1.   Accession number:  20092712172613

Title:  Effects of vacuum and modified atmosphere packaging on shelf life of salted pike eel (Muraenesox cinereus) fillets

Authors:  Zhang, Yinliang1 ; Mao, Duobin1 

Author affiliation:  1  School of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China

Corresponding author:  Zhang, Y. (zhyinliang@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  270-274

Language:  English

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  The purpose of the study was to evaluate the shelf life of salted pike eel packaged with air, vacuum and modified atmosphere at 25°C. The samples were divided into four treatments: packaged with air(the controlr, M1), vacuum(M2), CO2/N2(40%/60%, M3) and CO2(M4), which were monitored the indexs of Total Volatile Base Nitrogen(TVB-N), Trimethylamine (TMA), pH value, Thiobarbituric Acid-Reactive Substances(TBARS) and Total Viable Counts (TVC). The shelf life of salted pike eel was found to be 20 days with Modified-Atmosphere Packaging(MAP), 19 days with vacuum packaging(VP), 16 days with air packaging. Bacteria grew most quickly in salted pike eel packaged with air (M1), and the lowest counts of bacteria were found in the sample with MAP(M4). The formation of TVB-N increased with time of storage. The change of TMA-N value was similar to that of TVB-N. The sensory quality of salted pike eel in MAP groups was significantly (P<0.05) higher than that of the control group. The MAP and VP were more effective package for preservation of salted pike eel than other treatments, especially packaging with 100% CO2.

Number of references:  28

Main heading:  Quality control

Controlled terms:  Bacteriology  -  Quality assurance  -  Quality function deployment  -  Thermoanalysis  -  Total quality management  -  Vacuum  -  Vacuum technology

Uncontrolled terms:  Atmosphere packaging  -  Control groups  -  Modified atmosphere  -  Modified atmosphere packaging  -  N value  -  pH value  -  Pike eel  -  Sensory qualities  -  Shelf life  -  Thiobarbituric acid-reactive substances   -  Total viable counts  -  Trimethylamine  -  Vacuum packaging

Classification code:  922.2 Mathematical Statistics  -  913.3 Quality Assurance and Control  -  912.2 Management  -  801.2 Biochemistry  -  801 Chemistry  -  633 Vacuum Technology  -  461.9 Biology

DOI:  10.3969/j.issn.1002-6819.2009.05.050

Database:  Compendex

  2.   Accession number:  20092712172618

Title:  Effects of starch on rheological and gel properties of horse-mackerel surimi

Authors:  Chen, Haihua1 ; Xue, Changhu1 

Author affiliation:  1  College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China

Corresponding author:  Chen, H. (haihchen@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  293-298

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  To investigate the optimum kind and addition level of starch in order to improve the gel qualitiy of horse-mackerel surimi, effects of starch on the rheological and gel properties of horse-mackerel surimi were determined by rheological analysis, texture analysis, whiteness, water-holding capacity and microstructure. Two stages of changes of elastic modulus G' during heating process indicated two stages of thermal denaturation for horse-mackerel surimi by rheological measurement. The first change of G' appeared at the range of 20~57°C (the G' was decreased with the in crease of temperature), and the second change of G' appeared at the range of 57~80°C, the G' was increased with the increase of temperature which indicated that protein began to form gelation network. Addition of starch had positive effects on the elastic modulus G' of horse-mackerel surimi for starch molecules entangled much stronger. The gel strength of horse-mackerel surimi was increased with addition of starch. Tapioca starch and wheat starch had significantly positive effect on the gel properties of horse-mackerel surimi which was increased by 158% and 155%, with 4% of starch addition amount, respectively. Addition of starch increased the water-holding capacities of surimi, among which tapioca starch and wheat starch had the most significantly positive effect. Addition of starch increased the whiteness of surimi significantly, but the kind and addition of starch showed no significant difference.

Number of references:  20

Main heading:  Starch

Controlled terms:  Coagulation  -  Elastic moduli  -  Food processing  -  Gelation  -  Gels  -  Microstructure  -  Pyrolysis  -  Rheology  -  Water analysis

Uncontrolled terms:  Gel properties  -  Gel strengths  -  Heating process  -  Horse-mackerel  -  Positive effects  -  Rheological analysis  -  Rheological measurements  -  Rheological properties  -  Starch addition  -  Starch molecules   -  Surimi  -  Tapioca starch  -  Texture analysis  -  Thermal denaturations  -  Two stage  -  Water holding capacity  -  Wheat starch

Classification code:  951 Materials Science  -  802.3 Chemical Operations  -  804 Chemical Products Generally  -  804.1 Organic Compounds  -  815.1.1 Organic Polymers  -  822.2 Food Processing Operations  -  822.3 Food Products  -  931.1 Mechanics  -  933 Solid State Physics  -  802.2 Chemical Reactions  -  421 Strength of Building Materials; Mechanical Properties  -  422.2 Test Methods  -  445.2 Water Analysis  -  801.4 Physical Chemistry  -  531.2 Metallography  -  801 Chemistry  -  801.3 Colloid Chemistry  -  631.1 Fluid Flow, General

Database:  Compendex

  3.   Accession number:  20092712172579

Title:  Data structure and model algorithm of fault diagnosis system of diesel engine

Authors:  Zheng, Fatai1 ; Guo, Junjie2 

Author affiliation:  1  Department of Mechanic Electronic and Engineering, Zhejiang Business Technology Institute, Ninbo 315012, China

2  School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Corresponding author:  Zheng, F. (zftzxn@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  78-82

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to realize the minimization of fault diagnosis system of diesel engine and generalization of system-level diagnosis model, a data structure and a model algorithm of fault diagnosis system of diesel engine were presented, which were mainly embodied in machinery fault diagnosis data processing based on extensive research on the algorithm of characteristic value extraction, the algorithm of main characteristic value extraction and the neural network expert system. The software package of machinery fault diagnosis system (MFDS) was developed in combination with MATLAB toolkit. 6135 diesel engine was used for the test. The measured values were studied and diagnosed by MFDS. The results showed that the fault diagnosis system could be used to give the diagnosis results quickly and accurately. The study has practical significance to improve the fault diagnosis theory and level of complicated machinery such as diesel engine.

Number of references:  14

Main heading:  Diesel engines

Controlled terms:  Algorithms  -  Data processing  -  Data structures  -  Engines  -  Expert systems  -  Failure analysis  -  Fault tolerant computer systems  -  Industrial research  -  Mathematical models  -  MATLAB   -  Model structures  -  Neural networks

Uncontrolled terms:  Characteristic value  -  Fault diagnosis  -  Fault diagnosis systems  -  Machinery faults  -  Main characteristics  -  MATLAB toolkit  -  Model algorithms  -  Neural network expert system  -  System-level diagnosis

Classification code:  921 Mathematics  -  723.1.1 Computer Programming Languages  -  723.2 Data Processing and Image Processing  -  723.3 Database Systems  -  723.4 Artificial Intelligence  -  723.4.1 Expert Systems  -  723.5 Computer Applications  -  901.3 Engineering Research  -  912.1 Industrial Engineering  -  723 Computer Software, Data Handling and Applications  -  408 Structural Design  -  421 Strength of Building Materials; Mechanical Properties  -  461.1 Biomedical Engineering  -  722.4 Digital Computers and Systems  -  612 Engines  -  617.3 Steam Engines  -  654.2 Rocket Engines  -  612.2 Diesel Engines

Database:  Compendex

  4.   Accession number:  20092712172587

Title:  Trajectory tracking of particle material motion on sieve surface based on Mean shift algorithm

Authors:  Li, Yaoming1 ; Zhao, Zhan1 ; Zhang, Wenbin1 ; Li, Hongchang1 

Author affiliation:  1  Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China

Corresponding author:  Zhao, Z. (zzfoxmail@sina.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  119-122

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  For tracking target particles' motion on air-and-screen cleaning sieve, staining method was used and Mean shift algorithm utilizing the color eigenvector was proposed. Bhattacharyya coefficient was exploited to decide whether the target was occluded. In the frames of regular tracking, the initial point of Mean shift algorithm was predicted by Kalman filter and then the precise position of the target was calculated with Mean shift algorithm. When the occlusion appears, the target motion was regared as a time-invariant system and the position was estimated by Kalman filter. Experiment results show that the algorithm is robust and can track the fast motion target stably with complex background and variant light. The usefull image detection technology was provided for motion law research of granular materials.

Number of references:  16

Main heading:  Target tracking

Controlled terms:  Air cleaners  -  Algorithms  -  Image processing  -  Imaging systems  -  Invariance  -  Kalman filters  -  Sieves  -  Targets  -  Vector quantization

Uncontrolled terms:  Bhattacharyya coefficient  -  Complex background  -  Eigenvector  -  Image detection  -  Initial point  -  Kernel function  -  Mean shift  -  Mean shift algorithm  -  Motion law  -  Motion target   -  Particle materials  -  Path tracking  -  Precise position  -  Screen cleaning  -  Staining method  -  Surface-based  -  Target motions  -  Time invariant systems  -  Trajectory tracking

Classification code:  723 Computer Software, Data Handling and Applications  -  723.2 Data Processing and Image Processing  -  731.1 Control Systems  -  741 Light, Optics and Optical Devices  -  746 Imaging Techniques  -  802.1 Chemical Plants and Equipment  -  921 Mathematics  -  921.1 Algebra  -  932.1.1 Particle Accelerators  -  716.2 Radar Systems and Equipment  -  405.1 Construction Equipment  -  451.2 Air Pollution Control  -  502.2 Mine and Quarry Equipment  -  605 Small Tools and Hardware  -  651.2 Wind Tunnels  -  654.1 Rockets and Missiles  -  656.1 Space Flight  -  703.2 Electric Filters  -  716.1 Information Theory and Signal Processing

Database:  Compendex

  5.   Accession number:  20092712172611

Title:  Effect of ozone in combination with antagonistic yeast on postharvest gray mold rot incidence in strawberry fruits

Authors:  Zhang, Hongyin1 ; Ma, Longchuan1 ; Jiang, Song1 ; Dong, Ying1 ; Zheng, Xiaodong2 

Author affiliation:  1  College of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China

2  Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310029, China

Corresponding author:  Zhang, H. (zhanghongyin126@126.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

 Pages:  258-263

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to search for an alternative to synthetic fungicides for the control of postharvest decay of strawberry fruits, the potential of using ozone in combination with Cryptococcus laurentii (Kufferath) Skinner for the control of postharvest gray mold rot incidence of strawberry fruits was investigated. The results showed that ozone signi?cantly decreased the incidence of gray mold rot in strawberry fruits and inhibited the growth of B. cinerea in vivo and in vitro. After three-day storage, the gray mold rot incidence of strawberry fruits that treated with the combination of ozone and C. laurentii was 29.63%, which was significantly lower than that of the control (70.37%) or the treatments of ozone and C. laurentii as single use (48.15% and 44.44% respectively). The population of the yeast in wounded fruits increased remarkably after inoculation at 20°C or 4°C, and it remained at a high level. The treatments of ozone alone or in combination with C. laurentii resulted in a transient increase in the activities of polyphenoloxidase, peroxidase, phenylalanine ammonialyase, catalase, lipoxgenase and β-1,3-glucanase, and restrained the increase in the activity of lipoxgenase in strawberry fruits.

Number of references:  28

Main heading:  Fruits

Controlled terms:  Amino acids  -  Biocontrol  -  Molds  -  Ozone  -  Yeast

Uncontrolled terms:  Antagonistic yeast  -  Cryptococcus laurentii  -  Glucanase  -  Gray mold rots  -  In-vitro  -  In-vivo  -  Kufferath  -  Phenylalanine ammonia-lyase  -  Polyphenol oxidase  -  Postharvest   -  Postharvest diseases  -  Strawberry  -  Strawberry fruits

Classification code:  822.3 Food Products  -  821.4 Agricultural Products  -  818.4 Rubber Factories and Machinery  -  816.2 Plants and Machinery for Plastics and Other Polymers  -  812.3 Glass  -  804.1 Organic Compounds  -  804 Chemical Products Generally  -  801.2 Biochemistry  -  731.1 Control Systems  -  535.2.1 Metal Forming Machines  -  462.4 Prosthetics  -  461.1 Biomedical Engineering  -  461 Bioengineering and Biology

Database:  Compendex

  6.   Accession number:  20092712172573

Title:  Relationship between mechanical characteristics and anatomical structures of slope protection plant root

Authors:  Zhu, Haili1 ; Hu, Xiasong1, 2 ; Mao, Xiaoqing3 ; Li, Guorong1 ; Zhang, Xingling3 ; Chen, Guichen2 

Author affiliation:  1  Geological Engineering Department, Qinghai University, Qinghai 810016, China

2  Northwest Plateau Institute of Biology, The Chinese Academy of Sciences, Qinghai 810007, China

3  Hydraulic and Electric Power Engineering Department, Qinghai University, Qinghai 810016, China

Corresponding author:  Hu, X.

Pages:  40-46

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Taking Xining basin as example, the single root tensile tests, shear tests and roots anatomical tests of five species of shrub were carried out to study the relationship between mechanical characteristics of shrub roots and roots anatomical structures in the loess area of northeast Qinghai-Tibet plateau. The results showed that the main factors affected tensile and shear strength of single root including the percentage of phloem fibers and wood fibers, the degree and speed of periderm lignification. The shrubs single root elongation rate varied directly as the area percentage of secondary phloem, varied inversely as the area percentage of xylem. For five species of shrub, the largest area percentage of secondary phloem is Caragana korshinskii and reached 45% showing great single root elongation rate; the largest area percentage of xylem is Atriplex canescens and reached 50% reflecting the better mechanical characteristics. According to the root mechanical characteristics and root anatomical features, Atriplex canescens and Caragana korshinskii have a significant function in slope protection in Qinghai-Tibet plateau loess area.

Number of references:  23

Main heading:  Shear strength

Controlled terms:  Fibers  -  Slope protection  -  Tensile strength  -  Tensile testing  -  Wood products

Uncontrolled terms:  Anatomical features  -  Anatomical structures  -  Caragana Korshinskii  -  Loess area  -  Mechanical characteristics  -  Phloem fibers  -  Plant roots  -  Qinghai Tibet plateau  -  Root elongation  -  Shear tests   -  Tensile tests  -  Wood fiber  -  Wood fibers

Classification code:  817 Plastics and Other Polymers: Products and Applications  -  812 Ceramics, Refractories and Glass  -  811.2 Wood and Wood Products  -  483.1 Soils and Soil Mechanics  -  819.4 Fiber Products  -  441.1 Dams  -  422 Strength of Building Materials; Test Equipment and Methods  -  421 Strength of Building Materials; Mechanical Properties  -  407.1 Maritime Structures  -  422.2 Test Methods

Database:  Compendex

  7.   Accession number:  20092712172622

Title:  O2-supplying characteristics of Azolla in controlled close chamber under manned condition

Authors:  Chen, Min1 ; Deng, Sufang1 ; Yang, Youquan1 ; Liu, Zhongzhu1 

Author affiliation:  1  Agricultural Ecology Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China

Corresponding author:  Chen, M. (chenmin863@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  313-316

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Azolla has high growth and propagation rate, strong photosynthetic O2-releasing ability and rich nutrient value. It is able to be used as salad-type vegetable, and can also be cultured on wet bed in multi-layer condition. Hence, it possesses a potential functioning as providing O2, fresh vegetable and absorbing CO2 for Controlled Ecological Life Support System in space. In this study, we try to make clear the O2-providing characteristics of Azolla in controlled close chamber under manned condition in order to lay a foundation for Azolla as a biological component in the next ground simulated experiment and space application. A controlled close test chamber and Azolla wet-culturing devices were built to measure the changes of atmospheric O2-CO2 concentration inside chamber under "Azolla-men" coexisting condition. The results shows that, at 7000-9000 Lx of artificial light intensity, Azolla were grown under wet-culturing condition, people respiration and Azolla photosynthesis complemented each other, the atmospheric O2-CO2 concentration inside chamber maintained equilibration. According to theoretical calculation, about 10 m2 Azolla can basically meet an astronaut' needs of O2. Elevated atmospheric CO2 concentrations in close chamber have obvious effects on enhancing Azolla net photosynthesis efficiency. This shows that Azolla has strong photosynthetic O2-releasing ability, which equilibrates the O2-CO2 concentration inside chamber in favor of human survival, and then verifies the prospect of Azolla in space application.

Number of references:  18

Main heading:  Oxygen supply

Controlled terms:  Concentration (process)  -  Life support systems (spacecraft)  -  Photosynthesis  -  Space applications

Uncontrolled terms:  Artificial light  -  Atmospheric CO  -  Azolla  -  Biological components  -  Controlled close chamber  -  Fresh vegetables  -  High growth  -  Human survival  -  Life support systems  -  Manned test   -  Nutrient values  -  Propagation rate  -  Simulated experiments  -  Test chambers  -  Theoretical calculations  -  Wet bed  -  Wet-culture

Classification code:  804 Chemical Products Generally  -  802.3 Chemical Operations  -  802.2 Chemical Reactions  -  741.1 Light/Optics  -  672.1 Combat Naval Vessels  -  656 Space Flight  -  655.1 Spacecraft, General  -  652.1 Aircraft, General  -  545.3 Steel

Database:  Compendex

  8.   Accession number:  20092712172571

Title:  Effect of irrigation quota on soil nitrate nitrogen concentration under surge irrigation

Authors:  Yin, Juan1, 2 ; Fei, Liangjun3 ; Zhu, Yuefa4 

Author affiliation:  1  College of Civil and Conservancy Engineering, Ningxia University, Yinchuan 750021, China

2  Certer of Efficient Irrigation Engineering and Water Resource Control Technology Research, Ningxia University, Yinchuan 750021, China

3  Institute of Water Resources, Xi'an University of Technology, Xi'an 710048, China

4  Ningxia Tang Lai Ditch Adninistrative Bureau, Yinchuan 750005, China

Corresponding author:  Yin, J. (yj7115@126.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  30-34

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  To study the effects of irrigation quota on nitrate nitrogen transport in the groundwater, based on indoor experiments of fertile solution infiltration, the effects of irrigation quota on the influence of groundwater quality under the condition of 150 cm groundwater level depth were studied. The results showed that the nitrate nitrogen concentration in the underwater under different irrigation quota treatments had similar tendency, nitrate nitrogen concentration increased with decreasing of groundwater depth, that was to say shallow groundwater was vulnerable polluted by nitrate nitrogen; the maximum concentration of the nitrate nitrogen in the groundwater was appeared at the end of irrigation; the nitrate nitrogen concentration in groundwater increased with the time lengthening under the same irrigation quota; the nitrate nitrogen concentration increment in groundwater increased with increasing of irrigation quota. The more the irrigation quota is, the more seriously the nitrate nitrogen pollutes.

Number of references:  20

Main heading:  Irrigation

Controlled terms:  Concentration (process)  -  Groundwater  -  Groundwater pollution  -  Groundwater resources  -  Hydrogeology  -  Light measurement  -  Nitrates  -  Nitrogen  -  Seepage  -  Soil mechanics   -  Water quality

Uncontrolled terms:  Concentration of  -  Ground water level  -  Groundwater quality  -  Indoor experiment  -  Intermittent infiltration  -  Irrigation quota  -  Irrigation quotas  -  Nitrate nitrogen  -  Shallow groundwater  -  Solution infiltration   -  Surge irrigation

Classification code:  941.4 Optical Variables Measurements  -  821.3 Agricultural Methods  -  804.2 Inorganic Compounds  -  804 Chemical Products Generally  -  802.3 Chemical Operations  -  483.1 Soils and Soil Mechanics  -  481.1 Geology  -  453.2 Water Pollution Control  -  453.1 Water Pollution Sources  -  445.2 Water Analysis  -  444.2 Groundwater  -  441 Dams and Reservoirs; Hydro Development  -  407 Maritime and Port Structures; Rivers and Other Waterways

Database:  Compendex

  9.   Accession number:  20092712172599

Title:  Estimation of non-point source pollution load in Tumenxigou watershed of Miyun Reservoir

Authors:  Zhang, Yan1 ; Zhang, Zhiqiang1 ; Zhang, Junqing1 ; Xie, Baoyuan1 ; Wu, Bin1 ; Wang, Li1 ; Tang, Yin1 ; Liu, En1 ; Qin, Wei1 ; Cheng, Tao1 ; Shi, Honglong2 

Author affiliation:  1  Key Laboratory of Soil and Water Conservation and Desertification Combating, Beijing Forestry University, Beijing 100083, China

2  Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Corresponding author:  Zhang, Z. (zhiqiangzh@bifu.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  183-191

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Water quality of Miyuan Reservoir affects water quality of the surface drinking water sources in Beijing. At present, non-point source pollution is a major contributor to water quality decline in Miyuan Reservoir with the point source pollution efficiently controlled. To meet the needs of the water resources protection, six runoff plots with different soil and water conservation measures were chosen in Tumenxigou small watershed of the reservoir basin, namely, chestnut (Castanea mollissima Bl.) economic forest, Chinese pine (Pinus tabulaeformis Carr.) plantation, Chinese pine (Pinus tabulaeformis Carr.) and blacklocust (Robinia pseudoacacia Linn.) mixed forest, shrub (Vitex negundo Linn. var. heterophylla Rehd.), and maize agriculture land, then pollutant concentration and overland discharge under runoff generating rainfall events were monitored in 2007. Non-point source pollution load and spatial distribution of soil erosion within the watershed were estimated and mapped by using RUSLE and SCS method integrated with ArcGIS tools. The results showed that non-point source pollution was mainly generated by soil erosion with pollutant absorbed in the soil particles. Of all different soil and water conservation measures, the order pollutant load per unit area is economic forest>broadleaf forest>shrub>coniferous forest>mixed forest and farmland. Therefore, land use planning in this region to control soil erosion should be developed by reducing economic forest, increasing broadleaf and coniferous mixed forest, sustaining existing terrace field, forbidding growing crops on steep slopes, adopting terrace mode at the slope toe and channel system in order to control the non-point source pollution. In contrast with the general conclusion drawn by other similar research, the non-point source pollution of the farmland is lesser than woodland due to large infiltration capacity (small overland flow contribution) and organic fertilizer applied for growing crops.

Number of references:  29

Main heading:  Soil pollution

Controlled terms:  Agricultural runoff  -  Crops  -  Erosion  -  Fertilizers  -  Forestry  -  Land use  -  Landforms  -  Plants (botany)  -  Potable water  -  Reservoirs (water)   -  Size distribution  -  Soil conservation  -  Soil pollution control  -  Soils  -  Surface waters  -  Water conservation  -  Water pollution  -  Water quality  -  Watersheds

Uncontrolled terms:  Broadleaf forest  -  Castanea mollissima  -  Channel systems  -  Coniferous forests  -  Infiltration capacity  -  Land Use Planning  -  Mixed forests  -  Miyun Reservoir  -  Non-point source pollution  -  Organic fertilizers   -  Overland flow  -  Per unit  -  Pinus tabulaeformis  -  Point source pollution  -  Pollutant concentration  -  Pollutant loads  -  Rainfall event  -  Robinia pseudo-acacia  -  Small watershed  -  Small watersheds   -  Soil and water conservation  -  Soil erosion  -  Soil particles  -  Spatial distribution  -  Steep slope  -  Surface drinking water  -  Vitex negundo

Classification code:  933.1 Crystalline Solids  -  804 Chemical Products Generally  -  539.1 Metals Corrosion  -  531.2 Metallography  -  483.1 Soils and Soil Mechanics  -  483 Soil Mechanics and Foundations  -  481.1 Geology  -  821.0 Woodlands and Forestry  -  821.3 Agricultural Methods  -  821.4 Agricultural Products  -  821.5 Agricultural Wastes  -  922.2 Mathematical Statistics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  821.2 Agricultural Chemicals  -  461.9 Biology  -  454.2 Environmental Impact and Protection  -  403 Urban and Regional Planning and Development  -  403.1 Urban Planning and Development  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  423 Non Mechanical Properties and Tests of Building Materials  -  441.2 Reservoirs  -  442.2 Land Reclamation  -  444 Water Resources  -  444.1 Surface Water  -  445.2 Water Analysis  -  453 Water Pollution  -  453.1 Water Pollution Sources  -  453.2 Water Pollution Control

Database:  Compendex

  10.   Accession number:  20092712172602

Title:  Potentialities evaluation of regional land consolidation based on AHP and entropy weight method

Authors:  Ni, Jiupai1 ; Li, Ping1, 2 ; Wei, Chaofu1 ; Xie, Deti2 

Author affiliation:  1  College of Resources and Environment, Southwest University, Chongqing 400715, China

2  Bureau of Land and Resources of Chongqing Province, Chongqing 400015, China

Corresponding author:  Ni, J. (nijiupai@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  202-209

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Multi-hierarchy index system for regional land consolidation was established for cultivated land consolidation, virgin land reclamation, disused land reclamation and country residential area consolidation. And land consolidation potentialities were evaluated based on AHP, entropy weight method and synthetically evaluation method in Chongqing. Results indicated that cultivated land consolidation potentialities were the central portion of land consolidation potentialities, and the ratio of input-output and the improved ratio of woodland for cultivated land consolidation which were primary influencing factors in Chongqing. In the same way, virgin land reclamation potentialities and disused land reclamation potentialities were also the significant portions of land consolidation potentialities and the special scope index for virgin land reclamation and the improved ratio of woodland and special scope index for disused land reclamation, which were similarly important factors in Chongqing. Moreover, country residential area consolidation is important to development in the main city zone and neighbor areas.

Number of references:  14

Main heading:  Land reclamation

Controlled terms:  Analytic hierarchy process  -  Entropy  -  Hierarchical systems  -  Planning  -  Reclamation  -  Regional planning

Uncontrolled terms:  AHP  -  Chongqing province  -  Entropy weight method  -  Environmental assessments  -  Land consolidation  -  Potentialities evaluation

Classification code:  922.2 Mathematical Statistics  -  921 Mathematics  -  912.2 Management  -  731.1 Control Systems  -  961 Systems Science  -  641.1 Thermodynamics  -  442.2 Land Reclamation  -  403.2 Regional Planning and Development  -  403 Urban and Regional Planning and Development  -  452.4 Industrial Wastes Treatment and Disposal

Database:  Compendex

  11.   Accession number:  20092712172581

Title:  Construction and gray evaluation of the performance index system of wheat no-tillage planter

Authors:  Zhao, Liqin1 ; Guo, Yuming2 ; Zhang, Peizeng3 ; Han, Zhanxing3 

Author affiliation:  1  College of Mechanical Engineering and Antomatization, North University of China, Taiyuan 030051, China

2  College of Engineering and Technology, Shanxi Agricultural University, Taigu 030801, China

3  Shanxi Bureau of Agricultural Machinery, Taiyuan 030002, China

Corresponding author:  Zhao, L. (zlq0908@sohu.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  89-93

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  It is significant to investigate more scientific and reasonable wheat no-tillage planter evaluation methods for generalization and application of conservation tillage. The purpose of this paper was to study performance evaluation index system for wheat no-tillage planter. The 2BMF-9 wheat no-tillage planter was taken as an object on the basis of agriculture demand. The meaning and mensuration of every index was expounded, and their weights were determined by methods of expert consulting and AHP. Through dual-factor experiment, eight treatments in different soil-surface conditions were designed. Indices in eight treatments and corresponding emergence seeding ratio and tiller number were measured. Then the classified reference values of indices were educed by analyzing data using gray clustering. The results indicate that the deep eligibility and seed-fertilizer space eligibility are relatively good, seeding uniformity is common, and passing ability and soil-covering ability are below average. Moreover, in order to improve the performance of no-tillage planter, measures should be taken to optimize planter structure and soil-surface treatments for advancing the passing ability and soil-covering ability.

Number of references:  14

Main heading:  Agriculture

Controlled terms:  Agricultural machinery  -  Grain (agricultural product)  -  Soil conservation  -  Soils  -  Surface structure

Uncontrolled terms:  Conservation tillage  -  Evaluation Method  -  Gray evaluation  -  No-tillage planter  -  Passing ability  -  Performance evaluation index  -  Performance indices  -  Reference values  -  Surface conditions  -  Tiller number   -  Wheat no-tillage planter

Classification code:  951 Materials Science  -  931.2 Physical Properties of Gases, Liquids and Solids  -  821.4 Agricultural Products  -  821.3 Agricultural Methods  -  821.1 Agricultural Machinery and Equipment  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  483.1 Soils and Soil Mechanics

Database:  Compendex

  12.   Accession number:  20092812172861

Title:  Optimization of technology for oil extraction from Kosteletzkya virginica seeds by supercritical CO2 fluid

Authors:  Yang, Qingli1, 2, 3 ; Yu, Shanlin3 ; Qin, Song1 

Author affiliation:  1  Institute of Oceanology, The Chinese Academy of Sciences, Qingdao 266071, China

2  Graduate University, The Chinese Academy of Sciences, Beijing 100039, China

3  Chinese National Peanut Engineering Research Center, Qingdao 266100, China

Corresponding author:  Yu, S. (yshanlin1956@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  253-257

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to improve the utilization of Kosteletzkya virginica seeds and develop a new material for biodiesel, Kosteletzkya virginica seeds were taken as raw materials and the supercritical CO2 fluid extraction technology was used to extract seed oil. The single factor experiment and the orthogonal experiment were carried out to study the effects of factors such as extraction pressure, extraction temperature, extraction time and supercritical CO2 flow on oil yield. The optimal technological conditions of oil extraction from Kosteletzkya virginica seeds by supercritical CO2 fluid were determined. The order of factors that influenced the oil yield within the experimental range was as follows: extraction pressure > extraction temperature > supercritical CO2 flow>extraction time. The optimal technological parameters of oil extraction from Kosteletzkya virginica seeds should be as follows: extraction pressure 25MPa, extraction temperature 45°C, supercritical CO2 flow 21 kg/h and extraction time 100 min, and under such conditions, the total oil yield after extraction three times is 19.35%.

Number of references:  16

Main heading:  Extraction

Controlled terms:  Biodiesel  -  Carbon dioxide  -  Effluent treatment  -  Oils and fats  -  Optimization  -  Seed  -  Supercritical fluid extraction  -  Supercritical fluids

Uncontrolled terms:  As extraction  -  Extraction pressure  -  Extraction temperatures  -  Extraction time  -  Fluid extraction  -  Kosteletzkya virginica seeds  -  New material  -  Oil extraction  -  Oil yield  -  Orthogonal experiment   -  Seed oil  -  Supercritical CO  -  Technological conditions  -  Technological parameters

Classification code:  921.5 Optimization Techniques  -  822.3 Food Products  -  821.4 Agricultural Products  -  804.2 Inorganic Compounds  -  931.2 Physical Properties of Gases, Liquids and Solids  -  804.1 Organic Compounds  -  644.2 Refrigerants  -  523 Liquid Fuels  -  452.4 Industrial Wastes Treatment and Disposal  -  802.3 Chemical Operations

Database:  Compendex

  13.   Accession number:  20092812172860

Title:  Effect of inoculum to substrate ratios on methane production in mixed anaerobic digestion of pig manure and blue-green algae

Authors:  Wang, Shouquan1, 2 ; Yan, Qun1, 2 ; Miao, Hengfeng1, 2 ; Ruan, Wenquan1, 2 

Author affiliation:  1  Key Laboratory of Industrial Biotechnology, Jiangnan University, Wuxi 214122, China

2  School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China

Corresponding author:  Ruan, W. (wqruan@jiangnan.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  172-176

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  A laboratory-scale study was conducted on the batch anaerobic digestion of pig manure and blue-green algae using multi-reactor system to compare the methane production from those substrates at different inoculum to substrate ratios (ISRs) of 3.0, 2.0, 1.0, 0.5 and 0.25 at 35°C. The results showed that the ultimate methane yield was the highest when ISRs was 2.0. The biodegradabilities (BD)(%) of the blue-green algae were 46.5, 68.5, 44.8, 29.2 and 14.2 when the ISRs varied from 3.0 to 0.25. The results obtained in the biochemical methane potential(BMP) tests showed that all the processes of methane production accorded with Chynoweth equation with the R2 >0.97. In addition, the parameters of pH value, volatile solids and volatile fatty acids in the fermentation broth were further studied to explain the mechanism of anaerobic digestion as a preliminary research. This study can provide bases for resource utilization of blue-green algae.

Number of references:  24

Main heading:  Anaerobic digestion

Controlled terms:  Biochemical engineering  -  Biodegradability  -  Biodegradation  -  Fatty acids  -  Fertilizers  -  Manures  -  Methane  -  Phytoplankton  -  Substrates

Uncontrolled terms:  Biochemical methane potential  -  Blue-green algae  -  Fermentation broths  -  Inoculum to substrate ratios  -  Laboratory scale  -  Methane production  -  Methane Yield  -  Mixed anaerobic digestion  -  pH value  -  Pig manures   -  Reactor systems  -  Resource utilizations  -  Volatile fatty acids  -  Volatile solid

Classification code:  801 Chemistry  -  801.2 Biochemistry  -  802.2 Chemical Reactions  -  804 Chemical Products Generally  -  804.1 Organic Compounds  -  805.1.1 Biochemical Engineering  -  813.1 Coating Techniques  -  821.2 Agricultural Chemicals  -  821.5 Agricultural Wastes  -  714.2 Semiconductor Devices and Integrated Circuits  -  452.3 Industrial Wastes  -  452.4 Industrial Wastes Treatment and Disposal  -  454 Environmental Engineering  -  461 Bioengineering and Biology  -  461.8 Biotechnology  -  461.9 Biology  -  471 Marine Science and Oceanography  -  522 Gas Fuels  -  712.1 Semiconducting Materials

Database:  Compendex

  14.   Accession number:  20092712172604

Title:  Planning of land consolidation project based on farmland landscape security pattern

Authors:  Li, Hongju1 ; Lin, Jian1 ; Yan, Hongmei2 

Author affiliation:  1  College of Urban and Environmental Sciences, Peking University, Beijing 100871, China

2  Department of Design Management, The Office of South-to-North Water Diversion, Beijing 100053, China

Corresponding author:  Li, H. (guodiyuan@126.com) 

 Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  217-222

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In the land consolidation activities, on the premise of guaranteeing quantity-quality of cultivated land, how to create farmland landscape security pattern according to local conditions by effective technical means has become an urgent problem for land consolidation. Taking Gaoling Town of Miyun County in Beijing land consolidation project as an example, based on applications considered by protecting the safety of water as core, the study analyzes the orientation and the division of the samples region, and proposes a series of engineering technical means such as bio-security, sources isolation, river ecology protection and tests. Results showed that the ecological infrastructure based on the safety of water was mostly route to create farmland landscape security pattern in the plan of land consolidation project.

Number of references:  13

Main heading:  Farms

Controlled terms:  Safety engineering

Uncontrolled terms:  Beijing  -  Bio-security  -  Consolidation projects  -  Cultivated lands  -  Farmland landscape  -  Land consolidation  -  Local conditions  -  River ecology  -  Security pattern  -  Security patterns   -  Urgent problems

Classification code:  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  914 Safety Engineering

Database:  Compendex

  15.   Accession number:  20092712172585

Title:  Experiment of dielectric separation of seeds with different electrode arrangements

Authors:  Zhang, Benhua1, 2 ; Li, Chenghua3 ; Sun, Shiming2 ; Gong, Yuanjuan1 

Author affiliation:  1  College of Engineering, Shenyang Agricultural University, Shengyang 110161, China

2  Heilongjiang Provincial Agricultural Machinery Engineering Scientific Academy, Harbin 150081, China

3  School of Mechanical Engineering, Shenyang Ligong University, Shenyang 110068, China

Corresponding author:  Li, C. (lch@mail.sylu.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  109-114

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to investigate the impact of electrode arrangement on the effect of seed dielectric separation, axial and peripheral electrodes arrangements were adopted on the same separation cylinder. Equal interval group was arranged for paddy seed separation, and paddy seed frequency falling into different groups under different experiment conditions was statistically analyzed, paddy seed distribution after separation was verified. The results of the experiment show that in comparison with peripheral electrodes arrangement, the axial electrode arrangement had a large seed falling angle and a standard deviation for seed distribution, which indicates a large seed disparity for separation. Seed falling satisfied a normal distribution with the axial electrode arrangement, and with the peripheral electrodes arrangement seed falling was not in normal distribution with large repetition errors. Seed collision during separation was reduced significantly with good experiment repeatability which was in favor of seed separation for different grades. The results of this study provide theoretical references for the design of seed dielectric separation equipment.

Number of references:  20

Main heading:  Seed

Controlled terms:  Aberrations  -  Ceramic capacitors  -  Dielectric properties  -  Electrodes  -  Experiments  -  Normal distribution  -  Separation

Uncontrolled terms:  Axial electrodes  -  Electrode arrangement  -  Equal intervals  -  Experiment condition  -  Experimental study  -  Separation equipment  -  Standard deviation

Classification code:  941.4 Optical Variables Measurements  -  941.3 Optical Instruments  -  931.2 Physical Properties of Gases, Liquids and Solids  -  922.1 Probability Theory  -  901.3 Engineering Research  -  821.4 Agricultural Products  -  812.1 Ceramics  -  802.3 Chemical Operations  -  741 Light, Optics and Optical Devices  -  714.1 Electron Tubes  -  708.1 Dielectric Materials  -  704.1 Electric Components  -  701 Electricity and Magnetism

Database:  Compendex

  16.   Accession number:  20092712172569

Title:  Forecast model for wetting front migration distance under furrow irrigation infiltration

Authors:  Nie, Weibo1 ; Ma, Xiaoyi1 ; Wang, Shuli1 

Author affiliation:  1  Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Ministry of Education, Yangling 712100, China

Corresponding author:  Ma, X. (xiaoyimasl@yahoo.com.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  20-25

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to indicate influence factors and migration laws of wetting front under furrow irrigation infiltration. Based on indoor experiment under furrow irrigation infiltration of clay loam and sandy soil, effects of soil bulk density, water depth and initial soil water content on wetting front were analyzed. Linear functional relationship were set up between wetting front vertical and horizontal migration distance and square of infiltration time, wetting front horizontal migration distance and square of infiltration time. The forecast model of wetting front migration distance was set up with the factors such as soil bulk density, water depth and soil initial water content and was verified. The results showed that the model had high accuracy and could be used to forecast the wetting front migration distance under furrow irrigation infiltration, so the results can give reference for improving furrow irrigation technique.

Number of references:  5

Main heading:  Geologic models

Controlled terms:  Clay minerals  -  Forecasting  -  Irrigation  -  Seepage  -  Soil mechanics  -  Soil moisture  -  Underwater soils  -  Water content  -  Wetting

Uncontrolled terms:  AS-soils  -  Clay loams  -  Forecast model  -  Functional relationship  -  Furrow irrigation  -  Indoor experiment  -  Infiltration time  -  Influence factors  -  Migration distance  -  Sandy soils   -  Soil bulk density  -  Soil water content  -  Water depth  -  Wetting front  -  Wetting fronts

Classification code:  931.2 Physical Properties of Gases, Liquids and Solids  -  922.2 Mathematical Statistics  -  921 Mathematics  -  912.2 Management  -  821.3 Agricultural Methods  -  802.3 Chemical Operations  -  483.1 Soils and Soil Mechanics  -  482.2 Minerals  -  481.1 Geology  -  471.1 Oceanography, General  -  444 Water Resources  -  441 Dams and Reservoirs; Hydro Development  -  407 Maritime and Port Structures; Rivers and Other Waterways

Database:  Compendex

  17.   Accession number:  20092712172620

Title:  Construction and management mode of biomass centralized gas supply engineering in rural China

Authors:  Wei, Quanyuan1 ; Wang, Kaijun2 ; Song, Yinghao1 ; Xu, Dongli3 

Author affiliation:  1  Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China

2  Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China

3  Beijing Lianhe Chuangye Construction Engineering Company, Limited, Beijing 100013, China

Corresponding author:  Wang, K. (wkj-iep@vip.163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  303-307

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  This paper emphatically analyzed the reasons that rural biomass gasification stations could not run well at present, brought forward the suggestions of constructing new-type biomass gasification stations in rural areas and their operation and management mode, especially discussed the operation mode of the new-type stations. Points raised in rural gasification gas transmission and distribution system should be focused on centralized gas making pipe network-based transmission and vehicular distribution. Taking governmental guidance, enterprise-led, community participation, multi-building mechanisms into the industry, the professional operation and management mode should be realized in order to address the constraints of biomass gasification technology to promote the key issues.

Number of references:  16

Main heading:  Gasification

Controlled terms:  Biomass  -  Gas engineering  -  Gas generators  -  Gas supply  -  Gases  -  Pyrolysis  -  Rural areas

Uncontrolled terms:  Biomass Gasification  -  Centralized gas making  -  Community participation  -  Gas transmission  -  Key issues  -  Operation and management  -  Operation mode  -  Pipe networks  -  Regional distribution

Classification code:  931.2 Physical Properties of Gases, Liquids and Solids  -  901.4 Impact of Technology on Society  -  901 Engineering Profession  -  821.5 Agricultural Wastes  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  805.1.1 Biochemical Engineering  -  802.3 Chemical Operations  -  802.2 Chemical Reactions  -  802.1 Chemical Plants and Equipment  -  619.1 Pipe, Piping and Pipelines  -  525.1 Energy Resources and Renewable Energy Issues  -  522 Gas Fuels  -  403.2 Regional Planning and Development

Database:  Compendex

  18.   Accession number:  20092712172616

Title:  Preparation and properties of biodegradable plastics prepared by using corn gluten meal

Authors:  Chen, Ye1 ; Wang, Guanyu1 ; Du, Yue1 

Author affiliation:  1  Key Laboratory of Food Nutrition and Safety, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China

Corresponding author:  Chen, Y. (chenye@tust.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  284-287

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Corn Gluten Meal (CGM), is a byproduct from the wet milling of corn to yield starch. In order to utilize the CGM to produce the biodegradable plastics, the CGM was blended with glycerol which was used as the plasticizer, the mixture was extruded into pellets by the single-screw extruder, and then the pellets were hot-pressed as the specimens. The properties of the specimens were evaluated. The results showed that the specimens containing 20% of glycerol had the better mechanical properties. The established equation based on Halsey equation could predict the relationship between the tensile strength and relative humidity, and the experimental data fitted the equation well. Observation results using Scanning Electron Microscopy (SEM) showed that the specimen had a uniform structure. The results of Thermal Gravimetric Analysis (TGA) showed that the specimen could keep thermal stability below 170°C.

Number of references:  17

Main heading:  Atmospheric humidity

Controlled terms:  Biodegradable polymers  -  Biopolymers  -  Elastomers  -  Extruders  -  Extrusion  -  Gas burners  -  Glycerol  -  Gravimetric analysis  -  Mechanical properties  -  Moisture   -  Moisture determination  -  Pelletizing  -  Plasticity  -  Plasticizers  -  Plastics  -  Scanning electron microscopy  -  Strength of materials  -  Tensile strength

Uncontrolled terms:  Biodegradable plastics  -  Corn gluten meal  -  Equation based  -  Equilibrium moisture content  -  Experimental data  -  Halsey equation  -  Preparation and properties  -  Relative humidities  -  SEM  -  Single screw extruder   -  Thermal gravimetric analysis  -  Thermal stability  -  Uniform structure  -  Wet milling

Classification code:  951 Materials Science  -  815.1 Polymeric Materials  -  804.1 Organic Compounds  -  803 Chemical Agents and Basic Industrial Chemicals  -  802.3 Chemical Operations  -  801.4 Physical Chemistry  -  801.2 Biochemistry  -  816.1 Processing of Plastics and Other Polymers  -  817.1 Polymer Products  -  818.2 Elastomers  -  931.1 Mechanics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  944.2 Moisture Measurements  -  816.2 Plants and Machinery for Plastics and Other Polymers  -  801 Chemistry  -  741.1 Light/Optics  -  421 Strength of Building Materials; Mechanical Properties  -  422 Strength of Building Materials; Test Equipment and Methods  -  443.1 Atmospheric Properties  -  454 Environmental Engineering  -  461.2 Biological Materials and Tissue Engineering  -  521.3 Fuel Burners  -  522 Gas Fuels  -  533.1 Ore Treatment  -  535.2.1 Metal Forming Machines  -  535.2.2 Metal Forming Practice  -  642.2 Industrial Furnaces and Components  -  643.2 Space Heating Equipment and Components

Database:  Compendex

  19.   Accession number:  20092712172606

Title:  Experiment of drying rapeseed by spouted bed with a porous branch rotating draft tube

Authors:  Liu, Weimin1 ; Liu, Jun1 ; Zhang, Pengcheng1 ; Zhao, Jiewen1 

Author affiliation:  1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China

Corresponding author:  Liu, W. (liuwmwu@ujs.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  228-233

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  For improving drying performance of annulus region in rotating draft tube spouted bed (RDTSB), a novel porous branch rotating draft tube spouted bed (PBRDTSB) was designed and tested with rapeseed. Taking heat consumption per kilogram water, the maximum temperature and average temperature of rapeseed in the drying process as criteria respectively, a scheme of orthogonal experiment with four factors and four levels was given and tested. For heat consumption per kilogram water, the optimum technological parameters were 130.0°C of hot air temperature, 58.0 m3/h of normal air flow rate, 75.0 mm of distance between draft tube and spouted jet and 67.0% of opened pore percentage. The optimum heat consumption per kilogram water was 2736.8 kJ, less than the RDTSB's 3941.4 kJ. The results show that the introduction of the porous branch can reduce heat consumption of drying, and it should be considered for scaling up conventional spouted bed.

Number of references:  19

Main heading:  Hydraulic structures

Controlled terms:  Curing  -  Dewatering  -  Regression analysis  -  Rotation  -  Tubes (components)

Uncontrolled terms:  Air flow-rate  -  Average temperature  -  Draft tube spouted bed  -  Draft tubes  -  Drying performance  -  Drying process  -  Heat consumption  -  Hot air temperature  -  Maximum temperature  -  Orthogonal experiment   -  Porous branch rotating draft tube  -  Rapeseed  -  Regression model  -  Scaling-up  -  Spouted bed  -  Technological parameters

Classification code:  931.1 Mechanics  -  619.1 Pipe, Piping and Pipelines  -  802.2 Chemical Reactions  -  802.3 Chemical Operations  -  815.1 Polymeric Materials  -  818.3 Rubber and Elastomer Processing  -  922.2 Mathematical Statistics  -  616.1 Heat Exchange Equipment and Components  -  601.1 Mechanical Devices  -  511.2 Oil Field Equipment  -  446.2 Related Hydraulic Structures  -  441 Dams and Reservoirs; Hydro Development  -  407.2 Waterways  -  611 Hydroelectric and Tidal Power Plants

Database:  Compendex

  20.   Accession number:  20092712172596

Title:  Design and heating performance of solar-assisted heat pump with truncated-cone-type evaporator

Authors:  Lan, Qing1, 2 ; Xia, Chaofeng2 ; Li, Ming2 ; Tang, Runsheng2 ; He, Yongfen2 

Author affiliation:  1  College of Hydraulic and Civil Engineering, China Agricultural University, Beijing 100083, China

2  Solar Energy Research Institute, Yunnan Normal University, Kunming 650092, China

Corresponding author:  Xia, C. (lan6547596@126.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  162-166

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Configuration of the solar-assisted heat pump with an innovative truncated-cone-type evaporator was designed. Mathematical models for parts of every system were set up. The results showed that when the average absorbance of solar radiation of a solar-assisted heat pump with a truncated-cone-type evaporator was 7.2 MJ, the coefficient of performance (COP) of the system was 3.1 under poor solar radiation in December in Kunming, China. When the system absorbed 15.6 MJ of solar radiation, the system's COP could reach 3.8. The results indicate that the solar-assisted heat pump with a truncated-cone-type evaporator has high heating performance and can meet the demands of water supply.

Number of references:  18

Main heading:  Pumps

Controlled terms:  Competition  -  Electromagnetic waves  -  Evaporators  -  Heat pump systems  -  Heating  -  Solar radiation  -  Sun  -  Systems analysis  -  Water supply

Uncontrolled terms:  Absorbance  -  Coefficient of performance  -  Heating performance  -  Performance  -  Solar assisted heat pump  -  Solar-assisted heat pumps  -  System design  -  Truncated-cone-type

Classification code:  961 Systems Science  -  657.2 Extraterrestrial Physics and Stellar Phenomena  -  711 Electromagnetic Waves  -  731.1 Control Systems  -  802.1 Chemical Plants and Equipment  -  911.2 Industrial Economics  -  912.3 Operations Research  -  657.1 Solar Energy and Phenomena  -  642.1 Process Heating  -  641.2 Heat Transfer  -  618.2 Pumps  -  616.1 Heat Exchange Equipment and Components  -  446.1 Water Supply Systems  -  643.1 Space Heating

Database:  Compendex

  21.   Accession number:  20092712172621

Title:  Influence of conservation tillage on greenhouse effect

Authors:  Hu, Lifeng1 ; Li, Hongwen1 ; Gao, Huanwen1 

Author affiliation:  1  Conservation Tillage Research Center, College of Engineering, China Agricultural University, Beijing 100083, China

Corresponding author:  Li, H. (lhwen@cau.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  308-312

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Agriculture is an important source of greenhouse gas emissions. Unreasonable agricultural management increases greenhouse gas emissions and decreases soil absorbed greenhouse gas. The influence of conservation tillage on greenhouse effect comes from two aspects: one is that no tillage can reduce CO2 emission, but the CH4 and N2O emissions are uncertain; the other is that some straw C can release gas into atmosphere and increase greenhouse gas emission, but straw returning can improve carbon sequestration potential and so reduce the total greenhouse gas emissions. Through analyzing the data about soil tillage and straw management on greenhouse gas emission, the research results prove that conservation tillage can reduce greenhouse effect, and can also provide some references for researching agricultural greenhouse effect.

Number of references:  47

Main heading:  Gas emissions

Controlled terms:  Agricultural machinery  -  Agriculture  -  Carbon dioxide  -  Global warming  -  Greenhouse effect  -  Greenhouse gases  -  Greenhouses  -  Leakage (fluid)  -  Soil conservation  -  Soils

Uncontrolled terms:  Agricultural greenhouse  -  Agricultural management  -  Carbon sequestration potential  -  Conservation tillage  -  No tillage  -  Release gas  -  Research results  -  Soil tillage  -  Straw management

Classification code:  644.2 Refrigerants  -  804.1 Organic Compounds  -  804.2 Inorganic Compounds  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.1 Agricultural Machinery and Equipment  -  821.3 Agricultural Methods  -  821.6 Farm Buildings and Other Structures  -  619.1 Pipe, Piping and Pipelines  -  402.1 Industrial and Agricultural Buildings  -  443.1 Atmospheric Properties  -  451 Air Pollution  -  451.1 Air Pollution Sources  -  452.1 Sewage  -  452.3 Industrial Wastes  -  483.1 Soils and Soil Mechanics

Database:  Compendex

  22.   Accession number:  20092712172586

Title:  Numerical simulation of impedance characteristic of low-frequency ultrasonic nozzle for aeroponic culture

Authors:  Ren, Ning1 ; Gao, Jianmin1 

Author affiliation:  1  Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China

Corresponding author:  Gao, J. (gaojianmin_1228@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  115-118

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to accelerate the process of design and manufacturing of low-frequency ultrasonic nozzle for aeroponic culture and reduce its cost of research and development, the circuit diagram of testing principles of its impedance was put forward, and the FEM model of its impedance analysis was developed. The static, modal and harmonic analysis was performed in ANSYS; static capacitance, natural frequencies for the short circuit (resonance) case and the open circuit (anti-resonance) case, dynamic resistance, frequency at half-power point, dynamic inductance and mechanical quality factor were computed via static, modal analysis and harmonic analysis. After the prototype of the nozzle was made, its impedance characteristic was carried out applying impedance analyzer and compared with the results of FEM simulation. The results show that all the parameters can be used as the calculation basis for the design of ultrasonic generator.

Number of references:  10

Main heading:  Mathematical models

Controlled terms:  Atomization  -  Atomizers  -  Computer simulation  -  Dynamic mechanical analysis  -  Finite element method  -  Fourier series  -  Harmonic analysis  -  Industrial research  -  Modal analysis  -  Nozzles   -  Resonance  -  Ultrasonics

Uncontrolled terms:  Aeroponic culture  -  Anti-resonance  -  Circuit diagrams  -  Dynamic resistance  -  FEM models  -  FEM simulations  -  Impedance analysis  -  Impedance analyzer  -  Impedance characteristic  -  Impedance characteristics   -  Low frequency  -  Mechanical quality factors  -  Numerical simulation  -  Open circuits  -  Power points  -  Research and development  -  Short circuit  -  Static capacitance  -  Ultrasonic atomization  -  Ultrasonic generator   -  Ultrasonic nozzle

Classification code:  802.3 Chemical Operations  -  901.3 Engineering Research  -  912.1 Industrial Engineering  -  931.2 Physical Properties of Gases, Liquids and Solids  -  921 Mathematics  -  921.6 Numerical Methods  -  931.1 Mechanics  -  921.3 Mathematical Transformations  -  802.1 Chemical Plants and Equipment  -  753.1 Ultrasonic Waves  -  421 Strength of Building Materials; Mechanical Properties  -  631.1 Fluid Flow, General  -  631.1.1 Liquid Dynamics  -  701 Electricity and Magnetism  -  723.5 Computer Applications  -  751.1 Acoustic Waves

Database:  Compendex

  23.   Accession number:  20092712172577

Title:  Computation and experiment for axial force balance of canned motor pump PBN65-40-250

Authors:  Kong, Fanyu1 ; Gao, Cuilan1 ; Zhang, Xufeng1 ; Zhang, Hongli1 ; Liu, Houlin1 

Author affiliation:  1  Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China

Corresponding author:  Gao, C. (cuilan0206@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  68-72

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Whether the axial force is balanced commendably influences whether the canned motor pump can function safely and reliably. The balanced axial force design technology of canned motor pump becomes the constraint of its large scale development. The axial force of canned motor pump rotor was multi-analyzed and calculated. By integrating the reasons for producing the axial forces of canned motor pump, the method which adjusts the size of packing ring behind the impeller and the overflow area of the balancing hole was used to achieve the balanced design of the axial force effectively. In order to measure the axial force of canned motor pump, the measuring installation and the testing system were designed. After the balance computation and the experimental confirmation, the theoretical calculation and the measured value are almost consistent. By synthesizing the axial force calculation, the design calculation method of balancing axial force has very good practical value.

Number of references:  15

Main heading:  Axial flow

Controlled terms:  Experiments  -  Force measurement  -  Motors  -  Pumps

Uncontrolled terms:  Almost consistent  -  Axial force measurement  -  Axial forces  -  Balance computation  -  Balanced design  -  Canned motor pumps  -  Design calculations  -  Experimental confirmation  -  Large-scale development  -  Packing rings   -  Testing systems  -  Theoretical calculations

Classification code:  943.2 Mechanical Variables Measurements  -  901.3 Engineering Research  -  705.3 Electric Motors  -  632.4 Pneumatic Equipment and Machinery  -  632.2 Hydraulic Equipment and Machinery  -  631.1 Fluid Flow, General  -  618.2 Pumps

Database:  Compendex

  24.   Accession number:  20092712172608

Title:  Effects of ultra high pressure treatment on main flavour compounds in orange juice

Authors:  Pan, Jian1 ; Wang, Haixiang1 ; Xie, Huiming1 ; Yang, Yi1 ; Zeng, Qingmei1 

Author affiliation:  1  Engineering Research Center of Bio-Process, Hefei University of Technology, Hefei 230009, China

Corresponding author:  Wang, H. (wangsky111@sohu.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  239-243

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Effects of ultra high pressure processing on flavour compounds in orange juice were investigated. Samples were subjected to high pressure ranging from 100 to 500 MPa. After high pressure treatments, the flavour compounds were extracted by Solid-Phase Microextraction (SPME). Analysis was carried out by Gas Chromatography-Mass Spectrometry (GC-MS). The key flavour compounds of orange juice were three alkenes (namely limonene, myrcene and α-pinene), two alcohols (linalool and α-terpineol), three aldehydes (citral, octanal and decanal), one ketone (carvone) and two esters (ethyl butyrate and 3-OH-ethyl hexanoate). After ultra high pressure treatment, limonene concentration was decreased greatly while myrcene and α-pinene concentrations were not changed significantly and the concentration of limonene was decreased by 75% after high pressure treatment of 500 MPa for 15 min, α-terpineol and carvone concentrations were increased significantly. The aldehydes concentrations were retained well. The ester concentrations were changed under high pressure treatment, but generally their concentrations were not changed remarkably. Under ultra high pressure, limonene was converted to α-terpineol and carvone respectively via acid catalysis and oxidation reaction. Orange juice was processed under pressure above 300 MPa generally. The more losses of flavour compounds were occurred in orange juice under 500 MPa in the study. Thus, pressure of about 400 MPa was chosen as the optimum condition.

Number of references:  23

Main heading:  High pressure liquid chromatography

Controlled terms:  Aldehydes  -  Chromatographic analysis  -  Concentration (process)  -  Esterification  -  Esters  -  Extraction  -  Food processing  -  Fruit juices  -  Gas chromatography  -  High pressure effects   -  Ketones  -  Mass spectrometry  -  Olefins

Uncontrolled terms:  Acid catalysis  -  Carvone  -  Concentration of  -  Ethyl butyrate  -  Ethyl hexanoate  -  Gas chromatography-mass spectrometry  -  High pressure  -  High pressure treatments  -  Juices  -  Myrcene   -  Optimum conditions  -  Orange  -  Orange juice  -  Oxidation reactions  -  Solid-phase microextraction  -  Ultra-high pressure treatment  -  Ultrahigh pressure

Classification code:  931.2 Physical Properties of Gases, Liquids and Solids  -  822.3 Food Products  -  822.2 Food Processing Operations  -  943.3 Special Purpose Instruments  -  804.1 Organic Compounds  -  802.2 Chemical Reactions  -  801 Chemistry  -  802.3 Chemical Operations

Database:  Compendex

  25.   Accession number:  20092712172575

Title:  Response of spatial variability of soil physical properties to soil erosion in purple soil slope farmland

Authors:  Su, Zheng'an1, 2, 3 ; Zhang, Jianhui1, 3 ; Nie, Xiaojun1, 2, 3 

Author affiliation:  1  Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Conservancy, Chengdu 610041, China

2  The Graduate School, Chinese Academy of Sciences, Beijing 100049, China

3  Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Chengdu 610041, China

Corresponding author:  Zhang, J. (zjh@imde.ac.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  54-60

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to study the effects of soil erosion on spatial variability of soil physical properties in farmlands with different lengths and slopes, the response of spatial variability of soil physical properties to soil erosion was explored in the Sichuan Basin of China, with topography measurement, 137Cs tracer method and analysis of soil physical properties. The results showed that tillage erosion, which was the dominant erosion process on the short slopes with the gradients of 16.6%~25.1%, played an important role in redistributing soil and resulted in no significant variation in soil physical properties (i.e., soil texture and bulk density) of tillage layer along the slope (CV<6.3%). Meanwhile, the soil physical properties of tillage layer had insignificant correlation with 137Cs contents due to tillage erosion. On the steep slope (35.6%), water erosion was the predominant erosion process due to reforestation, with evidence of 137Cs contents correlated closely with soil physical properties of tillage layer. Furthermore, on the long slope (10.1%), water erosion with separation and transport capacity was the predominant erosion process, which resulted in significant variation in soil physical properties with 137Cs contents, but there was no significant correlation between bulk density and 137Cs contents. Soil depth was affected both by tillage erosion and water erosion in slope farmlands in the Sichuan Basin of China. The erosion resulted in the fact that the thinnest soil layer was present at the summit and upper slope positions, and there was the thickest soil layer at the foot of the slope. In general, soil depth increased towards the downslope direction. Therefore, due to the differences in the predominant soil erosion process the soil physical properties varied with slope lengths in the Sichuan Basin.

Number of references:  26

Main heading:  Erosion

Controlled terms:  Agricultural machinery  -  Cesium  -  Farms  -  Physical properties  -  Reforestation  -  Revegetation  -  Soils

Uncontrolled terms:  Bulk density  -  Downslope  -  Erosion process  -  Sichuan Basin  -  Slope length  -  Slope positions  -  Soil depth  -  Soil erosion  -  Soil layer  -  Soil physical property   -  Soil slopes  -  Soil textures  -  Spatial variability  -  Steep slope  -  Tillage erosion  -  Topography measurement  -  Tracer methods  -  Transport capacity  -  Water erosion

Classification code:  821.1 Agricultural Machinery and Equipment  -  821.0 Woodlands and Forestry  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  549.1 Alkali Metals  -  931.2 Physical Properties of Gases, Liquids and Solids  -  539.1 Metals Corrosion  -  483 Soil Mechanics and Foundations  -  442.2 Land Reclamation  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  483.1 Soils and Soil Mechanics

Database:  Compendex

  26.   Accession number:  20092712172619

Title:  Effects of high-temperature heat treatment of oat kernel on viscosity properties of oat flour

Authors:  Wei, Yimin1 ; Ren, Jiajia1 ; Zhang, Bo1 ; Chen, Fengliang1 ; Hu, Xinzhong2 

Author affiliation:  1  Key Laboratory of Agricultural Product Processing and Quality Control, Institute of Agro-Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China

2  College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China

Corresponding author:  Wei, Y. (weiyimin36@hotmail.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Publication year:  2009

Pages:  299-302

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to provide experimental data on viscosity properties of oats after high-temperature treatment, the oat (Avena Nuda.) seed was milled into four components such as bran, shorts, break flour and middling flour after air-heating at 140, 155 and 170°C for 30 min and far-infrared heating at 200, 220 and 240°C for 15 min respectively. The viscosity properties of break flour, middling flour, and oat flour (mixture of break flour and middling flour with nature milling ratio) were investigated. The results showed that after high-temperature treatment, the average gelatinization temperature of break flour, middling flour and oat flour decreased significantly, which were lower than that of oat without high-temperature treatment. Their peak viscosity, final viscosity and hold viscosity increased both under air-heating (140°C, 155°C) and far-infrared heating (200°C), compared with non-treated samples. With the temperature of high-temperature effects treatment increasing gradually, their viscosity properties decreased. Proper treatment temperature, such as 140~155°C air heating or 200°C far-infrared heating can decrease the gelatinization temperature and increase the viscosity of oat flour.

Number of references:  20

Main heading:  Viscosity

Controlled terms:  Gelation  -  Heat treatment  -  Heating  -  Infrared heating  -  Milling (machining)  -  Temperature  -  Thermal effects

Uncontrolled terms:  Air heating  -  Experimental data  -  Flour  -  Gelatinization temperature  -  High temperature  -  High-temperature treatment  -  Milling  -  Oat(Avena Sativa L)  -  Peak viscosities  -  Treatment temperature   -  Viscosity properties

Classification code:  951 Materials Science  -  931.2 Physical Properties of Gases, Liquids and Solids  -  802.3 Chemical Operations  -  741.3 Optical Devices and Systems  -  643.1 Space Heating  -  642.1 Process Heating  -  641.1 Thermodynamics  -  641 Heat and Mass Transfer; Thermodynamics  -  631.1 Fluid Flow, General  -  604.2 Machining Operations  -  537.1 Heat Treatment Processes  -  531 Metallurgy and Metallography  -  421 Strength of Building Materials; Mechanical Properties

Database:  Compendex

  27.   Accession number:  20092712172597

Title:  Effect of equivalence ratio on the air-gasification of swine manure

Authors:  Tu, Deyu1 ; Dong, Hongmin2 ; Ding, Weimin3 

Author affiliation:  1  School of Mechanical Engineering, Anhui University of Technology, Maanshan 243002, China

2  Institute of Agro-Environmental and Sustainable Development, Chinese Academy of Agricultural Science, Beijing 100081, China

3  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China

Corresponding author:  Dong, H. (donghm@cjac.org.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  167-171

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  The main method of controlling pollution caused by livestock raising is waste reduction and utilization, and the thermochemical conversion technology provides a new mode for ernergy production from livestock wastes. The fluidized bed gasifier system was developped and the swine manure air-gasification experiments were carried out. This article mainly presented the effects of Equivalence Ratio(ER) on gasification process. The results showed that ER had two-sided and complicated effects on the gasification process. The alteration of ER would change the velocity of fluidizing gases in the reactor which had the remarkable influence on fluidized bed temperature distribution. The results showed that oxidation and reduction zone, as well as high temperature region, moved up in the reactor along with the increase of ER. The solid production was decreased with the increase of ER which was favorable for gasification process, but too high value of ER would increase the yield of liquid which was harmful for gasification process. The heat value of fuel gas was decreased with the increase of ER and the carbon conversion efficiency had the countertrend. The gasification efficiency had the fluctuation characteristic with the alteration of ER. The results showed that the ER setting range was around 0.25 for swine manure gasification. In practical production, it would be very important to adjust the ER according to the conditions of inner reactor's temperature distribution, material fluidization quality and fuel gas composition.

Number of references:  16

Main heading:  Gasification

Controlled terms:  Agriculture  -  Conversion efficiency  -  Fertilizers  -  Fluid dynamics  -  Fluidization  -  Fluidized beds  -  Gas generators  -  Manures  -  Radioactive waste disposal  -  Temperature distribution   -  Thermoanalysis  -  Thermolysis  -  Waste utilization

Uncontrolled terms:  Equivalence ratio  -  Equivalence ratios  -  Fluidization quality  -  Fluidized bed gasifier  -  Fluidized bed temperature  -  Fuel gas  -  Fuel gas composition  -  Gasification efficiency  -  Gasification process  -  Heat value   -  High temperature  -  Livestock manures  -  Livestock wastes  -  Oxidation and reduction  -  Practical production  -  Swine manure  -  Thermochemical Conversion  -  Waste reduction

Classification code:  801.4 Physical Chemistry  -  802.1 Chemical Plants and Equipment  -  802.2 Chemical Reactions  -  802.3 Chemical Operations  -  804 Chemical Products Generally  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.2 Agricultural Chemicals  -  821.5 Agricultural Wastes  -  931.1 Mechanics  -  801 Chemistry  -  452.3 Industrial Wastes  -  452.4 Industrial Wastes Treatment and Disposal  -  521.2 Combustors  -  522 Gas Fuels  -  525.5 Energy Conversion Issues  -  622.5 Radioactive Wastes  -  631.1 Fluid Flow, General  -  641.1 Thermodynamics  -  642.2 Industrial Furnaces and Components

Database:  Compendex

  28.   Accession number:  20092712172612

Title:  Changes in the volatile compounds and physicochemical properties of Wujiuxiang pear fruits during storage

Authors:  Chen, Jiluan1 ; Feng, Zuoshan2 ; Wu, Jihong3 ; Wang, Zhengfu3 ; Hu, Xiaosong3 

Author affiliation:  1  Food College, Shihezi University, Shihezi 832003, China

2  College of Food Science, Xinjiang Agricultural University, Shihezi 830052, China

3  College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China

Corresponding author:  Hu, X. (huxiaos@hotmail.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  264-269

Language:  English

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  The levels of sugars and organic acids in Wujiuxiang pear (Pyrus communis L. cv. Wujiuxiang) fruit were investigated using high-performance liquid chromatography (HPLC). Volatile compounds from stored Wujiuxiang pear were isolated by solid-phase microextraction (SPME) and analyzed by high-resolution gas chromatography and gas chromatography/mass spectrometry (GC/MS). Fructose was the dominant sugar, followed by glucose and sucrose. With the increase of storage time, fructose levels increased, and at the stage three, the fructose content was the highest. Sucrose and glucose levels decreased unremarkably. The main organic acid was citric acid, followed by malic acid. Citric acid and tartaric acid levels increased during storage. Malic acid and quinic acid increased from stage one to stage two. Shikimic acid level increased from stage one to stage three, then decreased slightly. Acetic acid changed unremarkably. Succinic acid changed not significantly from stage one to stage two, then increased and it was the highest in the stage three. The level in stage four and stage five was lower than the level in stage three. Flesh firmness decreased slightly during storage. Soluble solids content (SSC) increased after three months of storage, then slightly decreased. The dominant aroma components were hexyl acetate (49.35%), butyl acetate (19.56%), ethyl hexanoate (5.16%), ethyl butyrate (4.92%), ethyl acetate (1.08%), and ethyl (E,Z)-2,4-decadienoate (0.84%). Some of the aroma volatile components increased during storage, especially the ester compounds. The results indicated that the quality of Wujiuxiang pear was affected by the changes of volatile compounds and physicochemical properties.

Number of references:  22

Main heading:  Fruits

Controlled terms:  Carboxylic acids  -  Chromatographic analysis  -  Citric acid  -  Esters  -  Extraction  -  Fructose  -  Gas chromatography  -  Glucose  -  High performance liquid chromatography  -  High pressure liquid chromatography   -  Organic acids  -  Sugar (sucrose)  -  Volatile organic compounds

Uncontrolled terms:  Aroma components  -  Butyl acetate  -  Ethyl acetates  -  Ethyl butyrate  -  Ethyl hexanoate  -  Gas chromatography/mass spectrometry  -  Glucose level  -  Hexyl acetate  -  High-resolution gas chromatographies  -  Malic acids   -  Pear fruit  -  Physical/chemical properties  -  Physicochemical property  -  Pyrus communis  -  Quinic acids  -  Shikimic acids  -  Solid-phase microextraction  -  Soluble solids content  -  Storage  -  Storage time   -  Succinic acids  -  Tartaric acids  -  Volatile components  -  Volatile compounds  -  Wujiuxiang pear

Classification code:  822.3 Food Products  -  822 Food Technology  -  821.4 Agricultural Products  -  804.1 Organic Compounds  -  802.3 Chemical Operations  -  801 Chemistry  -  451.1 Air Pollution Sources

DOI:  10.3969/j.issn.1002-6819.2009.05.049

Database:  Compendex

  29.   Accession number:  20092712172566

Title:  Numerical analysis of influence of emitter channel structure on suspended granule distribution

Authors:  Wang, Wen'e1 ; Wang, Fujun2 ; Niu, Wenquan1 ; Hu, Xiaotao1 

Author affiliation:  1  College of Water Resource and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling 712100, China

2  College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China

Corresponding author:  Wang, F. (wangfj@cau.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  1-6

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  The size of labyrinth emitter is minimal and the internal structure is relatively complex. It is necessary to analyze the influence of emitter channel structure on the suspended granule distribution for emitter channel structural optimization. The orthogonal design was used for emitter channel design. Based on two-phase flow theory, numerical analysis of liquid solid two-phase flow of design emitter was carried out using computational fluid dynamics software. The velocity and suspended granule distribution in the emitter channel at different inlet concentrations and granule sizes were obtained by simulation. The effects of structure parameters, granule sizes and inlet concentrations on suspended granule distribution were analyzed. The results showed that the emitter channel structure had influence on granule concentration distribution. The order of influence degree was tooth angle, intertooth space, channel depth, and tooth depth. The chance of emitter being plugged by granule particles was small if the granule size was 1/10th~1/6th of the least size of the channel width, and it was advantaged to improve the anti-clogging ability of emitters if the ratio of tooth depth and intertooth space was less than 0.5. The study can provide reference for emitter structure optimization.

Number of references:  17

Main heading:  Structural optimization

Controlled terms:  Computational fluid dynamics  -  Dentistry  -  Fluid dynamics  -  Granulation  -  Liquids  -  Particles (particulate matter)  -  Structural design  -  Two phase flow

Uncontrolled terms:  Channel depth  -  Channel design  -  Channel structures  -  Channel widths  -  Computational Fluid Dynamics software  -  Emitter channel structure  -  Emitter structures  -  Granule concentration  -  Granule size  -  Influence degree   -  Inlet concentration  -  Internal structure  -  Liquid-solid two-phase flow  -  Orthogonal design  -  Structure parameter

Classification code:  723.5 Computer Applications  -  802.3 Chemical Operations  -  804 Chemical Products Generally  -  951 Materials Science  -  921.5 Optimization Techniques  -  931.1 Mechanics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  921.6 Numerical Methods  -  631.1.2 Gas Dynamics  -  631.1.1 Liquid Dynamics  -  408.1 Structural Design, General  -  451.1 Air Pollution Sources  -  461.1 Biomedical Engineering  -  461.6 Medicine and Pharmacology  -  462.3 Dental Equipment and Supplies  -  631.1 Fluid Flow, General

Database:  Compendex

  30.   Accession number:  20092712172568

Title:  Soil infiltration properties with slight saline water intermittent application

Authors:  Xue, Jing1 ; Wang, Quanjiu1, 2 ; Bi, Yuanjie1 

Author affiliation:  1  Institute of Water Resources, Xi'an University Technology, Xi'an 710048, China

2  State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Yangling 712100, China

Corresponding author:  Wang, Q. (wquanjiu@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  14-19

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Reasonable development and utilization of slight saline water is an important approach of relieving the agricultural freshwater resource shortage. Soil infiltration properties were studied through laboratory simulation experiments of one-dimensional vertical intermittent infiltration under different periods and circulating rates, when salt concentrations of the slight saline water were 2, 3, 4, 5 and 6 g/L. Philip's infiltration formula was used to analyze the relationship between the sorptivity and the salt concnentration of slight saline water. The results showed that the intermittent infiltration properties of slight saline water were the same as the properties of freshwater, but the slight saline water intermittent infiltration could increase the wetted depth. The cumulative infiltration and wetted depth changed with the different salt concentrations of slight saline water. The sorptivity increased with the increasing salinity of the slight saline water, and the sorptivity was the maximum at the first period of intermittent infiltration and decrease at the following periods, but the decreasing range was not significant and tended to a stable value.

Number of references:  19

Main heading:  Saline water

Controlled terms:  Hydraulic models  -  Irrigation  -  Seepage  -  Soil mechanics  -  Soils  -  Water analysis  -  Water resources  -  Wetting

Uncontrolled terms:  Circulating rates  -  Cumulative infiltration  -  Fresh water resources  -  Intermittent infiltration  -  Laboratory simulation  -  Salt concentration  -  Slight saline water  -  Soil infiltration  -  Sorptivity

Classification code:  821.3 Agricultural Methods  -  802.3 Chemical Operations  -  801 Chemistry  -  632.1 Hydraulics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  483.1 Soils and Soil Mechanics  -  444 Water Resources  -  441 Dams and Reservoirs; Hydro Development  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  445.2 Water Analysis

Database:  Compendex

  31.   Accession number:  20092712172583

Title:  Calibration of EGR system of ethanol/diesel blend fuel engine

Authors:  Peng, Meichun1 ; Huang, Hua2 ; Hu, Qiang3 ; Wang, Xianfeng1 

Author affiliation:  1  Electro-Mechanical Engineering Faculty, Guangdong University of Technology, Guangzhou 510090, China

2  Guangzhou Polytechnic of Science and Trade, Guangzhou 511442, China

3  Guangzhou Bureau for Monitoring and Testing Special Equipment, Guangzhou 510180, China

Corresponding author:  Peng, M. (zzspmc@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  100-104

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  The calibration of EGR system of ethanol/diesel blend fuel engine DL190-12 was carried out. The control of flow of exhaust gas recirculation was completed with adjusting opening width of EGR valve which was controlled by vacuum. The method of line condition's calibration for vacuum in EGR valve was proposed. Value engineering principle was applied in the optimization of engine performance test results for calibration of vacuum in EGR valve. The model of engine performance evaluation was established, the evaluation indexes were proposed, and their weights were given. The best vacuum MAP of EGR valve by two-grade evaluation methods was obtained, the results was reasonable and could be used in EGR control.

Number of references:  15

Main heading:  Engine cylinders

Controlled terms:  Calibration  -  Cylinders (shapes)  -  Engines  -  Machine design  -  Vacuum  -  Vacuum technology  -  Value engineering

Uncontrolled terms:  Blend fuels  -  EGR  -  EGR valve vacuum  -  Engine performance  -  Engine performance tests  -  Engineering principles  -  Ethanol/diesel  -  Evaluation index  -  Evaluation Method  -  Exhaust gas recirculation   -  Method of lines  -  Opening width

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  -  911.5 Value Engineering  -  902.2 Codes and Standards  -  654.2 Rocket Engines  -  633 Vacuum Technology  -  617.3 Steam Engines  -  612.1.1 Internal Combustion Engine Components  -  612 Engines  -  601 Mechanical Design  -  408.2 Structural Members and Shapes

Database:  Compendex

  32.   Accession number:  20092712172598

Title:  Economy and emission characteristics of different proportions of biodiesel from diesel engine

Authors:  Li, Xiaoyu1 ; Han, Heyou2 ; Wang, Wei1 ; Chen, Hao1 ; Zhang, Jun1 

Author affiliation:  1  College of Engineering and Technology, Huazhong Agricultural University, Wuhan 430070, China

2  College of Science, Huazhong Agricultural University, Wuhan 430070, China

Corresponding author:  Li, X. (lixioayu@mail.hzau.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  177-182

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Experimental study on the economy and emission characteristics has important value for serviceability of biodiesel. Based on engine bench test, the brake special fuel consumption and exhaust emissions of the engine when fueled with the four mixing ratios of biodiesel were measured. The results indicate that the biodiesel and blend fuels can be used as alternative fuel in the diesel engine without any modification. As the mixed proportion of biodiesel gets larger, the smoke intensity, HC and CO emission concentrations decrease obviously, which improves the emission characteristics of engine. When 10% or 20% proportion of biodiesel was added for diesel engine, it can reduce the emissions of smokes, HC and CO within economic consumption.

Number of references:  16

Main heading:  Diesel engines

Controlled terms:  Alternative fuels  -  Biodiesel  -  Brakes  -  Carbon monoxide  -  Engines  -  Leakage (fluid)  -  Smoke  -  Steel metallurgy

Uncontrolled terms:  Blend fuels  -  CO emissions  -  Economic consumption  -  Emission  -  Emission characteristics  -  Engine bench tests  -  Exhaust emission  -  Experimental studies  -  Important value  -  Mixing ratios   -  Smoke intensity

Classification code:  612.2 Diesel Engines  -  617.3 Steam Engines  -  619.1 Pipe, Piping and Pipelines  -  612 Engines  -  654.2 Rocket Engines  -  804 Chemical Products Generally  -  804.2 Inorganic Compounds  -  801.3 Colloid Chemistry  -  602 Mechanical Drives and Transmissions  -  452.1 Sewage  -  452.3 Industrial Wastes  -  483.1 Soils and Soil Mechanics  -  451.1 Air Pollution Sources  -  523 Liquid Fuels  -  531.1 Metallurgy  -  545.3 Steel  -  524 Solid Fuels

Database:  Compendex

  33.   Accession number:  20092712172592

Title:  Extraction of the image of soybean target leaf spot based on improved genetic algorithm

Authors:  Qi, Guangyun1 ; Ma, Xiaodan1 ; Guan, Hai'ou1 

Author affiliation:  1  Information Technology College, Heilongjiang August First Land Reclamation University, Daqing 163319, China

Corresponding author:  Qi, G. (bynd_qgy@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  142-145

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Aiming at extracting the image of diseased spots and calculating the feature parameters of diseased spots, the present paper studied the extracting method of soybean diseased spots, which used computer digital image processing and genetic algorithm. First, the authors obtained the image, and then recognized the diseased spots through genetic algorithm. At last, the feature parameters of diseased spots were calculated by using the technology of digital image processing. The results indicate that this method can extract the image of diseased spots efficaciously and calculate the feature parameter accurately, which can provide the foundation for recognition of disease category in advance.

Number of references:  16

Main heading:  Image processing

Controlled terms:  Digital image storage  -  Feature extraction  -  Genetic algorithms  -  Imaging systems

Uncontrolled terms:  Calculating feature parameter  -  Digital image processing  -  Diseased spots  -  Feature parameters  -  Improved genetic algorithms  -  Leaf spots  -  Soybean

Classification code:  751.1 Acoustic Waves  -  746 Imaging Techniques  -  741.3 Optical Devices and Systems  -  741.1 Light/Optics  -  741 Light, Optics and Optical Devices  -  921 Mathematics  -  723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  722.4 Digital Computers and Systems  -  722.1 Data Storage, Equipment and Techniques  -  716 Telecommunication; Radar, Radio and Television  -  723.2 Data Processing and Image Processing

Database:  Compendex

  34.   Accession number:  20092712172603

Title:  Analysis of ecosystem servive function of land use in rural residential land of Pinggu district, Beijing

Authors:  Jiang, Guanghui1, 2 ; Zhang, Fengrong3 ; Tan, Xuejing1, 2 ; Huo, Huige1, 2 ; Zhao, Tingting3 

Author affiliation:  1  College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China

2  State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing 100875, China

3  Department of Land Resources Management, China Agricultural University, Beijing 100193, China

Corresponding author:  Zhang, F. (zhangfr@cau.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  210-216

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Based on the land use actuality map over the same period and the cadastral survey map of Beijing collective land from different land classifications, farmland use types and structure inside the rural residential land were analyzed with the current land use classification of Pinggu district, Beijing. And then the ecosystem-service value of rural residential land of Pinggu district was calculated. The results showed that the rural residential land was a mixed land use type which had ecological service function. The ecological service function played an important role in the maintenance of the ecological environment inside the rural residential land. Ecological service function components of rural residential land were changed regularly in different zones. The results can benefit the pilot work that "balance the construction land quantity between the decrease of the rural residential land and the urban construction land" as well as the establishment of accounting system of environmental economy. The results have important reference meaning to rural sustainable development.

Number of references:  18

Main heading:  Ecosystems

Controlled terms:  Economics  -  Forestry  -  Land use  -  Regional planning  -  Rural areas  -  Strategic planning  -  Surveys  -  Zoning

Uncontrolled terms:  Accounting system  -  Construction land  -  Ecological environments  -  Ecological services  -  Ecosystem service  -  Land use classification  -  Land use type  -  Landuse classifications  -  Pinggu district of Beijing  -  Residential land   -  Survey map  -  Urban construction

Classification code:  971 Social Sciences  -  912.2 Management  -  911.2 Industrial Economics  -  903.1 Information Sources and Analysis  -  901.4 Impact of Technology on Society  -  821.0 Woodlands and Forestry  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  454.3 Ecology and Ecosystems  -  442.2 Land Reclamation  -  405.3 Surveying  -  403.2 Regional Planning and Development  -  403.1 Urban Planning and Development  -  403 Urban and Regional Planning and Development

Database:  Compendex

  35.   Accession number:  20092712172588

Title:  Effect of technical parameters of countercurrent moisture conditioning machine on humidification uniformity of brown rice

Authors:  Zuo, Yanjun1 ; Jia, Fuguo1 ; Xia, Jiqing1 

Author affiliation:  1  College of Engineering, Northeast Agricultural University, Harbin 150030, China

Corresponding author:  Jia, F. (jfg204@163.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  123-126

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to achieve the uniform humidification of brown rice by countercurrent moisture conditioning machine, the effects of different technical parameters (height of nozzle, angle of disc, rotational speed of grain cleaning finger, et al) of key parts of moisture conditioning machine for brown rice (moisture of 12.0%) on humidification uniformity were studied by quadratic regression rotary combination experiments. Software SAS was used to analyze the effect of height of nozzle, angle of disc and rotational speed of grain cleaning finger on humidification uniformity. The standard deviation of moisture reached the smallest, which was 0.04, in the storehouse of the moisture conditioning machine for brown rice, when the height of nozzle was 242.05 mm, the angle of disc was -8.41° and the rotational speed of grain cleaning finger was 77.1 r/min. The results provide for the promotion and application of the moisture conditioning technology.

Number of references:  15

Main heading:  Grain (agricultural product)

Controlled terms:  Moisture  -  Nozzles

Uncontrolled terms:  Brown rice  -  Counter current  -  Humidification uniformity  -  Key parts  -  Moisture conditioning  -  Moisture conditioning machine  -  Quadratic regression  -  Rotational speed  -  Standard deviation  -  Technical parameters

Classification code:  443.1 Atmospheric Properties  -  631.1 Fluid Flow, General  -  801.4 Physical Chemistry  -  821.4 Agricultural Products

Database:  Compendex

  36.   Accession number:  20092712172593

Title:  Application of GIS and particle swarm optimization in rural substation locating

Authors:  Yu, Jia1, 2 ; Piao, Zailin1 ; Sun, Rongguo3 ; Li, Qian3 

Author affiliation:  1  College of Information and Electric Engineering, Shenyang Agricultural University, Shenyang 110161, China

2  Department of Electric Engineering, Shenyang Institute of Engineering, Shenyang 110136, China

3  Shenyang Aeronautical Technology Limited Company, Shenyang 110131, China

Corresponding author:  Piao, Z. (piaozl@china.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  146-149

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Considering the defects of Particle Swarm Optimization (PSO) in the optimization of rural substation location, which constringency speed of getting the global optimum is slow and that is easy to fall into local optimum, this study took development zone of one county as an example to optimize the substation location. The inertia weight dynamic adjustment strategy was utilized to balance effectually the global and local search ability, which greatly improved the capability of PSO algorithm. By considering the influence of Geographic Information System (GIS) on the substation site, the improved PSO was combined with graph problem. Results show that the iteration times of PSO is 48 and the iteration times of the improved PSO reduces to 26. The speed of getting global optimum has doubled. The visualization of the planning process was realized by GIS.

Number of references:  12

Main heading:  Particle swarm optimization (PSO)

Controlled terms:  Geographic information systems  -  Information systems  -  Location  -  Three term control systems

Uncontrolled terms:  Geography information system  -  Global optimum  -  Graph problems  -  Improved PSO  -  Inertia weight  -  Iteration time  -  Local optima  -  Local search  -  Planning process  -  PSO algorithms   -  Substation locating

Classification code:  912 Industrial Engineering and Management  -  911 Cost and Value Engineering; Industrial Economics  -  903.3 Information Retrieval and Use  -  921.5 Optimization Techniques  -  903.2 Information Dissemination  -  723.3 Database Systems  -  723 Computer Software, Data Handling and Applications  -  731.1 Control Systems

Database:  Compendex

  37.   Accession number:  20092712172590

Title:  Design of control system based on μC/OSII for seed processing machinery

Authors:  Zhang, Quan1 ; Chen, Dayue1 ; Zhao, Chunyu1 

Author affiliation:  1  School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China

Corresponding author:  Zhang, Q. (aerooz@gmail.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  132-136

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to improve the automation and intelligence standard of the seed processing equipment, a set of control system based on Micro Controller Unit(MCU) was proposed. The system is modular designed, and can be divided into the main control circuit based on C8051F020 as the core and the external control circuits. With these modules, certain control system can be built up easily by selecting modules with corresponding function. Furthermore, the real-time operating system μC/OSII was transplanted into the main control board. With its help, the coding of the controlling program has been simplified as the planning for all the tasks, which would be also helpful for improving the reliability and shortening the development time. The whole system has successfully been applied into the control of the seed drying machine. The result indicated that the system can easily fulfill the aim to create a common controlling system with a low cost.

Number of references:  11

Main heading:  Machine design

Controlled terms:  Computer operating systems  -  Control  -  Control system analysis  -  Machinery  -  Seed

Uncontrolled terms:  Control circuits  -  Controlling system  -  Design of control system  -  Development time  -  Drying machines  -  External control  -  Low costs  -  Main control board  -  MCU  -  Processing equipment   -  Processing machinery  -  Real time operating system  -  Whole systems

Classification code:  821.4 Agricultural Products  -  732 Control Devices  -  731.1 Control Systems  -  731 Automatic Control Principles and Applications  -  723 Computer Software, Data Handling and Applications  -  722 Computer Systems and Equipment  -  601 Mechanical Design

Database:  Compendex

  38.   Accession number:  20092712172570

Title:  Prediction of irrigation water use using parallel gray neural network

Authors:  Chi, Daocai1 ; Tang, Yanfang2 ; Gu, Tuo3 ; Yu, Miao1 ; Li, Zheng1 ; Ma, Zongzheng1 

Author affiliation:  1  College of Water Resource, Shenyang Agricultural University, Shenyang 110161, China

2  Water Saving Office in Water Bureau of Miyun County, Beijing 101500, China

3  Beijing Miyun Reservoir Management Department, Beijing 101512, China

Corresponding author:  Chi, D. (daocaichi@vip.sina.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  26-29

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  The paper put forward a forecast method named parallel gray neural network (PGNN), which was combined with neural network and the gray forecast method. The PGNN was adopted to forecast irrigation water use and the forecast method availability degree was used as the optimization index to calculate the weighted coefficient of the combination model. The results showed that the average error of PGNN was 2.67% and it was obviously lower than that of unitary gray and neural network forecast method. PGNN can be applied to forecast middle-long term irrigation water use.

Number of references:  15

Main heading:  Neural networks

Controlled terms:  Biochemical oxygen demand  -  Computer simulation  -  Forecasting  -  Irrigation  -  Mathematical models  -  Water supply

Uncontrolled terms:  Average errors  -  Combination models  -  Forecast method  -  Gray neural networks  -  Irrigation water use  -  Long term  -  Neural network forecast  -  Parallel gray neural networks  -  Water consumption  -  Weighted coefficient

Classification code:  922.2 Mathematical Statistics  -  921 Mathematics  -  912.2 Management  -  821.3 Agricultural Methods  -  723.5 Computer Applications  -  723.4 Artificial Intelligence  -  461.1 Biomedical Engineering  -  453 Water Pollution  -  452.4 Industrial Wastes Treatment and Disposal  -  452.2 Sewage Treatment  -  446.1 Water Supply Systems

Database:  Compendex

  39.   Accession number:  20092712172617

Title:  Experiment for drying Thomson seedless grape with a multifunctional equipment composed of series-parallel solar energy collectors for drying fruits and vegetables

Authors:  Liu, Yijian1, 2 ; Yang, Yang3 ; Wang, Hai2 ; Wang, Jie1 

Author affiliation:  1  College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China

2  Chinese Academy of Agricultural Engineering, Beijing 100125, China

3  College of Science, Hebei North University, Zhangjiakou 075000, China

Corresponding author:  Wang, H.

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  288-292

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Experiments for drying Thomson seedless grape with a multifunctional equipment which was composed of series-parallel solar energy collectors and designed by authors themselves were conducted under climate condition of the Hami city of Xinjiang area. Drying effect of the equipment was compared with that of traditional air-curing barn. The results showed that the drying period of raisins by using the equipment was decreased from 45 d to 15 d compared with that by using the traditional air-curing barn. The drying quality was also increased. The ratio of green raisins was increased from 35% to 79.19%. The results indicate that the equipment is suitable for making raisins, and the clean energy-the solar energy can be used for industrial drying of fruits and vegetables at the same time.

Number of references:  16

Main heading:  Drying

Controlled terms:  Curing  -  Dewatering  -  Equipment  -  Farm buildings  -  Fruits  -  Solar collectors  -  Solar energy  -  Solar radiation

Uncontrolled terms:  Clean energy  -  Climate condition  -  Drying effects  -  Drying quality  -  Raisin  -  Series-parallel  -  Solar energy collectors  -  Thomson  -  Xinjiang

Classification code:  821.6 Farm Buildings and Other Structures  -  821.4 Agricultural Products  -  818.3 Rubber and Elastomer Processing  -  815.1 Polymeric Materials  -  802.3 Chemical Operations  -  901 Engineering Profession  -  802.2 Chemical Reactions  -  657.1 Solar Energy and Phenomena  -  642.1 Process Heating  -  615.2 Solar Power  -  402.1 Industrial and Agricultural Buildings  -  702.3 Solar Cells

Database:  Compendex

  40.   Accession number:  20092712172572

Title:  Effects of irrigation with piggery wastewater on nitrate nitrogen dynamics in fluvio-aquatic soil

Authors:  Yang, Jun1, 2 ; Zhang, Lei3 ; Zhang, Keqiang1 ; Wang, Feng1 ; Huang, Zhiping1 ; Li, Xiaoguang1 

Author affiliation:  1  Institute of Agro-environmental Protection, Ministry of Agriculture, Tianjin 300191, China

2  College of Chemistry and Life Science, Tianjin Normal University, Tianjin 300387, China

3  Tianjin Water Industry Engineering Equipment Company, Limited, Tianjin 300070, China

Corresponding author:  Zhang, K. (kqzhang68@126.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  35-39

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Effluent of three stages in piggery wastewater disposal process (raw water, effluent of anaerobic tank, effluent of ecological pond and groundwater) which was mixed with groundwater of 1:5 scale (volume ratio) and three irrigation amounts of effluent of anaerobic tank were applied to irrigate winter wheat. Through monitoring the nitrate nitrogen content dynamics and residual, a better type of water source and suitable irrigation amount were found in order to provide theoretical bases for formulating a scientific pattern of irrigation with piggery wastewater. The results showed that soil NO3--N content of a depth of 0~100 cm soil profile decreased first, and then increased, and decreased finally with the increase of soil layer depth under three different treatments of mixed water. The concentrations of NO3--N in each soil layer after wheat harvest were higher than original NO3--N content. The content of accumulated NO3--N was significantly increased more after harvest than in jointing stage by irrigation with three different treatments of mixed water in a depth of 0~100 cm soil profile. And the variation of the content of accumulated NO3--N was the smallest in the treatment of eco-pond/groundwater (1:5), so this water was suitable for irrigation. There was a positive correlation between irrigation with different amounts of anaerobic water and the leaching of NO3--N and NO3--N residual content, and the better was 500 m3/hm2 in this situation. The irrigation in grain filling stage may greatly increase the NO3--N content in soil profile, so it is suitable for irrigation with groundwater in this period.

Number of references:  20

Main heading:  Effluents

Controlled terms:  Biochemical oxygen demand  -  Crops  -  Dynamics  -  Grain (agricultural product)  -  Groundwater  -  Harvesting  -  Hydrogeology  -  Irrigation  -  Leaching  -  Nitrates   -  Nitrogen  -  Soils  -  Tanks (containers)  -  Wastewater  -  Wastewater disposal  -  Water content

Uncontrolled terms:  Anaerobic water  -  Grain filling  -  N content  -  Nitrate nitrogen  -  Piggery wastewater  -  Positive correlations  -  Raw water  -  Residual content  -  Residual nitrate nitrogen  -  Soil layer   -  Soil profiles  -  Theoretical basis  -  Three stages  -  Volume ratio  -  Water source  -  Wheat harvest  -  Winter wheat

Classification code:  619.2 Tanks  -  802.3 Chemical Operations  -  804 Chemical Products Generally  -  533.1 Ore Treatment  -  804.2 Inorganic Compounds  -  821.4 Agricultural Products  -  931.1 Mechanics  -  821.3 Agricultural Methods  -  483.1 Soils and Soil Mechanics  -  444.2 Groundwater  -  452.2 Sewage Treatment  -  452.3 Industrial Wastes  -  444 Water Resources  -  452.4 Industrial Wastes Treatment and Disposal  -  454.2 Environmental Impact and Protection  -  481.1 Geology  -  453 Water Pollution

Database:  Compendex

  41.   Accession number:  20092712172589

Title:  Application of machine vision on automatic seedling transplanting

Authors:  Jiang, Huanyu1 ; Shi, Jinghui1 ; Ren, Ye1 ; Ying, Yibin1 

Author affiliation:  1  College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China

Corresponding author:  Jiang, H. (hyjiang@zju.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  127-131

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  This paper presents a machine vision system for automatic seedling transplanting. To reduce transplanting time, image which seedling plants grow in tray was acquired and processed in order to identify the cells to be transplanted. Overlapping of the border seedlings and extruding leaves from neighboring cells always leads to identification failures. So a digital image processing algorithm based on morphological watersheds was developed to segment the border of leaves. The area and the perimeter of seedlings were extracted, by which whether the cell was suitable for transplanting could be determined. In this research, using tomato seedlings as samples, good identification rate for suitable seedling was obtained (98%). The result shows that this method can be used in various growing conditions of seedling, and this system can be used for automatic seedling transplanting robot.

Number of references:  16

Main heading:  Plants (botany)

Controlled terms:  Computer vision  -  Digital image storage  -  Imaging systems  -  Landforms  -  Watersheds

Uncontrolled terms:  Digital image processing  -  Growing conditions  -  Identification failure  -  Identification rates  -  Machine vision  -  Machine vision systems  -  Seedling transplanting  -  Tomato seedlings  -  Transplanting time  -  Watershed algorithm

Classification code:  741.3 Optical Devices and Systems  -  741.2 Vision  -  741 Light, Optics and Optical Devices  -  731.6 Robot Applications  -  723.5 Computer Applications  -  746 Imaging Techniques  -  723.2 Data Processing and Image Processing  -  722.1 Data Storage, Equipment and Techniques  -  481.1 Geology  -  461.9 Biology  -  444.1 Surface Water  -  722.4 Digital Computers and Systems

Database:  Compendex

  42.   Accession number:  20092712172578

Title:  Design and test of 1GSZ-350 stubble-breaking and rotary tilling combined cultivating machine

Authors:  Zhang, Xinyue1 ; Li, Lianhao1 ; Wang, Chun1 ; Zhao, Dayong2 

Author affiliation:  1  College of Engineering, Heilongjiang August First Land Reclamation University, Daqing 163319, China

2  Harbin Research Institute of Agricultural Mechanization, Harbin 150070, China

Corresponding author:  Wang, C. (wangchun1963@126.com) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  73-77

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to meet the needs of agricultural implements matched with high-powered tractors, a broad width combined cultivating machine was design based on single and combined work of cultivating machines. The combined cultivating machine had the functions of stubble-breaking, rotary tillage and subsoiling. Single works and combined work were carried out. The experimental results showed that the machine could give full play to a operation efficiency of high-power tractor when working. The designed machine could reduce power consumption of tractor, and energy saving was about 14.3%. The arrangement of stubble-breaking blade, deep-shovel and rotary tilling blade was reasonable, and soil moisture conservation efficiency was obvious. The ratios of pulverizing soil and stubble-breaking were above 95%. The designed machine belongs to energy saving of high efficiency machinery, and provides reference for studying on large agricultural implements.

Number of references:  16

Main heading:  Machine design

Controlled terms:  Agricultural implements  -  Agriculture  -  Groundwater  -  Machinery  -  Moisture control  -  Soil conservation  -  Soil moisture  -  Tools  -  Tractors (agricultural)  -  Tractors (truck)   -  Water conservation

Uncontrolled terms:  Combined tilling machine  -  Energy saving  -  High efficiency  -  High-power  -  Moisture conservation  -  Operation efficiencies  -  Power Consumption  -  Rotary tillage  -  Stubble-breaking

Classification code:  944.2 Moisture Measurements  -  821.3 Agricultural Methods  -  821.1 Agricultural Machinery and Equipment  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  731.3 Specific Variables Control  -  663.1 Heavy Duty Motor Vehicles  -  605 Small Tools and Hardware  -  603 Machine Tools  -  601 Mechanical Design  -  483.1 Soils and Soil Mechanics  -  444.2 Groundwater  -  444 Water Resources  -  403.1 Urban Planning and Development

Database:  Compendex

  43.   Accession number:  20092712172600

Title:  Simulation of cucumber fruit growth in greenhouse based on production of thermal effectiveness and photosynthesis active radiation

Authors:  Ni, Jiheng1 ; Chen, Xuehao1 ; Chen, Chunhong2 ; Xu, Qiang1 ; Zhao, Daqiu1 

Author affiliation:  1  College of Horticulture and Plant Protected, Yangzhou University, Yangzhou 225009, China

2  Key Laboratory of Protected Horticultural Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China

Corresponding author:  Chen, X. (xhchen@yzu.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  192-196

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  In order to improve the ability of predicting the yields of greenhouse cucumber, a model for fruit growth nf greenhouse cucumber was developed based on the effects of temperature and radiation on fruit growth using production of thermal and PAR (TEP) as prediction index. Experiment with other planting data was carried out in greenhouse to collect and validate the model. The results showed that the simulated values agreed well with the measured ones. The determined coefficient (R2) and root mean squared error (RMSE) between the simulated and measured values of fruit length on different leaf axils was 0.7325 and 1.64 cm, respectively. The determined coefficient (r2) and root mean squared error (RMSE) between the simulated and measured values fruit diameter on different leaf axils was 0.5885 and 0.40 cm, respectively. The determined coefficient (R2) and root mean squared error (RMSE) between the simulated and measured values of fruit fresh weight on different leaf axils was 25.04 g and 0.6782 respectively. And the determined coefficient (R2) and root mean squared error (RMSE) between the model based on growing degree days (GDD) simulated and measured values of fruit fresh weight on different leaf axils was 0.6068 and 28.52 g. The prediction accuracy of TEP based model is 12.21% higher than that of GDD. Based on the results it can be concluded that the model can give a satisfactory prediction of fruit fresh weight on different axils. The model developed in this study is applicable and can provide theoretical basis and decision support for the production of greenhouse cucumber.

Number of references:  24

Main heading:  Simulators

Controlled terms:  Agriculture  -  Atmospheric temperature  -  Decision support systems  -  Fruits  -  Greenhouses  -  Mean square error  -  Photosynthesis  -  Radiation effects  -  Three term control systems

Uncontrolled terms:  Active radiation  -  Cucumber  -  Decision supports  -  Effects of temperature  -  Fresh weight  -  Fruit growth  -  Greenhouse cucumbers  -  Growing degree days  -  Model-based  -  Prediction accuracy   -  Root mean squared errors  -  Satisfactory predictions  -  Simulation models  -  Theoretical basis  -  Thermal effectiveness

Classification code:  723 Computer Software, Data Handling and Applications  -  731.1 Control Systems  -  741.1 Light/Optics  -  744 Lasers  -  922.2 Mathematical Statistics  -  802.2 Chemical Reactions  -  821.4 Agricultural Products  -  821.6 Farm Buildings and Other Structures  -  912.2 Management  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  711 Electromagnetic Waves  -  671 Naval Architecture  -  402.1 Industrial and Agricultural Buildings  -  443.1 Atmospheric Properties  -  621 Nuclear Reactors  -  622.2 Radiation Effects  -  654.1 Rockets and Missiles  -  655.2 Satellites  -  657.1 Solar Energy and Phenomena  -  662.1 Automobiles

Database:  Compendex

  44.   Accession number:  20092712172595

Title:  Effect of different light emitting diode sources on tomato fruit quality during color-changed period

Authors:  Chen, Qiang1 ; Liu, Shiqi1 ; Zhang, Zikun1 ; Cui, Huiru1 ; Hao, Shuqin1 ; Liu, Zhongliang1 

Author affiliation:  1  State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China

Corresponding author:  Liu, S. (sqliu@sdau.edu.cn) 

Source title:  Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  5

Issue date:  May 2009

Publication year:  2009

Pages:  156-161

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

Publisher:  Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China

Abstract:  Red light, blue light, red + blue (R+B) light generated by light-emitting diode were applied during tomato color-changed period, and white light generated by fluorescent lamps was used as control. The effects of different light qualities on fruit quality of tomato were studied. The results showed that the lycopene content was the highest and the vitamin C(Vc) content was the lowest under red light among the treatments. The contents of Vc and soluble protein were significantly increased under blue light. There was no obvious difference in Vc content under R+B light treatment and the control, but R+B light had the superiority in promoting the content of soluble protein. The red light and R+B light were the most effective for the increase of the contents of the soluble sugar and titratable acid. Sugar acid ratio under all treatments were significantly higher than that under the control, and it was the greatest under R+B light treatment. The conclusion is that the major light qualities influencing tomato fruit quality during color-changed period are red light and blue light.

Number of references:  26

Main heading:  Quality control

Controlled terms:  Acids  -  Color  -  Diodes  -  Fluorescent lamps  -  Fruits  -  Light emission  -  Light emitting diodes  -  Lighting  -  Physical optics  -  Quality assurance   -  Quality function deployment  -  Sugar (sucrose)  -  Sugars  -  Total quality management  -  Water analysis

Uncontrolled terms:  Blue light  -  Fruit quality  -  Light emitting diodes (LED)  -  Light quality  -  Light treatments  -  Lycopene content  -  Red light  -  Soluble proteins  -  Soluble sugars  -  Sugar acid   -  Titratable acid  -  Tomato fruits  -  Vitamin C  -  White light