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2010年第41卷第10期共收录46篇
1. Accession number: 20104813430841
Title: Determination of organophosphorus pesticide residue by using near-infrared spectroscopy
Authors: Chen, Jingjing1 ; Li, Yongyu1 ; Wang, Wei1 ; Peng, Yankun1 ; Wu, Jianhu1 ; Shan, Jiajia1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Peng, Y. (ypeng@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 134-137
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: Near-infrared (NIR) spectroscopy was used to measure trace chemicals, which could be useful for detection of pesticide residue in vegetable. Filter paper was used as the substrate. Pesticide solution was prepared by dissolving the commercial pesticide into distilled water at different concentrations. Samples were prepared by pipetting the solution onto the filter paper and then evaporated by vacuum drying oven. Then the spectra of samples were acquired in the region of 4000 cm-1 to 10000 cm-1 by NIR spectrometer. Partial least squares regression (PLSR) method and optimal band difference regression (OBDR) were used to establish prediction models respectively. Prediction results indicated that the PLSR models were able to predict the concentration of chlorpyrifos with 0.954 as the correlation coefficient of validation set, the OBDR models gave the best performance with 0.904 as the correlation coefficient of validation set. It could be concluded that NIR determination of pesticide was a low cost, environment friendly and potential method compare to the traditional methods.
Number of references: 15
Main heading: Pesticides
Controlled terms: Chemical detection - Forecasting - Infrared devices - Infrared spectroscopy - Mathematical models - Regression analysis - Spectrometers - Textiles
Uncontrolled terms: Chlorpyrifos - Correlation coefficient - Distilled water - Environment friendly - Filter papers - Low costs - NIR spectrometer - Organophosphorus pesticide - Partial least squares regression - Pesticide residue - Pesticide solutions - Potential methods - Prediction model - Rapid detection - Vacuum drying
Classification code: 922.2 Mathematical Statistics - 921 Mathematics - 819 Synthetic and Natural Fibers; Textile Technology - 803 Chemical Agents and Basic Industrial Chemicals - 801 Chemistry - 741.3 Optical Devices and Systems - 741.1 Light/Optics
DOI: 10.3969/j.issn.1000-1298.2010.10.028
Database: Compendex 2. Accession number: 20104813430828
Title: Experiment on cutting mechanical property of single super rice stalk
Authors: Zhao, Zhan1 ; Li, Yaoming1 ; Xu, Lizhang1 ; Song, Shujun1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Li, Y. (ymli@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 72-75
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 pendulum impact cutting test-rig and a cutting force measurement system composed of a cantilever weigh sensor and a high speed analog acquisition card were developed. Then cutting mechanical property experiments of super rice stalk were carried out. According to the measuring cutting force, the cutting power consumption of different super rice stalk were calculated, and the influence of cutting speed, cutting position and parting cutter on the cutting force and consumption were analyzed. The results indicated slight decreasing tendency of cutting force with the increasing of cutting position. The peak cutting force and the cutting power consumption nearly linear increased with the increasing of cutting sectional area, but both decreased gradually with the increasing of cutting speed. The peak cutting force of different single super rice stalks could reach 24~32N.
Number of references: 8
Main heading: Cutting
Controlled terms: Cutting tools - Experiments - Mechanical properties
Uncontrolled terms: Cutting force measurements - Cutting forces - Cutting power - Cutting speed - Cutting test - High-speed analog - Rice stalk - Stalk - Super rice - Weigh sensor
Classification code: 604.1 Metal Cutting - 605 Small Tools and Hardware - 901.3 Engineering Research - 951 Materials Science
DOI: 10.3969/j.issn.1000-1298.2010.10.015
Database: Compendex 3. Accession number: 20104813430816
Title: Road-friendliness of interconnected hydro-pneumatic suspension based on ADAMS/Simulink/AMESim
Authors: Wei, Jianhua1 ; Du, Heng1 ; Fang, Xiang1 ; Guo, Kun2
Author affiliation: 1 State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
2 Zoomlion Heavy Industry Science and Technology Development Co., Ltd., Changsha 410131, China
Corresponding author: Wei, J. (jhwei@zjuem.zju.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 11-17
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 vehicle-generated road damage can be effectively reduced when the relevant parameters of hydro-pneumatic suspension in engineering vehicles are tuned reasonably. Multi-body dynamics model with ADAMS, hydraulic system model with AMESim and spectra of road surface roughness model with Simulink were established based on 4-DOF signal-axis vehicle model with consideration of the nonlinear characteristic of accumulator, fluid resistance, check valve and pipeline in the system. "95 percentage fourth power aggregate force" was used as the criterion for road-friendliness and co-simulation was achieved. The relation between road-friendliness and relevant parameters of interconnected hydro-pneumatic suspension was analyzed through co-simulation. In certain extent, the road damage coefficient first decreased and then increased with the increase of the initial pressure of accumulator and the diameter of damper hole in suspension cylinder. The road damage coefficient decreased with the increase of the total volume of accumulator and the inner diameter of pipe. The length of pipe had little influence on the road damage coefficient.
Number of references: 11
Main heading: Suspensions (components)
Controlled terms: Automobile suspensions - Hydraulic accumulators - Hydraulic equipment - Leakage (fluid) - Pipe - Pneumatic control - Roads and streets - Surface roughness
Uncontrolled terms: Check valves - Cosimulation - Engineering vehicles - Fluid resistance - Hydraulic system - Hydro-pneumatic suspension - Initial pressure - Inner diameters - Multibody dynamics model - Nonlinear characteristics - Road damage - Road surface roughness - Road-friendliness - Simulink - Vehicle model
Classification code: 406.2 Roads and Streets - 601.2 Machine Components - 619.1 Pipe, Piping and Pipelines - 632 Hydraulics, Pneumatics and Related Equipment, and Fluidics - 931.2 Physical Properties of Gases, Liquids and Solids
DOI: 10.3969/j.issn.1000-1298.2010.10.003
Database: Compendex 4. Accession number: 20104813430858
Title: Form grinding wheel dressing and simulation for helical-gear
Authors: Su, Jianxin1 ; Deng, Xiaozhong2 ; Ren, Xiaozhong2 ; Zhang, Ligong2
Author affiliation: 1 School of Mechatronics, Northwestern Polytechnical University, Xi'an 710072, China
2 School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China
Corresponding author: Su, J. (jianxinsu@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 219-222
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 motion relation between grinding wheel and gear in the process of helical-gear form grinding, the mathematical model of the helical-gear form grinding was established. The theoretical profile of the grinding wheel had been obtained by deducing the contact condition equations between the grinding wheel and the tooth face to be ground. The equidistant curve of the profile of grinding wheel was deduced to meet the need for dressing the grinding wheel by means of diamond wheel. The grinding wheel dressing software and numerical simulation software were developed, which could be used to dress the form grinding wheels with arbitrary helical-gear parameters and test the wheel dressing accuracy. Helical-gear grinding experiments showed that the dressing theory was correct and the dressing software was feasible.
Number of references: 7
Main heading: Wheel dressing
Controlled terms: Abrasives - Computer software - Grinding (comminution) - Grinding (machining) - Grinding machines - Grinding mills - Grinding wheels - Mathematical models
Uncontrolled terms: Contact conditions - Diamond wheel - Form grinding - Form grinding wheel - Gear grinding - Gear parameter - Numerical simulation software - Wheel profile
Classification code: 606.1 Abrasive Materials - 606.2 Abrasive Devices and Processes - 723 Computer Software, Data Handling and Applications - 802.1 Chemical Plants and Equipment - 802.3 Chemical Operations - 921 Mathematics
DOI: 10.3969/j.issn.1000-1298.2010.10.045
Database: Compendex 5. Accession number: 20104813430814
Title: Sideslip angle roadway test system for vehicle stability control
Authors: Zhang, Xiaolong1, 2 ; Li, Liang2 ; Li, Hongzhi2 ; Song, Jian2
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: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 1-5
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: Vehicle sideslip angle is employed by the vehicle stability control system (VSC) as the basis for predicting the vehicle maneuverability and stability. The scheme of sideslip angle test system based on the '1 2' GPS technology, i.e. one base station and two roving stations, was proposed, and the corresponding system was developed. The paper firstly introduced the primary sensor matching and the devices installation, then described the computation method for the sideslip angle based on the GPS data. Finally, the systematical road way tests were conducted, and the effectiveness of GPS scheme was verified by the same group test data of sideslip angle obtained from the double-direction optical speed sensor. The sideslip angle test system was characterized of high frequency and accuracy for positioning, velocity and sideslip angle measurement for vehicle body and road wheels, and of convenient installation on the spot. It can provide the credible test ways for the verification of the sideslip angle estimation algorithm and the control logic of VSC.
Number of references: 10
Main heading: Control system stability
Controlled terms: Angle measurement - Control theory - Global positioning system - Maneuverability - Roads and streets - Sensors - Stability - System stability - Testing - Vehicle wheels
Uncontrolled terms: Computation methods - Control logic - GPS data - GPS schemes - GPS technologies - High frequency - Primary sensors - Roving stations - Sideslip angles - Speed sensors - Stability control system - Test data - Test systems - Vehicle body - Vehicle stability control - Vehicle stability control systems
Classification code: 943.3 Special Purpose Instruments - 943.2 Mechanical Variables Measurements - 801 Chemistry - 731.4 System Stability - 731.1 Control Systems - 671.1 Ship Design - 601.2 Machine Components - 423.2 Non Mechanical Properties of Building Materials: Test Methods - 406.2 Roads and Streets
DOI: 10.3969/j.issn.1000-1298.2010.10.001
Database: Compendex 6. Accession number: 20104813430820
Title: Experiment of subsoiling technique in apple orchard
Authors: Gao, Maosheng1 ; Xue, Shaoping2 ; Liao, Yuncheng3 ; Liu, Genquan4
Author affiliation: 1 College of Forestry, Northwest A and F University, Yangling, Shaanxi 712100, China
2 College of Mechanical and Electric Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
3 College of Agronomy, Northwest A and F University, Yangling, Shaanxi 712100, China
4 Luochuan Agriculture Science Institute, Luochuan 727400, China
Corresponding author: Liao, Y. (yunchengliao@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 35-39 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: The subsoiler drawn by walking tractor was designed, and the orchard contrast experiment was carried out. The result showed that the soil bulk density was decreased; the soil porosity condition was improved; the water content in soil was enhanced within 1m layer; the soil organic matter and soil total nitrogen also enhanced after subsoiled. The subsoiler special for walking tractor as a new type of orchard soil management measures in Weibei area will has good prospects for promotion.
Number of references: 19
Main heading: Soils
Controlled terms: Agronomy - Experiments - Orchards - Tractors (agricultural) - Tractors (truck) - Water content
Uncontrolled terms: Apple orchards - Contrast experiment - Orchard soils - Soil bulk density - Soil organic matters - Soil Porosity - Soil total nitrogen - Subsoiler - Walking tractor - Water content in soil
Classification code: 444 Water Resources - 483.1 Soils and Soil Mechanics - 663.1 Heavy Duty Motor Vehicles - 821.3 Agricultural Methods - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.10.007
Database: Compendex 7. Accession number: 20104813430854
Title: Dynamics analysis of 3PRR compliant parallel mechanism
Authors: Jia, Xiaohui1 ; Tian, Yanling1 ; Zhang, Dawei1
Author affiliation: 1 School of Mechanical Engineering, Tianjin University, Tianjin 300072, China
Corresponding author: Tian, Y. (meytian@tju.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 199-203
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 3-PRR compliant parallel mechanism utilizing flexure joints was proposed for 3-D nanomanipulation. Based on the assumed mode method, the passive link was modeled as Euler-Bernoulli beams with pinned-pinned boundary conditions to show the reason of the rigid equivalent. In order to analyze the effects of the inertia parameters of mobile platform and passive link, and the stiffness of flexure parts on the natural frequency of 3-PRR compliant parallel mechanism, the modified dynamics model of the 3-PRR flexure-based parallel mechanism was obtained by the Lagrange's formulation. The numerical simulations were carried out to validate the established model.
Number of references: 7
Main heading: Dynamics
Controlled terms: Computer simulation - Degrees of freedom (mechanics) - Lagrange multipliers - Mechanisms - Vibration analysis
Uncontrolled terms: Assumed-mode method - Dynamics analysis - Dynamics models - Euler Bernoulli beams - Flexure joints - Flexure-based parallel mechanism - Free vibration - Inertia parameters - Lagrange - Mobile platform - Nanomanipulations - Numerical simulation - Parallel mechanisms
Classification code: 601.3 Mechanisms - 723.5 Computer Applications - 921 Mathematics - 931.1 Mechanics - 943.2 Mechanical Variables Measurements
DOI: 10.3969/j.issn.1000-1298.2010.10.041
Database: Compendex 8. Accession number: 20104813430826
Title: Inner mechanical damage impact to germination of soybean kernels
Authors: Gao, Lianxing1 ; Li, Xiaofeng1 ; Jie, Xin1 ; Na, Xuejiao1 ; Zhang, Wen1 ; Du, Xin1
Author affiliation: 1 College of Engineering, Shenyang Agricultural University, Shenyang 110161, China
Corresponding author: Gao, L. (lianxing_gao@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 63-66 102
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 analysis inner mechanical damage mechanism of soybean seed and the impact to its germination, three mechanical threshed soybean varieties mainly cultivated in Liaoning Province were selected. By means of stereomicroscope system and germination test, the inner mechanical damage impact to germination were tested, and the results showed that soybean seed germination ratio with inner mechanical damage was lower than 10%, main inner damage forms were divided into cotyledon break, cotyledon crack, radicle crack and hypocotyl break, which has remarkable latent harmfulness to soybean production.
Number of references: 10
Main heading: Seed
Controlled terms: Agriculture - Cracks
Uncontrolled terms: Germination test - Inner damage - Liaoning Province - Mechanical damages - Soybean production - Soybean seeds
Classification code: 421 Strength of Building Materials; Mechanical Properties - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.4 Agricultural Products
DOI: 10.3969/j.issn.1000-1298.2010.10.013
Database: Compendex 9. Accession number: 20104813430824
Title: Analysis on the recovery rate of spraying of fluorescent tracers
Authors: Yuan, Xue1 ; Wang, Jun2 ; Zhou, Zhou3 ; Ji, Ronghua4 ; Qi, Lijun1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
3 Guangzhou Shipyard International Company Limited, Guangzhou 510382, China
4 College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Qi, L. (qilijun@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 54-57 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: The fluorescent is usually used as tracers for spraying deposit analysis in pesticide application study. The recovery rate of the tracers is significant for a reasonable explanation of the spraying performance. Experimental scheme was designed in this work and fluorescent was used as tracers. The scheme comprised of a few spraying factors and different environmental conditions. Rhodamine WT and fluorescein sodium were used for the recovery rate tests and weather condition, shading rate, sampling times and sampler feathers were considered as constraints. The experiments shown, on the condition of the same shading rate, sampling times and samplers, recovery rate of Rohdamine WT was higher than fluorescein sodium. If sampling time was fixed with the same deposition carrier, the increase of shading rate would increase the recovery rate of fluorescent tracer. If shading rate and deposition carriers were kept same, the increase of sampling time would decrease the recovery rate of fluorescent tracers. On the condition of the same shading rate and sampling time, filter papers were more suitable deposition carrier comparing to silver papers.
Number of references: 14
Main heading: Recovery
Controlled terms: Fluorescence - Organic polymers - Sampling - Sodium
Uncontrolled terms: Application studies - Environmental conditions - Experimental scheme - Filter papers - Fluorescein sodiums - Fluorescent tracers - Recovery rate - Rhodamine WT - Rohdamine WT - Sampling time - Weather conditions
Classification code: 531 Metallurgy and Metallography - 549.1 Alkali Metals - 741.1 Light/Optics - 801 Chemistry - 815.1.1 Organic Polymers
DOI: 10.3969/j.issn.1000-1298.2010.10.011
Database: Compendex 10. Accession number: 20104813430859
Title: Simulation on dynamic contact forces of punches in multi-point forming process
Authors: Chen, Xue1, 2 ; Li, Mingzhe1 ; Fu, Wenzhi1 ; Gong, Xuepeng1
Author affiliation: 1 Dieless Forming Technology Center, Jilin University, Changchun 130025, China
2 School of Mechanical Engineering, Beihua University, Jilin 132021, China
Corresponding author: Li, M. (limz@jlu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 223-226
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 mechanics model of multi-point die that contained complicate multi-contact surfaces was built by elastic-plastic finite element method, different materials with different thickness and deformations of spherical surface parts were simulated during the forming process, the variation histories of maximal contact forces of punches and their correlative factor were analyzed. The results indicated that the contact forces of punches became larger and larger along with the increase forming forces, when the elastic modulus and yield strength of material were bigger, the thickness and deformations of parts were also bigger.
Number of references: 10
Main heading: Computer simulation
Controlled terms: Building materials - Deformation - Finite element method - Plastic parts - Railroad rolling stock
Uncontrolled terms: Contact forces - Different thickness - Elastic-plastic finite element method - Forming forces - Forming process - Mechanics models - Multi-contact - Multi-point forming - Numerical simulation - ON dynamics - Punches - Spherical surface
Classification code: 921.6 Numerical Methods - 817.1 Polymer Products - 723.5 Computer Applications - 682.1 Railroad Rolling Stock, General - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 415 Metals, Plastics, Wood and Other Structural Materials - 414 Masonry Materials - 413 Insulating Materials - 412 Concrete - 411 Bituminous Materials
DOI: 10.3969/j.issn.1000-1298.2010.10.046
Database: Compendex 11. Accession number: 20104813430851
Title: Systematic recognition research of egg crack based on multi-sensor fusion
Authors: Liu, Peng1 ; Tu, Kang1 ; Pan, Leiqing1 ; Liu, Ming1 ; Zhan, Ge1
Author affiliation: 1 College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, 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: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 185-189 203
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 egg crack detection is one of the most important parts in the non-destructive detection of egg. The non-destructive testing parameters related the egg's external conventional cracks, the external minimal cracks and internal cracks were extracted through image analysis, impact excitation frequency analysis and electronic nose pattern recognition respectively. A non-destructive testing criterion was designed according to the eggs' cracks based on experimental research. The criterion was used to build the 'one-to-many' support vector discriminated model in eggs' crack combined with experiment data. Performance parameters of the model (the model fitting degree was 0.9735, the convergence error was less than 0.0001) and the confirmatory test (the discriminated accuracy in the five cracks status was more than 90%) indicates that the model has credible structure and good discriminated ability.
Number of references: 18
Main heading: Crack detection
Controlled terms: Artificial organs - Image processing - Nondestructive examination - Pattern recognition - Sensors - Support vector machines
Uncontrolled terms: Confirmatory test - Convergence errors - Discriminate model - Egg - Electronic NOSE - Experiment data - Experimental research - Impact excitation - Internal crack - Model fitting - Multi-sensor fusion - Non destructive testing - Nondestructive detection - Performance parameters - Support vector
Classification code: 421 Strength of Building Materials; Mechanical Properties - 462.4 Prosthetics - 716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 741 Light, Optics and Optical Devices - 801 Chemistry
DOI: 10.3969/j.issn.1000-1298.2010.10.038
Database: Compendex 12. Accession number: 20104813430850
Title: Spatial autocorrelation analysis of wheat yield over five years
Authors: Chen, Yunping1 ; Wang, Xiu2 ; Ma, Wei2 ; Zhao, Chunjiang2
Author affiliation: 1 School of Automation, University of Electronic Science and Technology of China, Chengdu 611731, China
2 National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
Corresponding author: Chen, Y. (chenyp@uestc.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 180-184
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: Spatial correlation of wheat yield and yield pattern changes under two weather scenarios had been analyzed using Moran's I and LISA. The results indicated there were most significant spatial autocorrelations among different yield patterns. Statistically, wheat yields were highly spatially correlated in cold years. With global and local spatial statistics, LISA map of yield differences in two weather patterns, stable and unstable yield areas were identified. Most significant spatial autocorrelations had been found in the northeast, west and south region. The northeast and west region of the field tended to be unstable, while the south region tended to be stable between different weather patterns.
Number of references: 16
Main heading: Autocorrelation
Uncontrolled terms: Different weathers - Pattern change - Spatial autocorrelations - Spatial correlations - Spatial statistics - Weather patterns - Wheat yield - Yield area
Classification code: 921 Mathematics - 922 Statistical Methods
DOI: 10.3969/j.issn.1000-1298.2010.10.037
Database: Compendex 13. Accession number: 20104813430823
Title: Design of the end-effector for plug seedlings transplanter and analysis on virtual prototype
Authors: Sun, Guoxiang1 ; Wang, Xiaochan1 ; He, Guomin1 ; Zhou, Ting1 ; Wang, Cheng2 ; Qiao, Xiaojun2
Author affiliation: 1 College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
2 National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
Corresponding author: Wang, X. (wright7878@yahoo.com.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 48-53 47
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 solve the problem of seedlings damaged and inefficiency of plug seedlings transplanter, the end-effector was redesigned. According to the actual operational requirements, SolidWorks was used to design the virtual prototype of end-effector. COSMOSMotion was used to analysis trajectory of mechanical finger and COSMOSWorks was used to analysis finite element model of matrix. It showed in motion simulation experiment that the horizontal displacement of the mechanical fingers was mainly affected by the slider displacement (Δh), while the vertical displacement was mainly affected by the initial angle (α) the mechanical fingers insert in. The forces generated by mechanical fingers distribute in the matrix block edge and won't damage the seedling stems. The experimental results showed that the success rate of transplanter was 95.76%, the rate of seedlings damaging was 3.06%, and it could meet the operational requirements of transplanting.
Number of references: 17
Main heading: Finite element method
Controlled terms: Design - Seed
Uncontrolled terms: Finite element models - Horizontal displacements - Initial angle - matrix - Matrix blocks - Motion simulations - Operational requirements - Plug seedling - SolidWorks - Transplanter - Vertical displacements - Virtual prototype
Classification code: 408 Structural Design - 821.4 Agricultural Products - 921.6 Numerical Methods
DOI: 10.3969/j.issn.1000-1298.2010.10.010
Database: Compendex 14. Accession number: 20104813430852
Title: Recognition and features extraction of sugarcane nodes based on machine vision
Authors: Lu, Shangping1 ; Wen, Youxian1 ; Ge, Wei2 ; Peng, Hui1
Author affiliation: 1 College of Engineering and Technology, Huazhong Agricultural University, Wuhan 430070, China
2 Market and Economic Information Department, Department of Agriculture of Guangxi Zhuang Autonomous Region, Nanning 530022, China
Corresponding author: Wen, Y. (wenyouxian@mail.hzau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 190-194
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 achieve machine intelligence cutting of effective sugarcane kinds of fragments with sugarcane bud, machine vision was introduced to identify sugarcane nodes. Through acquiring the S component of HSV color space by threshold, mathematical morphology filtering as template and the anti-phase image of the H-component by threshold was added to get synthesized image. Synthetic image was divided into 64 regions and obtained seven characteristic indicators, such as centroid ratio, roughness ratio and white point ratio, and so on. Then support vector machine was introduced to identify sugarcane nodes and sugarcane internodes. The average recognition rate of sugarcane nodes between internodes was 93.359%. Clustering analysis was introduced to identify sugarcane nodes blocks which were got by support vector machine (SVM) classification. The average recognition rates of the sugarcane numbers and the sugarcane nodes position were 94.118% and 91.522% respectively.
Number of references: 8
Main heading: Computer vision
Controlled terms: Artificial intelligence - Feature extraction - Mathematical morphology - Support vector machines - Vectors
Uncontrolled terms: Clustering - Clustering analysis - Features extraction - HSV color spaces - Machine intelligence - Machine vision - On-machines - Phase image - Recognition - Recognition rates - Roughness ratio - Synthesized images - Synthetic images - White point
Classification code: 716 Telecommunication; Radar, Radio and Television - 723 Computer Software, Data Handling and Applications - 921 Mathematics - 921.1 Algebra
DOI: 10.3969/j.issn.1000-1298.2010.10.039
Database: Compendex 15. Accession number: 20104813430849
Title: Automatic collecting system of agro-meteorology information based on remote monitoring technique
Authors: Wu, Yongfeng1 ; Gong, Zhihong2 ; Liu, Buchun1 ; Li, Maosong3 ; Lu, Ming4
Author affiliation: 1 Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China
2 College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
3 Key Laboratory of Agro-Environment and Climate Change, Ministry of Agriculture, Beijing 100081, China
4 College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
Corresponding author: Wu, Y. (mywyfe@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 174-179
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 view of the shortages of traditional agro-meteorological observations and current automatic collecting techniques based on the sensors, an automatic collecting system of agro-meteorology information was built based on remote monitoring technique. Its total devices were composed of collecting front of the field microclimate, collecting front of the video, data collecting device, data transmission device and power equipment. The system highly integrated collection and transmission of the field microclimate data and video information, and automatically collected precipitation, air temperature, air humidity, wind speed, wind direction, photosynthetic active radiation, soil temperature, soil moisture and crop video information. The remote client software could achieve a real-time dynamic display and remote monitoring for all information. The test in Zhengzhou, Hebi, Wenjiang and Jingzhou stations showed that the system had a good performance in automatic collection, integrated transmission, real-time dynamic display and remote monitoring. It provided the basis for automatic identification, disasters information extracting and even crop yields estimation.
Number of references: 12
Main heading: Monitoring
Controlled terms: Automation - Crops - Data acquisition - Data communication equipment - Meteorology - Remote control - Soil moisture - Soil surveys
Uncontrolled terms: Agrometeorology - Air humidity - Air temperature - Automatic identification - Collecting system - Crop yield - Data collecting - Data transmission - Highly integrated - Information extracting - Meteorological observation - Microclimate data - Photosynthetic active radiations - Power equipment - Real-time dynamics - Remote clients - Remote monitoring - Soil temperature - Video information - Wind directions - Wind speed
Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 731.1 Control Systems - 732 Control Devices - 821.4 Agricultural Products - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 731 Automatic Control Principles and Applications - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 483.1 Soils and Soil Mechanics - 443 Meteorology - 723.2 Data Processing and Image Processing
DOI: 10.3969/j.issn.1000-1298.2010.10.036
Database: Compendex 16. Accession number: 20104813430822
Title: Design of rice bud seed sowing and fertilizer machine
Authors: Xia, Junfang1 ; Xu, Qichuan1 ; Wang, Zhishan1 ; Zhou, Yong1
Author affiliation: 1 College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author: Xia, J. (xjf@mail.hzau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 44-47
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: 2BFS-8 rice planting fertilizer machine was developed and it could level the paddy fields, open the furrow, form the ridge, sow, fertilize, press down the seeds and fertilizer simultaneously according to the requirement of rice planting. Seeds were drilled in the ridge and fertilizer was manured in the fertilizer ditch. Improved seed metering device could effectively prevent the clogging of rice seeds. The ditch system enabled the effective management of water and fertilizer to the paddy fields. Laboratory and field tests showed that this machine has fully reached the relevant national standards requirement.
Number of references: 8
Main heading: Seed
Controlled terms: Fertilizers - Machine design - Water management
Uncontrolled terms: Direct-seeding - Effective management - Field test - National standard - Paddy fields - Rice bud seed - Rice seed - Seed metering devices - Seed sowing - Sowing and fertilizer machine - Test
Classification code: 444 Water Resources - 446 Waterworks - 601 Mechanical Design - 804 Chemical Products Generally - 821.4 Agricultural Products
DOI: 10.3969/j.issn.1000-1298.2010.10.009
Database: Compendex 17. Accession number: 20104813430836
Title: Influence of extrusion system parameters on fiber content of maize straw
Authors: Zhao, Fengqin1 ; Shen, Dechao2
Author affiliation: 1 College of Engineering, Shenyang Agricultural University, Shenyang 110161, China
2 School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
Corresponding author: Zhao, F. (fqinzhao@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 112-116
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 problem that low fiber utilization in the alcohol process from maize straw, the influence of extrusion system parameters on fiber content of maize straw (cellulose, hemicellulose and lignin) through square combination experiment of five factors and five levels with orthogonal rotation by the single extruder, these parameters include the nozzle's gap(B), distance(δ) between screw end and internal surface of die, the temperature(T) of sleeve, the screw speed(N) and straw moisture(W). The optimum values of parameters of extrusion system were put out. They were as follows: B=4 mm, δ=5 mm, T=120°C, N=90 r/min, W=20%, and on the optimums parameters, fiber content of maize straw were follows: cellulose content is 35.11%, hemicellulose content is 31.83%, lignin content is 6.77%. If the parameters of extrusion system were selected reasonably, the test results could provided certain reference for extruding pretreatment process of producing alcohol by straw fiber.
Number of references: 11
Main heading: Fibers
Controlled terms: Cellulose - Cements - Extrusion - Lignin - Optimization - Process control - Screws
Uncontrolled terms: Cellulose content - Fiber content - Fiber contents - Internal surfaces - Lignin contents - Maize straw - Optimum value - Pretreatment process - Process optimization - Screw speed - Test results
Classification code: 817 Plastics and Other Polymers: Products and Applications - 815.1.1 Organic Polymers - 812 Ceramics, Refractories and Glass - 921.5 Optimization Techniques - 731 Automatic Control Principles and Applications - 535.2.2 Metal Forming Practice - 412.1 Cement - 605 Small Tools and Hardware
DOI: 10.3969/j.issn.1000-1298.2010.10.023
Database: Compendex 18. Accession number: 20104813430819
Title: Tillage soil protection of black soil zone in northeast of China based on analysis of conservation tillage in the United States
Authors: Jia, Honglei1 ; Ma, Chenglin1 ; Li, Huizhen1 ; Chen, Zhongliang2
Author affiliation: 1 Key Laboratory of Bionic Engineering, Jilin University, Changchun 130025, China
2 Jilin Provincial Science and Technology Department, Changchun 130051, China
Corresponding author: Ma, C. (chenglma@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 28-34
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 black soil layers in the northeast of China undergo serious erosion. In order to seek an effective way to control soil and water loss in the area, the practical experiences in conservation tillage in the United States were introduced for analysis including the general situation of development, effects and challenges encountered. Popular modes there such as no tillage, strip tillage, zone tillage, vertical tillage, mulch tillage, and ridge tillage as well as the related implements were outlined. That is helpful for understanding conservation tillage itself, handling residue management, deep chiseling and pest or weed control. That may also serve as references while making reform and innovation of tillage modes and selecting tillage soil protection measures in the northeast of China.
Number of references: 15
Main heading: Soil conservation
Controlled terms: Agricultural machinery - Agriculture - Environmental protection - Erosion - Plants (botany) - Soils - Weed control
Uncontrolled terms: Black soil - Conservation tillage - General situation - No tillage - Practical experience - Residue management - Ridge tillage - Soil and water loss - Soil erosion - Soil Protection
Classification code: 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 803 Chemical Agents and Basic Industrial Chemicals - 483.1 Soils and Soil Mechanics - 821.1 Agricultural Machinery and Equipment - 483 Soil Mechanics and Foundations - 454.2 Environmental Impact and Protection - 407 Maritime and Port Structures; Rivers and Other Waterways - 461.9 Biology
DOI: 10.3969/j.issn.1000-1298.2010.10.006
Database: Compendex 19. Accession number: 20104813430831
Title: Contact simulation on loose material and cone-shaped silo
Authors: Wang, Xuewen1 ; Shu, Xuefeng2 ; Yang, Zhaojian1
Author affiliation: 1 College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2 Institute of Applied Mechanics, Taiyuan University of Technology, Taiyuan 030024, China
Corresponding author: Wang, X. (wxuew@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 86-90
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 Drucker-Prager yield criterion and finite element method, the contact mathematical model was established on wheat and a type of cone-shaped steel-sheet silo. These requirements on the contact surface were solved of the displacement conditions, the pressure transfer and the relations between the pressure and the displacement. Through establishing solving equations and calculation procedures, the reliable results were offered, using Lagrange's method of multiplier and penalty function method. The results showed that the contact friction stress was small and associated with the contact state. The total contact stress was mainly contact pressure which was increased gradually from the top to the bottom of the silo and showed itself a non-linear relationship.
Number of references: 14
Main heading: Finite element method
Controlled terms: Mathematical models - Steel sheet
Uncontrolled terms: Calculation procedure - Contact analysis - Contact friction - Contact pressures - Contact simulation - Contact state - Contact Stress - Contact surface - Drucker Prager yield criterion - Lagrange's method - Loose materials - Non-linear relationships - Penalty function methods - Pressure transfer - Wheat
Classification code: 545.3 Steel - 921 Mathematics - 921.6 Numerical Methods
DOI: 10.3969/j.issn.1000-1298.2010.10.018
Database: Compendex 20. Accession number: 20104813430817
Title: Optimization design of car body based on sensitivity and side crash simulation
Authors: Ye, Hui1 ; Hu, Ping2 ; Shen, Guozhe2 ; Sun, Hongtu2 ; Liu, Bo3 ; Zhou, Dinglu3
Author affiliation: 1 State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130025, China
2 School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China
3 Changan Academy of Automotive Engineering, Chongqing 401122, China
Corresponding author: Ye, H. (yehuijlu@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 18-22 27
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 lightweight about car body was developed based on the analysis of sensitivity and crashworthiness. First, the thickness of components on car body was used as design variables. The modal and stiffness of car body were the constraint. The weight of car body was the objective of optimization. The sensitivity of the thickness about modal and stiffness was obtained. Based on this sensitivity, the components whose thickness was not sensitive to modal and stiffness of car body were selected as the design variables. Using these design variables, the optimization design was carried out with the minimize weight of car body as objective. The result of optimization made 14.8 kg weight reduction of car body, and guaranteed the performance of stiffness and modal. The simulations of side crash including whole car and occupant restraint system were carried out to the car after lightweight. The performance of crashworthiness and occupant restraint system was validated through comparing the results of before and after lightweight. In order to make the lightweight car body satisfied the requirement of crashworthiness, the thickness of components was modified again according to the results of side crash. The results showed the feasibility of the lightweight method based on sensitivity and side crash simulation.
Number of references: 7
Main heading: Automobile bodies
Controlled terms: Crashworthiness - Design - Optimization - Railroad cars - Sensitivity analysis - Stiffness
Uncontrolled terms: Before and after - Car bodies - Crash simulation - Design variables - Lightweight - Occupant restraint system - Optimization design - Sensitivity - Side crash - Weight reduction
Classification code: 951 Materials Science - 921.5 Optimization Techniques - 921 Mathematics - 914.1 Accidents and Accident Prevention - 682.1.1 Railroad Cars - 663.2 Heavy Duty Motor Vehicle Components - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 408 Structural Design
DOI: 10.3969/j.issn.1000-1298.2010.10.004
Database: Compendex 21. Accession number: 20104813430835
Title: Flow characteristics of straw with coal in draft tube spouted bed
Authors: Liu, Weimin1 ; Zhang, Jian1 ; Liu, Jun1 ; Wang, Liqun2 ; Zhao, Rujin3 ; Zhao, Jiewen1
Author affiliation: 1 School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
2 School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
3 School of Environmental Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Liu, W. (liuwmwu@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 107-111
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 develop a draft tube spouted bed (DTSB) for gasification of straw with coal, flow characteristics of the mixture in DTSB before co-gasificating should be studied to get the spouting conditions. The relationship of pressure drop of the bed with superficial air velocity was analyzed, as well as the effects of various parameters such as proportion of mixture, jet diameter and draft tube jet distance (DTJD) on it and the relationship of the circulating rate of the mixture with superficial air velocity. Three regression equations were got by U12(123) uniform design experiments and multiple variable linear regression using SPSS. The dependent in these equations's was circulating rate of the mixture, pressure drop of unit material height, circulating rate of the mixture of per effective power respectively and the independents were all of proportion of mixture, spout diameter and DTJD. Three equations can be used to forecast hydrodynamic parameters of the mixture in the DTSB.
Number of references: 11
Main heading: Mixtures
Controlled terms: Electric load forecasting - Gasification - Hydraulic turbines - Pressure drop
Uncontrolled terms: Air velocities - Circulating rates - Draft tube spouted bed - Draft tubes - Flow characteristic - Hydrodynamic parameters - Jet diameter - Regression equation - Spouted bed - Uniform Design
Classification code: 617.1 Hydraulic Turbines - 706.1 Electric Power Systems - 802.3 Chemical Operations - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.10.022
Database: Compendex 22. Accession number: 20104813430827
Title: Design and test on the coaxial differential-speed axial-flow threshing rotor of combine harvester
Authors: Chen, Ni1 ; Xiong, Yongsen1 ; Chen, Dejun1 ; Xu, Jinda2 ; Zhao, Yun1
Author affiliation: 1 College of Mechanical and Electrical Engineering, Jinhua College of Profession and Technology, Jinhua 321000, China
2 Jinhua Agricultural Machinery Research Institute, Jinhua 321000, China
Corresponding author: Chen, N. (cyiny@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 67-71
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: Principle of coaxial differential threshing and it's design schemer was proposed. Axial distribution curve and mathematical model of threshing mixture were established in the case of single speed threshing and differential speed threshing by means of Matlab on the basis of experiments. Results showed that grain total percentage of damage was 0.67%, the quantity of impurity with grain was 8.63% of total mixture quantity, the grain loss rate of unthreshed head and lined grain was 0.76%, which reduced by 40.9%, 29.5% and 32.15% of the single speed rotor. Differential threshing quality was better than single one. Coaxial differential threshing units integrated with the beneficial effects of high-speed threshing and slow-speed threshing, which could reduce grain loss rate, damage rate, impurity rate of three performance indicators synchronously and achieve better level.
Number of references: 14
Main heading: Agriculture
Controlled terms: Benchmarking - Combines - Design - Experiments - Harvesters - Mathematical models - Speed
Uncontrolled terms: Axial distribution - Beneficial effects - Coaxial differential - Combine harvester - Combine harvesters - Damage rate - Design and tests - High-speed - Loss rates - Performance indicators - Threshing rotor - Threshing units
Classification code: 921 Mathematics - 913 Production Planning and Control; Manufacturing - 912 Industrial Engineering and Management - 931.1 Mechanics - 901.3 Engineering Research - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 408 Structural Design - 821.1 Agricultural Machinery and Equipment
DOI: 10.3969/j.issn.1000-1298.2010.10.014
Database: Compendex 23. Accession number: 20104813430838
Title: Forecast model of apple storage time based on CT technology and image processing
Authors: Zhang, Jingping1 ; Chen, Rui1 ; Liu, Kongxuan1
Author affiliation: 1 College of Biosystem Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
Corresponding author: Zhang, J. (zhjpzhjp@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 122-125
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: Computed tomography(CT) images and histograms scanned of Fushi apples in different storage time were compared and analyzed. It's found that the images were getting brighter with the storage time increased and the right peaks of the histogram were moving right. The average gray value of the CT images was calculate to design a simple and fast image processing algorithm. The linear relationship was established between the average gray value and the storage time. The prediction error of the model was low and the average prediction error was 1.08 d.
Number of references: 15
Main heading: Computerized tomography
Controlled terms: Forecasting - Fruits - Graphic methods - Image processing - Imaging systems - Nondestructive examination - Statistical methods
Uncontrolled terms: Apple - Average prediction error - Computed Tomography - CT Image - CT technology - Fast image processing - FORECAST model - Gray value - Linear relationships - Non-destructive test - Prediction errors - Storage periods - Storage time
Classification code: 902.1 Engineering Graphics - 821.4 Agricultural Products - 801 Chemistry - 922.2 Mathematical Statistics - 746 Imaging Techniques - 531 Metallurgy and Metallography - 421 Strength of Building Materials; Mechanical Properties - 741 Light, Optics and Optical Devices
DOI: 10.3969/j.issn.1000-1298.2010.10.025
Database: Compendex 24. Accession number: 20104813430837
Title: Prediction model of thermal conductivities of fruits and vegetables based on BP neural networks
Authors: Zhang, Min1 ; Zhong, Zhiyou1 ; Yang, Le1 ; Zhao, Huizhong2 ; Chen, Jianhua1 ; Che, Zhenhua1
Author affiliation: 1 College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
2 School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
Corresponding author: Zhang, M. (zhangm@shou.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 117-121 116
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 relationships between thermal conductivities and soluble solid contents, water contents, temperature, density and hardness of 30 types fruits and vegetables were studied by the tepid probe test system. A BP artificial neural network model was presented and optimized for the prediction of thermal conductivities of fruits and vegetables according to the error analysis. The result showed that the optimal model was able to predict thermal conductivity with a mean relative error of 1.11%, a mean absolute error of 0.0057 W/(m·K). The model can be incorporated in heat transfer calculations during fruits and vegetables processing.
Number of references: 15
Main heading: Neural networks
Controlled terms: Carbon fiber reinforced plastics - Error analysis - Forecasting - Fruits - Mathematical models - Optimization - Speech recognition - Thermal conductivity - Thermal conductivity of solids - Thermoanalysis - Vegetables
Uncontrolled terms: BP artificial neural network - BP neural networks - Heat transfer calculations - Mean absolute error - Mean relative error - Optimal model - Prediction model - Soluble solid content - Test systems
Classification code: 921 Mathematics - 821.4 Agricultural Products - 817.1 Polymer Products - 933 Solid State Physics - 801 Chemistry - 723.4 Artificial Intelligence - 641.2 Heat Transfer - 723.5 Computer Applications
DOI: 10.3969/j.issn.1000-1298.2010.10.024
Database: Compendex 25. Accession number: 20104813430848
Title: Design and test of the vacuum suction device for tomato harvesting robot
Authors: Liu, Jizhan1 ; Li, Pingping1 ; Ni, Qi2 ; Li, Zhiguo1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
2 Dresden University of Technology, Dresden 01062, Germany
Corresponding author: Liu, J. (liujizhan@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 170-173 184
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 vacuum suction device was developed to separate aimed tomato fruit from cluster in robotic harvesting, which took a mini air pump and a vacuum ejector as vacuum generation. Control strategy to this device was designed based on relationship between air supply pressure and vacuum pressure, pull-off force of the suction cup, and suction responding time. Experiments indicated that average time of one task and air consumption of this device were 1.5 s and 0.6 L, respectively. Success rate pulling fruit to reach horizontal 35 mm far distance was 92%. Power of the mini air pump could satisfy the need of fulfilling 360 fruits harvesting per hour.
Number of references: 10
Main heading: Vacuum technology
Controlled terms: Air ejectors - Experiments - Fruits - Harvesting - Machine design - Pumps - Robots - Vacuum
Uncontrolled terms: Air consumption - Air pumps - Air supply - Control strategies - Design and tests - Harvesting robot - Pull-off forces - Responding time - Suction cup - Tomato - Tomato fruits - Vacuum generation - Vacuum pressure - Vacuum suction - Vacuum suction device
Classification code: 821.4 Agricultural Products - 821.3 Agricultural Methods - 731.5 Robotics - 901.3 Engineering Research - 633 Vacuum Technology - 618.2 Pumps - 601 Mechanical Design - 618.3 Blowers and Fans
DOI: 10.3969/j.issn.1000-1298.2010.10.035
Database: Compendex 26. Accession number: 20104813430818
Title: Flatness ratio of flat hydrodynamic torque converter for passenger car
Authors: Liu, Chunbao1 ; Zhu, Xilin2 ; Ma, Wenxing1
Author affiliation: 1 State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130025, China
2 College of Engineering, Zhejiang Normal University, Jinhua 321004, China
Corresponding author: Ma, W. (mawx@jlu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 23-27
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: Hydrodynamic torque converters for passenger cars were designed with an increasingly narrower profile for the purpose of achieving smaller axial size that would cause the change of inner flow field and performances. Understanding the change rules under different flatness ratio could guide the design of flat torque converter. To investigate the change rules, four different flatness ratio torque converters were designed by means of bran-new flat torus design method and blade design method based on quadratic function distribution of momentum. Flatness ratio was also redefined, and then the change of flatness ratio can completely reflect the change of whole torus. The internal flow field of the flat torque converters was calculated by CFD software. The character of the flow field in pump, turbine and stator was analyzed in detail. Through the analysis, several valuable conclusions were educed. Based on the numerical solution, the performances of the flat torque converter were predicted. By comparing with the performances of different flatness ratio torque converters designed by same method, the influence of the flatness ratio of torque converter on hydrodynamic performance was found out.
Number of references: 6
Main heading: Torque
Controlled terms: Automobiles - Computational fluid dynamics - Design - Flow fields - Fluid dynamics - Hydraulic torque converters - Hydrodynamics - Passenger cars - Pumps
Uncontrolled terms: Blade design - CFD softwares - Design method - Flatness ratios - Hydrodynamic performance - Hydrodynamic torque converter - Hydrodynamic torque converters - Inner flow field - Internal flow field - Numerical solution - Quadratic function
Classification code: 682.1.1 Railroad Cars - 662.1 Automobiles - 631 Fluid Flow - 618.2 Pumps - 602 Mechanical Drives and Transmissions - 421 Strength of Building Materials; Mechanical Properties - 408 Structural Design
DOI: 10.3969/j.issn.1000-1298.2010.10.005
Database: Compendex 27. Accession number: 20104813430821
Title: Design and simulation of direct insert corn planting device of furrow seeder with whole plastic-film mulching on double ridges
Authors: Zhao, Jiantuo1 ; Zhao, Wuyun1 ; Ren, Yanhua2 ; Niu, Haihua1
Author affiliation: 1 College of Engineering, Gansu Agricultural University, Lanzhou 730070, China
2 Department of Mechanical and Electrical Engineering, Lanzhou Vocational Technical College, Lanzhou 730070, China
Corresponding author: Zhao, W. (zhaowy@gsau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 40-43 96
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 direct insert corn planting device with whole plastic-film mulching was designed on double ridges in dry land. The horizontal absolute velocity of hole-former was made zero at seeding time by using cam and crank combination mechanism to control it. The direct insert planting device was simulated to measure the hole-former's displacement, velocity and acceleration, with the cam designed based on relative path curves in the ADAMS/View. The simulation results showed that the seeding device met the requirement of design.
Number of references: 11
Main heading: Plastics
Controlled terms: Cams - Design
Uncontrolled terms: Corn planter - Corn planting - Design and simulation - Direct insert mechanism - Dry land - Path curves - Simulation - Simulation result - Whole plastic-film mulching
Classification code: 408 Structural Design - 601.3 Mechanisms - 817.1 Polymer Products
DOI: 10.3969/j.issn.1000-1298.2010.10.008
Database: Compendex 28. Accession number: 20104813430829
Title: Design and experiment of 4SY2 rape windrower
Authors: Jin, Chengqian1 ; Wu, Chongyou1 ; Jin, Mei1 ; Lu, Yan1 ; Yuan, Wensheng1 ; Tang, Zongyi1
Author affiliation: 1 Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
Corresponding author: Jin, C. (412114402@qq.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 76-79
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 solve the problem of lacking rape windrower in our country, 4SY-2 rape windrower was designed. The parameters of key components, such as the reel spoke, the cutting device, the conveyer and making swath device etc. were analyzed and confirmed. Experimental results showed that this machine had lower loss rate. The quality of swath could meet the requirements of the agronomy.
Number of references: 8
Main heading: Design
Controlled terms: Agriculture - Experiments
Uncontrolled terms: Key component - Loss rates - Rape windrower
Classification code: 408 Structural Design - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.10.016
Database: Compendex 29. Accession number: 20104813430815
Title: A fast identification method of vehicle longitudinal dynamic parameters for intelligent cruise control
Authors: Liu, Jiaxi1 ; Li, Shengbo1 ; Wang, Jianqiang1 ; Li, Keqiang1
Author affiliation: 1 State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Corresponding author: Li, K. (likq@tsinghua.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 6-10 5
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 obtain vehicle longitudinal dynamic parameters for intelligent cruise control (ICC) fast and at a low cost, a parameter identification method based on vehicle longitudinal dynamic model was proposed. Five kinds of road experiments, including standing still, coasting in neutral gear, coasting with engaged gear, driving with constant speed and braking, were designed for data collection. A Kalman filter was designed for data preprocessing. Such vehicle longitudinal dynamic parameters as rolling friction coefficient, aerodynamic coefficient, switching line between throttle and brake control, brake efficiency factor and engine speed characteristics were identified by using least square method. A vehicle longitudinal dynamic model was calibrated by the acquired parameters; the validity of the proposed identification method was demonstrated by the perfect coincidence of experiment data and model output.
Number of references: 7
Main heading: Longitudinal control
Controlled terms: Brakes - Dynamic models - Friction - Least squares approximations - Parameter estimation - Vehicles
Uncontrolled terms: Aerodynamic coefficients - Brake control - Constant speed - Data collection - Data preprocessing - Efficiency factor - Engine speed - Experiment data - Identification - Identification method - Intelligent cruise control - Least square methods - Longitudinal dynamics - Low costs - Model outputs - Parameter identification - Rolling friction - Switching lines
Classification code: 931.1 Mechanics - 921.6 Numerical Methods - 921 Mathematics - 731.3 Specific Variables Control - 731.1 Control Systems - 602 Mechanical Drives and Transmissions - 432 Highway Transportation
DOI: 10.3969/j.issn.1000-1298.2010.10.002
Database: Compendex 30. Accession number: 20104813430846
Title: Optimization of perry fermentation technology conditions
Authors: Zhang, Dawei1, 2 ; Dong, Wenbin1 ; Zhang, Jie2 ; Wang, Nengqiang2
Author affiliation: 1 College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
2 School of Life Science, Hunan University of Science and Technology, Xiangtan 411201, China
Corresponding author: Zhang, D. (zdavid_77@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 159-164 179
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 alcohol yield of Saccharomyces cerevisiae DJ02, the preliminary fermentation conditions were optimized by single factor test. The results indicated that the fermentation conditions were: agar volume 80mL, inoculum concentration 11%, initial pH value 5.5, temperature 20°C, fermentation time 8d. The influence of twenty kinds of Chinese herbs, such as Pericarpium citri reticulatae, as promoting factors on the alcohol yield of Saccharomyces cerevisiae DJ02 was investigated. The influence of six kinds of Chinese herbs including Amomum villosum Lour on the alcohol yield of Saccharomyces cerevisiae DJ02 were significant. The optimum fermentation conditions were determined by plackett-Burman design and response surface analysis. The optimum level of these fermentation conditions were: temperature 22°C, culture volume 75.0 mL, pH value 5.71, fermentation time 8d, Amomum villosum Lour concentration 1.0%. The alcohol yield of Saccharomyces cerevisiae DJ02 was 16.92%, which was enhanced 23.7%.
Number of references: 10
Main heading: Yeast
Controlled terms: Fermentation - Medicine - Optimization - pH effects - Surface analysis - Surface properties
Uncontrolled terms: Chinese herbs - Initial pH value - Perry - pH value - Plackett-Burman designs - Response surface - Response surface analysis - Saccharomyces cerevisiae - Technology condition
Classification code: 951 Materials Science - 921.5 Optimization Techniques - 801.2 Biochemistry - 801.1 Chemistry, General - 461.8 Biotechnology - 461.6 Medicine and Pharmacology - 423 Non Mechanical Properties and Tests of Building Materials
DOI: 10.3969/j.issn.1000-1298.2010.10.033
Database: Compendex 31. Accession number: 20104813430845
Title: Saccharification experiments of extruded at low temperature rice beer adjunct with enzyme preparation added
Authors: Shen, Dechao1 ; Wang, Gouqing2 ; Ma, Chengye1
Author affiliation: 1 School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
2 Shandong Aluminum Vocational College, Zibo 255065, China
Corresponding author: Shen, D. (shendc@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 152-158
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 starch degradation process extruded at low temperature rice beer adjunct with enzyme preparation added in extruder and the influence regularity of main parameters in rice beer adjunct with added high temperature resistant α-amylase extruded at low temperature on main observed indexes for extruded rice adjunct with above amylase added were analyzed. The research results at the beer brewery indicated that the recoverable ratio of wort extract for extruded rice adjunct with enzyme preparation added was 2.10%-3.57% more than that of traditional rice adjunct without extruded and the rice beer adjunct with added enzyme preparation extruded at low temperature was not agglomerated in the water when mashed. Meanwhile the working procedure of traditional beer adjunct boiled at 100°C was omitted.
Number of references: 21
Main heading: Experiments
Controlled terms: Enzymes - Extrusion - Saccharification
Uncontrolled terms: Enzyme preparation - High-temperature resistant - Low temperatures - Main parameters - Research results - Rice - Starch degradation - Working procedure
Classification code: 535.2.2 Metal Forming Practice - 804.1 Organic Compounds - 811.3 Cellulose, Lignin and Derivatives - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.10.032
Database: Compendex 32. Accession number: 20104813430833
Title: Comparison on characterization effect of biomass pellet fuels on combustion behavior
Authors: Yao, Zonglu1 ; Zhao, Lixin1 ; Ronnback, M2 ; Meng, Haibo1 ; Luo, Juan1 ; Tian, Yishui1
Author affiliation: 1 Institute of Energy and Environmental Protection, Chinese Academy of Agricultural Engineering, Beijing 100125, China
2 Energy Department, SP Technical Research Institute of Sweden, Boras 50115, Sweden
Corresponding author: Tian, Y. (yishuit@yahoo.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 97-102
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: Ten types of biomass pellet fuels from China and Sweden were analyzed according to European solid biofuel standards (CEN/TC 335), and the differences in characteristics were analyzed between straw pellet fuel in China and wood pellet fuel from Sweden. The results showed that the biomass pellet fuels from China and Sweden satisfied the standard requirement and the wood pellets from Sweden had highest quality. The calorific value of pellet made from corn straw in China was 20.9% lower and the Si content was 20% higher in the ash and slag after combustion than that of Swedish wood pellets. This indicated that the biomass pellet fuels from China have more ash and more easily form slag during combustion. "Chinese" crop pellets with higher ash content and increased risk for slagging will require high quality combustion equipment to ensure high availability.
Number of references: 15
Main heading: Pelletizing
Controlled terms: Biomass - Combustion - Combustion equipment - Ore pellets - Slags - Wood fuels
Uncontrolled terms: Bio-mass energy - Chemical composition - Combustion behavior - Pellet fuels - Physical characterization
Classification code: 525.1 Energy Resources and Renewable Energy Issues - 524 Solid Fuels - 521.2 Combustors - 533.1 Ore Treatment - 521.1 Fuel Combustion - 412 Concrete - 406 Highway Engineering - 413 Insulating Materials
DOI: 10.3969/j.issn.1000-1298.2010.10.020
Database: Compendex 33. Accession number: 20104813430853
Title: Tree image mosaicing system based on featured area matching
Authors: Zhou, Bo1 ; Zheng, Jiaqiang1 ; Zhou, Hongping1
Author affiliation: 1 College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China
Corresponding author: Zheng, J. (jqzheng@njfu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 195-198 208
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 tree image mosaicing was analyzed by template extraction and featured matching point searching. The template was obtained through tree image segmentation, image grey processing and image gradient processing. Then the matching featured point was searched and determined by similarity measure evaluation. With the relationship between template radius and the success rate of mosaicing, the relationship between template radius and the mosaicing of time, the success rate of 94.9% and 174ms each time were achieved. A tree image real time mosaicing was provided for expanding the field-of-view in precision pesticide target-oriented-spraying technique.
Number of references: 12
Main heading: Image matching
Controlled terms: Image segmentation
Uncontrolled terms: Area matching - Image mosaicing - Similarity measurements - Template extraction - Tree
Classification code: 741 Light, Optics and Optical Devices - 741.1 Light/Optics
DOI: 10.3969/j.issn.1000-1298.2010.10.040
Database: Compendex 34. Accession number: 20104813430844
Title: Effect of high-temperature heat treatment on microwave dielectric properties and qualities of mixed edible oil
Authors: Lü, Junfeng1 ; Guo, Wenchuan1 ; Yu, Xiuzhu2
Author affiliation: 1 College of Mechanical and Electric Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
2 College of Food Science and Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
Corresponding author: Guo, W. (guowenchuan69@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 148-151 169
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 open-ended coaxial technology was used to measure microwave dielectric properties and quality indices of heated mixed edible oil at 120-240°C for 3-15 h over the frequency range from 200 to 4500 MHz. Results showed that, without high-temperature heating, the relative dielectric constant and loss factor of the oil would change with frequency, but kept constant generally when the oil was heated. The dielectric constant of heated oil was lower and the loss factor was higher than that of unheated oil. The high-temperature and heating time had small effect on permittivities. When the temperature was higher than 180°C, the acid value increased with heating time, but the time had obvious effect to peroxide value when the temperature was 120°C.
Number of references: 9
Main heading: Permittivity
Controlled terms: Acids - Dielectric devices - Dielectric losses - Electric insulation testing - Heating - Oils and fats
Uncontrolled terms: Dielectric loss factors - Edible oil - High-temperature treatment - Quality - Relative dielectric constant
Classification code: 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 714 Electronic Components and Tubes - 804.1 Organic Compounds - 708.1 Dielectric Materials - 701 Electricity and Magnetism - 643.1 Space Heating - 704 Electric Components and Equipment
DOI: 10.3969/j.issn.1000-1298.2010.10.031
Database: Compendex 35. Accession number: 20104813430856
Title: Improved algorithm of frequency heterodyne empirical mode decomposition
Authors: Hu, Hongying1, 2 ; Yin, Fuliang1
Author affiliation: 1 School of Electronics and Information Engineering, Dalian University of Technology, Dalian 116023, China
2 College of Electromechanical and Information Engineering, Dalian Nationalities University, Dalian 116600, China
Corresponding author: Yin, F. (flyin@dlut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 207-213
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: Two individual components in a signal with frequencies within an octave usually can't be decomposed by normal empirical mode decomposition (EMD) method. In order to improve the frequency resolution, an improved method based on frequency heterodyne EMD was presented. The proposed method enlarged the frequency difference of components to reach the identifying level of EMD. Moreover, the frequencies of components can't be turnover with the frequency heterodyne EMD method. The applications in backlash nonlinearity system analysis and rotor complex fault diagnosis showed that the proposed method could improve the resolution of EMD with high accuracy and proved to be feasible.
Number of references: 9
Main heading: Heterodyning
Controlled terms: Power quality
Uncontrolled terms: Backlash nonlinearity - Complex fault diagnosis - EMD method - Empirical Mode Decomposition - Frequency differences - Frequency heterodyne - Frequency resolutions - Improved algorithm - Improved methods - Individual components - System analysis
Classification code: 706.1.2 Electric Power Distribution - 716 Telecommunication; Radar, Radio and Television
DOI: 10.3969/j.issn.1000-1298.2010.10.043
Database: Compendex 36. Accession number: 20104813430843
Title: Effect of pectinase processing parameters on sensory quality and aroma components of apple juice
Authors: Li, Hua1 ; Li, Min2 ; Yue, Tianli2
Author affiliation: 1 College of Enology, Northwest A and F University, Yangling, Shaanxi 712100, China
2 College of Food Science and Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
Corresponding author: Yue, T. (yuetl@nwsuaf.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 143-147
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 effect of pectinase processing parameters, including enzyme dosage, hydrolysis temperature and hydrolysis time, for apple juice on its sensory quality and aroma component was conducted using response surface methodology. The results show that enzyme hydrolysis time and dosage had a significant effect on the sensory quality of apple juice (P<0.01). The influencing sequence from high to low are as follows: enzyme hydrolysis time, enzyme dosage, enzyme hydrolysis temperature. In conclusion, we recommended that the optimum pectinase processing parameter for apple juice is 0.04 g/L pectinase at 47.5°C for 2.77h. Moreover, we constructed a regression model between the main aroma components of apple juice, esters, alcohols, acids, aldehydes and ketones, and processing parameters by headspace solid-phase micro-extraction method and multiple regression analysis.
Number of references: 19
Main heading: Fruits
Controlled terms: Acids - Aldehydes - Enzymes - Esters - Fruit juices - Hydrolysis - Ketones - Regression analysis - Surface properties
Uncontrolled terms: Apple juice - Aroma components - Pectinases - Response Surface Methodology - Sensory qualities
Classification code: 922.2 Mathematical Statistics - 822.3 Food Products - 821.4 Agricultural Products - 951 Materials Science - 804.1 Organic Compounds - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 804 Chemical Products Generally
DOI: 10.3969/j.issn.1000-1298.2010.10.030
Database: Compendex 37. Accession number: 20104813430847
Title: Characterization of AlxOy barrier films on PET substrate prepared by magnetron sputtering
Authors: Liu, Zhuang1, 2 ; Lin, Jing1 ; Sun, Zhihui1
Author affiliation: 1 School of Light Industry, Harbin University of Commerce, Harbin 150028, China
2 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Corresponding author: Liu, Z. (hitprint@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 165-169
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: Aluminum oxide (AlxOy) films were deposited on the polyethylene terephthalate (PET) foils as barrier coatings using conventional DC magnetron sputtering, in which argon, oxygen and pure aluminum were used as a sputtering gas, reaction gas and target, respectively. The influences of oxygen and argon flux ratios on the surface morphology, stoichiometry and structure of AlxOy films were investigated. The mechanic and barrier properties of AlxOy/PET were discussed, too. Fourier transform infrared spectrum (FTIR) and X-ray photoelectron spectroscopy (XPS) investigations indicated that a strong relation between oxygen addition and compositions of AlxOy films, the aluminum oxide IR spectrum's peak value, the intensity and the band width. Also, the Al-O expansion vibration peak's wave number was proportional to the oxygen atom content in AlxOy. The studies about films barrier and mechanical characteristics demonstrated when the ratio of y and x in AlxOy film was closer to 1.5, the barrier property was better and horizontal, vertical elastic modulus and yield strength were greater. In addition, the mechanical characteristics of AlxOy/PET films significantly changed as the films were stretched, there were two significant turning points in stress-strained curve.
Number of references: 10
Main heading: Gas permeable membranes
Controlled terms: Aluminum - Aluminum coatings - Argon - Fourier transforms - Magnetron sputtering - Mechanical properties - Oxide films - Oxides - Oxygen - Polyethylene terephthalates - Spectroscopy - Stoichiometry - Thermoplastics - X ray photoelectron spectroscopy
Uncontrolled terms: AlxOy/PET - Aluminum oxides - Argon flux - Barrier - Barrier coatings - Barrier films - Barrier properties - Conventional dc magnetron sputtering - Fourier transform infrared spectrums - IR spectrum - Mechanical characteristics - Oxygen addition - Oxygen atom - Peak values - PET films - PET substrate - Pure aluminum - Reaction gas - Sputtering gas - Turning points - Vibration peak - Wave numbers - Yield strength
Classification code: 951 Materials Science - 921.3 Mathematical Transformations - 815.1.1 Organic Polymers - 813.2 Coating Materials - 813.1 Coating Techniques - 804 Chemical Products Generally - 802.1 Chemical Plants and Equipment - 801.4 Physical Chemistry - 801 Chemistry - 712.1.2 Compound Semiconducting Materials - 541.1 Aluminum
DOI: 10.3969/j.issn.1000-1298.2010.10.034
Database: Compendex 38. Accession number: 20104813430830
Title: Design and experiment on cotton stalk pulling head with regardless of row
Authors: Tang, Zunfeng1 ; Han, Zengde1 ; Gan, Bangxing1 ; Bao, Chunlin1 ; Hao, Fuping1
Author affiliation: 1 Modern Agricultural Equipment Co., Ltd., Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Tang, Z. (tangzunfeng@sohu.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 80-85
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: Because of variety of cotton row spacing, there were some problems on cotton stalk pulling machine such as smaller using scope, lower efficiency and function singleness etc. In order to solve the problems, a new cotton stalk pulling head with regardless of row which could rearrange cotton and separate soil was designed. The whole structure and operating principles of the pulling head were introduced, and the critical components were designed by theoretical analysis and calculations. The main performance indexes of a prototype were measured by field tests. The results indicated that production coefficient was 0.8hm2/h and pulling rate was 97.7%, when rotational speed of the pulling roller was 502 r/min and advance speed was 0.93 m/s, and all main parameter indexes reached their design requirements.
Number of references: 8
Main heading: Machine design
Controlled terms: Cotton - Experiments
Uncontrolled terms: Cotton stalk - Critical component - Design requirements - Field test - Main parameters - Operating principles - Performance indices - Pulling - Pulling rates - Regardless of row - Rotational speed - Row spacing
Classification code: 601 Mechanical Design - 819.1 Natural Fibers - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.10.017
Database: Compendex 39. Accession number: 20104813430839
Title: Critical temperature of sublimation interface in freeze-drying
Authors: Zuo, Jianguo1 ; Li, Weizhong1 ; Weng, Lindong1
Author affiliation: 1 School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China
Corresponding author: Zuo, J. (jgzuo@dlut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 126-128 133
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: Freeze-drying microscopy (FDM) was used to investigate the critical temperature (Tcr) of sublimation interface during freeze-drying of binary aqueous solutions, and differential scanning calorimetry (DSC) was used to investigate the eutectic melting temperature (Tem) and the glass transition temperature of the maximally freeze concentrated solution (T'g). The experimental results showed that if a solute crystallized from solution during freezing step, the critical temperature was the eutectic melting temperature, or else a meltback would occur. If the solute remained amorphous during the freezing process, the critical temperature was the collapse temperature, or else the amorphous phase would undergo viscous flow. For 5% Sucrose, 10% glucose, 10% maltose, 10% PVP binary aqueous solutions, the microcollapse temperature (Tmc) and the collapse temperature (Tc) differed by less than 2°C, and Tmc was 1~3°C above T'g.
Number of references: 14
Main heading: Glass transition
Controlled terms: Calorimeters - Curing - Differential scanning calorimetry - Eutectics - Freezing - Glass - Glucose - Low temperature drying - Melting point - Metal melting - Scanning - Solutions - Sublimation - Sugar (sucrose)
Uncontrolled terms: Amorphous phase - Binary aqueous solutions - Collapse temperature - Concentrated solution - Critical temperatures - Eutectic melting temperatures - Freeze-drying - Freeze-drying microscopy - Freezing process - Glass transition temperature - Melt-back
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 822.3 Food Products - 812.3 Glass - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.3 Chemical Operations - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 801 Chemistry - 741.3 Optical Devices and Systems - 531.1 Metallurgy
DOI: 10.3969/j.issn.1000-1298.2010.10.026
Database: Compendex 40. Accession number: 20104813430855
Title: Variable structure synchronization control for the single-mass nonlinear sharp resonance vibration machine
Authors: Li, Xiaohao1 ; Liu, Jie1 ; Liu, Jingtao1
Author affiliation: 1 School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China
Corresponding author: Li, X. (xhli@me.neu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 204-208
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 dynamic model of single-mass nonlinear vibration machine which driven by dual motors, the phase-difference state space equations of dual exciting motors were deduced. Under systemic sharp resonance conditions (frequency ratio was 0.95-1.05), the nonlinear variable structure synchronization controller was designed, and the parameters of the synchronization controller were deduced by theoretical method. The results of numerical simulation showed that, using the variable structure synchronization control strategy to make the dual exciting motors realized the control synchronization motion have more dominance than the traditional PID synchronization control strategy which widely used in industry control field. The variable structure control synchronization strategy could effectively improve the performance of synchronization for dual exciting motors by reduce the synchronization error which caused by the performance difference of motors, exterior disturbance and so on. It could also improve the vibrating characteristics of nonlinear system.
Number of references: 9
Main heading: Synchronization
Controlled terms: Controllers - Equations of state - Nonlinear equations - Resonance - Variable structure control
Uncontrolled terms: Control fields - Dual-motors - Frequency ratios - Non-linear vibrations - Nonlinear - Nonlinear variable structure - Numerical simulation - Phase difference - Resonance condition - Resonance vibrations - Sharp resonance - State space equation - Synchronization control - Synchronization controllers - Synchronization error - Synchronization motion - Synchronization strategies - Variable structures
Classification code: 701 Electricity and Magnetism - 731.3 Specific Variables Control - 732.1 Control Equipment - 921 Mathematics - 921.1 Algebra - 961 Systems Science
DOI: 10.3969/j.issn.1000-1298.2010.10.042
Database: Compendex 41. Accession number: 20104813430825
Title: Optimization of light-small movable unit sprinkler system using genetic algorithms based on energy consumption indicators
Authors: Wang, Xinkun1 ; Yuan, Shouqi1 ; Zhu, Xingye1 ; Tu, Qin1
Author affiliation: 1 Research Center of Fluid Machinery Engineering and Technology, 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: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 58-62
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: Reasonable configuration and optimization design of unit sprinkler system could take the advantages as maximizing efficiency of the unit and reducing the energy consumption. An optimization model was established and genetic algorithm was used to optimize light-small movable unit sprinkler system. The objective function was minimal energy consumption, the constraint conditions were pump and pipeline operating conditions, minimum working pressure of sprinkler, percentage of sprinkler working pressure range; and the decision variables were number of sprinkler, pipe diameter, sprinkler pressure in the pipeline end, respectively. The model and algorithms could optimize the number of sprinklers, pipe diameter and calculate out the flow rate, pressure, efficiency and per energy consumption of the unit. As well as the pump and pipeline could be ensured to operate in the optimized condition and the design parameters were met. An example showed that the energy consumption was reduced by 14.2% after optimum design. The algorithms can get the optimum results automatically when known conditions were input, having the advantages of excellent efficiency, accuracy, reliability, versatility and practicability.
Number of references: 11
Main heading: Energy efficiency
Controlled terms: Design - Energy utilization - Genetic algorithms - Optimization - Pipelines - Piping systems - Pumps - Sprinkler systems (fire fighting) - Sprinkler systems (irrigation)
Uncontrolled terms: Constraint conditions - Decision variables - Design parameters - Energy consumption - Minimal energy - Objective functions - Operating condition - Optimization design - Optimization models - Optimized conditions - Optimum designs - Pipe diameter - Sprinkler systems - Working pressures
Classification code: 921 Mathematics - 914.2 Fires and Fire Protection - 821.1 Agricultural Machinery and Equipment - 723 Computer Software, Data Handling and Applications - 921.5 Optimization Techniques - 619.1 Pipe, Piping and Pipelines - 525.3 Energy Utilization - 525.2 Energy Conservation - 408 Structural Design - 618.2 Pumps
DOI: 10.3969/j.issn.1000-1298.2010.10.012
Database: Compendex 42. Accession number: 20104813430832
Title: Evaluation method for man-machine interface of combine harvester cab
Authors: Yan, Xiaoyan1 ; Mao, Enrong1 ; Zhu, Zhongxiang1 ; Song, Zhenghe1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Song, Z. (gxy16@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 91-96
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 evaluation of man-machine interface for the cab of a combine harvester often involves some factors that are qualitative, lacks of available information and can only be assessed by human judgments, which inevitably involve various kinds of uncertainties and incompleteness. In view of this, an evaluation method combined the evidential reasoning approach with fuzzy membership degree was proposed to build the evaluation model for the man-machine interface of a combine harvester cab, which overcame the defects of handling information with uncertainty and incompleteness. Man-machine interface element can be assessed to a grade interval if it cannot be precisely assessed to only one grade. The introduction of utility function simplified the process of alternative ranking and decision. Applied example showed that this method could handle uncertain information effectively and the representation of results was much more coincident with people's habit to deal with uncertain information than other methods.
Number of references: 13
Main heading: Harvesters
Controlled terms: Uncertainty analysis
Uncontrolled terms: Cab - Combine harvester - Evidential reasoning - Fuzzy membership - Man-machine interface
Classification code: 821.1 Agricultural Machinery and Equipment - 922.1 Probability Theory
DOI: 10.3969/j.issn.1000-1298.2010.10.019
Database: Compendex 43. Accession number: 20104813430857
Title: Effect of working oil temperature rise on hydro-viscous drive speed regulating start
Authors: Meng, Qingrui1 ; Hou, Youfu1
Author affiliation: 1 School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
Corresponding author: Meng, Q. (bigblenny2000@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 214-218 213
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: To reveal the effect of working oil temperature rise on hydro-viscous drive speed regulating start, by using finite element method, the modified transient Reynolds equation, energy equation and temperature-viscosity equation were solved simultaneously to simulate the startup process. The results showed that the oil film temperature rise caused by the friction pair approximately was 20°C when inlet temperature of the working oil was 30°C, the decrease of oil film load capacity was about 9%. If inlet temperature of the working oil rised from 30°C to 50°C, the oil film load capacity decreased by 32% even if the temperature rise caused by the friction pair was neglected. It could make oil film load capacity lower than the dead zone pressure of the proportional pressure valve used in the control system, thus the friction discs were engaged directly and could not get a perfect speed regulating start. The results were verified by experiments.
Number of references: 12
Main heading: Finite element method
Controlled terms: Friction - Lubricating oils - Reynolds equation - Speed - Tribology
Uncontrolled terms: Dead zones - Energy equation - Friction disc - Friction pair - Hydro-viscous drives - Inlet temperature - Load capacity - Modified transient Reynolds equation - Oil film temperature - Oil films - Oil temperature - Proportional pressure valve - Speed regulating start - Speed-regulating - Start-up process - Temperature rise - Viscosity equation
Classification code: 607.1 Lubricants - 921.2 Calculus - 921.6 Numerical Methods - 931 Classical Physics; Quantum Theory; Relativity - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.10.044
Database: Compendex 44. Accession number: 20104813430834
Title: Study on biodiesel prepared from xanthoceras sorblfolia bunge seed oil and cottonseed oil
Authors: Wang, Lu1, 2 ; Tao, Ling1 ; Zhao, Fusheng3 ; Wu, Yulong1 ; Li, Chun4 ; Chen, Zeng1, 5
Author affiliation: 1 Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
2 Agriculture Technology and Population Center, Nongyishi, Akesu 843000, China
3 Xinjiang Oil Field, CNPC, Karamai 834000, China
4 School of Life Science and Technology, Beijing Institute of Technology, Beijing 100081, China
5 Food College, Shihezi University, Shihezi 832003, China
Corresponding author: Wu, Y. (wylong@souhu.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 103-106
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 biodiesel was synthesized via transesterification from xanthoceras sorblfolia bunge seed oil and cottonseed oil produced in Xinjiang. Fatty acid methyl ester from biodiesel was analyzed by GC/MS technique. Their fuel properties were also tested and compared with the standards of diesel fuel and biodiesel produced in Europe and America. The influence of the structure and content of esters on fuel properties were analyzed. The results showed that xanthoceras sorblfolia bunge seed oil was better than cottonseed oil as resources.
Number of references: 12
Main heading: Synthetic fuels
Controlled terms: Biodiesel - Chromatographic analysis - Cottonseed oil - Diesel fuels - Esterification - Esters - Fatty acids - Oils and fats - Seed - Transesterification
Uncontrolled terms: Fatty acid methyl ester - Fuel properties - Seed oil - Xanthoceras sorblfolia bunge seed oil - Xinjiang
Classification code: 523 Liquid Fuels - 801 Chemistry - 802.2 Chemical Reactions - 804.1 Organic Compounds - 821.4 Agricultural Products - 822.3 Food Products
DOI: 10.3969/j.issn.1000-1298.2010.10.021
Database: Compendex 45. Accession number: 20104813430842
Title: Optimization of electronic tongue sensors array in identifying the brands of pure milk
Authors: Wu, Congyuan1 ; Wang, Jun1 ; Xiao, Hong1, 2 ; Wei, Zhenbo1 ; Yu, Yong1
Author affiliation: 1 College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
2 Henry FOK Bioengineering College, Shaoguan University, Shaoguan 512005, China
Corresponding author: Wang, J. (jwang@zju.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 138-142 158
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: Pure milks, such as Yili, Xinxiwang, Meilijian, Mengniu and Guangming, were selected and detected by an electronic tongue. The results of one-way analysis of variance showed that brands had a very obvious effect on sensors signals of pure milks. Sensors array was optimized by removing sensors variable of small F and R2. Principal component analysis(PCA) was applied to original data and optimized data(without BA sensor; without BA, BB sensors; without BA, BB, HA sensors; without BA, BB, HA, GA sensors). Results indicated that the optimized data without BA, BB, HA, GA sensors was more effective than the other data in distinguishing the brands of pure milks. Stepwise discriminant analysis was used to recognize, the identification rates of all data in the calibration sets were 100%. In the prediction sets, the identification rates of optimized data without BA, BB, HA, GA sensors and without BA sensor were both 90%, but the optimized data without BA, BB, HA, GA sensors only included three sensors variables and showed the best identification effects on the brands of pure milks. One-way analysis of variance could optimize the sensors array of electronic tongue by removing unremarkable sensor signals and improve the recognition performance of electronic tongue.
Number of references: 8
Main heading: Principal component analysis
Controlled terms: Discriminant analysis - Electronic tongues - Optimization - Regression analysis - Sensor arrays
Uncontrolled terms: Electronic tongue - One-way analysis of variance - Principal Components - Pure milk - Stepwise discriminant analysis
Classification code: 716 Telecommunication; Radar, Radio and Television - 732 Control Devices - 801 Chemistry - 921.5 Optimization Techniques - 922 Statistical Methods - 922.2 Mathematical Statistics
DOI: 10.3969/j.issn.1000-1298.2010.10.029
Database: Compendex 46. Accession number: 20104813430840
Title: Measurement of soluble solids content in pear by FTNIR spectroscopy and variable selection
Authors: Zhu, Weixing1 ; Jiang, Hui1 ; Chen, Quansheng2 ; Guo, Jianguang1
Author affiliation: 1 College of Electronic and Information Engineering, Jiangsu University, Zhenjiang 212013, China
2 School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Zhu, W. (wxzhu@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 10
Issue date: October 2010
Publication year: 2010
Pages: 129-133
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 determination of soluble solids content (SSC) in pear by FT-NIR spectroscopy technique, in order to improve precision and robustness, interval partial least square coupled with genetic algorithm (iPLS-GA) was used to select the efficient spectral regions and variables in calibrating model. Selections of spectral regions and variables were implemented by the cross-validation. The performance of the final model was evaluated according to the root mean square error of prediction (RMSEP) and correlation coefficient (Rp) in prediction sets. The results of final model were achieved as follow: the optimal iPLS-GA model was obtained with 10 PLS factors, when 5 spectral regions and 50 variables were selected, respectively. Rp and RMSEP of optimal model was 0.9398 and 0.3250 respectively by a prediction set. This work demonstrated that NIR spectroscopy with iPLS-GA could be applied successfully to determine the SSC in pear as a precise and nondestructive method.
Number of references: 11
Main heading: Genetic algorithms
Controlled terms: Forecasting - Fruits - Infrared devices - Near infrared spectroscopy - Optimization - Principal component analysis
Uncontrolled terms: Correlation coefficient - Cross validation - FT-NIR spectroscopy - Interval partial least squares - Near Infrared - NIR spectroscopy - Nondestructive methods - Optimal model - Pear - Root-mean-square error of predictions - Soluble solids content - Spectral region - Variable selection
Classification code: 723 Computer Software, Data Handling and Applications - 741.3 Optical Devices and Systems - 821.4 Agricultural Products - 921 Mathematics - 921.5 Optimization Techniques - 922.2 Mathematical Statistics
DOI: 10.3969/j.issn.1000-1298.2010.10.027
Database: Compendex
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