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2011年第42卷第11期共收录43篇
1. Accession number:20115014603071
  Title:Research progress of nanocrystalline cellulose prepared from crops and agricultural residues
  Authors:Song, Xiaozhou1 ; Wu, Qinglin2 ; Fu, Feng3 ; Guo, Kangquan1 
  Author affiliation:1  College of Mechanical and Electronic Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
                 2  School of Renewable Natural Resources, Louisiana State University, Baton Rouge 70803, United States
                 3  Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
  Corresponding author:Guo, K. (jdgkq@nwsuaf.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:106-112
  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 nanocrystalline cellulose using crops and agricultural residues has attracted wide attention recently. The primary composition of agricultural fibers was introduced. Research progress of nanocrystalline cellulose prepared from crops and agricultural residues was reviewed in terms of raw material kinds, preparation method, properties and application of nanocrystalline cellulose. The main problems in terms of dimensional measurement, surface modification, preparation technology and application were analyzed. The corresponding solution ways were put forward. The preparation of nanocrystalline cellulose is a high value-added application for crops and agricultural residues.
  Number of references:45
  Main heading:Cellulose
  Controlled terms:Agricultural wastes  -  Cellulose derivatives  -  Crops  -  Reviews
  Uncontrolled terms:Agricultural fibers  -  Corresponding solutions  -  Dimensional measurements  -  Nanocrystalline cellulose  -  Preparation method  -  Preparation technology  -  Research progress  -  Value added applications
  Classification code:811.3 Cellulose, Lignin and Derivatives  -  821.4 Agricultural Products  -  821.5 Agricultural Wastes  -  903.2 Information Dissemination
  Database:Compendex

2. Accession number:20115014603091
  Title:Design method of eccentric-high order elliptical bevel gear pair and analysis of its transmission characteristics
  Authors:Lin, Chao1 ; Gong, Hai1 ; Hou, Yujie1, 2 ; Nie, Ling1 ; Zeng, Qinglong1 
  Author affiliation:1  State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
                 2  86 Detachment 96263 PLA Troops of PLA, Luoyang 471500, China
  Corresponding author:Lin, C. (linchao@cqu.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:214-221
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Base on the space engagement theory, a design method of eccentric-high order elliptical bevel gear pair was presented, the mathematical model of eccentric-high order elliptical bevel gear drive was established, pitch cone and spherical pitch curve of the eccentric elliptical bevel gear and the high order elliptical bevel gear were derived; the position of the cutter in the space during tooth profile of eccentric-high order elliptical bevel gear was generated analyzed. Secondary development based on Solidworks (API) and VB, which made the pseudo-entity and assembly model of eccentric-high order elliptical bevel gear pair was obtained; and then the transmission characteristics of eccentric-high order elliptical bevel gear pair was analyzed, the change laws of eccentric-high order elliptical bevel gear pair, angular velocity and angular acceleration of driven wheel during the transmission were acquired.
  Number of references:9
  Main heading:Bevel gears
  Controlled terms:Design  -  Mathematical models
  Uncontrolled terms:Angular acceleration  -  Assembly model  -  Design method  -  Elliptical bevel gears  -  Elliptical gears  -  High order  -  Pitch curve  -  Secondary development  -  SolidWorks  -  Tooth profile   -  Transmission characteristics
  Classification code:408 Structural Design  -  601.2 Machine Components  -  921 Mathematics
  Database:Compendex

3. Accession number:20115014603087
  Title:Parameter optimization for spherical parallel mechanism bionic eye based on differential evolution
  Authors:Li, Shuping1, 2 ; Xie, Shaorong1 ; Cheng, Jun2 ; Li, Hengyu1 ; Li, Chao1 ; Luo, Jun1 
  Author affiliation:1  School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China
                 2   School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China
  Corresponding author:Xie, S. (srxie@shu.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:189-194
  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:The target working space of bionic eye was firstly determined. The worst dexterity for bionic eye with the maximum condition number of Jacobian matrix was defined. Then, a differential evolution (DE) algorithm was used to optimize the maximum of the worst dexterity index. Dynamic scaling factor was determined according to the overcome premature evolution and enhance the probability of finding global optimum. Reasonable structural parameters were chosen in the case of satisfying the special requirements of bionic eye structure and making arbitrary posture dexterity of target working space better. Finally, the experimental results show that bionic eye with the optimized parameters are good coinciding with the design requirements.
  Number of references:15
  Main heading:Bionics
  Controlled terms:Evolutionary algorithms  -  Jacobian matrices  -  Mechanisms  -  Number theory  -  Structural optimization
  Uncontrolled terms:Condition numbers  -  Design requirements  -  Dexterity  -  Differential evolution  -  Differential evolution algorithms  -  Dynamic scaling  -  Global optimum  -  Optimized parameter  -  Parameter optimization  -  Spherical parallel mechanism   -  Structural parameter  -  Working space
  Classification code:601.3 Mechanisms  -  731.1 Control Systems  -  921 Mathematics
  Database:Compendex

4. Accession number:20115014603064
  Title:Effects of EN-1 soil stabilizer on slope runoff hydraulic characteristics of Pisha sandstone stabilized soil
  Authors:Su, Tao1 ; Zhang, Xingchang2 
  Author affiliation:1  College of Resources and Environment, Northwest A and F University, Yangling, Shaanxi 712100, China
2  Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
  Corresponding author:Zhang, X. (zhangxc@ms.iswc.ac.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:68-75
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to study erosion rule of engineering slope runoff and provide scientific and theoretical basis for control of water and soil loss of slope in Pisha sandstone region, the hydrodynamic characteristics of slope runoff under the different EN-1 soil stabilizer contents, curing ages and compaction degrees treated with soil stabilizer were studied by using indoor runoff scouring experiment. The results showed that flow velocity of slope runoff of Pisha sandstone stabilized soil increased with the increase of soil stabilizer contents, curing ages and compaction degrees under the soil stabilizer contents, curing ages and compaction degrees in this experiment and it had a fluctuant and decreased tendency with scouring time. The Reynolds number (Re) of slope runoff decreased with the increase of soil stabilizer contents, curing ages and compaction degrees and it had a fluctuant and increased tendency with scouring time. The Froude number (Fr) of slope flow runoff had the opposite trends. The flow regimes were turbulent flow and subcritical flow when scouring proceeded to the later period at smaller compaction degrees. The flow regimes were all laminar flow and supercritical flow at the other treatments. The Darcy-Weisbach drag coefficient (f) of slope runoff decreased with the increase of soil stabilizer contents, curing ages and compaction degrees, and had a positive correlation with sediment transport rate.
  Number of references:23
  Main heading:Soils
  Controlled terms:Anoxic sediments  -  Compaction  -  Curing  -  Erosion  -  Experiments  -  Hydrodynamics  -  Laminar flow  -  Reynolds number  -  Runoff  -  Sandstone   -  Sediment transport  -  Soil conditioners
  Uncontrolled terms:Compaction degree  -  Curing age  -  Flow regimes  -  Hydraulic characteristic  -  Hydrodynamic characteristics  -  Positive correlations  -  Scouring experiment  -  Scouring experiments  -  Sediment transport rate  -  Slope erosion   -  Slope flow  -  Slope runoff  -  Soil loss  -  Soil stabilizers  -  Stabilized soils  -  Subcritical flow  -  Supercritical flow  -  Theoretical basis
  Classification code:815.1 Polymeric Materials  -  631 Fluid Flow  -  536.1 Powder Metallurgy Operations  -  901.3 Engineering Research  -  483.1 Soils and Soil Mechanics  -  482.2 Minerals  -  444.1 Surface Water  -  483 Soil Mechanics and Foundations
Database:Compendex

5. Accession number:20115014603086
  Title:Dynamic reconstructing of the product design process in knowledge integrated environment
  Authors:Shi, Haoran1 ; Wang, Weirui1 ; Wu, Can2 ; Jiang, Wei1 
  Author affiliation:1  State Key Laboratory of CAD and CG, Zhejiang University, Hangzhou 310027, China
                 2 School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
  Corresponding author:Wang, W. (wwrzju@126.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:183-188
  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 dynamic process management approach based on conditional design structural matrix was proposed. Considering the possibility of the conditional constraints during the design process, the conditional constraint model was constructed based on the references of the design knowledge and condition parameters, the conditional knowledge dimension was brought into the traditional DSM model, and then the 3D conditional DSM model was obtained. Using the dynamical superimposed conditional DSM view in the model mentioned above, the consequence of the reconstruction in the design process could be reconstructed again and again. The approach presented was finally used in the general variant design system supporting the vehicle CVJ shafts design process modeling, an example was provided and the results demonstrated the higher efficiency and automation degree of the approach presented.
  Number of references:8
  Main heading:Product design
  Controlled terms:Three dimensional
  Uncontrolled terms:Condition constraint  -  Condition parameters  -  Conditional constraints  -  Design knowledge  -  Design process  -  DSM model  -  Dynamic process management  -  Higher efficiency  -  Integrated environment  -  Structural matrix   -  Variant design
  Classification code:902.1 Engineering Graphics  -  913.1 Production Engineering
  Database:Compendex

6. Accession number:20115014603085
  Title:Portable and real-time device for measuring concentration of pesticides used with enzyme sensing electrode
  Authors:Chen, Zhigang1, 2 ; Zhang, Qijia1 ; Qiu, Baijing1 ; Wang, Kun1 ; Wu, Chundu3 
  Author affiliation:1  Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
                 2  School of the Environment, Jiangsu University, Zhenjiang 212013, China
                 3  Yangzhou Vocational College of Environment and Resources, Yangzhou 225127, China
  Corresponding author:Qiu, B. (qbj@ujs.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:178-182
  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 kind of portable device for measuring concentration of pesticides used with enzyme sensor was designed. It included screen-printed enzyme electrode, signal conditioning circuit and MCU C8051F040. The preparation of enzyme electrode made the coated resistance of charge transfer reduced, charge transfer accelerated; and a reliable liner relationship between the inhibition of enzyme and log [carbaryl] was obtained from 5 ng/mL to 2 μg/mL, with the detection limitation of 1.7 ng/mL. Response time of the device was less than 161 s. The size of the device was small and the power was supported by battery. It provided a portable device for rapid measuring and spotty concentration of pesticide in μg/L level.
  Number of references:18
  Main heading:Enzyme inhibition
  Controlled terms:Agricultural chemicals  -  Charge transfer  -  Concentration (process)  -  Electrodes  -  Enzyme electrodes  -  Enzyme sensors  -  Pesticides  -  Portable equipment  -  Sensors
  Uncontrolled terms:Carbaryl  -  Measuring device  -  Portable device  -  Screen-printed  -  Sensing electrode  -  Signal conditioning circuits
  Classification code:803 Chemical Agents and Basic Industrial Chemicals  -  802.3 Chemical Operations  -  802.2 Chemical Reactions  -  801.2 Biochemistry  -  804 Chemical Products Generally  -  801 Chemistry  -  704.1 Electric Components  -  461.8 Biotechnology  -  461.2 Biological Materials and Tissue Engineering  -  704.2 Electric Equipment
  Database:Compendex

7. Accession number:20115014603066
  Title:Salt-out particle flow field in a vortex pump by PIV measurement
  Authors:Gao, Bo1 ; Yang, Minguan1 ; Feng, Lang1 ; Yu, Xuefeng2 
  Author affiliation:1  School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
                 2  WILO China Co. Ltd., Beijing 101300, China
  Corresponding author:Yang, M. (mgyang@ujs.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:81-84
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to understand the flow pattern of salt-out particles in a vortex pump, PIV was adopted to measure the particle flow field. The quasi three dimensions velocity field of the particles was obtained. The particle flow characteristics were primarily known under several running conditions. It is indicated that velocity distributions are obviously different on various axial sections in the impeller. The forced and free vortexes were both existed in the vaneless volute. When the pump flow rate increased, particle relative flow velocity increased at the impeller inlet, as well as the relative flow angle at the impeller outlet. Near the small radius area of vaneless volute, radial velocity component increased with the flow rate changed. There is also portrait vortex of particle flow, and the vortex center is located around the centre of impeller flow passage. It is almost no change with the flow rate.
  Number of references:7
  Main heading:Vortex flow
  Controlled terms:Flow fields  -  Flow rate  -  Impellers  -  Inlet flow  -  Pumps  -  Velocity  -  Velocity distribution  -  Velocity measurement
  Uncontrolled terms:Axial sections  -  Impeller flow  -  Impeller inlets  -  Impeller outlet  -  Particle flow  -  Particle image velocimetries  -  PIV measurements  -  Pump flow rate  -  Radial velocity  -  Relative flow   -  Running conditions  -  Salt-out  -  Three dimensions  -  Velocity field  -  Vortex centers  -  Vortex pumps
  Classification code:943.2 Mechanical Variables Measurements  -  931.3 Atomic and Molecular Physics  -  931.1 Mechanics  -  943.3 Special Purpose Instruments  -  631.1 Fluid Flow, General  -  618.2 Pumps  -  601.2 Machine Components  -  631 Fluid Flow
  Database:Compendex

8. Accession number:20115014603075
  Title:Optimization on the technology of ultrasound-phosphorylation soybean proteins by Box-Behnken model
  Authors:Wang, Xibo1 ; Chi, Yujie1 
  Author affiliation:1  College of Food Science, Northeast Agricultural University, Harbin 150030, China
  Corresponding author:Chi, Y. (yjchi@126.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:130-134
  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:Ultrasound-phosphorylation was used to modify soybean proteins to improve the emulsification property. Based on the single factor experiments, technology was established and optimized by central composite design theory of Box-Behnken. The response model was valid in analyzing and predicting the extent of EAI due to its higher fitting degree and less experimental error. The effect on emulsifying properties of soybean proteins modified by ultrasound-chemistry phosphorylation (UP-SP) were analyzed, and the optimized conditions of preparation of UP-SP were as follows: STP 9.65%, ultrasound power 490 W, and time of reaction 34 min, then the emulsifying activity and emulsion stability of UP-SP, were 70.8 and 30.2 min, 2.18 and 1.57 fold against control experiment respectively. The results show that ultrasound-phosphorylation is an efficient method to improve the emulsification properties of soybean proteins.
  Number of references:28
  Main heading:Emulsification
  Controlled terms:Chemical analysis  -  Experiments  -  Optimization  -  Phosphorylation  -  Proteins  -  Tungsten  -  Ultrasonics
  Uncontrolled terms:Box-Behnken  -  Central composite designs  -  Control experiments  -  Emulsifying activity  -  Emulsifying property  -  Emulsion stability  -  Experimental errors  -  Fitting degree  -  Optimized conditions  -  Response model   -  Soybean proteins  -  Technology optimization
  Classification code:921.5 Optimization Techniques  -  901.3 Engineering Research  -  804.1 Organic Compounds  -  804 Chemical Products Generally  -  802.3 Chemical Operations  -  802.2 Chemical Reactions  -  801 Chemistry  -  753.1 Ultrasonic Waves  -  543.5 Tungsten and Alloys
  Database:Compendex

9. Accession number:20115014603054
  Title:Large flow injector equipped with piezoelectric crystal
  Authors:Wang, Jun1 ; Xiong, Qinghui2 ; Zhang, Youtong2 
  Author affiliation:1  Department of Mechanical Engineering, Academy of Armored Forces Engineering, Beijing 100072, China
                 2  School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
  Corresponding author:Wang, J. (joe4126@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  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:Demand on fuel injection quantity in heavy duty diesel engine was analyzed, and design method and sketch for piezoelectric injector were presented. Based on the structural size requirement of fuel injector, output character of two piezoelectricity was calculated and compared, response time of piezoelectricity was measured in given displacement, response character of hydraulic driven mechanism was measured by the experiment, dual row orifice arrange was made in nozzle couple. Combined the experimental data, injection fuel quantity for designed injector was measured and it showed that linearity of fuel injection quantity was good in some scope, minimal dwell time 0.6 ms of main injection and pre-injection was measured, and injection fuel effect for this injector was observed. Results show that this sketch of piezoelectric actuator, hydraulic amplifying driven and dual row orifice can meet the demand on large flow rate injection.
  Number of references:10
  Main heading:Piezoelectricity
  Controlled terms:Crystallography  -  Design  -  Diesel engines  -  Experiments  -  Fuel injection  -  Fuels  -  Jet pumps  -  Orifices  -  Piezoelectric actuators  -  Piezoelectric materials
  Uncontrolled terms:Design method  -  Dwell time  -  Experimental data  -  Flow injectors  -  Fuel injector  -  Fuel injectors  -  Fuel quantity  -  Heavy-duty diesel engine  -  Injection quantity  -  Large flow rate   -  Piezoelectric crystals  -  Structural size
  Classification code:933.1 Crystalline Solids  -  619.1 Pipe, Piping and Pipelines  -  708 Electric and Magnetic Materials  -  708.1 Dielectric Materials  -  715 Electronic Equipment, General Purpose and Industrial  -  732 Control Devices  -  901.3 Engineering Research  -  618.2 Pumps  -  524 Solid Fuels  -  523 Liquid Fuels  -  522 Gas Fuels  -  521 Fuel Combustion and Flame Research  -  408 Structural Design  -  612.2 Diesel Engines
  Database:Compendex

10. Accession number:20115014603073
  Title:Dynamic model of heat pump drying for cabbage seeds
  Authors:Zhao, Haibo1, 2 ; Yang, Zhao1 
  Author affiliation:1  School of Mechanical Engineering, Tianjin University, Tianjin 300072, China
                 2  School of Ocean, Yantai University, Yantai 264005, China
  Corresponding author:Yang, Z. (zhaoyang@tju.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:118-123
  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:Twelve kinds of semi-empirical and empirical mathematical drying models were analyzed. Using experimental data of the heat pump cabbage seeds drying from the finding references, the twelve kinds of drying models have been studied according to the considerations or no considerations of dry air's temperature and relative humidity. Four statistical indexes including coefficient of determination R2, root mean square error ERMS, reduced mean square of the deviation χ2, mean relative percent deviation EMD, have been used as the criterion for selection and analysis of different models. Results showed that after considering influences of both temperature and humidity of dry air, most of the twelve models have higher R2, lower χ2, ERMS and EMD. The models of modified Henderson and Pabis, Midilli et al and Two-term exponential are more accurate than others.
  Number of references:10
  Main heading:Heat pump systems
  Controlled terms:Drying  -  Dynamic models  -  Mean square error  -  Pumps  -  Seed
  Uncontrolled terms:Coefficient of determination  -  Dry air  -  Drying model  -  Experimental data  -  Heat pump drying  -  Heat pumps  -  Mean square  -  Root mean square errors  -  Semi-empirical  -  Temperature and relative humidity
  Classification code:618.2 Pumps  -  641.2 Heat Transfer  -  642.1 Process Heating  -  731.1 Control Systems  -  821.4 Agricultural Products  -  921 Mathematics
  Database:Compendex

11. Accession number:20115014603072
  Title:Automatic high hydrostatic pressure equipment for food sterilization
  Authors:Yi, Jianyong1 ; Zhang, Yan1 ; Liao, Xiaojun1 ; Wang, Huanyu2 ; Hu, Xiaosong1 
  Author affiliation:1  College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
                 2  Baotou Kefa High Pressure Technology Limited Company, Baotou 014030, China
  Corresponding author:Hu, X. (huxiaos@263.net
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:113-117
  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 design principle of automatic high hydrostatic pressure equipment, its structural characteristics and major technical difficulties were introduced. The structure and the optimum parameters of high pressure intensifier, check valve, relief valve, sealing system and temperature sensor system were studied and confirmed. The results of performance test prove that it has the advantages of reasonable structure, easy operation, steady performance and reliable security. Furthermore, several batches of fresh peach juice were processed by using this equipment, and the results showed that commercial sterilization was achieved after treated by HHP at 600 MPa for 5 min.
  Number of references:9
  Main heading:Equipment
  Controlled terms:Food processing  -  Hydraulics  -  Hydrodynamics  -  Hydrostatic pressure  -  Sterilization (cleaning)  -  Structural optimization
  Uncontrolled terms:Check valves  -  Design Principles  -  Food sterilization  -  High hydrostatic pressure  -  High pressure intensifiers  -  Optimum parameters  -  Performance tests  -  Relief valve  -  Sealing system  -  Steady performance   -  Structural characteristics  -  Technical difficulties
  Classification code:631.1.1 Liquid Dynamics  -  632.1 Hydraulics  -  822.2 Food Processing Operations  -  901 Engineering Profession  -  921.5 Optimization Techniques
  Database:Compendex

12. Accession number:20115014603056
  Title:A structural optimization cooling water jacket and an analysis of its flow characteristics of new-type horizontal diesel engine
  Authors:Lei, Jilin1 ; Shen, Lizhong1 ; Chen, Zhie1 ; Bi, Yuhua1 ; Chen, Jianming2 
  Author affiliation:1  Province Key Laboratory of Engines, Kunming University of Science and Technology, Kunming 650224, China
                2  Yunnan Xintianli Machinery Manufacturing Co. Ltd., Kunming 650300, China
  Corresponding author:Lei, J. (leijilin@sina.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:19-26
  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:According to the structural characteristics of new-type horizontal diesel engine, the cooling jacket of forced cooling closed-loop system was designed, the temperature and pressure of inlet position and key points of cooling jacket were measured and analyzed under different working conditions. Computational fluid dynamics (CFD) software was utilized to study the fluid flow and the flow field, the pressure field and heat transfer coefficient distribution were analyzed and optimized. The results indicated that the mean flow velocity, average heat transfer coefficient and whole pressure loss of the original cooling jacket were 1.00 m/s, 7767 W/(m2·K) and 0.027 MPa respectively. They met the requirements of engineering design. But the cooling water flow velocity and average heat transfer coefficient between two cylinder bore were non-uniform. There were big swirls in the central region in public cavity and the top region in the second cylinder block water jacket and dead flow region in the bridge of the nose area of the second cylinder head and the local area below two exhaust port. After optimization, the mean flow velocity and average heat transfer coefficient came up to 1.35 m/s and 9826 W/(m2·K), increased by 35% and 26.5% respectively than the original design. The mean flow velocity of cooling water came up to 1.33 m/s, increased by 41.5% and the average heat transfer coefficient was greater than 5000 W/(m2·K) in the bridge of the nose area of cylinder head. Compared to the original design, there was no dead flow region, no big swirls existed in new cooling jacket.
  Number of references:12
  Main heading:Computational fluid dynamics
  Controlled terms:Cooling  -  Cooling water  -  Design  -  Diesel engines  -  Flow of fluids  -  Flow velocity  -  Heat transfer coefficients  -  Inlet flow  -  Structural optimization  -  Velocity
  Uncontrolled terms:Cooling jackets  -  Cooling water flow  -  Cylinder block  -  Cylinder head  -  Engineering design  -  Exhaust ports  -  Flow characteristic  -  Flow regions  -  Forced cooling  -  Heat transfer coefficient distribution   -  Keypoints  -  Mean flow velocities  -  Original design  -  Pressure field  -  Pressure loss  -  Structural characteristics  -  Two cylinders  -  Working conditions
  Classification code:921.5 Optimization Techniques  -  641.2 Heat Transfer  -  631.1 Fluid Flow, General  -  931.1 Mechanics  -  631 Fluid Flow  -  612.2 Diesel Engines  -  408 Structural Design  -  616 Heat Exchangers
  Database:Compendex

13. Accession number:20115014603067
  Title:3D model rebuilding of pumps impeller based on ICT
  Authors:Jiang, Xiaoping1 ; Shi, Weidong1 ; Li, Wei1 ; Liu, Houlin1 ; Tan, Minggao1 
  Author affiliation:1  Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Jiang, X. (jxp2502@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:85-88 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:In order to rebuild 3D models of pump impeller, ICT fault images in high quality of two typical impellers were collected at first, and format conversion from RAW to BMP was fulfilled though a developed program. On the platform of VC 6.0, MFC, OpenGL, ADO were used, and with the technologies of fault images pre-processing, 2D image processing and 2D geometric processing, noise to these images was removed and image definition was greatly improved. Development tools like 3D model in surface were reconstructed, transformation from surface model to solid model was also realized by triangular facets and B-Rep model. Living rebuilt examples fulfilled on ReImpeller3D showed that the way of reconstruction can supply geometrical models for numerical simulation, FEM, RP, digitized production, and optimization design, so it is feasible to use ICT fault images to rebuild 3D models of the impellers.
  Number of references:8
  Main heading:Three dimensional
  Controlled terms:Application programming interfaces (API)  -  Content based retrieval  -  Image processing  -  Impellers  -  Pumps
  Uncontrolled terms:3D models  -  Boundary representations  -  Development tools  -  Format conversion  -  Geometric processing  -  Geometrical models  -  High quality  -  ICT  -  Image definition  -  Optimization design   -  Pre-processing  -  Pump impeller  -  Solid model  -  Surface models  -  Triangular facets  -  VC 6.0
  Classification code:601.2 Machine Components  -  618.2 Pumps  -  723 Computer Software, Data Handling and Applications  -  723.5 Computer Applications  -  741 Light, Optics and Optical Devices
  Database:Compendex

14. Accession number:20115014603092
  Title:Algorithm for extracting sharp features from point cloud models
  Authors:Zou, Dong1 ; Pang, Mingyong1 
  Author affiliation:1  Department of Educational Technology, Nanjing Normal University, Nanjing 210097, China
  Corresponding author:Pang, M. (panion@graphics.nju.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:222-227
  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 moving least squares method, a method for extracting feature curves from point clouds was presented. Firstly the algorithm calculated projection residuals and potential feature points were identified in point cloud model. The potential feature points were then smoothed by employing a modified version of the principal component analysis approach. Subsequently, a feature-polyline propagation technique was used to approximate the feature points by a set of polylines. Finally the feature curves were optimized by the algorithm to resolve gaps and recover the junctions. Experiments show that the algorithm is very robust, and it can extract feature curves from various point clouds.
  Number of references:14
  Main heading:Least squares approximations
  Controlled terms:Algorithms  -  Clouds  -  Curve fitting  -  Feature extraction  -  Principal component analysis
  Uncontrolled terms:Extracting features  -  Feature curves  -  Moving least squares  -  Moving least squares method  -  Point cloud  -  Point clouds  -  Polylines  -  Potential features  -  Principal Components  -  Sharp features
  Classification code:443 Meteorology  -  716 Telecommunication; Radar, Radio and Television  -  723 Computer Software, Data Handling and Applications  -  921 Mathematics  -  921.6 Numerical Methods  -  922.2 Mathematical Statistics
  Database:Compendex

15. Accession number:20115014603061
  Title:Effects of limited irrigation on photosynthesis and fluorescence of winter wheat
  Authors:Yan, Hui1 ; Hu, Xiaotao1 ; Yao, Fuqi1 
  Author affiliation:1  Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi 712100, China
  Corresponding author:Hu, X. (huxiaotao11@nwsuaf.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:49-54
  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:Variations of photosynthesis and chlorophyll fluorescence for winter wheat leaves under limited irrigation were analyzed. Meanwhile stomatal and non-stomatal limitations of photosynthesis in winter wheat under limited irrigation were also discussed. The results indicate that mild limited irrigation does not significantly affect photosynthesis and chlorophyll fluorescence. At the flowering and early grain filling stages, stomatal limitation resulted from moderate and severe limited irrigation is the major factor resulting in the reduction of photosynthesis rate. However, at the late grain filling stage, the maximum photochemical efficiency of photosystem II is significantly reduced due to moderate and severe limited irrigation, and non-stomatal limitation becomes the major factor in reducing the photosynthesis rate.
  Number of references:26
  Main heading:Irrigation
  Controlled terms:Chlorophyll  -  Crops  -  Fluorescence  -  Grain (agricultural product)  -  Injection molding  -  Photosynthesis
  Uncontrolled terms:Chlorophyll fluorescence  -  Grain filling  -  Limited irrigations  -  Major factors  -  Photochemical efficiency  -  Photosynthesis rate  -  Photosystem II  -  Stomatal limitations  -  Winter wheat
  Classification code:741.1 Light/Optics  -  804.1 Organic Compounds  -  816.1 Processing of Plastics and Other Polymers  -  821.3 Agricultural Methods  -  821.4 Agricultural Products
  Database:Compendex

16. Accession number:20115014603063
  Title:Effect of straw-incorporation on corn yield and water use efficiency in arid farming areas
  Authors:Xie, Wenyan1, 2 ; Fan, Guisheng1 ; Zhou, Huaiping2, 3 ; Guan, Chunlin2 ; Yang, Zhenxing2 
  Author affiliation:1  College of Environment Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
                 2  Institute of Agricultural Environment and Resources, Shanxi Academy of Agricultural Sciences, Taiyuan 030006, China
                 3  College of Biological Engineering, Shanxi University, Taiyuan 030006, China
  Corresponding author:Fan, G. (fanguis5507@263.net
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:60-67
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Based on the results from 18-year long-term location experiment in dryland experimental area of northern China, the effects of various kinds of straw return to field such as no straw returning (CK), straw mulching (SM), straw crushing (SC), cattle manure (CM) and different fertilization time i.e. spring and autumn on corn yield and water use efficiency were studied. The results showed that the experiment of combining autumn fertilizing with returning stalks to field could increase the yield and water use efficiency of spring maize significantly compared to the spring fertilizing, meanwhile, it decreased the accumulated water consumption and increased the soil water storage amount. The results showed that autumn fertilizing increased 9.71-15.58 t/hm2 in yield, compared with spring fertilizing. The range of increased in yield was 8.33%-16.19%. The total corn yield and water use efficiency in the past 18-year decreased in the following order: CM>SM>SC>CK. In different rainfall years, the corn yield and water use efficiency were very different. In normal years, the corn yield was highest. In dry years, the water use efficiency of spring maize was highest and yield increasing effect from straw mulching combining with autumn fertilizing was striking.
  Number of references:17
  Main heading:Water supply
  Controlled terms:Efficiency  -  Experiments  -  Manures  -  Soil moisture
  Uncontrolled terms:Cattle manures  -  Corn yields  -  Dryland  -  Fertilizer applications  -  Increasing effect  -  Northern China  -  Soil water storage  -  Spring maize  -  Straw mulching  -  Water consumption   -  Water use efficiency
  Classification code:446.1 Water Supply Systems  -  452.3 Industrial Wastes  -  483.1 Soils and Soil Mechanics  -  901.3 Engineering Research  -  913.1 Production Engineering
  Database:Compendex

17. Accession number:20115014603080
  Title:Estimation method of apple growing attitude based on computer vision
  Authors:Xie, Zhonghong1, 2 ; Xu, Ying1 ; Ji, Changying2 ; Guo, Xiaoqing1 ; Zhu, Shuxin1 
  Author affiliation:1  College of Information Technology, Nanjing Agricultural University, Nanjing 210095, China
                 2  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
  Corresponding author:Ji, C. (chyji@njau.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:154-157 153
  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 avoid damaging apples and branches caused by manipulator during the picking operation, for the absence of attitude information, an apple's attitude estimation method was put forward. After the apple object was segmented from background with the two-step algorithm based on the characters of color and texture, the freeman chain code algorithm was used to extract one-pixel fruit contour. Then least distance method, least slope variance method and three collinear points' method were given, and the recognition rates of three methods were compared. At last, for the purpose of improving recognition rate, decision method based on fusion of four methods was proposed. The research results showed that the recognition rates by using four methods were higher than using any one of methods separately, and the right recognition rate could reach to 90%.
  Number of references:9
  Main heading:Fruits
  Controlled terms:Algorithms  -  Codes (symbols)  -  Computer vision  -  Estimation
  Uncontrolled terms:Apple  -  Attitude estimation  -  Decision method  -  Distance method  -  Estimation methods  -  Freeman chain code  -  Recognition rates  -  Research results  -  Slope variance  -  Two-step algorithms
  Classification code:723.2 Data Processing and Image Processing  -  723.5 Computer Applications  -  821.4 Agricultural Products  -  921 Mathematics
  Database:Compendex

18. Accession number:20115014603055
  Title:Intake port design for low-pressure air-assisted in-cylinder direct injection gasoline engine
  Authors:Hu, Chunming1 ; Wu, Shan1 ; Zhan, Zhangsong2 ; Yu, Yong1 ; Lü, Yong1 ; Zhang, Wei1 
  Author affiliation:1  Tianjin Internal Combustion Engine Research Institute, Tianjin University, Tianjin 300072, China
                 2  Chongqing Changan Automobile Co. Ltd., Chongqing 400020, China
  Corresponding author:Hu, C. (cmhu@tju.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:15-18 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:Taking a 2.0 L four-valve port fuel injection gasoline engine as prototype, the low-pressure air-assisted direct injection gasoline engine and its intake ports were developed and optimized by using CFD simulation technology combined with steady flow test method. The 3-D simulation model of the intake port was built with CFD software, and calculation and analysis were carried out then. The calculation values were in a good agreement with the steady flow test results, and the data showed that the intake port provided low intake capacity and high tumble motion. Analysis of 3-D flow field showed that there was gas retention phenomenon in some areas. After structure optimization of the intake port with CFD software according to the requirements of air-flow motion characters inside the cylinder, the tumble motion was weakened by increasing the cross-sectional area nearby the valve stem to improve its intake capacity, which also reduced the gas retention phenomenon.
  Number of references:11
  Main heading:Direct injection
  Controlled terms:Air intakes  -  Computational fluid dynamics  -  Computer software  -  Design  -  Engine cylinders  -  Gasoline  -  Intake valves  -  Steady flow  -  Structural optimization  -  Three dimensional   -  Three dimensional computer graphics
  Uncontrolled terms:3D simulations  -  Air flow  -  CFD simulations  -  CFD softwares  -  Cross sectional area  -  Direct injection gasoline engine  -  Gas retention  -  Gasoline engine  -  In-cylinder direct injection technology  -  Intake port   -  Port fuel injections  -  Steady flow test  -  Structure optimization  -  Tumble motion  -  Valve stem
  Classification code:921.5 Optimization Techniques  -  723 Computer Software, Data Handling and Applications  -  631 Fluid Flow  -  921.6 Numerical Methods  -  612.1.1 Internal Combustion Engine Components  -  521 Fuel Combustion and Flame Research  -  408 Structural Design  -  523 Liquid Fuels
  Database:Compendex

19. Accession number:20115014603058
  Title:Relationship between soil surface porosity and roughness indices based on fractal theory
  Authors:Wang, Congying1 ; Zhang, Huijuan1 ; Sun, Yurui1 ; Lin, Jianhui2 
  Author affiliation:1  College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
                 2  School of Technology, Beijing Forestry University, Beijing 100083, China
  Corresponding author:Sun, Y. (pal@cau.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  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:With the aim to establish the relationship between soil surface porosity and surface roughness, a fractal analysis procedure based on 3-D surface area calculation was proposed, which applied a surface unit to cover the soil roughness characteristics. Using the soil surface unevenness data measured by a laser profiler, the method could derive the fractal dimension of soil surface directly (D ∈ [2,3)). Furthermore, 3-D surface area method was also introduced into multi-fractal spectrum analysis for investigating fine scale information. The statistical analysis demonstrates that fractal dimension Dl, Dr, and multi-fractal parameters α|fmax, Δα can reflect the change process of soil surface roughness effectively regardless the influence of different tillage types. In this case, α|fmax fitted a linear relation to porosity with the value of R2=0.7014, which showed potential to be a meaningful indictor for surface porosity estimation.
  Number of references:25
  Main heading:Surface roughness
  Controlled terms:Agriculture  -  Fractal dimension  -  Fractals  -  Porosity  -  Soils  -  Spectrum analysis  -  Three dimensional
  Uncontrolled terms:Change process  -  Fractal analysis  -  Fractal theory  -  Laser profilers  -  Linear relation  -  Multi fractals  -  Multi-fractal spectrum  -  Roughness index  -  Soil roughness  -  Soil surfaces   -  Surface area  -  Surface porosity  -  Surface units
  Classification code:483.1 Soils and Soil Mechanics  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  902.1 Engineering Graphics  -  921 Mathematics  -  931.2 Physical Properties of Gases, Liquids and Solids
  Database:Compendex

20. Accession number:20115014603070
  Title:Properties of pyrolytic lignin from bio-oil
  Authors:Chang, Sheng1 ; Zhao, Zengli1 ; Zheng, Anqing1 ; Zhang, Wei1, 2 ; Li, Haibin1 
  Author affiliation:1  Key Laboratory of Renewable Energy and Natural Gas Hydrate, Chinese Academy of Sciences, Guangzhou 510640, China
                 2  Graduate University of Chinese Academy of Sciences, Beijing 100039, China
  Corresponding author:Zhao, Z. (zhaozl@ms.giec.ac.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:99-105
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Pyrolytic lignin was separated from bio-oil. The structure and pyrolysis characteristics of pyrolytic lignin were compared with an alkali lignin. The content of main elements in two kinds of lignin was the same level, but the content of carbon was higher and the content of oxygen was lower in pyrolytic lignin compared with alkali lignin. It was shown that alcoholic hydroxyl group in pyrolytic lignin was less than alkali lignin with Fourier transform infrared spectroscopy (FTIR) analysis. Thermogravimetric analysis (TGA) revealed that the rate of weight loss of pyrolytic lignin was quicker at low temperature and the thermal stability was worse compared with alkali lignin. It was observed that the composition of pyrolysis products of two kinds of lignin was largely different by the experiments of pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The contents of aromatic compounds in pyrolysis products of pyrolytic lignin were both higher than alkali lignin at two temperatures. The main components in pyrolysis products of alkali lignin were alcohols, while the content of aromatic compounds was low at 250°C. However the content of aromatic compounds in pyrolysis products of alkali lignin increased at 550°C, the content of alcohols decreased, and large numbers of acetone were formed.
  Number of references:20
  Main heading:Lignin
  Controlled terms:Acetone  -  Aromatic compounds  -  Aromatization  -  Fourier transform infrared spectroscopy  -  Pyrolysis  -  Thermogravimetric analysis
  Uncontrolled terms:Alkali lignin  -  Bio oil  -  FTIR  -  Py-GC/MS  -  TGA
  Classification code:801 Chemistry  -  802.2 Chemical Reactions  -  804.1 Organic Compounds  -  815.1.1 Organic Polymers
  Database:Compendex

21. Accession number:20115014603089
  Title:Structural synthesis of fully-isotropic 2T1R spatial parallel robotic manipulators
  Authors:Zhang, Yanbin1 ; Wu, Xin2 ; Liu, Hongzhao3 
  Author affiliation:1  School of Planning and Architectural Engineering, Henan University of Science and Technology, Luoyang 471003, China
                 2  School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China
                 3  Faculty of Mechanical and Precision Instrumental Engineering, Xi'an University of Technology, Xi'an 710048, China
  Corresponding author:Zhang, Y. (yanbin_zh@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:200-207
  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:A systemic methodology for structural synthesis of fully-isotropic two-translational and one-rotational (2T1R) spatial parallel robotic manipulators was proposed. According to the prescribed characteristics of each mechanism limb, the actuation screws, actuated screws and mobile unactuated screws of every limb were confirmed at first based on the reciprocal screw theory. Then the structural synthesis of each kinematic chain for fully-isotropic 2T1R spatial parallel robotic manipulators was performed in the light of different connectivity of the limbs. Finally, the anticipant manipulators were synthesized by connecting the moving platforms to the fixed bases and a lot of new mechanisms were attained. Kinematical analysis about one of manipulators designed here showed that the method is reasonable and correct. The kinematic Jacobian of the mechanism is an identical matrix, so it performed very well with regard to motion and force transmissions.
  Number of references:16
  Main heading:Kinematics
  Controlled terms:Fixed platforms  -  Flexible manipulators  -  Robotics  -  Robots  -  Screws
  Uncontrolled terms:Force transmission  -  Full-isotropic  -  Fully-isotropic  -  Jacobians  -  Kinematic chain  -  Kinematical analysis  -  matrix  -  Moving platform  -  New mechanisms  -  Parallel robotics   -  Reciprocal screw theory  -  Structural synthesis  -  Unactuated
  Classification code:511.2 Oil Field Equipment  -  605 Small Tools and Hardware  -  731.5 Robotics  -  931.1 Mechanics
  Database:Compendex

22. Accession number:20115014603081
  Title:3-D modeling of corn root based on the coordinate transformation
  Authors:Wang, Jili1 ; Jia, Qingxiang1 ; Yang, Xinyi1 
  Author affiliation:1  College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
  Corresponding author:Jia, Q. (jiaqx@jlu.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:158-163
  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:Corn root is separated into a series of root elements. According to the statistical measured parameters, the random 3-D model of corn root was constituted based on coordinate transformation. In the model building, the measured data was fitted to NURBS curve, shape and surface of the model were expressed by NURBS curve and NURBS surface respectively. Matlab and 3-D CAD software were used as main tools. The model was saved in IGES file format which can be import into 3-D CAD software and FEA software for further analysis of mechanical properties of the corn root. The corn root modeling method is different in principle from the other existed methods and has great significance for mechanical analysis of the root system in the crop root treatment, plants reinforcement of soil and etc.
  Number of references:10
  Main heading:Three dimensional
  Controlled terms:Computer aided design  -  Mechanical properties  -  Plants (botany)
  Uncontrolled terms:3-d modeling  -  3D models  -  CAD softwares  -  Co-ordinate transformation  -  Crop roots  -  FEA software  -  File formats  -  IGES file  -  Measured data  -  Measured parameters   -  Mechanical analysis  -  Modeling method  -  NURBS curves  -  NURBS surface  -  Root element  -  Root system
  Classification code:461.9 Biology  -  723.5 Computer Applications  -  951 Materials Science
  Database:Compendex

23. Accession number:20115014603062
  Title:Effect of soil compaction stress on the growth of corn and calcium absorption at the seedling stage
  Authors:Xu, Hai1 ; Wang, Yiquan1 ; Wang, Yongjian1 ; Xu, Shuang1 ; Li, Peng1 
  Author affiliation:1  College of Resources and Environment, Northwest A and F University, Yangling, Shaanxi 712100, China
  Corresponding author:Wang, Y. (soilphysics@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:55-59 54
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:With the aim to evaluate the influence of soil hardness to corn growth and calcium absorption, five levels of soil hardness (soil bulk density: 1.1, 1.2, 1.3, 1.4 and 1.5 g/cm3) were established in the pot experiment. There was no significant influence of soil hardness to corn growth in the first 15 d after seeding, however, it inhibited aboveground corn growth in the following days. Root dry mass and activity both decreased because of the high soil hardness which had a negative effect on calcium absorption. The highest calcium content (1.67%) occurred in the treatment with 1.2 g/cm3 soil hardness. The increase of soil hardness caused root activity decrease which led to the decrease of calcium absorption, thus, lower crop resistance to disease and cause in senescence in advance. It was concluded that too high or too low density of soil bulk was disadvantage to the crop growth.
  Number of references:22
  Main heading:Soils
  Controlled terms:Calcium  -  Compaction  -  Crops  -  Hardness  -  Plants (botany)  -  Soil mechanics
  Uncontrolled terms:Calcium absorption  -  Calcium content  -  Corn  -  Corn growth  -  Crop growth  -  Crop resistance  -  Dry mass  -  Low density  -  Pot experiment  -  Soil bulk density   -  Soil compaction
  Classification code:951 Materials Science  -  821.4 Agricultural Products  -  549.2 Alkaline Earth Metals  -  536.1 Powder Metallurgy Operations  -  483.1 Soils and Soil Mechanics  -  461.9 Biology  -  421 Strength of Building Materials; Mechanical Properties
  Database:Compendex

24. Accession number:20115014603093
  Title:Error analysis and performance test of a three-dimensional CMM touch trigger probe
  Authors:Ding, Bangzhou1 ; Fei, Yetai1 ; Xia, Haojie1 ; Liu, Fangfang1 
  Author affiliation:1  School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei 230009, China
  Corresponding author:Fei, Y. (ytfei@hfut.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:228-230 213
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A 3-D coordinate measuring machine (CMM) touch trigger probe based on fiber Bragg gratings was developed. The sensing system and the control box of the probe were described respectively. The error of the probe may arise from the mechanical structure, the sensing signal demodulation system, the measuring speed and the approaching distance during the process. Experiments showed that probe positioning accuracy in single direction could reach 20 nm, sensitivity came up to 50 nm and a measuring force was less than 5 mN.
  Number of references:9
  Main heading:Coordinate measuring machines
  Controlled terms:Demodulation  -  Error analysis  -  Fiber Bragg gratings  -  Measurements  -  Probes  -  Scanning  -  Sensors  -  Three dimensional
  Uncontrolled terms:Control box  -  Error source analysis  -  Mechanical structures  -  Performance tests  -  Positioning accuracy  -  Sensing signals  -  Sensing systems  -  Touch trigger probes
  Classification code:943.3 Special Purpose Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  921.6 Numerical Methods  -  801 Chemistry  -  741.3 Optical Devices and Systems  -  716 Telecommunication; Radar, Radio and Television  -  902.1 Engineering Graphics
  Database:Compendex

25. Accession number:20115014603079
  Title:Color image segmentation method for corn diseases based on parallelized firing PCNN
  Authors:Wang, Shouzhi1, 2 ; He, Dongjian1 ; Han, Jinyu3 
  Author affiliation:1  College of Mechanical and Electronic Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
                 2  Department of Mechanical and Electronic Engineering, Weihai Vocation College, Weihai 264210, China
                 3  Department of Information Engineering, Weihai Vocation College, Weihai 264210, China
  Corresponding author:He, D. (hdj168@nwsuaf.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:148-153
  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 kind of unsupervised segmentation processing method based on parallelized firing PCNN algorithm was proposed. The color images of corn disease were segmented by improved parallelized firing PCNN which the normalized L U as external stimulus input, the integrated information of the geometric distance and the color difference between neighboring pixels as the PCNN coupling value, the minimum color contrast of color vector as the criteria of the best segmentation results, in parallel with improved disease of maize PCNN to segment color images. The segmentation experiments which 100 images of four kinds of diseases showed that the method could better segment the diseased regions with high fitness and low complexity parameters.
  Number of references:13
  Main heading:Image segmentation
  Controlled terms:Color  -  Firing (of materials)  -  Image processing
  Uncontrolled terms:Color contrast  -  Color difference  -  Color image segmentation  -  Color images  -  Color vector  -  External stimulus  -  Geometric distances  -  Integrated informations  -  Low complexity  -  Parallelized firing PCNN   -  Segmentation results  -  Unsupervised segmentation
  Classification code:741 Light, Optics and Optical Devices  -  741.1 Light/Optics  -  812.1 Ceramics
  Database:Compendex

26. Accession number:20115014603078
  Title:Changes in main volatile compounds during aging process of yak meat
  Authors:Shi, Xixiong1 ; Yu, Qunli1 ; Tian, Jiachun1 
  Author affiliation:1  College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
  Corresponding author:Yu, Q. (yuqunlihl@sina.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:144-147
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Changes in volatile compounds during aging process of yak meat were determined by HS-SPME and GC/MS. The results showed that 54, 58, 63 kinds of volatile compounds were detected 0 d, 3 d, 8 d during aging process respectively. Volatiles from the Maillard reaction, which enhanced characteristic flavor of yak meat, increased during aging process, among them content of 3-hydroxyl-2-butanone, 2-methyl-3-furanthiol and 2-methylbutanal after 8 d of aging markedly increased by 183.17%, 128.40% and 190.10% respectively compared to those at 0 d of aging. While volatile components formed through lipid oxidation which reduced fatty flavor of yak meat such as aldehydes decreased during aging process; meanwhile volatile compounds from herbage decreased by 20.30%.
  Number of references:12
  Main heading:Volatile organic compounds
  Controlled terms:Aldehydes  -  Chemical analysis  -  Ketones  -  Meats
  Uncontrolled terms:Aging process  -  GC/MS analysis  -  HS-SPME  -  Lipid oxidation  -  Maillard reaction  -  Solid-phase microextraction  -  Volatile aromatic compounds  -  Volatile components  -  Volatile compounds
  Classification code:801 Chemistry  -  804 Chemical Products Generally  -  804.1 Organic Compounds  -  822.3 Food Products
  Database:Compendex

27. Accession number:20115014603065
  Title:Hydraulic performance of impact sprinkler type PY115 at low pressure
  Authors:Zhu, Xingye1 ; Yuan, Shouqi1 ; Liu, Junping1 
  Author affiliation:1  Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Zhu, X. (zhuxy@ujs.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:76-80
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:To overcome the poor hydraulic performance problem of impact sprinkler when operating at low pressure, a program of modifying the shape of outlet nozzle was put forward. It was used to reduce the droplet impact strength and improve the uniformity coefficient. Impact sprinkler typed PY115 was chosen and three improved nozzles were designed. One, two or three notches were to be added in the outlet nozzle, respectively. All the notches were 0.5 mm in width and 0.3 mm in height and they were set at bottom, left or right side of the outlet nozzle. Experiments were carried out under the low operating pressure of 200 kPa. When the rectangular spaces were 13 m to 18 m, Matlab was used to establish a program to simulate the hydraulic performances. The results showed that with the increase in the number of notches, the flow-rate increased, the wetted radius were shortened by 8.1% to 9.4%, the reduced coefficient of droplet diameter was 2.9% to 6.8%, the average irrigated intensity increased and complied with national requirement. The combined uniformity coefficient was improved for all the improved nozzles. The effect was more obvious when three notches were added in the outlet nozzle and the maximal uniformity coefficient can be more than 90%. Modifying nozzle shape was proved to be an available program as a result.
  Number of references:15
  Main heading:Nozzles
  Controlled terms:Impact strength  -  MATLAB
  Uncontrolled terms:Droplet diameters  -  Hydraulic performance  -  Impact sprinkler  -  Low pressures  -  Nozzle shape  -  Operating pressure  -  Uniformity coefficient
  Classification code:421 Strength of Building Materials; Mechanical Properties  -  631.1 Fluid Flow, General  -  921 Mathematics
  Database:Compendex

28. Accession number:20115014603052
  Title:SI electronic-controlled engine fueled with methanol dissociated
  Authors:Xu, Yuanli1 ; Yao, Chunde1 ; Li, Xucong1 
  Author affiliation:1  State Key Laboratory of Engine, Tianjin University, Tianjin 300072, China
  Corresponding author:Yao, C. (arcdyao@tju.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  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:Based on an SI electronic-controlled engine, hydrogen generator and electronic controlled unit were developed, the control strategy for fuel switching and hydrogen mixture mode were set up to realize a smooth transition in the period of fuel switching and an automatic operation under hydrogen mixture mode. Moreover, components measurement of hydrogen mixture online and its effects of mixture concentration on performance of SI engine were performed. The results indicate that besides hydrogen and monoxide carbon, certain amount of methanol steam was found in hydrogen mixture and they account for 23.3%-46%, 11.6%-23% and 31%-65% respectively. In addition, the fuel economy is also improved power with gasoline.
  Number of references:12
  Main heading:Hydrogen
  Controlled terms:Fuel economy  -  Fuels  -  Methanol  -  Mixtures
  Uncontrolled terms:Control strategies  -  Dissociated methanol  -  Fuel switching  -  Hydrogen generator  -  Mixture concentration  -  SI electronic-controlled engine  -  SI Engines  -  Smooth transitions
  Classification code:804.1 Organic Compounds  -  804 Chemical Products Generally  -  802.3 Chemical Operations  -  524 Solid Fuels  -  523 Liquid Fuels  -  522 Gas Fuels  -  521 Fuel Combustion and Flame Research
  Database:Compendex

29. Accession number:20115014603053
  Title:Visualization experiment and numerical simulation for cavitating flow in a diesel injector nozzle
  Authors:He, Zhixia1 ; Bai, Jin1 ; Wang, Qian1 ; Huang, Yunlong1 
  Author affiliation:1  School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:He, Z. (zxhe@ujs.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:6-9 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:A visualization unit with a proportion of the multi-hole injector nozzle for cavitating flow was developed, and by means of high-speed video camera, the pictures of the cavitating flow in a large-scale transparent nozzle were taken under various injection pressures. A three-dimensional grid model of the injector nozzles was established, and the three-dimensional numerical simulation of cavitating flow in nozzle holes of a multi-hole injector combined with these pictures from experiment was utilized to analyze flow characteristics of single-phase flow to supercavitation flow. The relationship between injection pressure, non-dimensional cavitation parameters and the discharge coefficient, as well as the critical conditions when the cavitation appeared was pointed out clearly.
  Number of references:8
  Main heading:Cavitation
  Controlled terms:Computer simulation  -  Diesel engines  -  Experiments  -  Jet pumps  -  Mathematical models  -  Nozzles  -  Three dimensional  -  Video cameras  -  Visualization
  Uncontrolled terms:Cavitating flow  -  Critical condition  -  Diesel injector nozzles  -  Discharge coefficients  -  Flow characteristic  -  High speed video cameras  -  Injection pressures  -  Injector nozzle  -  Nozzle holes  -  Single-phase flow   -  Supercavitation  -  Three-dimensional grids  -  Three-dimensional numerical simulations  -  Visualization experiment
  Classification code:921 Mathematics  -  902.1 Engineering Graphics  -  901.3 Engineering Research  -  742.2 Photographic Equipment  -  723.5 Computer Applications  -  631.1.1 Liquid Dynamics  -  631.1 Fluid Flow, General  -  618.2 Pumps  -  612.2 Diesel Engines
  Database:Compendex

30. Accession number:20115014603090
  Title:Dynamic modeling of flexible parallel robot
  Authors:Hu, Junfeng1 ; Zhang, Xianmin2 ; Zhu, Dachang1, 2 ; Chen, Qiang1 
  Author affiliation:1  School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
                 2  School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China
  Corresponding author:Hu, J. (hjfsuper@126.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:208-213
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:An accurate and simple method for dynamic modeling of general flexible parallel robot was proposed. According to the structural character of the parallel robot, it was devided into rigid sub-structure and elastic sub-structure, and the rigid-flexible coupling system was formed. The static platform and mobile platform were treated as rigid sub-structure because its deformations were smaller compared to the other part. The chains were treated as flexible sub-structure. The dynamic equations of each sub-structure were obtained, respectively. The dynamic equations of elastic sub-structure were obtained by using the finite element method and mode synthesis method. The dynamic equations of rigid sub-structure were built accounting for the effects of deformation of flexible sub-structure. The geometrical constraint relationship between three flexible sub-structures and the rigid platform was investigated to obtain a simple displacement and dynamic relation between them. The equations of all sub-structure were assembled to get the system dynamic equations. The comparative analysis of dynamic characteristics of a high-speed parallel manipulator show that the method is correct and feasible. Due to introducing the rigid sub-structure and application of the mode synthesis, the number of system freedom was reduced and the computational modeling was simplified. It provided a practical method for flexible parallel robot.
  Number of references:11
  Main heading:Robots
  Controlled terms:Deformation  -  Dynamic analysis  -  Finite element method  -  Flexible couplings  -  Manipulators
  Uncontrolled terms:Comparative analysis  -  Computational modeling  -  Dynamic characteristics  -  Dynamic equations  -  Dynamic modeling  -  Dynamic relation  -  Geometrical constraints  -  High-speed  -  Mobile platform  -  Mode synthesis method   -  Parallel manipulators  -  Parallel robots  -  Practical method  -  Rigid-flexible-coupling system  -  SIMPLE method  -  Structural character  -  Sub-structures  -  System Dynamics
  Classification code:421 Strength of Building Materials; Mechanical Properties  -  422 Strength of Building Materials; Test Equipment and Methods  -  422.2 Strength of Building Materials : Test Methods  -  602.2 Mechanical Transmissions  -  731.5 Robotics  -  921.6 Numerical Methods
  Database:Compendex
 
31. Accession number:20115014603082
  Title:Method of multi-feature fusion based on SVM and D-S evidence theory in weed recognition
  Authors:Li, Xianfeng1 ; Zhu, Weixing2 ; Kong, Lingdong1 ; Hua, Xiaopeng1 
  Author affiliation:1  School of Information Engineering, Yancheng Institute of Technology, Yancheng 224051, China
                 2  School of Electronic and Information Engineering, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Zhu, W. (wxzhu@ujs.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:164-168 163
  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 low accuracy and low stability of the single feature-based method for weed recognition, a multi-feature fusion method based on SVM and D-S evidence theory was proposed. Firstly, three types of visual features such as color, shape and texture were extracted from the plant leaves after a series of image processing. Then, the plants were classified according to each type of features utilizing SVM and the results were used as evidences to construct the basic probability assignment (BPA). Finally, using D-S combination rule of evidence to achieve the decision fusion and giving final recognition results by classification thresholds. The experimental results show that the accuracy of multi-feature fusion method is over 97% and it has good performance on accuracy and stability compared to the single feature-based method in weed recognition.
  Number of references:15
  Main heading:Feature extraction
  Controlled terms:Image processing  -  Support vector machines
  Uncontrolled terms:Basic probability assignment  -  Combination rules  -  D S evidence theory  -  Decision fusion  -  Feature-based method  -  Multi-feature fusion  -  Plant leaves  -  Support vector  -  Visual feature  -  Weed recognition
 Classification code:716 Telecommunication; Radar, Radio and Television  -  723 Computer Software, Data Handling and Applications  -  741 Light, Optics and Optical Devices
 Database:Compendex

32. Accession number:20115014603084
  Title:Response features of red edge parameters for lettuce leaf spectra under different nitrogen levels
  Authors:Zhu, Yongli1 ; Li, Pingping1 ; Mao, Hanping1 ; Wu, Yanyou1 
  Author affiliation:1  Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Zhu, Y. (zhuyongli76@126.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:174-177
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to obtain the optimum red edge parameters for using rapid detection of the lettuce leaf nitrogen content, the response feature of red edge parameters for leaf spectra under different nitrogen levels and the relationship between red edge parameters and leaf nitrogen contents were investigated. Visible and near infrared (Vis-NIR) spectroradiometer was used to collect the leaves' spectral data of water culture lettuce, and the chlorophyll meter (SPAD 502) was used to measure the leaf chlorophyll content. Red edge parameters, which included red edge position (λred), red edge area (Sred), red edge differential (Dλred), the minimum of red edge differential (Dλmin) and the ratio of Dλred to Dλmin (Dλred/Dλmin), were calculated based on the first derivative reflectance spectra in the red edge region. The results showed that the dynamic characteristics of red edge parameters changed with different nitrogen nutrition levels in water culture. It was concluded that λred, Dλmin, Sred and Dλred/Dλmin had significant relationship with the leaf chlorophyll content, respectively. In all red edge parameters, the correlation degree of λred was the highest with correlation coefficient 0.9420. And the root mean squared error was the lowest with 1.803. Therefore, it was demonstrated that λred could be a predictor for lettuce leaf nitrogen content.
  Number of references:11
  Main heading:Nitrogen
  Controlled terms:Chlorophyll  -  Infrared devices  -  Near infrared spectroscopy
  Uncontrolled terms:Correlation coefficient  -  Correlation degree  -  Dynamic characteristics  -  First derivative  -  Leaf chlorophyll content  -  Leaf nitrogen content  -  Lettuce  -  Nitrogen levels  -  Nitrogen nutrition  -  Rapid detection   -  Red edge  -  Red edge parameters  -  Red edge position  -  Reflectance spectrum  -  Root mean squared errors  -  Spectral data  -  Spectro-radiometers  -  Visible and near infrared  -  Visible-near infrared spectroscopy  -  Water culture
  Classification code:741.3 Optical Devices and Systems  -  804 Chemical Products Generally  -  804.1 Organic Compounds
  Database:Compendex

33. Accession number:20115014603059
  Title:Optimal analysis for determining the dual-pin length of soil moisture probe
  Authors:Zhao, Yandong1 ; Nie, Mingjun1 
  Author affiliation:1  School of Technology, Beijing Forestry University, Beijing 100083, China
  Corresponding author:Zhao, Y. (yandongzh@bjfu.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:39-43
  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 detailed analysis was provided based on the port impedance theory. The relationship between probe length and impedance characteristics of soil moisture sensors as terminal open or terminal short was deduced. With the aim to verify the theoretical conclusion, the simulation method by using high frequency structure simulator software (HFSS) and the experiment associated with several organic solutions as references of known dielectric constants were conducted. After a number of experiments, the result showed that the measuring range of soil moisture sensors as terminal open or terminal short, when probe length was within 0-8.3 cm, could be up to 0-100%.
  Number of references:11
  Main heading:Moisture control
  Controlled terms:Computer software  -  Experiments  -  Moisture meters  -  Probes  -  Sensors  -  Soil moisture  -  Water content
  Uncontrolled terms:Dielectric constants  -  High-frequency structure simulator softwares  -  Impedance characteristics  -  Moisture probe  -  Optimal analysis  -  Organic solutions  -  Simulation methods  -  Soil moisture sensors  -  Soil water content
  Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  901.3 Engineering Research  -  801 Chemistry  -  723 Computer Software, Data Handling and Applications  -  483.1 Soils and Soil Mechanics  -  444 Water Resources
  Database:Compendex

34. Accession number:20115014603057
  Title:Hardware-in-the-loop simulation system for belt type continuously variable transmission
  Authors:An, Ying1 ; Song, Chuanxue1 ; Gao, Shuai1 ; Liu, Jin'gang2 
  Author affiliation:1  College of Automobile Engineering, Jilin University, Changchun 130025, China
                 2  School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China
  Corresponding author:An, Y. (an05131026@sina.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:27-31
  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:Use the system identification to get the mathematic model of ratio-control-valve, clamping-force-valve and the clutch-control-valve, and then the CVT ratio response model, engine model and the whole vehicle model were set up by combining the theory and the experimental study. Based on the whole developed model, the hardware-in-the-loop test bench was set up. With the test data of one domestic CVT prototype vehicle taken as the example to verify the developed hardware-in-the-loop test system, comparative results between model response and the real vehicle prototype response show that the developed hardware-in-the-loop test bench can reflect all the characteristics of CVT vehicle. Therefore, the proposed hardware-in-the-loop test bench can be used for developing control strategy and diagnostic system.
  Number of references:11
  Main heading:Computer simulation
  Controlled terms:Hardware  -  Identification (control systems)  -  Synthetic apertures  -  Testing  -  Variable speed transmissions  -  Vehicle transmissions  -  Vehicles
  Uncontrolled terms:Continuously variable transmission  -  Control strategies  -  Developed model  -  Diagnostic systems  -  Engine models  -  Experimental studies  -  Hardware in-the-loop simulation  -  Hardware-in-the-loop tests  -  Mathematic model  -  Model response   -  Prototype vehicles  -  Real vehicles  -  Response model  -  System identifications  -  Test data  -  Vehicle model
  Classification code:731.1 Control Systems  -  723.5 Computer Applications  -  716.2 Radar Systems and Equipment  -  605 Small Tools and Hardware  -  602.2 Mechanical Transmissions  -  432 Highway Transportation  -  423.2 Non Mechanical Properties of Building Materials: Test Methods
  Database:Compendex

35. Accession number:20115014603088
  Title:Structural synthesis of decoupled spherical parallel mechanism based on driven-chain principle
  Authors:Zhang, Fan1 ; Zhang, Dan2 
  Author affiliation:1  School of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
                 2  Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, Oshawa L1H 7K4, Canada
  Corresponding author:Zhang, F. (pdszhangfan@yahoo.com.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:195-199
  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:Focused on the similarity between the kinematics of decoupled parallel mechanism and serial mechanism, a unique method of structural synthesis was presented, which was used to synthesize the decoupled parallel mechanism. The kinematic chains of decoupled parallel mechanism were consisted of by the basic kinematic chain and the driven-chains. The structural condition of decoupled spherical parallel mechanism was deduced, and a series of novel spherical parallel mechanism were synthesized. The kinematics analysis verified that the mechanism had three fully decoupled rotational DOFs, and each rotational DOF was driven by a single actuator.
  Number of references:15
  Main heading:Mechanisms
  Controlled terms:Kinematics  -  Spheres
  Uncontrolled terms:Basic kinematic chain  -  Decoupled motion  -  Driven-chain principle  -  Kinematic chain  -  Kinematics analysis  -  Parallel mechanism  -  Parallel mechanisms  -  Serial mechanism  -  Single actuators  -  Spherical parallel mechanism   -  Structural condition  -  Structural synthesis
  Classification code:601.3 Mechanisms  -  631 Fluid Flow  -  931.1 Mechanics
  Database:Compendex

36. Accession number:20115014603077
  Title:Optimization for the extraction and function characteristics of protein from rice bran by subcritical water
  Authors:Zhang, Haihui1 ; Wu, Yan1 ; Duan, Yuqing1 ; Ren, Xiaofeng1 ; Hu, Yue1 
  Author affiliation:1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Duan, Y. (dyq101@ujs.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:139-143
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:With the aim to optimize the technology parameter of subcritical water extracting protein from rice bran, the single factor and orthogonal experiments were conducted by taking protein yield as index, and the function characteristics of protein from rice bran were studied. The results were as follows: the ratio of protein in the extracts was 55.9% at 8.0 MPa, pH value 9.0, 200°C for 25 min with the liquid-solid ratio of 15 mL/g, the emulsion activity index of rice bran protein was 119.8 mL/g, and the emulsion stability indicator was 81.3 min; the foamability and the stability of foam were 71.5% and 37.4% respectively; the water/oil absorption and the solubility were 5.6%, 3.7% and 68.4% respectively. The extract time and the protein yield of rice bran extracted by the methods of alkaline water and ultrasonic assisted alkaline water were 120 min, 35.6%, and 30 min, 48.1% respectively. Compared with the previous two methods, subcritical water extracting protein from rice bran has obvious advantage in saving time and extraction ratio.
  Number of references:16
  Main heading:Extraction
  Controlled terms:Alkalinity  -  Emulsification  -  Optimization  -  Orthogonal functions  -  Proteins
  Uncontrolled terms:Activity index  -  Alkaline water  -  Emulsion stability  -  Extraction ratio  -  Foamability  -  Function characteristic  -  Liquid solids  -  Orthogonal experiment  -  pH value  -  Protein yield   -  Rice bran  -  Rice bran protein  -  Rice brans  -  Sub-critical water  -  Technology parameters
  Classification code:801.1 Chemistry, General  -  802.3 Chemical Operations  -  804.1 Organic Compounds  -  921 Mathematics  -  921.5 Optimization Techniques
  Database:Compendex

37. Accession number:20115014603076
  Title:Kinetics study on pulsed ultrasound-assisted extraction of protein and polysaccharide from defatted rice bran
  Authors:Ma, Haile1 ; Li, Qianjin1 ; Li, Shujun2 ; Qu, Wenjuan1 ; Qian, Wei1 ; Zhao, Fengmin2 
  Author affiliation:1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
                 2   Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, 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:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:135-138
  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 establish a kinetics model on pulsed ultrasound-assisted extraction of protein and polysaccharide from defatted rice bran, protein and polysaccharide concentration changes in the extracting solution were determined in the experiments. The results of the experiment have established a second-order kinetics models on pulsed ultrasound-assisted extraction for both protein and polysaccharide from defatted rice bran. The study showed that the extracting temperature had a remarkable effect on protein and polysaccharide leaching. There was a sharp increase in concentration of protein in the extracting solution when the extracting temperature reached 45°C whiles the sharp increase in concentration for polysaccharide occurred at 50°C. There was a linear increase in protein equilibrium concentration as the extracting temperature increased. The equilibrium concentration of the polysaccharide in the extracting solution increased sharply beyond 45°C. The initial extracting rate of protein and polysaccharide initially showed a downward trend and then began to increase.
  Number of references:10
  Main heading:Proteins
  Controlled terms:Concentration (process)  -  Enzyme kinetics  -  Experiments  -  Kinetics  -  Leaching  -  Light polarization  -  Polysaccharides  -  Ultrasonics
  Uncontrolled terms:Concentration change  -  Equilibrium concentration  -  Kinetics models  -  Kinetics studies  -  Rice brans  -  Second order kinetics  -  Sharp increase  -  Ultrasound-assisted extraction
  Classification code:931 Classical Physics; Quantum Theory; Relativity  -  901.3 Engineering Research  -  804.1 Organic Compounds  -  802.3 Chemical Operations  -  802.2 Chemical Reactions  -  753.1 Ultrasonic Waves  -  741.1 Light/Optics
  Database:Compendex

38. Accession number:20115014603060
  Title:Discrete element simulations of the cone penetration tests in sandy soil
  Authors:Li, Yanjie1 ; Lin, Jianhui1 ; Xu, Yong2 
  Author affiliation:1  School of Technology, Beijing Forestry University, Beijing 100083, China
                 2  School of Science, China Agricultural University, Beijing 100083, China
  Corresponding author:Li, Y. (liyanjie.bjfu@gmail.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:44-48
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The simulative study with discrete element method for the cone penetration into the sandy soil was investigated. The results of the simulations and the tests are in good agreement, and the friction on the cone side surface has little influence on the penetration resistance. The conclusion of DEM shows that the strong force chain is located at the cone tip, where the directions of particle velocities are in disorder, while the particles in other place are almost stabile. The penetration resistance increased as the increase of penetration depth, and the normal pressure on the side wall of the soil bin. However, the penetration velocity has little influence on the penetration resistance.
  Number of references:20
  Main heading:Soils
  Controlled terms:Finite difference method  -  Sand
  Uncontrolled terms:Cone penetration  -  Cone penetration tests  -  Cone penetrometers  -  Discrete element simulation  -  Force chains  -  Normal pressure  -  Particle velocities  -  Penetration  -  Penetration resistances  -  Penetration velocity   -  Sandy soils  -  Side walls
  Classification code:483.1 Soils and Soil Mechanics  -  921.6 Numerical Methods
  Database:Compendex

39. Accession number:20115014603068
  Title:Design of turntable-inclined scratch style photoelectric instrument to automatically count granules
  Authors:Song, Rengsu1 ; Hua, Jiao2 ; Lan, Jingzhen3 ; Xia, Shifeng3 
  Author affiliation:1  Institute of Sericulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
                 2  State Key Laboratory of Optical Instrumentation, Zhejiang University, Hangzhou 310027, China
                 3  Fuding Electronic Instrument Factory, Fuding 355200, China
  Corresponding author:Song, R. (susu-ali@hotmail.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:89-92 75
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Described herein are the principles for automatically arranging, and separating granules via an inclined turntable, the foundations of which have been established through the design and manufacture of a turntable-inclined scratch style photoelectric apparatus that can count granules or weigh up to 1000 of them. The unorganized granules enter an inclined trough and onto a turntable, the bottom of which automatically migrates, sorts and arranges the granules into space from each other, to get the reliable light-trough gaps, at which point a photoelectric apparatus accurately preset, counts and verifies the collection of granules. This type of instrument provides several advantages over other designs: the counting mechanism is extremely precise, for every round, the preset counting error is less than 1-2 granules, and the re-examination counting error rate is less than 0.04%; the counting speed is as high as 30-50 granules per second; the valid range of diameters is from 0.5 mm to 18mm; no seed damage was found during tests; the simple and reliable structure enables no electromagnetic vibration or noise; and the principles underlying the device have a wide range of potential applications beyond precise counting and sorting granules, especially for some devises with no-damage counting.
  Number of references:8
  Main heading:Granulation
  Controlled terms:Design  -  Instruments  -  Photoelectricity
  Uncontrolled terms:Automatically providing granules  -  Counting errors  -  Electromagnetic vibrations  -  Photoelectric count  -  Potential applications  -  Seed damage  -  Turntable-inclined scratch style
  Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  802.3 Chemical Operations  -  741.1 Light/Optics  -  408 Structural Design
  Database:Compendex

40. Accession number:20115014603083
  Title:Design of a four-waveband crop canopy analyzer
  Authors:Li, Xiuhua1 ; Zhang, Feng1 ; Li, Minzan1 ; Zhao, Ruijiao1 ; Li, Shuqiang1 
  Author affiliation:1  Key Laboratory of Modern Precision Agriculture Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
  Corresponding author:Li, M. (limz@cau.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:169-173
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In order to solve the problems encountered in analyzing crop nitrogen concentration by chemical methods, such as high cost, long and complicated process, etc., a new four-waveband crop canopy analyzer was developed based on optical principle to obtain some vegetation indices to evaluate the crop growth status. The analyzer was designed to work as a wireless sensor network with a control unit and a measuring unit. As the coordinator of the whole wireless network, the controller was used to receive, display and store all the data sent from different sensor nodes. The measuring unit which consisted of several optical sensors was designed to collect, amplify and transmit the optical signals. Each sensor node contained four optical channels, which allowed the instrument work at the wavebands of 550 nm, 650 nm, 766 nm and 850 nm. Calibration test was conducted and the result showed a good performance. An experiment in maize field was also performed, and the correlation between measured N and predicted N in crop leaves had high significance with R of 0.884. Those results showed the potential of the instrument in crop nutrition level diagnosis.
  Number of references:8
  Main heading:Crops
  Controlled terms:Chemical analysis  -  Optical sensors  -  Sensor nodes  -  Vegetation
  Uncontrolled terms:Calibration tests  -  Chemical method  -  Control unit  -  Crop canopy  -  Crop growth  -  Crop leaves  -  Crop nitrogen  -  High costs  -  Nitrogen content  -  Nutrition levels   -  Optical channels  -  Optical signals  -  Vegetation index  -  Vegetation indices  -  Wavebands
  Classification code:722 Computer Systems and Equipment  -  801 Chemistry  -  804 Chemical Products Generally  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.4 Agricultural Products
  Database:Compendex

41. Accession number:20115014603094
  Title:Fabrication of the liposome microarrays based on the ultrasonic focusing microjet system
  Authors:Han, Xin1 ; Zhang, Bo2 ; Li, Sun3 ; Zhang, Deyuan3 
  Author affiliation:1  School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
                 2  China Aeronautical Project and Design Institute, Beijing 100120, China
                 3  Bionic and Micro/Nano/Bio Manufacturing Technology Research Center, Beihang University, Beijing 100191, China
  Corresponding author:Han, X. (hanxin@sdut.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:231-234
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Focusing on the problems existing in the biochip microarray manufacturing methods such as low maintenance in bioactivity, microjet head blockage and high consumption in biological reagent and so on, the ultrasonic transducer and spherical acoustic lens based on ultrasonic focusing microjet head as well as the downward isolated jetting mechanism was designed. Based on this, no nozzle, non blockage, non contact, low consumption and high accuracy was gained in the microarray manufacture. To verify the biocompatibility of the microjet system, the F0F1-ATP molecular-motor assembled liposome microarrays with regular shape and accurate location was prepared. Furthermore, the ATP hydrolysis activity and the ATP synthesis activity of the liposome microarrays were tested respectively. Experimental results indicated that the liposome microarrays fabricated this way showed favorable ATP hydrolysis activity and synthesis activity, which confirmed that the ultrasonic focusing microjet method has favorable biocompatibility in manufacturing biological microarrays. The investigation elaborated here explored a new manufacturing approach for biological microarrays.
  Number of references:9
  Main heading:Bioassay
  Controlled terms:Biochips  -  Biocompatibility  -  Focusing  -  Hydrolysis  -  Liposomes  -  Manufacture  -  Microarrays  -  Ultrasonic transducers
  Uncontrolled terms:Accurate location  -  Acoustic lens  -  ATP synthesis  -  ATP-hydrolysis activity  -  Low consumption  -  Low maintenance  -  Manufacturing methods  -  Micro-jet  -  Micro-jet system  -  Non-contact   -  Ultrasonic focusing
  Classification code:461 Bioengineering and Biology  -  537.1 Heat Treatment Processes  -  711.1 Electromagnetic Waves in Different Media  -  753.2 Ultrasonic Devices  -  801 Chemistry  -  802.2 Chemical Reactions
  Database:Compendex

42. Accession number:20115014603074
  Title:Catalytic removal of pyrethroid pesticides in apple juice by ultrasonic treatment coupling with TiO2
  Authors:Yuan, Yahong1 ; Wang, Zhouli1 ; Cai, Rui1 ; Guo, Kangquan2 ; Yue, Tianli1 ; Zhou, Zhengkun1 
  Author affiliation:1  College of Food Science and Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
                 2  College of Mechanical and Electric Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
  Corresponding author:Yue, T. (yuetl@nwsuaf.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:124-129
  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 catalytic removal function and mechanism of ultrasonic treatment coupling with TiO2 on pyrethroid pesticides in apple juice were investigated, the main quality change of apple juice and mechanism of catalytic removal were researched. The response surface method was applied to optimize the process parameters and the results were as follows: the TiO2 amount was 0.5 g/L, the ultrasonic power was 416 W, the treatment time was 18 min, the ultrasonic temperature was 37°C. Under this condition, the removal rate would reach to 62.17%. The main chemical and physical indexes of apple juice processed by ultrasonic treatment coupling with TiO2 have no significant change, all accord with the export standards of apple juice.
  Number of references:17
  Main heading:Fruits
  Controlled terms:Fruit juices  -  Pesticides  -  Titanium dioxide  -  Ultrasonic equipment
  Uncontrolled terms:Apple juice  -  Catalytic removal  -  Process parameters  -  Pyrethroid pesticide  -  Quality change  -  Removal rate  -  Response surface method  -  TiO  -  Treatment time  -  Ultrasonic power   -  Ultrasonic treatment coupling with TiO2  -  Ultrasonic treatments
  Classification code:753.2 Ultrasonic Devices  -  803 Chemical Agents and Basic Industrial Chemicals  -  804.2 Inorganic Compounds  -  821.4 Agricultural Products  -  822.3 Food Products
  Database:Compendex

43. Accession number:20115014603069
  Title:Energy evaluation of straw-based power generation system
  Authors:Liu, Huacai1, 2 ; Yin, Xiuli1 ; Wu, Chuangzhi1 
  Author affiliation:1  Key Laboratory of Renewable Energy and Natural Gas Hydrate, Chinese Academy of Sciences, Guangzhou 510640, China
                 2  Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  Corresponding author:Yin, X. (xlyin@ms.giec.ac.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:42
  Issue:11
  Issue date:November 2011
  Publication year:2011
  Pages:93-98 123
  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:Energy analysis was applied to evaluate three typical straw-based power generation systems: 1 MW gasification and power generation system, 5.5 MW gasification and power generation system, and 25 MW combustion and power generation system. Based on the concepts of energy costs and energy benefits, two indicators were employed: environmental yield ratio (EYR) and net energy. The results show that the 5.5 MW system is the most efficient one in recovering energy from straw (the highest EYR) and is capable of saving the greatest quantity of energy per MJ of straw used (the highest net energy); the 1 MW system is the best one in terms of energy costs, but the worst in terms of energy benefits. Compared with the 1 MW system, the 25 MW system has a lower EYR but higher net energy.
  Number of references:40
  Main heading:Gas generators
  Controlled terms:Biomass  -  Energy management  -  Gasification  -  Sustainable development
  Uncontrolled terms:Energy  -  Energy analysis  -  Energy benefits  -  Energy cost  -  Energy evaluation  -  Net energy  -  Power generation systems  -  Recovering energy  -  Yield ratios
  Classification code:522 Gas Fuels  -  525 Energy Management and Conversion  -  525.1 Energy Resources and Renewable Energy Issues  -  802.3 Chemical Operations  -  911.2 Industrial Economics
  Database:Compendex
  Compilation and indexing terms, ? 2011 Elsevier Inc.
  ? 2011 Elsevier Inc. All rights reserved.