricultural University, Taigu 030801, China
2 College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Wang, Y. (sxtgwy@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to explore the regulatory mechanism of high voltage electric field (HVEF) on ripening and senescence of postharvest fruit, effects of steady electric field (SEF) or alternative electric field (AEF) treatment on metabolism of active oxygen species in harvested tomato fruits were studied. Results showed that AEF treatment could reduce SOD and CAT activities of tomato fruits on initial periods of storage, delay the increase of SOD activity and decrease of CAT activity on later periods of storage. However, SEF could not significantly increase the SOD or CAT activity. Both SEF or AEF treatments delayed the appearance of POD activity peak. Higher levels of AsA and GSH contents were observed in SEF-treated fruits than those in non-SEF and non-AEF treated fruits. During storage, high electric field treatment significantly inhibited the production of H2O2 and O2- in tomato fruits.
Number of references: 24
Main heading: Fruits
Controlled terms: Biochemistry - DC generators - Electric field effects - Electric field measurement - Electricity - Ionization of gases - Laws and legislation - Metabolism - Oxygen
Uncontrolled terms: Active oxygen species - High electric fields - High voltage electric fields - Post harvests - Regulatory mechanisms - Storage - Tomato fruits
Classification code: 971 Social Sciences - 942.2 Electric Variables Measurements - 931.2 Physical Properties of Gases, Liquids and Solids - 902.3 Legal Aspects - 821.4 Agricultural Products - 804 Chemical Products Generally - 802.2 Chemical Reactions - 801.2 Biochemistry - 705.2.2 DC Generators - 701.1 Electricity: Basic Concepts and Phenomena - 461.9 Biology
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
112. Accession number: 20091512023254
Title: System design of machine for measuring bevel drive pinion preloads based on industrial PC
Authors: Wei, Daozhu1 ; Yang, Qin1 ; Gui, Guisheng1 ; Gao, Lei1
Author affiliation: 1 School of Machinery and Automobile Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author: Wei, D. (weidaozhu@126.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: The relation among the bevel drive pinion bearing preloads, axial displacement and locknut screwing moment and the relation between the frictional moments were analyzed in this article. Based on the analysis, the control system of the equipment of automatic assembling bevel drive pinion was developed,which had the function of automatic measuring screwing moment and start-up friction moment. Having industrial PC as control centre and using the software Visual C++ as developmental tool, the control system can have control over the bearing preloads accurately by means of closed-loop real-time measuring screwing moment and start-up friction moment, and the assembling quality and efficiency of bevel drive pinion assembly are improved accordingly.
Number of references: 15
Main heading: Friction
Controlled terms: Bearings (structural) - Computer software - Concurrency control - Machine design - Tribology
Uncontrolled terms: Bearings - Bevel drive pinion assembly - Closed-loop systems - Industrial PC - Preloads - Start-up friction moment
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 931.1 Mechanics - 931 Classical Physics; Quantum Theory; Relativity - 731.3 Specific Variables Control - 723.3 Database Systems - 723 Computer Software, Data Handling and Applications - 601 Mechanical Design - 408.2 Structural Members and Shapes - 401.1 Bridges
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
113. Accession number: 20091512023313
Title: Design and implementation of weighing module for fruit integrative grader
Authors: Li, Guangmei1 ; Wei, Xinhua2 ; Li, Fade1 ; Yan, Shitao1 ; Liu, Guoling3
Author affiliation: 1 College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai'an 271018, China
2 Institute of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
3 Shandong Transport Vocational College (Tai'an), Tai'an 271018, China
Corresponding author: Li, F. (li_fade@yahoo.com.cn)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to satisfy the demand of fruit integrative grading by appearance quality and weight, a weighing module for fruit integrative grader was designed. The theoretical calculation formula of fruit weight was educed with the method of force analysis, and the implementing method of fruit synchronous weighing process was presented. A functional relationship equation between the equivalent mass of the fruit (w) and the A/D conversion result was achieved and calibrated with apples, and it was testified with other apples. The experimental results showed that the weighing module could cooperate with fruit grader in inspecting appearance quality and weight of fruits, and the weighing precision was about 2%.
Number of references: 16
Main heading: Fruits
Controlled terms: Computer vision - Weighing
Uncontrolled terms: A/d conversions - Equivalent mass - Force analysis - Fruit weights - Functional relationships - Machine vision - Synchronous control - Theoretical calculations
Classification code: 723.5 Computer Applications - 731.6 Robot Applications - 741.2 Vision - 821.4 Agricultural Products - 943.3 Special Purpose Instruments
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
114. Accession number: 20091512023279
Title: Variations of pH value, enzyme activity and nitrogen phosphorus content in protected vegetable soils
Authors: Li, Fenru1 ; Yu, Qunying1 ; Zou, Changming1
Author affiliation: 1 Department of Resources and Environmental Sciences, Anhui Science and Technology University, Fengyang 233100, China
Corresponding author: Li, F. (lfrzyf@sohu.com)
Source title: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume: 25
Publication year: 2009
Language: Chinese
ISSN: 10026819
CODEN: NGOXEO
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract: In order to know the basic physical and chemical properties of protected vegetable soils, pH and content of organic matter, nitrogen, phosphorous, enzyme activity in the fluvo-aquic vegetable soil and Heijiang vegetable soils were reported. The results showed that the soil pH value was decreasing at a rate of 0.05-0.06 units per year on average. The fluvo-aquic vegetable soil had been switched from alkaline to neutral soil within 15 years, while the Heijiang vegetable soils had been transformed from neutral to acidic soil. The content of soil organic matter and total nitrogen in vegetable soils was 11.6%~62.8% higher than that of cereal crop soils. NO3-1-N was accumulated in vegetable soils, and the content of nitrate in old vegetable soils was 21.91~49.52 mg/kg and was 13-18 times higher than that in cereal crop soils. Phosphorous especially inorganic phosphorous was accumulated in plow layer. The total P content in 10-year old vegetable soils was 1000 mg/kg higher than that of cereal crop soils. The accumulation rate of P was nearly 100 mg/kg per year. Inorganic P (IP) was accumulated 1335.7 mg/kg in the top soil of 15-year old fluvo-aquic vegetable soil, while organic P was accumulated only 67.9 mg/kg, 20 times less than IP. The content of available P increased with the increase of cultivation years, and in 10-year vegetable soils, the content of available P is above 200 mg/kg, the form and content of IP was varying. The content of Ca8-P and Ca2-P was higher in fluvo-aquic vegetable soils, while Al-P and O-P contents were higher in Heijiang vegetable soils. The content of Ca8-P attained its highest value at 10th year in fluvo-aquic vegetable soil. Enzyme activities of soil urease and alkaline phosphatase were 2 times higher in fluvo-aquic vegetable soils than that in Heijiang vegetable soils. Activities of neutral phosphatase and acidic phosphatase in Heijiang vegetable soils were 4 times higher than that in fluvo-aquic vegetable soils. Catalase activity had nothing to do with soil types. Soil urease, acidic phosphatase, neutral phosphatase and catalase activity in fluvo-aquic vegetable soils were higher than that in cereal crop soils. Soil urease and neutral phosphatase activity in Heijiang vegetable soils were higher than that in cereal crop soil. Soil urease activity was sensitive to vegetable soil age and type. So after a few years of protected cultivation, soil basic properties would change. Measures should be taken to prevent soil acidification, nitrate and phosphorous accumulation.
Number of references: 15
Main heading: Soils
Controlled terms: Aluminum - Biogeochemistry - Calcium - Crops - Enzyme activity