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2009年第40卷第9期共收录45篇

1. Accession number:20094512432519
  Title:Experiment of the flow field at the outlet of impeller of axial-flow pump
  Authors:Li, Zhong1 ; Yang, Minguan1 ; Wang, Chunlin1
 Author affiliation:1 School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Li, Z. (lizhong1250@ujs.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:94-97
 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 flow field at the outlet of impeller in the designed axial-flow pump was measured by using the five-hole probe. Three velocity components and circulation curves were obtained. The measured results show that the flow field at the outlet of impeller is a spiral movement. Under the optimum condition, the rotary kinetic energy occupies 34% of the total outlet kinetic energy and decreases with the increase of the flux. Accompanied by the small radial velocity, the axial velocity increases with the flow intensifying. The velocity circulation decrease from the hub to the flange, wherefore the more circular velocity at the flange and the less at the hub are needed. The 3-D velocity distribution of flow field can be measured accurately by the probe. This method has the merits of simple operation and well applicability.
   Number of references:8
 Main heading:Velocity distribution
Controlled terms: Electron energy loss spectroscopy - Flanges - Flow fields - Kinetic energy - Probes - Pumps - Velocity
  Uncontrolled terms: Axial velocity - Axial-flow pump - Five-hole probe - Measured results - Optimum conditions -  Radial velocity - Simple operation - Velocity components
  Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943.2 Mechanical Variables Measurements  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  - 941 Acoustical and Optical Measuring Instruments  -  932.2 Nuclear Physics  -  931.3 Atomic and Molecular Physics  -  931.1 Mechanics   -  922.2 Mathematical Statistics  -  801 Chemistry  -  631.1 Fluid Flow, General  -  619.1.1 Pipe Accessories  -  618.2 Pumps
  Database:Compendex
 Compilation and indexing terms, ? 2009 Elsevier Inc.
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2. Accession number:20094512432544
 Title:Dynamic analysis of the machine drive screw
 Authors:Zhang, Huiduan1 ; Tan, Qingchang1 ; Li, Qinghua2
Author affiliation:1 College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China  2 College of Machinery Engineering, Changchun University, Changchun 130025, China
 Corresponding author:Zhang, H. (zhr@jlu.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:220-226
 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:The drive screw was simplified as a rotating Timoshenko beam bearing the pre-tension force and moving forces, and the frequency equation of the screw with the elastic end supports was derived under considering the effect of gyroscope, the pre-tension force, the moving forces on the screw vibration, and the bearing stiffness. The dynamic model of the drive screw was established using Lagrange equation, and was analyzed adopting the mode superposition and Runge-Kutta method to calculate the transient response. Eventually, the effect of the system parameters on the whirl speed and lateral vibration was studied to supply a base for designing the drive system.
  Number of references:10
 Main heading:Dynamic response
Controlled terms: Bearings (structural)  -  Dynamic analysis  - Equations of motion  -  Rotation  -  Runge Kutta methods
  Uncontrolled terms: Bearing stiffness  -  Drive systems  -  Frequency equation  -  Lagrange equation  -  Lateral vibration  -  Lateral vibrations  -  Machine drives  -  Mode superposition  -  Moving forces  -  Pre-tension   -  Timoshenko beams  -  Transient response  -  Whirl speed
Classification code: 921.6 Numerical Methods  -  921.2 Calculus  -  601.1 Mechanical Devices  -  931.1 Mechanics  -  422.2 Test Methods  -  408.1 Structural Design, General  -  401.1 Bridges  -  408.2  Structural Members and Shapes
 Database:Compendex
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3. Accession number:20094512432531
 Title:Optimization on the crystallization of fructose
 Authors:Yan, Xudong1 ; Yang, Ruijin2 ; Hua, Xiao2 ; Zhang, Wenbin2
  Author affiliation:1 State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China  2 School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
 Corresponding author:Yang, R. (yrj@jiangnan.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
  Publication year:2009
 Pages:155-160
  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 improvement of the crystalline technique of fructose  was reported. The effect of sucrose ester S570 and surfactant Span 60 on crystals was studied, and the results show that the CV of crystals can be reduced by 51.5% when adding 100mg/kg Span 60. The optimal glucoamylase is utilized to hydrolyze oligosaccharides in fructose syrup, under the optimal conditions: enzymes/oligosaccharides 600mg/kg and hydrolysis time 20h, pH value 4.0, reaction temperature 55°C, fructose syrup concentration 60%. The optimized cooling-crystallization conditions are as follows, seeds amount 2%, initial supersaturation degree 1.02-1.08, cooling rate before adding ethanol 0.4°C/h, ethanol concentration 0.2, cooling rate after adding ethanol: 0.28°C/h (52-46°C), 0.55°C/h (46-43°C), 0.80°C/h (43-35°C), 0. 90°C/h (35-25°C). With the optimized parameters, the final product yield is 56.92%, and the mean size is 221.9μm.
 Number of references:14
 Main heading:Enzymatic hydrolysis
Controlled terms:Cooling  -  Crystalline materials  -  Crystallization  -  Enzymes  -  Esters  -  Ethanol  -  Fructose  -  Optimization  -  Sugar (sucrose)  -  Surface active agents
Uncontrolled terms:Cooling rates  -  Crystalline fructose  -  Crystallization conditions  -  Ethanol concentrations  -  Glucoamylase  -  Mean size  -  Optimal conditions  -  Optimized parameter  -  pH value  -  Product yields   -  Reaction temperature  -  Sucrose esters  -  Supersaturation degree  -  Surfactant
Classification code:933.1 Crystalline Solids  -  802.3 Chemical Operations  -  803 Chemical Agents and Basic Industrial Chemicals  - 804.1 Organic Compounds  -  804.2 Inorganic Compounds  -  822.3 Food Products  -  921.5 Optimization Techniques  -  802.2 Chemical Reactions  -  641.2 Heat Transfer  -  531.2 Metallography  -  523 Liquid Fuels  -  482.2 Minerals  -  461.2 Biological Materials and Tissue Engineering  -  801.2 Biochemistry
 Database:Compendex
 Compilation and indexing terms, ? 2009 Elsevier Inc.
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4. Accession number:20094512432534
 Title:Double three-point fix and objective diagram fitting controlling of farming robot
 Authors:Yan, Qinlao1 ; Gao, Chi2 ; Zha, Guangxing1 ; Cheng, Zhengwei1 ; Xue, Shaoping1
 Author affiliation:1 College of Mechanical and Electronic Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China  2 Mechanical and Electronic Department, Laiwu Vocational and Technical College, Laiwu 271100, China
 Corresponding author:Xue, S. (shaoping@nwsuaf.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:171-174
 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 raise position and posture precision of farming robot, double three-point fix disposition principle and method of farming autonomous mobile robot were proposed which were used to implement position and posture precision of the robot when it was moving independently, and the laser survey sensor and ultra audible sound receiving sensor were employed to build up the measure and test system and realized examination. The experiments show that operation speed and controlling precision are increased by using the methods, its absolute error is aggrandized, whereas its relativeerror is reduced obviously, and it is sensitive for barrier on the ground, and its stability can enhance by raising its weight.
 Number of references:6
 Main heading:Robots
 Controlled terms:Sensors
Uncontrolled terms: Absolute error  -  Audible sound  -  Autonomous Mobile Robot  -  Double three-point  -  Farming robot  -  Fitting  - Operation speed  -  Position and posture  -  Relative errors  -  Test systems
Classification code:731.5 Robotics  -  731.6 Robot Applications  - 732.2 Control Instrumentation  -  801 Chemistry
 Database:Compendex
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5.Accession number:20094512432539
 Title:Design of force balance for 2-DOF nanopositioning magnetic levitation stage
 Authors:Cheng, Lingli1 ; Yu, Xiaofen1
 Author affiliation:1 School of Instrument Science and Optoelectronic Engineering, Hefei University of Technology, Hefei 230009, China
 Corresponding author:Yu, X. (yuxiaofen99@126.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:197-200
 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 eliminate the additional moments of force, the magnetic force, gravity force and friction force were studied in a novel two-degree-of-freedom (2-DOF) nanopositioning magnetic levitation stage. The structure of the nanopositioning stage was designed in terms of the theory of force balance, then, the direction and coordinate point of the drive force of the nanomotor were gained. The experiment of linearity and repeatability of the stage were carried out, and the experiments results indicated that the yaw error was less than 5 arcsec, the pitch error was less than 15 arcsec and the repeatability of these two errors were nearly 1 arcsec per one millimeter. The stage movement was stable.
 Number of references:6
 Main heading:Suspensions (components)
 Controlled terms: Magnetic levitation  -  Magnetic levitation vehicles  -  Magnetism
Uncontrolled terms: Additional moment  -  Drive force  -  Force balances  -  Friction force  -  Gravity forces  -  Magnetic force  - Magnetic suspension forces  -  Nano-positioning  -  Nanomotors  -  Nanopositioning stage   -  Pitch errors  -  Two-degree-of-freedom
Classification code: 601.2 Machine Components  -  682 Railroad Rolling Stock  -  701.2 Magnetism: Basic Concepts and Phenomena  -  708.4 Magnetic Materials
 Database:Compendex
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6.Accession number:20094512432508
 Title: Dynamic substructure tire model based on modified craig-bampton method
 Authors: Zhang, Xiaoyang1 ; Sun, Beibei1 ; Chen, Nan1 ; Sun, Qinghong1
 Author affiliation:1 School of Mechanical Engineering, Southeast University, Nanjing 211189, China
 Corresponding author:Zhang, X. (zxy513@sohu.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
  Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:41-45
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: An approach to modeling parameterized FEM tire based on experimental modal parameters was proposed. Natural frequencies, mode shapes and damping ratios of FEM tire model with the optimal parameters had good agreement with modes acquired by the experiment. With Craig-Bampton method and tire-ground contact characteristic obtained from tire static radial compression experiment, normal and constraint modes of FEM tire model were extracted for building dynamic substructure model of tire. The coupling of tire substructure model and vehicle multi-body model was realized through modal synthesis, which can contribute to vehicle dynamic simulation and optimization design.
 Number of references:11
 Main heading:Finite element method
Controlled terms: Computer simulation  -  Dynamic models  -  Modal analysis  -  Tires  -  Vehicles
Uncontrolled terms: Building dynamics  -  Constraint modes  - Damping ratio  -  Dynamic substructure  -  Ground contacts  -  Modal parameters  -  Modal synthesis  -  Mode shapes  -  Multi-body models  -  Optimal parameter   -  Parameterized  -  Radial compression  -  Test modal method  -  Tire models  -  Vehicle dynamic model  -  Vehicle dynamic simulation
Classification code:432 Highway Transportation  -  723.5 Computer Applications  -  818.5 Rubber Products  -  921 Mathematics  -  921.6 Numerical Methods
 Database:Compendex
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7. Accession number:20094512432503
 Title:Rapid control prototyping experiment of automated clutch based on dSPACE
 Authors:Zhao, Yongsheng1 ; Liu, Zhifeng1 ; Yang, Wentong1 ; Cai, Ligang1
 Author affiliation:1 School of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
 Corresponding author:Zhao, Y. (yszhao@bjut.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:12-15
 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: Due to the characteristic of non-linear dynamic, time-delays, external disturbance and parameter uncertainty, the automated clutch is difficult to be controlled precisely. A sliding mode controller was introduced to control the automated clutch effectively. The sliding and global stability conditions were formulated and analyzed in terms of Lyapunov full quadratic form. The rapid control prototyping of automated clutch was built based on dSPACE. The experiment results show the controller is effective and robust to the parametric variation and external disturbance.
 Number of references:8
 Main heading:Controllers
Controlled terms:Automation  -  Clutches  -  Concurrent engineering  -  Job analysis  -  Number theory  -  Rapid prototyping  -  Sliding mode control
Uncontrolled terms:Automated clutch  -  DSPACE  -  External disturbances  -  Global stability conditions  -  Lyapunov full quadratic form  -  Non-linear dynamics  -  Parameter uncertainty  -  Parametric variation  -  Rapid control prototyping  -  Sliding mode controller
Classification code:913.6 Product Development; Concurrent Engineering  -  913.1 Production Engineering  -  912 Industrial Engineering and Management  -  732.1 Control Equipment  -  921 Mathematics  -  732 Control Devices  -  731 Automatic Control Principles and Applications  -  723.5 Computer Applications  -  602.2 Mechanical Transmissions  -  731.1 Control Systems
 Database:Compendex
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8. Accession number:20094512432535
 Title:Design and experiment of vegetable grafting machine with double manipulators
 Authors:Yang, Li1 ; Liu, Changqing2 ; Zhang, Tiezhong1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China 2 College of Mechanical and Electronical Engineering, Beijing Union University, Beijing 100021, China
 Corresponding author:Yang, L.
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:175-181
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:To improve the grafting rate of 2JSZ600 vegetable grafting machine and the survival ratio of vegetable seedling grafted, a high-speed vegetable grafting machine with double manipulators was developed based on the essential structure of the old machine with a set of manipulators for transporting stock and scion added and the geometrical parameter of cutting mechanism optimized. The key structural parameters were determined by mechanism analysis and experiment. The cutting effects of stock and scion were best when angular velocity of cutter was 210 r/min. The experimental results indicate that the average grafting rate of the machine is 854 seedlings per hour and the survival ratio is 93.3%, compared with the old machine, under the condition of the same grafting success rate and adaptability to seedlings. The grafting rate and the survival ratio are increased respectively 42.3% and 3.3%.
 Number of references:15
 Main heading:Machine design
 Controlled terms:Cutting  -  Experiments  -  Grafting (chemical)  -  Manipulators
Uncontrolled terms:Cutting effect  -  Cutting mechanisms  -  Double manipulators  -  Geometrical parameters  -  Grafting rate  -  High-rate  -  High-speed  -  Mechanism analysis  -  Structural parameter  -  Survival ratio   -  Vegetable grafting machine  -  Vegetable seedlings
Classification code:815.1 Polymeric Materials  -  802.2 Chemical Reactions  -  731.5 Robotics  -  901.3 Engineering Research  -  691.1 Materials Handling Equipment  -  604.1 Metal Cutting  -  601 Mechanical Design  -  606.2 Abrasive Devices and Processes
 Database:Compendex
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9. Accession number:20094512432516
 Title:Inverse design method of centrifugal pump blade based on PDE method
 Authors:Zhang, Renhui1 ; Yang, Junhu1 ; Li, Rennian1 
Author affiliation:1 College of Fluid Power and Control, Lanzhou University of Technology, Lanzhou 730050, China
 Corresponding author:Zhang, R. (zhangrh@lut.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:81-84
 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 implement the parametric optimization design of centrifugal pump blade, the partial differential equation was used to design the impeller meridian plane and the 3-D blade surface. Firstly, quartic Bezier curve was employed to design the meridian plane, and then the partial differential equation was introduced to produce the original streamline and meridian quasi-orthogonal lines. Secondly, the partial differential equation was used to generate the centrifugal pump blade surface. According to the blade streamline equation, the angular coordinates of dispersed points on pump blade boundary was calculated from the distributions of blade angle on boundary. Consequently the boundary-value of the partial differential equation was determined. The blades geometries was controlled by adjust the distribution of the blade angle along hub and shroud. The relation between the 3-D model of pump blade and the pump design parameters was built, to achieve the parametric design of pump blade. The gradient optimizing method was introduced to realize the optimization of pump blade. The calculation result of the flow field was used to renew the shape of pump blade. The calculation case shows that the presented inverse method of centrifugal pump blade is rational.
 Number of references:10
 Main heading:Pumps
Controlled terms: Centrifugal pumps  -  Computational fluid dynamics  -  Design  -  Electric network parameters  -  Hydraulic machinery  - Image segmentation  -  Inverse problems  -  Optimization  -  Partial differential equations  -  Pumping plants   -  Three dimensional  -  Turbomachine blades
Uncontrolled terms: 3D models  -  Angular coordinates  -  Bezier curve  -  Blade angle  -  Blade Surface  -  Impeller meridian  -  Inverse design methods  -  Inverse methods  -  Optimization design  -  Parametric design   -  Parametric optimization  -  PDE method  -  Pump design
Classification code: 931.1 Mechanics  -  632.2 Hydraulic Equipment and Machinery  -  703.1 Electric Networks  -  723.2 Data Processing and Image Processing  -  723.5 Computer Applications  -  741.1 Light/Optics  -  902.1 Engineering Graphics  -  921 Mathematics  -  921.2 Calculus  -  921.5 Optimization Techniques  -  921.6 Numerical Methods  -  631.1.2 Gas Dynamics  -  402.1 Industrial and Agricultural Buildings  -  408 Structural Design  -  446 Waterworks -  612.3 Gas Turbines and Engines  -  631.1.1 Liquid Dynamics  -  617.1 Hydraulic Turbines  -  618 Compressors and Pumps  -  618.2 Pumps  -  631.1 Fluid Flow, General  -  617.2 Steam Turbines
 Database:Compendex
 Compilation and indexing terms, ? 2009 Elsevier Inc.
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10. Accession number:20094512432504
 Title:AMT shift control strategy based on the fleetness changing of the gas pedal aperture
 Authors:Liu, Wenguang1 ; He, Ren1
 Author affiliation:1 School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:He, R. (heren@ujs.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:16-19
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Using three parameters (the change of accelerator aperture, the vehicle speed, the accelerator) shift control in AMT vehicle, the vehicle speed response lagged to the change of accelerator aperture for the large inertia of the automobile, and the phenomenon of shifting frequently occurred when accelerator aperture varied extensively. The fuzzy control method was proposed on the base of three parameters into which the change of accelerator aperture was added. Meanwhile, aimed at the problem of excessive input parameter and rule, the method of double fuzzy rule was proposed which reduced the amount of rule, improved the processor operation ability. The simulation results verify the validity of control strategy.
 Number of references:10
 Main heading:Fuzzy control
 Controlled terms:Acceleration  -  Blood vessel prostheses
Uncontrolled terms:AMT  -  Control strategies  -  Control strategy  -  Gas pedals  -  Input parameter  -  Rate of gas pedal aperture change  -  Shift  -  Simulation result  -  Three parameters  -  Vehicle speed
Classification code:462.4 Prosthetics  -  723.4 Artificial Intelligence  -  731 Automatic Control Principles and Applications  -  921 Mathematics  -  931.1 Mechanics
 Database:Compendex
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11.Accession number:20094512432506
 Title:Application of brake decay power in calibration of ABS
 Authors:Kong, Lei1 ; Song, Jian1
 Author affiliation:1 State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
 Corresponding author:Kong, L. (leikong@tsinghua.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:32-36
 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 the high cost and long period of ABS calibration and matching using threshold control method, the theory of brake decay power was applied to ABS calibration. The shortages of conventional method of matching ABS were analyzed. Utilizing the advantages of threshold method and brake decay power theory, the ABS calibration and matching method for vehicle based on brake decay power theory was put forward. According to theory that the slip rate by max of brake decay power approaches slip rate by peak of adhesion coefficient very well, the slip rate by max of brake decay power can be used for ABS control. The curve of relations between slip rate and brake decay power can be obtained simply relatively, so the period of ABS calibration can be shortened. Vehicle test proves that it can enhance matching efficiency observably and economize calibration cost largely.
 Number of references:6
 Main heading:Brakes
 Controlled terms:Calibration  -  Decay (organic)
Uncontrolled terms:ABS  -  Adhesion coefficient  -  Conventional methods  -  High costs  -  Matching methods  -  Power theory  -  Slip rates  -  Threshold control  -  Threshold methods  -  Vehicle tests
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  902.2 Codes and Standards  -  811.2 Wood and Wood Products  -  802.2 Chemical Reactions  -  801.2 Biochemistry  -  602 Mechanical Drives and Transmissions
 Database:Compendex
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12. Accession number:20094512432543
 Title:Dynamic model of trapped oil and effect of related variables on trapped oil pressure in external spur-gear pump
 Authors:Li, Yulong1, 2 ; Liu, Kun1
 Author affiliation:1 College of Automobile and Mechanical Engineering, Hefei University of Technology, Hefei 230009, China  2 Department of Mechanical Engineering, Hefei University, Hefei 230022, China
 Corresponding author:Liu, K. (liukun@mail.hf.ah.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:214-219
 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 understand the effect of condition and design parameters on trapped oil pressure in external spur-gear pump, based on the geometrical relationship of gear transmission of external spur-gear pump and relative position with relief groove, a new dynamic trapped oil model including equation of trapped oil pressure and dynamic coupled equation of gear pair was derived from the calculations of trapped volume and it's first derivative and exchange flux from inside to outside of trapped volume and dynamic backlash value. Thereby simulation results of trapped oil pressure were produced and compared with tested results published in a literature. All results indicated the simulation results from dynamic trapped-oil model were greater in value than static trapped-oil model with trapped-oil pressure p2 exceeding p1, besides, all involved parameters discrepantly influenced trapped-oil pressure, accordingly optimization of operate parameter was necessitated. Finally, the validated trapped-oil model was thought to be right and reliable for forecast on trapped-oil pressure as well as vibration analysis along with vibration evaluation and optimization of entire design of gear pump.
 Number of references:12
 Main heading:Dynamic models
 Controlled terms:Gear pumps  -  Pressure effects  -  Pumps  -  Simulators  -  Vibration analysis
Uncontrolled terms:Coupled equation  -  Design parameters  - Exchange fluxes  -  External gear pump  -  First derivative  -  Gear transmissions  -  Geometrical relationship  -  Influencing factors   -  Oil pressures  -  Related variables   -  Relative positions  -  Relief groove  -  Simulation result  -  Trapped oil model
Classification code:943.2 Mechanical Variables Measurements  - 931.1 Mechanics  -  921 Mathematics  -  751.2 Acoustic Properties of Materials  -  671 Naval Architecture  -  662.1 Automobiles  -  657.1 Solar Energy and Phenomena  -  655.2 Satellites  -  654.1 Rockets and Missiles  -  621 Nuclear Reactors  -  618.2 Pumps
 Database:Compendex
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13. Accession number:20094512432529
 Title:Ultrasonic modification of alcohol leached rapeseed protein concentrate
 Authors:Pan, Mu1, 2 ; Jiang, Shaotong2 ; Sun, Hanju2 ; Pan, Lijun2 ; Zheng, Zhi2 ; Luo, Shuizhong2
 Author affiliation:1 Biological Technology Institute of Guizhou Province, Guiyang 550006, China 2 School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China
 Corresponding author:Jiang, S. (jiangshaotong@yahoo.com.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 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:A method of utilizing ultrasonic to modify alcohol leached rapeseed protein concentrate was studied. Then the functionalities and physico-chemical properties of the modified products were compared. The influence factors on the NSI were analyzed, such as pH value, modification time, ultrasonic power and RPC concentration. The orthogonal test results showed that the optimum modification parameters were as follows: RPC concentration 3%, modification time 5 min, ultrasonic power 300W and pH value 11. Under the above-mentioned modification parameters, the modified alcohol leached rapeseed protein concentrate with NSI 86. 94% and foaming stability 80% can be obtained.
 Number of references:13
 Main heading:Ultrasonics
 Controlled terms:Chemical properties  -  Leaching  -  Particle spectrometers  -  pH effects
Uncontrolled terms:Influence factors  -  Modification  -  Modified products  -  NSI  -  Orthogonal test  -  pH value  -  Physicochemical property  -  Protein concentrates  -  Ultrasonic power
Classification code:932.1 High Energy Physics  -  802.3 Chemical Operations  -  801.1 Chemistry, General  -  801 Chemistry  -  753.1 Ultrasonic Waves  -  533.1 Ore Treatment  -  423 Non Mechanical Properties and Tests of Building Materials
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14. Accession number:20094512432520
 Title:Cavitation simulation of francis turbine runner for hydraulic optimization design
 Authors:Wang, Lei1 ; Chang, Jinshi1
 Author affiliation:1 College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
 Corresponding author:Wang, L. (cauwanglei@126.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:98-102
 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:The simulation of cavitating flows in hydraulic runner for the hydraulic optimal design was presented by using the two-phase flow method through the solution of the time-average Navier-Stokes equations based on the mass transport equation. The results show that the efficiency apparently increases from 93.4% to 94.7% when the wrap angle of the blade enlarges and the trailing edges of the blade extend. The pressure on the blades is well distributed and the critical cavitation coefficient at optimum operating condition is lower than unmodified, 0.03, and the cavity domain are also decreased. Finally, the cavitation performance of runner is improved. The computational results, which agree with experimental data, provide a correct direction for further optimal design for the runner.
 Number of references:9
 Main heading:Cavitation
Controlled terms:Design  -  Engines  -  Flow simulation  -  Fluid dynamics  -  Hydraulic machinery  -  Hydraulic motors  -  Hydraulic turbines  -  Multiphase flow  -  Navier Stokes equations  -  Optimal systems   -  Optimization
Uncontrolled terms:Cavitating flow  -  Cavitation performance  -  Computational results  -  Experimental data  -  Francis turbine runner  -  Mass transport equation  -  Optimal design  -  Optimization design  -  Optimum operating conditions  -  Trailing edges
Classification code:723.5 Computer Applications  -  731.1 Control Systems  -  902.1 Engineering Graphics  -  921.2 Calculus  -  921.5 Optimization Techniques  -  931.1 Mechanics  -  961 Systems Science  -  654.2 Rocket Engines  -  408 Structural Design  -  612 Engines  - 617.1 Hydraulic Turbines  -  617.3 Steam Engines  -  631.1 Fluid Flow, General  -  631.1.1 Liquid Dynamics  -  632.2 Hydraulic Equipment and Machinery
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15. Accession number:20094512432533
 Title:Intelligent detection system of multi-sensor information for growing crops
 Authors:Zhang, Xiaodong1 ; Mao, Hanping1 ; Ni, Jun1 ; Zhang, Yuan1 ; Cheng, Xiuhua1
 Author affiliation:1 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Zhang, X. (zxd700227@126.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:164-170
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The hardware system of an intelligent detection for growing crop was developed based on multi-sensor information. The stable light source was obtained from the detection chamber, and the temperature, humidity and lighting levels could be set in the system that could be used to simulate some growing environment of crops. The information including the spectrum information, multi-spectral image, canopy temperature and canopy lighting level for crops and ambient temperature, humidity information was collected by multi-sensor information acquisition system by which the crop growth information could be monitored effectively. Then, the system was used to detect the spectral and the multi-spectral image characters for the rape nitrogen level and the water content. Meanwhile, the influence of the light intensity was investigated for the detection system. The results showed that the influence of the environment factor on the results can be eliminated. The exact and quantitative analysis about the rape nitrogen content and the water content can be carried out by means of the multi-sensor information technology. The linear relationships between nitrogen content and spectral reflectance value is 0.92, with the RMSE of 0.53.
 Number of references:16
 Main heading:Humidity control
Controlled terms:Crops  -  Interferometry  -  Light  -  Light sources  -  Mergers and acquisitions  -  Nitrogen  -  Reflection  -  Sensors  -  Spectrum analysis  -  Spectrum analyzers   -  Water analysis  -  Water content
Uncontrolled terms:Ambient temperatures  -  Canopy lighting  -  Canopy temperature  -  Crop growth  -  Detection chambers  -  Detection system  -  Growing crops  -  Hardware system  -  Information acquisition  -  Intelligent detection   -  Light intensity  -  Lighting level  -  Linear relationships  -  Multi-sensor information  -  Multi-spectrum  -  Multispectral images -  Nitrogen content  -  Nitrogen levels  -  Quantitative analysis  -  Spectral reflectance value   -  Spectrum information
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  801 Chemistry  -  804 Chemical Products Generally  -  821.4 Agricultural Products  -  912 Industrial Engineering and Management  -  921 Mathematics  -  922.2 Mathematical Statistics  -  941 Acoustical and Optical Measuring Instruments  -  941.4 Optical Variables Measurements  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  744 Lasers  -  402 Buildings and Towers  -  444 Water Resources  -  445.2 Water Analysis  -  643.3 Air Conditioning  - 707.2 Electric Lamps  -  714.2 Semiconductor Devices and Integrated Circuits  -  732.2 Control Instrumentation  -  741.1 Light/Optics  - 711 Electromagnetic Waves
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16. Accession number:20094512432523
 Title:Preparation of emulsified fuel from biomass pyrolysis derived bio-oil and diesel and their use in engine
 Authors:Bai, Xueyuan1 ; Wu, Juan2 ; Wang, Lihong1 ; Li, Yongjun1 ; Yi, Weiming1
 Author affiliation:1 School of Light Industry and Agricultural Engineering, Shandong University of Technology, Zibo 255091, China  2 Department of Electrical and Mechanical Engineering, Industrial Vocational College of Shandong, Zibo 256414, China
 Corresponding author:Bai, X. (baixy@sdut.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:112-115 111
 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: Emulsified fuel from biomass pyrolysis derived bio-oil and diesel was prepared and fueled to a laboratory diesel engine tester. The experimental bio-oil was obtained from the pyrolysis of corn stalk powders in a fluidized bed reactor. The emulsified fuel was produced by mixing the bio-oil with commercial No. 0 diesel oil as well as surfactants using a homogenizer. The performances of bio-oil/diesel oil emulsified fuels with two different bio-oil/diesel oil ratios were tested on a ZS1110 diesel engine. Consequently, the load characteristic and exhaust emission characteristic curves of diesel engine were determined, and the specific fuel consumption and effective thermal efficiency of the engine fueled with the emulsified fuel were analyzed in comparison with that of the pure No. 0 diesel oil. The experimental results show that, when the engine is fueled with the emulsified fuel at bio-oil concentration of 15%, the specific fuel consumption is lower and the effective thermal efficiency is higher than that of the pure No. 0 diesel oil. The highest fuel saving rate reached 10%. Moreover, the NO and CO emissions are lower than that of the pure No. 0 diesel oil.
 Number of references:10
 Main heading:Leakage (fluid)
Controlled terms:Biomass  -  Carbon monoxide  -  Chemical reactors  -  Diesel engines  -  Diesel fuels  -  Emulsification  -  Engines  - Fluid catalytic cracking  -  Fluidization  -  Fluidized beds   -  Fuel consumption  -  Fuel economy  -  Pyrolysis  -  Steel metallurgy -  Surface active agents  -  Thermal effects
Uncontrolled terms:Bio-oil  -  Diesel oil  -  Emission characteristics  -  Emulsified fuel  -  Surfactant
Classification code:654.2 Rocket Engines  -  642.2 Industrial Furnaces and Components  -  641 Heat and Mass Transfer; Thermodynamics  -  619.1 Pipe, Piping and Pipelines  -  617.3 Steam Engines  -  612.2 Diesel Engines  -  951 Materials Science  -  802.1 Chemical Plants and Equipment  -  821.5 Agricultural Wastes  -  805.1.1 Biochemical Engineering  -  804.2 Inorganic Compounds  -  804.1 Organic Compounds  -  803 Chemical Agents and Basic Industrial Chemicals  -  802.3 Chemical Operations  -  802.2 Chemical Reactions -  612 Engines  -  545.3 Steel  -  521 Fuel Combustion and Flame Research  -  513.1 Petroleum Refining, General  -  483.1 Soils and Soil Mechanics  -  452.3 Industrial Wastes  -  452.1 Sewage  -  421 Strength of Building Materials; Mechanical Properties  -  521.2 Combustors  -  525.1 Energy Resources and Renewable Energy Issues  - 525.2 Energy Conservation  -  525.3 Energy Utilization  -  531 Metallurgy and Metallography  -  531.1 Metallurgy  -  523 Liquid Fuels
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17.Accession number:20094512432532
 Title:Design and experiment on oscillation heat-pipe heat exchanger of wood drying
 Authors:Chai, Benyin1 ; Li, Xuanyou2 ; Zhou, Shenjie1 ; Shi, Yongchun2 ; Liu, Dengying3 ; Shao, Min2
 Author affiliation:1 Mechanical Engineering Department, Shandong University, Ji'nan 250061, China  2 Industrial Energy Conservation Research Centre, Shandong Academy Sciences, Ji'nan 250014, China  3 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China
 Corresponding author:Chai, B. (chaiby-tl@hotmail.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:161-163 137
 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: Heat recovery system of the self-excited oscillation heat pipe heat exchanger was designed and experimented. The effects of humid gas and operating parameters on heat recovery efficiency were studied. The results show that self-excited oscillation heat pipe heat exchanger can meet heat recovery requirements for the high humid exhaust gas. Under the given operating conditions, the system's heat recovery efficiency is higher than 18%.
 Number of references:9
 Main heading:Waste heat utilization
 Controlled terms:Heat pipes  -  Recovery  -  Waste heat
Uncontrolled terms:Heat recovery  -  Heat recovery efficiency  -  Heat recovery systems  -  High humid exhaust gas  -  Humid gas  -  Operating condition  -  Operating parameters  -  Self excited oscillation  -  Self-excited oscillation heat pipe  -  Waste heat recovery   -  Wood drying
Classification code:643.1 Space Heating  -  642.1 Process Heating  - 641.2 Heat Transfer  -  622.5 Radioactive Wastes  -  619.1 Pipe, Piping and Pipelines  -  616.1 Heat Exchange Equipment and Components  -  614.1 Steam Power Plant Design and Construction  -  531 Metallurgy and Metallography  -  525.4 Energy Losses (industrial and residential)  -  525.3 Energy Utilization  -  454.2 Environmental Impact and Protection
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18. Accession number:20094512432513
 Title:Large eddy simulation on interior flow field of rotational flow self-priming pump
 Authors:Wang, Chunlin1 ; Si, Yanlei1 ; Zhao, Baitong1 ; Zhang, Hao1 ; Zheng, Haixia1
 Author affiliation:1 School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Wang, C. (wangzha@pub.zj.jsinfo.net)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:68-72 97
 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: Rotational flow self-priming pump's volute is different from conventional pump, with special flow structure. 3-D unsteady turbulent flow of rotational flow self-priming pump under design condition was simulated by using large eddy simulation method and sliding mesh technique. In the impeller and volute, pressure distribution, velocity distribution and vortex's structure and evolution characteristics of wake region and other flow message were captured. The results showed that static pressure is asymmetric in impeller. And the reason for vortex forming in separation chamber was analyzed. The gas fraction distribution shows that gas phase mainly centers on the blade suction interface zone in the impeller. Performance prediction was carried out and performance curves were gotten. The performance experiment results was conducted and compared with prediction results. Large eddy simulation was accurate in predicting performance and interior flow characteristics.
 Number of references:8
 Main heading:Flow simulation
Controlled terms:Experiments  -  Flow fields  -  Large eddy simulation  -  Phase interfaces  -  Pumps  -  Rotational flow  -  Systems engineering  -  Turbulent flow
Uncontrolled terms:Blade suction  -  Conventional pumps  -  Design condition  -  Evolution characteristics  -  Gas fraction  -  Gasphase  -  Interior flow  -  Interior flow field  -  Large Eddy simulation methods  -  Performance curve   -  Performance experiment -  Performance prediction  -  Self priming pumps  -  Sliding mesh technique  -  Static pressure  -  Wake region
Classification code:931.2 Physical Properties of Gases, Liquids and Solids  -  921 Mathematics  -  912 Industrial Engineering and Management  -  901.3 Engineering Research  -  961 Systems Science  - 801.4 Physical Chemistry  -  631.1 Fluid Flow, General  -  631 Fluid Flow  -  618.2 Pumps  -  723.5 Computer Applications
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19.Accession number:20094512432542
 Title:Real-time measurement on lubrication characteristic parameters of plane port pair in axial piston pumps
 Authors:Wang, Bin1 ; Zhou, Hua1 ; Yang, Huayong1
 Author affiliation:1 State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
 Corresponding author:Wang, B. (wb3581@163.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:209-213 170
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: To study the tribological properties of port pairs in axial piston pump, the model test system was built to measure the lubrication characteristic parameters. And the operation condition was regulated and controlled to find port pairs in good condition. Advantages of model tests for lubrication properties of port pairs were presented, and according to the theoretical lubricating model, the main tested items such as supply pressure and film height were listed. In addition, the structure and key technological problems for the dynamic test device, with the film height feedback by electrohydraulic control, were introduced. Test results of film height at several points on sealing area of plane pairs, leakage flow, and frictional torque and so on, show that supply pressure greatly affects lubricating the height and its figuration of film, and that the cylinder block surface wear mainly resulted from destruction of film.
 Number of references:11
 Main heading:Lubrication
Controlled terms:Leakage (fluid)  -  Ports and harbors  -  Reciprocating pumps  -  Testing  -  Time measurement
Uncontrolled terms:Axial piston pump  -  Cylinder block  -  Dynamic tests  -  Electro-hydraulic control  -  Frictional torque  -  Leakage flow  -  Lubrication characteristics  -  Lubrication property  -  Model tests  -  Operation conditions   -  Port pair  -  Real time measurements  -  Supply pressure  -  Surface wear  -  Test results  -  Tribological properties
Classification code:619.1 Pipe, Piping and Pipelines  -  618.2 Pumps -  607.2 Lubrication  -  483.1 Soils and Soil Mechanics  -  943.3 Special Purpose Instruments  -  452.3 Industrial Wastes  -  423.2 Test Methods  -  422.2 Test Methods  -  407.1 Maritime Structures  - 452.1 Sewage
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20.Accession number:20094512432522
 Title:Measurement of twin-fluid electrostatic spray structure by using PIV
 Authors:Wang, Junfeng1 ; Wang, Zhentao1 ; Mao, Huimin1 ; Luo, Tiqian1
 Author affiliation:1 College of Energy Resources and Power Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Wang, J. (wangjunfeng@ujs.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 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: In electrostatic charged spray, the electrostatic and polarization forces produced by high electrostatic field coupled with fluid forces act on the droplets which has a marked effect on the motion characteristics of the droplets. To analyse the charged twin-fluid spray structure, the effects of electrification on spray structure and aggrandizement of heat and mass transfer were discussed. Furthermore, PIV technology was employed to measure the gas-liquid twin-fluid electrostatic spray, and the collected flow image was send to the computer via data line by the image grabber card. The spray images data were analyzed by using Insight 3. 3 software and then flow velocity and streamlines were gained. The experiment results indicated that the twin-fluid electrostatic spray has the special spray flow structure. The distinctly different structures with main jet flow section, up convolution section, down convolution section and influence section in the spray flow field were formed. The complicated eddy current effect comes into being in the twin-fluid electrostatic spray from single convolution phenomena, which could make the droplets contact with gas medium easy, and enhance the droplets absorbency.
 Number of references:15
 Main heading:Electrostatics
Controlled terms:Convolution  -  Drop formation  -  Electric utilities  -  Fluids  -  Mass transfer
Uncontrolled terms:Data line  -  Different structure  -  Eddy-current effects  -  Electrostatic field  -  Electrostatic spray -  Fluid forces  -  Gas liquids  -  Gas medium  -  Heat and mass transfer  -  Image grabbers   -  Jet flow  -  Motion characteristics -  PIV  -  Polarization forces  -  Spray flow  -  Spray structure  -  Twin-fluid
Classification code:931.2 Physical Properties of Gases, Liquids and Solids  -  931.1 Mechanics  -  716.1 Information Theory and Signal Processing  -  932.2 Nuclear Physics  -  706 Electric Transmission and Distribution  -  641.3 Mass Transfer  -  631 Fluid Flow  -  701.1 Electricity: Basic Concepts and Phenomena
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21. Accession number:20094512432527
 Title:Active modified atmosphere packaging experiment for Agaricus bisporus
 Authors:Li, Xia1 ; Wang, Xiangyou1 ; Wang, Juan1
 Author affiliation:1 School of Light Industry and Agriculture Engineering, Shandong University of Technology, Zibo 255049, China
 Corresponding author:Wang, X. (wxy@sdut.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:131-137
 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: An L9(3)4 orthogonal test was carried out to evaluate the storage quality of Agaricus bisporus under active modified atmosphere packaging with different temperature, packaging material, O2 and CO2 volumetric concentrations. Weight loss, fructification firmness, degree of browning, the respiration rate, membrane permeability, soluble solid content, polyphenoloxidase (PPO) and peroxidase (POD) activity of Agaricus bisporus were determined on the 3th day, 5th day, 7th day, 9th day, 11th day after storage, respectively. Study results suggested that, storage temperature was the most important factor affecting the storage quality of Agaricus bisporus, and a low storage temperature was essential to the preservation of Agaricus bisporus; the optimum treatment of active modified atmosphere packaging for Agaricus bisporus was that storage temperature 2°C, packaging material PVC2, 15% O2 volumetric concentration, 10% CO2 volumetric concentration.
 Number of references:15
 Main heading:Atmospheric temperature
Controlled terms:Carbon monoxide  -  Packaging  -  Packaging materials  -  Plants (botany)  -  Storage (materials)
Uncontrolled terms:Active modified atmosphere packaging  -  Agaricus bisporus  -  Low-storage  -  Membrane permeability  -  Modified atmosphere packaging  -  Orthogonal test  -  Polyphenol oxidase  -  Respiration rate  -  Soluble solid content  -  Storage quality   -  Storage temperatures  -  Volumetric concentrations  -  Weight loss
Classification code:443.1 Atmospheric Properties  -  461.9 Biology  -  694.1 Packaging  -  694.2 Packaging Materials  -  694.4 Storage  -  804.2 Inorganic Compounds
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22. Accession number:20094512432515
 Title:Performance predicting of centrifugal pumps with compound impeller based on improved BP neural network
 Authors:Yuan, Shouqi1 ; Shen, Yanning1 ; Zhang, Jinfeng1 ; Yuan, Jianping1
 Author affiliation:1 Technology and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Yuan, S. (Shouqiy@ujs.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:77-80 25
 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 Matlab, BP neural network model for efficiency and head of centrifugal pumps with compound impeller predicting was established. Seventy-three groups of experimental data were selected as samples for BP neural network training with Levenberg Marquardt law. Then twelve experimental data extra was random selecting to test the trained BP neural network. The main parameters for experimentation are flow rate Q, the number of blade z, outlet angle of blade β2, inlet diameter of splitter blade Di, outlet width of impeller b2, efficiency η and head H. Select Q, z, β2, Di, b2 as input layer, η and H as output layer. The results show the predicted value favourably accorded with experiment. So it is possible to use BP neural network for predicting performance of centrifugal pumps with compound impeller. BP neural network can be applied to compound impeller designing, which can shorten experimental time and reduce cost.
 Number of references:13
 Main heading:Neural networks
Controlled terms: Centrifugal pumps  -  Hydraulic machinery  -  MATLAB  -  Pumping plants  -  Pumps
Uncontrolled terms:BP neural network  -  BP neural network model  -  BP neural networks  -  Compound impeller  -  Experimental data  -  Improved BP neural network  -  Input layers  -  Levenberg-Marquardt  -  Main parameters  -  Outlet angle   -  Output layer  -  Performance prediction  -  Splitter blade
Classification code:921 Mathematics  -  723.5 Computer Applications  -  723.4 Artificial Intelligence  -  723.1.1 Computer Programming Languages  -  632.2 Hydraulic Equipment and Machinery  -  618.2 Pumps  -  461.1 Biomedical Engineering  -  446 Waterworks  -  402.1 Industrial and Agricultural Buildings
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23. Accession number:20094512432525
 Title:Transient shrinkage of tissue of bio-porous material during dehydration
 Authors:Liu, Xianxi1 ; Chen, Junruo1 ; Liu, Meihong1
 Author affiliation:1 Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650093, China
  Corresponding author:Chen, J. (cjunruo@hotmail.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:122-126
 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 transient shrinkage model was proposed for bio-porous material on the base of the relationship between the shrinking volume and average moisture content of particle. The changes of boundary radius, shrinkage displacement and the tissue shrinkage of every element layer of the pea at 40°C were calculated. As suggested in the result, the external of the pea firstly appeared contraction due to water loss, rather than synchronous contraction from the outside to the inside with the wet sub-external migration and humidity decrease during the drying process for the pea. There is no shrinkage of parts of no loss water. Furthermore, the external shrinked more greatly than the internal due to more water loss in the external of the pea.
 Number of references:15
 Main heading:Shrinkage
Controlled terms: Cements  -  Dehydration  -  Dewatering  -  Moisture -  Porosity  -  Porous materials
Uncontrolled terms:Bio-porous material  -  Drying process  -  Moisture contents  -  No shrinkage  -  Pea  -  Shrinkage model  -  Water loss
Classification code:931.2 Physical Properties of Gases, Liquids and Solids  -  802.3 Chemical Operations  -  802.2 Chemical Reactions  - 951 Materials Science  -  801.4 Physical Chemistry  -  443.1 Atmospheric Properties  -  412.1 Cement  -  537.1 Heat Treatment Processes
 Database:Compendex
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24. Accession number:20094512432524
 Title:Effects of temperature on anaerobic fermentation for biogas production from cabbage leaves
 Authors:Liu, Ronghou1 ; Wang, Yuanyuan1 ; Sun, Chen1
 Author affiliation:1 School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
 Corresponding author:Liu, R. (liurhou@sjtu.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:116-121
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The effects of temperature on anaerobic digestion for biogas production were investigated. The tests were carried out in self-made anaerobic fermentation devices, with cabbage leaves as raw materials. Results showed that the value of VFA, NH 4-N and pH values at mesophilic fermentation ((35±1)°C) was in normal range superior to thermophilic ((55±1) °C) and room temperature. The total yield of biogas at mesophilic fermentation was 42.5% higher than thermophilic fermentation. The CH4 content at mesophilic fermentation was 7.6% and 19.1% higher than thermophilic and room temperature fermentation, respectively. Therefore, mesophilic fermentation condition is considered suitable for biogas production from cabbage leaves.
 Number of references:19
 Main heading:Anaerobic digestion
 Controlled terms:Biogas  -  Fermentation  -  Temperature  -  Thermal effects
Uncontrolled terms:Anaerobic fermentation  -  Biogas production  -  Effects of temperature  -  Mesophilic  -  pH value  -  Room temperature  -  Total yield  -  Vegetable waste
Classification code:951 Materials Science  -  821.5 Agricultural Wastes  -  805.1.1 Biochemical Engineering  -  802.2 Chemical Reactions  -  801.2 Biochemistry  -  641.1 Thermodynamics  -  641 Heat and Mass Transfer; Thermodynamics  -  531 Metallurgy and Metallography  -  522 Gas Fuels  -  461.9 Biology  -  461.8 Biotechnology  -  452.4 Industrial Wastes Treatment and Disposal  -  421 Strength of Building Materials; Mechanical Properties
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25. Accession number:20094512432502
 Title:Kinematic model of tripod sliding universal joints
 Authors:Wang, Xuefeng1 ; Chang, Degong1 ; Wang, Jiangzhong1
 Author affiliation:1 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China
 Corresponding author:Wang, X. (mewangxf@yahoo.com.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:7-11
 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 understand the kinematic properties of the tripod sliding universal joint, its kinematic model was established. First, the relation between the input and output angles and the relative displacements of the slide-rods to the input shaft and to the tripod were obtained by using coordinate transformation technology. And then, the expression of the fluctuation of the joint angle was derived from the cross product of the centerlines of the input and output shafts. The numerical results show that the output angle error, the angular velocity error of the output shaft, the joint angle and the relative displacements of the slide-rods to the input shaft and to the tripod are all periodic and similar to a sinusoid. In addition, the output angle error, the angular velocity error of the output shaft and the joint angle have a threefold frequency of the input shaft, whereas the relative displacements of the slide-rods to the input shaft and to the tripod have simple and twofold frequencies of the input shaft respectively. The gained results agree well with the main documents, and validate the present model.
 Number of references:10
 Main heading:Kinematics
 Controlled terms:Angular velocity  -  Couplings  -  Mining  -  Universal joints
Uncontrolled terms:Centerlines  -  Co-ordinate transformation  -  Cross product  -  Input and outputs  -  Joint angle  -  Kinematic model  -  Kinematic properties  -  Numerical results  -  Property analysis  -  Relative displacement   -  Tripod sliding universal joint
Classification code:502.1 Mine and Quarry Operations  -  601.2 Machine Components  -  602 Mechanical Drives and Transmissions  -  931.1 Mechanics  -  931.3 Atomic and Molecular Physics
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26. Accession number:20094512432530
 Title:Effect on aroma components in persimmon vinegar of various fermentation ways
 Authors:Lu, Zhoumin1 ; Zheng, Hao1 ; Zhao, Wenhong2 ; Bai, Weidong2
 Author affiliation:1 College of Forestry, Northwest Agriculture and Forestry University, Yangling, Shaanxi 712100, China  2 College of Light Industry and Food, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
 Corresponding author:Bai, W. (whitebai2001@yahoo.com.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:148-154
 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 kinds of persimmon vinegar after accomplishing fermentation with natural and conventional fermentation ways was aged for 180 days at 3-6°C. Aroma components in the two kinds of persimmon vinegar were extracted by solid phase micro-extraction (SPME), then separated and analyzed by GCMS. About 63 kinds of volatile compounds were identified from persimmon vinegars with two different fermentation ways, respectively. Acids, esters, alcohols, hydrocarbon, aldoketones, phenols and a few other compounds exist in the volatile compounds. The content of esters, alcohols and hydrocarbon in volatile components from persimmon vinegar fermented with conventional way is 33.78%, 32.38% and 1.08%, respectively, and is bigger than with natural fermentation way. The content of acids, aldoketones and phenols fermented with natural fermentation way is 61.25%, 9.66% and 6.13%, and is bigger than fermented with conventional way. The sensory quality of persimmon vinegar fermented with conventional way is better than fermented with natural fermentation way.
 Number of references:20
 Main heading:Fermentation
Controlled terms: Acetic acid  -  Acids  -  Esterification  -  Esters -  Extraction  -  Hydrocarbons  -  Phenols  -  Volatile organic compounds
Uncontrolled terms:Aroma components  -  GCMS analysis  -  Persimmon vinegar  -  Sensory qualities  -  Solid-phase microextraction  -  SPME  -  Volatile components  -  Volatile compounds
Classification code:805.1.1 Biochemical Engineering  -  804.1 Organic Compounds  -  804 Chemical Products Generally  -  803 Chemical Agents and Basic Industrial Chemicals  -  802.3 Chemical Operations  -  802.2 Chemical Reactions  -  801.2 Biochemistry  -  461.8 Biotechnology  -  451.1 Air Pollution Sources
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27.Accession number:20094512432518
 Title:Cavitation performance research in high-speed magnetic drive pump based on numerical simulation of flow field
 Authors:Kong, Fanyu1 ; Zhang, Hongli1 ; Gao, Cuilan1 ; Liu, Jianrui1
 Author affiliation:1 Technology and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Kong, F. (kongfy2918@sohu.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:89-93
 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 diffuser grid was mounted at the impeller inlet to improve the anti-cavitation properties of high-speed magnetic drive pump. The fluid field of two high-speed magnetic pump, with the diffuser grid and not, was numerical simulated by Fluent program. The distribution of pressure was taken out, and the trace of the particle was plotted. The main characteristics of the interior fluid field of the two pumps were obtained by comparing with two groups of data. The results show that the pump with the diffuser grid of changeable position in axial direction can improve the anti-cavitation performance. The application examples from practical tests favorably validated the results of simulation, which provide theoretical basis for improving the design.
 Number of references:10
 Main heading:Mathematical models
Controlled terms:Cavitation  -  Computer simulation  -  Flow fields  -  Flow simulation  -  Magnetism  -  Pumps  -  Speed
Uncontrolled terms:Application examples  -  Axial direction  -  Cavitation performance  -  Diffuser grid  -  Fluid field  -  High-speed  -  High-speed magnetic drive pump  -  Impeller inlets  - Magnetic drive pumps  -  Main characteristics   -  Numerical simulation  -  Practical tests  -  Theoretical basis  -  Two-pump
Classification code:931.1 Mechanics  -  921 Mathematics  -  723.5 Computer Applications  -  701.2 Magnetism: Basic Concepts and Phenomena  -  631.1.1 Liquid Dynamics  -  631.1 Fluid Flow, General  -  618.2 Pumps
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28. Accession number:20094512432514
 Title:Numerical simulation on gas-liquid two-phase flow in self-priming pump
 Authors:Liu, Jianrui1 ; Su, Qiqin1
 Author affiliation:1 Technology and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Liu, J. (ljrwjj@126.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:73-76
 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: 3-D simulation was performed for the gas-liquid two-phase turbulent flow in self-priming pump by using Fluent software with Mixture model, SIMPLEC algorithm and Realizable turbulence model. The gas-liquid two-phase flow in self-priming pump was investigated in the pressure in the pump, the velocity in the pump, the distribution of gas and liquid phase in the pump. To some extent, the results reveal the self-suction process of the two-phase flow in self-priming pump, and provide references for self-priming pump design.
 Number of references:9
 Main heading:Mathematical models
Controlled terms:Computer software  -  Flow simulation  -  Fluid dynamics  -  Gases  -  Liquids  -  Pumps  -  Simulators  -  Three dimensional  -  Three dimensional computer graphics  -  Turbulence models   -  Two phase flow
Uncontrolled terms:3D simulations  -  Distribution of gas  -  FLUENT software  -  Gas liquids  -  Gas-liquid two-phase flow  -  Liquid Phase  -  Mixture model  -  Numerical simulation  -  Self priming pumps  -  Self-priming capability   -  Self-priming pump  -  SIMPLEC algorithm  -  Suction process
Classification code:671 Naval Architecture  -  723 Computer Software, Data Handling and Applications  -  723.2 Data Processing and Image Processing  -  931.2 Physical Properties of Gases, Liquids and Solids  -  723.5 Computer Applications  -  921 Mathematics  -  931.1 Mechanics  -  902.1 Engineering Graphics  -  662.1 Automobiles -  657.1 Solar Energy and Phenomena  -  443.1 Atmospheric Properties  -  618.2 Pumps  -  621 Nuclear Reactors  -  631.1 Fluid Flow, General  -  654.1 Rockets and Missiles  -  655.2 Satellites
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29. Accession number:20094512432537
 Title:Conceptual design of a novel hybrid machine tool with five-face machining capability
 Authors:Chen, Chun1, 2 ; Huang, Yumei1 ; Han, Xuzhao1 ; Cheng, Xiang1
 Author affiliation:1 School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China  2 School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723000, China
 Corresponding author:Chen, C. (chenchun171261@163.com)
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:187-192
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A conceptual design of a novel six-axis hybrid machine tool with five-face machining capability was proposed. Based on the relative motions between the typical cutter and workpiece, the transformation matrix between the cutter and the workpiece was obtained. The transformation matrix was realized by the hybrid kinematics model of the machine tool. In this conceptual design, the few degree-of-freedom 3PRS parallel mechanism was adoped at the spindle component to realize the linear Z-axis motions and rotary A and B-axis swinging motions, and the XY parallel driven mechanism and the C-axis NC rotation workbench were employed at the worktable side. The spindle component driven by 3PRS parallel mechanism has the capability to swing ±45° by lean layout and designing component reasonably. The kinematics, rigidity and the workspace of the 3PRS parallel mechanism were analyzed. Also the force bearing of the XY parallel platform and the 4 guides of the X- and Y-axis sliding tables was investigated.
 Number of references:9
 Main heading:Machine design
Controlled terms:Conceptual design  -  Kinematics  -  Machine tools  -  Machining  -  Mathematical models  -  Mechanisms
Uncontrolled terms:3PRS spindle component  -  Designing components  -  Five-face machining  -  Hybrid kinematics  -  Hybrid machine tool -  Hybrid machine tools  -  Parallel mechanisms  -  Parallel platforms  -  Relative motion  -  Six-axis   -  Swinging motions  -  Transformation matrices  -  Work pieces  -  XY parallel driving platform
Classification code:931.1 Mechanics  -  921 Mathematics  -  604.2 Machining Operations  -  603.1 Machine Tools, General  -  601.3 Mechanisms  -  601 Mechanical Design  -  408 Structural Design
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30. Accession number:20094512432517
 Title:Improved attempt of non-overload centrifugal pumps based on fluent
 Authors:Wang, Yang1 ; He, Wenjun1
 Author affiliation:1 Technology and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Wang, Y. (pgwy@ujs.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:85-88
 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 performance deficiency of non-overload centrifugal pumps was analyzed. A design idea of non-overload centrifugal pumps was suggested that combined the enlarged flow design with the clogged flow passage design. And, three improved attempts on IS5032160 non-overload centrifugal pump were carried out supported by commerce software Fluent to forecast the performance of centrifugal pumps. The forecast results indicate that by adopting this design thought, the head and efficiency of non-overload centrifugal pumps is increased. Furthermore, a reference is provided for optimal design of low specific speed centrifugal pump.
 Number of references:10
 Main heading:Pumps
Controlled terms:Centrifugal pumps  -  Computational fluid dynamics  -  Design  -  Hydraulic machinery  -  Pumping plants
Uncontrolled terms:Clogged flow passage design  -  Enlarged flow design  -  Fluent  -  Improved attempt  -  Non-overload
Classification code:931.1 Mechanics  -  921.6 Numerical Methods  -  902.1 Engineering Graphics  -  723.5 Computer Applications  -  632.2 Hydraulic Equipment and Machinery  -  631.1.2 Gas Dynamics  -  631.1.1 Liquid Dynamics  -  618.2 Pumps  -  446 Waterworks  -  408 Structural Design  -  402.1 Industrial and Agricultural Buildings
 Database:Compendex
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31. Accession number:20094512432510
 Title:Influence of angle of labyrinth channels on anti-clogging performance of emitter
 Authors:Niu, Wenquan1 ; Yu, Liming1 ; Wu, Pute1 ; Fan, Xingke1 ; Zhang, Lin1
 Author affiliation:1 Institute of Soil and Water Conservation, Northwest A and F University, Yangling, Shaanxi 712100, China
 Corresponding author:Wu, P. (gjzwpt@vip.sina.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:51-55 67
 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 influences of angles (45.0°, 60.0°, 67.5°, 75.0°) of dental labyrinth channels drip emitter on hydraulic and anti-clogging performance was studied by the following methods: the CFD numerical simulation of the velocity in the flow field, the PIV observation of the trajectories and velocity of particles in flow path and the samples experiment. The results showed that there is a negative relationship between angle and discharge coefficient together with flow state exponent, in addition with the increasing of the angle of emitters, the anti-clogging ability declines. Therefore, combining the hydraulic and anti-clogging performance, a reasonable angle of 60.0° is put forward.
 Number of references:25
 Main heading:Computational fluid dynamics
 Controlled terms:Computer simulation  -  Flow simulation  -  Numerical methods
Uncontrolled terms:Angle  -  Anti-clogging performance  -  Discharge coefficients  -  Drip emitter  -  Emitter  -  Flow path  -  Flow state  -  Labyrinth channels  -  Numerical simulation  -  Velocity of particles
Classification code:631.1 Fluid Flow, General  -  631.1.1 Liquid Dynamics  -  631.1.2 Gas Dynamics  -  723.5 Computer Applications  - 921.6 Numerical Methods  -  931.1 Mechanics
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32. Accession number:20094512432507
 Title:Development of integrative performance test bench of the vehicle ABS ECU
 Authors:Zhang, Wei1 ; Ding, Nenggen1 ; Yu, Guizhen1 ; Wang, Weida1 ; Xu, Xiangyang1
 Author affiliation:1 School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
 Corresponding author:Zhang, W. (zhw@ae.buaa.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:37-40
 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 ABS ECU indoor performance testing bench was developed to test the ECU fault diagnosis and control functions. The test bench consisted of the reoccurrence equipment of wheel speed signals, the measuring and controlling system, the data collection system, the basic brake system and the constant-pressure hydraulic power. The test result shows that the bench can satisfy the requirement of testing the ECU control. It was easy to set the faults of sensors, and easy to test the ECU diagnosis function for the test bench.
 Number of references:6
 Main heading:Testing
 Controlled terms:Failure analysis  -  Hydraulic machinery
Uncontrolled terms:ABS  -  Brake systems  -  Control functions  -  Controlling system  -  Data collection system  -  Fault diagnosis  - Hydraulic power  -  Performance test  -  Performance testing  -  Performance tests   -  Test bench  -  Test benches  -  Test results  -  Wheel speed signal
Classification code:421 Strength of Building Materials; Mechanical Properties  -  422.2 Test Methods  -  423.2 Test Methods  -  632.2 Hydraulic Equipment and Machinery  -  921 Mathematics
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33. Accession number:20094512432541
 Title:Coupling mechanism of hydrophobicity of dragonfly wing surface
 Authors:Wan, Yanling1 ; Cong, Qian1 ; Wang, Xiaojun1, 2
 Author affiliation:1 Key Laboratory for Bionic Engineering, Jilin University, Changchun 130025, China  2 School Chemistry and Life Science, Changchun University of Technology, Changchun 130012, China
 Corresponding author:Cong, Q. (congqian@jlu.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:205-208
 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: By means of scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and optical contact angle measuring instruments, the microstructure, ingredient and hydrophobicity of dragonfly wing surface was investigated. Results show that dragonfly wing surface is covered with large number of papilla, leading to the composite contact between liquid droplet and dragonfly wing surface, which enhances the hydrophobicity of dragonfly wing surface. The waxy layer increases the hydrophobic capacity of dragonfly wing surface. Moreover, the hydrophobic equation of dragonfly wing surface was established through the Cassie model, and the multivariate coupling mechanism of dragonfly wing surface was analyzed. It is the conclusion that the hydrophobicity ascribes to co-coupling of the microstructure and ingredient of dragonfly wing surface.
 Number of references:12
 Main heading:Hydrophobicity
Controlled terms:Contact angle  -  Fourier transform infrared spectroscopy  -  Microstructure  -  Scanning electron microscopy  -  Spectroscopic analysis  -  Spectroscopy
Uncontrolled terms:Angle measuring  -  Composite contacts  -  Coupling mechanism  -  Dragonfly  -  Liquid droplets  -  Optical contact  -  Scanning electron microscopes  -  Wing surface
Classification code:933 Solid State Physics  -  932.2 Nuclear Physics  -  931.3 Atomic and Molecular Physics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  931.1 Mechanics  -  951 Materials Science  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  801 Chemistry  -  741.1 Light/Optics  - 631.1.1 Liquid Dynamics  -  531.2 Metallography  -  801.4 Physical Chemistry
 Database:Compendex
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34. Accession number:20094512432526
 Title:Refrigeration performance of a silica GelWater adsorption chiller driven by variable heat source
 Authors:Kong, Xiangqiang1 ; Wang, Ruzhu2 ; Li, Ying1
 Author affiliation:1 School of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266510, China  2 School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
 Corresponding author:Kong, X. (kxqiangly@126.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:127-130 160
 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: Due to the variable heat source problem for an adsorption cooling system in the practice, a silica gelwater adsorption chiller was experimentally studied, which was driven by recovered heat from gas engine. The chiller consisted of two desorption/adsorption chambers and one heat-pipe working chamber of evaporator. The experimental results show that the cooling power with the 65°C variable hot water temperature attains 63% of one under 90°C, and the COP (coefficient of performance) of the chiller has a small change which may be ignored. The transient refrigeration performance of the chiller has the good repeatability and stability. It was proved that the chiller driven by variable heat source is very reliable and good for low-grade heat source. This technology approach is feasible to be used for low temperature grain storage with combination of adsorption cooling and solar thermal or waste heat utilization.
 Number of references:11
 Main heading:Cooling systems
Controlled terms:Adsorption  -  Capillary tubes  -  Cooling  -  Gas engines  -  Refrigeration  -  Silica  -  Thermodynamics  -  Waste heat  -  Waste heat utilization  -  Water
Uncontrolled terms:Adsorption chiller  -  Adsorption cooling  -  Coefficient of Performance  -  Cooling power  -  Grain storage  -  Heat sources  -  Hot water  -  Low temperature grain storage  -  Low temperatures  -  Low-grade heats   -  Refrigeration performance  -  Solar thermal  -  Thermodynamic characteristics  -  Variable heat source  -  Working chambers
Classification code:641.2 Heat Transfer  -  642.1 Process Heating  - 643.1 Space Heating  -  644.1 Refrigeration Methods  -  644.3 Refrigeration Equipment and Components  -  644.4 Cryogenics  -  802.3 Chemical Operations  -  804.2 Inorganic Compounds  -  812 Ceramics, Refractories and Glass  -  641.1 Thermodynamics  -  444 Water Resources  -  454.2 Environmental Impact and Protection  -  482.2 Minerals  -  525.3 Energy Utilization  -  525.4 Energy Losses (industrial and residential)  -  612.3 Gas Turbines and Engines  -  614.1 Steam Power Plant Design and Construction  -  616.1 Heat Exchange Equipment and Components  -  619.1 Pipe, Piping and Pipelines
 Database:Compendex
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35. Accession number:20094512432538
 Title:Algorithm of scattered point cloud data reduction based on non-uniform subdivision
 Authors:Zhou, Yu1 ; Lei, Yu2 ; Du, Farong1 ; Yao, Xiaojiang1
 Author affiliation:1 School of Transportation Science and Engineering, Beihang University, Beijing 100191, China  2 Yunnan Provincial Equipment Bureau, Kunming 650032, China
 Corresponding author:Zhou, Y. (zy0741@sina.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:193-196 219
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: For reduction of scattered point cloud data, one algorithm based on non-uniform subdivision was put forward. The space partition of point cloud was generated using octree structure. k neighborhood was constructed through partition result. All the points in the k neighborhood were approximated by quadratic parametric surface of which the mean curvature determined whether to carry out non-uniform subdivision for the octree space or not. In the process of subdivision, the degree of subdivision depended on the maximum interval angle of each data point. Boundary points were identified and protected by constructing curvature difference function. The algorithm was applied for reduction of point cloud with curvature diversification. The reliability and accuracy of the algorithm were validated by experimentation.
 Number of references:8
 Main heading:Data reduction
 Controlled terms:Algorithms  -  Reengineering  -  Reverse engineering  -  Statistics
Uncontrolled terms:Boundary points  -  Boundary points protection  - Data points  -  Difference functions  -  Mean curvature  -  Non-uniform subdivision  -  Nonuniform  -  Parametric surfaces  -  Point cloud  -  Scattered point cloud   -  Scattered points  -  Space partition
Classification code:723 Computer Software, Data Handling and Applications  -  723.2 Data Processing and Image Processing  -  912.2 Management  -  913.3 Quality Assurance and Control  -  921 Mathematics  -  922.2 Mathematical Statistics
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36. Accession number:20094512432505
 Title:Optimization of plug-in hybrid electric vehicle energy management control strategy
 Authors:Zhang, Bo1 ; Li, Jun1 ; Gao, Ying1 ; Yang, Shichun1 ; Yang, Chenghong1 ; Chen, Huayan2
 Author affiliation:1 State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130025, China  2 Department of Petty Officer, Academy of Equipment Command and Technology, Beijing 102249, China
 Corresponding author:Li, J. (junli610@263.net)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:20-25
 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: By using powertrain system analysis toolkit (PSAT) which is kind of software with forward simulation approach and divided rectangles (DIRECT) global optimization algorithm, an energy management control strategy for a parallel plug-in hybrid electric vehicle (PHEV) on different charging depleting range (CDR) were studied. The results show that as the CDR increases, the impact of control strategy parameters on PHEV economic performance becomes smaller. By applying small-CDR optimal control parameters to PHEV, its average economic performance is better than that of large-CDR optimal control parameters. The final optimal energy management control strategy can reduce PHEV average equivalence fuel consumption to 2.70L/(100km), which is 58% lower than that of prototype vehicle.
 Number of references:7
 Main heading:Optimization
Controlled terms:Control system analysis  -  Electric automobiles  - Energy management  -  Global optimization  -  Industrial management   -  Optimal systems  -  Parallel algorithms  -  Secondary batteries  -  Vehicles
Uncontrolled terms:Control strategies  -  Economic performance  -  Energy management strategy  -  Forward simulation  -  Global optimization algorithm  -  Management control  -  Optimal controls  -  Optimal design  -  Optimal energy  -  Plug-in hybrid electric vehicle   -  Power-train systems  -  Prototype vehicles  -  Simulation
Classification code:921.5 Optimization Techniques  -  921 Mathematics  -  912.2 Management  -  731.1 Control Systems  -  961 Systems Science  -  723 Computer Software, Data Handling and Applications  -  662.1 Automobiles  -  525 Energy Management and Conversion  -  432 Highway Transportation  -  702.1.2 Secondary Batteries
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37. Accession number:20094512432501
 Title:Supervisory control framework for integrated vehicle chassis control and its simulation
 Authors:Wang, Jinxiang1 ; Chen, Nan1
 Author affiliation:1 School of Mechanical Engineering, Southeast University, Nanjing 211189, China
 Corresponding author:Chen, N. (nchen@seu.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:1-6 11
 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 stability characteristic was represented by coupling of state variables, the front or rear tyre side slip angle and its angular velocity. To improve the maneuverability and stability of vehicle, a fuzzy supervisory control based on integrated control algorithm was implemented to coordinate the subsystems of the vehicle chassis control system. According to the control weights assigned by the upper supervisory controller, the subsystems including active steering control, active driveline control and active brake control were proposed to achieve their performance targets independently. An 8-degree-of-freedom nonlinear vehicle model was used in simulation to verify the integrated algorithm through critical test maneuvers. Simulation results confirm that, compared with the conventional stand-alone or combined controllers, the proposed hierarchical control algorithm provides vehicle with better performance of maneuverability and stability, while avoiding conflicts among the subsystems and decreasing consumption of the control.
 Number of references:12
 Main heading:Control system stability
Controlled terms:Algorithms  -  Automobile frames  -  Controllers  - Force measurement  -  Fuzzy control  -  Maneuverability  -  SCADA systems  -  System stability
Uncontrolled terms:Active brake control  -  Active steering control  -  Drivelines  -  Fuzzy supervisory controls  -  Hierarchical control  -  Hierarchical supervisory control  -  Integrated algorithm  -  Integrated chassis control  -  Performance targets  -  Sideslip angles   -  Simulation  -  Simulation result  -  Stand -alone  -  State variables  -  Supervisory control  -  Supervisory controllers  -  Vehicle chassis  -  Vehicle model  -  Vehicle stability
Classification code:961 Systems Science  -  731 Automatic Control Principles and Applications  -  731.1 Control Systems  -  731.4 System Stability  -  732.1 Control Equipment  -  921 Mathematics  -  943.2 Mechanical Variables Measurements  -  723.4 Artificial Intelligence  -  671.1 Ship Design  -  663.2 Heavy Duty Motor Vehicle Components  -  662.4 Automobile and Smaller Vehicle Components  -  655.1 Spacecraft, General  -  652.1 Aircraft, General -  723 Computer Software, Data Handling and Applications
 Database:Compendex
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38. Accession number:20094512432536
 Title:Module partition method for product design
 Authors:Wang, Rijun1 ; Zhang, Jinsheng1 ; Ge, Peiqi1 ; Wang, Zhi1
 Author affiliation:1 School of Mechanical Engineering, Shandong University, Ji'nan 250061, China
 Corresponding author:Wang, R. (rijunwang@yahoo.com.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:189-186
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A module partition method for product design was proposed. Firstly, fuzzy dendrogram clustering algorithm was used to illustrate the generating process of modules based on the correlativity analysis of function and structure between the sub-structures of product and then several module partition programs were obtained. Secondly, based on information entropy theory, mathematical evaluation model of module partition program for product design which considering the complexity of cross-series design, longitudinal series design and replacement design as the optimization goal was established, by which module partition programs obtained from fuzzy dendrogram clustering algorithm can be evaluated in order to get the most reasonable module division program. Lastly, straight-lead flower-line products machining equipment was used to illustrate the validity and rationality of the proposed method.
 Number of references:12
 Main heading:Product design
 Controlled terms:Clustering algorithms  -  Fuzzy clustering  -  Partitions (building)
Uncontrolled terms:Complexity  -  Correlativity analysis  -  Evaluation models  -  Fuzzy dendrogram  -  Information entropy  -  Machining equipments  -  Modular design  -  Module partition  -  Sub-structures
Classification code:402 Buildings and Towers  -  408.2 Structural Members and Shapes  -  721 Computer Circuits and Logic Elements  -  723 Computer Software, Data Handling and Applications  -  903.1 Information Sources and Analysis  -  913.1 Production Engineering
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39. Accession number:20094512432521
 Title:3-D modeling of hydraulic turbine draft tube based on Pro/E
 Authors:Qi, Xueyi1 ; Ma, Huiping1 ; Yang, Guolai1 ; Min, Zheng1
 Author affiliation:1 College of Fluid Power and Control, Lanzhou University of Technology, Lanzhou 730050, China
 Corresponding author:Qi, X. (qixy@lut.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 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:For the sake of CFD simulation on the turbine flow field and practical manufacturing, the 3-D modeling of bent-elbow draft tube was analyzed, which showed that the common methods have a fussy process, not easy to modify and smooth. Therefore, this paper proposed a new method that overcomes the defect of the common method, has simple process, generates smooth surface, modifies flexible, and has a large adaptability. So the design intent can be more accurately realize through this method. Validated by instance and CFD analysis, the design method of draft tube agrees with the requirement of design assumption, and the flow of the draft tube are smooth and good.
 Number of references:7
 Main heading:Three dimensional
Controlled terms:Computational fluid dynamics  -  Engines  -  Flow simulation  -  Hydraulic machinery  -  Hydraulic motors  -  Hydraulic structures  -  Hydraulic turbines  -  Industrial applications  -  Tubes (components)
Uncontrolled terms:3-d modeling  -  CFD  -  CFD analysis  -  CFD simulations  -  Design intent  -  Design method  -  Draft tube  -  Draft tubes  -  Hydraulic turbine draft tube  -  Modeling   -  Pro/E -  Smooth surface  -  Turbine flows
Classification code:631.1.2 Gas Dynamics  -  632.2 Hydraulic Equipment and Machinery  -  654.2 Rocket Engines  -  723.5 Computer Applications  -  631.1.1 Liquid Dynamics  -  901.4 Impact of Technology on Society  -  913 Production Planning and Control; Manufacturing  -  921.6 Numerical Methods  -  931.1 Mechanics  -  902.1 Engineering Graphics  -  631.1 Fluid Flow, General  -  441 Dams and Reservoirs; Hydro Development  -  446.2 Related Hydraulic Structures  -  511.2 Oil Field Equipment  -  611 Hydroelectric and Tidal Power Plants  -  407.2 Waterways  -  612 Engines  -  617.1 Hydraulic Turbines  -  617.3 Steam Engines  -  619.1 Pipe, Piping and Pipelines  -  616.1 Heat Exchange Equipment and Components
 Database:Compendex
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40. Accession number:20094512432512
 Title:Optimization of pumping tree pipe network by using annealing-genetic algorithms based on infeasible degree
 Authors:Wang, Xinkun1
 Author affiliation:1 Technology and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
 Corresponding author:Wang, X. (xjwxk@126.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:63-67
 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 assumption that every section of pipeline is composed of two diameters, a mathematical model for optimizing the pumping tree pipe network was presented with the objective function of annual cost, using pump head, pipe length and standard diameter as decision variable. The infeasible degree function of solution in the species group was defined, and the constraint condition was handled by adopting annealing algorithm based on the infeasible degree of solution. The infeasible degree of solution was locally optimized through simulated annealing, to make it gradually approach feasible solution. Combined with the genetic algorithm global optimization and good local search capabilities of simulated annealing, a simulated annealing-genetic algorithm for the optimized design of the pumping tree pipe network was established. Simulation results showed that the model and algorithms have good performance for optimizing the pumping tree pipe network.
 Number of references:18
 Main heading:Simulated annealing
Controlled terms:Annealing  -  Computer simulation  -  Functions  -  Genetic algorithms  -  Global optimization  -  Mathematical models  -  Pipe  -  Pumps
Uncontrolled terms:Annealing algorithm  -  Annealing genetic algorithm  -  Annual cost  -  Constraint conditions  -  Decision variables  -  Feasible solution  -  Infeasible degree  -  Local search  -  Objective functions  -  Optimized designs   -  Pipe networks  -  Pump head  -  Simulation result  -  Tree pipe network
Classification code:921.5 Optimization Techniques  -  921 Mathematics  -  723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  619.1 Pipe, Piping and Pipelines  -  618.2 Pumps  -  537.1 Heat Treatment Processes
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41.Accession number:20094512432511
 Title:Comparison among permeability methods of disc infiltrometer
 Authors:Fu, Qiuping1, 2 ; Wang, Quanjiu1 ; Fan, Jun1
 Author affiliation:1 State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource, Yangling, Shaanxi 712100, China  2 Graduate School, Chinese Academy of Sciences, Beijing 100039, China
 Corresponding author:Wang, Q. (wquanjiu@163.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:56-62
 Language:Chinese
 ISSN:10001298
 CODEN:NUYCA3
 Document type:Journal article (JA)
 Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Disc infiltrometer with two diameters (diameter of 5cm and 15cm) and two distinctly textured soil (Yangling caly soil and Shenmu sandy loam soil) were used to carry out disc 3-D laboratory infiltration experiment under five pressure heads (0,-3,-6,-9,-12cm). The effects of different disc diameters and pressures on cumulative infiltration were studied. Four methods of estimating sorptivity were applied to calculate permeability of these two soils and their applicability were analyzed according to Vandervaere equation. The results are as followed: the cumulative infiltration capacity of 5cm disc diameter is bigger than that of 15cm disc diameter in the same while. The cumulative infiltration capacity of Shenmu soil is higher than that of Yangling soil under the same pressure. Among these four methods, Haverkamp equation provides the closest estimate to the references for the two textured soil.
 Number of references:21
 Main heading:Soils
 Controlled terms:Capillarity  -  Seepage  -  Soil mechanics
Uncontrolled terms:Calculation methods  -  Disc infiltrometer  -  Infiltration capacity  -  Pressure heads  -  Sandy loam soils  -  Soil permeability  -  Sorptivity
Classification code:407 Maritime and Port Structures; Rivers and Other Waterways  -  441 Dams and Reservoirs; Hydro Development  -  483.1 Soils and Soil Mechanics  -  631.1 Fluid Flow, General  -  931.2 Physical Properties of Gases, Liquids and Solids
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42. Accession number:20094512432528
 Title:Ultrasonic degradation of patulin in apple juice
 Authors:Gao, Zhenpeng1 ; Yue, Tianli1 ; Yuan, Yahong1 ; Fu, Xiaoliang1 ; Peng, Bangzhu1
 Author affiliation:1 College of Food Science and Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
 Corresponding author:Yue, T. (ytl6503@163.com)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:138-142
 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 reduce the content of patulin in apple juice and improve the security, the ultrasonic degradation technology of patulin was studied. Based on the single-factor test, the optimum condition of ultrasonic was developed through orthogonal design. The results showed that the best process parameters of patulin ultrasonic degradation in apple juice is power 420W, time 90min, frequency 28kHz, temperature 30°C, with the patulin degradation rate of 69. 43%. There is minor impact on the key quality parameters of apple juice.
 Number of references:18
 Main heading:Degradation
 Controlled terms:Fruit juices  -  Fruits  -  Ultrasonics
Uncontrolled terms:Apple juice  -  Degradation rate  -  Key quality parameters  -  Optimum conditions  -  Orthogonal design  -  Patulin  -  Process parameters  -  Ultrasonic degradation
Classification code:753.1 Ultrasonic Waves  -  802.2 Chemical Reactions  -  821.4 Agricultural Products  -  822.3 Food Products
 Database:Compendex
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43. Accession number:20094512432540
 Title:Computer simulation and design on bionic slippery microstructure surfaces
 Authors:Zhou, Qiang1 ; Zhou, Rongwei2 ; Wang, Lixin1 ; Niu, Huli1
 Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China  2 National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, China
 Corresponding author:Zhou, Q. (zq@cau.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:201-204 208
 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: In order to design and manufacture the bionic skateboard with the super slippery function for catching insects, simulation on bionic slippery microstructure surfaces based on OpenGL was presented and performed. The wax microstructure of Nepenthes' pitcher superfaces was examined in scanning electronic microscopy S3400N, and the images were collected for digital image processing and analyzing. Under the Visual C 6.0 compile environment, the graphics development framework of the OpenGL was established to realize the visualized simulation system of wax crystal layer, for different status parameters. The simulation results show that simulation crystal plates' length, thickness and height were  (1.00±0.20) μm, (0.10±0.02)μm and (1. 00±0.70) μm respectively. Compared with experiment data, the computer simulation has well accuracy and operation performance.
 Number of references:9
 Main heading:Computer simulation
Controlled terms:Bionics  -  Computational methods  -  Digital image storage  -  Image processing  -  Microstructure
Uncontrolled terms:Crystal plates  -  Digital image processing  -  Experiment data  -  Nepenthes  -  OpenGL  -  Operation performance  -  Scanning electronic microscopy  -  Simulation  -  Simulation result  -  Visual C 6.0   -  Visualized simulation  -  Wax crystals
Classification code:951 Materials Science  -  731.1 Control Systems  -  741 Light, Optics and Optical Devices  -  741.3 Optical Devices and Systems  -  801.4 Physical Chemistry  -  921 Mathematics  -  933 Solid State Physics  -  723.5 Computer Applications  -  722.4 Digital Computers and Systems  -  722.1 Data Storage, Equipment and Techniques  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  531.2 Metallography  -  461.1 Biomedical Engineering  -  723.2 Data Processing and Image Processing
 Database:Compendex
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44. Accession number:20094512432509
 Title:Simulation and experimental analysis on sand-wall collisions in labyrinth channel emitter
 Authors:Ge, Lingxing1 ; Wei, Zhengying1 ; Tang, Yiping1 ; Wu, Songpo1 ; Lu, Bingheng1
 Author affiliation:1 State Key Laboratory of Manufacturing System Engineering, Xian Jiaotong University, Xi'an 710049, China
 Corresponding author:Wei, Z. (zywei@mail.xjtu.edu.cn)
 Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title:Nongye Jixie Xuebao
 Volume:40
 Issue:9
 Issue date:September 2009
 Publication year:2009
 Pages:46-50
 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 process of sand-wall collision was performed to analyze the relationship between the collision and clogging of labyrinth channel emitter. First, the effect of Rc on pass rate of sand was analyzed using the CFD method. It was found that Rc has a great impact on the anti-clogging characteristics of labyrinth emitter and should be determined through experiments. In order to provide the experimental basis for the setting of sand Rc in numerical simulation, experiments of PTV were carried out for the determination of Rc under various pressure and different structure of labyrinth channel emitter, so that the anti-blocking performance can be more accurately evaluated.
 Number of references:11
 Main heading:Particle beam tracking
 Controlled terms:Computer simulation  -  Sand  -  Velocimeters  -  Velocity measurement
Uncontrolled terms:Clogging  -  Emitter  -  Labyrinth channel  -  Particle tracking velocimetry  -  Resilience coefficients
Classification code:483.1 Soils and Soil Mechanics  -  505 Mines and Mining, Nonmetallic  -  723.5 Computer Applications  -  932.1 High Energy Physics  -  943.3 Special Purpose Instruments
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45. Accession number: 20094712458055
 Title: Research on drawing mine map of backhoe hydraulic excavator
 Authors: Huang, Bin1 ; He, Qinghua1, 2 ; He, Jilin1, 2 ; Wang, Beizhan1 ; Jiang, Raobao1
Author affiliation: 1 Key Laboratory of Modern Complex Equipment Design and Extreme Manufacturing, Central South University, Changsha 410083, China
2 Hunan Sunward Intelligent Machinery Co., Ltd., Changsha 410100, China
 Corresponding author: He, Q. (hqh@mail.csu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated source title: Nongye Jixie Xuebao
 Volume: 40
 Issue: 9
 Issue date: September 2009
 Publication year: 2009
 Pages: 26-31 45
 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: Models of the position and tool forces of backhoe hydraulic excavator were built based on the full analysis of kinematics, kinetic performance of working device and mathematic model of tool forces. Various restrictive factors of tool forces, which appeared in the work process, were discussed. A computation program based on VB 6.0 was compiled, which was used to calculate tool forces in any position of the working area. Computer plotting of drawing mine map that was divided by restricting factors was realized. The experimental results demonstrated the feasibility of this method.
 Number of references: 12
 Main heading: Excavators
Controlled terms: Conformal mapping  -  Construction equipment  -  Excavation  -  Maps  -  Mathematical models  -  Mines  -  Mining  -  Mining machinery
Uncontrolled terms: Backhoe hydraulic excavator  -  Computation program  -  Drawing mine map  -  Hydraulic excavator  -  Mathematic model  -  Mathematic model of tool forces  -  Motion analysis  -  Restricting factors  -  Work process  -  Working device
Classification code:  921 Mathematics  -  902.1 Engineering Graphics  -  502.2 Mine and Quarry Equipment  -  502.1 Mine and Quarry Operations  -  405.3 Surveying  -  405.2 Construction Methods  -  405.1 Construction Equipment
 Database: Compendex
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