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  2011年第42卷第5期共收录44篇
1. Accession number:20112514082714
 Title:Group use of water and nitrogen on maize under alternative furrow irrigation
Authors:Liu, Xiaogang1, 2 ; Zhang, Fucang2 ; Yang, Qiliang1, 2 ; Wang, Jinfeng2 ; Li, Zhijun2
Author affiliation: 1  Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650024, China
2  Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi 712100, China
 Corresponding author:Zhang, F. (zhangfc@nwsuaf.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:100-105
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The object is to explore an optimal supply model of water and nitrogen on maize under alternative furrow irrigation, the micro-field experiments of rain-shield was conducted about furrow irrigation mode, nitrogen rate and irrigation amount. Results showed that the maize yield of alternative furrow irrigation (AFI), middle water and low nitrogen rate had the maximum grain yield, which was 1.06 times of AFI, high water and high nitrogen rate. Under the same water and nitrogen, the yield of AFI was 1.05 times of normal furrow irrigation (NFI), and 1.16 times of fixed furrow irrigation (FFI). Total nitrogen accumulation (TNA) of AFI was the most, NFI was the second, and FFI was the minimum. The order of effect on TNA was furrow irrigation mode, nitrogen rate and irrigation amount, the influences of irrigation amount on TNA reached significant level.
 Number of references:15
 Main heading:Irrigation
 Controlled terms:Nitrogen  -  Water supply
Uncontrolled terms:Furrow irrigation  -  Maize  -  Nitrogen accumulation  -  Water use efficiency  -  Yield
Classification code:446.1 Water Supply Systems  -  804 Chemical Products Generally  -  821.3 Agricultural Methods
 Database:Compendex

2. Accession number:20112514082713
 Title:Evaporation experiment on different water repellent soils under perforated plastic mulch
 Authors:Chen, Shiping1 ; Li, Yi2 ; Gao, Jinfang3
Author affiliation: 1  Guangxi Wuzhou Design Institute of Water Conservancy and Electric Power, Wuzhou 543002, China
2   Key Laboratory for Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi 712100, China
3  Institute of Water Resources and Civil Engineering, Tibet Agriculture and Animal Husbandry College, Linzhi 860000, China
 Corresponding author:Chen, S. (spenser2@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:86-91
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Three different soil textures, soil water and salt movement characteristics under the different water repellencies and open hole ratios of plastic mulch conditions were studied by evaporation experiment on different water repellent soils under perforated plastic mulch. The results showed that cumulative evaporation was proportional to square root of time on different water repellent soils under perforated plastic mulch; evaporation of soil was inhibited by the soil water repellency; cumulative evaporation per unit hole area film (Er) rapidly decreased when the open hole ratios increased, power function of Er and the open hole ratios were established; variation rate of soil evaporation on vertical profile decreased when soil water repellency increased; the more open holes ratio was, the more variation rate of salt on vertical profile would be, and the degree of soil water repellency had weak effect on soil salt.
 Number of references:16
 Main heading:Evaporation
 Controlled terms:Experiments  -  Phase transitions  -  Soil moisture  -  Waterproofing
Uncontrolled terms:Cumulative evaporation  -  Movement characteristics  -  Open holes  -  Per unit  -  Plastic mulch  -  Power functions  -  Soil textures  -  Soil water  -  Soil water repellency  -  Square roots   -  Transport of soil water and solute  -  Vertical profile  -  Water repellency  -  Water repellent soils
Classification code:483.1 Soils and Soil Mechanics  -  801.4 Physical Chemistry  -  802.3 Chemical Operations  -  901.3 Engineering Research
 Database:Compendex
   
3. Accession number:20112514082712
Title:Dynamic influence of soil water effectiveness on root hydraulic conductivity of Haloxylon ammodendron sapling
 Authors:Yao, Limin1 ; Li, Fusheng2 ; Tong, Ling3 ; Xie, Hengxing1
Author affiliation: 1  Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi 712100, China
                   2  Agricultural College, Guangxi University, Nanning 530005, China
3  Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China
 Corresponding author:Yao, L. (1970ylm@sina.com.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:68-72
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The effects of soil water availability and the days after budbreak on the root hydraulic conductivity in Haloxylon ammodendron sapling with potted plants was quantitatively analyzed. The results showed that the entire root hydraulic conductivity of Haloxylon ammodendron sapling increased linearly with soil water availability and the days after budbreak; the root hydraulic conductivity per unit root surface area of Haloxylon ammodendron sapling increased at first and then decreased according to parabola with soil water availability, and the root hydraulic conductivity per unit root surface area of Haloxylon ammodendron sapling decreased linearly with the days after budbreak. The obtained quantitative relationships between root hydraulic conductivity of Haloxylon ammodendron sapling and soil water availability and the days after budbreak can be applied to the research of root water uptake dynamic models and the research of plant water transfer.
 Number of references:20
 Main heading:Plants (botany)
 Controlled terms:Geologic models  -  Hydraulic conductivity  -  Soil moisture
Uncontrolled terms:Budbreak  -  Haloxylon ammodendron  -  Per unit  -  Plant water  -  Root hydraulic conductivity  -  Root-water uptake  -  Soil water  -  Soil water availability  -  Soil water effectiveness
Classification code:461.9 Biology  -  481.1 Geology  -  483.1 Soils and Soil Mechanics  -  632.1 Hydraulics
 Database:Compendex
   
4. Accession number:20112514082300
 Title:Evaluation of pork freshness using olfaction visualization detection technique
 Authors:Huang, Xingyi1 ; Zhou, Fang1 ; Jiang, Feiyan1
Author affiliation: 1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Huang, X. (h_xingyi@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:142-145 124
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The olfaction visualization detection technique was used to detect the freshness of pork. The images before and after the colorimetric sensor array interacted with pork's volatile flavors were collected, then image processing techniques was used to get digital signals which reflected the characteristics of pork flavors. Those signals were processed by principle components analysis (PCA), and the former 10 principal components were used as inputs of the BP neural networks to distinguish the freshness of pork. Its discrimination rate was 84.62%. The research results show that olfaction visualization detection technique is useful in the rapid evaluation of pock freshness.
 Number of references:8
 Main heading:Meats
Controlled terms:Image processing  -  Neural networks  -  Principal component analysis  -  Sensor arrays  -  Signal detection  -  Visualization
Uncontrolled terms:BP neural networks  -  Colorimetric sensors  -  Detection technique  -  Digital signals  -  Discrimination rates  -  Freshness  -  Image processing technique  -  Olfaction visualization  -  Pork  -  Principal Components   -  Principle components analysis  -  Research results
Classification code:902.1 Engineering Graphics  -  822.3 Food Products  -  741 Light, Optics and Optical Devices  -  922.2 Mathematical Statistics  -  732 Control Devices  -  716.1 Information Theory and Signal Processing  -  716 Telecommunication; Radar, Radio and Television  -  723.4 Artificial Intelligence
 Database:Compendex
   
5. Accession number:20112514082288
 Title:Rapid finalization and mold CAE for manufacture-oriented emitter products
 Authors:Wei, Zhengying1 ; Wu, Songpo1 ; Liu, Xia1 ; Tang, Yiping1 ; Lu, Bingheng1
Author affiliation: 1  State Key Laboratory of Manufacturing System Engineering, Xian Jiaotong University, Xi'an 710049, China
 Corresponding author:Wei, Z. (zywei@mail.xjtu.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:56-62
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Linear regression analysis of the three types of emitter was done, the mathematical model of the volumetric shrinkage and the wall thickness were obtained, the theory for optimization was provided, orthogonal test for investigation of the influence of processing parameter was designed, and the optimal injection molding process parameters were gained. Range analysis and analysis of variance were used to find out the main factors which affected the dimensional accuracy, and a theoretical basis for the production to ensure product dimensional accuracy was provided. According to the complex features of labyrinth emitter mini-channel, rapid prototyping and CNC wire cutting were used to produce precise prototype. With rapid tooling and the technology of rapidly producing, prototype emitter was manufactured. The performance of the product was verified by the hydraulic characteristics and clogging experiments.
 Number of references:10
 Main heading:Injection molding
Controlled terms:Mathematical models  -  Molds  -  Optimization  -  Processing  -  Rapid prototyping  -  Regression analysis  -  Wire
Uncontrolled terms:Dimensional accuracy  -  Emitter  -  Hydraulic characteristic  -  Mini channels  -  Optimal injection  -  Orthogonal test  -  Processing parameters  -  Range analysis  -  Rapid tooling  -  Theoretical basis   -  Volumetric shrinkage  -  Wall thickness  -  Wire cutting
Classification code:922.2 Mathematical Statistics  -  921.5 Optimization Techniques  -  921 Mathematics  -  913.4 Manufacturing  -  816.2 Plants and Machinery for Plastics and Other Polymers  -  816.1 Processing of Plastics and Other Polymers  -  723.5 Computer Applications  -  535.2.1 Metal Forming Machines  -  535.2 Metal Forming
 Database:Compendex
   
6. Accession number:20112514082310
Title:Unfertilized eggs verification system before hatching based on embedded system and machine vision
 Authors:Ma, Xiulian1 ; Yi, Shujuan1
Author affiliation: 1  College of Information and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China
 Corresponding author:Yi, S. (yishujuan_2005@126.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:187-192
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to research the problem of unfertilized eggs verification before hatching, combined the technology of digital image processing and embedded technology, a design scheme of unfertilized eggs filtering system was put forward based on embedded computer. At first, the images of eggs that were collected by using computer vision technology were applied, and then the invariance parameters of image area were extracted, such as circularity, complexity, elongation, globularity, ratio of major to minor axis and average alteration coefficient. At last, identification of unfertilized eggs based on trained genetic algorithm neural network was realized. The test result showed that the system was convenient and easy to realize. Using 600 non-samples of the hatching eggs as verification samples and the result showed the identification rate could reach to 99.3%, satisfied the requirement of eliminating the unfertilized eggs before hatching.
 Number of references:16
 Main heading:Electronic document identification systems
Controlled terms:Computer vision  -  Digital image storage  -  Imaging systems  -  Neural networks  -  Technology
Uncontrolled terms:Computer vision technology  -  Design scheme  -  Embedded computers  -  Embedded technology  -  Filtering systems  -  Identification rates  -  Minor axis  -  Test results  -  Unfertilized eggs verification  -  Verification samples   -  Verification systems
Classification code:723.4 Artificial Intelligence  -  741 Light, Optics and Optical Devices  -  746 Imaging Techniques  -  901 Engineering Profession  -  911.2 Industrial Economics
 Database:Compendex
   
7. Accession number:20112514082311
 Title:Establishment of precision fertilization decision-making model and database system
Authors:Ma, Xiaolei1 ; Fan, Guangbo1 ; Li, Yongyu1 ; Xu, Yang1 ; Peng, Yankun1 ; Tang, Xiuying1
Author affiliation: 1  College of Engineering, China Agricultural University, Beijing 100083, China
 Corresponding author:Li, Y. (yyli@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:193-197
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Northern region wheat and corn were taken as the research main bodies, and the field of Da Xinfeng village in Cuicun Town, Changping District, Beijing was taken as an example, the parameters of precision fertilization decision-making system was researched and corresponding mathematical model was established, the algorithm model and the database were unified, linear regression method to calculate fertilizer needed like N, P, K of soil was used. Two-dimensional interpolation method was applied to calculate unknown point of the region with the test samples in the region, thus soil fertility information database was established. Through the above ways and combined with the soil nutrient, crops type and the target yield and so on, the fertilizer needed of the region was determined, which could provide theory basis for circulation agriculture.
 Number of references:14
 Main heading:Mathematical models
Controlled terms:Database systems  -  Decision making  -  Fertilizers  -  Geologic models  -  Soils
Uncontrolled terms:Algorithm model  -  Database  -  Decision making models  -  Decision models  -  Decision-making systems  -  Information database  -  Linear regression methods  -  Northern regions  -  Precision fertilization  -  Soil fertility   -  Soil nutrients  -  Test samples  -  Two-dimensional interpolation methods
Classification code:481.1 Geology  -  483.1 Soils and Soil Mechanics  -  723.3 Database Systems  -  804 Chemical Products Generally  -  912.2 Management  -  921 Mathematics
 Database:Compendex
   
8. Accession number:20112514082297
Title:Establishment of intelligent distribution system applying in logistics process traceability for agricultural product
Authors:Yang, Xinting1 ; Qian, Jianping1 ; Fan, Beilei1 ; Wu, Xiaoming1 ; Guo, Bin1 ; Zhou, Xiangming1
Author affiliation: 1  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
  Corresponding author:Yang, X. (yangxt@nercita.org.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:125-130
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:For acquiring and supervising the information in logistics process traceability for agricultural product, a traceability model for logistics process was designed and a set of intelligent distribution system with the function of loading automatically, optimal routing, real-time monitoring and intelligent updating was established. The system was composed with distribution information acquisition sub-system on vehicle terminals and agri-products distribution management sub-system on server. Functions of the system were implemented and key technologies were discussed. By testing in an enterprise in Beijing, it is showed that information of logistics process could be acquired quickly and traced accurately by using this system.
 Number of references:16
 Main heading:Information management
 Controlled terms:Agricultural products  -  Geographic information systems
Uncontrolled terms:Distribution management  -  Distribution system  -  Distribution systems  -  Geographic information  -  Information acquisitions  -  Key technologies  -  Logistics process  -  Optimal routing  -  Real time monitoring  -  Sub-systems   -  Traceability  -  Traceability model
 Classification code:723.3 Database Systems  -  821.4 Agricultural Products  -  903.2 Information Dissemination
 Database:Compendex
   
9. Accession number:20112514082292
Title:Effects of salt ions transport on different levels of secondary salinization soil under greenhouse irrigation
 Authors:Li, Wei1 ; Zheng, Zicheng1 ; Li, Tingxuan1 ; Yu, Haiying1 ; Zeng, Li1
Author affiliation: 1  College of Resource and Environment Science, Sichuan Agricultural University, Yaan 625014, China
 Corresponding author:Li, T. (litinx@263.net)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:92-99
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The salt ions distribution at different levels of secondary salinization of greenhouse soil under the same irrigation was investigated through soil columns in lab. The results were as follows: Ca2 and NO3- were showed "double peaks" feature on the distribution profile in the irrigation of 5-15 d. With the increased level of secondary salinization, Ca2 and NO3- were leached more slowly while the return of salt time later. Migration of groundwater on the K had no significant effect. The K ions showed a "single peak" feature on the distribution profile after irrigation. The SO42- was difficult to be leached out of topsoil under all the degree of secondary salinzation. Factors from the environmental perspective, Ca2 in the soil surface and bottom were prominent with a good coupling effect of air temperature, soil moisture content and soil salt content, and both of the Ca2 transport had a synergistic effect. K transport in 0-20 cm soil layers affected mainly by water, while the 30-50 cm soil layers mainly influenced by temperature, the time from the irrigation point of view, in 5-15 d after irrigation affected by temperature, but after 20 d affected mainly by water, while the 30-50 cm soil layer mainly influenced by temperature, the time from the irrigation point of view, in 5-15 d after irrigation affected by temperature, but 20 d after irrigation affected mainly by water. Whether from the soil or the time, NO3- and SO42- transport was influenced mainly by water.
 Number of references:20
 Main heading:Irrigation
Controlled terms:Calcium  -  Greenhouses  -  Groundwater  -  Ions  -  Leaching  -  Moisture determination  -  Soil moisture
Uncontrolled terms:Air temperature  -  Coupling effect  -  Distribution profiles  -  Double peak  -  Greenhouse soil  -  Salt ions  -  Secondary salinzation  -  Single peak  -  Soil column  -  Soil layer   -  Soil salt content  -  Soil surfaces  -  Synergistic effect
Classification code:821.6 Farm Buildings and Other Structures  -  821.3 Agricultural Methods  -  801 Chemistry  -  944.2 Moisture Measurements  -  549.2 Alkaline Earth Metals  -  483.1 Soils and Soil Mechanics  -  444.2 Groundwater  -  533.1 Ore Treatment
 Database:Compendex
   
10. Accession number:20112514082284
 Title:Fatigue analysis on working device of excavator driven by practical load
 Authors:Zhang, Weiguo1 ; Quan, Long1 ; Cheng, Hang1 ; Yang, Jing1
Author affiliation: 1  Institute of Mechatronics Engineering, Taiyuan University of Technology, Taiyuan 030024, China
 Corresponding author:Quan, L. (quanlong@tyut.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:35-38 105
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:As the practical load is very complicated during the digging process of excavator, an analysis method of combining experiment with the dynamics simulation was suggested. With laboratory 6 t mini excavator as the research object, pressure sensors and displacement sensors were used to measure the changing of pressures by hydraulic cylinders displacement during digging. With each cylinder displacement curve as the driving element, ADMAS software was used to simulate the dynamics performance of digging process. The working loads of articulated points of the working device were obtained through simulation. The life contours of boom and arm were obtained by the fatigue analysis of the working device with software MSC. Fatigue. It showed that the fatigue life was the shortest in the stress concentration area of boom and arm, and the calculating value was 13 years. The research results can provide theory basis for the structural design of working device.
 Number of references:12
 Main heading:Excavators
Controlled terms:Construction equipment  -  Cylinders (shapes)  -  Excavation  -  Sensors  -  Stress concentration  -  Structural design
Uncontrolled terms:Analysis method  -  Displacement curve  -  Displacement sensor  -  Dynamics performance  -  Dynamics simulation  -  Fatigue analysis  -  Hydraulic cylinders  -  Mini excavators  -  Practical load  -  Research object   -  Research results  -  Working device  -  Working loads
Classification code:801 Chemistry  -  422 Strength of Building Materials; Test Equipment and Methods  -  421 Strength of Building Materials; Mechanical Properties  -  408.2 Structural Members and Shapes  -  408.1 Structural Design, General  -  405.2 Construction Methods  -  405.1 Construction Equipment
 Database:Compendex
   
11. Accession number:20112514082281
 Title:Method of priority dynamic distribution of CAN network in HEV
 Authors:Zhang, Li1 ; Wang, Yuefei1, 2 ; Yan, Gang3 ; Han, Jianghong2 ; Zhang, Jianjun2
Author affiliation: 1  School of Machinery and Automobile Engineering, Hefei University of Technology, Hefei 230009, China
2  Engineering Research Center of Safety Critical Industrial Measurement and Control Technology, Ministry of Education, Hefei 230009, China
3  Anhui JAC Automobile Co., Ltd, Hefei 230009, China
 Corresponding author:Zhang, L. (77zhangli@hfut.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:20-23 78
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Designing message priority is one of the key problems in terms of CAN network integrating in hybrid electric vehicle (HEV). Based on the analysis of structure of automotive network and real-time of message, the EDF algorithm was introduced into the design of system integrating, and the policy of priority designing based on EDF was built. Furthermore, the non-uniform code method and its schedulability condition were described, and the conclusion that before it was presented the partition factor had nothing to do with the schedulability was put forward. The result of the simulation indicated that the method could not only schedule the message set in which the deadline changed a large-scale range, but also had the low network utilization.
 Number of references:6
 Main heading:Computer simulation
Controlled terms:Electric vehicles  -  Response time (computer systems)  -  Secondary batteries
Uncontrolled terms:CAN bus  -  Deadline encoding  -  Dynamic priority  -  Earliest deadline first scheduling  -  Hybrid electric vehicle
Classification code:702.1.2 Secondary Batteries  -  722.4 Digital Computers and Systems  -  723.5 Computer Applications
 Database:Compendex
   
12. Accession number:20112514082308
 Title:NIR spectra in non-invasive measurement of cucumber leaf chlorophylls content
Authors:Shi, Jiyong1 ; Zou, Xiaobo1 ; Zhao, Jiewen1 ; Mao, Hanping2 ; Wang, Kailiang1 ; Chen, Zhengwei1
Author affiliation: 1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
2  Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Provience, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Zou, X. (zou_xiaobo@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:178-182 141
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:To improve and simplify the prediction model of chlorophylls content of cucumber leaves, synergy interval partial least squares (SiPLS) and net analyte signal (NAS) were combined to search for optimized informative spectral wavelengths about chlorophylls content from NIR spectra of cucumber leaves, then spectral model was developed on the basis of chlorophylls contents. One hundred and ten cucumber leaves were selected to collect NIR spectra and chlorophylls content according to chemical analysis. The spectra were preprocessed by SNV method and divided into 29 intervals, among which 4 subsets, i. e. No 3, 4, 5, 15 were selected by SiPLS. Then NAS was used to characterize the net signals of chlorophyll from cucumber leaf spectra which were used for regression variables of NAS model. The NAS calibration model was obtained with the correlation coefficient Rc of 0.9472, root mean square error of calibration of 0.0795 mg/g, the prediction coefficient Rp of 0.9250 and root mean square error of prediction of 0.0906 mg/g. It proves that SiPLS-NAS could determine optimal variables in NIR spectra and improve the accuracy of model.
 Number of references:12
 Main heading:Chlorophyll
Controlled terms:Calibration  -  Chemical analysis  -  Forecasting  -  Infrared devices  -  Mathematical models  -  Mean square error  -  Near infrared spectroscopy  -  Optimization
Uncontrolled terms:Cucumber leaf  -  Interval partial least squares  -  Near infrared spectra  -  Net analyte signals  -  Noninvasive measurements
Classification code:943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  921.5 Optimization Techniques  -  921 Mathematics  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  804.1 Organic Compounds  -  801.2 Biochemistry  -  801 Chemistry  -  741.3 Optical Devices and Systems  -  731.1 Control Systems  -  804 Chemical Products Generally
 Database:Compendex
   
13. Accession number:20112514082285
 Title:Characteristics of flow in large vertical axial flow pumping system
 Authors:Yang, Fan1 ; Liu, Chao1 ; Tang, Fangping2 ; Zhou, Jiren1
Author affiliation: 1  College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
2  College of Energy and Power Engineering, Yangzhou University, Yangzhou 225009, China
 Corresponding author:Liu, C. (liuchao@yzu.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:39-43 55
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The internal flow field in a vertical axial flow pumping system was simulated by CFX software using the Reynolds averaged N-S equations and RNG k-Ε turbulence model. Focusing on details of the inlet flow field, the flow characteristics in the inlet and outlet passages of pumping system were analyzed based on the calculation of different operating conditions with the flow rates range 180-340 L/s at the rated rotating speed. The results show that rotating of impeller has effects on the distribution of axial and tangential velocity components at the pump inlet, but the numerical values are relatively small. Outlet circulation of guide vane has great influence on flow pattern in the outlet passage. The flow distribution for both sides of the dividing pier is not symmetric, especially for small flow rate condition, the helical flow occurs at the right side of dividing pier. A good agreement is achieved in the performances of the pumping system between the predicted data and experimental data at the best efficiency point, which can meet the requirement of practical application.
 Number of references:8
 Main heading:Inlet flow
Controlled terms:Axial flow  -  Flow fields  -  Flow rate  -  Navier Stokes equations  -  Piers  -  Pumping plants  -  Pumps  -  Rotation  -  Turbulence models
Uncontrolled terms:Best efficiency point  -  Experimental data  -  Flow characteristic  -  Flow distribution  -  Flow pumping  -  Guide vane  -  Helical flows  -  Hydraulic performance  -  Inlet and outlet passages  -  Internal flow field   -  N-S equations  -  Numerical values  -  Operating condition  -  Pumping systems  -  Reynolds averaged  -  Rotating speed  -  Small flow-rate  -  Tangential velocity component  -  Vertical pumping system
Classification code:407.1 Maritime Structures  -  446 Waterworks  -  601.1 Mechanical Devices  -  618.2 Pumps  -  631 Fluid Flow  -  631.1 Fluid Flow, General
 Database:Compendex
   
14. Accession number:20112514082287
Title:Numerical simulation on rotor-stator interaction in a centrifugal pump with different gaps between impeller and tongue
 Authors:Zhu, Lei1 ; Yuan, Shouqi1 ; Yuan, Jianping1 ; Pei, Ji1
Author affiliation: 1  Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Yuan, S. (shouqiy@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:49-55
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The three-dimensional unsteady numerical method was applied to simulate the flow in the centrifugal pump with different volute casings by using shear stress transport turbulent model (SST). The base circle diameters of three volute casings were 184 mm, 198 mm and 214 mm with the same impeller, and the radial gaps between the impeller and tongue were 5.74%, 13.79% and 22.99% of the impeller radius, respectively. Different characters of the pressure fluctuation, radial hydraulic force and torque on the impeller were obtained with different gaps concerning the rotor-stator interaction. The analysis results indicated that the blade passing frequency dominated the pressure fluctuation, radial hydraulic force and torque on the impeller, of which fluctuations were periodic. The distributions of the radial hydraulic force vector coordinates were presented almost in circles with different gaps. The radial hydraulic force decreased at first then increased with the increasing volute base circle diameters. The amplitude of the pressure fluctuation on the detecting points decreased when the gaps between the impeller and the tongue became larger, and its high-frequency components were also fewer. The simulations were also presented on the characteristics of the radial hydraulic force and the tongue on the impeller of which volute base circle diameters was 184 mm at the different flow rates. For the centrifugal pump with 184 mm volute base circle diameters, its performance experiments and numeric simulations were done. It is found that the calculated results agree well with the measured results.
 Number of references:14
 Main heading:Pumps
Controlled terms:Axial flow  -  Centrifugal pumps  -  Hydraulic machinery  -  Hydraulics  -  Impellers  -  Numerical methods  -  Pumping plants  -  Rotors (windings)  -  Shear flow  -  Stators   -  Three dimensional
Uncontrolled terms:Analysis results  -  Base circle diameter  -  Blade passing frequency  -  Detecting point  -  High frequency components  -  Hydraulic force  -  Measured results  -  Numeric simulation  -  Performance experiment  -  Pressure fluctuation   -  Radial hydraulic force  -  Rotor-stator interactions  -  Shear-stress transport  -  Turbulent models  -  Unsteady numerical method  -  Volute casings
Classification code:902.1 Engineering Graphics  -  705.1 Electric Machinery, General  -  704.1 Electric Components  -  632.2 Hydraulic Equipment and Machinery  -  921.6 Numerical Methods  -  632.1 Hydraulics  -  618.2 Pumps  -  601.2 Machine Components  -  446 Waterworks  -  631.1 Fluid Flow, General
 Database:Compendex
   
15. Accession number:20112514082279
Title:Whole vehicle magnet rorheological fluid damper semi-active suspension variable universe fuzzy control simulation and test
 Authors:Chen, Jieping1 ; Feng, Wutang2 ; Guo, Wanshan2 ; Qiao, Yinhu1 ; Chen, Haoyun1
Author affiliation: 1  College of Engineering, Anhui Science and Technology University, Fengyang 233100, China
2  Chery Automobile Co., Ltd, Wuhu 241009, China
 Corresponding author:Chen, J. (chen369100@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:7-13 19
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The variable universe control strategy was adopted from the octa-plate control method for whole vehicle MRD semi-active suspension model. Simulations of vehicle travelling both straight and turning with the speed of 10 m/s, 20 m/s and 30 m/s were done in reconstruction standards B and C level road excitation signal. Large numbers of bench tests and road test have been done upon the completion of the modification of the vehicle. Simulation results showed that the designed semi-active suspension and control strategy had effectively improved the smoothness of the ride and there was 9% to 22% reduction in vibration intensity of the magneto rheological semi-active suspension and the passive suspension. The results showed that the model and the control strategy were feasible.
 Number of references:18
 Main heading:Suspensions (components)
Controlled terms:Automobile suspensions  -  Computer simulation  -  Fuzzy control  -  Magnets  -  Roads and streets  -  Vehicles
Uncontrolled terms:Fluid dampers  -  Semi active suspension  -  Simulation  -  Test  -  Variable universe
Classification code:731 Automatic Control Principles and Applications  -  723.5 Computer Applications  -  704 Electric Components and Equipment  -  921 Mathematics  -  632.1 Hydraulics  -  432 Highway Transportation  -  406.2 Roads and Streets  -  601.2 Machine Components
 Database:Compendex
   
16. Accession number:20112514082280
Title:Yaw moment fuzzy control of four-wheel-steering vehicle based on co-simulation technology
 Authors:Wang, Shufeng1 ; Li, Huashi2
Author affiliation: 1  School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China
2  School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
 Corresponding author:Wang, S. (shufeng@sdut.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:14-19
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to enhance the stability of vehicle in limited driving conditions, a virtual prototype model of four-wheel-steering vehicle which included suspension system, steering system and nonlinear characteristics of tires was established by using ADAMS/Car software. Control objectives of the best performance of side slip angle and yaw rate were settled. Aiming at the nonlinear characteristics of vehicle, an integrated fuzzy control strategy of rear steering angle and yaw moment was proposed, and a nonlinear integrated fuzzy control system was designed. Adopted the co-simulation method of ADAMS/Car and Matlab/Simulink, various simulations in limited driving conditions were carried out and the performance of the designed control system was tested. The simulation results showed that the integrated fuzzy control of rear steering angle and yaw moment could effectively avoid the instability of vehicle during critical steering process.
 Number of references:10
 Main heading:Four wheel steering
Controlled terms:Automobile steering equipment  -  Automobile suspensions  -  Computer simulation  -  Computer software  -  Control system stability  -  Control systems  -  Fuzzy control  -  Integration  -  Suspensions (components)  -  Vehicles   -  Wheels
Uncontrolled terms:Control objectives  -  Cosimulation  -  Driving conditions  -  Four-wheel-steering vehicle  -  Fuzzy control strategy  -  MATLAB /simulink  -  Non-Linearity  -  Nonlinear characteristics  -  Sideslip angles  -  Simulation result   -  Stability control  -  Steering angles  -  Steering systems  -  Suspension system  -  Virtual prototype  -  Yaw moment  -  Yaw rate
Classification code:921.2 Calculus  -  921 Mathematics  -  731 Automatic Control Principles and Applications  -  723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  663.2 Heavy Duty Motor Vehicle Components  -  632.1 Hydraulics  -  601.2 Machine Components  -  432 Highway Transportation
 Database:Compendex
   
17. Accession number:20112514082294
Title:Numerical prediction of the effect of surface roughness on aerodynamic performance of a wind turbine airfoil
 Authors:Li, Deshun1 ; Li, Rennian1 ; Yang, Congxin1 ; Wang, Xiuyong1 ; Li, Yinran1
Author affiliation: 1  School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
 Corresponding author:Li, R. (lirn@lut.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:111-115
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The two-dimensional incompressible N-S equations and the SST k-ω turbulence model were used to study the aerodynamic performance of a wind turbine airfoil under rough surface conditions. The DU 95-W-180 airfoil that is widely used in wind turbines was chosen as the object. The studies were mainly done as described: the lift coefficient and the drag coefficient of the airfoil under different roughness heights on full surface and different roughness tape locations were computed, the trend of the lift coefficient and the drag coefficient with the roughness height and the roughness tape location were analyzed, the critical value of the roughness height and the roughness tape location, the trends of the lift coefficient, the drag coefficient and the ratio of lift coefficient and drag coefficient with the roughness height at the critical locations were also analyzed and the results were gained.
 Number of references:12
 Main heading:Surface roughness
Controlled terms:Airfoils  -  Drag  -  Drag coefficient  -  Lift  -  Lift drag ratio  -  Navier Stokes equations  -  Turbulence models  -  Two dimensional  -  Wind turbines
Uncontrolled terms:Aerodynamic performance  -  Critical location  -  Critical value  -  Lift coefficient  -  N-S equations  -  Numerical predictions  -  Rough surfaces  -  Roughness height  -  Wind turbine airfoils
Classification code:931.2 Physical Properties of Gases, Liquids and Solids  -  931.1 Mechanics  -  902.1 Engineering Graphics  -  652.1 Aircraft, General  -  651.1 Aerodynamics, General  -  615.8 Wind Power (Before 1993, use code 611 )  -  443.1 Atmospheric Properties
 Database:Compendex
   
18. Accession number:20112514082313
Title:Expert system for investment risk-benefit assessment of greenhouse based on D-S evidence theory
 Authors:Wang, Jizhang1 ; Li, Dongsheng1, 2 ; Li, Pingping1
Author affiliation: 1  Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Provience, Jiangsu University, Zhenjiang 212013, China
2  School of Economics and Management, University of South China, Hengyang 421001, China
 Corresponding author:Li, P. (lipingping@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:203-207
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to analyze the risk-benefit assessment for greenhouse investment, risk-benefit assessment index system for greenhouse investment was established, and the weight of the factors was determined by using revised analytic hierarchy process. The risk-benefit assessment model of greenhouse investment was established based on D-S evidence theory. Expert system for risk-benefit assessment of greenhouse investment was developed. By means of the expert system, each expert can give the assessment for every program, and then the system assesses the risk-benefit comprehensively according to the ideas of each expert. The result can provide the basis for the investors to choose the proper greenhouse structure.
 Number of references:9
 Main heading:Risk assessment
Controlled terms:Expert systems  -  Greenhouses  -  Hierarchical systems  -  Investments  -  Rating
Uncontrolled terms:Assessment index system  -  Assessment models  -  D S evidence theory  -  Greenhouse structure  -  Risk-benefit assessment
Classification code:402.1 Industrial and Agricultural Buildings  -  723.4.1 Expert Systems  -  902.2 Codes and Standards  -  911.2 Industrial Economics  -  922.1 Probability Theory  -  961 Systems Science
 Database:Compendex
   
19. Accession number:20112514082283
Title:Co-simulation of flat-pushing characteristics of large mining face-shovel hydraulic excavator
 Authors:Zhu, Xiaojing1 ; Quan, Long1 ; Wang, Xinzhong2 ; Lü, Xiaolin2 ; Li, Guang2
Author affiliation: 1  Institute of Mechatronic Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2  Technology Center, Taiyuan Heavy Industry Co., Ltd, Taiyuan 030024, China
 Corresponding author:Quan, L. (quanlong@tyut.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:30-34
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The method of electro-hydraulic proportional controlling means matched by pump valve compound flow rate was proposed to achieve flat-pushing while designing the national largest face-shovel hydraulic excavator with the bucket capacity of 15 m3 and machine weigh of 260 t. The ratio of hydraulic cylinders' flow rate was ascertained by computer coordinate control during the flat-pushing process, the co-simulation research of dynamics of mechanical systems and hydraulic system in developing mining excavators' flat-pushing process was carried out by using the software of ADAMS and AMESim. The displacement, velocity and pressure of arm mining process in various hydraulic cylinder on the small excavator were validated by the experiment. It is confirmed that co-simulation research methods can accurately simulate the practical working environment of excavator.
 Number of references:14
 Main heading:Excavators
Controlled terms:Cobalt compounds  -  Computer control systems  -  Computer simulation  -  Computer software  -  Cylinders (shapes)  -  Excavation  -  Flow rate  -  Hydraulic equipment  -  Hydraulic machinery  -  Hydraulic servomechanisms   -  Hydraulic structures  -  Hydraulics  -  Mining  -  Shovels  -  Valves (mechanical)
Uncontrolled terms:Characteristics  -  Coordinate control  -  Cosimulation  -  Electro-hydraulics  -  Face-shovel excavator  -  Flat-pushing  -  Hydraulic cylinders  -  Hydraulic excavator  -  Hydraulic system  -  Mechanical systems   -  Mining process  -  Pump valve  -  research methods  -  Working environment
Classification code:804.1 Organic Compounds  -  723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  632.2 Hydraulic Equipment and Machinery  -  632.1 Hydraulics  -  631 Fluid Flow  -  611 Hydroelectric and Tidal Power Plants  -  601.2 Machine Components  -  502.2 Mine and Quarry Equipment  -  502.1 Mine and Quarry Operations  -  441 Dams and Reservoirs; Hydro Development  -  408.2 Structural Members and Shapes  -  405.1 Construction Equipment
 Database:Compendex
   
20. Accession number:20112514082299
  Title:Finite element method on mechanical properties of vacuum shelling chestnut
Authors:Yuan, Yuejin1 ; Yuan, Yueding2 ; Dang, Xin'an1 ; Xu, Yingying1 ; Dong, Jixian1 ; Xu, Junchen1
Author affiliation: 1  College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
2  College of Mathematics and Computer Science, Yichun University, Yichun 336000, China
 Corresponding author:Yuan, Y. (yuanyj@sust.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:136-141
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Taking the hemispherical chestnut as the study object, a finite element model for the mechanical properties of vacuum shelling chestnut was established by applying the finite element method and transport-process theory. The simulation and experimental results indicated that the finite element model could explain the mechanical properties of vacuum shelling chestnut well. The moisture distribution of chestnut shell was higher in the bottom center area and lower in the shell edge. The value of stress and strain was decreasing from the shell edge to the bottom center and arc peak. The wet stress played an important role in the vacuum shelling process, and was about five times larger than the pressure difference stresses in the initial and middle stage, but the wet stress decreased gradually at the end of the shelling process. The vacuum degree had a great effect on the vacuum shelling process, and the increasing vacuum degree did not only increase the pressure difference stresses but also the wet stresses.
 Number of references:17
 Main heading:Finite element method
Controlled terms:Computer simulation  -  Fruits  -  Mass transfer  -  Pressure effects  -  Strain  -  Stresses  -  Vacuum  -  Vacuum technology
Uncontrolled terms:Chestnut  -  Finite element  -  Finite element models  -  Heat and mass transfer  -  Moisture distribution  -  Pressure differences  -  Stress and strain  -  Vacuum degree
Classification code:931.1 Mechanics  -  921.6 Numerical Methods  -  821.4 Agricultural Products  -  951 Materials Science  -  723.5 Computer Applications  -  633 Vacuum Technology  -  421 Strength of Building Materials; Mechanical Properties  -  641.3 Mass Transfer
 Database:Compendex
   
21. Accession number:20112514082304
Title:Adsorption and desorption properties of phytic acid from rice bran on anion exchange resin
 Authors:Wang, Lin1 ; Luo, Jianping1 ; Zha, Xueqiang1 ; Zhang, Hailin1 ; Pan, Lihua1
Author affiliation: 1  School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China
 Corresponding author:Wang, L.
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:160-165
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The absorption and desorption properties of phytic acid on anion exchange resin were investigated through static and dynamic experiments. The results showed that D201 resin had the best exchange adsorption performance among all tested resins. The static absorption capacity of D201 resin reached 94.54 mg/g when the pH value of phytic acid solution was adjusted to 2.2, and sodium hydroxide solution of 1.5 mol/L was beneficial to desorption. The absorption behavior of D201 resin for phytic acid obeyed the Freundlich adsorption isotherm equation, indicating that the absorption can be performed under normal temperature. The absorption kinetic data complied with Lagergren pseudo-first-order rate equation. The apparent adsorption rate k has a negative correlation with the initial concentration of phytic acid and has a positive correlation with temperature. As far as the dynamic absorption and desorption of phytic acid on D201 resin was concerned, the effects of chromatography column diameter, sample concentration, sample flowing velocity and eluant flowing velocity were notably observed.
 Number of references:14
 Main heading:Desorption
Controlled terms:Absorption  -  Adsorption  -  Column chromatography  -  Ion exchange  -  Ion exchange resins  -  Ions  -  Sodium
Uncontrolled terms:Absorption behaviors  -  Absorption capacity  -  Absorption kinetics  -  Adsorption performance  -  Adsorptive exchange  -  Anion exchange resins  -  Apparent adsorption  -  Chromatography columns  -  Desorption properties  -  Dynamic absorption   -  Flowing velocity  -  Freundlich adsorption isotherms  -  Initial concentration  -  Negative correlation  -  pH value  -  Phytic acids  -  Positive correlations  -  Pseudo-first-order  -  Rate equations  -  Rice brans   -  Sample concentration  -  Sodium hydroxide solutions  -  Static and dynamic
Classification code:549.1 Alkali Metals  -  801 Chemistry  -  802 Chemical Apparatus and Plants; Unit Operations; Unit Processes
 Database:Compendex
   
22. Accession number:20112514082296
 Title:Optimal design on 20 kW constant-pitch wind turbine blades
 Authors:Liu, Zhanfang1 ; Zhou, Zhenkai1 ; Deng, Zhichun1
Author affiliation: 1  College of Resource and Environmental Sciences, Chongqing University, Chongqing 400044, China
 Corresponding author:Liu, Z. (zhanfang@cqu.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:121-124
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A method of making design attack angles as a variable was presented. Considering the wind speed probability distribution of wind farm, an optimization model with the objective of maximum annual energy production was established in the range of rated power and basic operating wind speed. The blade geometry of a 20 kW constant-pitch wind turbine was optimized by using genetic algorithm according to the model. Through the evaluation of the aerodynamic performance of 20 kW constant-pitch wind turbine and the comparison with the same type wind turbine of NREL, the results showed that optimized wind turbine had a better aerodynamic performance, which illustrated the advantages of the method in the design process of constant-pitch wind turbine.
 Number of references:10
 Main heading:Turbomachine blades
Controlled terms:Aerodynamics  -  Design  -  Electric utilities  -  Genetic algorithms  -  Optimal systems  -  Optimization  -  Probability distributions  -  Wind effects  -  Wind power  -  Wind turbines
Uncontrolled terms:Active stall  -  Aerodynamic performance  -  Annual energy productions  -  Attack angle  -  Blade geometry  -  Blades  -  Constant-pitch  -  Design process  -  Optimal design  -  Optimization models   -  Wind farm  -  Wind speed  -  Wind turbine blades
Classification code:921.5 Optimization Techniques  -  921 Mathematics  -  723 Computer Software, Data Handling and Applications  -  706 Electric Transmission and Distribution  -  922.1 Probability Theory  -  651.1 Aerodynamics, General  -  615.8 Wind Power (Before 1993, use code 611 )  -  408.1 Structural Design, General  -  408 Structural Design  -  618 Compressors and Pumps
 Database:Compendex
   
23. Accession number:20112514082291
Title:Rapid diagnosis of soil salinity temporal-spatial variances based on electromagnetic induction in a typical arid area
Authors:Li, Xiaoming1 ; Yang, Jingsong1 ; Liu, Guangming1 ; Liu, Meixian1 ; Yao, Rongjiang1
Author affiliation: 1  Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
 Corresponding author:Yang, J. (jsyang@issas.ac.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:79-85
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A typical arid area in South Xinjiang was selected to study the temporal-spatial variances of soil salinity. Calibration sites were selected in the study area. Apparent electrical conductivities (ECa) were measured, and soil samples were collected in the calibration sites. The results showed there was a good correlation between soil salt content and the apparent electrical conductivity, so the interpretation model for soil salinity could be established. A mobile electromagnetic induction survey system was constructed to survey the study area with enough ECa data collected. The spatial variance could be studied with GIS and geo-statistics knowledge, and the temporal-spatial variances could be rapid diagnosed by EM surveys over different times. The results showed serious salinization exited in the study area, and salinization in autumn was worse than that in spring, salinization in 2009 was more serious than that in 2008.
 Number of references:20
 Main heading:Geologic models
Controlled terms:Arid regions  -  Calibration  -  Electric conductivity  -  Electromagnetic induction  -  Inductance measurement  -  Salinity measurement  -  Soils  -  Surveys
Uncontrolled terms:Apparent electrical conductivity  -  Arid area  -  Calibration site  -  EM surveys  -  Geo-statistics  -  Good correlations  -  Interpretation model  -  Rapid diagnosis  -  Soil salinity  -  Soil salt content   -  Soil sample  -  Spatial variance  -  Study areas  -  Survey systems  -  Temporal-spatial variance  -  Xinjiang
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942.2 Electric Variables Measurements  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  701.1 Electricity: Basic Concepts and Phenomena  -  483.1 Soils and Soil Mechanics  -  481.1 Geology  -  444 Water Resources  -  443 Meteorology  -  405.3 Surveying
 Database:Compendex
   
24. Accession number:20112514082290
Title:Water balance simulation in SPAC systems of slope lands covered with typical vegetations on loess plateau
 Authors:She, Dongli1 ; Shao, Ming'an2 ; Yu, Shuang'en1
Author affiliation: 1  Key Lab. of Efficient Irrigation-Drainage and Agricultural Soil-Water Environment in Southern China, Ministry of Education, Hohai University, Nanjing 210098, China
2  State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China
 Corresponding author:She, D. (shedongli@gmail.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:73-78
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A numerical model, soil-water-atmosphere-plant model (SWAP), was applied to simulate dynamics of soil moisture and soil-water balance in three kinds of land use patterns, including cropland with mung bean, Stipa bungeana grassland and alfalfa grassland, based on field observations. The predicted values of soil moisture and soil water storage had obviously consistent with the measured values. The water input on Stipa bungeana grassland was roughly equal to the output. The water output on alfalfa grassland was 1.38 times of that on cropland, and the evapotranspiration of alfalfa was 3.88 times of that on cropland with mung bean, which was the main reason causing soil water deficit on alfalfa grassland. So conversion of farmland to forest and grassland regeneration will increase the output of water in the SPAC system, if there is a great deal of water consumption by vegetation community, it will lead to soil desiccation.
 Number of references:11
 Main heading:Geologic models
Controlled terms:Computer simulation  -  Land use  -  Moisture determination  -  Reforestation  -  Soil moisture  -  Vegetation  -  Water supply
Uncontrolled terms:Alfalfa grassland  -  Sloping cropland  -  Stipa bungeana grassland  -  SWAP model  -  Water balance
Classification code:821.0 Woodlands and Forestry  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  723.5 Computer Applications  -  944.2 Moisture Measurements  -  483.1 Soils and Soil Mechanics  -  446.1 Water Supply Systems  -  403 Urban and Regional Planning and Development  -  481.1 Geology
 Database:Compendex
   
25. Accession number:20112514082317
Title:Design and simulation of active hydraulic excitation system based on frequency conversion
 Authors:Kou, Ziming1 ; Zhang, Huixian1, 2 ; Lian, Hongzhen1, 3 ; Wei, Xiuye4
Author affiliation: 1  College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2  Electronic Science and Engineering Department, Huanghuai University, Zhumadian 463000, China
3  Shanxi Province Mine Fluid Control Engineering Research Center, Taiyuan 030024, China
4  School of Mechanical Engineering and Automation, North University of China, Taiyuan 030051, China
 Corresponding author:Kou, Z. (zmkou@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:226-230 197
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:To study the artificially produced and actively controlled water hammer wave generated by hydraulic vibration exciter, a mathematical model was established and an experimental system was designed to verify it. Through the given partial differential equations, a computer code based on the method of characteristics was developed to calculate transient pressure and flow velocity distributed along the pipe. The numerical simulations showed that a simple harmonic motion rose at every cross section of the pipe. Meanwhile, the excitation pressure and flow velocity at hydraulic cylinder increased as the rising rotational frequency of vibration exciter. Moreover, measured data was basically consistent with the numerical simulations. It indicated that the excitation parameters of hydraulic cylinder could be controlled almost linearly via adjusting the rotational frequency of vibration exciter. So, this work is expected to study vibration mechanism of a new hydraulic excitation system and play an experimental guiding role to further research in future.
 Number of references:8
 Main heading:Hydraulics
Controlled terms:Computer simulation  -  Cylinders (shapes)  -  Engineering research  -  Flow velocity  -  Hammers  -  Hydraulic equipment  -  Hydraulic servomechanisms  -  Hydraulic structures  -  Mathematical models  -  Partial differential equations   -  Pipe  -  Water hammer
Uncontrolled terms:Computer codes  -  Cross section  -  Design and simulation  -  Excitation parameters  -  Excitation system  -  Experimental system  -  Frequency conversions  -  Hydraulic cylinders  -  Hydraulic vibration  -  Measured data   -  Method of characteristics  -  Rotational frequency  -  Simple harmonic motion  -  Transient pressures  -  Vibration exciter  -  Vibration exciters  -  Vibration mechanisms
Classification code:921 Mathematics  -  901.3 Engineering Research  -  723.5 Computer Applications  -  632.2 Hydraulic Equipment and Machinery  -  632.1 Hydraulics  -  921.2 Calculus  -  631 Fluid Flow  -  611 Hydroelectric and Tidal Power Plants  -  605.2 Small Tools, Unpowered  -  441 Dams and Reservoirs; Hydro Development  -  408.2 Structural Members and Shapes  -  619.1 Pipe, Piping and Pipelines
 Database:Compendex
   
26. Accession number:20112514082309
 Title:On-line detection of cracked shell eggs based on acoustic resonance analysis
 Authors:Sun, Li1 ; Cai, Jianrong1 ; Lin, Hao1 ; Zhao, Jiewen1 ; Fang, Gen'gen2
Author affiliation: 1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
2  School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Cai, J. (jrcai@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:183-186
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:An on-line system based on acoustic resonance combined digital signal processing (DSP) system was developed for eggshell crack detection. It was achieved by analysis of measured frequency response of eggshell excited with a light mechanical force. Based on previous experiments, differences between the signals of intact eggs and cracked eggs were analyzed. Five excitation resonant frequency characteristics of eggs were used as input vectors of identification model to discriminate intact and crack eggs. The identification results were transmitted to host computer. The system was employed for on-line detection of cracked eggs, identification rates of intact eggs and cracked eggs were 92.0% and 90.5%, respectively. This system can detect 5 eggs within one second. It completely meets the need of on-line detection.
 Number of references:10
 Main heading:Crack detection
Controlled terms:Cracks  -  Digital signal processing  -  Frequency response  -  Natural frequencies  -  Signal detection
Uncontrolled terms:Acoustic resonance  -  Acoustical properties  -  Digital signals  -  Eggs  -  Host computers  -  Identification model  -  Identification rates  -  Input vector  -  Mechanical force  -  On-line detection   -  Shell eggs  -  System-based
Classification code:421 Strength of Building Materials; Mechanical Properties  -  711.1 Electromagnetic Waves in Different Media  -  716.1 Information Theory and Signal Processing  -  731.1 Control Systems
 Database:Compendex
   
27. Accession number:20112514082286
Title:Performance prediction and experiment for pressure fluctuation of interior flow in axial-flow pump
 Authors:Shi, Weidong1 ; Leng, Hongfei1 ; Zhang, Desheng1 ; Long, Fei1 ; Zhang, Hua1
Author affiliation: 1  Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Shi, W. (Wdshi@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural  Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:44-48
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The three dimensional unsteady turbulent flow in axial-flow pump whole flow field was simulated based on Reynolds time-averaged Navier-Stoke (RANS) solver embedded with k-Ε turbulence model and SIMPLEC arithmetic. The pressure fluctuation under various operation conditions and different guide-vanes were obtained. Numerical and experimental results showed that the maximum amplitude of pressure fluctuation took place at the inlet of impeller. The amplitude of pressure fluctuation became stronger significantly as the flow rate was far from optimum operation point. At the outlet of guide-vanes the fluctuation amplitude increased when the number of guide-vanes reduced. The frequency of pressure fluctuation is dominated by the rotation speed of impeller and the number of guide-vanes has little affect on it.
 Number of references:9
 Main heading:Pumps
 Controlled terms:Experiments  -  Impellers  -  Turbulence models
Uncontrolled terms:Axial flow pump  -  Interior flow  -  Maximum amplitude  -  Operation conditions  -  Optimum operations  -  Performance prediction  -  Pressure coefficient  -  Pressure fluctuation  -  Reynolds  -  Rotation speed   -  SIMPLEC  -  Time-averaged
Classification code:443.1 Atmospheric Properties  -  601.2 Machine Components  -  618.2 Pumps  -  901.3 Engineering Research
 Database:Compendex
   
28. Accession number:20112514082314
Title:Dynamic coordination principle and method of multidisciplinary collaborative product design based on semantics reasoning
 Authors:Chen, Liang1 ; Zhang, Shaoping1 ; Wang, Wei1
Author affiliation: 1  College of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350002, China
 Corresponding author:Chen, L. (clfj2005@tom.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:208-213
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Consistency maintenance and coordination are key issues in collaborative design. Aiming at the characteristics of multiple views and dynamic nature for multidisciplinary collaborative product design, a dynamic coordination principle and method were introduced. The main idea was when one discipline dynamically added or deleted some components in the discipline view model itself according to its demands, other disciplines would respond through a mechanism based on semantic reasoning about the components' functions and automatically update their discipline view models, and then the dynamic coordination among the multiple discipline view models was achieved in the collaborative design process. Using JSP, JavaBean, Drools, Ajax and other related techniques, a prototype system was developed, and a reducer was illustrated to validate the proposed principle and the method.
 Number of references:9
 Main heading:Product design
 Controlled terms:Maintenance  -  Semantics
Uncontrolled terms:Collaborative design  -  Collaborative product design  -  Consistency maintenance  -  Dynamic coordination  -  Dynamic nature  -  Multidisciplinary collaborative designs  -  Multiple disciplines  -  Multiple views  -  Product modeling  -  Prototype system   -  Semantic reasoning
Classification code:903.2 Information Dissemination  -  913.1 Production Engineering  -  913.5 Maintenance
 Database:Compendex
   
29. Accession number:20112514082302
Title:Optimization of furfural extraction from Camellia oleifera Abel nutshell by response surface methodology
 Authors:Yang, Xiaomin1 ; Liu, Jianping1 ; Li, Qianqian1 ; Xu, Peifei1 ; Hu, Lin1
Author affiliation: 1  Department of Chemistry, East China Jiaotong University, Nanchang 330013, China
 Corresponding author:Liu, J. (liujp@ecjtu.jx.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:151-155
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Furfural extracted from Camellia oleifera Abel nutshell using modified sulfuric acid as the catalyst was studied. Based on single factor tests of liquid-solid ratio, hydrolysis reaction time, reaction temperature and sulfuric acid mass fraction, the optimum extraction process was evaluated by Box-Behnken central composite experimental design and response surface methodology analysis. The results indicated that the optimum conditions were liquid-solid ratio of 5.96 mL/g, hydrolysis reaction time of 3.33 h and reaction temperature of 140°C. Under these optimized conditions, the experimental value of furfural extraction yield was 1.93%, in good agreement with the predictive value 1.78%. Therefore, the furfural extraction process from Camellia oleifera Abel nutshell optimized by response surface methodology is very reliable.
 Number of references:17
 Main heading:Extraction
Controlled terms:Aldehydes  -  Furfural  -  Hydrolysis  -  Liquids  -  Optimization  -  Sulfuric acid  -  Surface properties
Uncontrolled terms:Acid mass fraction  -  Box-Behnken  -  Central composite  -  Experimental values  -  Extraction process  -  Extraction yield  -  Hydrolysis reaction  -  Liquid solids  -  Modified method of sulfuric acid  -  Oleifera   -  Optimized conditions  -  Optimum conditions  -  Predictive values  -  Reaction temperature  -  Response Surface Methodology
Classification code:802.2 Chemical Reactions  -  802.3 Chemical Operations  -  804.1 Organic Compounds  -  804.2 Inorganic Compounds  -  921.5 Optimization Techniques  -  931.2 Physical Properties of Gases, Liquids and Solids
 Database:Compendex
   
30. Accession number:20112514082316
Title:Function testing of locust slippery plate manufactured based on waxy zone of nepenthes pitchers
 Authors:Wang, Lixin1 ; Zhou, Qiang1
Author affiliation: 1  College of Engineering, China Agricultural University, Beijing 100083, China
 Corresponding author:Zhou, Q. (zq@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:222-225
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:To test the function of the slippery plate bionic-manufactured based on the surface structure and function of waxy zone in Nepenthes pitchers, attachment force of locust on the slippery plate and the waxy zone was measured by utilizing attachment force measurement system for locust. The experiment of verifying the slippery function of the slippery plate with photoelectric inducing plague locust machine was carried out. The experiments results showed that the attachment force of locust on the slippery trapping plate was 0.94-1.05 times of that on the waxy zone. The slippery trapping ratio was reached to 82.4% when the slanting angle of the slippery plate was 32°. Similarity of the attachment force and considerable slippery trapping ratio probably indicates that the slippery plate bears similar function with the waxy zone, and can satisfy the technical demand of photoelectric inducing and slippery trapping plague locust.
 Number of references:9
 Main heading:Plates (structural components)
Controlled terms:Charge trapping  -  Experiments  -  Photoelectricity  -  Surface structure  -  Surface testing
Uncontrolled terms:Attachment force  -  Locust  -  Measurement system  -  Slippery plate  -  Technical demands  -  Waxy zone of Nepenthes pitcher
Classification code:408.2 Structural Members and Shapes  -  423.2 Non Mechanical Properties of Building Materials: Test Methods  -  712.1 Semiconducting Materials  -  741.1 Light/Optics  -  901.3 Engineering Research  -  951 Materials Science
 Database:Compendex
   
31. Accession number:20112514082278
Title:Performance test and data processing method for vehicle electronic stability control system
 Authors:Zhang, Xiaolong1, 2 ; Li, Liang2 ; Song, Jian2 ; Wu, Kaihui2 ; Li, Hongzhi2
Author affiliation: 1  School of Engineering, Anhui Agricultural University, Hefei 230036, China
2  State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
 Corresponding author:Song, J. (daesj@tsinghua.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:1-6 34
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:According to FMVSS 126, the definition of ESC, the objective performance test and evaluation methods for over-steer characteristic and lateral responding ability were analyzed respectively. The advanced vehicle road way test system was developed, in which the key steer robot device was comprehensively introduced for its performance requirement and operating principle, then the systematical road way tests were conducted. The wavelet filtering method was employed to reduce the noise included in the initial sensor signal. Compared with the frequency-domain filter method suggested by FMVSS 126, the wavelet filtering was more precise for its zero phrase delay and good reservation of signal's local specificity. Vehicle lateral displacement was obtained respectively from differential GPS method and acceleration method. During 2 s after the beginning of steering, the results were almost identical and the error was less than 5%. So the acceleration method suggested by FMVSS 126 was feasible to test the lateral displacement at 1.07 s after the beginning of steering. Finally, the results of three group tests showed that it was feasible to evaluate the vehicle stability with yaw rate information when vehicle did not lose its stability, but when vehicle was approaching instability or the stability was lost, the vehicle slip angle information should be added to evaluate the vehicle stability.
 Number of references:10
 Main heading:Advanced vehicle control systems
Controlled terms:Acceleration control  -  Automobile steering equipment  -  Control system stability  -  Data handling  -  Roads and streets  -  Stability  -  Steering  -  Testing
Uncontrolled terms:Acceleration method  -  Advanced vehicle  -  Data processing methods  -  Differential GPS  -  Electronic stability control  -  Evaluation  -  Filter method  -  Frequency domains  -  Lateral displacements  -  Operating principles   -  Performance requirements  -  Performance tests  -  Roadway test  -  Sensor signals  -  Test systems  -  Vehicle electronics  -  Vehicle slip angle  -  Vehicle stability  -  Wavelet filtering  -  Yaw rate
Classification code:731.4 System Stability  -  731.3 Specific Variables Control  -  723.2 Data Processing and Image Processing  -  663.2 Heavy Duty Motor Vehicle Components  -  423.2 Non Mechanical Properties of Building Materials: Test Methods  -  406.2 Roads and Streets  -  406.1 Highway Systems
 Database:Compendex
   
32. Accession number:20112514082312
Title:Ontology-based expert system for safe and reasonable application of pesticides in vegetable production
 Authors:Zhu, Chunyu1, 2 ; Xie, Bingyan3 ; Zheng, Jianqiu4 ; Li, Jianqiang1
Author affiliation: 1  College of Agriculture and Bio-technology, China Agricultural University, Beijing 100193, China
2  Institute for the Control of Agrochemicals, Ministry of Agriculture, Beijing 100125, China
3  Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
4  Beijing Plant Protection Station, Beijing 100029, China
 Corresponding author:Li, J. (lijq231@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:198-202
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A safe and reasonable application of pesticides expert system was designed with B/S structure which had six sub-systems such as pests querying, pest identifying, decision-making of control methods, pesticide recommendation, knowledge management and expert consulting. Ontology technology was applied to model expert knowledge in order to achieve high intelligent reasoning and the sharing, and the knowledge reusing. Furthermore, a multi-factor model of pesticide evaluation was designed for comprehensively considering various factors that affect the reasonable selection of pesticides. The implemented prototype system verified that the solution was low-cost, high scalable, user-friendly and efficient. It is widely prospective in various vegetable productions and will supply a guideline for other crops production.
 Number of references:8
 Main heading:Ontology
Controlled terms:Agricultural chemicals  -  Decision making  -  Expert systems  -  Knowledge management  -  Pesticides  -  Vegetables
Uncontrolled terms:B/S structure  -  Control methods  -  Expert knowledge  -  Intelligent reasoning  -  Multi-factor  -  Ontology technology  -  Ontology-based  -  Prototype system  -  Reasonable application  -  Sub-systems
Classification code:912.2 Management  -  903.3 Information Retrieval and Use  -  903 Information Science  -  821.4 Agricultural Products  -  804 Chemical Products Generally  -  803 Chemical Agents and Basic Industrial Chemicals  -  723 Computer Software, Data Handling and Applications
 Database:Compendex
   
33. Accession number:20112514082282
 Title:Characteristics of fuel supply loop for electronic unit pump fuel system
 Authors:Wang, Yupeng1 ; Liu, Fushui1 ; Liu, Xinghua1 ; Chen, Yuhang1
Author affiliation: 1  School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
 Corresponding author:Wang, Y. (w.yp@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:24-29
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The relationship of fuel pressure in fuel supply loop between the solenoid movement was analyzed at first. The results indicated that the consistency of the fuel pressure showed good. Secondly, the simulation model of fuel supply loop was established and validated by AMESim in which the relationship of the high pressure between electronic unit pump (EUP) and the inner of plunger chamber was obtained. Thirdly, the fuel pressure near to the EUP was analyzed, the time of fuel filling was calculated and the effect of it at different fuel supply pressures and speeds was discussed. Finally, the threshold speed of fuel filling process at different fuel supply pressures was analyzed, and the optimal fuel supply pressure was fixed which adapted to all engine conditions. Simultaneously, the effect of insufficient fuel filling was discussed.
 Number of references:8
 Main heading:Fuels
 Controlled terms:Computer simulation  -  Filling  -  Pressure effects  -  Pumps
Uncontrolled terms:Electronic unit pump  -  Engine conditions  -  Fuel filling process  -  Fuel pressure  -  Fuel supply  -  Fuel supply capability  -  Fuel supply loop  -  Fuel supply pressure  -  High pressure  -  Simulation model   -  Threshold speed
Classification code:931.1 Mechanics  -  723.5 Computer Applications  -  691.2 Materials Handling Methods  -  618.2 Pumps  -  524 Solid Fuels  -  523 Liquid Fuels  -  522 Gas Fuels
 Database:Compendex
   
34. Accession number:20112514082298
Title:Effects on microwave vacuum freeze drying uniformity contributed by microwave loading methods
Authors:Wang, Haiou1, 2 ; Hu, Zhichao2 ; Tu, Kang1 ; Wu, Feng2 ; Zhong, Ting2 ; Xie, Huanxiong2
Author affiliation: 1  College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
2  Nanjing Research Institute of Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
 Corresponding author:Tu, K. (kangtu@njau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:131-135 170
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Structural components and characteristics of WDG-5 type microwave freeze dryer were introduced, and the causes of uneven drying were analyzed. The experiments about the influence of microwave control methods on the drying uniformity were conducted on this dryer using the material of carrot. The results concluded that out layers of 20 material plates were dried faster than inner ones. Compared with the whole working method of microwave system, the two-group alternative working method evidently improved the drying uniformity among plate layers. As for the materials within the same layer plate, peripheral materials were dried faster than central ones. And the drying uniformity of the same plate materials was also improved greatly under the two-group alternative working method of microwave system in contrast with the whole working method.
 Number of references:8
 Main heading:Microwaves
Controlled terms:Dryers (equipment)  -  Drying  -  Experiments  -  Materials  -  Plates (structural components)  -  Vacuum
Uncontrolled terms:Freeze dryer  -  Microwave control  -  Microwave systems  -  Microwave-vacuum  -  Structural component  -  Vacuum freeze drying  -  Working methods
Classification code:951 Materials Science  -  901.3 Engineering Research  -  802.1 Chemical Plants and Equipment  -  711 Electromagnetic Waves  -  642.1 Process Heating  -  633 Vacuum Technology  -  408.2 Structural Members and Shapes
 Database:Compendex
   
35. Accession number:20112514082289
 Title:Numerical simulation for single pit soil water movement of water storage pit irrigation
 Authors:Li, Jingling1 ; Sun, Xihuan1 ; Ma, Juanjuan1 ; Li, Jianwen1 ; Zhang, Wenjie1
Author affiliation: 1  College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
 Corresponding author:Sun, X. (sunxihuan@tyut.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:63-67 85
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Based on the theory of soil water dynamic, a simulating model and boundary conditions for the soil water of water storage single pit irrigation were established, and the model was numerically solved by finite volume method. The results showed that good agreement was obtained between simulated and measured wetting front and soil moisture content. It indicated that the mathematic model was correct and the model solving with finite volume method was feasible. It is concluded that the model could be used to implement water transport in soil under the water storage single pit.
 Number of references:13
 Main heading:Geologic models
Controlled terms:Computer simulation  -  Finite volume method  -  Irrigation  -  Moisture determination  -  Numerical methods  -  Soil moisture
Uncontrolled terms:Mathematic model  -  Movement of soil water  -  Soil water  -  Soil water dynamics  -  Soil water movement  -  Water storage  -  Water storage pit irrigation  -  Water transport  -  Wetting fronts
Classification code:481.1 Geology  -  483.1 Soils and Soil Mechanics  -  723.5 Computer Applications  -  821.3 Agricultural Methods  -  921.6 Numerical Methods  -  944.2 Moisture Measurements
 Database:Compendex
   
36. Accession number:20112514082318
 Title:Load distribution of globoidal indexing cam mechanism with steel ball
 Authors:Fu, Zhenshan1, 2 ; Feng, Xianying1 ; Li, Lei1 ; Zhang, Chengliang1
Author affiliation: 1  School of Mechanical Engineering, Shandong University, Ji'nan 250061, China
2  Mechanical and Electronic Engineering Department, Weihai Vocational College, Weihai 264210, China
 Corresponding author:Feng, X. (fxying@sdu.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:231-234
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The profile surface equation and the meshing equation of a steel ball globoidal indexing cam with double-arc structure were deduced by using rotation tensor method and spatial engagement theory. The load distribution and connection expression of input torque and output torque were deduced applying hertz contact theory and deformation compatibility condition. It was acquired by example that the load distributed on each steel ball engaging in was different and the force on steel ball changed abruptly when steel ball was engaged in and out, the more steel balls were engaged in, the smaller force of each ball would be.
 Number of references:7
 Main heading:Spheres
 Controlled terms:Cams  -  Indexing (of information)
Uncontrolled terms:Deformation compatibility  -  Globoidal indexing cam  -  Hertz contact theory  -  Load distributions  -  Output torque  -  Point engaging  -  Profile surfaces  -  Steel ball  -  Steel balls  -  Tensor method
Classification code:601.3 Mechanisms  -  631 Fluid Flow  -  903.1 Information Sources and Analysis
 Database:Compendex
   
37. Accession number:20112514082295
 Title:Characteristics of field modulated magnetic gear in wind turbine system
 Authors:Bao, Guangqing1 ; Liu, Xinhua2 ; Mao, Kaifu1
Author affiliation: 1  College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China
2  Shanghai Electric Power Transmission and Distribution Branch, Shanghai 200050, China
 Corresponding author:Bao, G. (baogq03@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:116-120 150
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A novel field modulated magnetic gear (FMMG) with concentric configuration was proposed and introduced to the drive train for a wind turbine system, which eliminated the vibration, noise and lubrication problems of mechanical gearbox and avoided the size and weight issues of directly-driven wind turbines. And the efficiency and reliability were improved simultaneously. Based on the field computations by time-stepping finite element analysis, the co-simulation FEM model of synchronous generator and magnetic gear was established and the dynamic performance of the transmission system was studied. The electromagnetic design and simulation results were verified by the experiment of the 1 kW FMMG prototype.
 Number of references:12
 Main heading:Finite element method
Controlled terms:Computer simulation  -  Electric power generation  -  Electric power transmission  -  Synchronous generators  -  Vibrations (mechanical)  -  Wind power  -  Wind turbines
Uncontrolled terms:Cosimulation  -  Drive train  -  Dynamic performance  -  Efficiency and reliability  -  Electromagnetic designs  -  FEM models  -  Field computation  -  Field modulated  -  Magnetic gear  -  Time-stepping   -  Transmission systems  -  Wind turbine systems
Classification code:931.1 Mechanics  -  921.6 Numerical Methods  -  723.5 Computer Applications  -  706.1.1 Electric Power Transmission  -  705.2.1 AC Generators  -  615.8 Wind Power (Before 1993, use code 611 )  -  615 Thermoelectric, Magnetohydrodynamic and Other Power Generators
 Database:Compendex
   
38. Accession number:20112514082293
Title:Optimization of crop irrigation quantity and irrigation date based on the improved NSGA-II
 Authors:Qie, Zhihong1 ; Han, Liming1 ; Wu, Xinmiao1
Author affiliation: 1  College of Urban and Rural Construction, Agricultural University of Hebei, Baoding 071001, China
 Corresponding author:Qie, Z. (qiezhihong@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:106-110
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Under the condition of deficient irrigation, based on the field water balance model and crop yield calculation model, a multi-objective optimization model was put forward to optimize irrigation date and corresponding quantity of irrigation simultaneously. In this model, irrigation date and the quantity of irrigation water were regarded as optimization variables, and maximization of relative yield of crops and minimization of total quantity of irrigation water during whole growth stage were as the optimization objectives. In addition, in the respect of solving the model, a new genetic chromosome structure was designed for this kind of optimization problems. On the basis of non-dominated sorting genetic algorithm (NSGA-II), an improved genetic algorithm based on grouping sort was put forward to solve the optimization model. The model was verified by irrigation schedule optimization of corn. Optimization result showed that relative yield of crops increased by 0.07-0.20 when the total irrigation water quantity was same, and the irrigation water quantity decreased by 7-15 cm when the same relative yield in comparison with the calculation results of literature [9].
 Number of references:14
 Main heading:Irrigation
Controlled terms:Crops  -  Genetic algorithms  -  Mathematical models  -  Multiobjective optimization  -  Runoff  -  Water supply
Uncontrolled terms:Corn  -  Irrigation schedule optimization  -  Multi objective  -  Non-dominated sorting genetic algorithms  -  Water production function
Classification code:444.1 Surface Water  -  446.1 Water Supply Systems  -  821.3 Agricultural Methods  -  821.4 Agricultural Products  -  921 Mathematics  -  921.5 Optimization Techniques
 Database:Compendex
   
39. Accession number:20112514082307
Title:Total nitrogen content detection in organic substrate using visible-near-infrared spectroscopy
 Authors:Zhu, Yongli1 ; Li, Pingping1 ; Sun, Demin1 ; Mao, Hanping1
Author affiliation: 1  Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Li, P. (lipingping@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:175-177 192
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:For the purpose of developing a method for rapid detection of total nitrogen content in organic vinegar residue substrates, visible-near-infrared spectroscopy was used to collect the spectral data of the representative samples. And the spectra were pretreated by the method of first derivative after normalization. In order to choose the characteristic wavelengths for the total nitrogen content in the substrates, stepwise regression (SWR) method was applied twice. The results indicated that the characteristic wavelength was at 1699 nm, 746 nm, 1864 nm and 2154 nm, respectively. Based on these wavelengths, a linear regression model was performed. For comparing the predictive precision of the model, the correlationship between prediction total nitrogen content and that obtained by chemical method was analyzed. It was confirmed that the multivariate equation was the best with correlation coefficient 0.9334 and root mean squared error of prediction (RMSEP) 1.04. Therefore, it was demonstrated that visible-near-infrared spectroscopy with characteristic wavelengths selecting could be an available method for rapid detection of total nitrogen content in organic substrate.
 Number of references:10
 Main heading:Substrates
Controlled terms:Acetic acid  -  Chemical analysis  -  Infrared devices  -  Infrared spectroscopy  -  Linear regression  -  Nitrogen  -  Textiles
Uncontrolled terms:Characteristic wavelength  -  Organic substrate  -  Stepwise regression method  -  Total nitrogen  -  Visible-near infrared spectroscopy
Classification code:819 Synthetic and Natural Fibers; Textile Technology  -  804.1 Organic Compounds  -  804 Chemical Products Generally  -  922.2 Mathematical Statistics  -  801 Chemistry  -  741.1 Light/Optics  -  461 Bioengineering and Biology  -  741.3 Optical Devices and Systems
 Database:Compendex
   
40. Accession number:20112514082306
 Title:Detection of processed animal proteins in feeding stuffs by near-infrared microscopy
 Authors:Lü, Chengxu1 ; Yang, Zengling1 ; Han, Lujia1 ; Liu, Xian1
Author affiliation: 1  College of Engineering, China Agricultural University, Beijing 100083, China
 Corresponding author:Han, L. (hanlj@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:171-174 213
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:With the aim to investigate the feasibility of near-infrared microscopy method for discrimination of processed animal proteins in feeding stuffs, twelve processed animal protein samples and 14 plant based feed samples were collected. At the same time, four feeds were prepared for validation. The spectra were got with PerkinElmer spotlight 400 spectrum 400 FT-NIR microscope, and the calibration equation was established by partial least squares method with the pretreatment of Savitzky-Golay derivative 1442, full multiplicative scatter correction and average variables 2. The result showed that the calibration gave determination coefficients of 0.969, and a standard error of cross validation of 0.090. The processed animal protein samples could be detected in nature feed samples. The results indicate that near-infrared microscopy has huge potential in detecting the processed animal proteins in feeding stuffs.
 Number of references:10
 Main heading:Animals
Controlled terms:Calibration  -  Feeding  -  Infrared devices  -  Least squares approximations  -  Proteins
Uncontrolled terms:Calibration equations  -  Cross validation  -  Determination coefficients  -  Feed samples  -  Multiplicative scatter correction  -  Near-infrared microscopies  -  Partial least-squares method  -  Perkinelmer  -  Pre-Treatment  -  Processed animal proteins   -  Savitzky-Golay  -  Standard errors
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  921.6 Numerical Methods  -  822 Food Technology  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  814 Leather and Tanning  -  804.1 Organic Compounds  -  741.3 Optical Devices and Systems  -  691.2 Materials Handling Methods  -  471 Marine Science and Oceanography  -  461 Bioengineering and Biology
 Database:Compendex
   
41. Accession number:20112514082305
 Title:Spectral characteristics model of lettuce leaves' water content
 Authors:Mao, Hanping1 ; Gao, Hongyan1 ; Zhang, Xiaodong1
Author affiliation: 1  Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Mao, H. (maohp@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:166-170
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Spectral reflectance of lettuce leaves in growing status was measured using the ASD FieldSpec3, and logarithmic transformation was also obtained. By variable selection, it was found that the linear relationships between dry-basis moisture content of lettuce leaves and spectral reflectance data in 725 nm, 1075 nm, 1272 nm, 1450 nm, 1640 nm and 1958 nm were very notable. In order to overcome the impact of multicollinearity, quantitative analysis models of dry-blade's moisture content have been established respectively with methods of multiple linear regression analysis, principal component regression analysis, partial least squares regression analysis and PLS-neural network analysis. The result showed that the correlation coefficient R of measured and predictive values from the four algorithms were 0.4850, 0.8992, 0.9174 and 0.9470 respectively, which showed better predictive performance of the model based on PLS-neural network analysis than the others.
 Number of references:9
 Main heading:Water content
Controlled terms:Electric network analysis  -  Least squares approximations  -  Linear regression  -  Mathematical models  -  Moisture determination  -  Neural networks  -  Principal component analysis  -  Reflection  -  Statistics
Uncontrolled terms:Correlation coefficient  -  Leaves  -  Lettuce  -  Linear relationships  -  Logarithmic transformations  -  Model-based OPC  -  Multicollinearity  -  Multiple linear regression analysis  -  Partial least squares regression analysis  -  Predictive performance   -  Predictive values  -  Principal component regression analysis  -  Quantitative analysis model  -  Spectral characteristics  -  Spectral reflectances  -  Variable selection  -  Water stress
Classification code:922.2 Mathematical Statistics  -  921.6 Numerical Methods  -  921 Mathematics  -  944.2 Moisture Measurements  -  723.4 Artificial Intelligence  -  703.1.1 Electric Network Analysis  -  444 Water Resources  -  711 Electromagnetic Waves
 Database:Compendex
   
42. Accession number:20112514082301
Title:Effect of alginate film containing cinnamon and Nisin on the freshness of northern snakehead
 Authors:Lü, Fei1 ; Ding, Yuting1 ; Ye, Xingqian2
Author affiliation: 1  College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, China
2  School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
 Corresponding author:Lü, F. (lvfei123@zju.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:146-150
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Alginate-calcium film that contains cinnamon oil and nisin was used as an antimicrobial packaging to maintain the freshness of northern snakehead at refrigeration temperature (4 ± 1)°C. Northern snakehead fillets were treated with alginate film (C0), and alginate film contained cinnamon oil (C1), alginate film containing Nisin (C2), or alginate film containing cinnamon oil and Nisin (C3). Northern snakehead fillets without any treatment were used as a control (CK). C1 and C3 more efficiently inhibited the growth of total viable mesophilic bacteria, total psychrotrophs bacteria and Pseudomonas spp. than CK, C0 and C2 treatments. C1 and C3 treatments significantly reduced chemical spoilage, reflected in low pH value, total volatile base nitrogen content and thiobarbituric acid reactive substances, and retarded color changes. However, there was no significant difference between the C1 and C3 treatments. Thus, alginate-calcium film containing cinnamon or cinnamon and Nisin efficiently maintained the quality of northern snakehead fillets during storage.
 Number of references:18
 Main heading:Alginate
 Controlled terms:Antibiotics  -  Bacteria  -  Bacteriology
Uncontrolled terms:Antimicrobial efficacy  -  Antimicrobial packaging  -  Cinnamon oil  -  Color changes  -  Mesophilic bacteria  -  Nisin  -  Nitrogen content  -  Northern snakehead  -  pH value  -  Pseudomonas spp   -  Psychrotrophs  -  Refrigeration temperatures  -  Thiobarbituric acid reactive substances
 Classification code:461.9 Biology  -  804.1 Organic Compounds
 Database:Compendex
   
43. Accession number:20112514082315
 Title:Integration of product knowledge based on modular ontologies of product knowledge
 Authors:Zhang, Taihua1 ; Gu, Xinjian2 ; Bai, Fuyou2
Author affiliation: 1  College of Mechanical and Electrical Engineering, Guizhou Normal University, Guiyang 550014, China
2  Institution of Contemporary Manufacturing Engineering, Zhejiang University, Hangzhou 310027, China
 Corresponding author:Zhang, T. (zhangth542@sohu.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:214-221
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The definition of modular ontology of product knowledge was given. The idea of the product knowledge integration based on modular ontology of product knowledge was presented. An integration method based on structure-semantics-specific product knowledge modular ontology was proposed. In the method, construction of the relation bridge rules, identification of the integration rules and integration implementation were established through structure, semantics and specific levels. The flow chart of the integration process was given. The achievement of the integration process was showed through examples and enterprise application.
 Number of references:15
 Main heading:Integration
 Controlled terms:Knowledge based systems  -  Ontology  -  Semantics
Uncontrolled terms:Enterprise applications  -  Flow charts  -  Integration method  -  Integration process  -  Integration rule  -  Modular ontologies  -  Product knowledge  -  Reasoning  -  Relation bridge rule
Classification code:723 Computer Software, Data Handling and Applications  -  723.4.1 Expert Systems  -  903 Information Science  -  903.2 Information Dissemination  -  921.2 Calculus
 Database:Compendex
   
44. Accession number:20112514082303
 Title:Separation and purification procyanidins from chestnut-shells by macroporous resin
Authors:Zhang, Haihui1 ; Duan, Yuqing1 ; Li, Jinfeng1 ; Ma, Haile1 ; Shao, Tingting1 ; Xu, Feifei1
Author affiliation: 1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Duan, Y. (dyq101@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:42
 Issue:5
 Issue date:May 2011
 Publication year:2011
 Pages:156-159 155
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:With the aim to separate and purify procyanidins from chestnut-shells (CSPCs) by macroporous resin, twelve macroporous resins were tested for their static adsorption/desorption performance towards CSPCs. Based on the static adsorption experiments, the suitable macroporous resin was screened to carry out dynamic adsorption experiment, the content and the relative molecular weight of CSPCs were analyzed. The results showed that AB-8 was the optimal macroporous resin for separating and purifying CSPCs, the optimum separating condition was as follows: the mass concentration and the sampling rate were 1.864 mg/mL and 2 mL/min, respectively. The total recovery of CSPCs reached 94.2% eluted with 50% ethanol of 4 BV at a flow velocity of 1 mL/min, and the content of the total CSPCs in the obtained fine product was 89.8%. Analysis of CSPCs by ESI-MS demonstrated the molecular weight ranged from 289.4 to 1154.9 (M H) within 4 of average polymeric degree.
 Number of references:13
 Main heading:Resins
Controlled terms:Adsorption  -  Ethanol  -  Experiments  -  Fruits  -  Molecular weight  -  Purification
Uncontrolled terms:Chestnut-shells  -  Dynamic adsorption  -  Fine products  -  Macroporous resin  -  Mass concentration  -  Procyanidins  -  Sampling rates  -  Separation and purification  -  Static adsorption  -  Total recovery
Classification code:523 Liquid Fuels  -  801 Chemistry  -  802.3 Chemical Operations  -  815.1.1 Organic Polymers  -  821.4 Agricultural Products  -  901.3 Engineering Research
 Database:Compendex