|
2010年第41卷增刊共收录59篇
1. Accession number: 20104313335002
Title: Method and experiment of spontaneous acoustic frequency measurement on cucumber
Authors: Qi, Lirong1 ; Teng, Guanghui1, 2 ; Hou, Tianzhen2 ; Dai, Hang1
Author affiliation: 1 College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
2 Key Lab. of the Ministry of Agriculture for Agricultural Engineering in Structure and Environment, Beijing 100083, China
Corresponding author: Teng, G. (futong@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 263-267
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: Acoustic frequency technology can promote the growth of plants in horticulture, but the promotion mechanism is not clear. Therefore, the method of spontaneous acoustic frequency (SAF) measurement was explored, and the spontaneous spectrum of cucumber seedlings was examined. Using a laser PDV-100 vibrometer, the SAF of cucumber seedlings in different locations (main vein, mesophyll and stem) and different environments (light intensity changes and drought stress) was measured in a semi-anechoic room by non-contact measurement. The power spectrum and autocorrelation of SAF were analyzed and the spontaneous spectral characteristics of cucumber seedlings were obtained. The results showed that the basic frequency of cucumber seedlings' SAF was in 4.98~5.86 Hz and the spontaneous acoustic signal variations under different environments in the three parts of the cucumber were consistent.
Number of references: 12
Main heading: Spectrum analysis
Controlled terms: Agriculture - Interferometry - Power spectrum - Seed - Spectrum analyzers
Uncontrolled terms: Acoustic frequency - Acoustic frequency technology - Acoustic signals - Anechoic rooms - Cucumber - Drought stress - Horticulture - Light intensity - Noncontact measurements - Spectral characteristics - Spontaneous acoustic frequency - Vibrometers
Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.4 Optical Variables Measurements - 941 Acoustical and Optical Measuring Instruments - 921 Mathematics - 821.4 Agricultural Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 711 Electromagnetic Waves
DOI: 10.3969/j.issn.1000-1298.2010.Supp.057
Database: Compendex 2. Accession number: 20104313334987
Title: Flocculation experiment on potato starch wastewater
Authors: Xie, An1 ; Li, Shujun1 ; Lin, Yaling1 ; Yang, Bingnan1 ; Yang, Yanchen1 ; Duan, Junzhao1
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Lin, Y. (linyaling@caams.org.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 195-197
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Polymerization aluminum chloride (PAC) and cationic polyacrylamide(CPAM) were used to treat potato starch wastewater. The cleaning efficiency of the chemical oxygen demand (COD) in the wastewater was also studied by changing the experimental conditions. In the orthogonal test, the optimal conditions were as follows: PAC addition 0.2%, CPAM addition 0.1%, and reaction pH value 9.0. The removal rate of COD was 56.24%.
Number of references: 8
Main heading: Starch
Controlled terms: Aluminum - Cationic polymerization - Chemical cleaning - Chemical oxygen demand - Chlorine compounds - Flocculation - Oxygen - Polymers - Wastewater - Wastewater treatment
Uncontrolled terms: Aluminum chlorides - Cationic polyacrylamides - Cleaning efficiency - Experimental conditions - Optimal conditions - Orthogonal test - pH value - Potato starches - Removal rate
Classification code: 452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 541.1 Aluminum - 802.3 Chemical Operations - 804 Chemical Products Generally - 815 Polymers and Polymer Science
DOI: 10.3969/j.issn.1000-1298.2010.Supp.042
Database: Compendex 3. Accession number: 20104313334976
Title: Study on isolation of cellulose-decomposing microorganisms and its cellulase-producing conditions
Authors: Sun, Qing1 ; Yi, Weiming2 ; Gu, Shiyan1 ; Zhang, Chunmei1 ; Ge, Jingfeng1 ; Liu, Qingyu1
Author affiliation: 1 Engineering College, Shenyang Agricultural University, Shenyang 110161, China
2 Shandong Research Center of Engineering and Technology for Clean Energy, Shandong University of Technology, Zibo 255049, China
Corresponding author: Yi, W. (yiweiming@sdut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 141-144
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: According to the theory of microbial ecology, with sweet sorghum straw as the raw material, cellulose-decomposing fungi, which had high enzyme activity, were isolated from their natural habitat and screened. Meanwhile, the production conditions of cellulose enzyme were optimized based on the factors of temperature, initial pH value, and inoculation quantity, and the influence of these factors on enzyme activity was discussed. Taking Z15 as a test strain, optimization of production capacity of crude enzyme test was carried out, according to three factors, five-level orthogonal rotational regression test design, to investigate the effects on fermentation temperature, initial pH value and inoculation quantity. The yield of reducing sugar was taken as the indicators, and the impact on the target size about the three factors was analyzed. By calculating the analysis, the following results of the impact on the target was obtained: temperature was the first one, inoculation quantity was the last one and initial pH value was the middle. The optimum conditions for enzymatic hydrolysis were obtained: optimum temperature was 26.64°C, optimum initial pH value was 4.96, and optimum inoculation quantity was 5%, at this time reducing sugar content was 54.19 mg/g.
Number of references: 5
Main heading: pH effects
Controlled terms: Cellulose - Ecology - Enzymatic hydrolysis - Enzyme activity - Enzymes - Microorganisms - Optimization - Sugar (sucrose)
Uncontrolled terms: Crude enzymes - Fermentation temperature - Initial pH value - Microbial ecology - Natural habitat - Optimum conditions - Optimum temperature - Production capacity - Production condition - Reducing sugars - Regression tests - Sweet sorghum - Target size
Classification code: 822.3 Food Products - 815.1.1 Organic Polymers - 801.2 Biochemistry - 921.5 Optimization Techniques - 801.1 Chemistry, General - 461.2 Biological Materials and Tissue Engineering - 454.3 Ecology and Ecosystems - 461.9 Biology
DOI: 10.3969/j.issn.1000-1298.2010.Supp.031
Database: Compendex 4. Accession number: 20104313334981
Title: Effect of vacuum cooling on temperature and vase life of gerbera cut flowers
Authors: Song, Xiaoyong1 ; Li, Yunfei2
Author affiliation: 1 School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2 School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
Corresponding author: Li, Y. (yfli@sjtu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 167-171
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 temperature distribution and variation of the ligule-shape petal, tubular petal and stem of individual and bunches of cut gerbera during vacuum cooling was measured by thermal infrared imaging. Relative fresh weight, stomatal conductivity and transpiration were analyzed during vase period. The results showed that the temperatures and three indexes were marked differently (P<0.05). The average precooling end-temperature and vase life of individual flowers were 11.2°C lower and 1.7 days longer than bunches of flowers respectively. This research has important value in the determination of pre-cooling end-temperature, the optimization of cooling processes and the evaluation of pre-cooling effect of different amounts of cut flowers.
Number of references: 22
Main heading: Cooling
Controlled terms: Imaging systems - Infrared devices - Infrared radiation - Plants (botany) - Thermography (imaging) - Vacuum - Vacuum applications
Uncontrolled terms: Cooling process - Cut flowers - Fresh weight - Important value - Pre-cooling - Stomatal conductivity - Thermal infrared imaging - Three Indexes - Vacuum cooling
Classification code: 746 Imaging Techniques - 742.1 Photography - 741 Light, Optics and Optical Devices - 641.2 Heat Transfer - 633.1 Vacuum Applications - 633 Vacuum Technology - 461.9 Biology
DOI: 10.3969/j.issn.1000-1298.2010.Supp.036
Database: Compendex 5. Accession number: 20104313334973
Title: Study on the heat transfer mechanism between the solid heat carrier and biomass particles
Authors: Li, Zhihe1 ; Cui, Xibin1 ; Bai, Xueyuan1 ; Yi, Weiming1 ; Li, Yongjun1
Author affiliation: 1 School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
Corresponding author: Yi, W. (yiweiming@sdut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 128-132
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 heat transfer mechanism between biomass particles and ceramic ball heat carriers was the subject of this study. The convective experiments between the ceramic balls and air, as opposed to heat transfer experiments involving the solid carriers and biomass particles and pyrolytic gaseous product, were conducted using the particles-separating apparatus. The convective heat transfer principle between one solid carrier and air as well as between biomass and solid carriers were discussed. According to the experimental data, the convective heat transfer coefficient of one ceramic ball was analyzed based on the theoretical and non-dimensional analytical methods, which were 291.3 W/(m2 · °C) and 200.3 W/(m2 · °C) respectively. The non-dimensional equations of biomass particles and ceramic balls were also determined via the heat balance analysis method and the non-dimensional equation, which were Nuc=176 0.079 Rec and Nub=22.97 0.2251 Reb respectively.
Number of references: 9
Main heading: Heat convection
Controlled terms: Biomass - Ceramic materials - Experiments - Heat transfer coefficients - Spheres
Uncontrolled terms: Analytical method - Biomass Particle - Ceramic balls - Convective heat transfer - Convective heat transfer Coefficient - Experimental data - Gaseous products - Heat balance analysis method - Heat carriers - Heat transfer mechanism - Non-dimensional equations - Particle
Classification code: 525.1 Energy Resources and Renewable Energy Issues - 631 Fluid Flow - 641.2 Heat Transfer - 812.1 Ceramics - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.Supp.028
Database: Compendex 6. Accession number: 20104313334964
Title: Virtual experiment on flow simulation of sugarcane harvester
Authors: Xie, Fuxiang1 ; Ou, Yinggang1 ; Liu, Qingting1 ; Liu, Yundong2 ; Yang, Dantong1
Author affiliation: 1 Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Guangzhou 510642, China
2 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Ou, Y. (ouying@scau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 90-94
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 lift sugarcane in harvesting, the whole stalk sugarcane harvester was designed. Virtual prototyping and key parts of the sugarcane harvester were simulated in PRO/E and ADAMS. The virtual experiment was conducted in order to study the lifting device, cutting device, gripping conveyor, laying transmission device and cleaning device, and to analyze the flow in various parts of the sugarcane harvester. A high-speed photography experiment was carried out to analyze lifter and gripping conveyor. The field experiment was validated. Virtual results showed that the virtual prototype could smoothly lift, cut, clamp, lay and clean. Reference value was provided for physical prototype in manufacture.
Number of references: 11
Main heading: Experiments
Controlled terms: Conveyors - Flow simulation - Harvesters - High speed photography
Uncontrolled terms: Cleaning devices - Field experiment - Key parts - Lifting devices - Logistic process - Reference values - Simulation - Virtual experiments - Virtual prototype - Virtual prototyping
Classification code: 692.1 Conveyors - 723.5 Computer Applications - 742.1 Photography - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.Supp.019
Database: Compendex 7. Accession number: 20104313334946
Title: Design and experiment of inlet guide vane for centrifugal pump
Authors: Cao, Shuliang1 ; Tan, Lei1 ; Gui, Shaobo2
Author affiliation: 1 State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
2 Changjiang Institute of Survey, Planning, Design and Research CWRC, Wuhan 430010, China
Corresponding author: Cao, S. (caoshl@mail.tsinghua.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 1-5
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In light of the drawbacks of the 2-D wing, with the reference of traditional adjustments on the blower, a new hydraulic design method for the inlet guide vane was proposed. It was supposed that the fluid at the outlet of the inlet guide vane satisfied the conditions at the moment of uniform velocity. The spatial shape of the blade was controlled by the distributed rule of the blades, which were at staggered angles along the meridional streamline; this could be determined with a quarternary polynomial. A point-by-point integration method was adopted to draw the bone line of the blade. The blade was thickened on two sides on an unwrapped cylinder surface. Once complete, the spatial guide vane was used for a centrifugal pump, and the experiment was performed with the inlet guide vane fixed at various axial positions and pre-whirl angles. The results indicated that the designed guide vane enlarged the high efficiency scope and improved the hydraulic performance of the centrifugal pump. When compared with the performance of the centrifugal pump without inlet guide vane, the peak value of efficiency was enhanced by 2.0% after the 3-D guide vane was installed. This method improved efficiency and saved energy for the centrifugal pump.
Number of references: 7
Main heading: Pumps
Controlled terms: Centrifugal pumps - Experiments - Hydraulic machinery - Hydraulics - Pumping plants - Wakes
Uncontrolled terms: Axial positions - Cylinder surface - Guide vane - High efficiency - Hydraulic designs - Hydraulic performance - Inlet guide vane - Integration method - Peak values - Pre-whirl regulation - Spatial shape
Classification code: 446 Waterworks - 618.2 Pumps - 631.1 Fluid Flow, General - 632.1 Hydraulics - 632.2 Hydraulic Equipment and Machinery - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.Supp.001
Database: Compendex 8. Accession number: 20104313334997
Title: Design of vision navigation controller for combine harvester
Authors: Ding, Youchun1 ; Liao, Qingxi1 ; Huang, Haidong1 ; Duan, Hongbing1 ; Chen, Hong1 ; Chen, Xiaokun2
Author affiliation: 1 College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
2 College of Science, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author: Ding, Y. (kingbug163@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 239-243
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 velocity adaptive navigation controller was designed. On the harvester vision navigation experimental platform, a double closed-loop control structure, which used PD control mode, was put forward and the navigational deviation was set up according to the deviation of the heading angle and lateral position of the structure. The relationships between the control parameters of the control gain K and the control period T, and the harvester speed v were experimentally obtained. The computing method of inner closed loop control was given based on the method of one dynamic calibration for the rear wheel at mid-position-voltage. The test results on road and in wheat field showed that the combine harvester could trace the navigation line at different speeds, and on the road, the maximal tracing error was 0.05 m. In wheat fields, the change of harvesting width was in 0.18m during the working speed.
Number of references: 16
Main heading: Controllers
Controlled terms: Adaptive control systems - Closed loop control systems - Control system analysis - Design - Harvesters - Navigation - Roads and streets - Speed
Uncontrolled terms: Adaptive navigation - Closed-loop control - Combine harvesters - Computing methods - Control gains - Control parameters - Control periods - Different speed - Double closed-loop control - Dynamic calibration - Experimental platform - Heading angles - PD control - Rear wheels - Test results - Vision navigation - Wheat fields - Working speed
Classification code: 931.1 Mechanics - 821.1 Agricultural Machinery and Equipment - 732.1 Control Equipment - 731.1 Control Systems - 716.3 Radio Systems and Equipment - 408 Structural Design - 406.2 Roads and Streets
DOI: 10.3969/j.issn.1000-1298.2010.Supp.052
Database: Compendex 9. Accession number: 20104313334957
Title: Overseas development of water-saving irrigation engineering technology
Authors: Jin, Hongzhi1 ; Yan, Haijun2 ; Qian, Yichao
Author affiliation: 1 Center for Water-saving Irrigation Equipment, Chinese Academy of Agricultural Mechanization and Sciences, Beijing 100083, China
2 College of Water Conversancy and Civil Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Jin, H. (Jinhongzhi@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 59-63
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 technical method of increasing water resources and reducing water consumption was presented. The work of water-saving irrigation should be regarded as a system of engineering integrated with several technologies including planning and designing, product manufacturing, agronomic knowledge, service management and so on. New technologies relevant to water supply, water delivery and water distribution were introduced, and their development trend in the 21st century was described. The problems that need to be observed, analyzed and solved were also proposed from the systems engineering viewpoint of water-saving irrigation.
Number of references: 17
Main heading: Water resources
Controlled terms: Drainage - Irrigation - Machinery - Planning - Water conservation - Water supply - Water supply systems
Uncontrolled terms: Development trends - New technologies - Product manufacturing - Service management - Water consumption - Water delivery - Water distributions - Water-saving irrigation
Classification code: 821.3 Agricultural Methods - 601 Mechanical Design - 502 Mines and Quarry Equipment and Operations - 446.1 Water Supply Systems - 444 Water Resources - 442 Flood Control; Land Reclamation - 406 Highway Engineering - 403 Urban and Regional Planning and Development - 401 Bridges and Tunnels
DOI: 10.3969/j.issn.1000-1298.2010.Supp.012
Database: Compendex 10. Accession number: 20104313334960
Title: Design and experiment of plastic film collector for cotton fields during seedling period
Authors: Yang, Li1 ; Liu, Jia1 ; Zhang, Dongxing1 ; Hou, Shulin1 ; Xu, Fei1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Zhang, D. (zhangdx@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 73-77
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 plastic film collector which could recycle plastic film for cotton fields during seedling period was designed, and the parameters of key components were analyzed and confirmed for film-loosening shovel, combined soil-dithering roller etc. The results of film separating from seedlings and soil were achieved very well by using claw type film-loosening shovel combined with flat spindle soil-dithering roller. The problem of breaking or blocking film was resolved by using a floating curl-up film roller which was synchronous with driving roller. Experimental results showed that the best working speed of the collector was 2~3km/h, and the recovery rate was higher than 95.7% and the injury rate to cotton seedlings was less than 2.37% when the height of cotton seedlings was lower than 30cm. The collector could pick up plastic film during seedling period for cotton fields which were used the planting pattern of one film two row seedlings.
Number of references: 12
Main heading: Experiments
Controlled terms: Cotton - Design - Occupational risks - Plastic films - Protective coatings - Rollers (machine components) - Seed - Shovels - Soils
Uncontrolled terms: Injury rate - Key component - Recovery rate - Seedling - Working speed
Classification code: 914.1 Accidents and Accident Prevention - 901.3 Engineering Research - 821.4 Agricultural Products - 817.1 Polymer Products - 813.2 Coating Materials - 601.2 Machine Components - 483.1 Soils and Soil Mechanics - 408 Structural Design - 405.1 Construction Equipment
DOI: 10.3969/j.issn.1000-1298.2010.Supp.015
Database: Compendex 11. Accession number: 20104313334975
Title: Pretreatment of micro-column, cortex and epidermis of corn stover by alkali oxide
Authors: Yang, Peizhou1 ; Jiang, Shaotong1 ; Zheng, Zhi1 ; Luo, Shuizhong1 ; Gao, Xingxing1
Author affiliation: 1 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: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 137-140
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: Micro-column, cortex and epidermis of corn stover were used to produce cellulases. The effects of solid-liquid rate (SL), fermentation time (FT), concentration of alkali oxide (AO) and pretreatment time (PT) on reducing sugar contents and filter paper activity(FPA) of the solution in the broth were investigated. Orthogonal tests were performed to optimize the saccharification conditions further. The results showed that the highest contents of reducing sugars were determined for the micro-column, cortex and epidermis of corn stover under the conditions of SL 1:20/FT 5d/AO 1%/PT 3d, SL 1:15/FT 5.5d/AO 1%/PT 3.5d and SL 1:15/FT 5d/ AO 1%/PT 3d, respectively. The contents of reducing sugar reached 15.92%, 12.43% and 5.93%, and the highest saccharification percentages of the lignocelluloses reached 31.84%, 18.65% and 8.9%, respectively under the above conditions. The developing trend of filter paper activity was similar to the concentration of reducing sugar under lower concentrations of reducing sugar.
Number of references: 13
Main heading: Liquid sugar
Controlled terms: Cellulose - Lignin - Saccharification - Sugar (sucrose)
Uncontrolled terms: Alkali oxide - Corn stover - Developing trend - Filter paper activity - Lignocelluloses - Orthogonal test - Pre-Treatment - Reducing sugars - Solid-liquid - Trichoderma reesei
Classification code: 811.3 Cellulose, Lignin and Derivatives - 815.1.1 Organic Polymers - 822.3 Food Products
DOI: 10.3969/j.issn.1000-1298.2010.Supp.030
Database: Compendex 12. Accession number: 20104313334961
Title: Design of rejuvenation and acceleration root-cutting machine
Authors: Yang, Jiaqing1 ; Guo, Yuming1
Author affiliation: 1 College of Engineering, Shanxi Agricultural University, Taigu 030801, China
Corresponding author: Guo, Y. (guoyuming99@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 78-81
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 counter the problem of reduced health promotion ability in typical grass with compacted roots, a root-cutting machine was designed for pasture. The machine used cam-driven of direct cutter to cut root vertically, greatly reducing resistance and perturbations of soil surface while cutting the root, which reached easy work in varies of forage. The machine destroyed solid soil, improved grassland, and increased grass yield. As proven by analyzing the velocity, acceleration and force of the machine was able to meet the needs of designing. It is a more ideal agricultural machine for forage grass.
Number of references: 10
Main heading: Machine design
Controlled terms: Agricultural machinery - Agriculture - Cutting - Cutting equipment - Soils
Uncontrolled terms: Agricultural machine - Cutting machines - Direct cutter - Forage grass - Health promotion - Root-cutting machine - Soil surfaces
Classification code: 483.1 Soils and Soil Mechanics - 601 Mechanical Design - 604.1 Metal Cutting - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment
DOI: 10.3969/j.issn.1000-1298.2010.Supp.016
Database: Compendex 13. Accession number: 20104313334985
Title: Test on forage dryness using low temperature
Authors: Du, Jianqiang1 ; Yang, Shikun1 ; Liu, Guilin1 ; Wang, Ruixian1 ; Liu, Zhigang1 ; Wang, Qiang1
Author affiliation: 1 Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010020, China
Corresponding author: Yang, S. (yskun001@sohu.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 186-190
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 improve solar drying efficiency, forage drying characteristics using low temperature were studied. In the condition of low temperature, lucerne was dried using a dryness test-bed. Through testing and analysis, changes in lucerne moisture content, weight, and surface temperature during the course of lucerne drying were determined. The results showed that the surface temperature of heating during the first stage of drying had the fastest decline to 0.43%/min water content. When the surface temperature was moderate, water drop speed gradually slowed to 0.116%/min; and the water content decline in the third stage was 0.039%/min.
Number of references: 16
Main heading: Water content
Controlled terms: Atmospheric temperature - Curing - Curricula - Drying - Heating - Moisture determination - Surface properties - Surface testing
Uncontrolled terms: Drying characteristics - Low temperatures - Lucerne - Moisture content - Moisture contents - Solar - Solar drying - Surface temperatures - Test - Water drop
Classification code: 951 Materials Science - 944.2 Moisture Measurements - 901.2 Education - 815.1 Polymeric Materials - 643.1 Space Heating - 642.1 Process Heating - 444 Water Resources - 443.1 Atmospheric Properties - 423.2 Non Mechanical Properties of Building Materials: Test Methods
DOI: 10.3969/j.issn.1000-1298.2010.Supp.040
Database: Compendex 14. Accession number: 20104313334956
Title: Saline water infiltration with different initial moisture contents
Authors: Wu, Zhongdong1 ; Wang, Quanjiu2
Author affiliation: 1 Institute of Resources and Environment Engineering, Shandong University of Technology, Zibo 255049, China
2 Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an 710048, China
Corresponding author: Wu, Z. (wuzhongdong@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 53-58
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The effect of the infiltration process with initial moisture contents of 2.25%, 8.18%, 13.12% and 16.40% was examined by indoor uniformity earth pillar experiments. The infiltration water mineralization degree was 3g/L. Both cumulative infiltration and wetting front vs. time with different initial moisture contents infiltrated by saline water were analyzed. Fitting the relationship between cumulative infiltration and time with Kostiakov model, the results showed that the initial moisture content and soil infiltration capacity were negatively correlated. The relationship between wetting front advancing depth and time was fitted by power function. It proved that power function was obvious between them, the lower the initial moisture content was, the slower wetting front advancing rate would be. A 1-D algebraic model was used to analyze soil moisture profiles; it was found that theoretical values were more accurate as the initial moisture contents increased. In brief, there was an intimate connection between soil infiltration capacity and initial moisture contents infiltrated by saline water. As the infiltration process was carried out, the influence of initial moisture contents on infiltration capacity gradually decreased.
Number of references: 11
Main heading: Saline water
Controlled terms: Algebra - Geologic models - Moisture determination - Seepage - Soil mechanics - Soil moisture - Water content - Wetting
Uncontrolled terms: Algebraic models - Cumulative infiltration - Infiltration capacity - Infiltration process - Initial Moisture Content - Power functions - Soil infiltration capacities - Soil moisture profiles - Theoretical values - Water infiltration - Water mineralization - Wetting front - Wetting fronts
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 921.1 Algebra - 483.1 Soils and Soil Mechanics - 944.2 Moisture Measurements - 481.1 Geology - 441 Dams and Reservoirs; Hydro Development - 407 Maritime and Port Structures; Rivers and Other Waterways - 444 Water Resources
DOI: 10.3969/j.issn.1000-1298.2010.Supp.011
Database: Compendex 15. Accession number: 20104313334993
Title: Design and experiment of QNZ15 automatic poultry eviscerator
Authors: Wang, Lihong1 ; Yan, Chuliang1 ; Ye, Jinpeng1 ; Ma, Pengwei1 ; Wang, Zikan1 ; Pan, Man1
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Wang, L. (wanglh_beijing@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 220-224
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: This automatic poultry eviscerator was designed based on imported advanced poultry-eviscerating technology. The machine can eviscerate all poultry entrails at once, with the exception of the lung and kidney. The main parts of this prototype were introduced, including chain wheel system, eviscerating manipulator, cam mechanism and height adjustment mechanism etc. Processing tests were done to measure the main performance indexes of the prototype. The results showed that the optimum distance between the shackle bottom and the manipulator extremity was 310-320 mm for a duck size range of 2.5-3.5 kg(live weight). The percent of remaining entrails was 5.6%. The liver was easy to damage and the entrails damage mark was 8.3.
Number of references: 8
Main heading: Design
Controlled terms: Cams - Experiments - Manipulators
Uncontrolled terms: Adjustment mechanisms - Automatic eviscerator - Cam mechanism - Performance indices - Poultry - Size ranges - Wheel system
Classification code: 408 Structural Design - 601.3 Mechanisms - 731.5 Robotics - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.Supp.048
Database: Compendex 16. Accession number: 20104313334948
Title: Numerical calculation of cavitating flow in impeller of axial-flow pump
Authors: Yang, Minguan1 ; Ji, Kai1 ; Li, Zhong1
Author affiliation: 1 School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Yang, M. (sepe@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 10-14
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: Cavitation performance curves of the model axial-flow pump were established on the basis of the hydraulic characteristic test with a numerical simulation of steady cavitating flow. Under the designed working conditions, the whole flow passage of the model axial-flow pump was carried out using a full cavitation model and a mixed two-phase flow model. The cavitation flow of the impeller was analyzed by comparing the primary cavitation, critical cavitation, and serious cavitation. The distribution of static pressure and vapor volume fraction of the blade's suction surface were observed and the vapor volume fraction of the axial section was obtained. The simulation results showed that cavitation first occurred on the local low-pressure area on the back of the blade's leading edge, which was close to the tip. When the pump ran at its critical cavitation point, the chord length of the cavitation region was 2/3 of the length from the back of blade's leading edge to its trailing edge, approximately 50% of the back of the blade. After further increasing cavitation, the cavitation region extended towards the trailing edge and the fraction of its volume became larger. When local cavitation occurred in the impeller, it did not affect the power of the pump; however, when cavitation was serious, the over-current cross section close to the leading edge was obstructed, and the pump's power declined seriously. The results of the simulation agreed with basis of the hydraulic characteristic test, revealed the axial flow impeller cavitation within the static characteristics.
Number of references: 11
Main heading: Cavitation
Controlled terms: Axial flow - Buoyancy - Flow simulation - Hydraulics - Mathematical models - Multiphase flow - Pumps - Titration - Vapors
Uncontrolled terms: Axial flow impellers - Axial flow pump - Axial sections - Cavitating flow - Cavitation flow - Cavitation model - Cavitation performance - Chord lengths - Cross section - Hydraulic characteristic - Leading edge - Low-pressure area - Numerical calculation - Numerical simulation - Over current - Simulation result - Static characteristic - Static pressure - Suction surfaces - Trailing edges - Two phase flow model - Vapor volume fraction - Whole flow passage - Working conditions
Classification code: 618.2 Pumps - 631 Fluid Flow - 632.1 Hydraulics - 801 Chemistry - 804 Chemical Products Generally - 921 Mathematics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.003
Database: Compendex 17. Accession number: 20104313334962
Title: Kinematical simulation of three separating planting bars of high-performance rice transplanter based on ADAMS
Authors: Ji, Shunzhong1 ; Li, Shuang2 ; Chen, Shuren2 ; Bian, Suiqing1 ; Yin, Jianjun2 ; Yang, Genlin1
Author affiliation: 1 Jiangsu Yunma Agricultural Machinery Co., Ltd., Dafeng 224112, China
2 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Chen, S. (srchen@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 82-85
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The results of the recent separating-planting mechanism were first taken into consideration. This mechanism increased its rotational speed to improve its operational efficiency; yet by increasing the velocity of the needle of the separating-planting bar, it increased the seeding injury rates at the same time. As a result, a newly designed mechanism, as well as studies on its affect on the survival and growth of rice, was introduced. The new type of separating-planting mechanism had three separating planting bars with an elliptic plant gear system of high-performance rice transplanters. Adding an additional separating planting bar kept the high operational efficiency of the rice transplanter while slowing the rotational speed to decrease seeding injury rate. Its kinematic model was established on the basis of transmission analyses of planetary elliptic gears systems; 3-D models were established by SolidWorks and the kinematics simulation was analyzed by ADAMS. Under the condition of the same operating efficiency, the speed decreased by 30%.
Number of references: 7
Main heading: Kinematics
Controlled terms: Gears - Speed - Three dimensional
Uncontrolled terms: 3D models - Elliptic gears - Gear system - Injury rate - Kinematic model - Kinematics analysis - Kinematics simulation - Operating efficiency - Operational efficiencies - Rice transplanter - Rotational speed - Simulation - SolidWorks - Survival and growth - Transplanting mechanism
Classification code: 601.2 Machine Components - 902.1 Engineering Graphics - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.017
Database: Compendex 18. Accession number: 20104313335003
Title: Design and experiment of automatic quality grading equipment in grain purchase
Authors Zhao, Bo1 ; Mao, Wenhua1 ; Hu, Xiaoan1 ; Zhang, Xiaochao1
Author affiliation: 1 State Key Laboratory of Soil-Plant-Machinery System Technology, Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Zhao, B. (zhaoboshi@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 268-271 276
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: Automatic, quality-grading equipment was designed for grain purchasing, which could detect and grade grain impurities and moisture using the capacitance measurement method, and bulk density using the vacuum negative pressure method. Experimental results showed that after the separation of impurities, the grain purity was 99.5%, the repeatability error of impurity separation was less than 0.3%, moisture error was within ±0.5%, the repeatability error of moisture was less than 0.2%, and the repeatability error of bulk density was less than 3 g/L.
Number of references: 10
Main heading: Impurities
Controlled terms: Capacitance measurement - Grading - Moisture - Sales
Uncontrolled terms: Bulk density - Grain impurities - Grain purchase - Impurity separation - Negative pressures - Quality grading
Classification code: 801.4 Physical Chemistry - 911.4 Marketing - 913.3 Quality Assurance and Control - 942.2 Electric Variables Measurements - 951 Materials Science
DOI: 10.3969/j.issn.1000-1298.2010.Supp.058
Database: Compendex 19. Accession number: 20104313334951
Title: Counting method of stress and application in fatigue life prediction of pump
Authors: Gao, Jiangyong1 ; Wang, Fujun1 ; Zhang, Zhimin2
Author affiliation: 1 College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
2 China Institute of Water Resources and Hydropower Research, Beijing 100044, China
Corresponding author: Wang, F. (wangfj@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 27-31 38
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 life prediction of the pump and the counting method of stress were the subjects of this investigation. Aiming at the defect of the previous consideration that failed in attempts to count stress cycles, the concept of critical net stress was proposed to modify the counting principle. The improvements were made based on the concept of critical net stress. The improved counting method for predicting the fatigue life of an axial flow pump impeller was implemented. In addition, the key steps of the fatigue life prediction method were introduced based on 2-D probabilistic Miner-rule.
Number of references: 11
Main heading: Forecasting
Controlled terms: Fatigue damage - Miners - Pumps
Uncontrolled terms: Axial flow pump - Critical net - Cycle counting - Fatigue life - Fatigue life prediction - Life predictions - Stress cycle
Classification code: 421 Strength of Building Materials; Mechanical Properties - 502 Mines and Quarry Equipment and Operations - 618.2 Pumps - 921 Mathematics - 951 Materials Science
DOI: 10.3969/j.issn.1000-1298.2010.Supp.006
Database: Compendex 20. Accession number: 20104313335004
Title: 3-D framework of agricultural mechanization standard system
Authors: Wang, Xinying1 ; Wang, Song1
Author affiliation: 1 Information Division, China Agricultural Machinery Testing Center, Beijing 100122, China
Corresponding author: Wang, X. (wang_xy100@hotmail.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 272-276
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: At present, the standard system of agricultural mechanization in China faces some problems such as loose-standard, inadequate integrity, unbalanced development and so on. Based on the investigation and analysis of the existing agricultural mechanization standard system, this paper mainly considered the necessity of the agricultural mechanization standard system development. The 3-D framework consisting of field, product, type of standard of agricultural mechanization was designed by using analytic hierarchy process and 3-D structural method.
Number of references: 6
Main heading: Standardization
Controlled terms: Decision theory - Hierarchical systems - Machinery - Mechanization - Three dimensional
Uncontrolled terms: 3-D framework - Agricultural mechanization - Standard system - Structural methods
Classification code: 601 Mechanical Design - 902.1 Engineering Graphics - 902.2 Codes and Standards - 921 Mathematics - 961 Systems Science
DOI: 10.3969/j.issn.1000-1298.2010.Supp.059
Database: Compendex 21. Accession number: 20104313334988
Title: Enzymatic preparation of anti-oxidation peptide from potato pulp
Authors: Wang, Bei1 ; Ma, Haile1 ; Qiao, Wei1
Author affiliation: 1 School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Ma, H. (mhl@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 198-202
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Protease screening was studied to prepare potato antioxidant peptide using the enzymolysis method. With potato dregs as the raw material and the scavenging rate of hydrolysate to the DPPH radical as an index, neutral protease was screened out from the following six kinds of protease: papain, flavor protease, neutral protease, alkaline protease, trypsin and pepsin. The optimum hydrolysis conditions obtained by the experiments were substrate concentration 4 g/(100 mL), 7% enzyme-substrate ratio, pH value 8.0, 50°C and 90min reaction time. After being diluted 20 times, the scavenging rate of hydrolysate liquid to the DPPH radical reached 72%. The EC50 value of hydrolysate scavenging the DPPH radical was 0.155 g/(100 mL).
Number of references: 9
Main heading: Scavenging
Controlled terms: Peptides
Uncontrolled terms: Alkaline protease - Anti-oxidation - Antioxidant peptides - Enzymatic preparation - Neutral protease - pH value - Potato pulp - Reaction time - Scavenging rate of DPPH radical - Scavenging rates - Substrate concentrations - Zymohydrolysis
Classification code: 461.9 Biology - 612.1 Internal Combustion Engines, General
DOI: 10.3969/j.issn.1000-1298.2010.Supp.043
Database: Compendex 22. Accession number: 20104313334959
Title: Design of micro-cultivator testing platform with annular soil bin
Authors: Yan, Hua1 ; Wu, Jianmin2 ; Lin, Jintian1
Author affiliation: 1 Modern Agricultural Equipment Co., Ltd., Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
2 State Key Laboratory of Soil-Plant-Machinery System Technology, Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Yan, H. (yanhua@caams.org.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 68-72
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Traditional micro-cultivator field tests were restricted by many factors, and reliable tests in liner soil bins indoors could not be conducted; however, a new type of micro-cultivator testing platform was developed which could be performed continuously. The lengthy cyclic operations of the test platform were realized by adopting annular soil bins and closed-ended tracks. Functional trolleys were arranged individually so that they could walk steadily and swivel on six-wheeled walking mechanisms in the upper and lower trolleys, as well as the rotatable side wheel shaft. The platform merged upper and lower computer automatic controls, multi-sensors technology, wireless communication, gardens irrigation technology etc. Field conditions were simulated repeatedly. Performance and reliability experiments could both be carried out. More than ten parameters such as soil firmness, soil moisture, oscillation and forces of micro-cultivator handling etc. were collected, displayed and analyzed conveniently by the micro-cultivator testing platform.
Number of references: 12
Main heading: Soil testing
Controlled terms: Agricultural machinery - Automation - Bins - Control - Irrigation - Soil moisture - Wireless telecommunication systems
Uncontrolled terms: AS-soils - Automatic control - Cyclic operation - Field conditions - Field test - Micro-cultivator - Multi sensor - Soil bin - Soil bins - Test platforms - Testing platform - Testing platforms - Walking mechanism - Wheel shafts - Wireless communications
Classification code: 821.1 Agricultural Machinery and Equipment - 732 Control Devices - 731 Automatic Control Principles and Applications - 821.3 Agricultural Methods - 717 Optical Communication - 694.4 Storage - 483.1 Soils and Soil Mechanics - 716 Telecommunication; Radar, Radio and Television
DOI: 10.3969/j.issn.1000-1298.2010.Supp.014
Database: Compendex 23. Accession number: 20104313334991
Title: Study on effect of ultra-high pressure processing on sterilization of raspberry juice
Authors: Yan, Xuefeng1 ; Zhao, Youbin1
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Yan, X. (cpfmc@yahoo.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 212-215
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: Natural microflora, yeast and mold, E.coli, and Salmonella in fresh raspberry juice were taken as the research objects for discussing the sterilizing effect of UHP. It showed that the higher the pressure was, the better the sterilization effect would be; with increased holding pressure time, the lethal effect on these microorganisms became stronger. At room temperature(25°C) and with the pressure of 200 MPa, E. coli was totally killed when the holding pressure time was 5min. At the pressure of 300 MPa and holding pressure time of 15min, Salmonella was totally killed. At pressure of 400 MPa and holding pressure time of 15min, mold and yeast were totally killed. When the pressure was 600 MPa and the holding pressure time was 25min, the micro-organisms in the juice were not completely killed; however, the total number of colonies could be reduced below 10 cfu/mL, which met the national food hygienic standard of China(NFHSC) criterion.
Number of references: 5
Main heading: Organic polymers
Controlled terms: Escherichia coli - High pressure effects - Microorganisms - Molds - Salmonella - Sterilization (cleaning) - Yeast
Uncontrolled terms: E. coli - Holding pressure - Hygienic standards - Lethal effects - Microflora - National Foods - Raspberry juices - Research object - Room temperature - Sterilization - Ultrahigh pressure
Classification code: 461.9 Biology - 801.2 Biochemistry - 815.1.1 Organic Polymers - 816.2 Plants and Machinery for Plastics and Other Polymers - 822.2 Food Processing Operations - 931.2 Physical Properties of Gases, Liquids and Solids
DOI: 10.3969/j.issn.1000-1298.2010.Supp.046
Database: Compendex 24. Accession number: 20104313334952
Title: Analysis of basic flow pattern in shaft front-positioned and shaft rear-positioned tubular pump systems
Authors: Liu, Jun1 ; Zheng, Yuan2 ; Zhou, Daqing1 ; Mao, Yuanting1 ; Zhang, Limin2
Author affiliation: 1 School of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
2 College of Energy and Electrical, Hohai University, Nanjing 210098, China
Corresponding author: Liu, J. (liujunrr@qq.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 32-38
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: Numerical calculation was performed with 16 different conditions from 50%-120% of the design flow in shaft front-positioned and shaft rear-positioned tubular pump systems by using software Fluent 6.2. The Reynolds-averaged Navier-Stokes equations were discretized and solved with Spalart-Allmaras turbulence model and SIMPLEC algorithm. The results of numerical simulation were compared with model test data which was converted into the prototype size, and the result of the comparison showed that the tendency of performance change is in good agreement, the efficiency error between calculation data and model data is ±5% under the condition of the same flow. The basic flow pattern of inlet conduit, pump chamber and outlet conduit was analyzed and compared, and the reason for hydraulic loss was investigated. The results indicated that the flow pattern in the inlet and outlet conduit of the shaft front-positioned tubular pump system was good, and that the flow pattern in the inlet conduit of the shaft rear-positioned tubular pump was uniform and smooth. However, the flow pattern in the outlet conduit was in disorder. The hydraulic loss was relatively large, and the efficiency was lower; guide vane and shaft are the critical factors to affect the flow pattern of outlet conduit and arrangement efficiency, stall and vortexes are easily appeared under the influence of guide vane circulation and shaft.
Number of references: 10
Main heading: Flow simulation
Controlled terms: Computational fluid dynamics - Flow patterns - Hydraulics - Inlet flow - Navier Stokes equations - Pumps - Turbulence models - Vortex flow
Uncontrolled terms: Analysis - Calculation data - Critical factors - Design flows - Guide vane - Hydraulic loss - Model data - Model tests - Numerical calculation - Numerical simulation - Pump chambers - Pump system - Reynolds averaged Navier-Stokes equation - Shaft tubular pump - SIMPLEC algorithm - Software FLUENT - Spalart-Allmaras turbulence model
Classification code: 618.2 Pumps - 631 Fluid Flow - 632.1 Hydraulics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.007
Database: Compendex 25. Accession number: 20104313334983
Title: Experiment on combining hot air and microwave vacuum to dry lyeium
Authors: Wu, Haihua1, 2 ; Han, Qinghua1 ; Yang, Bingnan1 ; Zhao, Donglin1 ; Li, Yifan1 ; Bai, Liufang1
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
2 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Yang, B. (yangbn@caams.org.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 178-181 202
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The effect of combining hot air with microwave vacuum to dry semi-dried lyeium, the effect of natural sun-drying, and the effect of microwave vacuum on fresh lyeium with different color-protecting methods were analyzed. Different drying methods, including a combination of hot-air and microwave vacuum, microwave vacuum, hot-air and natural sun drying were studied. The results proved that the quality of lyeium drying was improved by color protection. Drying in a microwave vacuum was better during the late drying phase rather than the early drying phase. The time to dry lyeium when combining the hot-air and microwave vacuum methods was 13.1 h, which decreased from hot-air drying (34.9 h) and natural sun drying (94.9 h). The combination drying method produced better quality than the microwave vacuum, but the result was similar to the method of hot-air drying. The reservation rate of lyeium barbarum polysaccharide was very close to that of hot-air drying and natural solar drying.
Number of references: 5
Main heading: Curing
Controlled terms: Drying - Microwaves - Solar dryers - Sun - Vacuum - Vacuum technology
Uncontrolled terms: Combination drying - Drying effect - Hot air drying - Lyeium - Microwave vacuum
Classification code: 633 Vacuum Technology - 642.1 Process Heating - 657.1 Solar Energy and Phenomena - 657.2 Extraterrestrial Physics and Stellar Phenomena - 711 Electromagnetic Waves - 815.1 Polymeric Materials
DOI: 10.3969/j.issn.1000-1298.2010.Supp.038
Database: Compendex 26. Accession number: 20104313334958
Title: Prediction for performance of seed-filling process based on improved BP neural network
Authors: Wang, Chong1 ; Song, Jiannong1 ; Wang, Jicheng1 ; Liu, Cailing1 ; Li, Yonglei1 ; Dong, Xiangqian1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Song, J. (songjn@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 64-67
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: Performance during the seed-filling process directly impacted the seed quality of the metering device. The improved BP neural network prediction model was a metering device that filled at a single-grain rate η1 and the miss rates η2 was established using the Matlab neural network toolbox. The speed n, seed equivalent diameter d, seed-filling angle β and type hole diameter D were selected as the test factors, the test was carried out on 64 groups to determine the single-particle and miss rate. 55 groups were selected from the test as training samples. The Levenberg-Marquardt training method was used to train the establishment of a network. The remaining 9 groups were selected to simulate and predict the trained and improved BP neural network. n, d, β and D were set as the network's input layers, η1 and η2 were set as the network's output layers, the network structure was the 4152 type three-layer network containing a single hidden layer. Predicted results showed that predicted values and experimental values were almost same, the predicted performance of seed-filling with the improved BP neural network method was feasible, the method can be used to optimize metering device design and provide a basis for the selection of working parameters, in addition to reducing test time and cost.
Number of references: 11
Main heading: Neural networks
Controlled terms: Filling - Forecasting - Mathematical models
Uncontrolled terms: BP neural networks - Equivalent diameter - Experimental values - Filling process - Hidden layers - Hole diameter - Improved BP neural network - Input layers - Levenberg-Marquardt - Metering device - Metering devices - Miss-rate - Network structures - Neural network toolboxes - Output layer - Performance prediction - Predicted performance - Seed quality - Single-particle - Test time - Three-layer - Training methods - Training sample - Working parameters
Classification code: 691.2 Materials Handling Methods - 723.4 Artificial Intelligence - 921 Mathematics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.013
Database: Compendex 27. Accession number: 20104313334971
Title: Experiment on the stability of plasma heating fluidized bed
Authors: Zhang, Chunmei1 ; Yi, Weiming2 ; Liu, Qingyu1 ; Sun, Qing1 ; Zhang, Wenji1
Author affiliation: 1 College of Engineering, Shenyang Agricultural University, Shenyang 110161, China
2 Shandong Research Center of Engineering and Technology for Clean Energy, Shandong University of Technology, Zibo 255049, China
Corresponding author: Yi, W. (yiweiming@sdut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 121-123
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 the experiment, a fluidized bed was heated using Ar plasma and electricity. The temperature was tested at different levels of the reactor in the preheating, reacting period and finishing reacting with the content electricity heating rate. The results showed that the duration of time required to preheat the reactor to the experimental temperature by using electricity was longer than that required by using Ar plasma, which was usually 60 min. When electricity was used, the peak difference in temperature between the beds was measured at about 200°C, while the difference attributed to Ar plasma heating was about 50°C. Further, Ar plasma heating resulted in even distribution of heat and steady operation of the fluidized bed.
Number of references: 8
Main heading: Fluidization
Controlled terms: Argon - Experiments - Fluidized beds - Plasma heating - Plasma stability - Plasmas - Pyrolysis
Uncontrolled terms: Ar plasmas
Classification code: 802 Chemical Apparatus and Plants; Unit Operations; Unit Processes - 804 Chemical Products Generally - 901.3 Engineering Research - 932.3 Plasma Physics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.026
Database: Compendex 28. Accession number: 20104313334974
Title: Control and measurement of temperature field in a down-flow tube reactor
Authors: Cui, Xibin1 ; Li, Zhihe1 ; Yi, Weiming1 ; Bai, Xueyuan1 ; Xu, Shizhen1 ; Cheng, Weidong1
Author affiliation: 1 School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, 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: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 133-136 132
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 study the volatilization characteristics of biomass, a downward-flow tube reactor with a temperature control and measurement system was designed and fabricated. Corn stalk powder pyrolysis experiments were conducted and the experimental results showed that the reaction temperature could be controlled and measured precisely; the volatilized fraction of corn stalk powder increased nonlinearly with increased reaction temperature and residence time.
Number of references: 12
Main heading: Tubes (components)
Controlled terms: Biomass - Chemical reactors - Pyrolysis
Uncontrolled terms: Control and measurement - Corn stalk - Downward tube - Fast pyrolysis - Flow tube reactor - Reaction temperature - Residence time
Classification code: 525.1 Energy Resources and Renewable Energy Issues - 616.1 Heat Exchange Equipment and Components - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions
DOI: 10.3969/j.issn.1000-1298.2010.Supp.029
Database: Compendex 29. Accession number: 20104313334969
Title: Experiment on straw rubber with radial feeding device
Authors: Liu, Gang1, 2 ; Zhao, Manquan1 ; Wang, Wenming1, 3 ; Liu, Weifeng1 ; Li, Lin1
Author affiliation: 1 College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
2 Zhong Huan Solar Material Limited Company of Inner Mongolia, Huhhot 010040, China
3 Department of Mechanical and Electrical Engineering, Xingtai Polytechnic College, Xingtai 054035, China
Corresponding author: Zhao, M. (nmgzmq@yahoo.com.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 110-116
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In the course of the study, the radial feeding device of 9R40 straw rubber was designed and installed. The experimental study on performance of straw rubber was carried out by going through altering the rotational speed of spindle, the rotational speed of feeding roll and the shape of hammer in feeding mouth. By means of orthogonal experimental analysis, the best parameters of production rate were obtained. The rotational speed of spindle was 2980 r/min, the rotational speed of feeding roll was 267 r/min and the shape of hammer was channel type. Based on the achievement, the production rate of 9R40 straw rubber equipped with radial feeding device was improved by 30% compared with original machine.
Number of references: 17
Main heading: Experiments
Controlled terms: Feeding - Hammers - Rubber - Speed
Uncontrolled terms: Experimental analysis - Experimental studies - Performance experiment - Production rates - Radial feeding - Rotational speed
Classification code: 605.2 Small Tools, Unpowered - 691.2 Materials Handling Methods - 818.1 Natural Rubber - 901.3 Engineering Research - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.024
Database: Compendex 30. Accession number: 20104313334965
Title: Design and experiment on self-propelled shrub cutter
Authors: Liu, Zhigang1, 2 ; Wang, Decheng2 ; Hao, Xingyu1 ; Liu, Guilin1 ; Zhang, Ning1 ; Wang, Zhijun1
Author affiliation: 1 Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010020, China
2 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Wang, D. (wdc@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 95-98 94
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: Aiming at some problems of shrub in western region, such as difficult to harvest, heavy labor intensity and low productivity and so on, moreover, in order to provide technical support for combating desertification, a self-propelled shrub harvester with special articulated carbody was developed. It can work in twist-waist manner and sway along the sector surface. Simultaneously, one new shrub harvesting method of vertical and horizontal profile modeling for shrub combined manual operation with adaptive profile modeling was proposed. Also experiments on caragana microphylla and sand willow harvest were carried out. The tested results were listed as follows: caragana microphylla missing cutting rate was equal or less than 0.8%, percent of broken stubble was 2.9%; sand willow missing cutting rate was equal or less than 0.8%, percent of broken stubble was 2.5%, the height of stubble was equal or less than 7 cm, reliability coefficient was 98.5%, the turnout was 3 t/h.
Number of references: 13
Main heading: Cutting
Controlled terms: Climatology - Design - Experiments - Harvesting - Landforms
Uncontrolled terms: Carbody - Combating desertification - Cutting rate - Desert shrub - Horizontal profile - Labor intensity - Manual operations - Shrub cutter - Technical support - Western region
Classification code: 408 Structural Design - 443 Meteorology - 481.1 Geology - 604.1 Metal Cutting - 821.3 Agricultural Methods - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.Supp.020
Database: Compendex 31. Accession number: 20104313334972
Title: PIV measurement of resident time for char particle in laminar entrained flow reactor
Authors: Wang, Lihong1 ; Yi, Weiming1 ; Bai, Xueyuan1 ; Liu, Zhuwei1
Author affiliation: 1 School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
Corresponding author: Yi, W. (yiweiming@sdut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 124-127
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 transparent simulating device was designed for investigating resident time of pyrolysis product of biomass in laminar entrained flow reactor. Resident time for char replacing pyrolysis product was measured using PIV(particle image velocimetry) at different gas flow rates and collection distances. Main gas flow rate, which measured at 1.0, 1.5, 2.0 and 2.5m3/h respectively, was determined by the similarity criteria that Reynolds number should be equal both in cold and hot flow field. Collection distances were 200, 250, 300 and 350mm. The results showed that the ratio of actual resident time of char and theoretical resident time of gas was proportional to Reynolds number, which meant the ratio of time and Reynolds number had one order functional relationship. Functional relation was different for different collection distances. It can therefore be concluded that when flow field is laminar, resident time of char can be calculated by functional relationship between ratio of time and Reynolds number.
Number of references: 17
Main heading: Reynolds number
Controlled terms: Aerodynamics - Flow fields - Flow of gases - Flow visualization - Pyrolysis - Velocity measurement
Uncontrolled terms: Char particles - Functional relation - Functional relationship - Gas flowrate - Laminar entrained flow reactor - Particle - Particle image velocimetries - PIV measurements - Pyrolysis products - Resident time - Similarity criteria
Classification code: 631.1 Fluid Flow, General - 631.1.2 Gas Dynamics - 651.1 Aerodynamics, General - 802.2 Chemical Reactions - 943.3 Special Purpose Instruments
DOI: 10.3969/j.issn.1000-1298.2010.Supp.027
Database: Compendex 32. Accession number: 20104313334994
Title: Quantitative study on the specific energy consumption of food twin-screw extruder
Authors: Sun, Zhihui1 ; Xu, Kefei1 ; Yang, Qiyun1 ; Tang, Qingju2
Author affiliation: 1 School of Light Industry, Harbin University of Commence, Harbin 150028, China
2 School of Mechanical Engineering, Heilongjiang Institute of Science and Technology, Harbin 150027, China
Corresponding author: Sun, Z. (sunzhihui1962@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 225-228
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 velocity and pressure fields of the fluid in the twin-screw extruder were studied using FEM. The specific energy consumption of various operations was obtained by post-processing. The experiment was designed using the rotatable and central composite method. The reason for the existing differences between the simulation and experimental results was analyzed, and the simulation results were corrected. The BP algorithm was trained based on the simulation and experimental results. The extruding system model of twin-screw extruder was built, and could be used to quantitatively predict the specific energy consumption of the extruder.
Number of references: 6
Main heading: Finite element method
Controlled terms: Electric load forecasting - Energy utilization - Extruders - Neural networks - Screws
Uncontrolled terms: BP neural networks - Finite Element - Food - Specific energy consumption - Twin screw extruders
Classification code: 525.3 Energy Utilization - 605 Small Tools and Hardware - 706.1 Electric Power Systems - 723.4 Artificial Intelligence - 816.2 Plants and Machinery for Plastics and Other Polymers - 921.6 Numerical Methods
DOI: 10.3969/j.issn.1000-1298.2010.Supp.049
Database: Compendex 33. Accession number: 20104313334999
Title: Sorting system of maize haploid kernels based on computer vision
Authors: Song, Peng1 ; Wu, Kebin1 ; Zhang, Junxiong1 ; Li, Wei1 ; Fang, Xianfa2
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Fang, X. (fangxf@caams.org.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 249-252
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 sorting system for maize haploid kernels marked with the Navajo label was designed. It consisted of a seed transmission unit, an image acquisition and processing unit, a sorting-unloading unit and a system control unit. The image acquisition and processing unit identified the haploid kernels according to the color features on maize embryo and the top of maize endosperm. Then it sent the identification information results to the system control unit. The system control unit, which controlled the motion of the seeds transmission unit and the mechanical arm of the sorting-unloading unit, opened the solenoid valves which connected to the mechanical arm. The system separated the heterozygote kernels from the haploid kernels using air-suction and achieved a sorting speed of 500 kernels per minute.
Number of references: 10
Main heading: Identification (control systems)
Controlled terms: Color - Computer vision - Image acquisition - Seed - Solenoid valves - Unloading
Uncontrolled terms: Color features - Haploids identification - Mechanical arm - Processing units - Seed transmission - Sorting system - System control
Classification code: 821.4 Agricultural Products - 741.2 Vision - 741.1 Light/Optics - 731.6 Robot Applications - 731.1 Control Systems - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 674.1 Small Marine Craft - 619 Pipes, Tanks and Accessories; Plant Engineering Generally
DOI: 10.3969/j.issn.1000-1298.2010.Supp.054
Database: Compendex
34. Accession number: 20104313334998
Title: Optimization design and kinematic analysis of cucumber-harvesting-robot manipulator
Authors: Feng, Qingchun1 ; Ji, Chao1 ; Zhang, Junxiong1 ; Li, Wei
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Feng, Q. (fengqingchun@gmail.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 244-248
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: As the cucumber harvesting robot works in the non-structure condition, the structure and movement of the manipulator directly determines operating space and picking success. According to the specific cucumber cultivation, the manipulator was designed and its structure parameters were optimized based on the method of the parameters optimization. With the DH kinematic model, the coordinate transformation was achieved between the Articulation and the Cartesian space, and the Jacobian matrix of velocity was derived. Besides, the model was built in the Articulation space for planning path by means of cubic polynomial interpolation. All the parameters optimized was simulated with Matlab, and the simulation results showed that the harvesting manipulator could reach the positions of 90.5% of the cucumbers in the workspace, moreover, it could move smoothly.
Number of references: 10
Main heading: Machine design
Controlled terms: Flexible manipulators - Harvesting - Industrial robots - Jacobian matrices - Kinematics - Linear transformations - Modular robots - Optimization - Robot application
Uncontrolled terms: Cucumber - Harvesting robot - Kinematic analysis - Parameter optimization - Robot manipulator
Classification code: 601 Mechanical Design - 731.5 Robotics - 731.6 Robot Applications - 821.3 Agricultural Methods - 921 Mathematics - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.053
Database: Compendex 35. Accession number: 20104313334980
Title: Technology of microalgae bioenergy industrialization
Authors: Li, Daoyi1 ; Li, Shujun2 ; Liu, Tianshu2 ; Zhao, Fengmin2 ; Yang, Juntai2 ; Li, Dong1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Li, S. (lisj@caams.org.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 160-166
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 development of microalgae bioenergy industry could realize the combination of bioenergy production, environmental protection and CO2 emission reduction, which had important potential for achieving the sustainable development of human society. The advantages of microalgae bioenergy and the key technologies of microalgae bioenergy industrialization (including the screening of microalgae strain, large-scale cultivation and harvest, conversion and utilization of microalgae energy, and bio-refining of microalgae biomass) were introduced, and the appropriate model of microalgae bioenergy industry based on the current situation was explored.
Number of references: 35
Main heading: Microorganisms
Controlled terms: Algae - Energy harvesting - Environmental protection - Industry - Sustainable development - Technology
Uncontrolled terms: Appropriate models - Bio-energy - Bioenergy industry - Current situation - Emission reduction - Human society - Industrialization - Key technologies - Micro-algae - Progress
Classification code: 912 Industrial Engineering and Management - 911.2 Industrial Economics - 911 Cost and Value Engineering; Industrial Economics - 901.4 Impact of Technology on Society - 913 Production Planning and Control; Manufacturing - 901 Engineering Profession - 461.9 Biology - 461.2 Biological Materials and Tissue Engineering - 454.2 Environmental Impact and Protection - 525.5 Energy Conversion Issues
DOI: 10.3969/j.issn.1000-1298.2010.Supp.035
Database: Compendex 36. Accession number: 20104313334953
Title: Study on Francis turbine with super-low specific speed applied in cooling towers
Authors: Zhang, Limin1 ; Zheng, Yuan1 ; Zhang, Chenghua2 ; Yin, Yiwu2 ; Liu, Jun3
Author affiliation: 1 College of Energy and Electrical, Hohai University, Nanjing 210098, China
2 Bailianhe Pumped Storage Co., Ltd., Wuhan 438600, China
3 School of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
Corresponding author: Zheng, Y. (zhengyuan@hhu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 39-42 72
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The surplus water head at industrial cooling towers is generally 4 to 15 meters. Using the surplus water head, a Francis turbine with super-low specific speed was designed to replace the fan motor in the cooling tower for energy saving. Based on the features of the surrounding environment, the runner blade airfoil was designed and optimized with 3-D numerical simulation through the whole flow passage of the turbine. Metal elliptical volutes and single-row ring guide vanes were applied in the structural design. After analyzing the numerical simulation results, an optimal model of 86% efficiency was selected for the physical model. The model test showed that the super-low specific speed Francis turbine met the dimensional requirement and had a high efficiency of 85.3%. Its stable performance can be popularized and applied in the capable local facilities.
Number of references: 10
Main heading: Computer simulation
Controlled terms: Airfoils - Cooling - Cooling towers - Francis turbines - Mathematical models - Optimization - Speed - Structural design - Turbines - Turbomachine blades
Uncontrolled terms: 3-D numerical simulation - Blade airfoil - Energy saving - Guide vane - High efficiency - Low specific speed - Model tests - Numerical simulation - Optimal model - Physical model - Surrounding environment - Test - Water heads - Whole flow passage
Classification code: 931.1 Mechanics - 921.5 Optimization Techniques - 921 Mathematics - 802.1 Chemical Plants and Equipment - 723.5 Computer Applications - 652.1 Aircraft, General - 641.2 Heat Transfer - 617.1 Hydraulic Turbines - 408.1 Structural Design, General
DOI: 10.3969/j.issn.1000-1298.2010.Supp.008
Database: Compendex 37. Accession number: 20104313334992
Title: Properties and micro-structure of leaf cut-off celery paper
Authors: Yang, Chuanmin1 ; Wang, Xinyu1 ; Shao, Cai1 ; Chen, Chao1 ; Kang, Jian1
Author affiliation: 1 School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
Corresponding author: Yang, C. (ychmin@tjcu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 216-219 238
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 the mechanical properties of vegetable paper used for packaging, the entire or sectioned leaf cut-off celery was macerated to different degrees and two samples of leaf cut-off celery paper were prepared under the condition of middle scale production. Fiber analyses were given by Swedish L&W fiber tester. The microstructure characteristics of leaf cut-off celery paper were presented through photographs from the Olympus microscope and micro-photograph analyzer. Mechanical properties were tested under standard conditions and their variation was analyzed. Results show the differences in tensile strength is 1.323 times between two samples. Compared with leafed celery paper, the tensile strength of leaf cut-off celery paper is generally 2.326 times greater and leaf cut-off celery paper also has better break percentage elongation.
Number of references: 8
Main heading: Mechanical properties
Controlled terms: Fibers - Paper - Photography - Tensile strength - Vegetables
Uncontrolled terms: Celery paper - Cut-off - Microstructure characteristics - Olympus - Percentage elongation - Standard conditions - Vegetable paper - W-fibers
Classification code: 821.4 Agricultural Products - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 951 Materials Science - 811.1 Pulp and Paper - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 746 Imaging Techniques
DOI: 10.3969/j.issn.1000-1298.2010.Supp.047
Database: Compendex 38. Accession number: 20104313334949
Title: Study on the relationship between system and pump efficiencies of low-head pumping systems
Authors: Zhang, Rentian1, 2 ; Zhu, Honggeng1 ; Yao, Linbi2
Author affiliation: 1 College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
2 Jiangsu Surveying and Design Institute of Water Resources Co., Ltd., Yangzhou 225009, China
Corresponding author: Zhu, H. (hgzhu@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 15-20
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The relationship between system efficiency and pump efficiency in low-head pumping stations depends on the hydraulic losses of its suction box and discharge passage. Based on the summary of the existing main methodologies for the relationship, the conventional basic hypothesis was verified and the antithesis discovered. The system efficiency was equal to the product of the passage efficiency and the pump efficiency; the passage losses occurred when there was no pump. Using CFD technology, the passage losses at different specific speeds modeled impellers with different types of suction boxes. Discharge passages were calculated and the relationship between the loss and flow rate in different systems was analyzed. When the passage loss was one with the pump, the product of the passage efficiency and the pump efficiency expressed the system efficiency. Near the optimal efficiency of the pump, the system efficiency expressed by the passage efficiency without the pump was nearly equal to the test results. The whole system, including the pump, must be considered for the optimal hydraulic design of the system.
Number of references: 15
Main heading: Pumps
Controlled terms: Computational fluid dynamics - Hydraulics - Optimization - Pumping plants
Uncontrolled terms: Basic hypothesis - Hydraulic designs - Hydraulic loss - Optimal efficiency - Passage efficiency - Pump efficiency - Pumping stations - Pumping systems - Relationship - Specific speed - Suction box - System efficiency - Test results - Whole systems
Classification code: 446 Waterworks - 618.2 Pumps - 632.1 Hydraulics - 921.5 Optimization Techniques - 921.6 Numerical Methods
DOI: 10.3969/j.issn.1000-1298.2010.Supp.004
Database: Compendex 39. Accession number: 20104313334954
Title: Structural design and optimization of triangle circulation drip irrigation emitters
Authors: Wang, Xinkun1 ; Li, Junhong1 ; Shan, Bin2 ; Wang, Guoxiang3
Author affiliation: 1 Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
2 Yishu HRC Water Conservancy Engineering Limited Company, Xuzhou 221000, China
3 Zhenlai Irrigation Drainage District Administration, Baicheng 137300, 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: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 43-46
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: Computational fluid dynamics software Fluent 6.3 was adopted to simulate the flow of triangle circulation drip irrigation emitters, the models were built by 3-D software Pro/E. By analyzing the flow hydraulic performance and the turbulence characteristics of emitters, the mechanism of internal turbulent flow was revealed, the flow structure was optimized. Based on the simulation results, by changing the shape and position of the external and the small internal triangular, a new type of triangle circulation drip irrigation emitter with flow index of less than 0.5 was got, velocity distribution was uniform, within the allowable flow range and excellent anti-clogging performance. A theoretical basis for the triangle circulation emitters structure design and quantitative analysis was provided.
Number of references: 9
Main heading: Structural optimization
Controlled terms: Computational fluid dynamics - Hydraulics - Irrigation - Structural design - Three dimensional
Uncontrolled terms: Emitter - Hydraulic performance - Numerical simulation - Structure optimization - Triangle circulation
Classification code: 408.1 Structural Design, General - 632.1 Hydraulics - 821.3 Agricultural Methods - 902.1 Engineering Graphics - 921.5 Optimization Techniques - 921.6 Numerical Methods
DOI: 10.3969/j.issn.1000-1298.2010.Supp.009
Database: Compendex 40. Accession number: 2010431333500
Title: Parameters measurement and control systems of agricultural equipment similarity based on various wireless transmission modes
Authors: Zhang, Chengtao1, 2 ; Tan, Yu1 ; Wu, Gang1 ; Wang, Shumao1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Automotive Department, Guangxi Institute of Technology, Liuzhou 545006, China
Corresponding author: Tan, Y. (tanyu32@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 257-262
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: There are disadvantages in agricultural equipment testing systems, such as difficulties with wiring, limited transmission and the problematic expansion. Yet with embedded technology and virtual instruments, the development of various wireless transmission modes for agricultural equipment, which related to parameters measurement and control systems, improved the overall reliability. Embedded technology and virtual instruments addressed testing in the field, the single function of traditional testing instruments, the lack intelligent data processing, and so on. The core technology integrated intelligent agricultural equipment by using similarity parameters acquisition, and wireless transmission platform development, in addition to computer software platforms for receiving and handling wireless data transmission. The quality of agricultural equipment and automation level was effectively improved.
Number of references: 10
Main heading: Data communication equipment
Controlled terms: Automobile engines - Automobile parts and equipment - Computer software - Control theory - Data handling - Digital instruments - Embedded systems - Equipment - Instrument testing - Technology transfer - XML
Uncontrolled terms: Agricultural equipment - Measurement and control system - Similarity parameter - Virtual instrument - Wireless transmissions
Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 731.1 Control Systems - 901 Engineering Profession - 901.4 Impact of Technology on Society - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 723.2 Data Processing and Image Processing - 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716 Telecommunication; Radar, Radio and Television - 663.2 Heavy Duty Motor Vehicle Components - 661.1 Automotive Engines - 723 Computer Software, Data Handling and Applications
DOI: 10.3969/j.issn.1000-1298.2010.Supp.056
Database: Compendex 41. Accession number: 20104313334986
Title: Treatment of potato starch wastewater
Authors: Li, Shujun1 ; Xie, An1 ; Lin, Yaling1 ; Yang, Bingnan1 ; Yang, Yanchen1 ; Ma, Teng1
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Li, S. (lisj@caams.org.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 191-194
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: During potato starch processing, a large volume of high-content organic acid wastewater was produced. This could result in serious environmental pollution if the wastewater was directly discharged. As a result, the treatment of potato starch wastewater has become a subject of increasing scrutiny. Various domestic and international methods for treating potato starch wastewater were introduced.
Number of references: 15
Main heading: Wastewater treatment
Controlled terms: Organic acids - Starch - Wastewater
Uncontrolled terms: Acid wastewater - Environmental pollutions - High-content - Potato starches - Treatment methods
Classification code: 452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 804.1 Organic Compounds
DOI: 10.3969/j.issn.1000-1298.2010.Supp.041
Database: Compendex 42. Accession number: 20104313334977
Title: Bio-oil/diesel emulsion fuel load characteristics of diesel engine
Authors: Li, Yongjun1 ; Yu, Jiye2 ; Bai, Xueyuan1 ; Cai, Hongzhen1
Author affiliation: 1 School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
2 School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China
Corresponding author: Li, Y. (liyongjun@sdut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 145-148 248
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 was produced by mixing bio-oil pyrolyzed corn stalk 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. The load characteristic curves of the diesel engine were determined. The experimental results showed that the effective thermal efficiency of two kinds of emulsified fuel was higher than that of the pure No.0 diesel oil. For emulsified fuel at bio-oil concentration of 15%, the specific fuel consumption was lower than that of No.0 diesel oil. However, there was often carbon deposition surrounding the diesel injector nozzle when using emulsified fuel.
Number of references: 12
Main heading: Emulsification
Controlled terms: Diesel engines - Diesel fuels - Engines - Fuel consumption - Surface active agents
Uncontrolled terms: Bio oil - Carbon deposition - Corn stalk - Diesel injector nozzles - Diesel oil - Emulsified fuel - Fuel loads - Homogenizers - Load characteristics - Oil ratio - Specific fuel consumption - Thermal efficiency
Classification code: 521 Fuel Combustion and Flame Research - 612 Engines - 612.2 Diesel Engines - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals
DOI: 10.3969/j.issn.1000-1298.2010.Supp.032
Database: Compendex 43. Accession number: 20104313334963
Title: Design of 3WDZ6 self-propelled cotton top cutting
Authors: Zhou, Haiyan1 ; Yin, Suzhen2 ; Zhu, Licheng3 ; Yang, Xuejun2 ; Yan, Herong1
Author affiliation: 1 National Research Center of Agricultural Machinery Engineering Technology, Beijing 100083, China
2 Modern Agricultural Equipment Co., Ltd., Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
3 State Key Laboratory of Soil-Plant-Machinery System Technology, Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Zhou, H. (emilyzhy@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 86-89
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 main technical factors and structure of the 3WDZ6 type cotton top cutter was introduced. The characteristics of the mechanical system were presented, the research on automatic and closed-loop control system, which adjusted according to cotton height were also done. The cotton height experiment was tested using laser and ultrasonic sensors; the experimental results showed that the measuring error rate of the laser sensor was smaller than that of the ultrasonic sensor. The control and mechanical systems would meet the cotton top cutting agricultural requirements.
Number of references: 9
Main heading: Cotton
Controlled terms: Cutting - Electric drives - Mechanical engineering - Mechanics - Ultrasonic sensors - Ultrasonics
Uncontrolled terms: Imitating the single cotton - Laser sensor - Measuring errors - Mechanical systems - Technical factors
Classification code: 604.1 Metal Cutting - 608 Mechanical Engineering, General - 705 Electric Generators and Motors - 753 Ultrasonics and Applications - 819.1 Natural Fibers - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.018
Database: Compendex 44. Accession number: 20104313334989
Title: Optimization of improvers for noodles production using response surface methodology
Authors: Zheng, Zhi1 ; Zhou, Huixi1 ; Luo, Shuizhong1 ; Zhong, Xiyang1 ; Pan, Lijun1 ; Jiang, Shaotong1
Author affiliation: 1 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: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 203-207
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The effects of noodle improvers, composed of guar gum, starch phosphate ester, and trimeric sodium phosphate, on the toughness and springiness of the noodle were investigated with response surface methodology. The mathematical model was obtained and the optimum ratio of noodle improvers was: guar gum 0.7%, starch phosphate ester 5.50%, trimeric sodium phosphate 0.15%. Under these conditions, the toughness and springiness of the noodle were 790.71g·mm and 38.18g, respectively.
Number of references: 11
Main heading: Surface properties
Controlled terms: Esterification - Esters - Mathematical models - Phosphates - Sodium - Sodium compounds - Starch
Uncontrolled terms: Guar gums - Noodle - Response Surface Methodology - Starch phosphate ester - Trimeric sodium phosphate
Classification code: 549.1 Alkali Metals - 802.2 Chemical Reactions - 804.1 Organic Compounds - 921 Mathematics - 951 Materials Science
DOI: 10.3969/j.issn.1000-1298.2010.Supp.044
Database: Compendex 45. Accession number: 20104313334955
Title: Research on the hydraulic properties of SDI emitter based on fractal theory
Authors: Chen, Yan1 ; Bai, Dan1 ; Ren, Changjiang1 ; Zhou, Wen1
Author affiliation: 1 Key Lab of Northwest Water Resources and Environment Ecology, Xi'an University of Technology, Xi'an 710048, China
Corresponding author: Chen, Y. (chenyan521131420@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 47-52
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 study the effect of work pressure and soil physical properties on the flow rate of the subsurface drip irrigation(SDI) emitter, the soil fractal feature under different gradations was analyzed using fractal theory. Uniform design method was applied and the following four factors were considered in the experiment: the fractal dimension of the soil particle-weight, work pressure of the emitter, soil bulk density, and initial soil water content. The results showed that the fractal dimension was significantly influenced by the soil clay content; the fractal dimension increased as the soil clay content increased. When the PLASSIM SDI emitter discharge was increased, the soil fractal dimension decreased; the finer the soil texture was, the smaller the emitter discharge became. By taking soil fractal dimension factor into account, the experimental empirical formula for estimating the SDI emitter discharge has preferable universality.
Number of references: 21
Main heading: Fractal dimension
Controlled terms: Partial discharges - Pressure effects - Soil moisture - Subirrigation - Underwater soils - Water content
Uncontrolled terms: Empirical formulas - Fractal feature - Fractal theory - Hydraulic properties - Soil bulk density - Soil clay content - Soil particles - Soil physical property - Soil textures - Soil water content - Subsurface drip irrigation - Uniform design method - Work pressures
Classification code: 444 Water Resources - 483.1 Soils and Soil Mechanics - 701.1 Electricity: Basic Concepts and Phenomena - 821.3 Agricultural Methods - 921 Mathematics - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.010
Database: Compendex 46. Accession number: 20104313334967
Title: Design and experiment on round baler with revolute steel roller
Authors: Wang, Chunguang1 ; Ao, Encha1 ; Xing, Jihui1 ; Zhai, Gaixia1 ; He, Gang1
Author affiliation: 1 Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010020, China
Corresponding author: Wang, C. (wchga0821@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 103-106 102
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: A round baler with revolute steel roller was designed. Based on the structure of the machine, the operating process and structural design of the key components of the machine were described simply. The baler was composed of driven system, drafting device, pickup, feeder, bale chamber, tying mechanism, hydraulic system and bale discharger, and so on. The movement parameters for the round baler were designed and computed. The motion trajectory of the feeder was described and the characteristics of the spiral-type bale chamber were analyzed simultaneously. In order to test the reliability and adaptability of the round baler, performance experiments and production evaluation were carried out under different operation conditions.
Number of references: 5
Main heading: Machine design
Controlled terms: Experiments - Feeding - Hydraulic equipment - Hydraulic machinery - Rollers (machine components) - Structural design
Uncontrolled terms: Driven system - Hydraulic system - Key component - Motion trajectories - Operating process - Operation conditions - Performance experiment - Production evaluation - Revolute steel roller - Round baler - Steel roller
Classification code: 408.1 Structural Design, General - 601 Mechanical Design - 601.2 Machine Components - 632.2 Hydraulic Equipment and Machinery - 691.2 Materials Handling Methods - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.Supp.022
Database: Compendex 47. Accession number: 20104313334996
Title: ARM and DSP-based bivariable fertilizing control system design and implementation
Authors: Liu, Chengliang1 ; Yuan, Jin1 ; Liu, Jianzheng2 ; Li, Changxing2 ; Zhou, Zongliang2 ; Gu, Yuxue1
Author affiliation: 1 School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2 Shanghai Research Institute of Agricultural Machinery, Shanghai 201106, China
Corresponding author: Liu, C. (chlliu@sjtu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 233-238
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 bivariable control system that combined GPS and GPRS was designed as the variable rate fertilizer embedded solutions, and the information platform based on ARM and DSP dual-CPU architecture was developed. Based on ARM9 and WinCE support the graphical user interface and touch operation, the host system was able to achieve information input and reflect the real-time operating status of the fertilization and seed production process. Based on DSP/BIOS real-time operating system, the slave system could implement the opening and revolution motor servo control of fertilizing and seeding. The system hardware and software structure, which has good scalability and real-time flexibility, was depicted in detail. The test results showed that the system could achieve fast and accurate fertilizing and seeding precision delivery.
Number of references: 6
Main heading: Real variables
Controlled terms: Computer operating systems - Control theory - Digital signal processors - Fertilizers - Graphical user interfaces - Real time control - Seed
Uncontrolled terms: ARM - Control system designs - CPU architecture - DSP - DSP-based - DSP/BIOS - Information platform - Precision delivery - Real time operating system - Seed production - Servo control - Slave systems - System hardware - Test results - Variable fertilizer - Variable rate
Classification code: 921 Mathematics - 821.4 Agricultural Products - 804 Chemical Products Generally - 732 Control Devices - 731.1 Control Systems - 731 Automatic Control Principles and Applications - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment
DOI: 10.3969/j.issn.1000-1298.2010.Supp.051
Database: Compendex 48. Accession number: 20104313334979
Title: Design of degradable plant fiber tableware trim cutter
Authors: Qiu, Zaoyang1 ; Li, Shujun1 ; Yang, Bingnan1 ; Jing, Quanrong1 ; Liu, Tianshu1 ; Zhou, Shuhui1
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Li, S. (lisj@caams.org.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 154-159
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 automatic edge trim cutter machine of plant fiber tableware was studied based on designing parameters, technology route and key structure design calculation. The machine was designed with five forming stations driven by air cylinder, planetary gear structure, flexible profile modeling blade edge devices. The edge removing process was done during the turntable revolution and the product's self-rotation. Pro/E software was used to simulate the 3-D entities of trim cutter machine. The working cycle was automatic closed-loop feedback controlled and validated in order to verify the accuracy of the machine. The results show that the trim cutter can be used in plant fiber tableware industry.
Number of references: 14
Main heading: Machine design
Controlled terms: Textile fibers
Uncontrolled terms: Air cylinder - Closed-loop feedback - Dry pressing - Planetary Gears - Plant fibers - Pro/E software - Structure design - Tableware industries - Trim cutter - Working cycle
Classification code: 601 Mechanical Design - 819.2 Synthetic Fibers
DOI: 10.3969/j.issn.1000-1298.2010.Supp.034
Database: Compendex 49. Accession number: 20104313334990
Title: Effect of pretreatment on ultra-structure of rapeseed
Authors: Li, Shaohua1 ; Li, Shujun1 ; Ren, Jiajia1 ; Li, Ziming1 ; Xiang, Hai1 ; Guo, Jinqiang2
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
2 Xinshi Oil Stock Limited Company, Huzhou 313201, China
Corresponding author: Li, S. (lishaohua73@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 208-211
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 pretreatment process on the micro-structure of rapeseed and the presence state of rapeseed oil in cells were researched. The cell ultra-structures of rapeseed after flaking, cooking, expanding and pressing were analyzed by transmission electron microscope (TEM). Rapeseed cell was extruded obviously by flaking process and it turned from circle shape to ellipse shape. After flaking the cell wall was partly broken and a few lipid droplets were gathered together. A few cell wall was destroyed and some lipid droplets came closely and agglomerated into larger particles by cooking. Cell wall was destroyed totally and the cytoplasm was extruded out by expanding. Most lipid droplets came close enough to agglomerate into larger particles and fully leaked out by expanding. The shape and structure of rapeseed cell were devastated by pressing. It was showed that expanding was more suitable for broking the structure of the cell than cooking and it would be the best way for oil making.
Number of references: 13
Main heading: Cytology
Controlled terms: Cells - Drop formation - Transmission electron microscopy - Vegetable oils
Uncontrolled terms: Cell walls - In-cell - Lipid droplets - Pre-Treatment - Pretreatment process - Rapeseed - Rapeseed oil - Transmission electron microscope - Ultra structure
Classification code: 461.2 Biological Materials and Tissue Engineering - 741.3 Optical Devices and Systems - 804.1 Organic Compounds - 931.2 Physical Properties of Gases, Liquids and Solids
DOI: 10.3969/j.issn.1000-1298.2010.Supp.045
Database: Compendex 50. Accession number: 20104313335000
Title: Image segmentation technology for field parcel
Authors: Chen, Yizhe1 ; Tang, Xiuying1 ; Peng, Yankun1 ; Xu, Yang1 ; Li, Cuiling1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Tang, X. (txying@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 253-256
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: Field parcel images consist of multiple target regions where different field objects are always interfered each other. As a result, segmentation and feature extraction of the field parcel image are very difficult. Aiming at that, two algorithms based on edge and region were used to process field parcel images photographed by an aerial camera. The results showed that the algorithm of image edge segmentation based on differential operators could effectively detect the edge of the field parcel, but enlarged the noise of image; the algorithm of image region segmentation based on threshold could effectively remove the noise from field parcel image.
Number of references: 10
Main heading: Image segmentation
Controlled terms: Algorithms - Edge detection - Feature extraction - Mathematical operators
Uncontrolled terms: Aerial camera - Differential operators - Edge segmentation - Field parcel - Image edge - Image regions - Multiple targets - Region segmentation
Classification code: 716 Telecommunication; Radar, Radio and Television - 741.1 Light/Optics - 921 Mathematics
DOI: 10.3969/j.issn.1000-1298.2010.Supp.055
Database: Compendex 51. Accession number: 20104313334970
Title: Dual fluidized bed biomass decoupled gasification experiments
Authors: Chu, Leizhe1 ; Fan, Xiaoxu1 ; Xiao, Qi1 ; Guo, Dongyan1 ; Xian, Jianwei2
Author affiliation: 1 Key Laboratory for Biomass Gasification Technology of Shandong Province, Ji'nan 250014, China
2 School of Energy and Power Engineering, North China Electric Power University, Baoding 071003, China
Corresponding author: Chu, L. (clzkx@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 117-120
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: Energy balance analysis and calculations were made for two common kinds of biomass. It was proved that the heat of fixed carbon combustion was sufficient for volatile pyrolysis. The pressure distribution for cold cases in the dual fluidized bed was obtained by cold experiments. Finally, during the experiments of pellet gasification in dual fluidized bed, combustion conditions were able to be smoothly switched to gasification conditions with stable operation, and the calorific value of gas was able to reach 7MJ/Nm3.
Number of references: 10
Main heading: Fluidized bed combustion
Controlled terms: Biomass - Experiments - Fluidization - Fluidized beds - Gas generators - Gasification - Pyrolysis
Uncontrolled terms: Combustion condition - Decoupled gasification - Energy balance analysis - Fixed carbons - Stable operation
Classification code: 521.1 Fuel Combustion - 521.2 Combustors - 522 Gas Fuels - 525.1 Energy Resources and Renewable Energy Issues - 802 Chemical Apparatus and Plants; Unit Operations; Unit Processes - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.Supp.025
Database: Compendex 52. Accession number: 20104313334984
Title: Correlation between dielectric constant and drying characteristics of apple
Authors: Wang, Ying1 ; Guo, Yuming1
Author affiliation: 1 College of Engineering, Shanxi Agricultural University, Taigu 030801, China
Corresponding author: Guo, Y. (guoyuming99@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 182-185 190
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 simple method for online measurement of drying process of fruits and vegetables was explored. Relative permittivities of an apple sample and a mixed sample composed of air and apple were measured by LCR meter and matching electrode during a hot air drying process. Then, relation equations between permittivity and relative water content, as well as between permittivity and drying rate, were respectively established. It was found that relative permittivities and drying characteristics were significantly correlated, and correlations between the dielectric constant and the drying characteristics of the mixture were stronger than that of only the apple sample. Conclusions indicated that detecting the moisture content of fruits and vegetables could be more readily achieved with measuring mixed samples instead of only the material itself.
Number of references: 11
Main heading: Drying
Controlled terms: Curing - Fruits - Permittivity - Plants (botany) - Vegetables - Water content
Uncontrolled terms: Dielectric constants - Drying characteristics - Drying process - Drying rates - Hot air drying - LCR meters - Mixed samples - Moisture contents - On-line measurement - Relative dielectric constant - Relative permittivity - Relative water content - SIMPLE method
Classification code: 444 Water Resources - 461.9 Biology - 642.1 Process Heating - 701 Electricity and Magnetism - 815.1 Polymeric Materials - 821.4 Agricultural Products
DOI: 10.3969/j.issn.1000-1298.2010.Supp.039
Database: Compendex 53. Accession number: 20104313334982
Title: Degradation kinetics of catalpol in Rehmanniae during vacuum infrared radiation drying
Authors: Zhu, Wenxue1 ; Liu, Yunhong1, 2 ; Ma, Haile2
Author affiliation: 1 College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471003, China
2 School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Zhu, W. (zwx@mail.haust.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 172-177 256
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: Rehmanniae was chosen as the experimental material. The extraction method of catalpol in Rehmanniae was achieved via supersonic treatment followed by methanol extraction, and extraction time was decided thereafter. The results showed that degradation kinetics of catalpol in Rehmanniae during vacuum infrared radiation drying did not follow zero order or first order kinetics regulations. The degradation kinetics model of catalpol in Rehmanniae was established through introducing a parameter gT related to the radiation heater's temperature, assuming that the parameters of degradation rate k agreed with Arrhenius equation. The test result showed that the model was a good fit for the experimental data.
Number of references: 12
Main heading: Infrared drying
Controlled terms: Degradation - Extraction - Infrared radiation - Laws and legislation - Methanol - Radiometers - Vacuum
Uncontrolled terms: Arrhenius equation - Catalpol - Degradation kinetics - Degradation kinetics model - Degradation rate - Experimental data - Experimental materials - Extraction method - Extraction time - First order kinetics - Rehmanniae - Supersonic treatment - Test results - Zero order
Classification code: 971 Social Sciences - 944.7 Radiation Measuring Instruments - 804.1 Organic Compounds - 802.3 Chemical Operations - 802.2 Chemical Reactions - 741.1 Light/Optics - 633 Vacuum Technology
DOI: 10.3969/j.issn.1000-1298.2010.Supp.037
Database: Compendex 54. Accession number: 20104313334978
Title: Advances in synthesis of biodiesel catalysts by heterogeneous catalyst promoted by microwave
Authors: Jiang, Bo1 ; Zhang, Xiaodong1 ; Sun, Li1 ; Xu, Min1
Author affiliation: 1 Key Laboratory for Biomass Gasification Technology of Shandong Province, Ji'nan 250014, China
Corresponding author: Jiang, B. (jiangb@sderi.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 149-153 252
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 preparation of biodiesel using microwave has received wide attention recently, and is summarized in terms of heterogeneous acid and basic catalysis transesterification. The heterogeneous catalyst process of biodiesel promoted by microwave has the advantages of rapid reaction, energy saving and environmental amity, and the resulting product is easy to separate from byproduct. Solid acid and base were selected as catalysts in the research. The transesterification reaction was finished in 10-30 min when promoted by microwave, and the conversion of transesterification reaction was comparable to or higher than that by traditional heating method. These catalysts can be reused several times.
Number of references: 44
Main heading: Catalysts
Controlled terms: Acids - Biodiesel - Microwaves - Synthesis (chemical) - Synthetic fuels - Transesterification
Uncontrolled terms: Basic catalysis - Energy saving - Heterogeneous catalyst - Rapid reactions - Solid acid - Traditional heating - Transesterification reaction
Classification code: 523 Liquid Fuels - 711 Electromagnetic Waves - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
DOI: 10.3969/j.issn.1000-1298.2010.Supp.033
Database: Compendex 55. Accession number: 20104313334995
Title: Wearing characteristics and self-sharpening enhanced treatment of feed grinder hammer
Authors: Shen, Qingtai1 ; Jin, Min1 ; Chi, Shaoying1 ; Zhang, Zhenghong1
Author affiliation: 1 College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
Corresponding author: Shen, Q. (jdsqt@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 229-232
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 analysis of feed grinder working principles and the influence of hammer form changing on the working efficiency during the hammer wear passivating process, the hammer self-sharpening enhanced process was put forward. The gas carburizing process was used to strengthen the two sides of the hammer, and the seepage treatment was used to strengthen the side surface and axle hole of the hammer. With the appropriate heat treatment, the metallographic structures of the two edges and the middle part were different. As a result, the hardness of the hammer edges was much greater than that of the middle part. And the production test confirmed that the section corner could not be formed during the hammer's working process. The frontal attack on materials and edges cutting of the hammer were maintained.
Number of references: 11
Main heading: Hammers
Controlled terms: Carburizing - Grinding (machining) - Grinding machines - Grinding mills - Tools
Uncontrolled terms: Gas carburizing - Grinder - Metallographic structure - Production test - Self-sharpening - Wearing characteristics - Working efficiency - Working principles - Working process
Classification code: 537.1 Heat Treatment Processes - 603 Machine Tools - 603.1 Machine Tools, General - 605 Small Tools and Hardware - 605.2 Small Tools, Unpowered - 606.2 Abrasive Devices and Processes
DOI: 10.3969/j.issn.1000-1298.2010.Supp.050
Database: Compendex 56. Accession number: 20104313334968
Title: Pickup parameters design of square baler
Authors: Wang, Zhenhua1 ; Wang, Decheng2 ; Liu, Guilin1 ; Dong, Zhongyi1 ; Zhai, Gaixia1
Author affiliation: 1 Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
2 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Wang, Z. (wzhh2008@yeah.net)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 107-109
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 breadth of square baler pickup and roller rotating speed were designed. Simultaneously, contrast analysis on movement parameters of three sets of spring-tooth and four sets of spring tooth and the leakage ratio was carried out in the paper. The results indicated that leakage ratio of three sets of spring-tooth was less than 2% while pasture could avoid being piled up at ground and missed pick-up, and leakage ratio of four sets of spring-tooth was less than 1%.
Number of references: 9
Main heading: Pickups
Controlled terms: Agriculture - Design
Uncontrolled terms: Leakage ratio - Parameters design - Rotating speed - Spring-tooth - Square baler
Classification code: 408 Structural Design - 752.3.1 Sound Reproduction Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI: 10.3969/j.issn.1000-1298.2010.Supp.023
Database: Compendex 57. Accession number: 20104313334966
Title: Design and experiment of self-propelled cotton-stalk combine harvester
Authors: Dong, Shiping1 ; Wang, Fengde1 ; Qiu, Zaoyang1 ; Sun, Yufeng1
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Dong, S. (dsp2008@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 99-102
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In view of the present situation regarding cotton-stalk harvest in the Yangtze valley and the Huanghe valley, a collecting and adaptive spring holding feed mechanism for interweave cotton-stalks was developed. This combine harvester integrated pick-up, cutting, collection loading and unloading. The results indicated that a feed quantity of 1.52 kg/s, average cut length of cotton-stalk of 92.11%, and average throughput of 0.94 hm2/h could be achieved by the experiment, which satisfied the automatic request of cotton-stalk combine harvester.
Number of references: 7
Main heading: Harvesters
Controlled terms: Cotton - Landforms - Pickups - Unloading
Uncontrolled terms: Average throughput - Combine harvesters - Feed mechanisms - Loading and unloading - Present situation - Transportation equipment
Classification code: 481.1 Geology - 674.1 Small Marine Craft - 752.3.1 Sound Reproduction Equipment - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products
DOI: 10.3969/j.issn.1000-1298.2010.Supp.021
Database: Compendex 58. Accession number: 20104313334947
Title: Applicability of turbulence models in numerical simulation of double suction centrifugal pump
Authors: Liu, Meiqing1 ; Li, Qiuwei1 ; Bai, Yaohua1 ; Liu, Zhiyong1 ; Lin, Qi1
Author affiliation: 1 School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
Corresponding author: Liu, M. (liumq@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 6-9 26
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to analyze the effects of turbulence models on the numerical solution of double suction centrifugal pump through the use of Fluent software, a pump applied in domestic projects was chosen as a study object. 3-D steady numerical simulations were conducted by four different turbulence models, namely, the standard k-Ε model, RNG k-Ε model, realizable k-Ε model and Reynolds stress equation. The results of steady numerical simulations were then used as initial values, and 3-D unsteady numerical simulations were conducted by the large eddy simulation(LES) method. Comparison of the numerical results with the experimental ones showed that in the situation of steady numerical simulations, four turbulence models could all be used in numerical simulation of double suction centrifugal pump, but the precisions of results were different. From this perspective, LES method will obtain much more accurate results.
Number of references: 7
Main heading: Three dimensional
Controlled terms: Atmospheric boundary layer - Centrifugal pumps - Computational fluid dynamics - Hydraulic machinery - Pumping plants - Pumps - Reynolds number - Turbulence models
Uncontrolled terms: CFD - FLUENT software - Initial values - Large Eddy simulation methods - Numerical results - Numerical simulation - Numerical solution - Reynolds stress equation
Classification code: 921.6 Numerical Methods - 902.1 Engineering Graphics - 632.2 Hydraulic Equipment and Machinery - 631.1 Fluid Flow, General - 618.2 Pumps - 446 Waterworks - 443.1 Atmospheric Properties
DOI: 10.3969/j.issn.1000-1298.2010.Supp.002
Database: Compendex 59. Accession number: 20104313334950
Title: Numerical simulation on pressure fluctuations and radial hydraulic forces in centrifugal pump with step-tongue
Authors: Zhu, Lei1 ; Yuan, Shouqi1 ; Yuan, Jianping1 ; Pei, Ji1
Author affiliation: 1 Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Yuan, S. (shouqiy@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: SUPPL. 1
Issue date: September 2010
Publication year: 2010
Pages: 21-26
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 the shear stress transport turbulent model (SST), the 3-D unsteady numerical method was applied to simulate the flow of the centrifugal pump with the common-tongue and step-tongue. Various pressure fluctuations, radial hydraulic force on the impeller, and volute were obtained for the rotor-stator interaction. The analysis results indicated that the blade-passing frequency dominated the pressure fluctuation, the radial hydraulic force on the impeller and volute, which had periodic fluctuations. The amplitudes of the pressure fluctuation on the inlet and outlet detecting points of the pump were smaller with step-tongue than with common-tongue; the high-frequency components were also fewer. The radial hydraulic force on the volute of the pump with the step-tongue and its amplitude were also smaller than with the common-tongue. The distribution of radial hydraulic force on the impeller vector coordinates were almost circular using common-tongue and step-tongue.
Number of references: 10
Main heading: Pumps
Controlled terms: Axial flow - Centrifugal pumps - Hydraulic machinery - Hydraulics - Mathematical models - Pumping plants - Stators - Three dimensional
Uncontrolled terms: Numerical simulation - Pressure fluctuation - Radial hydraulic force - Rotor-stator interaction - Step-tongue
Classification code: 902.1 Engineering Graphics - 705.1 Electric Machinery, General - 632.2 Hydraulic Equipment and Machinery - 921 Mathematics - 632.1 Hydraulics - 618.2 Pumps - 446 Waterworks - 631.1 Fluid Flow, General
DOI: 10.3969/j.issn.1000-1298.2010.Supp.005
Database: Compendex
|
