2008年第39卷第2期共收录42篇

  1.   Accession number:  081911244826
 Title:  Program for strength checking of pump volute case
 Authors:  Jiang, Xiaoping; Shi, Weidong; Wang, Zhun; Lang, Tao 
 Author affiliation:  Jiangsu University, Zhenjiang 212013, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 77-80
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Strength calculation and checking of key pumps parts have great effects on performance and lifespan of complete machines, conventional methods of strength checking could hardly meet the demands in design precision and efficiency. During the past years, researchers of Jiangsu University have been studying on it and developed a suit of software that was utility to solve this problem. Models of program for strength calculation of volute case over the corresponding theory have been established. The development platform, tools and several key technologies were described and analyzed in detail. The running results of the program are accurate and the program has great prospects in application.
 Number of references:  9
 Ei main heading:  Pumps
 Ei controlled terms:  Calculations  -  Computer software
 Uncontrolled terms:  Volute case  -  Strength checking  -  ObjectARX  -  Visual C
 Ei classification codes:  618.2 Pumps  -  723 Computer Software, Data Handling and Applications  -  921 Mathematics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  2.   Accession number:  081911244827
 Title:  Study on the production technology of colorless and high fructose content concentrated apple juice
 Authors:  Gao, Zhenpeng; Yue, Tianli; Yuan, Yahong; Wang, Yunyang 
 Author affiliation:  Northwest A and F University, Yangling 712100, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 81-84 143
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The production technologies of high fructose, colorless, acid free concentrated apple juice were studied to acquire high fructose content apple juice by the experiment of sucrase digestion, resin decolourization and de-acidification. The best conditions of sucrase digestion, decolourization and de-acidification were determined by orthogonal experiment. The results suggested that the optimal condition of sucrase digestion were that pH was 4.5, apple juice concentration was 120 g/L, sucrase concentration was 7 mg/kg and temperature was 55°C; Decolourization condition of resin XDA-5 were that pH was 3.5, concentration of apple juice was 200 g/L, temperature was 50°C and fluid velocity was 150 mL/h; The best absorption condition of fruitacid by resin D380 were that apple juice concentration was 300 g/L, fluid velocity was 180 mL/h and temperature was 25°C.
 Number of references:  11
 Ei main heading:  Food processing
 Ei controlled terms:  Fructose  -  Temperature  -  Velocity  -  pH
 Uncontrolled terms:  High fructose content concentrated apple juice  -  Decolotion  -  De acidification  -  Sucrose transformation
 Ei classification codes:  641.1 Thermodynamics  -  801.1 Chemistry, General  -  804.1 Organic Compounds  -  822.2 Food Processing Operations  -  931.1 Mechanics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 3.  Accession number:  081911244828
 Title:  Study on synthesis of sucrose polyester by response surface method
 Authors:  Liu, Zhongdong; Li, Kun; Gao, Li; Liu, Huihua; Shi, Zijin; Yuan, Changgui 
 Author affiliation:  He'nan University of Technology, Zhengzhou 450052, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 85-88
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Disaccharides and long chain fatty acids are used as raw materials to directional and controllable synthesize emulsifier, which is one of routes of effectively using low-value agricultural raw materials. Its realization methods include the enzyme method, the physical-assisted method and chemical synthesis method. Sucrose polyester was synthesized with methyl oleate and sucrose. The optimum reaction conditions are: methyl oleate/sucrose=10 (mol/mol); catalyzer is 2.06 g; reaction temperature is 138.06°C; reaction time is 5.80 h. The product yield reached 97.2%. The result indicated that synthesis of sucrose polyester by two-step method has high-yield.
 Number of references:  6
 Ei main heading:  Food processing
 Ei controlled terms:  Enzymes  -  Fatty acids  -  Polyesters  -  Raw materials  -  Sugar (sucrose)  -  Synthesis (chemical)  -  Temperature
 Uncontrolled terms:  Sucrose polyester  -  Techniques  -  Response surface method  -  Physical assisted method
 Ei classification codes:  641.1 Thermodynamics  -  801.2 Biochemistry  -  804.1 Organic Compounds  -  822.2 Food Processing Operations  -  951 Materials Science
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 4.  Accession number:  081911244829
 Title:  Study on extraction of polysaccharide from inonotus obliquus by high intensity pulsed electric fields
 Authors:  Yin, Yongguang; Cui, Yanru; Wang, Ting 
 Author affiliation:  Jilin University, Changchun 130025, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 89-92
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Extraction of polysaccharide from Inonotus obliquus by way of applying high intensity pulsed electric fields (PEF) was studied. Through single-factor experiments and orthogonal experiment, the effect of PEF on polysaccharide extraction rate(ER) was discussed, and the comparison of alkali extraction method (TAEM), microwave-assist extraction method (MAEM) and ultrasonic-assist extraction method (UAEM) has been done. A set of optimal parameters (PEF strength=30 kV/cm, pulse number=6, pH=10, liquid/solid ratio=25 mL/g) were tested and analyzed, at which the ER could be up to 49.8%, 1.67 times of that by using TAEM, 1.12 times of MAEM, and the purity of polysaccharide was 1.40 times of UAEM. The experiments proved that PEF technique is an effective way to extract polysaccharide from the Inonotus obliquus, with higher extraction rate, shorter time (12 μs), and less impurities.
 Number of references:  9
 Ei main heading:  Polysaccharides
 Ei controlled terms:  Electric fields  -  Extraction  -  Impurities  -  Microwaves  -  Ultrasonics  -  pH
 Uncontrolled terms:  Inonotus obliquus  -  High intensity pulsed electric field  -  Extraction rate(ER)  -  Alkali extraction method  -  Ultrasonic assist extraction method (UAEM)
 Ei classification codes:  701.1 Electricity: Basic Concepts and Phenomena  -  711 Electromagnetic Waves  -  753.1 Ultrasonic Waves  -  801.1 Chemistry, General  -  802.3 Chemical Operations  -  804.1 Organic Compounds  -  951 Materials Science
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 5.  Accession number:  081911244830
 Title:  Research on extraction technology of resveratrol from roots of peanut
 Authors:  Shan, Huijun; Zhang, Mingwei; Zhang, Ruifen; Chi, Jianwei; Zhang, Yan; Wei, Zhencheng 
 Author affiliation:  Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 93-97 138
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Resveratrol is a kind of bioactive substance with diverse biological activities. The technology of extracting resveratrol from the roots of peanuts was investigated with the yield of resveratrol as the guide. Ethanol was chosen as the extract solvent from four kinds of solvents. Based on single factor experiment, the extraction conditions were optimized by orthogonally rotational combination design. The optimum extraction conditions are as follows: the concentration of ethanol is 61.48%, the temperature is 69.97°C, the rate of solution to solid is 38.94 mL/g, extraction time is 1 h. and the number of extraction times is one. Under these optimized conditions, the yield of resveratrol is 0.32%.
 Number of references:  8
 Ei main heading:  Food processing
 Ei controlled terms:  Ethanol  -  Extraction  -  Optimization  -  Solvents  -  Temperature
 Uncontrolled terms:  Peanut roots  -  Resveratrol  -  Extraction technology  -  Biological activities
 Ei classification codes:  641.1 Thermodynamics  -  802.3 Chemical Operations  -  804.1 Organic Compounds  -  822.2 Food Processing Operations  -  921.5 Optimization Techniques
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  6.  Accession number:  081911244831
 Title:  Optimized experiment on technological parameters for freeze-drying of pteridium aquilinum
 Authors:  Che, Gang; Wan, Lin; Li, Chenghua; Wang, Chun 
 Author affiliation:  Heilongjiang August First Land Reclamation University, Daqing 163319, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 98-102
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The influence of drying parameters of freeze-drying on quality of pteridium aquilinum drying was investigated, and the impact of drying board temperature, drying chamber pressure and material thickness on Vc content was studied by nonlinear regressional orthogonal design. Using single-and-double-factor analysis method, the relation between experimental criteria and drying parameters was established, and the influence order of the parameters was determined. Experimental results showed that drying chamber pressure had the greatest influence than drying board temperature and material thickness. The optimal combination of the preserved quality parameters for the freeze-drying technology of pteridium aquilinum was obtained through optimized theory in nonlinear method. They were as follows: the pressure of drying chamber was 55 Pa, the temperature of the board was 42.5°C, and material thickness was 16.3 mm. Vc mass ratio is 2.387 mg/g.
 Number of references:  12
 Ei main heading:  Food processing
 Ei controlled terms:  Drying  -  Pressure  -  Temperature
 Uncontrolled terms:  Pteridium aquilinum  -  Freeze drying  -  Quality  -  Single double factor analysis method
 Ei classification codes:  641.1 Thermodynamics  -  802.3 Chemical Operations  -  822.2 Food Processing Operations  -  931.1 Mechanics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  7.  Accession number:  081911244832
 Title:  Optimum technology of improvement emulsifying properties of soybean protein isolate by multiple enzymes
 Authors:  Xu, Honghua; Liu, Xin; Wen, Qibiao 
 Author affiliation:  South China University of Technology, Guangzhou 510640, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 103-106 102
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  An experimental method based on controlled mixture ratio of different enzymes in order to improve the emulsifying properties of soybean protein isolate was proposed. The model between the emulsifying properties of partial hydrolysis soybean protein and mixture ratio with aspergillus oryzae proteinase, papain and trypsin was established. The result of enzymes proportion was that aspergillus oryzae protease was 11.79%, papain was 32.93%, trypsin was 55.28%. The optimum hydrolysis condition was obtained by adding 3% of the multiple enzymes/substrate mass ratio to soybean protein isolate by way of dissolving at 9% in water and incubating 3 h. at 40°C for pH7.5. The emulsifying capacity of hydrolyzing soybean protein with composite enzymes was increased up to 50.86% compared to the control sample.
 Number of references:  10
 Ei main heading:  Food additives
 Ei controlled terms:  Enzymes  -  Hydrolysis  -  Optimization  -  Proteins  -  pH
 Uncontrolled terms:  Soy protein isolate  -  Composite enzymes  -  Emulsifying properties  -  Optimal design
 Ei classification codes:  801.2 Biochemistry  -  802.2 Chemical Reactions  -  804.1 Organic Compounds  -  822.3 Food Products  -  921.5 Optimization Techniques
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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   8.  Accession number:  081911244833
 Title:  Detection algorithm for orientation lines based on pattern recognition
 Authors:  Zhang, Hongxia; Zhang, Tiezhong; Chen, Bingqi 
 Author affiliation:  China Agricultural University, Beijing 100083, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 107-111
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  An image algorithm to determine all the orientation lines of the targets in a crop image was proposed. The color image was converted into a gray image. The crops were separated from the backgrounds by Kmeans clustering. The orientation areas and orientation points were obtained by analyzing each horizon scan line in the binary image. The clustering function was defined according to the abscissa of orientation points on the two next horizon scan lines. The orientation lines were correctly detected by a passing a known point Hough transform. Test results showed that the algorithm was capable in accurately detecting different orientation lines. The algorithm required 0.12 s to determine all the orientation lines for a 640 × 480 pixel color image.
 Number of references:  10
 Ei main heading:  Crops
 Ei controlled terms:  Binary images  -  Hough transforms  -  Image processing  -  Pattern recognition
 Uncontrolled terms:  Precision agriculture  -  Localization  -  Clustering  -  Gray image
 Ei classification codes:  723.2 Data Processing and Image Processing  -  821.4 Agricultural Products  -  921.3 Mathematical Transformations
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 9.  Accession number:  081911244834
 Title:  Separate algorithm for overlapping spots in crop disease image
 Authors:  Zhang, Yancheng; Mao, Hanping; Hu, Bo; Li, Mingxi 
 Author affiliation:  Jiangsu University, Zhenjiang 212013, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 112-115
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  For accurately isolating the overlapping spots in crop disease images, an improved watershed algorithm named marker-reconstruction watershed algorithm was presented. Firstly, the binary spots image was transformed to distance image by multi-scale distance transform operator and makers (seed) were detected by using ultimate erosion. Then, geodesic SKIZ (i.e., watershed division lines) has been obtained by geodesic reconstruction operator constrained by marking seed image. Finally, the watershed division lines were subtracted from the original binary image. Applying the proposed method in cotton disease images, the experimental results indicated that the method could validly and effectively separate overlapping spots in the image, moreover, preferably protect the spots edge. This method is insensitive to noise and tiny outlier of the image.
 Number of references:  17
 Ei main heading:  Seed
 Ei controlled terms:  Binary images  -  Cotton  -  Image segmentation  -  Mathematical morphology  -  Mathematical operators  -  Watersheds
 Uncontrolled terms:  Ultimate erosion  -  Geodesic reconstruction operator  -  Watershed algorithm
 Ei classification codes:  444.1 Surface Water  -  723.2 Data Processing and Image Processing  -  821.4 Agricultural Products  -  921 Mathematics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  10.  Accession number:  081911244835
 Title:  Study on product innovative design based on TRIZ evolution theory
 Authors:  Zhang, Fuying; Zhang, Linjing; Wang, Ping 
 Author affiliation:  Tianjin University of Science and Technology, Tianjin 300222, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 116-119 166
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The uniform process model of product innovative design based on different views has been proposed, and TRIZ evolution theory for technical systems has been integrated into the stage for innovative ideas creation. In order to achieve rapid product innovative design, TRIZ evolution theory was used to identify the poor evolution lines, to predict the possible structure state of the future, and guide the designers to get innovative ideas along the right direction. A practical application of this work was also presented to illustrate its validity and operable.
 Number of references:  7
 Ei main heading:  Product design
 Ei controlled terms:  Bioelectric potentials  -  Evolutionary algorithms  -  Mathematical models
 Uncontrolled terms:  TRIZ evolution theory  -  Innovative design  -  Evolutional potential  -  Evolution lines
 Ei classification codes:  461.1 Biomedical Engineering  -  913.1 Production Engineering  -  921 Mathematics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  11.   Accession number:  081911244836
 Title:  Research on pf control for construction telerobot with force telepresence
 Authors:  Feng, Shizhu; Zhao, Dingxuan; Shang, Tao; Deng, Le 
 Author affiliation:  Jilin University, Changchun 130025, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 120-124
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Combining the feature of bilateral hydraulic servo control systems, based on the analysis of force telepresence techniques presently used in a construction robot system, a position-force architecture was formed by using a new controller which used a force sensor and a hydraulic motor controlled by an electro hydraulic servo valve to constitute a hydraulic force controller. This replaced the traditional pp architecture widely used in the construction robot system. The experimental results indicated that the new design improved the transparency of the teleoperation of construction telerobot system with force telepresence.
 Number of references:  12
 Ei main heading:  Robotic arms
 Ei controlled terms:  Hydraulic motors  -  Polypropylenes  -  Remote control  -  Transparency
 Uncontrolled terms:  Construction telerobot  -  Force telepresence  -  Hydraulic force controller  -  Position force architecture
 Ei classification codes:  632.2 Hydraulic Equipment and Machinery  -  731.5 Robotics  -  815.1.1 Organic Polymers
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  12.   Accession number:  081911244837
 Title:  Research on macro-micro dual-drive micro-locomotion platform based on micro-vision
 Authors:  Yu, Baojun; Yang, Zhigang; Qi, Huiliang; Cheng, Guangming 
 Author affiliation:  Jilin University, Changchun 130025, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 125-129 174
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  A macro-micro dual-drive ultra-precision positioning mechanism based on machine vision was presented. Combining macro with micro actuator, a system with large workspace and high resolution of motion was researched. The macro motion was driven by the motor, and PZT-drive micro stage with high frequency has been installed on the motor and compensated the position error. The micro-vision has been integrated into the closed-loop feedback, which was used to measure the position and motion the end-executive facility, was installed on the micro-platform. At the same time motion control method was adopted, which based on motion programming and motion estimation and it improved system motion speed. The experiment results showed that the travel stage was 80 mm, the repeatability positioning precision was 1 μm.
 Number of references:  4
 Ei main heading:  Microactuators
 Ei controlled terms:  Computer programming  -  Computer vision  -  Feedback  -  Mathematical programming  -  Motion control  -  Motion estimation
 Uncontrolled terms:  Macro micro dual drive  -  Precision positioning  -  Micro vision  -  Motion programming
 Ei classification codes:  716.1 Information Theory and Signal Processing  -  723.5 Computer Applications  -  731.2 Control System Applications
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  13.   Accession number:  081911244838
 Title:  Simulation study on key part of a novel valveless piezoelectric pump
 Authors:  Gao, Jianmin; Ren, Ning; Chen, Zhiwei 
 Author affiliation:  Jiangsu University, Zhenjiang 212013, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 130-133
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  A new type of valveless piezoelectric pump driven by Cymbal actuator was put forward. The working process of Cymbal actuator was simulated by FEM (finite element methods). Based on establishing the FEM model of Cymbal actuator, modal analysis was carried out to calculate modal frequency. The just working frequency was obtained by calculation. By transient dynamics analysis applying piezoelectric coupling theory, the transient dynamics properties have been discussed. The analysis result provided a design reference on this kind of valveless piezoelectric pumps that use Cymbal actuators.
 Number of references:  18
 Ei main heading:  Piezoelectric actuators
 Ei controlled terms:  Calculations  -  Finite element method  -  Modal analysis  -  Transients
 Uncontrolled terms:  Piezoelectric pump  -  Simulation  -  Cymbal actuator  -  Piezoelectric coupling theory
 Ei classification codes:  731.1 Control Systems  -  732 Control Devices  -  921 Mathematics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 14.  Accession number:  081911244839
 Title:  Study on multi-mode resource-constrained project scheduling problem based on particle swarm optimization
 Authors:  Liu, Mingzhou; Cheng, Xiaomei; Ge, Maogen; An, Suhua; Li, Hui 
 Author affiliation:  Hefei University of Technology, Hefei 230009, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 134-138
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  During the research of project scheduling problem, in order to achieve objective that included arranging the execution sequence of the activities and the execution mode reasonably, minimizing the project duration, an objective function of multi-objective scheduling was built and restriction conditions were defined. Then considering the specialty of this combinatorial optimization problem, the standard particle swarm optimization algorithm was improved, and a method presented the concepts of swap operator and swap sequence was designed for improving the optimizing speed and capacity of the algorithm. Finally the validity of such method has been proved with an example.
 Number of references:  5
 Ei main heading:  Scheduling
 Ei controlled terms:  Combinatorial optimization  -  Mathematical operators  -  Particle swarm optimization (PSO)
 Uncontrolled terms:  Resource constrained  -  Project scheduling  -  Multi mode  -  Combinatorial optimization problem
 Ei classification codes:  912.2 Management  -  921.5 Optimization Techniques
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  15.   Accession number:  081911244840
 Title:  Research on CNC based on smart mobile device
 Authors:  Gao, Rong; Wang, Zhisen; Dong, Bolin 
 Author affiliation:  Huaiyin Institute of Technology, Huainan 223001, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 139-143
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The conventional automatic and network-based manufacturing mode is not suitable for the changeable shop floor environment. The new type of advanced manufacture needs the system integration for shop floor. An innovative CNC system based on mobile device (Palm CNC) was presented. The network based on Palm CNC included five layers. The new CNC system was divided into two parts. One was an embedded machine (robots, AGV, etc.) controller, which was a web server; another was a mobile controller, which acted as a client. Both parts were communicated via bluetooth wireless technology. CNC network architecture and software were emphasized; relation and process of CNC and manufacturing environment were illustrated. The key implement technologies were investigated and tested, including Microsoft. NET based software developing, especially the programming based on Web services technology could realize cooperative manufacturing, system integration, real time control of Windows CE. NET-based CNC system,bluetooth communication technology, and etc.
 Number of references:  8
 Ei main heading:  Real time control
 Ei controlled terms:  Bluetooth  -  Network architecture  -  Servers  -  Web services
 Uncontrolled terms:  Cooperative manufacturing  -  System integration  -  Microsoft. NET  -  Windows CE. NET
 Ei classification codes:  716.3 Radio Systems and Equipment  -  731 Automatic Control Principles and Applications  -  902.2 Codes and Standards
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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 16.  Accession number:  081911244841
 Title:  Computer aided modularization design of CNC gear form grinding machine
 Authors:  Ren, Xiaozhong; Deng, Xiaozhong; Su, Jianxin; Li, Chunmei 
 Author affiliation:  Jiangsu University, Zhenjiang 212013, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 144-146
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The modularization design CAD system of CNC gear form grinding machine was developed by combining CAD with modularization technology. According to the design principles of modularization, the modules of gear form grinding machine were divided on the basis of function analysis. Taking UG software as the developing platform, the parametric 3-D modeling module bank and a database were set up. Under the guiding of the system interface, users could complete such tasks as module choice, module combination, and calculation etc. Therefore, computer aided modularization design of CNC gear form grinding machine could be realized.
 Number of references:  5
 Ei main heading:  Grinding machines
 Ei controlled terms:  Computer aided design  -  Database systems  -  Mathematical models
 Uncontrolled terms:  Gear form grinding machine  -  Modularization design  -  Three dimesion modeling
 Ei classification codes:  603.1 Machine Tools, General  -  723.5 Computer Applications  -  921 Mathematics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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  17.  Accession number:  081911244842
 Title:  Material removal mechanism for free abrasive polishing with flexible restraint
 Authors:  Zhang, Fu; Zhao, Ji 
 Author affiliation:  Jilin University, Changchun 130025, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 147-150
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The technique of free abrasive polishing with elastic restraint was proposed, and the work piece surface was polished by abrasive in suspending liquid with polishing tool as flexible restraint. The spherical tool machining area model reflecting the process influence factors, and the mechanical model of sphere and pyramid particles completely were established. The material removal mechanism was discussed and the feasibility of polishing free surface was analyzed subsequently. The experiments of polishing the optical glass use of two kinds of abrasive Al2O3 and SiC were carried out respectively. The validity of machining the ultra precise surface with flexible restraint abrasive was indicated, and the influence regulation of abrasive dimension was proved by the experimental results.
 Number of references:  11
 Ei main heading:  Polishing
 Ei controlled terms:  Abrasives  -  Mathematical models  -  Optical glass
 Uncontrolled terms:  Flexible restraint  -  Removal mechanism  -  Abrasive model  -  Polishing tool
 Ei classification codes:  604.2 Machining Operations  -  606.1 Abrasive Materials  -  741.3 Optical Devices and Systems  -  921 Mathematics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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  18.  Accession number:  081911244843
 Title:  Surface local fairing based on patch surface quality detection lines
 Authors:  Gao, Bin; Song, Xiaowen; Wang, Yun; Hu, Shugen; Yu, Xiaoli 
 Author affiliation:  Wenzhou Vocational and Technical College, Wenzhou 235035, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 151-154
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Reflection lines and highlight lines are effective tools in assessing the quality of a surface. An efficient NURBS surface local fairing method was presented based on quality detection lines (reflection lines or highlight lines) of the patch. First, the fair patch has been created in the local irregular area of the NURBS surface, and the part of original surface quality detection lines which has been in the patch area was replaced by the patch. The modified surface quality detection lines and the boundary conditions of original surface irregular area were utilized to build linear equations for surface local fairing. After the displacements of control points involved in the surface irregular area were computed, the displacements were smoothed according to the extent of the control points impact on the surface irregular area. Finally, the validity of this algorithm was verified by an example.
 Number of references:  7
 Ei main heading:  Computer aided design
 Ei controlled terms:  Boundary conditions  -  Linear equations
 Uncontrolled terms:  NURBS surface  -  Local fairing  -  Reflection lines  -  Highlight lines
 Ei classification codes:  723.5 Computer Applications  -  921 Mathematics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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  19.  Accession number:  081911244844
 Title:  Flexible cam curve expressed by NURBS and multiobjective optimization based on genetic algorithm
 Authors:  Ge, Rongyu; Li, Shiwei; Liu, Li 
 Author affiliation:  Shandong University, Jinan 250061, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 155-158
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  A method to express the flexible cam curve with continuous jerk by using quintic NURBS curve was presented. Then the cam curve could be optimized by adjusting knot vector, control points and weight factors of NURBS curve. The multiobjective optimization for a cam curve was described to satisfy both kinetic and dynamic requirements. To solve the optimization model for NURBS cam curve, a hybrid genetic algorithm combining elitism strategy, selection strategy based on goal attainment method and fast non-dominated sorting algorithm was proposed. The optimization example illustrated that the presented hybrid genetic algorithm could solve multiobjective optimization problem and achieve cam curve with good synthetic performances.
 Number of references:  4
 Ei main heading:  Computer aided manufacturing
 Ei controlled terms:  Genetic algorithms  -  Kinetics  -  Multiobjective optimization  -  Sorting
 Uncontrolled terms:  Cam curve  -  Goal attainment method  -  Quintic NURBS curve  -  Elitism strategy  -  Selection strategy
 Ei classification codes:  723.5 Computer Applications  -  921 Mathematics  -  931 Classical Physics; Quantum Theory; Relativity
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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  20.   Accession number:  081911244845
 Title:  Ultrasonic signal compression based on adaptive wavelet thresholding
 Authors:  Liu, Shoushan; Zhou, Xiaojun; Li, Ling; Yang, Chenlong 
 Author affiliation:  Shandong University of Science and Technology, Qingdao 266510, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 159-162
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Aimed at ultrasonic signal compression and detection of the flaw echo of aluminum alloy forge in the presence of high scattering microstructure noise, the adaptive stein unbiased risk estimation (SURE) compression method based on the new thresholding function was presented, and the flaw model under ultrasonic signal has been built. The new estimated wavelet coefficients were deduced by using the new thresholding function, as the original wavelet coefficients decomposed from signal inputted. The new estimated signal was rebuilt by using the new estimated wavelet coefficients. An iterative process of the thresholds, which depend on the minimum mean square error (MMSE), was implemented to decide the termination of signal rebuilt. The experiment results indicated that the adaptive compression method has better de-noising and compressing performance and improved the SNR ability for flaw echo detection.
 Number of references:  11
 Ei main heading:  Aluminum alloys
 Ei controlled terms:  Adaptive algorithms  -  Mean square error  -  Microstructure  -  Ultrasonics
 Uncontrolled terms:  Ultrasonic signal  -  Compression  -  Wavelet  -  Stein unbiased risk estimation (SURE)  -  Minimum mean square error (MMSE)
 Ei classification codes:  541.2 Aluminum Alloys  -  753.1 Ultrasonic Waves  -  921 Mathematics  -  922.2 Mathematical Statistics  -  951 Materials Science
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  21.  Accession number:  081911244846
 Title:  Laser measurement and errors compensation of position accuracy for parallel axis on hybrid NC machine tools
 Authors:  Zhang, Lixin; Huang, Yumei; Qiao, Yanlong 
 Author affiliation:  Xi'an University of Technology, Xi'an 710048, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 163-166
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Based on the detailed studying on the principles and methods of laser interferometry for setting accuracy of parallel axis on hybrid NC machine tools, the setting accuracy and resetting accuracy of parallel axis in Z direction has been inspected by interferometry and the characteristic curve of mean position deviation for parallel axis was plotted, by which the mathematical model of positional error for parallel axis in linear displacement was derived. The positional errors compensation model and increment compensation curve of parallel axis have been obtained by making use of least squares fitting. The position of parallel apparatus moving platform and length of the drive rods have been solved. The setting accuracy of parallel axis on hybrid NC machine tools was compensated. The methods of laser interferometry of setting accuracy and model building of error compensation for parallel axis were proposed.
 Number of references:  3
 Ei main heading:  Machine tools
 Ei controlled terms:  Error compensation  -  Laser interferometry  -  Mathematical models
 Uncontrolled terms:  Hybrid NC machine tools  -  Parallel axis  -  Accuracy  -  Laser measurement
 Ei classification codes:  603.1 Machine Tools, General  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  741.3 Optical Devices and Systems  -  921 Mathematics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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 22.  Accession number:  081911244847
 Title:  Simulation on stress intensity factor of circumference surface crack in the axis under pulling force and torque
 Authors:  Li, Cheng; Chang, Xiangqian; Zheng, Yanping 
 Author affiliation:  Zhengzhou University, Zhengzhou 450001, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 167-169 124
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  A computation model for the circumference surface cracks in the axis was founded based on the flexible fracture mechanics and complex function theory. According to the method based upon the surface cracks stress intensity factors, simulations were made by the influences of various crack length, load types, and axis's diameters respectively. Stress intensity factors were able to achieve in various circumstance. Cracks stress intensity factors were given by different crack depths. And stress intensity factor of the axis under pulling force or torque was analyzed for the comparison.
 Number of references:  7
 Ei main heading:  Fracture mechanics
 Ei controlled terms:  Cracks  -  Stress intensity factors  -  Torque
 Uncontrolled terms:  Axis under pulling force torque  -  Circumference surface crack  -  Simulation
 Ei classification codes:  421 Strength of Building Materials; Mechanical Properties  -  931.1 Mechanics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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 23.  Accession number:  081911244848
 Title:  Parameter design rules of differential grating displacement sensor
 Authors:  Tan, Weimin 
 Author affiliation:  Southwest University, Chongqing 400715, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 170-174
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The performance of differential grating displacement sensor is determined by its mechanism parameters. And the mechanism parameter choice follows specific rules in the process of its design. A set of parameter design rules of differential grating displacement sensor was summarized based on systematic mathematical calculation. It included resolution rule, precision rule, amplitude rule, and waveform rule. These rules could undoubtedly help to optimize resolution, precision, amplitude and waveform of this kind of sensor, and could further help to avoid aimless sensor design and those design consequence of bad waveform, poor amplitude, or even no signal output. And this research method could be used as the references by other sensor design.
 Number of references:  3
 Ei main heading:  Product design
 Ei controlled terms:  Diffraction gratings  -  Mechanisms  -  Optical sensors
 Uncontrolled terms:  Displacement sensor  -  Differential grating  -  Mechanism parameter  -  Design rule
 Ei classification codes:  601.3 Mechanisms  -  732.2 Control Instrumentation  -  741.3 Optical Devices and Systems  -  913.1 Production Engineering
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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 24.   Accession number:  081911244849
 Title:  Research on microorganism Xylanases and their application in food industry
 Authors:  Li, Xiuting 
 Author affiliation:  Beijing Technology and Business University, Beijing 100037, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 175-179
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Xylan is the major constituent of hemicellulose. Due to the structural heterogeneity of the xylans, xylan-degrading enzyme systems include several hydrolytic enzymes. Xylanase (EC 3.2.1.8, 1, 4-β Dxylanase) can hydrolyze β-1, 4glycosidic linkages of the xylan backbone to produce short chain xylooligosacchrides of various lengths. Hence, endo-β-xylanase is the crucial enzyme component of microbial xylanolytic enzyme systems. A large number of bacteria and fungi are known to produce xylanases. Xylanases from microorganisms have attracted a great deal of attention in recent years because of their biotechnological potential application in various industrial processes such as food and feed industries. An important factor for efficient xylanase production is the choice of an appropriate inducing substrate, as well as optimization of the medium composition. Properties of xylanases are different due to various microorganisms. The highlights complex xylan structure, microbial xylanolytic enzymes including their production, properties and their application in industries was reviewed.
 Number of references:  30
 Ei main heading:  Food additives
 Ei controlled terms:  Bacteria  -  Bioelectric potentials  -  Enzymes  -  Fungi  -  Microorganisms
 Uncontrolled terms:  Xylan  -  Xylanases  -  Properties  -  Xylan degrading enzyme systems  -  Microbial xylanolytic enzymes
 Ei classification codes:  461.9 Biology  -  822.3 Food Products
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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  25.   Accession number:  081911244808
 Title:  Experimental study on non-thermal plasma aftertreatment of particulates matter in diesel engine exhaust
 Authors:  Cai, Yixi; Zhao, Weidong; Li, Xiaohua; Wu, Jiangxia; Wang, Jun; Liu, Zhinan 
 Author affiliation:  Jiangsu University, Zhenjiang 212013, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 1-5 10
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Using non-thermal plasma devices and reactor based on dielectric barrier discharge principles, simulation experiment and bench test were carried out. Experimental result indicated that non-thermal plasma produced by dielectric barrier discharge could decompose particulate matter in diesel exhaust effectively, and correlative chemical reaction mainly took place in the channels of micro discharge, decomposition rate of particulate matter increased with the energy density. The non-thermal plasma reactor could transform NO in the exhaust to NO2, but could not reduce the total amount of nitric oxides. Decomposition and conversion rate of HC and NO in diesel exhaust when treated with non-thermal plasma descend along with the quantity of particulate matter in the exhaust.
 Number of references:  11
 Ei main heading:  Ventilation exhausts
 Ei controlled terms:  Dielectric materials  -  Diesel engines  -  Electric discharges  -  Exhaust systems (engine)  -  Particulate emissions
 Uncontrolled terms:  Particulate matter  -  Emission  -  Non thermal plasma
 Ei classification codes:  451.1 Air Pollution Sources  -  612.2 Diesel Engines  -  701.1 Electricity: Basic Concepts and Phenomena  -  708.1 Dielectric Materials
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 26.  Accession number:  081911244809
 Title:  Studies and simulation on influence of cylinder liner distortion on particulate matter emission in diesel engine
 Authors:  Liu, Jie; Fu, Guangqi; Xu, Yuliang; Sun, Jilong; Dai, Maofang 
 Author affiliation:  Tianjin University, Tianjin 300072, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 6-10
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The machine oil enter the combustion chamber and combust caused by cylinder liner non-uniform distortion is an important factor which makes the diesel engine PM worsen. The 493-diesel was taken as an object to study. It was found in the study that the temperature around cylinder liners has been improved by the configure optimum of water jacket in order to reduce the cylinder liner distortion and PM emission. And validity of reducing PM by uniform the cylinder liner distortion has been verified. The test results proved that this method could reduce PM emission in-cylinder when the PM emission could not be reduced by using other in-cylinder cleaning ways.
 Number of references:  10
 Ei main heading:  Diesel engines
 Ei controlled terms:  Combustion chambers  -  Industrial emissions  -  Particulate emissions  -  Temperature
 Uncontrolled terms:  Particulate matter  -  Emission  -  Cylinder liner distortion  -  Non uniform distortion
 Ei classification codes:  451.1 Air Pollution Sources  -  612.2 Diesel Engines  -  641.1 Thermodynamics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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  27.  Accession number:  081911244810
 Title:  Influence of release valve working parameters on braking performance of engine retarder
 Authors:  Dong, Ying; He, Ren; Luo, Fuqiang 
 Author affiliation:  Zhejiang Normal University, Jinhua 321019, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 11-14
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The working procession of engine retarder was discussed. With a diesel engine as an example, the mathematical model of compression release engine retarder was created. The influence of release valve working parameters on the braking performance was analyzed by the method of numerical simulation. The simulation results showed that there was a crank angle before the top dead center to one engine speed specified to get the maximum brake power, this angle was bigger when the engine speed was higher; and the higher release valve lift or the faster release valve velocity was, the more brake power could be gotten.
 Number of references:  11
 Ei main heading:  Diesel engines
 Ei controlled terms:  Braking  -  Computer simulation  -  Mathematical models  -  Velocity
 Uncontrolled terms:  Engine retarder  -  Working procession  -  Working parameter  -  Numerical simulation
 Ei classification codes:  602 Mechanical Drives and Transmissions  -  612.2 Diesel Engines  -  723.5 Computer Applications  -  921 Mathematics  -  931.1 Mechanics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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  28.  Accession number:  081911244811
 Title:  Design of solenoid driving circuit module for electrically controlled diesel engine based on circuit simulation
 Authors:  Xu, Quankui; Zhu, Keqing; Chen, Ziqiang; Yang, Lin 
 Author affiliation:  Shanghai Jiaotong University, Shanghai 200030, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 15-19
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  A precise PSPICE model for the driving circuit of solenoid valve for electrically controlled diesel engine was created. Based on abundant analyses of the simulation results on the condition of different parameters, a driving circuit module of solenoid valve was designed. By applying the methods of high and low side driving, high and low driving voltage, and the feedback control of driving current, this module could fully realize the requirements for solenoid valve. At the same time, the fault detecting and diagnosing circuit for solenoid valve was designed. A self-protecting circuit for ECU at the time of solenoid valve winding circuit short was also realized. The tests showed that the ECU for EUP (electronic unit pump) diesel engine and high pressure common rail diesel engine, which applied this module, could achieve the current driving requirement of solenoid valve.
 Number of references:  7
 Ei main heading:  Diesel engines
 Ei controlled terms:  Circuit simulation  -  Electric potential  -  Electric windings  -  Feedback control  -  SPICE  -  Solenoids
 Uncontrolled terms:  Electrically controlled diesel engine  -  Solenoid valve  -  Driving circuit  -  Simulation
 Ei classification codes:  612.2 Diesel Engines  -  701.1 Electricity: Basic Concepts and Phenomena  -  703.1.1 Electric Network Analysis  -  723.5 Computer Applications  -  731.1 Control Systems
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
   Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved
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  29.  Accession number:  081911244812
 Title:  Road recognition and tracking control of an vision guided AGV
 Authors:  Li, Jin; Chen, Wuwei; Li, Bichun; Wang, Tanbin 
 Author affiliation:  Hefei University of Technology, Hefei 230009, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 20-24
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The vision-guided AGV acquires images of road through machine vision and the navigation parameters are gotten by processing these images. In order to recognize the road robustly and quickly, some image-processing methods such as filtering, image segmenting were presented. Additionally, some measures were taken to keep the recognition in real time. A PID controller has been designed to control the motors in order to achieve the line-tracking according to the parameters. The simulation and experimental results showed that the road could be recognized even under certain disturbances and the AGV could track the road accurately and reliably.
 Number of references:  10
 Ei main heading:  Vehicle locating systems
 Ei controlled terms:  Automatic guidance (agricultural machinery)  -  Computer vision  -  Image processing  -  Navigation  -  Three term control systems
 Uncontrolled terms:  Automatic guided vehicle  -  Visual navigation  -  PID control  -  Road tracking
 Ei classification codes:  406 Highway Engineering  -  431.5 Air Navigation and Traffic Control  -  723.5 Computer Applications  -  731.1 Control Systems
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  30.  Accession number:  081911244813
 Title:  Research on excitation of SR motor on electric vehicle
 Authors:  Xue, Yuchun; Zhang, Yimin; He, Xiangdong 
 Author affiliation:  Northeast Dianli University, Jilin 132012, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 25-29 19
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  New type of switched reluctance motor was applied to electric vehicle. Considering the electromotor as vibration source, stimulation of electromotor was analyzed in particular orientation. Expressions of radial force and torque variance were obtained by analytical method. During the course of system analysis of electric vehicle and SR electromotor, both radial force of SR electromotor and torque variance were considered. It was concluded that there are direct relationships between amplitude and initial phase in vertical orientation by numerical analysis. There are maximum and minimum of amplitude, and the way to ensure them was proposed. New reliable foundation was put forward to solve vibration problems of design and control of SR electromotor.
 Number of references:  12
 Ei main heading:  Electric vehicles
 Ei controlled terms:  Numerical analysis  -  Reluctance motors  -  Systems analysis  -  Vibrations (mechanical)
 Uncontrolled terms:  Switched reluctance motor  -  Exciting vibration force  -  SR electromotor  -  Particular orientation
 Ei classification codes:  702.1.2 Secondary Batteries  -  705.3.1 AC Motors  -  921.6 Numerical Methods  -  931.1 Mechanics  -  961 Systems Science
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 31.  Accession number:  081911244814
 Title:  Research on full state feedback control strategy of steer-by-wire
 Authors:  Shi, Guobiao; Yu, Leiyan; Lin, Yi 
 Author affiliation:  Beijing Institute of Technology, Beijing 100081, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 30-32 46
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Full states (i.e. slip angle and yaw rate) feedback control strategy was researched and feedback coefficients of slip angle and yaw rate were acquired according to the concepts of virtual front tire cornering stiffness coefficient. Slip angle was estimated with Kalman filter. Effects of virtual front tire cornering stiffness coefficient changing coefficient on poles and frequency characteristics have been researched. Simulations showed that virtual front tire cornering stiffness coefficient changing coefficients could be chosen based on velocities to change steering characteristics: positive coefficient at low velocities leading to oversteer and steering agile; while negative coefficient at high velocities leading to understeer and steering stable. So presented control strategy improved handling and stabilities.
 Number of references:  8
 Ei main heading:  Steering
 Ei controlled terms:  Feedback control  -  Kalman filters  -  State feedback  -  Stiffness
 Uncontrolled terms:  Steer by wire  -  Full state feedback  -  Control strategy  -  Steering characteristics
 Ei classification codes:  662.4 Automobile and Smaller Vehicle Components  -  731.1 Control Systems  -  951 Materials Science
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 32.  Accession number:  081911244815
 Title:  Study on vehicle braking stability control based on active steering technique
 Authors:  Zhao, Wei; Wei, Lang; Zhou, Zhili; Zhang, Wei 
 Author affiliation:  Chang'an University, Xi'an 710064, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 33-37 14
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  According to the theory of vehicle braking stability control and the related dynamic vehicle model, the theoretical analysis of vehicle braking condition on bisectional roads with large difference between road adhesion coefficients of two sides of the road was made. From the analysis result, by means of active steering technique to control vehicle stability when braking in emergency and restoring vehicle to correct lane quickly after braking deflection driven by the way of steering control, the ideas were put forward. Based on the theoretical analysis and combined with fuzzy control strategy and method, fuzzy controller has been devised to carry out simulation experiment. The result showed that vehicle braking stability fuzzy control strategy suggested could reduce vehicle yaw angular velocity and lateral acceleration when braking, restore vehicle to correct lane quickly after braking deflection drive, and the research is of significance to improve vehicle driving safety.
 Number of references:  9
 Ei main heading:  Automobile steering equipment
 Ei controlled terms:  Angular velocity  -  Braking  -  Fuzzy control  -  Vehicles
 Uncontrolled terms:  Bisectional road  -  Braking stability  -  Active steering
 Ei classification codes:  432 Highway Transportation  -  602 Mechanical Drives and Transmissions  -  662.4 Automobile and Smaller Vehicle Components  -  921 Mathematics  -  931.1 Mechanics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 33.  Accession number:  081911244816
 Title:  Research on shift quality of automatic transmission
 Authors:  Wang, Juan; Chen, Huiyan; Tao, Gang; Gong, Peng 
 Author affiliation:  Beijing Institute of Technology, Beijing 100081, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 38-42
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The simple dynamic model of the shift process of automatic transmission was built. The torque phase and the inertial phase of the shift process were analyzed with the model. In the torque phase, the accurate timing to switch from release clutch to the apply clutch has been controlled, which reduced the disturbance and avoided the interrupt of the torque. In the inertial phase, the pressure increasing on the apply clutch has been controlled smoothly through the real time-closed loop modulation of pulse-width modulated valve, which improved the shift quality of the automatic transmission. The recorded test data was analyzed, and the theory of shift quality improving has been proved rightly and practically.
 Number of references:  5
 Ei main heading:  Automobile transmissions
 Ei controlled terms:  Dynamic models  -  Pulse width modulation  -  Torque control
 Uncontrolled terms:  Automatic transmission  -  Shift quality  -  Real time closed loop modulation  -  Inertial phase
 Ei classification codes:  661.2 Automotive Engine Components  -  716 Telecommunication; Radar, Radio and Television  -  731.3 Specific Variables Control  -  921 Mathematics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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34.  Accession number:  081911244817
 Title:  Statistical distribution model of complicated random variables based on maximum entropy concept
 Authors:  Gao, Xiang; Zheng, Jianxiang 
 Author affiliation:  Jiangsu University, Zhenjiang 212013, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 43-46
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The statistical distribution of random variables is absolutely necessary in many engineering practices, such as reliability analysis, fatigue life test. When building a statistical model, in general, a hypothesis was proposed based on statistical data of samples and experience of the engineer, who took the responsibility. Therefore the hypothesis of the statistical model would be influenced by the opinion of the engineer. Based on maximum entropy concept, statistical model of complicated random variables was presented, and a parameter estimation method of the distribution function was also proposed. Maximum entropy statistical models were used to describe service loads of engine and clutch of a light truck, and rotating speed. The result showed that this model is feasible and valid.
 Number of references:  5
 Ei main heading:  Random variables
 Ei controlled terms:  Distribution functions  -  Mathematical models  -  Parameter estimation  -  Reliability analysis
 Uncontrolled terms:  Maximum entropy  -  Statistial model  -  Rotating speed  -  Fatigue life test
 Ei classification codes:  422.2 Test Methods  -  731.1 Control Systems  -  921 Mathematics  -  922.1 Probability Theory
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 35.  Accession number:  081911244818
 Title:  Parameters optimization based on human-computer conversation of transplanting mechanism with planetary spur gears and elliptical gears
 Authors:  Yu, Gaohong; Sun, Liang; Zhao, Yun 
 Author affiliation:  Zhejiang Sci.-Technol. University, Hangzhou 310018, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 47-50
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Working principles and structural feature of the transplanting mechanism with planetary spur gears and elliptical gears were analyzed, and its kinematics models were established. Parameters optimization software based on human-computer conversation was programmed by programming language of Visual Basic 6.0. Based on the parameters software, kinematics property was analyzed and simulated, and the analysis found out that various structural parameters would affect kinematics locus and optimization objectives of the transplanting mechanism. Then structural parameters of the transplanting mechanism were gained, which could meet the demands of transplanting seedlings. They were a=21.448 mm, k=0.958, α0=-36°, δ0=67°, ψ0=20°, S=155 mm, R=20 mm.
 Number of references:  9
 Ei main heading:  Agricultural implements
 Ei controlled terms:  BASIC (programming language)  -  Computer programming languages  -  Formal languages  -  Kinematics  -  Optimization  -  Query languages  -  Spur gears
 Uncontrolled terms:  Rice transplanter  -  Transplanting mechanism  -  Elliptical gears transmission  -  Visual Basic 6.0.
 Ei classification codes:  601.2 Machine Components  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723.1.1 Computer Programming Languages  -  821.1 Agricultural Machinery and Equipment  -  921.5 Optimization Techniques  -  931.1 Mechanics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  36.  Accession number:  081911244819
 Title:  Design and experiment on 2BFML5 no-till planter for permanent raised bed
 Authors:  Zhu, Guohui; Li, Wenying; He, Jin 
 Author affiliation:  China Agricultural University, Beijing 100083, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 51-54 76
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  According to the problem of lacking suitable planter for permanent raised bed (PRB) in one crop a year oasis agricultural region of northwest China, a 2BFML5 no-till planter for PRB was designed, the parameters of key components for opener, reshaping plough etc. were analyzed and decided. By means of adopting sharp-angle opener, the new planter could cut stubble and break clod, what was more, 5 cm of vertical depth difference between seeder and fertilizer could be achieved easily. The reshaping plough could not only cover seeder row effectively, but also reshape the old bed perfectly. The planter could finish stubble cutting, ditching and fertilizing, seeding, covering, compacting and reshaping bed in one pass. Experimental results showed that under straw cover of 3682 kg/hm2, the planter, which was effective in entering the soil, anti-blocking and increasing emergence rate by 6.25% and yield by 2.7% respectively, could meet the developing requirement of PRB in northwest China.
 Number of references:  7
 Ei main heading:  Agricultural implements
 Ei controlled terms:  Fertilizers  -  Roof coverings  -  Straw
 Uncontrolled terms:  No till planter  -  Permanent raised bed  -  Renovation plough  -  Sharp angled opener
 Ei classification codes:  402 Buildings and Towers  -  804 Chemical Products Generally  -  821.1 Agricultural Machinery and Equipment
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 37.  Accession number:  081911244820
 Title:  Analysis of droplets deposition parameters based on micrograph in airtight space
 Authors:  Qiu, Baijing; Sha, Junyan; Tang, Bomin; Wu, Hao; Li, Zuopeng 
 Author affiliation:  Jiangsu University, Zhenjiang 212013, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 55-58 111
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  In order to solve the problems of sampling technology in spraying, a new measurement method of using micrograph combining with digital image processing technology for spraying deposition parameters analysis and sample in airtight space was given. With this method, the parameters of spraying deposition in entire spraying field could be analyzed, such as spraying coverage, droplets density, spraying uniformity and etc. During the experiment, it was found that with the increasing distance, droplet spraying coverage rose firstly and then declined, but the droplets density was of the opposite trend. The spraying coverage and droplets density would not change at the height of 0.4-0.8 m on the ground. It is feasible to describe the droplets deposition in the spraying field by using the spraying coverage, droplets density and spraying uniformity.
 Number of references:  12
 Ei main heading:  Agricultural implements
 Ei controlled terms:  Aerosols  -  Drops  -  Image processing  -  Sampling  -  Spraying
 Uncontrolled terms:  Aerosol sprayer  -  Spraying coverage  -  Droplets density  -  Micrograph
 Ei classification codes:  723.2 Data Processing and Image Processing  -  801.3 Colloid Chemistry  -  813.1 Coating Techniques  -  821.1 Agricultural Machinery and Equipment  -  922.1 Probability Theory
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 38.  Accession number:  081911244821
 Title:  Kinematical analysis of virbrating screen on a kind of 2T-2R parallel mechanism
 Authors:  Liu, Jianmin; Ma, Luzhong; Xu, Zihong; Zhong, Donghua; Feng, Shijia 
 Author affiliation:  Jiangsu University, Zhenjiang 212013, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 59-62
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  An idea of spatial vibrating screen was presented to meet the different needs in screening crops,and its main body has been designed. A kind of four degrees-of-freedom parallel mechanism has been used by the screen as the main body. It could adjust the amplitude and the vibration direction of the vibrating screen conveniently. This parallel mechanism included four legs,where two legs were types of R-R-P, the others were R-R-R-R-P. The moving platform of this mechanism,used as a screen platform,could achieve a movement in two durations and a rotation around two directional axes. The kinematics modeling method of this mechanism was studied by using conversion matrix, and the kinematics positive and inverse solutions of this mechanism were presented. The result indicated that this mechanism could be applied in the vibrating screen.
 Number of references:  7
 Ei main heading:  Vibrating screens
 Ei controlled terms:  Crops  -  Kinematics  -  Mechanisms  -  Screening
 Uncontrolled terms:  Virbrating screen  -  Parallel mechanism  -  Kinematical analysis  -  Conversion matrix
 Ei classification codes:  601.3 Mechanisms  -  605.1 Small Tools, Powered  -  821.4 Agricultural Products  -  931.1 Mechanics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  39.  Accession number:  081911244822
 Title:  Design and experimental study on vane-type pulsating flow generator
 Authors:  Li, Hua; Zhang, Xuemei; Xu, Zhang; Zhong, Yingjie; Deng, Kai; Ren, Jianli 
 Author affiliation:  Zhejiang University of Technology, Hangzhou 310014, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 63-66
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  A device for producing pulsating flow named vane-type pulsation generator was designed and experimentally studied. The experimental results demonstrated that pulsation generator, which produced pulsation effects on steady flow could obtain pulsating flow by means of on-and-off periodical flow interrupter. The pulsation effects for this type of pulsating flow generator had little reduction and could transfer along the channel. Pulsation amplitude changing with pulsation frequency was observed. It could impact on the flow velocity to induce pulsation generator to the experimental system. The relationship between pulsation frequency and flow velocity was non-linear.
 Number of references:  8
 Ei main heading:  Steady flow
 Ei controlled terms:  Flow velocity  -  Pressure
 Uncontrolled terms:  Pulsation generator  -  Pulsating flow  -  Pressure characteristic  -  Experimental system
 Ei classification codes:  631 Fluid Flow  -  931.1 Mechanics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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 40.  Accession number:  081911244823
 Title:  Numerical simulation of unsteady interaction of francis runner with guide vanes
 Authors:  Yang, Changming; Xu, Lili; Chen, Cichang 
 Author affiliation:  Xihua University, Chengdu 610039, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 67-69 88
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  In order to study three-dimensional unsteady flow inside HL240 rotor under design condition, sliding mesh was applied to investigate rotor/stator interaction influence. Coupled flow through guide vane, runner, and draft tube was simulated by using Fluent software, NS equations, standard k-ε turbulence model and SIMPLEC method. Computational result agreed well with practice. The pressure fluctuation near the runner blade surface, periodic pressure variation inside flow passage, and back-flow in draft tube were revealed through unsteady flow analysis.
 Number of references:  5
 Ei main heading:  Turbulence models
 Ei controlled terms:  Computer simulation  -  Flow interactions  -  Rotors (windings)  -  Three dimensional  -  Unsteady flow
 Uncontrolled terms:  Francis rotor  -  Unsteady  -  Rotor stator interaction  -  Numerical simulation
 Ei classification codes:  631.1 Fluid Flow, General  -  704.1 Electric Components  -  723.5 Computer Applications
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  41.  Accession number:  081911244824
 Title:  Compared experiments between complete fluidic sprinkler and impact sprinkler
 Authors:  Zhu, Xingye; Yuan, Shouqi; Li, Hong 
 Author affiliation:  Jiangsu University, Zhenjiang 212013, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 70-72 184
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  The calculated equations of complete fluidic sprinkler and impact sprinkler were submitted. Their parameters were contrasted by experiments. The experimental results demonstrated that the angle and frequency of complete fluidic sprinkler was mainly depended on the pipe length. The more lengthen of the pipe was,the bigger angle and the lower frequency would be and the smaller the angle and frequency of impact sprinkler range would be. So the complete fluidic sprinkler is more superiority. At the same time the relationship of pipe length and angle of step-by-step operation was brought forward. Empirical equations of pressure difference and pipe length and working pressure were put forward for the first time.
 Number of references:  15
 Ei main heading:  Sprinkler systems (irrigation)
 Ei controlled terms:  Fluidics  -  Pressure  -  Step response
 Uncontrolled terms:  Complete fluidic sprinkler  -  Impact sprinkler  -  Driving moment of force  -  Angle of step by step operation  -  Frequency of step by step operation
 Ei classification codes:  731.1 Control Systems  -  732.1 Control Equipment  -  821.1 Agricultural Machinery and Equipment  -  931.1 Mechanics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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  42.  Accession number:  081911244825
 Title:  Research on the guide vane design of high specific speed mixed-flow pump
 Authors:  Zhang, Qinzhao; Cao, Shuliang; Lu, Li 
 Author affiliation:  Tsinghua University, Beijing 100084, China
 Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
 Abbreviated serial title:  Nongye Jixie Xuebao
 Volume:  v 39
 Issue:  n 2
 Issue date:  February 2008
 Publication year:  2008
 Pages:  p 73-76
 Language:  Chinese
 ISSN:  1000-1298
 CODEN:  NUYCA3
 Document type:  Journal article (JA)
 Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China
 Abstract:  Based on the inverse design theory of pump impeller, a computer code was made in Fortran language to design the guide vane of high specific speed mixed-flow pump, with streamline iteration method to calculate the meridional velocity distribution, point-by-point integration method to draw the vane shape, conformal mapping method to thicken the vane and smooth the leading edge and trailing edge of the vane. In addition, the effects of the vane angle distribution and the position of vane outlet edge on the designed vane shape were discussed. This computer code could obviously increase the efficiency of design work and the accuracy of calculating results. And the data of the vane surface was complete, which is convenient for vane manufacturing by numerical control machine.
 Number of references:  6
 Ei main heading:  Turbine pumps
 Ei controlled terms:  Conformal mapping  -  Formal languages  -  Hydraulics  -  Inverse problems  -  Query languages  -  Velocity distribution
 Uncontrolled terms:  Mixed flow pump  -  Guide vane  -  Hydraulic design
 Ei classification codes:  618.2 Pumps  -  632.1 Hydraulics  -  723.1.1 Computer Programming Languages  -  921 Mathematics  -  922.2 Mathematical Statistics
 Treatment:  Applications (APP); Experimental (EXP)
 Database:  Compendex
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