1.   Accession number:  20094512438283

Title:  Effects of cropping years on soil salinity and pH value in fields under drip irrigation condition

Authors:  Tan, Junli1, 2 ; Kang, Yuehu1 ; Jiao, Yanping1 ; Liu, Wei3 ; Dong, Feng3 

Author affiliation:  1  Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Acad. of Sci., Beijing 100101, China

2  College of Civil Engineer and Water Conservancy, Ningxia University, Yinchuan 750021, China

3  Ningxia Hui Autonomous Region Office of Integrated Agricultural Development Project, Yinchuan 750000, China

Corresponding author:  Kang, Y. (kangyh@igsnrr.ac.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  43-50

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 sustainability of saline-alkali soil improvement with drip irrigation, the authors carried out a field experiment combined with the method of space-time conversion. The research studied the changes of soil salinity and pH value in the first, second, third and fourth year after waxy corn planting in saline-alkali soil using drip irrigation technology. Results showed that soil salt was leached at different extents of the lands with different reclaimed years. The decreasing rate was in the range from 24.7% to 43.9%, and that was particularly evident in the new reclaimed lands. At the same time soil salinity of the 0-150 cm soil profile had a decreasing trend with the increase of reclaimed years. The soil salinity of 0-60 cm reduced more quickly, however, that of 60-150 cm decreased relatively slowly. The pH value of 0-150 cm soil profile had a deceasing trend with the increase of reclaimed years as well. In a word, after one year to four years using drip irrigation technology, soil salinity and pH value are decreased.

Number of references:  20

Main heading:  pH effects

Controlled terms:  Alkalinity  -  Irrigation  -  Leaching  -  Salinity measurement  -  Soils

Uncontrolled terms:  Drip irrigation  -  Field experiment  -  In-field  -  pH value  -  Reclaimed land  -  Salt-affected soils  -  Soil improvement  -  Soil profiles  -  Soil salinity  -  Space-time conversion   -  Waxy corn

Classification code:  821.3 Agricultural Methods  -  802.3 Chemical Operations  -  801.1 Chemistry, General  -  943.3 Special Purpose Instruments  -  533.1 Ore Treatment  -  471.4 Seawater, Tides and Waves  -  444 Water Resources  -  483.1 Soils and Soil Mechanics

DOI:  10.3969/j.issn.1002-6819.2009.09.008

Database:  Compendex

2.   Accession number:  20094512438280

Title:  Experiments on factors affecting ponding time under soil infiltration conditions

Authors:  Li, Xuezhuan1, 3 ; Fan, Guisheng2 ; Wang, Xue2 

Author affiliation:  1  College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

2  College of Water Conservancy Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

3  Shanxi Water Conservancy Technical College, Yuncheng 044000, China

Corresponding author:  Fan, G. (lxz488@tom.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  27-31

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 water supply intensity, soil bulk density, initial soil moisture and soil texture on infiltration ponding time under the condition of non-sufficient water supply, and build mathematical relation on infiltration ponding time and each factor, infiltration experiments with eight kinds of homogenized soils under non-sufficient water supply condition were conducted indoors. The results showed a negative-exponent power function relationship between water supply intensity and infiltration ponding time, and logarithmic function relationship between soil bulk density, initial soil moisture, soil texture and infiltration ponding time. The research is of an important significance for studying soil and water conservation and hydrology runoff, and also of practical meaning for instructing the design of sprinkler irrigation system.

Number of references:  15

Main heading:  Soil conservation

Controlled terms:  Experiments  -  Groundwater  -  Moisture determination  -  Permittivity  -  Ponding  -  Seepage  -  Soil mechanics  -  Soil moisture  -  Sprinkler systems (irrigation)  -  Textures   -  Water conservation  -  Water supply  -  Water supply systems

Uncontrolled terms:  Initial soil moisture  -  Logarithmic functions  -  Mathematical relation  -  Non-sufficient water supply  -  Power functions  -  Soil and water conservation  -  Soil bulk density  -  Soil infiltration  -  Soil textures  -  Sprinkler irrigation

Classification code:  701 Electricity and Magnetism  -  708.1 Dielectric Materials  -  821.1 Agricultural Machinery and Equipment  -  821.3 Agricultural Methods  -  901.3 Engineering Research  -  933 Solid State Physics  -  944.2 Moisture Measurements  -  483.1 Soils and Soil Mechanics  -  402 Buildings and Towers  -  403.1 Urban Planning and Development  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  441 Dams and Reservoirs; Hydro Development  -  444 Water Resources  -  444.2 Groundwater  -  446.1 Water Supply Systems

DOI:  10.3969/j.issn.1002-6819.2009.09.005

Database:  Compendex

3.   Accession number:  20094512438287

Title:  Effects of particle sizes on the N2O emission of soil irrigated with nitrogen in freezing and thawing process

Authors:  Wang, Feng1 ; Bai, Lijing1 ; Zhang, Keqiang1 ; Huang, Zhiping1 ; Yang, Peng1 

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

Corresponding author:  Wang, F. (wangfeng_530@163.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  69-73

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:  Through simulated experiments in fridge, the effects of soil particle sizes (1 cm and 0.25 mm) irrigated with three kinds of nitrogen forms (ammonium, nitrate and amide-N) and three concentrations (40, 200 and 800 mg/L) on the fluvio-aquatic soil N2O emission flux in freezing and thawing process were conducted. The results showed that: before soil freezing, the N2O emission fluxes of coarse soil were smaller than those of the fine particle with the exception of nitrate concentration of more than 200 mg/L. And fine soil could reach stable N2O emission flux earlier than coarse soil in the freezing stage. The fine soils could also reach N2O emission peaks earlier than coarse soils in the thawing stage, but the peak values of N2O emission were mostly smaller than those of the coarse soil. With nitrogen concentration increasing, the coarse soils of the average cumulative soil N2O emissions (three kinds of nitrogen forms) increased by 45.46%, 7.81% and 46.87% compared with the fine soils, respectively. The paper proposed irrigation with nitrogen in winter should try to avoid nitrate fertilizer, reduce the ammonium nitrogen fertilizer concentration, and break the coarse particle size of soil after irrigation with nitrogen in winter in order to reduce N2O emissions.

Number of references:  19

Main heading:  Soil pollution

Controlled terms:  Amides  -  Ammonium compounds  -  Concentration (process)  -  Emission control  -  Freezing  -  Irrigation  -  Nitrates  -  Nitrogen  -  Nitrogen fertilizers  -  Particle size   -  Soil mechanics  -  Soils  -  Thawing  -  Wastewater treatment

Uncontrolled terms:  Ammonium nitrogen  -  Coarse particles  -  Coarse soils  -  Emission fluxes  -  Emission peaks  -  Fine particles  -  Freezing and thawing  -  Freezing/thawing  -  N2O  -  Nitrate concentration   -  Nitrogen concentrations  -  Nitrogen form  -  Peak values  -  Simulated experiments  -  Soil freezing  -  Soil particle size

Classification code:  804.1 Organic Compounds  -  804.2 Inorganic Compounds  -  821.2 Agricultural Chemicals  -  821.3 Agricultural Methods  -  822.2 Food Processing Operations  -  931.2 Physical Properties of Gases, Liquids and Solids  -  943.2 Mechanical Variables Measurements  -  804 Chemical Products Generally  -  451.2 Air Pollution Control  -  452.4 Industrial Wastes Treatment and Disposal  -  454.2 Environmental Impact and Protection  -  483.1 Soils and Soil Mechanics  -  619.1 Pipe, Piping and Pipelines  -  644.1 Refrigeration Methods  -  802.3 Chemical Operations

DOI:  10.3969/j.issn.1002-6819.2009.09.012

Database:  Compendex

4.   Accession number:  20094512438309

Title:  Stability design methods for steel frame of agricultural gutter-connected greenhouse

Authors:  Qi, Fei1 ; Tong, Genshu2 

Author affiliation:  1  Chinese Academy of Agricultural Engineering, Beijing 100125, China

2  College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China

Corresponding author:  Tong, G. (tonggs@ccea.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:  9

Issue date:  September 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:  Stability analysis is the key step in gutter-connected greenhouse structure design. The traditional theories of stability analysis of steel structure of civil engineering are used in agricultural greenhouse structure design in China at present. The theories being used can not reflect the real mechanical reaction characteristics of the greenhouse structure in which the small thin-walled section was used. The steel consumption is increased meanwhile. The latest theoretical research and practical achievements were utilized, and the traditional length coefficient method and revised length coefficient method were analyzed in detail. Based on that all types of greenhouses are of equal height, and the lateral buckling of frames has overall nature, this paper proposed the new methods for checking the stability of greenhouse steel frame, revised effective length coefficient method and storey-based stability coefficient method which considered the inter-action between columns during overall buckling with the help of theoretical analyses and comparisons of a large amount of finite element calculations. On the condition that side post and mid-post of most greenhouses use different sections at present the proposed methods can get better technical and economical effects in the design of greenhouse steel structure frame.

Number of references:  22

Main heading:  Structural design

Controlled terms:  Civil engineering  -  Greenhouses  -  Roofs  -  Stability  -  Steel construction  -  Steel structures  -  Structural frames

Uncontrolled terms:  Agricultural greenhouse  -  Coefficient methods  -  Economical effects  -  Effective length coefficient  -  Finite element calculations  -  Frame  -  Greenhouse structure  -  Lateral buckling  -  Overall buckling  -  Reaction characteristics   -  Stability analysis  -  Stability coefficient  -  Stability design  -  Steel consumption  -  Steel frame  -  Structures  -  Theoretical research  -  Thin-walled sections

Classification code:  619.2 Tanks  -  731.4 System Stability  -  801 Chemistry  -  821.6 Farm Buildings and Other Structures  -  931 Classical Physics; Quantum Theory; Relativity  -  951 Materials Science  -  961 Systems Science  -  545.3 Steel  -  402 Buildings and Towers  -  402.1 Industrial and Agricultural Buildings  -  405.2 Construction Methods  -  408.1 Structural Design, General  -  408.2 Structural Members and Shapes  -  409 Civil Engineering, General  -  415.1 Metal Structural Materials

DOI:  10.3969/j.issn.1002-6819.2009.09.036

Database:  Compendex

5.   Accession number:  20094512438332

Title:  Effects of AnsiP-S (1-MCP) treatment on physiology of postharvest senescence in kiwifruit during cold storage

Authors:  She, Wenqin1 ; Zhao, Xiaoling1 ; Lin, Hetong2 

Author affiliation:  1  College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China

2  College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China

Corresponding author:  Lin, H. (hetonglin@163.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  333-338

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 AnsiP-S (1-MCP), a new type of preservative, on physiology of postharvest senescence in kiwifruit were investigated. The harvested ''Jingkui' kiwifruit (Acitindia deliciosa cv. Jinkui) and 'Miliang No.1' kiwifruit (Actinidia deliciosa cv. Miliang No.1) fruits were treated with AnsiP-S (2.5 kg fruit per AnsiP-S chip, the effective concentration of 1-MCP was 1 mg/L), then the fruits were stored at (5±1)°C. During fruit storage, respiration rate, cell membrane permeability, malondialdehyde (MDA) content, activities of active oxygen scavenging enzymes such as superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT), contents of endogenous antioxidant substances such as ascorbic acid (AsA) and glutathione (GSH) were determined. The results showed that compared with the control fruits, the treatment with AnsiP-S (2.5 kg fruit per AnsiP-S chip) lowered respiration rate and delayed the respiratory peak of kiwifruit, kept higher activities of SOD, POD and CAT, and higher contents of AsA and GSH, decreased MDA content, and delayed an increase of cell membrane permeability. There were lower MDA content and cell membrane permeability of 'Miliang No.1' kiwifruit compared with 'Jingkui' kiwifruit. During fruit storage at (5±1)°C, 'Jingkui' kiwifruit tended to be more easily senescent compared with 'Miliang No.1' kiwifruit. AnsiP-S treatment can delay the senescence of 'Jinkui' kiwifruit and 'Miliang No.1' kiwifruit, and prolong fruit storage period.

Number of references:  20

Main heading:  Fruits

Controlled terms:  Aldehydes  -  Capillarity  -  Cell membranes  -  Cold storage  -  Cytology  -  Image storage tubes  -  Ionization of gases  -  Ketones  -  Organic acids  -  Oxygen   -  Physiology  -  Plants (botany)  -  Refrigerators  -  Scavenging

Uncontrolled terms:  Active oxygen  -  AnsiP-S (1-MCP)  -  Ascorbic acids  -  Cell membrane permeability  -  Effective concentration  -  Fruit storage  -  Glutathiones  -  Kiwifruit  -  Kiwifruits  -  Malondialdehyde   -  Postharvest  -  Respiration rate  -  Superoxide dismutases

Classification code:  821.4 Agricultural Products  -  804.1 Organic Compounds  -  804 Chemical Products Generally  -  802.2 Chemical Reactions  -  714.1 Electron Tubes  -  931.2 Physical Properties of Gases, Liquids and Solids  -  694.4 Storage  -  631.1 Fluid Flow, General  -  612.1 Internal Combustion Engines, General  -  461.9 Biology  -  461.2 Biological Materials and Tissue Engineering  -  644.3 Refrigeration Equipment and Components

DOI:  10.3969/j.issn.1002-6819.2009.09.059

Database:  Compendex

6.   Accession number:  20094512438302

Title:  Comparison of spatial interpolation methods for maize growth period

Authors:  Yang, Yang1 ; Yang, Jianyu1 ; Li, Shaoming1 ; Zhang, Xiaodong1 ; Zhu, Dehai1 

Author affiliation:  1  College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China

Corresponding author:  Yang, J. (caurwx@gmail.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  163-167

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 guiding the cultivation of different regions, accurately estimating the maize growing period of the main maize-growing areas is of great significance. The different methods of interpolation principle were studied, such as inverse distance weighting(IDW), radial basis functions(RBF), and Kriging. Data source of five stages summer maize growing period was deal with spatial interpolation in the Huang-Huai-Hai summer maize area. The final surface accuracy was analyzed by the cross-certification. The results showed that in the sowing stage or seeding stage, or maturity stage, the most suitable method for interpolation was RBF, of which root-mean-squares were 5.077, 5.320, 5.243 d, while in the jointing stage and heading stage, interpolation of the best method was IDW, of which root-mean-squares were 7.826, 6.403 d. The distribution of sowing and seeding from southwest to northeast was gradually postponed, and the remaining stages of reproductive age, on both sides based on the axis of southeast and northwest were gradually postponed.

Number of references:  15

Main heading:  Interpolation

Controlled terms:  Cultivation  -  Radial basis function networks

Uncontrolled terms:  Artificicial intelligence  -  Inverse distance weighting  -  Kriging  -  Radial basis functions  -  The maize growing period

Classification code:  723.4 Artificial Intelligence  -  821.3 Agricultural Methods  -  921.6 Numerical Methods

DOI:  10.3969/j.issn.1002-6819.2009.09.029

Database:  Compendex

7.   Accession number:  20094512438295

Title:  Experiment on stalk mechanical properties of legume forage and grasses

Authors:  Zhao, Chunhua1 ; Zhang, Fengwei1 ; Cao, Zhizhong2 

Author affiliation:  1  College of Engineering, Gansu Agricultural University, Lanzhou 730070, China

2  Pratacultural College of Gansu Agricultural University, Lanzhou 730070, China

Corresponding author:  Cao, Z. (caozz@gsau.edu.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  122-126

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 evaluate forage stalk with mechanical properties, four kinds of stalks in harvesting period of perennial forage legumes and grasses such as Medicago sativa, Coronilla varia, Bromus inermis Leyss, Agropyron cristatuml were chosen to perform the experiments of tensile and shear by means of 500 N electronic universal testing machine. The mechanical properties such as maxinum loads, stress, strain and young's modulus were measured and relevant changing trends were studied with statistical software. The results showed that it was power function negative correlation between the diameter and the tensile strength of forage legumes and grasses. It was not significantly different between perennial forage legumes and grasses'stalks in diameter. The stalk diameter of forage legume was a little larger than that of grass, but the tensile strength of grasses'stalks was 3-4 times than that of forage legumes'stalks. The experiment also testified that the shear strength decreased along with the increasing of diameter. At the speed of 100 mm/min of load addition, the resistance of vertical cutting was the largest. The resistance of oblique cutting was reduced by 30%-40% compared with that of vertical cutting. The resistance of slippery cutting was reduced by 50%-60% compared with that of vertical cutting with the slippery angle of 30°. The conclusions provide the theoretical foundation to design herbage haverster, baler and herbage deep processing facility.

Number of references:  15

Main heading:  Tensile strength

Controlled terms:  Computer graphics  -  Experiments  -  Mechanical properties  -  Plants (botany)  -  Shear strength  -  Strain  -  Stresses  -  Tensile testing

Uncontrolled terms:  Changing trends  -  Deep processing  -  Forage legumes  -  Forage stalks  -  Harvesting periods  -  Medicago  -  Negative correlation  -  Oblique cutting  -  Power functions  -  Statistical software   -  Theoretical foundations  -  Universal testing machines  -  Young's Modulus

Classification code:  931.1 Mechanics  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  901.3 Engineering Research  -  723.5 Computer Applications  -  951 Materials Science  -  461.9 Biology  -  422 Strength of Building Materials; Test Equipment and Methods  -  421 Strength of Building Materials; Mechanical Properties  -  408.1 Structural Design, General  -  422.2 Test Methods

DOI:  10.3969/j.issn.1002-6819.2009.09.022

Database:  Compendex

8.   Accession number:  20094512438296

Title:  Tests and analyses of mechanical properties of peanut root, stem and nut node in mechanical harvest

Authors:  Yang, Ranbing1, 2 ; Xu, Yufeng1 ; Liang, Jie1 ; Shang, Shuqi1 ; Sun, Tongzhen1 ; Li, Guoying1 

Author affiliation:  1  College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China

2  College of Engineering, Shenyang Agricultural University, Shenyang 110161, China

Corresponding author:  Shang, S. (sqshang@qau.edu.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  127-132

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:  In order to reduce the nut-losing rate and damaging rate in the process of peanut digging harvest, nut picking and shelling, especially in the process of peanut combine, the authors carried out experiments and analyzed the results on the mechanical properties of tensile and shear stress of the peanut stem, stem root node, nut root node and husk union, respecively, which used CTM-4503 type universal material testing machines and relevant testing equipments. The peanut for testing was obtained in nearly one month interval of peanut harvest time. Through the tests, the authors analyzed the maximun allowable tensile resistance and allowable shearing stress of peanut stem, stem root node, nut root node and husk union place. Through the mechanical analyse, the best harvesting time of peanut was determined. Taking Luhua No.14 peanut as an example, the best harvesting time was (122±1) days after sowing. The maximum allowable clamping force (49.71 N) and the maximum allowable tensile force (70.84 N) were given in the process of peanut combined clamping harvest at present and the tests showed that rupture of stem root node in peanut harvest was the main part of mechanical loss with the percentage of 95.7%. According to the operation quality index in operating quality industry standard for peanut harvesters given by Chinese Ministry of Agriculture, the maximum tensile force, 9.51 N, was given. Through the shear tests of the husk union place, the maximum shearing stress of the husk union place in different period was given. All those provide reference for equipment design and development of peanut harvester, nut picking and shelling, especially for that of combine harvester devices.

Number of references:  16

Main heading:  Mechanical properties

Controlled terms:  Harvesters  -  Harvesting  -  Shearing  -  Stresses  -  Tensile testing  -  Testing

Uncontrolled terms:  Clamping Force  -  Combine harvesters  -  Equipment design  -  Harvest time  -  Industry standards  -  Material testing  -  Maximum tensile force  -  Mechanical harvest  -  Mechanical loss  -  Operation quality   -  Peanut  -  Root nodes  -  Shear tests  -  Shearing stress  -  Shearing tests  -  Tensile forces  -  Tensile resistance  -  Tensile tests  -  Testing equipment  -  Tests and analysis

Classification code:  931.1 Mechanics  -  821.3 Agricultural Methods  -  821.1 Agricultural Machinery and Equipment  -  604.1 Metal Cutting  -  951 Materials Science  -  535.1 Metal Rolling  -  422.2 Test Methods  -  421 Strength of Building Materials; Mechanical Properties  -  408.1 Structural Design, General  -  423.2 Test Methods

DOI:  10.3969/j.issn.1002-6819.2009.09.023

Database:  Compendex

9.   Accession number:  20094512438322

Title:  Response of land surface temperature to coastal land use/cover change by remote sensing

Authors:  Gao, Zhiqiang1, 2 ; Ning, Jicai1 ; Gao, Wei2 

Author affiliation:  1  Institute of Geographical Sciences and Resources Research, Chinese Acad. of Sci., Beijing 100101, China

2  School of Resources and Environment Sciences, East Normal University, Shanghai 200062, China

Corresponding author:  Gao, W. (wgao419@gmail.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  274-281

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 nearly two phase TM/ETM remote sensing data, by using extraction of two land use/land cover (LUCC) of information and the corresponding land surface temperature(LST), combined with research results of seawater intrusion along coast of the Laizhou Bay in Shandong Province over the past 20 years, spatial pattern and variationof impacts of LUCC on LST were analyzed. The study found that under influence of seawater intrusion, the study area of coast of Laizhou bay covered mainly with farmland, saline-alkali land, construction land and salt land, the unused land (saline-alkali land, beach) accounted for a high proportion. As the distance from the sea, the degree of land use obviously changed. Under influence of coastal economic development and LUCC, the area increase of water body and vegetation cover led to decrease of LST in study area, the average LST was 30.8°C in 1987 and 29.2°C in 2000, the LST in 2000 reduced 1.62°C against to that in 1987. Seawater intrusion significantly affected the spatial pattern of land cover and changes, LUCC was impacted evidently on the spatial distribution and changes of LST along coastal areas of Laizhou bay. The change of LST is closely related to change of land use. This study would provide scientific reference and basis for decision making for ecological and environmental protection along coastal wetlands and beach land development.

Number of references:  23

Main heading:  Atmospheric temperature

Controlled terms:  Beaches  -  Coastal engineering  -  Coastal zones  -  Economics  -  Land use  -  Remote sensing  -  Salt water intrusion  -  Seawater  -  Soils  -  Space time adaptive processing   -  Surface measurement  -  Surface properties  -  Wetlands

Uncontrolled terms:  Coastal area  -  Coastal lands  -  Coastal wetlands  -  Construction land  -  Economic development  -  Laizhou Bay  -  Land cover  -  Land development  -  Land surface temperature  -  Land use/land cover   -  Remote sensing data  -  Research results  -  Response  -  Seawater intrusion  -  Shandong province  -  Spatial distribution  -  Spatial patterns  -  Study areas  -  Two phase  -  Vegetation cover   -  Waterbodies

Classification code:  971 Social Sciences  -  716.1 Information Theory and Signal Processing  -  716.2 Radar Systems and Equipment  -  731.1 Control Systems  -  901.4 Impact of Technology on Society  -  911.2 Industrial Economics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  943.2 Mechanical Variables Measurements  -  951 Materials Science  -  483.1 Soils and Soil Mechanics  -  403 Urban and Regional Planning and Development  -  407.3 Coastal Engineering  -  442.2 Land Reclamation  -  481.1 Geology  -  443.1 Atmospheric Properties  -  471 Marine Science and Oceanography  -  471.4 Seawater, Tides and Waves  -  444 Water Resources

DOI:  10.3969/j.issn.1002-6819.2009.09.049

Database:  Compendex

10.   Accession number:  20094512438317

Title:  Effect of ventilation rate on co-composting of night soil and leaf

Authors:  Sun, Xiaojie1 ; Wang, Hongtao1 ; Lu, Wenjing1 

Author affiliation:  1  Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China

Corresponding author:  Wang, H. (htwang@mail.tsinghua.edu.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  249-253

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:  Aerobic static co-composting of night soil and leaf under different ventilation rates of 0.08, 0.14 and 0.2 m3/(min·m3) was studied in pilot scale for obtaining the best ventilation rate. The indexes such as temperature, CO2 concentration, germination index, fertilizer efficiency such as nitrogen, phosphorus and potassium and contents of heavy metals were analyzed to examine the feasibility of co-composting of night soil and leaf. Results show that: when the wet basis ratio of night soil and leaf was 3/1, night soil and green waste (leaf) can realize co-composting under different ventilation rates of 0.08, 0.14 and 0.20 m3/(min·m3). And the optimal ventilation rate was 0.14 m3/(min·m3). The fertilizer efficiency and content of heavy metals of co-composting products accord with the national standard.

Number of references:  16

Main heading:  Waste treatment

Controlled terms:  Heavy metals  -  Manures  -  Nitrogen fertilizers  -  Phosphorus  -  Potassium  -  Soils  -  Ventilation

Uncontrolled terms:  Cocomposting  -  Fertilizer efficiency  -  Germination index  -  Green wastes  -  Leaf  -  National standard  -  Night soil  -  Pilot scale  -  Ventilation rate

Classification code:  821.5 Agricultural Wastes  -  821.2 Agricultural Chemicals  -  804 Chemical Products Generally  -  643.5 Ventilation  -  549.1 Alkali Metals  -  531 Metallurgy and Metallography  -  483.1 Soils and Soil Mechanics  -  452.4 Industrial Wastes Treatment and Disposal  -  452.3 Industrial Wastes

DOI:  10.3969/j.issn.1002-6819.2009.09.044

Database:  Compendex

11.   Accession number:  20094512438305

Title:  Reactive power optimal approach in rural power network considering load uncertainty

Authors:  Meng, Xiaofang1 ; Piao, Zailin1 ; Wang, Jue1 

Author affiliation:  1  College of Information and Electric Engineering, Shenyang Agricultural University, Shenyang 110161, 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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  182-187

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 adaptability and validity of reactive power optimization, the load uncertainties were accounted in this paper, and load coefficient and power factor were taken as fuzzy number. In this application, after load data analyzed, three load levels were given. The basis of known node voltage and sending end power of the feeder, and the main line was determined after the power flow analysis. According to the optimum of power losses at the maximum load to determine the var compensation positions, and then the upper and lower limits of reactive power compensation capacity was calculated for the least accounting expenditure cost. The method proposed was applied to a real grid example of Keshike Teng County, Chifeng, Inner Mongolia for illustration. By calculation, analysis and comparison, the results show that the loss is significantly reduced for the method when the loads are changed, and the method can adapt to the needs of reactive power optimization of the rural power network.

Number of references:  13

Main heading:  Uncertainty analysis

Controlled terms:  Cost accounting  -  Cost benefit analysis  -  Electric lines  -  Electric network analysis  -  Electric power factor  -  Electric power transmission networks  -  Fuzzy sets  -  Optimization  -  Power converters  -  Reactive power

Uncontrolled terms:  Accounting expenditure cost  -  Electric network  -  Fuzzy numbers  -  Inner Mongolia  -  Load coefficients  -  Load data  -  Load levels  -  Load uncertainty  -  Lower limits  -  Maximum load   -  Node voltages  -  Power factors  -  Power flow analysis  -  Power networks  -  Power-losses  -  Reactive power compensation  -  Reactive power optimization  -  Rural power network  -  VAR compensation

Classification code:  922.1 Probability Theory  -  706.2 Electric Power Lines and Equipment  -  911 Cost and Value Engineering; Industrial Economics  -  911.1 Cost Accounting  -  912.2 Management  -  921 Mathematics  -  921.5 Optimization Techniques  -  706.1.1 Electric Power Transmission  -  705.3 Electric Motors  -  704.2 Electric Equipment  -  703.1.1 Electric Network Analysis  -  703.1 Electric Networks  -  701.1 Electricity: Basic Concepts and Phenomena  -  706 Electric Transmission and Distribution

DOI:  10.3969/j.issn.1002-6819.2009.09.032

Database:  Compendex

12.   Accession number:  20094512438299

Title:  Hyperspectral identification of rice diseases and pests based on principal component analysis and probabilistic neural network

Authors:  Li, Bo1, 2 ; Liu, Zhanyu2, 3, 4 ; Huang, Jingfeng2, 3, 4 ; Zhang, Lili5 ; Zhou, Wan5 ; Shi, Jingjing4 

Author affiliation:  1  Institute of Public Administration, Zhejiang University, Hangzhou 310028, China

2  Key Laboratory of Agricultural Remote Sensing and Information System in Zhejiang Province, Hangzhou 310029, China

3  Research Center of Agricultural Information Science and Technology, Zhejiang University in Zhejiang Province, Hangzhou 310029, China

4  Institute of Agricultural Remote Sensing and Information Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China

5  General Station of Plant Protection and Soil-Fertilizer of Hangzhou, Hangzhou 310020, China

Corresponding author:  Huang, J. (hjf@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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  143-147

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:  Correct and fast identification of rice diseases and pests was the basis of diseases and pests prevention measures, and significant in disaster assessment. This study adopted spectral reflectance of rice leaves stressed by rice Aphelenchoides besseyi Christie of two periods at the rice booting stage and by rice leaf roller of two periods at the rice tillering stage. With the analysis of the spectral characteristics of rice leaves, visible band (490-670 nm) and short wave infrared band (1520-1750 nm) were selected. The principal components spectrum were obtained with principal component analysis (PCA) transformed from the above two selected band. The recognition precision of rice Aphelenchoides besseyi Christie and rice leaf roller using probabilistic neural network (PNN) was as high as 95.65%. The research demonstrated that the method was feasible and reliable to precisely identify non-healthy rice stressed by rice diseases and pests from healthy rice based on PCA and PNN.

Number of references:  15

Main heading:  Principal component analysis

Controlled terms:  Disaster prevention  -  Interferometry  -  Neural networks  -  Rollers (machine components)  -  Spectrum analysis  -  Spectrum analyzers

Uncontrolled terms:  Christie  -  HyperSpectral  -  Prevention measures  -  Principal Components  -  Probabilistic neural networks  -  Rice  -  Rice leaf  -  Rice leaves  -  Short wave infrared bands  -  Spectral characteristics   -  Spectral reflectances  -  Visible band

Classification code:  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941.4 Optical Variables Measurements  -  941 Acoustical and Optical Measuring Instruments  -  922.2 Mathematical Statistics  -  921 Mathematics  -  914.1 Accidents and Accident Prevention  -  723.4 Artificial Intelligence  -  601.2 Machine Components  -  461.1 Biomedical Engineering

DOI:  10.3969/j.issn.1002-6819.2009.09.026

Database:  Compendex

13.   Accession number:  20094512438289

Title:  Nutrient release characteristics of water soluble resin coated controlled release fertilizers and their influential factors

Authors:  Yu, Jiangang1 ; Liu, Fang1 ; Fan, Xiaolin1 ; Li, Ning2 

Author affiliation:  1  Fertilizer Science and Balanced Fertilization Research Laboratory, College of Nature Resources and Environment, South China Agricultural University, Guangzhou 510642, China

2  Hanfeng Slow Release Fertilizer Limited Company, Shanghai 201210, China

Corresponding author:  Li, N. (xlfan@scau.edu.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  84-89

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 discuss the nutrient release characteristics from coated controlled release fertilizers(CRFs) of different N-P-K ratios, with the same coated technology, two kinds of CRFs coated by water soluble resin were made for involving the different N-P-K ratios of kernel fertilizers with the same thickness and the same N-P-K ratio of kernel fertilizer with different thickness. The CRFs were incubated in pure water with normal and high temperatures, which aimed to study the effects of kernel fertilizers, coating thickness and culture temperature on the nutrient release characteristics. Results showed that under (25±0.5)°C or (40±0.5)°C, CRFs with a high nitrogen content kernel (HNCRF) had cumulative release sigmoid curve while amount of coating material was 50 g/m2 or 70 g/m2. Increasing coating thickness or reducing incubation temperature could prolong its nutrient lag period in the prophase of incubation. Under (25±0.5)°C, CRFs of high potassium compound (HKCRF) and the balanced N-P-K ratios of kernel fertilizer (TCCRF) had cumulative release parabolic curve with coating material content of 50 g/m2. The curve was translated to double parabolic pattern with the coating material of 70 g/m2, but under (40±0.5)°C, all were parabolic curves. The three factors affected not only nutrient release curves, but also the longevity of nutrients. Increasing coating thickness or reducing temperature could prolong the longevity of fertilizer. Longevity of nitrogen or phosphorus fertilizer had an order as HNCRF>HKCRF>TCCRF, and longevity of potassium fertilizer had anther order as HKCRF>HNCRF>TCCRF. In short, the nutrient release characteristics of coated NPK fertilizers were influenced by coating thickness, kernel fertilizers and incubation temperature simultaneously. The form of curve tended to a parabola with quick nutrient release, contrarily, the form of curve tended to a sigmoid. The high nitrogen content kernel fertilizer could work best controlled release performance of water soluble resin among three types of the kernel fertilizers.

Number of references:  16

Main heading:  Nitrogen fertilizers

Controlled terms:  Agricultural chemicals  -  Coatings  -  Nitrogen  -  Nutrients  -  Phosphorus  -  Plating  -  Potassium  -  Potassium fertilizers  -  Resins  -  Thickness measurement   -  Water content

Uncontrolled terms:  Coating material  -  Coating thickness  -  Controlled release  -  Controlled release fertilizer  -  Controlled-release fertilizers  -  Culture temperature  -  Different thickness  -  High nitrogen content  -  High temperature  -  Incubation temperature   -  Incubation temperatures  -  Influential factors  -  Lag period  -  Nutrient release  -  Nutrient release characteristics  -  Parabolic curve  -  Phosphorus fertilizer  -  Pure water  -  Reducing temperature  -  Sigmoid curves   -  Watersoluble

Classification code:  804 Chemical Products Generally  -  804.2 Inorganic Compounds  -  813.2 Coating Materials  -  943.3 Special Purpose Instruments  -  815.1.1 Organic Polymers  -  822.3 Food Products  -  943.2 Mechanical Variables Measurements  -  821.2 Agricultural Chemicals  -  803 Chemical Agents and Basic Industrial Chemicals  -  549.1 Alkali Metals  -  423.2 Test Methods  -  444 Water Resources  -  454.3 Ecology and Ecosystems  -  461.9 Biology  -  539 Metals Corrosion and Protection; Metal Plating  -  539.3 Metal Plating

DOI:  10.3969/j.issn.1002-6819.2009.09.015

Database:  Compendex

14.   Accession number:  20094512438325

Title:  Effect of crop stubble on wind field above field surface during fallow period of cropland

Authors:  Liu, Muxing1 ; Liu, Lianyou2, 3 

Author affiliation:  1  College of City and Environmental Science, Huazhong Normal University, Wuhan 430079, China

2  Key Laboratory of Environment Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China

3  College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China

Corresponding author:  Liu, M. (liumx@ires.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  295-300

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:  Crop stubble is effective for soil wind erosion control during fallow period of cropland, whereas more studies are needed on the mechanism of different crop stubble treatments to prevent wind erosion. Through field test, wind profiles for four kinds of crop stubble and grassland covered with Agropyron cristatum were observed. Two items of aerodynamic roughness and wind velocity were analyzed comparatively on all the underlying surfaces. The results indicated that compared with grassland, crop stubble treatments decreased wind velocities from the height of 0 to 2 m, and the decrement increased with the increasing of stubble height, decreased with the increasing of observed height. For the sparseness of oilseed rape stubble and thin stem of benne stubble, their wind-breaking effects were worse than wheat stubble and naked oats stubble. In addition, aerodynamic roughness of stubble field increased with the increasing of stubble height, until the heights reached 15, 30, 15 cm for naked oats stubble, oilseed rape stubble and wheat stubble, respectively. So those heights were regarded as the effective stubble heights for wind erosion control. In conclusion, crop stubble with reasonable height could control wind erosion by decreasing wind velocity and reducing near surface wind shear stress.

Number of references:  15

Main heading:  Erosion

Controlled terms:  Aerodynamics  -  Crops  -  Friction  -  Roughness measurement  -  Soil surveys  -  Soils  -  Velocity  -  Wind stress

Uncontrolled terms:  Aerodynamic roughness  -  Field test  -  Friction velocity  -  Near-surface winds  -  Oil seed rape  -  Soil wind erosion  -  Underlying surface  -  Wind erosions  -  Wind field  -  Wind profiles   -  Wind velocities

Classification code:  943.3 Special Purpose Instruments  -  483.1 Soils and Soil Mechanics  -  539.1 Metals Corrosion  -  651.1 Aerodynamics, General  -  811.1 Pulp and Paper  -  821.4 Agricultural Products  -  931.1 Mechanics  -  483 Soil Mechanics and Foundations  -  421 Strength of Building Materials; Mechanical Properties  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  406.2 Roads and Streets  -  406 Highway Engineering  -  402 Buildings and Towers  -  443.1 Atmospheric Properties

DOI:  10.3969/j.issn.1002-6819.2009.09.052

Database:  Compendex

15.   Accession number:  20094512438311

Title:  Mesophilic running of dry fermentation biogas system without heating device and its effects

Authors:  Han, Jie1 ; Xiang, Xin1 ; Li, Xiang1 

Author affiliation:  1  Chinese Academy of Agricultural Engineering, Beijing 100125, China

Corresponding author:  Han, J. (hanjie@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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  215-219

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 measure of temperature rising and heat preservation of membrane covered trough (MCT) dry fermentation biogas system, was brought forward as follows: firstly, the substrate's temperature was increased to that of the upper limit of mesophilicly anaerobic digestion by the process of aerobic pre-treatment of the substrate; secondly, the substrate's temperature was kept within the temperature range of mesophilicly anaerobic digestion by a good thermal insulation layer covering the MCT bioreactor. Experiment was held at the dry fermentation biogas pilot plant, and the results were described as follows: the substrate's temperature changed mildly. The max of temperature drop in one day, occuring in the 9th day, was 0.5°C, the minimum of temperature drop in one day, occuring in the 3rd day , was 0.04°C; the substrate's temperature was rised to 40.62°C by aerobic pre-treatment process, decreased slowly during 21-day period of biogas fermentation and was 35.41°C when anaerobic digestion finished; its average cubage biogas yield rate was 0.598 m3/(m3·d), methane content ranged between 55%-60%. Consequently, it is feasible to improve the cubage biogas yield rate and energy benefit of dry fermentation biogas plant by the measure of temperature improvement and heat preservation.

Number of references:  15

Main heading:  Anaerobic digestion

Controlled terms:  Biogas  -  Bioreactors  -  Fermentation  -  Heating  -  Heating equipment  -  Methanation  -  Methane  -  Pilot plants  -  Substrates  -  Thermal insulation

Uncontrolled terms:  Aerobic pre-treatment  -  Biogas fermentation  -  Biogas plants  -  Dry fermentation  -  Energy benefits  -  Heat preservation  -  Heating devices  -  Mesophilic  -  Mesophilic running  -  Methane content   -  Temperature drops  -  Temperature range  -  Temperature rising  -  Thermal insulation layer  -  Upper limits  -  Yield rates

Classification code:  712.1 Semiconducting Materials  -  714.2 Semiconductor Devices and Integrated Circuits  -  801 Chemistry  -  801.2 Biochemistry  -  802.1 Chemical Plants and Equipment  -  802.2 Chemical Reactions  -  804.1 Organic Compounds  -  805.1.1 Biochemical Engineering  -  813.1 Coating Techniques  -  821.5 Agricultural Wastes  -  912.1 Industrial Engineering  -  643.2 Space Heating Equipment and Components  -  402.1 Industrial and Agricultural Buildings  -  413.2 Heat Insulating Materials  -  452.4 Industrial Wastes Treatment and Disposal  -  461 Bioengineering and Biology  -  461.8 Biotechnology  -  461.9 Biology  -  462.1 Biomedical Equipment, General  -  522 Gas Fuels  -  642.1 Process Heating  -  642.2 Industrial Furnaces and Components  -  643.1 Space Heating

DOI:  10.3969/j.issn.1002-6819.2009.09.038

Database:  Compendex

16.   Accession number:  20094512438306

Title:  Automatic control system for grading pipeline of dyeing bamboo sticks

Authors:  Gao, Yun1 ; Li, Xiaoyu1 ; Chen, Hong1 ; Wang, Wei1 ; Liang, Xiuying1 ; Huang, Hanying1 

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

Corresponding author:  Li, X. (lixiaoyu@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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  188-191

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:  For the current problems of inefficient artificial grading by color in bamboo processing industry, an automatic control system for grading pipeline of dyeing bamboo sticks was proposed. The system, which is based on a single chip microcomputer(SCM) system, includes shooting position sensors, grading position sensors, grading electromagnets and serial port circuit. Information of grading level and the passing order of bamboo sticks were stored in doubly linked list data structure by control algorithm. At the same time the grading position sensor pointer array records the trigger information of grading position sensors and the action of electromagnets was determined by electromagnet stack. Verified by the experiments, the results showed that the accuracy of grading bamboo sticks into eight levels was 100%, which indicated that the system was an effective solution to dyeing bamboo sticks grading.

Number of references:  14

Main heading:  Grading

Controlled terms:  Algorithms  -  Automation  -  Bamboo  -  Control  -  Control theory  -  Data structures  -  Dyeing  -  Electromagnets  -  Pipelines  -  Process control   -  Sensors

Uncontrolled terms:  Automatic control systems  -  Control algorithms  -  Doubly linked list  -  Effective solution  -  Position sensors  -  Processing industry  -  Serial port  -  Single chip microcomputers

Classification code:  802 Chemical Apparatus and Plants; Unit Operations; Unit Processes  -  811.1 Pulp and Paper  -  819.4 Fiber Products  -  801 Chemistry  -  819.5 Textile Products and Processing  -  913.3 Quality Assurance and Control  -  921 Mathematics  -  821.4 Agricultural Products  -  732.2 Control Instrumentation  -  704.1 Electric Components  -  723 Computer Software, Data Handling and Applications  -  723.2 Data Processing and Image Processing  -  619.1 Pipe, Piping and Pipelines  -  723.3 Database Systems  -  731.1 Control Systems  -  732 Control Devices  -  731 Automatic Control Principles and Applications

DOI:  10.3969/j.issn.1002-6819.2009.09.033

Database:  Compendex

17.   Accession number:  20094512438277

Title:  One-dimensional complete hydrodynamic model for border irrigation based on hybrid numerical method

Authors:  Zhang, Shaohui1, 2 ; Xu, Di1, 2 ; Li, Yinong1, 2 

Author affiliation:  1  National Center of Efficient Irrigation Engineering and Technology Research Beijing-Beijing, Beijing 100044, China

2  Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100044, China

Corresponding author:  Zhang, S. (zhangsh@iwhr.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  7-14

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:  Numerical model of border or furrow irrigation flow movement is a necessary tool and approach to design and evaluate surface irrigation systems. A one-dimensional complete hydrodynamic model for border irrigation was established by time-space hybrid numerical method. Then the differences of stability and convergence, the precision and efficiency of one-dimensional complete hydrodynamic model of border irrigation were compared and analyzed between the hybrid numerical method and the Roe finite volume method. At the same time, the computational performance and simulation effect were validated based on the simulation results of typical border irrigation tests. The results show that the hybrid numerical method puts up better numerical stability and convergence, and little water quality balance error and average relative error than the Roe finite volume method, and the former computational efficiency is about three times as much as the in the same measurement circumstances. The one-dimensional complete hydrodynamic model for border irrigation based on the hybrid numerical method can obviously increase computational stability and convergence, and effectively improve computational precision and efficiency, and provide a good numerical simulation tool for the design of border irrigation system and performance evaluation.

Number of references:  16

Main heading:  Convergence of numerical methods

Controlled terms:  Computational efficiency  -  Finite volume method  -  Fluid dynamics  -  Hydrodynamics  -  Irrigation  -  Mathematical models  -  Number theory  -  One dimensional  -  Simulators  -  System stability   -  Water pollution  -  Water quality

Uncontrolled terms:  Average relative error  -  Border irrigation  -  Computational performance  -  Computational precision  -  Computational stability  -  Furrow irrigation  -  Hybrid numerical method  -  Hydrodynamic model  -  Numerical models  -  Numerical simulation   -  Numerical stabilities  -  Performance evaluation  -  Simulation result  -  Stability and convergence  -  Surface irrigation  -  Time-space

Classification code:  662.1 Automobiles  -  671 Naval Architecture  -  723.1 Computer Programming  -  731.4 System Stability  -  821.3 Agricultural Methods  -  921 Mathematics  -  921.6 Numerical Methods  -  931.1 Mechanics  -  961 Systems Science  -  657.1 Solar Energy and Phenomena  -  445.2 Water Analysis  -  453 Water Pollution  -  453.2 Water Pollution Control  -  621 Nuclear Reactors  -  631.1 Fluid Flow, General  -  631.1.1 Liquid Dynamics  -  631.2 Hydrodynamics  -  654.1 Rockets and Missiles  -  655.2 Satellites

DOI:  10.3969/j.issn.1002-6819.2009.09.002

Database:  Compendex

18.   Accession number:  20094512438286

Title:  Desalination process by dredger fill under steady flow in Caofeidian area

Authors:  Liu, Hu1, 2 ; Wei, Zhanmin1 ; Huang, Mingyong2 ; Yin, Chunyan3 ; Zhang, Qing2 

Author affiliation:  1  Water Conservancy and Civil Engineering College, Inner Mongolia Agriculture University, Hohhot 010018, China

2  Tianjin TEDA Landscape Architecture Limited Company, Tianjin 300457, China

3  Soil and Water Conservation Bureau of Wushen Banner, Erdos 017300, China

Corresponding author:  Wei, Z. (wei_zhanmin@yahoo.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  62-68

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:  Using dredger fill to reclaim land from sea is a primary way for expanding expand land space in coastal areas. Based on soil column simulation experiment, the salt leaching process by dredge fill in Caofeidian area was analyzed under constant water head. The leaching requirement and the desalination time of the dredge fill were obtained. The salt transport and desalination mechanism during salt leaching process were discussed in the study area. The results can provide a reference for ecological construction and afforestation of land which is made from dredger fill.

Number of references:  14

Main heading:  Land fill

Controlled terms:  Coastal zones  -  Desalination  -  Dredges  -  Dredging  -  Hydrometallurgy  -  Leaching  -  Reforestation  -  Salinity measurement  -  Waste disposal  -  Water filtration

Uncontrolled terms:  Coastal area  -  Dredger fill  -  Ecological construction  -  Salt leaching  -  Salt transport  -  Simulation experiments  -  Soil column  -  Study areas  -  Water heads

Classification code:  471.4 Seawater, Tides and Waves  -  483.1 Soils and Soil Mechanics  -  502.1 Mine and Quarry Operations  -  502.2 Mine and Quarry Equipment  -  943.3 Special Purpose Instruments  -  531.1 Metallurgy  -  802.3 Chemical Operations  -  821.0 Woodlands and Forestry  -  901.4 Impact of Technology on Society  -  533.1 Ore Treatment  -  471 Marine Science and Oceanography  -  452.4 Industrial Wastes Treatment and Disposal  -  405 Construction Equipment and Methods; Surveying  -  405.1 Construction Equipment  -  407 Maritime and Port Structures; Rivers and Other Waterways  -  407.3 Coastal Engineering  -  442.2 Land Reclamation  -  444 Water Resources  -  445.1 Water Treatment Techniques  -  452 Municipal and Industrial Wastes; Waste Treatment and Disposal

DOI:  10.3969/j.issn.1002-6819.2009.09.011

Database:  Compendex

19.   Accession number:  20094512438320

Title:  Anaerobic biodegradation and denitrification bio-augmentation of nicotine in tobacco sheet wastewater

Authors:  Hou, Yi1 ; Li, Youming1 ; Hu, Songqing2 

Author affiliation:  1  State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China

2  College of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, China

Corresponding author:  Hu, S. (fesqhu@scut.edu.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  264-268

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 biodegradation of paper-making tobacco sheet wastewater in anaerobic granular sludge UASB batch reactor was inspected and analyzed for the purpose to strengthen the anaerobic biodegradation of nicotine in wastewater, and the biodegradation curve of nicotine in anaerobic process was drawn out with the suggestion that biodegradation of nicotine might deal with the mechanism of synergistic biodegradation. Denitrification as a bio-augmentation technique was introduced into the domestication of anaerobic granular sludge. Nitrate was added into the wastewater to induce the metabolism activity of anaerobic denitrifying bacterium. The results showed that after domestication the concentration of nicotine and CODCr could be decreased from above 120 to 25 mg/L and from 600 to 200-300 mg/L separately in anaerobic granular sludge UASB batch reactor. Denitrification can increase the biodegradation of nicotine in paper-making tobacco sheet wastewater significantly.

Number of references:  15

Main heading:  Wastewater disposal

Controlled terms:  Bacteria  -  Batch reactors  -  Biochemical oxygen demand  -  Biochemistry  -  Biodegradation  -  Biological water treatment  -  Chromium  -  Degradation  -  Denitrification  -  Granular materials   -  Microbiology  -  Paper sheeting  -  Pyridine  -  Sludge disposal  -  Tobacco  -  Wastewater

Uncontrolled terms:  Anaerobic biodegradation  -  Anaerobic granular sludge  -  Anaerobic process  -  Bio-augmentation  -  Biodegradation curves  -  Concentration of  -  Denitrifying bacteria  -  Nicotine

Classification code:  951 Materials Science  -  543.1 Chromium and Alloys  -  801.2 Biochemistry  -  802.1 Chemical Plants and Equipment  -  802.2 Chemical Reactions  -  804.1 Organic Compounds  -  805.1.1 Biochemical Engineering  -  811.1.1 Papermaking Processes  -  821.4 Agricultural Products  -  461.9.2 Microbiology  -  445.1 Water Treatment Techniques  -  452.2 Sewage Treatment  -  452.3 Industrial Wastes  -  461.9 Biology  -  452.4 Industrial Wastes Treatment and Disposal  -  454.2 Environmental Impact and Protection  -  461.8 Biotechnology  -  453 Water Pollution

DOI:  10.3969/j.issn.1002-6819.2009.09.047

Database:  Compendex

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

20.   Accession number:  20094512438282

Title:  Effects of deficit irrigation with brackish water on soil water-salt distribution and winter wheat yield

Authors:  Wu, Zhongdong1 ; Wang, Quanjiu2, 3 

Author affiliation:  1  Institute of Resources and Environment Engineering, Shandong University of Technology, Zi'bo 255049, China

2  Institute of Water Resources and Hydro-Electric Engineering, Xi'an University of Technology, Xi'an 710048, China

3  State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Acad. of Sci., Yangling 712100, China

Corresponding author:  Wu, Z. (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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  36-42

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 the sake of improving water utilization efficiency and relieving the shortage of water resource in North China, field experiments on deficit irrigation with brackish water were carried out at Nanpi Ecological Experimental Station of Chinese Academy of Science in Hebei province from 2003 to 2005, which aimed at exploring the impact on soil salt content, winter wheat yield and yield constitute factors as well as water use efficiency caused by brackish water irrigation. The results showed that, soil salt content in winter wheat main root area had an increasing trend with growth duration development, salt accumulation in 0-100 cm soil layer increased gradually in company with water shortage stage postponement. Yield constitute factors most sensitive to water deficit in jointing period was the number grains per spike, water deficit in the tassel stage was the most influential factor to spikes per unit, water deficit in the grouting stage had critical negative effects to 1 000-grain weight. In general, with water shortage stage postponement, negative effect of water stress on winter wheat yield gradually decreased, and water use efficiency increased, the preferred order of deficit irrigation with brackish water was jointing stage irrigation, tassel stage irrigation and grouting stage irrigation. The study provides the scientific basis for determining suitable irrigation frequency and the normal amount of irrigation in winter wheat growth stage under condition of deficit irrigation with the brackish water in Huanghuaihai Plain, which is favorable for the rational exploitation and utilization of local brackish water resources.

Number of references:  21

Main heading:  Saline water

Controlled terms:  Biochemical oxygen demand  -  Concrete construction  -  Grain (agricultural product)  -  Groundwater  -  Grouting  -  Irrigation  -  Moisture determination  -  Mortar  -  Permittivity  -  Plants (botany)   -  Soil moisture  -  Underwater soils  -  Water content  -  Water resources  -  Water supply  -  Yield stress

Uncontrolled terms:  Brackish water  -  Chinese Academy of Sciences  -  Deficit irrigation  -  Effect of water  -  Experimental stations  -  Field experiment  -  Grain weights  -  Growth stages  -  Hebei Province  -  Influential factors   -  Irrigation frequency  -  North China  -  Per unit  -  Root area  -  Soil layer  -  Soil salt content  -  Soil water  -  Water deficits  -  Water shortages  -  Water use efficiency   -  Water utilization  -  Winter wheat  -  Winter wheat yield

Classification code:  951 Materials Science  -  453 Water Pollution  -  461.9 Biology  -  471.1 Oceanography, General  -  483.1 Soils and Soil Mechanics  -  502.1 Mine and Quarry Operations  -  701 Electricity and Magnetism  -  708.1 Dielectric Materials  -  821.3 Agricultural Methods  -  821.4 Agricultural Products  -  944.2 Moisture Measurements  -  452.4 Industrial Wastes Treatment and Disposal  -  405 Construction Equipment and Methods; Surveying  -  405.2 Construction Methods  -  412 Concrete  -  414.3 Mortar (Before , use code )  -  452.2 Sewage Treatment  -  421 Strength of Building Materials; Mechanical Properties  -  444 Water Resources  -  444.2 Groundwater  -  446.1 Water Supply Systems  -  422 Strength of Building Materials; Test Equipment and Methods

DOI:  10.3969/j.issn.1002-6819.2009.09.007

Database:  Compendex

21.   Accession number:  20094512438328

Title:  Effect of pressure fluctuation on vacuum cooling performance of cabbage

Authors:  Han, Zhi1 ; Xie, Jing1 ; Pan, Yingjie1 

Author affiliation:  1  College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China

Corresponding author:  Xie, J. (jxie@shou.edu.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  313-317

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:  Pressure fluctuations in different ranges were selected in the cabbage vacuum cooling processing to improve pre-cooling effect of fruits and vegetables with the compact structure, and the changes of temperature were analyzed, and the effect of pressure fluctuation on cooling performance was compared. It was found that it needed 17.95, 24.63 and 29.55 min when the surface temperature reached 2.50°C and the center temperature reached 8.50, 2.99 and 3.26°C respectively with pressure fluctuation in different ranges of [560, 660]Pa, [610, 710]Pa and [660, 760]Pa. The results show that the pressure fluctuation of [610, 710]Pa is the most effective pressure range during cabbage vacuum cooling. The change of temperature from the face to the center is non-linear and pressure fluctuation is an effective method to make the temperature even in the food during the vacuum cooling.

Number of references:  16

Main heading:  Pressure effects

Controlled terms:  Cooling  -  Temperature distribution  -  Thermoanalysis  -  Vacuum  -  Vacuum applications  -  Vacuum technology

Uncontrolled terms:  Cabbage  -  Compact structures  -  Cooling performance  -  Effect of pressure  -  Effective pressure  -  Non-linear  -  Pre-cooling  -  Pressure fluctuation  -  Surface temperatures  -  Vacuum cooling

Classification code:  931.1 Mechanics  -  802.3 Chemical Operations  -  801 Chemistry  -  641.2 Heat Transfer  -  641.1 Thermodynamics  -  633.1 Vacuum Applications  -  633 Vacuum Technology

DOI:  10.3969/j.issn.1002-6819.2009.09.055

Database:  Compendex

22.   Accession number:  20094512438329

Title:  Simulation of heat and mass transfer in fractal porous media during freeze drying of biological materials

Authors:  Peng, Runling1, 2 ; Liu, Changyong1 ; Xu, Chenghai3 ; Li, Chenghua1 ; Li, Quanshun3 

Author affiliation:  1  College of Mechanical Engineering, Shenyang Ligong University, Shenyang 110168, China

2  College of Engineering, Shenyang Agricultural University, Shenyang 110161, China

3  School of Mechanical Engineering and Automatization, Northeastern University, Shenyang 110004, China

Corresponding author:  Peng, R. (pengrunling@163.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  318-322

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 mathematical model of freeze-drying process was developed for the biological materials. The model described here took into account the fractal feature of the dried layer. The continuity equations for the water vapor and the inert gas in the dried layer used the diffusivity equation of the fractal porous medium, and the Knudsen diffusivity decreased exponentially with the dried layer thickness. The model was capable of predicting the influence of the fractal feature of the dried layer on the motion of the sublimation interface and the drying time of the freeze-drying process of biological materials. The model could also predict the temperature profile and the concentration of bound water profile in biological materials during the freeze-drying process. The freeze-drying process of spirulina in glass vial was simulated using fractal model by software Matlab and Fluent. The simulation results agree with the experimental data.

Number of references:  15

Main heading:  Curing

Controlled terms:  Biological materials  -  Dewatering  -  Equations of motion  -  Fractals  -  Freezing  -  Inert gases  -  Low temperature drying  -  Mass transfer  -  Mathematical models  -  MATLAB   -  Porous materials  -  Simulators  -  Water vapor

Uncontrolled terms:  Bound waters  -  Concentration of  -  Continuity equations  -  Diffusivity equation  -  Drying time  -  Experimental data  -  Fractal feature  -  Fractal model  -  Fractal porous media  -  Fractal porous medium   -  Freeze drying  -  Freeze-drying process  -  Heat and mass transfer  -  Heat transfer/mass transfer  -  Knudsen diffusivity  -  Layer thickness  -  Simulation result  -  Software MATLAB  -  Spirulina  -  Spirulina platensis   -  Temperature profiles

Classification code:  802.2 Chemical Reactions  -  802.3 Chemical Operations  -  804.2 Inorganic Compounds  -  815.1 Polymeric Materials  -  818.3 Rubber and Elastomer Processing  -  801.4 Physical Chemistry  -  822.2 Food Processing Operations  -  921.2 Calculus  -  931.1 Mechanics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  951 Materials Science  -  921 Mathematics  -  723.5 Computer Applications  -  461.2 Biological Materials and Tissue Engineering  -  621 Nuclear Reactors  -  641 Heat and Mass Transfer; Thermodynamics  -  641.3 Mass Transfer  -  644.1 Refrigeration Methods  -  443.1 Atmospheric Properties  -  654.1 Rockets and Missiles  -  657.1 Solar Energy and Phenomena  -  662.1 Automobiles  -  671 Naval Architecture  -  723.1.1 Computer Programming Languages  -  655.2 Satellites

DOI:  10.3969/j.issn.1002-6819.2009.09.056

Database:  Compendex

23.   Accession number:  20094512438313

Title:  Thinking about bio-energy utilization in China

Authors:  Zhang, Bailiang1 ; Wang, Jiqing1 ; Xu, Guizhuan1 ; Yang, Shiguan1 ; Song, Andong1 ; Wang, Xutao1 

Author affiliation:  1  Key Laboratory of Renewable Energy Ministry of Agriculture, Henan Agricultural University, Zhengzhou 450002, China

Corresponding author:  Zhang, B. (hauzblo@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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  226-231

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:  There are many argument about the energy questions in china with the situation of international energy price rise and fall, these absolutely oppositional standpoints about how to use the bio-energy had influenced the confidence and the direction of government and enterprise to bio-energy scientific research and investment, the argument were very acute at intelligentsia, there many blindness investment had be done. The writer's standpoints about the quantity limit and time limit of bio-energy resource, and the stage of bio-energy scientific research and its economic effect were be expounded on the basis of unifying the general bio-energy concept and the calculation method. The general perspective and thinking about the bio-energy utilization were be presented which had an important reference value to push the bio-energy development by unify the viewpoint and overall arrangement in China.

Number of references:  17

Main heading:  Investments

Controlled terms:  Biomass  -  Energy resources  -  Energy utilization

Uncontrolled terms:  Bio-energy  -  Bio-energy concept  -  Bio-energy quantities  -  Bio-energy utilization  -  Calculation methods  -  Economic effect  -  Energy prices  -  Reference values  -  Scientific researches

Classification code:  525.1 Energy Resources and Renewable Energy Issues  -  525.3 Energy Utilization  -  805.1.1 Biochemical Engineering  -  821.5 Agricultural Wastes  -  911.2 Industrial Economics

DOI:  10.3969/j.issn.1002-6819.2009.09.040

Database:  Compendex

24.   Accession number:  20094512438300

Title:  Construction and implementation of model-based visual rice growth system

Authors:  Liu, Hui1 ; Tang, Liang1 ; Zhang, Wenyu1 ; Wu, Yanlian1 ; Cao, Weixing1 ; Zhu, Yan1 

Author affiliation:  1  Jiangsu Key Laboratory for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, China

Corresponding author:  Zhu, Y. (yanzhu@njau.edu.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  148-154

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:  Driven by weather, soil, variety and cultivation techniques databases and integrating process-based growth simulation model, morphogenesis model, visualization model, strategy analysis and estimate model, weather data generation model and variety parameter debug model, a model-based visual growth system in rice (MVGSR) was developed using component-based software and visualization technology. The system was programmed in the .NET framework with the C# language, and the OpenGL library was used for realizing 2D and 3D graphics application and visualization. The implemented system could be used for predicting growth progress and visualizing morphological architecture of rice plant under various environments, genotypes and management strategies, and had the functions as data management, growth simulation, strategy evaluation, real-time prediction, temporal and spatial analysis and system help. The MVGSR should be useful for improving the levels of digitalization and visualization of crop growth and production system and lay a foundation for development of visual agriculture.

Number of references:  28

Main heading:  Three dimensional computer graphics

Controlled terms:  Computer software  -  Cultivation  -  Data visualization  -  Geologic models  -  Morphology  -  Program debugging  -  Simulators  -  Three dimensional  -  Visualization

Uncontrolled terms:  3D graphics  -  Component based software  -  Crop growth  -  Data management  -  Debug models  -  Display model  -  Estimate model  -  Growth  -  Growth progress  -  Growth simulation   -  Growth systems  -  Integrating process  -  Management strategies  -  Model-based  -  Morphogenesis model  -  NET framework  -  Production system  -  Real-time prediction  -  Rice  -  Rice plants   -  Spatial analysis  -  Visualization models  -  Visualization technologies  -  Weather data

Classification code:  723.1 Computer Programming  -  723.2 Data Processing and Image Processing  -  723.5 Computer Applications  -  951 Materials Science  -  821.3 Agricultural Methods  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  931.2 Physical Properties of Gases, Liquids and Solids  -  902.1 Engineering Graphics  -  723 Computer Software, Data Handling and Applications  -  671 Naval Architecture  -  481.1 Geology  -  621 Nuclear Reactors  -  654.1 Rockets and Missiles  -  655.2 Satellites  -  657.1 Solar Energy and Phenomena  -  662.1 Automobiles

DOI:  10.3969/j.issn.1002-6819.2009.09.027

Database:  Compendex

25.   Accession number:  20094512438294

Title:  Design and experiment on the driving disc of anti-blocking unit for no-tillage planter

Authors:  Zhang, Xirui1 ; He, Jin1 ; Li, Hongwen1 ; Li, Wenying1 ; Li, Hui1 

Author affiliation:  1  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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  117-121

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:  According to the problem of straw blocking of no-tillage winter wheat planting in corn residue and weed-covered fields in annual double cropping areas of China, this paper put forward an anti-blocking method that the combined opener was adopted embedded with driving disc, and the driving disc anti-blocking unit was designed for no-tillage wheat planter. Furthermore, the key parameters were analyzed and determined. The field experiment showed that the driving disc unit was effective in solving straw blocking and ensuring the passing ability of no-tillage wheat planter. Compared with strip-chopping wheat no-tillage planter, the driving disc no-tillage wheat planter improved the stubble-cutting rate by 11.2% and decreased soil disturbance by 58.8%. Compared with the fields planted by strip-chopping and traditional planters, the fields planted by driving disc no-tillage wheat planter have the highest soil moisture in 0-20 cm depth and the greatest number of tiller and secondary root, indicating this new planter can meet the requirements of agronomy in two-crop a year regions effectively.

Number of references:  16

Main heading:  Agricultural machinery

Controlled terms:  Agronomy  -  Experiments  -  Groundwater  -  Soil moisture

Uncontrolled terms:  Blocking method  -  Corn residues  -  Cutting rate  -  Double cropping  -  Field experiment  -  Key parameters  -  No tillage  -  No-tillage planter  -  Passing ability  -  Soil disturbances   -  Winter wheat

Classification code:  444.2 Groundwater  -  483.1 Soils and Soil Mechanics  -  821.1 Agricultural Machinery and Equipment  -  821.3 Agricultural Methods  -  901.3 Engineering Research

DOI:  10.3969/j.issn.1002-6819.2009.09.021

Database:  Compendex

26.   Accession number:  20094512438297

Title:  Model of moisture content of paddy rice leaf based on canopy spectral reflectance

Authors:  Sun, Jun1, 2 ; Mao, Hanping1 ; Yang, Yiqing1 ; Zhang, Xiaodong1 

Author affiliation:  1  Key Lab. of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China

2  School of Electrical and Information Engineering of Jiangsu University, Zhenjiang 212013, China

Corresponding author:  Sun, J. (sun2000jun@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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  133-136

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:  Based on the relationship between paddy rice canopy spectral reflectance and the leaf moisture content, a model of the leaf moisture content was built. Both the canopy spectral reflectance and the moisture content of leaf in booting stage were measured. According to the correlation coefficient of the paddy rice leaf moisture content and the spectral reflectance, the characteristic wave bands which had the higher correlation coefficient were selected. The genetic algorithm was used to optimize BP neural network's initial weights. The prediction models were built using BP neural network, the GA-BP-Network and the traditional multiple linear regression method. The test results showed that the average error rate of the predicted moisture content value and the real value was 3.9% with GA-BP-Network model and the largest error rate was 6.1%. The prediction capability of the GA-BP-Network is better than that of BP neural network and the multiple linear regression, and the model can improve the accuracy of the moisture content prediction.

Number of references:  13

Main heading:  Linear regression

Controlled terms:  Backpropagation algorithms  -  Genetic algorithms  -  Interferometry  -  Mathematical models  -  Moisture  -  Moisture determination  -  Neural networks  -  Reflection  -  Spectrum analysis  -  Spectrum analyzers

Uncontrolled terms:  Average errors  -  BP neural networks  -  Canopy spectral reflectance  -  Correlation coefficient  -  Error rate  -  Initial weights  -  Leaf moisture  -  Moisture content values  -  Moisture contents  -  Multiple linear regression analysis   -  Multiple linear regression method  -  Multiple linear regressions  -  Network models  -  Paddy rice  -  Prediction capability  -  Prediction model  -  Real values  -  Spectral reflectances  -  Test results  -  Wavebands

Classification code:  922.2 Mathematical Statistics  -  941 Acoustical and Optical Measuring Instruments  -  941.4 Optical Variables Measurements  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  944.2 Moisture Measurements  -  921 Mathematics  -  443.1 Atmospheric Properties  -  461.1 Biomedical Engineering  -  711 Electromagnetic Waves  -  723 Computer Software, Data Handling and Applications  -  723.4 Artificial Intelligence  -  741.1 Light/Optics  -  801.4 Physical Chemistry

DOI:  10.3969/j.issn.1002-6819.2009.09.024

Database:  Compendex

27.   Accession number:  20094512438304

Title:  Technology of near infrared spectroscopy analysis system design based on fixed grating and charge-coupled device

Authors:  Zhang, Yinqiao1 ; Zhao, Bo1 ; Wang, Hui1 ; Mao, Wenhua1 ; Zhang, Xiaochao1 

Author affiliation:  1  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China

Corresponding author:  Zhang, Y. (zhangyinqiao@126.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  176-181

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:  Near infrared(NIR) spectroscopy analysis system was designed based on a fixed grating and a linear array charge-coupled device (CCD). The main content includes CCD drive circuit, spectrum signal acquisition circuit, fixed grating optical system, light source control system, CCD temperature control system and sample turntable control system. It was verified that the NIR spectral analysis method was feasible in testing the quality of grain by using the MPA Fourier spectrometer such as moisture and protein components of wheat. A variety of pretreatment methods were used to optimize the spectral data, and the optimal treatment means was the first derivative with multiplicative scatter correction. The CA-06 instrument performance and accuracy were verified, and wheat moisture and protein models were established.

Number of references:  15

Main heading:  Infrared spectroscopy

Controlled terms:  Agricultural products  -  Control systems  -  Digital cameras  -  Infrared devices  -  Light  -  Light sources  -  Moisture  -  Near infrared spectroscopy  -  Optical systems  -  Pile foundations   -  Signal processing  -  Spectrometers  -  Spectroscopic analysis  -  Spectrum analysis  -  Spectrum analyzers  -  Temperature control

Uncontrolled terms:  Analysis system  -  CCD temperature control  -  Drive circuits  -  First derivative  -  Fourier spectrometer  -  Instrument performance  -  Light system  -  Linear arrays  -  Multiplicative scatter correction  -  NIR spectral analysis   -  Optimal treatment  -  Pretreatment methods  -  Protein components  -  Protein models  -  Quality detection  -  Spectral data  -  Spectrum signals

Classification code:  801.4 Physical Chemistry  -  821.4 Agricultural Products  -  921 Mathematics  -  922.2 Mathematical Statistics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  931.3 Atomic and Molecular Physics  -  941.3 Optical Instruments  -  941.4 Optical Variables Measurements  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  801 Chemistry  -  744 Lasers  -  443.1 Atmospheric Properties  -  483.2 Foundations  -  707.2 Electric Lamps  -  714.2 Semiconductor Devices and Integrated Circuits  -  716.1 Information Theory and Signal Processing  -  731.1 Control Systems  -  731.3 Specific Variables Control  -  741.1 Light/Optics  -  741.3 Optical Devices and Systems  -  742.2 Photographic Equipment

DOI:  10.3969/j.issn.1002-6819.2009.09.031

Database:  Compendex

28.   Accession number:  20094512438276

Title:  Control system of urban green land precision irrigation based on GPRS/SMS and μC/OS embedded technology

Authors:  Zhang, Junfu1 ; Chen, Junqi2 ; Hu, Jianfei2 ; Zhao, Yandong1 

Author affiliation:  1  School of Science and Technology, Beijing Forestry University, Beijing 100083, China

2  Beijing Parks and Forestry International Cooperation, Beijing 100029, China

Corresponding author:  Zhao, Y. (zhangjunfu269@163.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 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:  In order to save water used for irrigation on urban green land, authors designed a control system of urban green land precision irrigation which was based on ATmega128 MCU, the embedded operating system, global system for mobile communications (GSM) and general packet radio service (GPRS). The system can detect soil moisture real-timely with the characteristics of network and intelligence of the system integrated functions such as historical data query, demonstrations of soil and irrigation information chart, generating different irrigation strategies according to the conditions of topography and vegetation. This system used the technology of switching SMS and GPRS automatically and adopted the embedded real-time operating system μC/OS, which further improved the reliability of the system. Precision irrigation can be realized by the detection of threshold of soil moisture and the plant physiological water requirement. Results in field show that the system has high reliability of data transmission and significant effects of water saving.

Number of references:  12

Main heading:  Embedded systems

Controlled terms:  Cellular telephone systems  -  Computer operating systems  -  Global system for mobile communications  -  Groundwater  -  Irrigation  -  Moisture determination  -  Permittivity  -  Soil moisture  -  Water conservation  -  Wireless networks   -  Wireless telecommunication systems

Uncontrolled terms:  Data transmission  -  Embedded operating systems  -  Embedded real time operating system  -  Embedded technology  -  General packet radio services  -  Green land  -  High reliability  -  Historical data  -  In-field  -  Integrated function   -  Precision irrigation  -  Water requirements  -  Water saving

Classification code:  718.1 Telephone Systems and Equipment  -  722 Computer Systems and Equipment  -  722.3 Data Communication, Equipment and Techniques  -  718 Telephone Systems and Related Technologies; Line Communications  -  722.4 Digital Computers and Systems  -  821.3 Agricultural Methods  -  944.2 Moisture Measurements  -  723 Computer Software, Data Handling and Applications  -  717 Optical Communication  -  444 Water Resources  -  444.2 Groundwater  -  483.1 Soils and Soil Mechanics  -  403.1 Urban Planning and Development  -  701 Electricity and Magnetism  -  716 Telecommunication; Radar, Radio and Television  -  716.3 Radio Systems and Equipment  -  708.1 Dielectric Materials

DOI:  10.3969/j.issn.1002-6819.2009.09.001

Database:  Compendex

29.   Accession number:  20094512438330

Title:  Comparison between combined radio frequency and hot air treatment and hot air treatment on bread fresh-keeping

Authors:  Liu, Yanhong1 ; Tang, Juming2 ; Mao, Zhihuai1 ; Jae-Hyung, Mah2 ; Wang, Shaojin2 

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

2  Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164-6120, United States

Corresponding author:  Liu, Y. (liuyanhong@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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  323-328

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 objective of the research was to apply radio frequency (RF) technology on the preservation of packaged bread to extend bread storage life. The effect of combined RF and hot air treatment on the extension of bread storage life was studied to compare with that of conventional hot air treatment from the respects of lethal effect, heating rate and quality changes of treated bread. Much lower mean product temperature and shorter holding time were used for complete control of Penicillium citrinum spores with combined RF and hot air treatment compared with conventional heating. Combined RF and hot air treatment provided a heating rate of 30 times that of conventional hot air treatment for in-package bread to lethal temperatures, and showed advantages in maintaining treated bread quality except for the larger shrinkage.

Number of references:  28

Main heading:  Food storage

Controlled terms:  Food products  -  Heating rate  -  Hot air heating  -  Radio  -  Radio waves

Uncontrolled terms:  Bread  -  Bread quality  -  Combined RF and hot air treatment  -  Complete control  -  Conventional heating  -  Holding time  -  Hot air treatment  -  Lethal effects  -  Lethal temperature  -  Penicillium citrinum   -  Quality change  -  Radio frequencies  -  Storage  -  Storage life

Classification code:  822.3 Food Products  -  822.1 Food Products Plants and Equipment  -  716.3 Radio Systems and Equipment  -  711 Electromagnetic Waves  -  694.4 Storage  -  643.1 Space Heating  -  641.2 Heat Transfer

DOI:  10.3969/j.issn.1002-6819.2009.09.057

Database:  Compendex

30.   Accession number:  20094512438298

Title:  Estimation of crop yield based on weight optimization combination and multi-temporal remote sensing data

Authors:  Xu, Xingang1, 2 ; Wang, Jihua1, 2 ; Huang, Wenjiang1, 2 ; Li, Cunjun1, 2 ; Yang, Xiaodong1, 2 ; Gu, Xiaohe1, 2 

Author affiliation:  1  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China

2  Key Laboratory for Information Technologies in Agriculture, Ministry of Agriculture, Beijing 100097, China

Corresponding author:  Xu, X. (xxg_xin_gang@126.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  137-142

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-temporal remote sensing data can cover more information related with yield than that of single-temporal, so it is of great significance to explore how to integrate the useful information from multi-temporal remote sensing data for improving the precision of estimating yield. WOC (weight optimization combination) is the algorithm which optimizes the weights of many models to form the combined model with higher precision. Taking the estimation of barley yield as an example in friendship farm, Heilongjiang Province, firstly four different temporal Landsat5 TM images were used to construct the single-temporal estimating models of barley yield, then applying the iteration algorithm of WOC to calculate the weights of the four models formed the new combined model, which was employed to estimate the barley yield finally. The results showed that the combined model based on WOC and multi-temporal remote images displayed better performance, and it was R2 (determinant coefficient) was remarkably improved in comparison with those of the single-temporal models. In addition, analyzing the weight values in the combined model showed that the size of weight of each single model was sensitive to the amount of yield information involved by the corresponding temporal satellite image, and that was of great importance for determining the key temporal satellite images to estimate crop yield.

 Number of references:  10

Main heading:  Estimation

Controlled terms:  Algorithms  -  Crops  -  Optimization  -  Remote sensing  -  Weighing

Uncontrolled terms:  Combined model  -  Crop yield  -  Crop yield estimation  -  Iteration algorithms  -  Landsat-5  -  Multi-temporal  -  Multi-temporal remote sensing  -  Satellite images  -  Temporal models  -  TM image   -  Weight optimization  -  Weight optimization combination  -  Weight values

Classification code:  723 Computer Software, Data Handling and Applications  -  731.1 Control Systems  -  821.4 Agricultural Products  -  921 Mathematics  -  921.5 Optimization Techniques  -  943.3 Special Purpose Instruments

DOI:  10.3969/j.issn.1002-6819.2009.09.025

Database:  Compendex

31.   Accession number:  20094512438315

Title:  Optimization of technology for hydrogen production by anaerobic fermentation of swine mauures

Authors:  Wang, Yuanyuan1 ; Zhang, Yanlin1 

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

Corresponding author:  Zhang, Y. (zhangyl@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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  237-242

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 set up the mathematical model between fermentation process parameters and hydrogen production, obtain optimized parameters and higher hydrogen production, a hydrogen-producing technique using anaerobic fermentation method was researched on the basis of one-factor tests and the quadratic orthogonal regressive rotational combination design principle, and the method of response surface analysis with three factors and three levels was adopted. A quadratic equation for hydrogen yield was built. Response surface and contour were graphed with the hydrogen yield as the response value. Based on the analysis of the response surface plots and their corresponding contour plots, effects of pH value, hydraulic retention time and substrate concentration and their alternant effects were explored. By using the new method, the optimum hydrogen-producing conditions were obtained as follows: initial pH value of 5.98, hydraulic retention time of 4.123 d, substrate concentration of 51.98 g/L. Under the optimized conditions, the hydrogen production rate in the latter validatory experiment was 32.4 mL/g.

Number of references:  24

Main heading:  Hydrogen production

Controlled terms:  Anaerobic digestion  -  Fermentation  -  Fertilizers  -  Gas producers  -  Manures  -  Mathematical models  -  Optimization  -  pH effects  -  Substrates  -  Surface analysis   -  Surface properties

Uncontrolled terms:  Anaerobic fermentation  -  Bio-hydrogen  -  Combination design  -  Contour plot  -  Fermentation process  -  Hydraulic retention time  -  Hydrogen production rate  -  Hydrogen yields  -  Initial pH value  -  One-factor   -  Optimized conditions  -  Optimized parameter  -  pH value  -  Quadratic equations  -  Response surface  -  Response surface analysis  -  Response surface plot  -  Substrate concentrations  -  Swine manures

Classification code:  951 Materials Science  -  801.2 Biochemistry  -  802.2 Chemical Reactions  -  804 Chemical Products Generally  -  805.1.1 Biochemical Engineering  -  813.1 Coating Techniques  -  821.2 Agricultural Chemicals  -  821.5 Agricultural Wastes  -  921 Mathematics  -  921.5 Optimization Techniques  -  931.2 Physical Properties of Gases, Liquids and Solids  -  801.1 Chemistry, General  -  423 Non Mechanical Properties and Tests of Building Materials  -  452.3 Industrial Wastes  -  452.4 Industrial Wastes Treatment and Disposal  -  461 Bioengineering and Biology  -  801 Chemistry  -  461.8 Biotechnology  -  522 Gas Fuels  -  712.1 Semiconducting Materials  -  714.2 Semiconductor Devices and Integrated Circuits  -  461.9 Biology

DOI:  10.3969/j.issn.1002-6819.2009.09.042

Database:  Compendex

32.   Accession number:  20094512438308

Title:  Design of monitoring system for grain depot based on ZigBee technology

Authors:  Bao, Changchun1 ; Li, Zhihong1 ; Zhang, Lishan1 ; Li, Guofang1 ; Lun, Cuifen1 ; Li, Yanping1 ; Lin, Zhipeng1 

Author affiliation:  1  Department of Mechanical and Electronics, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China

Corresponding author:  Bao, C. (baochangchun@163.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  197-201

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:  As the environmental parameters monitoring points for large scale grain depot facilities were scattered, a wireless sensor network central monitoring system was designed with the structure of hierarchical network topology. CC2430 chip with ZigBee technology was considered as the core of information processing and wireless nodes detection. The terminal child-nodes of the wireless sensor network was established with temperature and humidity sensors. The system implemented real-time circumstances monitoring at the scene, and transferred data by routing nodes. The routing nodes module corresponded with central node in wireless or RS-485 manner; as a result the detecting information at the scene was transferred to central monitoring computer in real time. The system fulfilled multi-point and real-time detecting inside the grain depot. Results show that the system has the characteristics of good expansibility, networking flexibility and low cost. The design lays a foundation for modern management of large scale grain depot facilities.

Number of references:  19

Main heading:  Wireless sensor networks

Controlled terms:  Data processing  -  Electric network topology  -  Monitoring  -  Sensor networks  -  Technology  -  Wireless telecommunication systems

Uncontrolled terms:  Central monitoring system  -  Environmental parameter  -  Grain depot  -  Hierarchical network  -  Information processing  -  Low costs  -  Modern management  -  Monitoring points  -  Monitoring system  -  Real time   -  Routing node  -  Single-chip computers  -  Temperature and humidity sensor  -  Wireless nodes  -  ZigBee technology

Classification code:  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  731.1 Control Systems  -  732 Control Devices  -  901 Engineering Profession  -  941 Acoustical and Optical Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  723.2 Data Processing and Image Processing  -  722.3 Data Communication, Equipment and Techniques  -  717 Optical Communication  -  716.3 Radio Systems and Equipment  -  716 Telecommunication; Radar, Radio and Television  -  703.1 Electric Networks  -  722.4 Digital Computers and Systems

DOI:  10.3969/j.issn.1002-6819.2009.09.035

Database:  Compendex

33.   Accession number:  20094512438279

Title:  Variation of nitrogen concentration in drainage water from paddy fields under controlled irrigation and drainage

Authors:  Peng, Shizhang1 ; Zhang, Zhengliang1, 2 ; Luo, Yufeng1 ; Jiao, Xiyun1 ; Sun, Yong3 

Author affiliation:  1  State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China

2  College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China

3  Administrative Office of Gaoyou Irrigation District, Gaoyou 225600, China

Corresponding author:  Peng, S. (szpeng@hhu.edu.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  21-26

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 ditch-pond wetland system into account, with two treatments, namely controlled irrigation drainage and conventional shallow-wetting irrigation with no drainage regulation, nitrogen concentrations in drainage water from paddy fields were monitored and the variations of nitrogen concentrations were investigated. The results showed that comparing with conventional shallow-wetting irrigation during the whole growth period of rice, total nitrogen (TN), NO3--N, NH4+-N concentrations under controlled irrigation were reduced by 12.08%, 20.33% and 13.51%, respectively; comparing with conventional drainage, TN, NH4+-N and NO3--N concentrations under controlled drainage was reduced by 2.21%, 7.08% and 20.92%, respectively. TN, NH4+-N and NO3--N concentrations from inlet to outlet of the wetland were lowered by 16.8%, 14.4% and 50.9%, respectively. TN, NH4+-N, NO3--N concentrations in the wetland attenuated exponentially with time. Overall, the measures of controlled irrigation, controlled drainage and the ditch-pond wetland system are effective in removing nitrogen in drainage water from paddy fields.

Number of references:  13

Main heading:  Irrigation

Controlled terms:  Concentration (process)  -  Lakes  -  Nitrogen  -  Wastewater disposal  -  Wetlands  -  Wetting

Uncontrolled terms:  Controlled drainage  -  Ditch-pond wetland system  -  Drainage water  -  Growth period  -  Nitrogen concentrations  -  Paddy field  -  Paddy fields  -  Total nitrogen  -  Wetland systems

Classification code:  931.2 Physical Properties of Gases, Liquids and Solids  -  821.3 Agricultural Methods  -  804 Chemical Products Generally  -  802.3 Chemical Operations  -  483.1 Soils and Soil Mechanics  -  481.1 Geology  -  454.2 Environmental Impact and Protection  -  452.4 Industrial Wastes Treatment and Disposal  -  444.1 Surface Water  -  442.2 Land Reclamation  -  407 Maritime and Port Structures; Rivers and Other Waterways

DOI:  10.3969/j.issn.1002-6819.2009.09.004

Database:  Compendex

34.   Accession number:  20094512438307

Title:  Implementation of improved DV-Hop localization algorithm for animal survey

Authors:  Lin, Huiqiang1 ; Zhou, Peijiao2 ; Liu, Caixing1 ; Xu, Dongfeng1 

Author affiliation:  1  College of Informatics, South China Agricultural University, Guangzhou 510640, China

2  Servicing Department of Pasturage, Guangzhou 511458, China

Corresponding author:  Xu, D. (xdf123@scau.edu.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 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 avoid the whole wireless sensor networks (WSN) dead because of the high price of the measure precision, time-synchronization, hardware and power, so as to improve the precision of localization, an improved DV-Hop localization algorithm, which is simpler and better for the typical localization algorithm, is proposed based on the reality environment of breeding field. And its capability of localization error was evaluated by simulate and experiment. The results show that, the localization error of the improved algorithm is 3.17% less than that of the formerly algorithm, can measure the track of the moving sensor nodes as animals, and its average error is 0.33 m between reality position and the tested position. The improved algorithm is not only without any assistance of hardware such as GPS, but also cuts down the price of calculation, economizes the energy of sensor nodes, improves the precision of localization, applies available in the reality environment.

Number of references:  15

Main heading:  Wireless sensor networks

Controlled terms:  Animals  -  Evolutionary algorithms  -  Sensor networks  -  Sensor nodes  -  Surveys  -  Telecommunication equipment  -  Wireless telecommunication systems

Uncontrolled terms:  Average errors  -  DV-Hop  -  High price  -  Improved algorithm  -  Localization algorithm  -  Localization errors  -  Measure precision  -  Moving sensors

Classification code:  921 Mathematics  -  722.4 Digital Computers and Systems  -  723 Computer Software, Data Handling and Applications  -  731.1 Control Systems  -  732 Control Devices  -  814 Leather and Tanning  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  822 Food Technology  -  903.1 Information Sources and Analysis  -  722.3 Data Communication, Equipment and Techniques  -  405.3 Surveying  -  461 Bioengineering and Biology  -  471 Marine Science and Oceanography  -  722 Computer Systems and Equipment  -  716 Telecommunication; Radar, Radio and Television  -  717 Optical Communication  -  718 Telephone Systems and Related Technologies; Line Communications  -  716.3 Radio Systems and Equipment

DOI:  10.3969/j.issn.1002-6819.2009.09.034

Database:  Compendex

35.   Accession number:  20094512438301

Title:  Monitoring spatial variance of winter wheat growth and grain quality under variable-rate fertilization conditions by remote sensing data

Authors:  Song, Xiaoyu1, 2 ; Wang, Jihua1, 3 ; Huang, Wenjiang1 ; Yan, Guangjian2 ; Chang, Hong3 

Author affiliation:  1  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China

2  College of Geography/Research Center for Remote Sensing and GIS, Beijing Normal University, Beijing 100875, China

3  Beijing Research Center for Agrifood Testing and Farmland Monitoring, Beijing 100097, China

Corresponding author:  Song, X. (songxy@nercita.org.cn) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  155-162

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:  Remote sensing images acquired by satellite-based sensors have the potential for monitoring crop growth variation because they can provide an area global view for entire field within the crop growth season with scathelessness. This study aimed to use Quickbird image to evaluate the spatial variabilities of winter wheat growth and grain quality under different fertilization levels. The variable-rate fertilization experiment was carried out on National Experimental Station for Precision Agriculture during 2005-2006 the wheat growing season. The results indicated that the spectrum parameters of Quickbird image could reflect the spatial variabilities of winter wheat growth in different fertilization study areas. Meanwhile the spatial variabilities of wheat growth at early stage could reflect the variance of yield and grain quality. The wheat growth information at the booting stage had strong positive correlations with yield, and strong negative correlations with grain protein and wet gluten. The correlation coefficient between OSAVI (optimized soil adjusted vegetation index) and wheat yield was 0.536. It was -0.531 for GNDVI (greenness-normalized difference vegetation index) and grain protein content, and -0.535 for GNDVI and wet gluten, respectively. The study also indicated that diverse spectrum parameters had different sensitivities to the wheat growth spatial variance. So it is feasible to use remote sensing data to investigate the crop growth and quality spatial variance.

Number of references:  29

Main heading:  Grain (agricultural product)

Controlled terms:  Crops  -  Forestry  -  Grain growth  -  Image reconstruction  -  Remote sensing  -  Vegetation

Uncontrolled terms:  Correlation coefficient  -  Crop growth  -  Experimental stations  -  Fertilization experiment  -  Global view  -  Grain protein contents  -  Grain quality  -  Growing season  -  Growth  -  Growth information   -  Negative correlation  -  Normalized difference vegetation index  -  Positive correlations  -  Precision Agriculture  -  Quickbird imagery  -  QuickBird images  -  Remote sensing data  -  Remote sensing images  -  Satellite-based sensors  -  Spatial variability   -  Spatial variance  -  Spectrum parameters  -  Study areas  -  Variable rate  -  Vegetation index  -  Wheat yield  -  Winter wheat

Classification code:  933.1.2 Crystal Growth  -  821.4 Agricultural Products  -  821.0 Woodlands and Forestry  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  802.3 Chemical Operations  -  741 Light, Optics and Optical Devices  -  731.1 Control Systems  -  723.2 Data Processing and Image Processing  -  531.2 Metallography  -  525.1 Energy Resources and Renewable Energy Issues  -  461.9 Biology

DOI:  10.3969/j.issn.1002-6819.2009.09.028

Database:  Compendex

36.   Accession number:  20094512438316

Title:  Effects of inoculants on enzymes activities of pig manure during high temperature composting

Authors:  Liang, Dongli1 ; Gu, Jie1 ; Qin, Qingjun1 ; Gao, Hua1 ; Li, Shengxiu1 

Author affiliation:  1  College of Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China

Corresponding author:  Gu, J. (gujoyer@sina.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  243-248

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:  An experiment was carried out with mixed materials of pig manure and wheat straw either with or without inoculants with microorganism agent (two treatments, one with agent, the other was CK) to study changes of various enzyme activities (including cellulase, sucrase, urease, dehydrogenase, catalase, polyphenol oxidase) during high- temperature composting process in a static state. The relationships of enzyme activity and E4/E6, enzyme activity and electrical conductivity (EC) were investigated. Results showed that the composting temperature was increased, and high temperature decay period was prolonged by adding microorganisms. All tested enzyme activities were bigger in the treatment with microorganism agent than those in CK treatment, and changes of enzyme activities were different with enzyme types and composting period. Cellulase and sucrase of composting had higher activities at the high temperature stage while decreased rapidly at the low temperature stage. Activities of urease and polyphenol oxidase reached peak values with temperature declining at later composting stage. And maximum activities of dehydrogenase appeared at the middle stage of composting period. However, catalase activities dropped down gradually during the whole composting period. There was a significant positive correlation between the enzymes including cellulase and dehydrogenase activities and EC values, while there was a positive correlation between the catalase activity and E4/E6 for both treatments. Enzyme activities during composting can be used to evaluate mineralization and humification processes.

Number of references:  29

Main heading:  Enzyme activity

Controlled terms:  Catalysts  -  Electric conductivity  -  Electric conductivity measurement  -  Enzymes  -  Fertilizers  -  Manures

Uncontrolled terms:  Catalase activity  -  Composting process  -  Composting temperature  -  Dehydrogenase activity  -  Electrical conductivity  -  Enzymes activity  -  High temperature  -  Humification process  -  Inoculant  -  Low temperatures   -  Mixed materials  -  Peak values  -  Pig manures  -  Polyphenol oxidase  -  Positive correlations  -  Static state  -  Wheat straws

Classification code:  942.2 Electric Variables Measurements  -  821.5 Agricultural Wastes  -  821.2 Agricultural Chemicals  -  804.1 Organic Compounds  -  804 Chemical Products Generally  -  803 Chemical Agents and Basic Industrial Chemicals  -  801.2 Biochemistry  -  701.1 Electricity: Basic Concepts and Phenomena  -  461.9 Biology  -  461.2 Biological Materials and Tissue Engineering  -  452.3 Industrial Wastes

DOI:  10.3969/j.issn.1002-6819.2009.09.043

Database:  Compendex

37.   Accession number:  20094512438318

Title:  Immobilization conditions of alkaline lipase and its application in synthesis of biodiesel

Authors:  Wu, Qianqian1 ; Wu, Ke1 ; Mu, Wenxia1 ; Chen, Xia1 

Author affiliation:  1  Department of Biological and Environmental Engineering, Hefei University, Hefei 230022, China

Corresponding author:  Wu, K. (wuke_hfld@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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  254-258

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:  Alkaline lipase was immobilized on modified silica gel and glutaraldehyde was used as cross-linking agent. The optimal conditions for lipase immobilization were as follows: glutaraldehyde concentration of 0.8 g/L the ratio of lipase to the resin in weight as 30 U/g. The activity recovery of the enzyme was above 90% under optimal conditions. Effects of different solvents, the amount of immobilized lipase, water content, molar ratio of different substrate concentrations and fed-batch methods for methanol on technology of biodiesel synthesis by immobilized alkaline lipase were studied. Results showed that esterification ratio of the substrates achieved 82% catalyzed by immobilized alkaline lipase at 40°C for 8 h under the conditions as follows: 20 mL n-hexane, lipase amount of 7.5 g (12 U/g), water content of 4%, molar ratio of fatty acid to methanol of 1:1.2 and methanol fed-batch for three times.

Number of references:  14

Main heading:  Lipases

Controlled terms:  Aldehydes  -  Biodiesel  -  Catalysis  -  Crosslinking  -  Enzyme activity  -  Esters  -  Fatty acids  -  Gelation  -  Hexane  -  Methanol   -  Oxides  -  Resins  -  Silica  -  Silica gel  -  Substrates  -  Synthetic fuels  -  Water content

Uncontrolled terms:  Activity recovery  -  Alkaline lipase  -  Biodiesel synthesis  -  Concentration of  -  Cross linking agents  -  Different solvents  -  Different substrates  -  Fed batches  -  Glutaraldehydes  -  Immobilization   -  Immobilization conditions  -  Immobilized lipase  -  Lipase immobilization  -  Modified silica gel  -  Molar ratio  -  N-Hexane  -  Optimal conditions

Classification code:  801.3 Colloid Chemistry  -  802.2 Chemical Reactions  -  802.3 Chemical Operations  -  804 Chemical Products Generally  -  804.1 Organic Compounds  -  804.2 Inorganic Compounds  -  812 Ceramics, Refractories and Glass  -  813.1 Coating Techniques  -  815.1.1 Organic Polymers  -  801 Chemistry  -  444 Water Resources  -  461 Bioengineering and Biology  -  461.9 Biology  -  482.2 Minerals  -  522 Gas Fuels  -  523 Liquid Fuels  -  524 Solid Fuels  -  712.1 Semiconducting Materials  -  714.2 Semiconductor Devices and Integrated Circuits

DOI:  10.3969/j.issn.1002-6819.2009.09.045

Database:  Compendex

38.   Accession number:  20094512438331

Title:  Improved scheme and test comparison of drying jujube date using heat pump

Authors:  Yang, Xianliang1 ; Xie, Yingbai1 ; Jin, Guangya1 

Author affiliation:  1  School of Energy and Power Engineering, North China Electric Power University, Baoding 071003, China

Corresponding author:  Yang, X. (yxl15820@163.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  329-332

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:  Artificial drying can improve the quality of jujube and gain higher economic profit. According to the characteristics of jujube date in Taihang Mountain, two kinds of experimental schemes were carried out on a self-developed box-type heat pump dryer. Through analysis of drying rate and weight changes, the improved scheme was put forward and validated in experiment. The results of dehydration volume, drying energy consumption and heat showed that the improved drying scheme conforms to the water migration rule. The research achieved good drying effect and significantly energy saving effect.

Number of references:  7

Main heading:  Dewatering

Controlled terms:  Curing  -  Drying  -  Energy conservation  -  Experiments  -  Heat pump systems  -  Profitability  -  Pumps

Uncontrolled terms:  Artificial drying  -  Drying effects  -  Drying energy consumption  -  Drying rates  -  Economic profit  -  Energy-saving effect  -  Experimental scheme  -  Heat pump dryer  -  Heat pumps  -  Improved scheme   -  Jujube date  -  Taihang Mountains  -  Water migration  -  Weight change

Classification code:  911.2 Industrial Economics  -  901.3 Engineering Research  -  818.3 Rubber and Elastomer Processing  -  815.1 Polymeric Materials  -  802.3 Chemical Operations  -  802.2 Chemical Reactions  -  642.1 Process Heating  -  641.2 Heat Transfer  -  618.2 Pumps  -  616.1 Heat Exchange Equipment and Components  -  525.2 Energy Conservation

DOI:  10.3969/j.issn.1002-6819.2009.09.058

Database:  Compendex

39.   Accession number:  20094512438290

Title:  Performance detection experiment of precision seed metering device based on high-speed camera system

Authors:  Chen, Jin1 ; Bian, Jiang1 ; Li, Yaoming2 ; Zhao, Zhan2 ; Wang, Jialin1 

Author affiliation:  1  School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China

2  Key Lab. of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China

Corresponding author:  Chen, J. (ymli@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:  9

Issue date:  September 2009

Publication year:  2009

Pages:  90-95

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:  Seeds motion images during the sowing process were obtained using high-speed camera system. Image quality was enhanced effectively by means of the image processing which including the background elimination, image filter, image sharpening and binary processing. Detection method for precision seeder was established according to the analysis of area and characteristic values of centroid position of the seeds. Precision and sowing uniformity tests were carried out with different working parameters. The results of comparison between high-speed camera and manual detection showed that the relative error of seeding qualified index was less than 1% and coefficient of variation was less than 3%. The method presented in the paper is adapted to the accuracy requirements for performance detection of precision seeder.

Number of references:  16

Main heading:  Error detection

Controlled terms:  Agricultural machinery  -  Cameras  -  High speed cameras  -  Image quality  -  Imaging systems  -  Seed  -  Speed

Uncontrolled terms:  Binary processing  -  Characteristic value  -  Coefficient of variation  -  Detection experiments  -  Detection methods  -  High-speed camera system  -  Image filters  -  Image sharpening  -  Motion images  -  Performance detection   -  Precision seeder  -  Relative errors  -  Seed metering devices  -  Working parameters

Classification code:  821.4 Agricultural Products  -  821.1 Agricultural Machinery and Equipment  -  746 Imaging Techniques  -  931.1 Mechanics  -  742.2 Photographic Equipment  -  723.2 Data Processing and Image Processing  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  741 Light, Optics and Optical Devices

DOI:  10.3969/j.issn.1002-6819.2009.09.016

Database:  Compendex

40.   Accession number:  20094512438285

Title:  Assessment model of drought and flood disasters with variable fuzzy set theory

Authors:  Zhou, Huicheng1 ; Zhang, Dan1 

Author affiliation:  1  School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China

Corresponding author:  Zhang, D. (zhangdan_0915@126.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  56-61

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:  Drought and flood disasters are the most important factors that restrict the development of agriculture economic. Drought and flood evaluation plays a vital role in the disaster mitigation decision-making. In this paper, according to the fuzzy uncertainty of drought and flood disasters and based on the variable fuzzy set theory, the relative membership degree of the sample index in standard interval of each grade was identified. Taking the drought and flood disasters assessment of Shandong province as an example, authors applied the fuzzy set theory with multi-parameters combination and variable model (one linear model, three non-linear models) to evaluate the disaster. The results confirmed that the sample assessment grades were reasonable. Compared with the other models, the model in this research was simple and reliable, and it provided a reference for drought and flood disasters evaluation.

Number of references:  16

Main heading:  Drought

Controlled terms:  Disasters  -  Floods  -  Fuzzy logic  -  Fuzzy sets

Uncontrolled terms:  Assessment models  -  Disaster mitigation  -  Flood disaster  -  Fuzzy uncertainties  -  Linear model  -  Multiparameters  -  Non-linear model  -  Relative membership degree  -  Relative membership degrees  -  Shandong province   -  Variable fuzzy set  -  Variable model

Classification code:  914.2 Fires and Fire Protection  -  914.1 Accidents and Accident Prevention  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  502.1 Mine and Quarry Operations  -  921 Mathematics  -  484 Seismology  -  444 Water Resources  -  443.3 Precipitation  -  442.1 Flood Control  -  454.2 Environmental Impact and Protection

DOI:  10.3969/j.issn.1002-6819.2009.09.010

Database:  Compendex

41.   Accession number:  20094512438284

Title:  Model of risk assessment for agricultural drought based on two-layer soil computing model

Authors:  Chen, Xiaonan1, 2 ; Duan, Chunqing3 ; Liu, Changming3 ; Cao, Yusheng2 

Author affiliation:  1  China Institute of Water Resources and Hydropower Research, Beijing 100038, China

2  Administration of the South-to-North Water Diversion Middle Route Project, Beijing 100038, China

3  College of Water Sciences, Beijing Normal University, Beijing 100875, China

Corresponding author:  Duan, C. (xyz5451_cn@sina.com) 

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

Abbreviated source title:  Nongye Gongcheng Xuebao

Volume:  25

Issue:  9

Issue date:  September 2009

Publication year:  2009

Pages:  51-55

Language:  Chinese

ISSN:  10026819

CODEN:  NGOXEO

Document type:  Journal article (JA)

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