<RECORD 1>

Accession number:20122815240848
Title:Effect of farmland area variation on industrial structure in Wuqi county
Authors:Li, Ping (1); Zhu, Qingke (1); Wang, Lulu (1); Wang, Jing (1); Zhao, Yanmin (1); Zheng, Xueliang (1)
Author affiliation:(1) Key Laboratory of Soil and Water Conservation and Desertification Combating of Ministry of Education, Beijing Forestry University, Beijing 100083, China
Corresponding author:Zhu, Q.(zhuqingke@sohu.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:250-255
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:Principal component analysis (PCA) was used to analyze of Wuqi County statistics ranging from 1949 to 2007 to identify the main drivers of variations in cultivation, especially after the implementation of the Grain for Green program. The analysis examined the stages in cultivated land use, impact trends, and changes in the industrial structure. Results showed that, from 1949 to 1998, the main factors affecting farmland area became increasingly complicated and the number of principal components needed for analysis increased; however, with the implementation of Grain for Green in 1999, the components needed for analysis decreased. The contribution of the first principal component increased over time from 54.315% to 82.704%. The Grain for Green program can greatly influence farmland and local economies may depend too much on the hydrocarbon industry.
Number of references:26
Main heading:Farms
Controlled terms:Economics - Industry - Land use - Principal component analysis - Productivity - Public policy
Uncontrolled terms:Adjustment - Cultivated lands - Farmland - First principal components - Hydrocarbon industry - Industrial structures - Local economy - Principal Components
Classification code:922.2 Mathematical Statistics - 913.1 Production Engineering - 913 Production Planning and Control; Manufacturing - 971 Social Sciences - 912 Industrial Engineering and Management - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 403 Urban and Regional Planning and Development - 911 Cost and Value Engineering; Industrial Economics
DOI:10.3969/j.issn.1002-6819.2012.z1.042
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 2>

Accession number:20122815240829
Title:Design of intelligent control system for two-row precise seeding of wheat
Authors:Li, Jie (1); Zhao, Lixin (1); Bi, Jianjie (3); Ding, Xiaoling (1); Zhu, Pengfei (1)
Author affiliation:(1) Mechanical and Electronic Engineering College, Shandong Agricultural University, Tai'an 271018, China; (2) Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Tai'an 271018, China; (3) Agronomy College, Shandong Agricultural University, Tai'an 271018, China
Corresponding author:Zhao, L.(Xiaolingd@sdau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:134-140
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 adverse effects of wheel sliding on the seeding uniformity and ensure good sowing quality, a intelligent control system with stepping motor driving the seeder was designed. AT89C55 micro control unit (MCU) was used as control core, and the real-time seeding advancing speed was detected by the rotary encoder. Judged the speed and set the seeding space (or sowing rate) by microprocessor (CPU), this system regulated the stepping motor speed to drive the device to sow as needed. In addition, this system realized some auxiliary functions, such as liquid crystal display (LCD) and acousto optical alarm. The results showed that the system was stable and reliable, and could meet the seeding requirements.
Number of references:23
Main heading:Intelligent control
Controlled terms:Design - Intelligent systems - Liquid crystal displays - Stepping motors
Uncontrolled terms:Adverse effect - Auxiliary functions - Encoder - Man-machine dialogue - Micro control unit - Precise seeding - Rotary encoder - Wireless transmissions
Classification code:408 Structural Design - 705.3 Electric Motors - 723.4 Artificial Intelligence - 723.4.1 Expert Systems - 741.3 Optical Devices and Systems
DOI:10.3969/j.issn.1002-6819.2012.z1.023
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 3>

Accession number:20122815240835
Title:Effects of different hanging methods of RFID tags on reading rate in fruit tree
Authors:Qian, Jianping (1); Wu, Xiaoming (2); Yang, Xinting (2); Li, Ming (2); Wu, Baoguo (1); Wang, Yanan (3)
Author affiliation:(1) Department of Information, Beijing Forestry University, Beijing 100083, China; (2) National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China; (3) College of Life Science, Shandong Agricultural University, Taian 271018, China
Corresponding author:Wu, B.(wubg@bjfu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:170-174
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:RFID plays an appropriate role for single fruit tree identification, however its position of hanging on the tree affects the reading rate significantly. In this study, test environment was established in an apple orchard of Shandong province. The times of successful reading was obtained according to four treatment conditions, which were different distance between RFID tags and reader antennas (condition1), different vertical hanging height on the fruit trees (condition2), different horizontal hanging distance on the fruit trees (condition3) and different shades in the front of tags (condition4). The results showed that the times of successful reading reduced gradually with the increasing distance between RFID tags and reader antennas. The reading effect was sound in the range of 2.0 m, but there was a marked drop with 50% reading rate in the ranges of 3.0 m and 3.5 m. The decline in reading rate was shown in condition2 and condition3, as the distance between RFID tags and plane center line of reader antennas increased. In condition4, the times of successful reading with branch shade was higher than the times with fruit shades, but lower than the times of leaf shades. Based on the results, the optimum hanging position was: the tags hung on the side branch near the row space, which was 1.2-1.4 m higher than the ground and faced to the row space without shades.
Number of references:16
Main heading:Radio frequency identification (RFID)
Controlled terms:Forestry - Identification (control systems) - Orchards - Precision engineering
Uncontrolled terms:Apple orchards - Fruit trees - Hanging position - Reader antenna - Reading rate - RF-ID tags - Shandong province - Side branches - Test - Test Environment  - Treatment conditions
Classification code:731.1 Control Systems - 761 Nanotechnology - 821.0 Woodlands and Forestry - 821.3 Agricultural Methods
DOI:10.3969/j.issn.1002-6819.2012.z1.029
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 4>

Accession number:20122815240825
Title:Effects of water and nitrogen coupling on cotton nitrogen absorption and utilization under alternate root partition drip
Authors:Li, Peiling (1); Zhang, Fucang (2)
Author affiliation:(1) College of Engineering, Jiangxi Agricultural University, Nanchang 330045, China; (2) Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Northwest A and F University, Yangling, 712100, China
Corresponding author:Li, P.(lipeiling1981@tom.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:112-116
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 this study, nitrogen application (N<inf>90</inf>, N<inf>180</inf>, N<inf>270</inf>) and irrigation (W<inf>140</inf>, W<inf>200</inf>, W<inf>260</inf>) was completely modular designed for studying the coupling effects of water and nitrogen on cotton nitrogen absorption and utilization under alternate root partition drip. Amount of dry matter and nitrogen content of cotton with increased irrigation were markedly improved, medium nitrogen and high water coupling (N<inf>180</inf>, W<inf>260</inf>) was the best treatment for high dry matter amount and nitrogen content. From the perspective of improving yield, nitrogen uptake and utilization analysis, the results of medium nitrogen and high water (N<inf>180</inf>W<inf>260</inf>), high nitrogen and medium water (N<inf>270</inf>W<inf>200</inf>), high nitrogen and high water (N<inf>270</inf>W<inf>260</inf>) treatments were compared, which showed that nitrogen derived from fertilizer (Ndff), nitrogen recovery, apparent N-fertilizer recovery efficiency (ANRE), agronomic efficiency of applied N-fertilizer (AENF) in N<inf>180</inf>W<inf>260</inf> treatment is higher than that in the other treatments. There is no significant difference in physiological N-fertilizer use efficiency (PNUE) in all the treatments. Medium nitrogen and high water (N<inf>180</inf>W<inf>260</inf>) was the best coupling of water and nitrogen, which provided a reference for water and fertilizer management in cotton.
Number of references:20
Main heading:Nitrogen fertilizers
Controlled terms:Cotton - Efficiency - Irrigation - Nitrogen - Water absorption
Uncontrolled terms:Coupling effect - Drip irrigation - Dry matters - Fertilizer management - High dry matter - High water - High-nitrogen - Nitrogen absorption - Nitrogen content - Nitrogen derived from fertilizers  - Nitrogen recovery - Nitrogen uptake - Nitrogen-use efficiency - Recovery efficiency - Use efficiency
Classification code:802.3 Chemical Operations - 804 Chemical Products Generally - 821.3 Agricultural Methods - 821.4 Agricultural Products - 913.1 Production Engineering
DOI:10.3969/j.issn.1002-6819.2012.z1.019
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 5>

Accession number:20122815240842
Title:Screening of phosphate-solubilizing fungi from phosphate -rich soils in Dianchi and its effect on growth promoting in Brassica napus
Authors:Chen, Minghui (1); Mo, Minghe (1); Ma, Li (1); Duan, Changqun (1); Fang, Dunhuang (2); Wang, Yong (3); Yang, Faxiang (4); Zhou, Feng (5)
Author affiliation:(1) Key Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming 650091, China; (2) Yunnan Academy of Tobacco Agricultural Science, Yuxi 653100, China; (3) Wenshan Shanqi Research Institute, Wenshan, 663000, China; (4) Yunnan Yunye Fertilizer Co. Ltd., Kunming 650217, China; (5) Shandong TaiFengYuan Biotechnology Co. Ltd., Jinan 250014, China
Corresponding author:Mo, M.(minghemo@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:209-215
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:Forty-eight isolates of phosphate solubilizing fungi (PSF) were isolated from 89 soil samples and their tricalcium phosphate (TCP) solubilization efficiencies were evaluated by Mo-blue method. The results showed that the concentration of soluble phosphates in liquid cultures ranged from 14.45 to 64.87 mg/L. SPF46, SPF47, and Mo-Po were the most efficient isolates releasing 55.44, 59.78 and 64.87 mg/L soluble phosphate in liquid cultures, respectively. By morphological features and ITS rDNA sequences homology analysis, the three isolates were identified as Penicillium citreonigrum, P. oxalicum and Aspergillus niger, respectively. They showed the highest phosphorus solubilization efficiency in the presence of TCP compared to the other tested FePO<inf>4</inf>&middot4H<inf>2</inf>O and AlPO<inf>4</inf>. Pot experiment showed that the inoculation of the three PSF isolates significantly increased the nape growth. Individual inoculation of the three isolates resulted in 10.16%-294.7% increase in root length, 32.19%-134.5% increase in plant height, 35.53%-170.5% increase in leaf diameter, 30.71%-189.5% in fresh weight and 56%-224% increase in dry weight, respectively. Meanwhile, a consortium of the three isolates showed 129.4% increase in root length, 60.41% increase in plant height, 170.5% increase in leaf diameter, 246.1% increase in fresh weight and 272.2% increase dry weight, respectively.
Number of references:30
Main heading:Liquids
Controlled terms:Aspergillus - Fungi - Growth (materials) - Phosphorus - Soils - Solubility
Uncontrolled terms:Aspergillus niger - Brassica napus - Dry weight - Fresh weight - Liquid culture - Morphological features - Plant height - Pot experiment - rDNA sequence - Root length  - Soil sample - Tricalcium phosphates
Classification code:461.9 Biology - 483.1 Soils and Soil Mechanics - 801.4 Physical Chemistry - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.z1.036
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 6>

Accession number:20122815240857
Title:Optimization of technical parameters of compression molding of dried fish floss block
Authors:Ren, Jinhai (1); Chen, Hong (1); Xiong, Shanbai (2); Zong, Li (1); Wan, Peng (1)
Author affiliation:(1) College of Engineering, Huazhong Agricultural University, Wuhan 430070, China; (2) College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author:Chen, H.(chenhong806@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:306-311
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 influence of compression molding technology on the quality of fish floss block, the effect of adding amount of pre-gelatinized sticky, the molding press, the pressure keeping time and the molding velocity on fish floss block hardness, sensory evaluation and textural properties were analyzed. The orthogonal experiment was designed with the influences of adding amount of pre-gelatinized sticky, the molding press, the pressure keeping time. Results showed that the sensory score had significantly positive correlation to hardness and chewiness, significantly negative correlation to springiness and adhesiveness. The effect of the molding press on the sensory score was significant. The order of the parameters for increasing the sensory score was the molding press&gt; adding amount of pre-gelatinized sticky&gt; the pressure keeping time. The optimum processing parameters were obtained as follows: adding amount of pre-gelatinized sticky was 20%, molding press was 3 MPa, pressure keeping time was 20 s, and molding velocity was 40 mm/min. The research can provide design basis for the compression molding equipment of dried fish floss block.
Number of references:22
Main heading:Compression molding
Controlled terms:Fish - Hardness - Optimization - Presses (machine tools) - Processing
Uncontrolled terms:Compression molding technology - Dried fish floss block - Molding press - Negative correlation - Optimum processing - Orthogonal experiment - Positive correlations - Sensory evaluation - Sensory scores - Textural properties  - Texture profile analysis
Classification code:921.5 Optimization Techniques - 913.4 Manufacturing - 822 Food Technology - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 951 Materials Science - 816.1 Processing of Plastics and Other Polymers - 471 Marine Science and Oceanography - 461 Bioengineering and Biology - 421 Strength of Building Materials; Mechanical Properties - 603.1 Machine Tools, General
DOI:10.3969/j.issn.1002-6819.2012.z1.051
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 7>

Accession number:20122815240830
Title:Development of field local position system for precision breeding
Authors:Li, Ming (1); Zhang, Min (1); He, Juying (3)
Author affiliation:(1) Hunan Provincial Engineering Technology Research Center for Modern Agricultural Equipment, Changsha 410128, China; (2) College of Engineering, Hunan Agricultural University, Changsha 410128, China; (3) Long Ping High-Tech. Co. Ltd., Changsha 410000, China
Corresponding author:Li, M.(liming@hunau.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:141-145
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Precision breeding and a local position system (LPS) substitute GPS for field local positioning was proposed in this paper. The system mainly consisted of an omnidirectional vision sensor, artificial landmarks, PC and PC software operating vehicle. The artificial landmarks adopted a primary landmark and three subsidiary landmarks. The algorithm mainly included landmark color pixels beyond threshold which were extracted and divided as a small area based on the Euclid geometrical distance. The center of gravity of the extracted small area was calculated and represented as a position of one landmark. Omnidirectional vision sensor position was estimated according with circumferential theorem and geometric transformation formula based on the direction angles. Experiments were conducted on a level lawn under the sun in a 30 m&times;30 m rectangular area. Results showed that the distance RMS error between estimated position and test position was about 15 cm. The system is feasible for precision breeding such as field positioning, precision fertilizing and spaying and production mapping.
Number of references:16
Main heading:Sensors
Controlled terms:Image processing - Mathematical transformations
Uncontrolled terms:Artificial landmark - Breeding - Center of gravity - Color pixels - Direction angle - Field positioning - Geometric transformations - Local positioning - Localization - Omnidirectional vision sensor  - Position systems - Precision Agriculture - Rectangular area - RMS errors - Small area
Classification code:741 Light, Optics and Optical Devices - 801 Chemistry - 921.3 Mathematical Transformations
DOI:10.3969/j.issn.1002-6819.2012.z1.024
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 8>

Accession number:20122815240811
Title:Soybean mechanical damage characteristics and mechanism during transportation by bucket elevator
Authors:Gao, Lianxing (1); Shao, Zhigang (1); Jiao, Weipeng (1); Liu, Chang (1); Yang, Dexu (1); Liu, Dejun (1)
Author affiliation:(1) College of Engineering, Shenyang Agricultural University, Shenyang 110866, China
Corresponding author:Liu, D.(ldjldj@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:26-32
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 design of bucket elevator and reduce the damage in the transportation process, three soybean varieties (Liaodou 15, Liaodou 18 and Heinong 40) were used as the samples. TD250 bucket elevator was involved in the soybean injury test of the ascension delivery, and the soybean mechanical damage characteristics and mechanism were studied. The results showed that the mechanical damage rate of transportation process by soybean bucket elevator was about 10%. Damage characteristics mainly contained broken, two discs, defect and skin damaged. Damage rate of skin damaged was the most among the damage characteristics, about 7.5%. Mechanical damage was mainly caused by shear force, friction and impact pressure made by dust pan, and impact reaction force produced by soybean hitting the machine cover under unloading. Damage rate was reduced at 6.7% after loading and unloading structure and operating parameters optimization.
Number of references:20
Main heading:Oilseeds
Controlled terms:Conveyors - Damage detection - Kinetic parameters - Loading - Mechanisms - Unloading
Uncontrolled terms:Bucket elevators - Characteristics and mechanisms - Damage rate - Impact pressures - Impact reaction - Loading and unloading - Mechanical damages - Operating parameters - Shear force - Soybean  - Transportation process
Classification code:821.4 Agricultural Products - 692.1 Conveyors - 674.1 Small Marine Craft - 931 Classical Physics; Quantum Theory; Relativity - 672 Naval Vessels - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 601.3 Mechanisms
DOI:10.3969/j.issn.1002-6819.2012.z1.005
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 9>

Accession number:20122815240820
Title:Variation analysis of starting friction torque for slewing bearing based on poor information theory
Authors:Xia, Xintao (1); Fan, Ju (1); Chen, Long (1); Liu, Jing (2); Wang, Jing'e (2)
Author affiliation:(1) School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China; (2) Luoyang LYC Bearing Limited Company, Luoyang 471039, China
Corresponding author:Xia, X.(xiaxt1957@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:81-86
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 information poor theory, the relationship between the starting friction torque of the slewing bearing and the load was discussed to reveal nonlinear evolution characteristics of the estimated true value, fluctuation range, information entropy, variation coefficient, and probability density function of the starting friction torque. In the simulated experiment, two different slewing bearings were adopted, the load was changed five times for each bearing, the starting friction torques of six points which were evenly distribution on the surface of the inner ring were measured simultaneously, and variation analysis of the test data was made. The test result showed that with the rise of the load, the estimated true value nonlinearly increased and the variation coefficient nonlinearly decreased in view of the overall situations, at which there was a sensitive spot where the variation coefficient increased abnormally. This indicated that the starting friction torque of the slewing bearing had the uncertainty of the variable and the polytropy of the function. The findings provide a reference for analyzing the measuring system and improving the bearing performance.
Number of references:15
Main heading:Tribology
Controlled terms:Bearings (structural) - Friction - Information theory - Probability density function - Torque
Uncontrolled terms:Friction torque - Non-Linearity - Slewing bearings - Uncertainty - Variation coefficient
Classification code:408.2 Structural Members and Shapes - 421 Strength of Building Materials; Mechanical Properties - 716.1 Information Theory and Signal Processing - 921 Mathematics - 931 Classical Physics; Quantum Theory; Relativity - 931.1 Mechanics
DOI:10.3969/j.issn.1002-6819.2012.z1.014
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 10>

Accession number:20122815240869
Title:Correlation between sensory attributes and chemical components of black and green tea
Authors:Cheng, Huan (1); He, Wei (1); Zhao, Lei (2); Hu, Xiaosong (1); Wu, Jihong (1)
Author affiliation:(1) National Engineering Research Center for Fruit And Vegetable Processing, College of Food Science and Nutrition Engineering, China Agricultural University, Beijing 100083, China; (2) Institute of Food and Agricultural Standardization, China National Institute of Standardization, Beijing 100088, China
Corresponding author:Wu, J.(wjhcau@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:375-380
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 studywas conducted to analyse the correlation between the sensory attributes and chemical components of black and green tea. Different kinds of black and green tea were chosen to study the key factors in the tea quality. By sensory evaluation and correlation analysis on various quality factors (appearance, aroma, liquor color, taste and infused leaves), taste was determined as the key factor. Ten taste attributes (heavy flavor, thick flavor, sweet flavor, fresh flavor, mellow flavor, astringency, tenderness, stale flavor, purity and fired flavor) was determined to evaluate taste profiles by yardstick estimation method. The contents of the three main flavor substances (polyphenols, caffeine, theanine) were determined. By the differently significant analysis of ten taste attributes among various tea and the correlated analysis between flavor profiles and the three flavor components, the freshness and astringency were dominated by the contents of theanine and caffeine respectively, and were the main differences of various tea species. This study established a method for tea grading and quantitative analysis on tea sensory quality.
Number of references:25
Main heading:Chemical analysis
Controlled terms:Correlation methods - Phenols - Quality control
Uncontrolled terms:Chemical component - Correlation analysis - Estimation methods - Flavor profiles - Flavor substances - Green tea - Key factors - Polyphenols - Quality factors - Sensory attributes  - Sensory evaluation - Sensory qualities - Taste attributes - Tea - Theanine
Classification code:801 Chemistry - 804 Chemical Products Generally - 804.1 Organic Compounds - 913.3 Quality Assurance and Control - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2012.z1.063
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 11>

Accession number:20122815240831
Title:Noise source identification by spherical beamforming based on sound pressure spherical harmonics decomposition
Authors:Chu, Zhigang (1); Zhou, Yanan (1); Wang, Guangjian (2); He, Yansong (1)
Author affiliation:(1) College of Mechanical Engineering, Chongqing University, Chongqing 400044, China; (2) The State Key Laboratory of Mechanical Transmission, Chongqing 400044, China
Corresponding author:Chu, Z.(zgchu@cqu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:146-151
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 beamforming algorithm for spherical microphone arrays based on sound pressure spherical harmonics decomposition can identify simultaneously noise sources from all directions in three-dimensional space, especially in cabin. A performance simulation of noise source identification was carried out for the typical rigid spherical array with 50 microphones. The results showed that the truncated length of the spherical harmonics, frequency and position of the noise sources had significant effects on the response of arrays, the optimal truncated length was 5 and the maximum MSL was up to -15.35 dB at 2000 Hz. Furthermore, software for analyzing the dynamic performance of spherical array and imaging the acoustic sources was developed. The test example imaging of a given source using the software proves that the algorithm and the software is accurate.
Number of references:21
Main heading:Harmonic analysis
Controlled terms:Acoustic arrays - Acoustic signal processing - Algorithms - Beamforming - Identification (control systems) - Noise pollution - Software testing - Ultrasonics
Uncontrolled terms:Acoustic sources - Beamforming algorithms - Dynamic performance - In-cabin - Noise source - Noise source identification - Performance simulation - Sound pressures - Spherical array - Spherical harmonics  - Spherical microphone array - Test examples - Three dimensional space
Classification code:921 Mathematics - 753.1 Ultrasonic Waves - 752.1 Acoustic Devices - 751.4 Acoustic Noise - 751 Acoustics, Noise. Sound - 921.6 Numerical Methods - 732 Control Devices - 731 Automatic Control Principles and Applications - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 713 Electronic Circuits - 731.1 Control Systems
DOI:10.3969/j.issn.1002-6819.2012.z1.025
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 12>

Accession number:20122815240854
Title:Effects of hot and cold boning technologies on quality of beef
Authors:Sun, Zhichang (1); Li, Yongpeng (1); Zhao, Huiping (2); Yu, Qunli (1); Sun, Baozhong (2)
Author affiliation:(1) College of Food Science and Engineering, Gansu Agriculture University, Lanzhou 730070, China; (2) Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (3) College of Animal Science, Hebei Agricultural University, Hebei Baoding 071001, China
Corresponding author:Sun, B.(sunbaozhong@sina.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:288-293
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 effects of hot and cold boning technology on the quality of beef, the chemical composition, meat quality, sarcomere length, sensory attributes, texture profile analysis (TPA) and volatile compounds of Longissimus muscle from thirty-five Simmental beef were determined. The results showed that chemical composition of hot and cold boning beef was no significant difference (P&gt;0.05). Compared to cold boning beef, Hot boning beef exhibited significantly higher shear force, lower tenderness in sensory attributes, shorter sarcomere length, and higher hardness, gumminess and chewiness, raised lightness L* of beef, but no significant effects on redness a* and yellowness b* (P&gt;0.05). Different boning styles did not influence the water holding capacity (WHC) of beef. Hot boning technology significantly increased volatile compounds associated with lipid oxidation, which including hexanal, heptanal, 1-octen-3-ol, 2-pentylfuran. These results indicted that hot boning technology could decrease tenderness, increase lightness L* of beef, and have significant effect on volatile compounds.
Number of references:24
Main heading:Meats
Controlled terms:Beef - Boning - Chemical analysis - Image quality - Lipids - Technology - Volatile organic compounds
Uncontrolled terms:1-octen-3-ol - Chemical compositions - Heptanal - Hexanal - Lipid oxidation - Longissimus - Meat quality - Sarcomere length - Sensory attributes - Shear force  - Texture profile analysis - Volatile compounds - Volatiles - Water holding capacity
Classification code:901 Engineering Profession - 822.3 Food Products - 822.2 Food Processing Operations - 804.1 Organic Compounds - 804 Chemical Products Generally - 801 Chemistry - 741 Light, Optics and Optical Devices
DOI:10.3969/j.issn.1002-6819.2012.z1.048
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 13>

Accession number:20122815240852
Title:Size effect on temperature distribution of instant rice during microwave reheating process
Authors:Fan, Daming (1); Chen, Wei (1); Li, Chunxiang (1); Wang, Liyun (1); Pang, Ke (2); Zhao, Jianxin (1); Zhang, Hao (1)
Author affiliation:(1) National Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (2) Wuxi Huashun Minsheng Food Co. Ltd., Wuxi 214218, China
Corresponding author:Chen, W.(weichen@jiangnan.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:273-280
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 performance in food microwave reheating and avoid the "cold spots", real time determination of sample temperature by the optical fiber probe, combined with axis analysis and temperature variation coefficient calculation was used. The effect of sample size on the temperature distribution of instant rice during the microwave reheating in a microwave workstation was investigated. The results showed that hot-spot temperature of rice with the same radius shifted from the geometric center region to the surrounding border over the increase of L/D ratio. When the L/D ratio was equal or less than 0.75, the increase of radius led the hot point to focus on the center area. Hot-spot temperature transferred to the edge and surface regions as the radius increased under the L/D ratio range of 0.75 to 1.25. Coefficient of variance (COV) of temperature derived from standard deviation was used to analyze the temperature uniformity. Rice cylinder with 4 cm in radius and 4 cm in height exhibited the best uniform temperature distribution during microwave reheating. Numerical simulation of temperature distribution in the rice microwave reheating process showed that the predicted data with determination coefficient (R²) of 0.990 to 0.999 matched with the experimental results.
Number of references:20
Main heading:Temperature distribution
Controlled terms:Microwave heating - Numerical analysis - Optical fibers
Uncontrolled terms:Coefficient of variance - Cold spots - Determination coefficients - Geometric center - Hot point - Hotspot temperature - Instant rice - L/D ratio - Microwave reheating - Optical fiber probe  - Real time - Sample sizes - Sample temperature - Size effects - Standard deviation - Surface region - Temperature uniformity - Temperature variation
Classification code:641.1 Thermodynamics - 711.1 Electromagnetic Waves in Different Media - 741.1.2 Fiber Optics - 921.6 Numerical Methods
DOI:10.3969/j.issn.1002-6819.2012.z1.046
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 14>

Accession number:20122815240853
Title:Effect of composite conting with nano-silicon dioxide on fresh-keeping of preserved eggs
Authors:Yin, Yueling (1); Liu, Yao (1); Zhang, Jianhao (1); Wei, Sheng (1)
Author affiliation:(1) Key Lab. of Meat Processing and Quality Control, Ministry of Education, National Center of Meat Quality and Safety Control, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author:Zhang, J.(nau_zjh@njau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:281-287
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To protect the quality of fresh-keeping preserved eggs, polyvinyl alcohol (PVA)-based composite coating-packaging materials were modified by adding nano-SiO<inf>2</inf>. The effects of nano-SiO<inf>2</inf> stearic acid, glutaraldehyde and reaction temperature on the water vapor transmission of formed films with composite coating-packaging materials were investigated by response surface methodology. At the end of the storage, the physical, chemical, microbiological and sensory indicators of the eggs of each group were measured and compared. The results showed that the physical, chemical, microbiological and sensory indicators of the twice coating-packaging group of preserved eggs with the optimized PVA-based nano-packaging materials was stronger than that of the other three groups (p&gt;0.05). These results indicated that the preserved eggs coating with Itype of PVA-based nano-composite materials could effectively prevent the water loss, inhibit microbial growth, protect the color and flavor of preserved eggs after 6 months storage. This study provides a technology basis for storage of preserved eggs.
Number of references:20
Main heading:Nanocomposite films
Controlled terms:Aldehydes - Coatings - Composite coatings - Composite materials - Energy storage - Indicators (chemical) - Packaging materials - Polyvinyl alcohols - Silica - Stearic acid
Uncontrolled terms:Glutaraldehydes - Microbial growth - Nano- SiO - Nano-packaging - Nano-silicon - Polyvinyl alcohol (pva) - Preserved eggs - PVA-based - Reaction temperature - Response surface methodology  - Water loss - Water vapor transmission
Classification code:815.1.1 Organic Polymers - 813.2 Coating Materials - 812 Ceramics, Refractories and Glass - 811 Cellulose, Paper and Wood Products - 804.1 Organic Compounds - 951 Materials Science - 804 Chemical Products Generally - 712.1 Semiconducting Materials - 702 Electric Batteries and Fuel Cells - 694.2 Packaging Materials - 415 Metals, Plastics, Wood and Other Structural Materials - 801 Chemistry
DOI:10.3969/j.issn.1002-6819.2012.z1.047
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 15>

Accession number:20122815240837
Title:Design of intelligent greenhouse information management system with hybrid architecture
Authors:Xiong, Yingjun (1); Shen, Mingxia (1); Liu, Yonghua (1); Sun, Yuwen (1); Lu, Mingzhou (1); Liu, Longshen (1); Zheng, Bin (1)
Author affiliation:(1) College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author:Shen, M.(mingxia@njau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:181-185
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to meet the request of information management for intelligent greenhouse with Internet of Things (IOT), an intelligent greenhouse information management system was designed based on Client/Server(C/S) and Browser/Server (B/S). The system consisted of local management subsystem, database subsystem and remote management subsystem. Error data of greenhouse sensor network was checked by distributing diagram. According to humidity resistance characteristic of dendrobium officinale, the system realized the fuzzy decision function of greenhouse air temperature, humidity and light intensity based on Mamdani reasoning. By Asynchronous JavaScript and XML (AJAX) technology, the Web data asynchronous interaction framework was designed. Server push technology was used to achieve action state real-time synchronization of greenhouse mechanism. The system was implemented in the intelligent greenhouse of Jiang Su Agriculture Expo Garden, which accomplished successfully collection, processing, storage, display and decision-making of greenhouse information in local area network, and efficient remote access and management in wide area network.
Number of references:20
Main heading:Information management
Controlled terms:Computer architecture - Design - Fuzzy control - Greenhouses - Sensor networks
Uncontrolled terms:Ajax - Asynchronous interaction - Asynchronous javascript and xmls - Browser/server - Client/server - Error data - Fuzzy decision - Greenhouse air - Humidity resistance - Hybrid architectures  - Hybrid structure - Information management systems - Internet of Things (IOT) - Light intensity - Local management - Mamdani - Push technology - Remote access - Remote management - Web data
Classification code:903.2 Information Dissemination - 732 Control Devices - 731 Automatic Control Principles and Applications - 921 Mathematics - 723 Computer Software, Data Handling and Applications - 408 Structural Design - 402.1 Industrial and Agricultural Buildings - 722 Computer Systems and Equipment
DOI:10.3969/j.issn.1002-6819.2012.z1.031
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 16>

Accession number:20122815240822
Title:Dynamic variations of soil moisture and water use efficiency of maize under sprinkler irrigation
Authors:Wang, Yong (1); Bai, Lingxiao (1); Zhao, Ju (2); Li, Xing (1)
Author affiliation:(1) Inner Mongolia Engineering Research Center for Water-Saving Agriculture, Hohhot, 010022, China; (2) Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot, 010031, China
Corresponding author:Wang, Y.(wangyonglsx@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:92-97
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 irrigation quota of maize and water saving effect of sprinkler irrigation on Erdos Plateau, a large-scale field experiment was conducted in sprinkler irrigation base of maize in Saiwushu town of Erdos from May to October, 2009. Dynamic variations of soil moisture in maize field, maize yield and its components, water consumption and water use efficiency (WUE) under sprinkler and pipeline irrigation were tested and quantitatively analyzed. The results showed that the changed range of soil moisture in sprinkler treatment was less than that under pipeline irrigation throughout maize growth period. Soil moisture in 20-60 cm layer was slightly higher than the other layers in sprinkler treatment. Water infiltration rate under sprinkler irrigation was lower than that under pipeline irrigation. Sprinkler irrigation quota affected kernel number per ear and seed weight per kernel, and thus maize yield, and slightly affected the ear number on stalk. Difference in yields of maize under sprinkler and pipeline irrigation was not significant when sprinkler irrigation quota was higher than 4965 m³/hm². WUE was 1.26 kg/m³ in sprinkler irrigation quota of 5430 m³/hm² (17.76% higher than that of pipeline irrigation). The ratio of irrigation to water consumption was 70.40%-88.90%, and it increased with irrigation quota. Without well watered from sowing to seedling stage, numbers of ears on stalk was declined.
Number of references:20
Main heading:Sprinkler systems (irrigation)
Controlled terms:Infiltration - Pipelines - Soil moisture - Soil surveys - Water conservation - Water supply - Water treatment
Uncontrolled terms:Dynamic variations - Field experiment - Growth period - Irrigation quotas - Maize - Maize yield - Seed weight - Sprinkler irrigation - Water consumption - Water infiltration  - Water saving - Water-use efficiency - WUE
Classification code:444 Water Resources - 445.1 Water Treatment Techniques - 446.1 Water Supply Systems - 483.1 Soils and Soil Mechanics - 619.1 Pipe, Piping and Pipelines - 821.1 Agricultural Machinery and Equipment
DOI:10.3969/j.issn.1002-6819.2012.z1.016
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 17>

Accession number:20122815240813
Title:Design and experiment of high performance profiling terrain chassis with power train
Authors:Wang, Ya (1); Chen, Sizhong (1); Li, Haitao (2); Liu, Pingyi (2)
Author affiliation:(1) School of Mechanical and Vehicle Engineering, Beijing Institute of Technology, Beijing 100081, China; (2) College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Chen, S.(chensz@bit.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:39-44
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:Due to poor adaptability to terrain and lack of adhesive force, common agricultural machinery chassis are easy to cause wheel-slippage when they work in hilly area. Aiming at the problems, an eight-wheel driven chassis adopting the principle of profiling terrain was designed with five degree of freedom. The structure parameters of the chassis was calculated and analyzed. The test of sample machine was carried out, and the results showed that the chassis had good adaptability to the terrain, good traffic ability and flexible steering ability. It can provide enough adhesion force and meet requirements for agricultural machinery working in rough hilly area.
Number of references:21
Main heading:Chassis
Controlled terms:Agricultural machinery - Copying - Design - Electric power transmission - Landforms - Wheels
Uncontrolled terms:Adhesion forces - Adhesive force - Degree of freedom - Hilly areas - Structure parameter - Wheel-slippage
Classification code:903.2 Information Dissemination - 821.1 Agricultural Machinery and Equipment - 706.1.1 Electric Power Transmission - 663.2 Heavy Duty Motor Vehicle Components - 601.2 Machine Components - 481.1 Geology - 408 Structural Design
DOI:10.3969/j.issn.1002-6819.2012.z1.007
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 18>

Accession number:20122815240832
Title:Rule-based control strategy application on power-split hybrid powertrain
Authors:Du, Jiuyu (1); Wang, Hewu (1); Huang, Haiyan (1)
Author affiliation:(1) State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China; (2) China Automotive Energy Research Center (CAERC), Beijing 100084, China
Corresponding author:Du, J.(dujiuyu@tsinghua.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:152-157
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:Targeting to further improve the fuel economy of the city bus with power-split hydraulic hybrid powertrain operating under urban cycle, and take advantage the high power density of hydraulic hybrid fully, a kind of improved rule-based control strategy was proposed. Mathematic model was setup in Matlab/Simulink to investigate adaptive ability, effectiveness of rule-based control strategy was applied on the city bus with designed hybrid powertrain. The simulation results showed: with proposed hybrid powertrain, adopting power management of rule-based method, 23.4% improvement on fuel economy can be achieved.
Number of references:27
Main heading:Hybrid powertrains
Controlled terms:Control theory - Energy management - Energy transfer - Fuel economy - Vehicles
Uncontrolled terms:Adaptive ability - City bus - Driving cycle - Dual planery - High power density - Hydraulic hybrids - Mathematic model - MATLAB /simulink - Power managements - Power splits  - Rule-based control - Rule-based method
Classification code:432 Highway Transportation - 521 Fuel Combustion and Flame Research - 525 Energy Management and Conversion - 525.4 Energy Losses (industrial and residential) - 663.2 Heavy Duty Motor Vehicle Components - 731.1 Control Systems
DOI:10.3969/j.issn.1002-6819.2012.z1.026
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 19>

Accession number:20122815240850
Title:Intermittent microwave vacuum drying characteristics and dynamics model of sugar ginger
Authors:Li, Weixin (1); Wei, Wei (1); He, Zhigang (1); Lin, Xiaozi (1); Liang, Zhangcheng (1)
Author affiliation:(1) Agricultural Products Process Research Centre, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China; (2) Institute of Agricultural Engineering Technology, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
Corresponding author:Li, W.(lwx406@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:262-266
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 experiments of microwave vacuum drying of wet sugar were conducted to study drying mode avoid singing, the effects of vacuum degree, specific power, material size on dry rate and quality were analyzed, and a drying dynamic model was established. The results showed that it could prevent singing or browning of sugar ginger by using the intermittent microwave vacuum drying technology, the proper microwave heating and interval time were 30 and 90 s respectively, the specific power was 10-15 W/g, vacuum degree was -80 kPa; the dynamic model of microwave vacuum drying for sugar ginger agreed with index model, which could be used for describing the relationship among moisture content, drying time, acuum degree, specific power and material size. The experiment results provided the technical basis for controllable industrialization production of sugar ginger.
Number of references:18
Main heading:Vacuum technology
Controlled terms:Drying - Dynamic models - Dynamics - Experiments - Food additives - Microwaves - Models - Secondary batteries - Sugars - Vacuum
Uncontrolled terms:Drying time - Dynamics models - Index models - Interval time - Microwave - vacuum drying - Specific power - Vacuum degree
Classification code:931.1 Mechanics - 921 Mathematics - 902.1 Engineering Graphics - 901.3 Engineering Research - 804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 711 Electromagnetic Waves - 702.1.2 Secondary Batteries - 642.1 Process Heating - 633 Vacuum Technology
DOI:10.3969/j.issn.1002-6819.2012.z1.044
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 20>

Accession number:20122815240864
Title:Technology optimization of polyphenols extraction from apple pomace
Authors:Wei, Ying (1); Ji, Baoping (1); Zhou, Feng (1); Zhang, Di (1); Liu, Yixiang (1)
Author affiliation:(1) College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Ji, B.(jibaoping@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:345-350
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To optimize conditions of polyphenols extraction from apple pomace and obtain the relationship between technology and polyphenols, microwave-assisted extraction was applied for polyphenols extraction from apple pomace in this study. The factors (particle size of apple pomace, liquid/solid ratio, ethanol concentration, microwave power and microwave treatment time) affecting extraction yield, were analyzed to optimize the extraction technologies. The evaluation index included total content of polyphenols, flavone, procyanidins and antioxidant activity. The extraction technologies of polyphenolic compounds from apple pomace were evaluated using evidence theory. According to the belief function, plausibility function and evidential ratiocination algorithms, the utility interval number of each extraction technology was obtained. Furthermore, the rank order of all technologies and the optimal extraction technology were attained. The results showed that the optimal conditions were as follows: materials through 60 mesh sieve, liquid to solid ratio of 30 mL/g, ethanol concentration of 60%, microwave power of 600 W, extraction time of 70 s. Under these conditions, the extraction rate of apple polyphenols was 213.83 mg/100 g, flavone was 83.21 mg/100 g, procyanidins was 52.79 mg/100 g, and EC<inf>50</inf> was 3.71 mg/100 mL. The study analysis showed that the evidence theory was efficient for polyphenols extraction from apple pomace.
Number of references:18
Main heading:Technology
Controlled terms:Ethanol - Extraction - Fruits - Microwave generation - Microwave power transmission - Optimization - Phenols - Uncertainty analysis
Uncontrolled terms:Antioxidant activities - Apple pomace - Belief function - Ethanol concentrations - Evaluation index - Evidence theories - Extraction rate - Extraction technology - Extraction time - Extraction yield  - Interval number - Liquid to solid ratio - Mesh sieves - Microwave power - Microwave treatment - Microwave-assisted extraction - Optimal conditions - Plausibility function - Polyphenolic compound - Polyphenols  - Procyanidins - Rank order - Technology optimization - Total content
Classification code:921.5 Optimization Techniques - 901 Engineering Profession - 821.4 Agricultural Products - 922.1 Probability Theory - 804.1 Organic Compounds - 714.2 Semiconductor Devices and Integrated Circuits - 706.1.1 Electric Power Transmission - 802.3 Chemical Operations
DOI:10.3969/j.issn.1002-6819.2012.z1.058
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 21>

Accession number:20122815240859
Title:Alkali-extraction and antioxidant activity of total flavonoid from sedum aizoon L.
Authors:Wang, Hongfei (1); Liu, Fei (1); Xu, Chao (1); Lin, Yan (1); Li, Hesheng (1); Shao, Xingfeng (1)
Author affiliation:(1) Department of Food Science and Engineering, Ningbo University, Ningbo, 315211, China
Corresponding author:Wang, H.(wanghongfei@nbu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:317-321
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 alkali-extraction technology and antioxidant activity of total flavonoid from sedum aizoon L. were studied. The influences of the ratio of sedum aizoon L. to solvent, solvent pH value, extraction temperature and extraction time on extraction efficiency were investigated by single factor experiment, and the extraction parameters were optimized by orthogonal experiment. The results showed that the optimal parameters of extraction were as follow: the ratio of sedum aizoon L. to solvent was 1:10, solvent pH was 9, extraction temperature was 100&deg;C and extraction time was 6 h. Under these conditions, the yield of total flavonoid from sedum aizoon L. was 5.37%. Total flavonoid from sedum aizoon L. has a obvious antioxidant activity, which could scavenge O<inf>2</inf>^-&middot, OH&middot and DPPH&middot effectively, and the IC<inf>50</inf> values were 0.013, 0.109 and 0.996 mg/mL, respectively. The results can provide a scientific basis for further development and utilization of sedum aizoon L.
Number of references:18
Main heading:Extraction
Controlled terms:Experiments - Optimization - Solvents - Technology
Uncontrolled terms:Antioxidant - Antioxidant activities - Extraction efficiencies - Extraction temperatures - Extraction time - Optimal parameter - Orthogonal experiment - pH value - Sedum aizoon L. - Total flavonoid
Classification code:802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 901 Engineering Profession - 901.3 Engineering Research - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.z1.053
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 22>

Accession number:20122815240862
Title:Preparation of ACE inhibiting factors from garlic with pulsed ultrasonic assisted enzymolysis
Authors:Peng, Lei (1); Ma, Haile (1); He, Ronghai (1); Qu, Wenjuan (1); Luo, Lin (1)
Author affiliation:(1) Key Laboratory for Physical Processing of Agricultural Products of Jiangsu Province, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Corresponding author:Ma, H.(mhl@ujs.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
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:In order to develop antihypertensive substances with safe and non-toxic side effects from food borne, the antihypertensive factors in garlic were selectively extracted by gradual separation and ultrasound-assisted enzymatic hydrolysis. The response surface analysis was adopted to optimize the conditions of pulsed ultrasound-assisted enzymolysis. The results showed that multi-stage isolates of garlic all hah certain inhibitory activity of ACE (Angiotensin converting enzyme), in which direct enzymolysis hydrolysates of garlic power had the best antihypertensive effect. By the response surface analysis, under the conditions of substrate concentration 8% and the pulsed ultrasound on-time 3 s and off-time 2 s, the optimum parameters of ultrasonic treatment were as following: total treatment time was 72 min, temperature was 45&deg;C, pH value was 8.2. Under the optimum conditions, the ACE inhibitory rate of hydrolysates was 67.78%, and the IC<inf>50</inf> (half inhibitory concentration) value was 7.57 mg/ml. The IC<inf>50</inf> value was decreased by 45.03% compared to that using the traditional enzymolysis (without ultrasound treatment), the activity of products from the ultrasound-assisted enzymatic hydrolysis was greatly improved. Garlic ACE inhibitory factor was used for SHR (spontaneously hypertensive rats) test. When the gavage was done for 3 h with the recommended dose of 150 mg/kg, the blood pressure of SHR droped 18.8 mmHg.
Number of references:20
Main heading:Ultrasonics
Controlled terms:Agricultural products - Blood pressure - Enzymatic hydrolysis - Enzymes - Optimization - Surface analysis
Uncontrolled terms:ACE-inhibitory - Angiotensin-converting enzyme - Antihypertensive effect - Antihypertensive factor - Enzymolysis - Garlic - Inhibiting factors - Inhibitory activity - Inhibitory concentration - Multi-stage  - Optimum conditions - Optimum parameters - pH value - Pulsed ultrasounds - Response surface analysis - Side effect - Spontaneously hypertensive rats - Substrate concentrations - Treatment time - Ultrasonic treatments  - Ultrasound treatments
Classification code:921.5 Optimization Techniques - 821.4 Agricultural Products - 804.1 Organic Compounds - 951 Materials Science - 753.1 Ultrasonic Waves - 461.2 Biological Materials and Tissue Engineering - 423 Non Mechanical Properties and Tests of Building Materials - 461.9 Biology
DOI:10.3969/j.issn.1002-6819.2012.z1.056
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 23>

Accession number:20122815240814
Title:Experimental study on technical parameters of raking and conveying device of corn harvester
Authors:Geng, Duanyang (1); Zhang, Daolin (1); Li, Qinghua (1); Diao, Peisong (1)
Author affiliation:(1) School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255000, China
Corresponding author:Zhang, D.
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:45-49
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:Aimed to the problem of corn leakage picking, which was caused by raking and conveying device in the process of corn harvest, the influence of both the way of harvest in row and the height of raking finger on the plant down rate was studied in the paper. The results showed that the harvesting way combining the harvest in middle row with high raking location of raking finger could effectively decrease the plant down rate and reduce the spike leakage loss for 3-row of self-propelled corn harvester. The deviation between plant row and the snapping rolls of outside of corn harvester could be decreased from 26 to 13 cm when the harvester with group distance between snapping rolls of 68 cm was experimented on the row distance of corn plant of 55 cm, and the plant down rate could be further decreased to 1% when the raking finger height was up to 40-45 cm.
Number of references:18
Main heading:Harvesters
Controlled terms:Combines - Experiments - Harvesting - Optimization
Uncontrolled terms:Corn - Corn harvesters - Corn plant - Experimental studies - Leakage loss - Plant broken rate - Raking and conveying device - Row distance
Classification code:821.1 Agricultural Machinery and Equipment - 821.3 Agricultural Methods - 901.3 Engineering Research - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.z1.008
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 24>

Accession number:20122815240866
Title:Effects of pre-heating treatment on enzymolysis characteristics of sweet potato protein
Authors:Zhang, Miao (1); Mu, Taihua (1)
Author affiliation:(1) Division of Fruit and Vegetable Processing, Institute of Agro-Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Corresponding author:Mu, T.(mutaihua@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:356-362
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 effects of pre-heating temperature and time on enzymolysis characteristics of sweet potato protein by Alcalase was investigated. The single-factor experiments and response surface methodology (RSM) were applied to determine the pre-heating treatment parameters for the enzymatic hydrolysis by Alcalase. The regression models of the degree of hydrolysis (DH) and trichloroacetic acid-nitrogen solubility index (TCA-NSI) were established between impact factors and indexes. The validity of the models and interactions of impact factors were analyzed. The results showed that the effects of pre-heating treatment on DH and TCA-NSI of sweet potato protein was significant (P&lt;0.05), and the optimum pre-heating treatment conditions were obtained as follows: temperature 92&deg;C, time 13 min. Under the optimized conditions, DH and TCA-NSI were 26.32% and 84.33%, respectively. Compared with the direct hydrolysis of native sweet potato protein, DH and TCA-NSI under the optimum pre-heating treatment parameters showed increases of 15.89% and 53.37%, respectively.
Number of references:29
Main heading:Heating
Controlled terms:Enzymatic hydrolysis - Enzymes - Hydrolysis - Proteins - Regression analysis - Solubility
Uncontrolled terms:Alcalase - Degree of hydrolysis - Direct hydrolysis - Enzymolysis - Impact factor - Optimized conditions - Regression model - Response surface methodology - Sweet potato - Treatment conditions  - Treatment parameters - Trichloroacetic acid-nitrogen solubility index (TCA-NSI)
Classification code:643.1 Space Heating - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 804.1 Organic Compounds - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2012.z1.060
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 25>

Accession number:20122815240856
Title:Effects of Chinese herbal medicine-starch-chitosan composite coating on fresh-keeping of ponkan
Authors:Ren, Yanfang (1); Wang, Simeng (1); He, Junyu (1); Long, Linglu (2); Wang, Qiyong (2); Long, Dengkai (2)
Author affiliation:(1) College of Agriculture, Guizhou University, Guiyang, Guizhou 550025, China; (2) Fruits Development Corporation of Jinping General Company of Fruit Industry, Jinping, Guizhou 556700, China
Corresponding author:Ren, Y.(yanfangren@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:300-305
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To explore possibilities of using edible film as a substitute for chemical preservation and bagging, effects of fresh-keeping and physiological characteristics of Chinese herbal medicine-starch-chitosan film on citrus fruits (Citrus reticulata cv. ponkan) were investigated. The results showed that composite coating significantly decreased the disease index of citrus fruits and kept a higher percentage of healthy fruit, compared with bagging treatment. However, no difference was found between composite coating and chemical preservation during storage period of citrus fruits. Compared with bagging treatment, the percentage of healthy fruit of composite coating was increased by 20.0% at storage of 90 days, but the disease index was decreased by 50.0%. Composite coating could reduce the loss of vitamin C and titratable acid contents. Composite coating significantly enhanced the activity of catalase and decreased activities of peroxidase and polyphenol oxidase and the accumulation of malondialdehyde. After storage for 90 days, catalase activity of composite coating was 2.2 times as much as that of bagging treatment. Peroxidase and polyphenol oxidase activities and malondialdehyde content were 60.9%, 80.7% and 76.7% of bagging treatment, respectively. Except from peroxidase activity, there was no marked difference on catalase and polyphenol oxidase activities and malondialdehyde content between composite coating and chemical preservation during the storage period. The cost of processing one kilogram of ponkan was 0.16 Yuan. These results suggest that composite coating not only has the same effects on disease resistance and delaying senescence as chemical preservation, but also it gives better fruit quality than chemical preservation. Therefore, composite coating could be used as a substitute for chemical preservation and bagging preservation.
Number of references:21
Main heading:Composite coatings
Controlled terms:Aldehydes - Chitosan - Citrus fruits - Diseases - Energy storage - Fruits - Physiology - Plant extracts - Starch
Uncontrolled terms:Catalase activity - Chinese herbal medicines - Disease index - Disease resistance - Edible films - Fruit quality - Malondialdehyde - Peroxidase activities - Physiological characteristics - Polyphenol oxidase  - Ponkan - Storage periods - Titratable acid - Vitamin C
Classification code:461 Bioengineering and Biology - 702 Electric Batteries and Fuel Cells - 804.1 Organic Compounds - 813.2 Coating Materials - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2012.z1.050
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 26>

Accession number:20122815240833
Title:Multi-spectral and SAR wavelet fusion based on ARSIS strategy
Authors:Li, Weiguo (1); Jiang, Nan (1); Xiong, Shiwei (1)
Author affiliation:(1) Institute of Economy and Information, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China; (2) School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
Corresponding author:Li, W.(jaaslwg@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:158-163
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:Because of cloudy and rainy weather in south China, optical remote sensing images often can't be obtained easily. With the regional trial results in Baoying, Jiangsu province, the fusion model and effect of ENVISAT/SAR and HJ-1A satellite multispectral remote sensing images were explored in this paper. Based on the ARSIS strategy, using the wavelet transform and the interaction between the band structure models (IBSM), ENVISAT satellite SAR and the HJ-1A satellite CCD images wavelet decomposition, and low/high frequency coefficient reconstruction were progressed, and the fusion images through the inverse wavelet transform were obtained. In the light of low and high-frequency images have different characteristics in different areas we took different fusion rules which can enhance the integration process of self-adaptive. the PCA transformation, IHS transformation and other traditional methods were compared by subjective and the corresponding quantitative evaluation. The bands and NDVI values around the fusion with GPS samples were extracted, analyzed and the fusion effect was explained. The results showed that the spectral distortion of wavelet fusion, IHS transform, PCA transform images were 0.1016, 0.3261 and 1.2772, respectively and entropy were 14.7015, 11.8993 and 13.2293, respectively, the wavelet fusion was the highest. The method of wavelet maintained good spectral capability, and visual effects while improved the spatial resolution, the information interpretation effect was much better than other two methods.
Number of references:23
Main heading:Image fusion
Controlled terms:Geodetic satellites - Image reconstruction - Information fusion - Remote sensing - Synthetic aperture radar - Wavelet decomposition - Wavelet transforms
Uncontrolled terms:ARSIS strategy - Band-structure model - CCD images - ENVISAT - ENVISAT satellite - Frequency coefficient - Fusion image - Fusion model - Fusion rule - High frequency HF  - IHS transformation - IHS transforms - Information interpretation - Integration process - Inverse wavelet transforms - Jiangsu province - Multi-spectral - Multispectral images - Multispectral remote sensing image - Optical remote sensing  - Quantitative evaluation - SAR Images - Self-adaptive - South China - Spatial resolution - Spectral distortions - Visual effects - Wavelet fusion
Classification code:405.3 Surveying - 716.2 Radar Systems and Equipment - 723.2 Data Processing and Image Processing - 731.1 Control Systems - 903.1 Information Sources and Analysis - 921.3 Mathematical Transformations
DOI:10.3969/j.issn.1002-6819.2012.z1.027
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 27>

Accession number:20122815240816
Title:Order noise and its attenuation approach of engine intake system
Authors:Bian, Qiang (1); Gao, Wenzhi (1); Zhang, Jing (1)
Author affiliation:(1) State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
Corresponding author:Bian, Q.(bq19851225@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:57-62
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:On account of close relationship between the intake noise attenuation and the position of the noise reduction element, the intake noise of engine was analyzed using GT-Power. A Helmholtz resonator and a quarter wave tube were designed to reduce the intake noise of engine. In order to establish the relationships between the order noise and the position of Helmholtz resonator or quarter wave tube, the acoustic mode of the intake system were analyzed in SYSNOISE. The simulation results showed that 5 dB order noise reduction was obtained at the acoustic modal frequency when Helmholtz resonator or quarter wave tube was located at the antinodes of the acoustic mode comparing to that at the nodes.
Number of references:17
Main heading:Acoustic noise
Controlled terms:Acoustic noise measurement - Acoustic variables control - Computer simulation - Engines - Intake systems - Noise pollution control
Uncontrolled terms:Engine intake - Gt-power - Helmholtz resonators - Modal frequency - Noise attenuation - Quarter waves - SYSNOISE
Classification code:612 Engines - 631.1 Fluid Flow, General - 723.5 Computer Applications - 751.2 Acoustic Properties of Materials - 751.4 Acoustic Noise
DOI:10.3969/j.issn.1002-6819.2012.z1.010
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 28>

Accession number:20122815240838
Title:Effects of building methods on thermal properties of phase change heat storage composite for solar greenhouse
Authors:Chen, Chao (1); Li, Zhuo (1); Guan, Yong (1); Han, Yunquan (1); Ling, Haoshu (1)
Author affiliation:(1) College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
Corresponding author:Chen, C.(chenchao50@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:186-191
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:Solar storage efficiency of solar greenhouse wall during the daytime is directly related to the construction of greenhouse wall layers and thermal properties of wall materials (thermal resistance, heat capacity, density etc.). Two composite phase change heat storage wallboards (mixed block and intercalation block) building by different methods were developed in this study. Mixed block was made by directly mixing the phase change materials (PCM) with cement mortar, and intercalation block was made by intercalating PCM into two cement mortar layers. The thermal properties under charge and discharge process, and the heat transfer performance of the two structures had been studied by the comparison experiment. The results showed that, under the same charge and discharge conditions, the mixed block completed heat storage/release in 70 min, which was earlier than the intercalation block; the heat storage/release amount of mixed block was 10%/15% more than that of the intercalation block. A better thermal performance could be achieved by using the directly mixed way. The conclusion provides the reference for the scientific application of phase change thermal storage technology in solar greenhouse.
Number of references:22
Main heading:Walls (structural partitions)
Controlled terms:Cements - Composite materials - Greenhouses - Heat storage - Intercalation - Lead acid batteries - Mortar - Phase change materials - Solar buildings - Solar heating  - Thermal effects - Thermodynamic properties
Uncontrolled terms:Building methods - Cement mortars - Charge and discharge - Composite phase - Heat transfer performance - Phase Change - Phase Change Material (PCM) - Phase-change thermal storages - Scientific applications - Solar greenhouse  - Storage efficiency - Thermal Performance - Wall layers - Wall materials
Classification code:951 Materials Science - 811 Cellulose, Paper and Wood Products - 801.4 Physical Chemistry - 702.1.2 Secondary Batteries - 643.1 Space Heating - 641 Heat and Mass Transfer; Thermodynamics - 531 Metallurgy and Metallography - 421 Strength of Building Materials; Mechanical Properties - 415 Metals, Plastics, Wood and Other Structural Materials - 414.3 Mortar (Before 1993, use code 412) - 412.1 Cement - 402.1 Industrial and Agricultural Buildings - 402 Buildings and Towers
DOI:10.3969/j.issn.1002-6819.2012.z1.032
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 29>

Accession number:20122815240809
Title:Design and experiment of piezoelectric type vibration air-suction precision seeder with holey tray
Authors:Chen, Shufa (1); Zhang, Shiping (1); Li, Yaoming (2)
Author affiliation:(1) Key Laboratory of Modern Agricultural Equipment and Technology, Min. of Edu. and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China; (2) Huaihai Institute of Technology, Lianyungang, 222005, China
Corresponding author:Chen, S.(csf7012@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:15-20
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:On the basis of the combined seeding mode of piezoelectric vibration and air-suction, a new precision seeder was designed for seeding precisely the small size of seeds of trees, flowers, or some vegetables, etc. The structure, drive system and parameters of piezoelectric vibration table were designed, based on converse piezoelectric effect, the micro-displacement produced by piezoelectric actuator were amplified by amplification mechanism, then the seed tray vibration was driven, the internal friction between seeds was overcome and the boiling movement beneficial to seed suction was produced. The seed disk was designed only at 1-2 rows of sucking width with lightweight material and narrow structure, so the suction seed rate increased greatly. Experimental results showed that vibration amplitude was more than 1.31 mm, vibration frequency was 13-55 Hz with adjustable frequency width (the resonant frequency is 25Hz), and the suction seed rate of the precise seeder was more than 98% with vibration intensity of 1.4-1.7. It can meet the precise seeding demands.
Number of references:20
Main heading:Piezoelectricity
Controlled terms:Design - Experiments - Natural frequencies - Phase transitions - Piezoelectric actuators - Piezoelectric devices - Thermal processing (foods)
Uncontrolled terms:Adjustable frequency - Amplification mechanism - Converse piezoelectric effects - Drive systems - Lightweight materials - Microdisplacement - Piezoelectric vibration - Precise seeding - Precision seeder - Seed rate  - Seed trays - Vibration amplitude - Vibration frequency - Vibration intensity
Classification code:901.3 Engineering Research - 822.2 Food Processing Operations - 801.4 Physical Chemistry - 732 Control Devices - 715 Electronic Equipment, General Purpose and Industrial - 714 Electronic Components and Tubes - 711.1 Electromagnetic Waves in Different Media - 708.1 Dielectric Materials - 708 Electric and Magnetic Materials - 704 Electric Components and Equipment - 408 Structural Design
DOI:10.3969/j.issn.1002-6819.2012.z1.003
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 30>

Accession number:20122815240812
Title:Numerical simulation on resistance reduction of soil vibratory tillage using ALE equation
Authors:Jiang, Jiandong (1); Gao, Jie (1); Zhao, Yingdi (1); Willem, Hoogmoed (2); Zhang, Libin (1)
Author affiliation:(1) Key Laboratory of E and M, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China; (2) Farm Technology Group, Wageningen University, Wangeningen, the Netherlands 6700AH, Netherlands
Corresponding author:Zhang, L.(lbz@zjut.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:33-38
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 method of soil vibration cutting resistance reduction was proposed for deep-loosing. Example for the compression soil of Zhejiang Longjing tea garden, a soil static cutting mechanics model and soil-cutting yield failure mode were studied in this paper. According to the interaction process of deep shovel-soil, the static cutting resistance changes of deep shovel was analyzed by 3D finite element model with algorithm of ALE. Furthermore, the influences of soil-cutting resistance on the vibration source type, the vibration frequency and vibration amplitude were also studied. As an example of a compaction soil in tea garden, the influences of soil resistance reduction with difference vibration cutting conditions was studied. It showed that the soil resistance reduced with the vibration frequency and amplitude increased, and soil cutting resistance was up to minimum. Case analysis showed that with the vibration frequency of 25 Hz, and the amplitude of 14 mm, the soil cutting resistance could be reduced by 22%. So, above-mentioned studies provided a design basis of soil cutting resistance reduction with vibration exciting, and parameter optimization of tillage impressed vibration source.
Number of references:25
Main heading:Geologic models
Controlled terms:Agricultural machinery - Agriculture - Compaction - Computer simulation - Cutting - Shovels - Soils
Uncontrolled terms:3D finite element model - Case analysis - Cutting mechanics - Cutting resistance - Interaction process - On-resistance - Parameter optimization - Resistance reduction - Soil cuttings - Soil vibrations  - Tillage - Vibration amplitude - Vibration cutting - Vibration frequency - Vibration sources - Vibration-exciting - Zhejiang
Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control - 723.5 Computer Applications - 604.1 Metal Cutting - 821.1 Agricultural Machinery and Equipment - 536.1 Powder Metallurgy Operations - 481.1 Geology - 405.1 Construction Equipment - 483.1 Soils and Soil Mechanics
DOI:10.3969/j.issn.1002-6819.2012.z1.006
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 31>

Accession number:20122815240851
Title:Vacuum drying characteristics and technological parameters optimization of maca
Authors:Zhang, Hong (1); Zheng, Hua (1); Yu, Liansong (1); Feng, Ying (1); Chen, Xiaoming (1); Li, Kai (1)
Author affiliation:(1) Engineering and Technology Center of Cultivation and Utilization of Special Forest Bio-Resources, Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224, Yunnan, China
Corresponding author:Chen, X.(xmchen@vip.km169.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:267-272
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To preparing dried maca (Lepidium meyenii Walp.), conventional drying were taken into the experiments, such as atmospheric drying, vacuum drying and hot-air drying. Drying properties and drying kinetic models of maca was studied. Three methods applied for maca drying were evaluated according to total color value. For the optimization of maca vacuum drying, response surface method (RSM) was performed to achieve the best drying conditions as 43 kPa for pressure and 75&deg;C for temperature. After the optimum RSM operating and verifying, maca was dried into the product with total color value of 7.4, which was well matched other domestic standards for similar products. Therefore, it provide a reference to the producers for the dry-making of maca roots.
Number of references:22
Main heading:Drying
Controlled terms:Enzyme kinetics - Models - Optimization - Surface properties - Vacuum
Uncontrolled terms:Color values - Conventional drying - Domestic standards - Drying condition - Drying kinetic - Hot air drying - Maca - Response surface - Response surface method - Technological parameters optimization  - Vacuum drying
Classification code:633 Vacuum Technology - 642.1 Process Heating - 802.2 Chemical Reactions - 902.1 Engineering Graphics - 921.5 Optimization Techniques - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.z1.045
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 32>

Accession number:20122815240839
Title:Property of microwave pyrolysis of municipal solid waste
Authors:Xu, Qing (1); Ling, Changming (1); Li, Jun (1)
Author affiliation:(1) Engineering College, Guangdong Ocean University, Zhanjiang 524025, China; (2) School of Electric Power, South China University of Technology, Guangzhou 510640, China
Corresponding author:Xu, Q.(xuqing-zj@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
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:To understand the property of microwave pyrolysis of municipal solid waste, microwave pyrolyzer made by our lab was introduced in this study. The effects of microwave pyrolysis temperature on pyrolysis products, regulation of gas yield and the composition of the gas were investigated. The results showed that the temperature of municipal solid waste under microwave pyrolysis was quickly increased. Microwave pyrolysis of municipal solid waste exhibited short pyrolysis time. The solid component was decreased from 55% to 26%, the liquid component was increased from 21.52% to 27.83%, the pyrolytic gas component was increased from 12% to 35% with microwave pyrolysis temperature increased from 400&deg;C to 600&deg;C. The gaseous products were composed of hydrogen, carbon monoxide, methane, carbon dioxide and hydrocarbon, et al. Methane content was increased with the increasing of temperature. The content of hydrocarbon reached at the top in 500&deg;C. Hydrogen content was low in 450&deg;C, and quickly improved with the temperature above 550&deg;C. Those results obtained from microwave pyrolysis provide foundational data for the new utilization of municipal solid waste resources.
Number of references:16
Main heading:Pyrolysis
Controlled terms:Carbon dioxide - Carbon monoxide - Hydrogen - Methanation - Methane - Microwaves - Municipal solid waste - Organic compounds - Solid wastes - Temperature
Uncontrolled terms:Gas yields - Gaseous products - Hydrogen contents - Liquid components - Methane content - Microwave pyrolysis - Property - Pyrolysis products - Pyrolysis time - Pyrolytic gas  - Solid components
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal - 641.1 Thermodynamics - 711 Electromagnetic Waves - 802.2 Chemical Reactions - 804 Chemical Products Generally - 811 Cellulose, Paper and Wood Products
DOI:10.3969/j.issn.1002-6819.2012.z1.033
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 33>

Accession number:20122815240841
Title:Evolutive characteristics of cold damage of economic forest fruits in Guangxi during 1961 to 2008
Authors:Kuang, Zhaomin (1); Pan, Xuebiao (1); Li, Li (2); Rong, Jun (3); He, Yan (2); Luo, Yongming (2); Ou, Zhaorong (2); Zhang, Xingqing (2); Chen, Chaoquan (4); Meng, Cuili (2)
Author affiliation:(1) College of Resources and Environmental Science, China Agricultural University, Beijing 100193, China; (2) Guangxi Meteorological Disaster Mitigation Institute, Nanning 530022, China; (3) Guangxi Meteorological Equipment Center, Nanning 530022, China; (4) Modern Education Technology Center, Guilin University of Technology, Guilin 541004, China
Corresponding author:Pan, X.(panxb@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:201-208
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:Analyzing the evolutive characteristics of cold damage under climate change is important to provide theorical evidences for instituting policies on issue of disaster prevention and mitigation. Cold damage index (HI) was established based on five climatic factors, such as the extreme minimum air temperature, the accumulative days below 5&deg;C, the accumulated cold harmful temperature with daily minimum air temperature below 5&deg;C, the maximum amplitude of daily temperature and accumulative days with daily precipitation above 5 mm. The weather data of 77 meteorological stations from 1961 to 2008 in Guangxi was analysed. The frequency, intensity, the ratio of 77 stations and inter-decadal variations of cold damage of economic forest fruits in Guangxi were studied using HI. The spatial distribution of cold damage intensity was generated by geographic information system (GIS). The results showed that the frequency, ratio of existing station and the intensity of cold damage were more serious in 1960s and 1970 s, than that in 1990s; While it was increased in 2001 to 2008 compared with 1990 s; overall, it had a slight decreasing from 1961 to 2008. The commercial growing region of economic forest fruits in Guangxi, where the cold damage intensity is less than 0.24, is distributed in the south of Guangxi, including CangWu, MengShan, LaiBin, DuAn, BaMa, BaiSe, etc.
Number of references:23
Main heading:Fruits
Controlled terms:Atmospheric temperature - Climate change - Cold effects - Damage detection - Disaster prevention - Forestry - Geographic information systems - Meteorology
Uncontrolled terms:Air temperature - Climatic factors - Daily temperatures - Damage index - Damage intensity - Evolution - Growing regions - Guangxi - Interdecadal - Maximum amplitude  - Meteorological station - Weather data
Classification code:821.4 Agricultural Products - 821.0 Woodlands and Forestry - 723.3 Database Systems - 914.1 Accidents and Accident Prevention - 443.1 Atmospheric Properties - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 443 Meteorology
DOI:10.3969/j.issn.1002-6819.2012.z1.035
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 34>

Accession number:20122815240865
Title:Effects of different methods on polyphenols extraction from walnut green husk
Authors:Zhao, Guojian (1); Wang, Xiangdong (1); Wang, Huan (1)
Author affiliation:(1) College of Engineering, Shanxi Normal University, Linfen 041004, China
Corresponding author:Zhao, G.(zgjian123@tom.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:351-355
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 research the influence of different methods on polyphenols extraction from walnut green husk, ethanol was taken as extraction solvent, and the effects of different methods (solvent extraction, microwave extraction, ultrasonic extraction and sodium hexametaphosphate extravtion) on polyphenols extraction from walnut green husk were researched. The results showed that the yield of SHMP assisted microwave extraction was found to be superior to other methods, its yield was 4.01 mg/g. The yield of SHMP assisted microwave extraction was 73.4% higher than solvent extraction. Therefore, SHMP assisted microwave extraction method is a kind of new, more efficient polyphenols extraction method from walnut green husk.
Number of references:20
Main heading:Microwaves
Controlled terms:Ethanol - Extraction - Organic solvents - Phenols - Sodium - Solvent extraction - Ultrasonics
Uncontrolled terms:As extraction - Extraction method - Microwave extraction - Polyphenols - SHMP - Sodium hexametaphosphate - Ultrasonic extraction - Walnut green husk
Classification code:549.1 Alkali Metals - 711 Electromagnetic Waves - 753.1 Ultrasonic Waves - 802.3 Chemical Operations - 804.1 Organic Compounds
DOI:10.3969/j.issn.1002-6819.2012.z1.059
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 35>

Accession number:20122815240823
Title:Effects of drip irrigation strategy on cotton root distribution and water use efficiency
Authors:Liu, Meixian (1); Yang, Jingsong (1); Li, Xiaoming (1); Liu, Guangming (1); Yu, Mei (2); Wang, Jin (3)
Author affiliation:(1) State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; (2) Water Conservancy Bureau of Yuhuatai, Nanjing, 210012, China; (3) Wulanwusu Agro-Meteorological Experiment Station, Shihezi 832021, China
Corresponding author:Yang, J.(jsyang@issas.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:98-105
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 effects of different drip irrigation parameters on crop growth and transportation of soil water and salinity are important for designing scientific irrigation strategies and rational utilization of water resources in arid area. Drip tape arrangement and irrigation water quality are two important factors of mulched drip irrigation. In order to investigate their influences on distribution of soil salinity and roots, and water use efficiency, field experiment was conducted in the north of Xinjiang in 2010. Two drip tape arrangements (a tap for four lines, Ms; a tap for two lines, Md) and three levels of irrigation water quality (0.24 dS/m, 4.68 dS/m, 7.42 dS/m) were designed. The results showed that drip tape arrangement played an important role in change of soil salinity and cotton roots distribution. Under the same condition of water quality, Ms reduced the salinity accumulation in root zone, and lower salinity concentration was observed in 0 ~ 40 cm soil layer of Ms treatment than that in Md treatment. Cotton roots mainly distributed in 0~40 cm layer in all the treatments. Stronger stress on cotton root growth was observed in Md treatment than in Ms treatment under irrigated with the same saline water. However, the saline water only affected the distribution area where the cotton root density was higher than 0.5 kg/m³. The cotton water consumption appeared no significant relationship with the drip tape arrangement under the same irrigation amout, and decreased with the increase of irrigation salinity. Moreover, the saline water reduced the cotton yield but improved the water use efficiency (WUE); saline water irrigation reduced both the WUE and cotton yield in Md.
Number of references:19
Main heading:Water supply
Controlled terms:Arid regions - Cotton - Efficiency - Irrigation - Saline water - Salinity measurement - Soil moisture - Soil pollution - Subirrigation - Water quality  - Water resources - Water treatment
Uncontrolled terms:Arid area - Cotton roots - Cotton yield - Crop growth - Distribution area - Drip irrigation - Drip tape arrangement - Field experiment - Irrigation water quality - Root distribution  - Root zone - Soil layer - Soil salinity - Soil water - Two-line - Water consumption - Water use efficiency - Xinjiang
Classification code:821.4 Agricultural Products - 821.3 Agricultural Methods - 483.1 Soils and Soil Mechanics - 913.1 Production Engineering - 446.1 Water Supply Systems - 445.1 Water Treatment Techniques - 444 Water Resources - 445.2 Water Analysis
DOI:10.3969/j.issn.1002-6819.2012.z1.017
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 36>

Accession number:20122815240849
Title:Effects of drying conditions on quality of brittle polyporus frondosus slice
Authors:Chang, Hong (1); Zhou, Jiahua (1); Zhao, Zhiyuan (1); Zhao, Liqin (2); Xie, Min (1)
Author affiliation:(1) Institute of Agricultural Integrated Development, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China; (2) Inner Mongolia Agricultural University, Huhhot 010018, China
Corresponding author:Chang, H.(changhongch2008@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:256-261
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To investigate the effects of drying conditions on the quality of polyporus frondosus, fuzzy mathematic was used in evaluating the polyporus frondosus sensual quality. The texture and rehydration ratio of polyporus frondosus prepared by vacuum freeze-drying and hot air -drying were assayed periodically. The results showed that the optimized conditions of vacuum freeze-drying were as follow: the vacuum degree 20 Pa, the board temperature 50&deg;C, the thickness of materials 5 mm, time 12 h, and the optimal hot air-drying conditions were as follow: temperature 100&deg;C, time 11h, and the thickness of materials 16 mm. The shape and color of polyporus frondosus were kept well after vacuum freeze-drying, which were better than those of hot-air drying. The value of vacuum freeze-drying and hot air-drying by fuzzy mathematic evaluating was 0.5 and 034, divided into good and middle respectively.
Number of references:20
Main heading:Vacuum
Controlled terms:Dehydration - Drying - Low temperature drying - Optimization - Quality control - Solar dryers - Technology - Vacuum technology
Uncontrolled terms:Drying condition - Fuzzy mathematics - Hot air - Hot air-drying - Optimized conditions - Polyporus frondosus - Rehydration ratio - Vacuum degree
Classification code:633 Vacuum Technology - 802 Chemical Apparatus and Plants; Unit Operations; Unit Processes - 901 Engineering Profession - 913.3 Quality Assurance and Control - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.z1.043
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 37>

Accession number:20122815240843
Title:Effect of ASOC on diversity of arbuscular mycorrhizal fungi in alpine steppe of north Tibet
Authors:Cai, Xiaobu (1); Peng, Yuelin (2); Gai, Jingping (1); Zhang, Junling (1)
Author affiliation:(1) College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (2) Department of Resources and Environmental Sciences, Tibet Agricultural and Animal Husbandry College, Linzhi 860000, China
Corresponding author:Zhang, J.(junlingz@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:216-223
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:Spore identification technique was employed to understand the effect of active soil organic carbon (ASOC) on the biodiversity and colonization indices of arbuscular mycorrhizal fungi (AMF). The results showed that within ASOC mass fraction ranges, Glomus had significant effect on community composition of AMF and the effect was enhanced with the increase of ASOC. Dominant species (in particular some co-occurring dominant species played an important role in community structure of AMF. ASOC mass fraction was positively correlated with spore density, and the colonization intensity and arbuscule richness were increased at the lower and intermediate ASOC mass fractions. The overall effect of AMF was great at lower ASOC level (0.81~1.40 g/kg) Our results indicate the application of AMF may have great potential in alpine steppe at lower ASOC level. This provides important information for developing suitable agricultural engineering techniques and methods to reinforce the effect of ASOC on biodiversity and infection intensity of AMF, and to increase the synergetic effects among multiple mycorrhizal species and dominant species. The result is of great significance for the sustainability of the alpine grasslands.
Number of references:28
Main heading:Fungi
Controlled terms:Agricultural engineering - Biodiversity - Organic carbon - Soils
Uncontrolled terms:Active soils - Alpine steppe - Arbuscular mycorrhizal fungi - Community composition - Community structures - Dominant species - Identification techniques - Mass fraction - North Tibet - Synergetic effect
Classification code:454 Environmental Engineering - 461 Bioengineering and Biology - 461.9 Biology - 483.1 Soils and Soil Mechanics - 804.1 Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.3969/j.issn.1002-6819.2012.z1.037
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 38>

Accession number:20122815240807
Title:Effects of land supervision on cultivated land requisition-compensation balance in China
Authors:Zhao, Yuntai (1); Huang, Xianjin (1); Zhong, Taiyang (1); Zhang, Xiaoling (3); Du, Guanyin (4); Zhang, Bo (5)
Author affiliation:(1) School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China; (2) Jiangsu Engineering Research Center of Land Consolidation and Rehabilitation, Nanjing 210093, China; (3) China Land Surveying and Planning Institute, Beijing 100035, China; (4) Office of State Land Supervision, Beijing 100812, China; (5) Shenyang Bureau of State Land Supervision, Shenyang 110002, China
Corresponding author:Huang, X.(hxj369@nju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:1-7
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 purpose of this study is to analyze whether the implement of land supervision is effective in cultivated land requisition-compensation and to assess the size of the effects. Based on province-level panel data from 2003 to 2008, random effects Tobit model was employed. The results show that: 1) land supervision plays a positive role in cultivated land requisition-compensation. The growth of every percentage point in special land supervision coverage will bring about nearly 1.47% growth in cultivated land requisition-compensation. The growth of every percentage point in regular land supervision coverage will bring about nearly 5.59% growth in cultivated land requisition-compensation. 2) The implement of special land supervision promotes cultivated land compensation. Cultivated land quantity respectively increases 19339.39 hm² and 3118.81 hm² in 2007 and 2008, accounting for 9.88% and 1.36% of the total area of cultivated land compensation. Regular land supervision works effectively as well to cultivated land compensation in the current year. Compensatory cultivated land scale reaches 29106.36 hm². It accounts for 12.68% of the total area of cultivated land compensation. 3) Land supervision accelerates the process of cultivated land compensation. The area of cultivated land compensation is 19339.39 hm² and 32225.17 hm² respectively, accounting for 9.88% and 14.03% of the total area of cultivated land compensation in 2007 and 2008.
Number of references:21
Main heading:Land use
Controlled terms:Agricultural engineering - Agriculture - Models - Systems analysis
Uncontrolled terms:Cultivated lands - Land supervision - Panel data - Percentage points - Random effects
Classification code:403 Urban and Regional Planning and Development - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 902.1 Engineering Graphics - 961 Systems Science
DOI:10.3969/j.issn.1002-6819.2012.z1.001
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 39>

Accession number:20122815240821
Title:Influence of shapes of grooved polishing tool on hydrodynamic suspension polishing
Authors:Ji, Shiming (1); Yu, Jiafeng (1); Hong, Tao (1); He, Jianmin (1)
Author affiliation:(1) Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Edu., Zhejiang University of Technology, Hangzhou, 310014, China
Corresponding author:Hong, T.(thong@zjut.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:87-91
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To study the influence of polishing tool shape on the hydrodynamic suspension polishing, Simulation and experimental research of hydrodynamic pressure and material removel were carried out based on cylindrical and grooved polishing tools using hydrodynamic suspension polishing system. In the hydrodynamic suspension polishing system, the lubricated parallel contact consisted of a high-speed rotating polishing tool and a workpiece. Using the CFD simulated the fluid between the polishing tool and the workpiece, the results showed that grooved polishing tool could effectively improve hydrodynamic slurry pressure during the polishing process, and the distribution of fluid velocity were similar. The machinability of hydrodynamic suspension polishing proved that the roughness and the material removal rate were better by the grooved polishing tool than cylindrical polishing tool in the same polishing condition; the roughness could low relative to 21 nm.
Number of references:15
Main heading:Polishing
Controlled terms:Computer simulation - Hydrodynamics - Roughness measurement - Slurries - Suspensions (components)
Uncontrolled terms:Experimental research - Fluid velocities - High-speed - Hydrodynamic pressure - Material removal rate - Polishing processs - Polishing tool - Slurry velocities - Work pieces
Classification code:723.5 Computer Applications - 631.2 Hydrodynamics - 604.2 Machining Operations - 804 Chemical Products Generally - 601.2 Machine Components - 524 Solid Fuels - 406 Highway Engineering - 533 Ore Treatment and Metal Refining
DOI:10.3969/j.issn.1002-6819.2012.z1.015
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 40>

Accession number:20122815240819
Title:Numerical simulation of effects of transport enclosure structure on flow field
Authors:Guo, Jiaming (1); L&#252;, Enli (1); Lu, Huazhong (1); Yang, Songxia (1); Zeng, Zhixiong (1)
Author affiliation:(1) Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (2) College of Engineering, South China Agricultural University, Guangzhou 510640, China
Corresponding author:Guo, J.(jming_guo@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:74-80
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 research the influence of different refrigerated transport enclosure for the environment uniformity, 3D turbulence models of the enclosure in and out from the top and enclosure in from the top and out from the bottom and differential pressure enclosure designed by South China Agricultural University were built, and the software FLUENT, SIMPLE algorithm and wall function method was used to do numerical calculation for the three kinds of enclosure structure models when they were no-load or full load, to analyze the wind and cloud vector diagram of the airflow patterns in the structures. Through different section of comparative analysis, it showed that the flow field in differential pressure enclosure was more uniform than those in the two other structure whether it was no-load or full; The airflow field in enclosure in from the top and out from the bottom with cargo was more uniform than the airflow field in no-load and the enclosure in and out from the top; The wind speed gradient was larger, and the uniformity of flow distribution was general in the enclosure in and out from the top both no-load or full. The results have reference value for the optimal design of refrigerated transport enclosure.
Number of references:20
Main heading:Enclosures
Controlled terms:Computer simulation - Flow fields - Refrigeration - Three dimensional - Three dimensional computer graphics - Trucks - Turbulence - Turbulence models
Uncontrolled terms:Air flow fields - Airflow patterns - Comparative analysis - Differential pressures - Flow distribution - Full-load - Numerical calculation - Optimal design - Reference values - Refrigerated transport  - SIMPLE algorithm - Software FLUENT - South China - Structure models - Vector diagrams - Wall function method - Wind speed
Classification code:631.1 Fluid Flow, General - 644.4 Cryogenics - 663.1 Heavy Duty Motor Vehicles - 723.5 Computer Applications - 914 Safety Engineering
DOI:10.3969/j.issn.1002-6819.2012.z1.013
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 41>

Accession number:20122815240826
Title:Simulation of evapotranspiration in urban areas based on URMOD and validation with remote sensing data
Authors:Gao, Xuerui (1); Lu, Chuiyu (1); Qin, Dayong (1); Luan, Qinghua (1); Hu, Jian (2); Shi, Yuanzhi (3)
Author affiliation:(1) State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, 100038, China; (2) College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China; (3) State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
Corresponding author:Qin, D.(qindy@iwhr.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:117-123
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 depict the hydrological process of urban areas, Simulating Model for Urban Water Cycle (URMOD) was developed by Department of Water Resources of China Institute of Water Resources and Hydropower Research. Using this model, the evapotranspiration (ET) process of the area inside the Fourth Ring Road of Beijing was simulated in the paper. During simulating period from 2002~2005, the results of simulated ET from grass cluster, tree cluster and water surface cluster were separately 578.4, 571.2 and 1130.5 mm, while the simulated ET from impervious cluster ranged from 161.0 to 269.1 mm. By comparison of simulated values and remote sensing derived results, there was a good agreement between monthly simulated ET and monthly remote sensing derived ET. URMOD is a well-performed tool to simulate regional ET in urban areas.
Number of references:20
Main heading:Computer simulation
Controlled terms:Evapotranspiration - Hydrology - Remote sensing - Water supply
Uncontrolled terms:Department of Water Resources - Hydrological process - Remote sensing data - Ring roads - Urban areas - Urban waters - Water surface
Classification code:444 Water Resources - 444.1 Surface Water - 446.1 Water Supply Systems - 471 Marine Science and Oceanography - 723.5 Computer Applications - 731.1 Control Systems
DOI:10.3969/j.issn.1002-6819.2012.z1.020
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 42>

Accession number:20122815240818
Title:Finite element analysis on single-particle impact in abrasive flow machining
Authors:Ji, Shiming (1); Zhang, Ding (1); Tan, Dapeng (1)
Author affiliation:(1) Key Laboratory of E and M, Zhejiang University of Technology, Ministry of Education and Zhejiang Province, Hangzhou 310014, China
Corresponding author:Tan, D.(tandapeng@zjut.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:68-73
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:Several surface processing methods based on the abrasive flow were developed, taking advantage of wall effect between abrasives and processing surface to form the micro cutting, the surface machining was realized. A feasible finite element model was developed adopting ANSYS for the former processor. The abrasive flow was mainly used to process ductile material, such as metal and alloy. Take typical material of Ti-6Al-4V as target, Johnson-Cook elastic-plastic material model was established. Material failure process could be observed. The calculation results accord with Hashish model, the micro cutting was more obvious when abrasive particle impacting wall with certain injection angle. Wear increases with the impact speed increasing, and wear rate increases with impact numbers and particle diameter (&lt;200 &mu;m) increasing.
Number of references:21
Main heading:Abrasives
Controlled terms:Ductility - Finite element method - Machining - Micromachining - Surfaces - Wear of materials
Uncontrolled terms:Abrasive flow machining - Abrasive particles - Ductile materials - Elastic-plastic Material - Finite element models - Impact speed - Injection angles - Johnson-Cook - Material failures - Metal and alloys  - Micro-cutting - Particle diameters - Single particle impact - Surface machining - Surface processing - Ti-6al-4v - Wall effects - Wear rates
Classification code:421 Strength of Building Materials; Mechanical Properties - 604.2 Machining Operations - 606.1 Abrasive Materials - 921.6 Numerical Methods - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.z1.012
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 43>

Accession number:20122815240824
Title:Effect of drip fertigation on yield, water and fertilizer utilization in ginger
Authors:Liu, Hucheng (1); Xu, Kun (1); Zhang, Yongzheng (1); Sun, Jingqiang (1)
Author affiliation:(1) Key Laboratory of Horticultural Crop Biology and Germplasm Creation in Huang-Huai Region, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China
Corresponding author:Xu, K.(xukun@sdau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:106-111
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 increase yield and the utilization for water and fertilizer, the effects of different irrigation styles such as conventional irrigation without fertilization (CK0), conventional irrigation and fertilization (CK), drip fertigation (T1) and 20% reduction of fertilizer in drip fertigation (T2) on the growth as well as water and NPK utilization were analyzed in the cultivar 'Laiwu large ginger'. Compared with CK, the economical yield of ginger increased by 17.94% and 15.78%, respectively, but the biological yield of ginger in T1, T2, CK did not show significant difference. Although the absorptions of P<inf>2</inf>O<inf>5</inf> were not significantly different among T1, T2 and CK, the absorption of N, K<inf>2</inf>O in T1, T2 increased by 12.54%, 6.09% and 13.53%, 7.01% over CK, respectively. In addition, the utilization rates of N, P<inf>2</inf>O<inf>5</inf>, K<inf>2</inf>O increased by 19.85%, 12.38%, 19.66% and 37.06%, 30.66%, 37.76%, respectively, in T1, T2 compared with CK. Meanwhile, irrigation water use efficiency increased by 112.71% and 110.64%, respectively, in T1 and T2 compared with CK. The results indicated that drip fertilization favors the balanced growth of various organs of ginger. Therefore, the drip fertigation can noticeably improve the yield, the uptake and utilization rates of NPK and water use efficiency in ginger.
Number of references:24
Main heading:Food additives
Controlled terms:Fertilizers - Subirrigation - Water - Water supply
Uncontrolled terms:Drip fertilization - Drip irrigation - Ginger - Use efficiency - Utilization rates - Yield
Classification code:444 Water Resources - 446.1 Water Supply Systems - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 821.3 Agricultural Methods
DOI:10.3969/j.issn.1002-6819.2012.z1.018
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 44>

Accession number:20122815240863
Title:Experiment on dual-frequency ultrasound extraction of black rice melanin
Authors:Bi, Yongguang (1); Kong, Fansheng (1); Zhong, Hongmao (2); Li, Yongxin (1)
Author affiliation:(1) College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China; (2) South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Corresponding author:Bi, Y.(biyongguang2002@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:339-344
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To improve extraction rate of black rice melanin, dual-frequency ultrasound assisted extraction method of black rice melanin was used. Orthogonal array design was employed for investigating the effects of pH, extraction time, extraction temperature, liquid ratio, concentration of ethanol. The results showed that the impact of various factors on the black rice melanin extraction was followed by pH, concentration of ethanol, liquid ratio, extraction temperature, extraction time. The optimal conditions were as follow: pH value of 2, ultrasound time of 30 min, extraction temperature of 50&deg;C, the liquid-solid ratio of 30 mL/g, ethanol concentration of 70%. Under these conditions, average extraction rate was 6.85%. Compared to impregnation and ultrasound extraction methods, dual-frequency ultrasound assisted extraction method exhibited simple, saving time, less solvent, high extraction efficiency and less melanin.
Number of references:20
Main heading:Extraction
Controlled terms:Ethanol - Experiments - Liquids - Optimization - pH effects - Technology - Ultrasonics
Uncontrolled terms:Black rice - Dual-frequency ultrasound - Ethanol concentrations - Extraction efficiencies - Extraction method - Extraction rate - Extraction temperatures - Extraction time - Liquid solids - Melaninm  - Optimal conditions - Orthogonal array designs - Orthogonal experiment - pH value
Classification code:921.5 Optimization Techniques - 901.3 Engineering Research - 901 Engineering Profession - 931.2 Physical Properties of Gases, Liquids and Solids - 802.3 Chemical Operations - 753.1 Ultrasonic Waves - 523 Liquid Fuels - 801.1 Chemistry, General
DOI:10.3969/j.issn.1002-6819.2012.z1.057
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 45>

Accession number:20122815240827
Title:Development of measurement system for citrus LAI based on spectrum information
Authors:Wu, Weibin (1); Hong, Tiansheng (1); Li, Zhen (1); Zhang, Lijun (1); Li, Yuecheng (3); Wu, Zetao (3); Ou, Zhaoqiang (3)
Author affiliation:(1) Key Laboratory of Key Technology for South Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China; (2) Mechanical Laboratory of China Agriculture Research System, Guangzhou 510642, China; (3) College of Engineering, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Hong, T.(tshong@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:124-128
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 precision agriculture has become a research hotspot of agricultural science nowadays. How to acquire information of the plants is one of the key points and problems in precision agricultural research. This paper identified the relationships between leaf area index and spectrum data by spectral analysis, thereby achieving fast and accurate LAI measurement. The measurement system for citrus LAI based on spectrum information was divided into two main parts. One was the data acquisition device, with FieldSpec-FR and computers as its key components to collect spectral data of leaves. Another was the inversion platform, with computers, ViewSpecPro, Excel, SPSS and other software as its core to calculate the LAI of citrus leaves. Researching the features of LAI can provide crop biomass status information for precision agriculture. And the exact total leaf area and the nominal LAI values of citrus leaves can be calculated after a scanning calibration experiment. The regression results showed that the system could meet the LAI test requirement.
Number of references:21
Main heading:Agriculture
Controlled terms:Measurements - Research - Spectrum analysis
Uncontrolled terms:Citrus - LAI - Measurement system - Spectro-radiometers - Spectrum information
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921 Mathematics - 901.3 Engineering Research - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.3969/j.issn.1002-6819.2012.z1.021
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 46>

Accession number:20122815240815
Title:Analysis on minimum turning radius and maximum carrying capacity of monorail vehicles for mountain orchard
Authors:Chen, Yinqing (1); Hong, Tiansheng (1); Sun, Tongbiao (1)
Author affiliation:(1) Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, Engineering College of South China Agricultural University, Guangzhou 510642, China; (2) College of Machinery and Electronic Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
Corresponding author:Hong, T.(tshong@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:50-56
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:Both minimum turning radius and maximum carrying capacity are important parameters for designing monorail vehicles. In this paper, the structure and different terrain dynamics of monorail vehicles on the flat ground and hillside were experimented and analyzed. The result showed that the relationship of the minimum turning radius, maximum carrying capacity was affected by the size of the vehicle structure, and the mathematical formula was found. A theoretical basis for designing monorail vehicles of mountain orchards and other similar transportation machines is provided in this paper.
Number of references:18
Main heading:Vehicles
Controlled terms:Landforms - Monorails - Orchards - Turning
Uncontrolled terms:Different terrains - Mathematical formulas - Radius - Theoretical basis - Turning radius - Vehicle structures
Classification code:432 Highway Transportation - 481.1 Geology - 604.2 Machining Operations - 682.1 Railroad Rolling Stock, General - 821.3 Agricultural Methods
DOI:10.3969/j.issn.1002-6819.2012.z1.009
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 47>

Accession number:20122815240845
Title:Decision making for spatio-temporal distribution and mode selection of rural residential land consolidation
Authors:Zhou, Hua (1); Zhou, Shenglu (1); Yang, Dezhi (1); Wu, Shaohua (1)
Author affiliation:(1) The School of Geography and Ocean Science, Nanjing University, Nanjing 210093, China
Corresponding author:Zhou, S.(zhousl@nju.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:230-237
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:Spatio-temporal distribution of rural land consolidation should be considered suitable for the size of the agricultural population. Lewis turning point theory was introduced for rural land consolidation study by genetic algorithm. According to the results of rural land consolidation dominance evaluation as the turning point appears, an optimized approach was constructed. Further more, the rural land consolidation mode selection and scheduling ideas in the light of characters of study area were put forward. The results indicated that the suitable agricultural population should be retained for the needs of agricultural development during urbanizing, and the spatio-temporal arrangements of rural land consolidation and mode selection should be coordinated with this process.
Number of references:21
Main heading:Agriculture
Controlled terms:Land use - Rural areas
Uncontrolled terms:Agricultural development - Mode selection - Spatio-temporal - Spatiotemporal distributions - Study areas - Turning points - Zhetang Konggang new town
Classification code:403 Urban and Regional Planning and Development - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.3969/j.issn.1002-6819.2012.z1.039
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 48>

Accession number:20122815240844
Title:Toxicity effects of polyacrylamide to earthworm (Eisenia fetida)
Authors:Guo, Feifan (1); Zhang, Qin (1); Sun, Zhenjun (1); Ma, Fenglei (3)
Author affiliation:(1) College of Resource and Environment Sciences, China Agricultural University, Beijing 100093, China; (2) Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohoot, 010018, China; (3) Seminis Seeds (Beijing) Co. Ltd., Beijing, 101407, China
Corresponding author:Sun, Z.(sun108@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:224-229
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:Polyacrylamide is commonly used as a water-treatment agent in China and abroad, it may bring a potential threat to microorganisms when it is discharged into natural environments. To obtain toxicity information of polyacrylamide (PAM) and acrylamide (AM), the acute and sub-acute tests were conducted with specimens of Eisenia fetida using OECD (Organization for Economic Co-operation and Development) artificial soil in this study. The results showed that LC<inf>50</inf> of PAM and AM were more than 2000 and 164.01 mg/kg, respectively, the toxicity of PAM was much lower than AM. There was no significant effect of PAM on the survival and growth of E. fetida in acute and sub-acute toxicity tests; while at the concentration of 100 mg/kg AM, it showed a significant toxicity effect (P&lt;0.05). Earthworm reproduction rate was significantly affected by both PAM and AM (P&lt;0.05). So, polyacrylamide residual in sewage sludge had potential ecological risk.
Number of references:29
Main heading:Toxicity
Controlled terms:Amides - Environmental engineering - International cooperation - Pesticides - Polyacrylates - Sewage sludge - Water treatment
Uncontrolled terms:Acrylamides - Artificial soils - Earthworm reproduction - Eisenia fetida - Growth inhibition - LC<inf>50</inf> - Natural environments - Organization for economic co-operation and development - Polyacrylamides - Potential ecological risk  - Potential threats - Survival and growth - Toxicity test
Classification code:815.1.1 Organic Polymers - 804.1 Organic Compounds - 804 Chemical Products Generally - 912 Industrial Engineering and Management - 803 Chemical Agents and Basic Industrial Chemicals - 452.2 Sewage Treatment - 445.1 Water Treatment Techniques - 454 Environmental Engineering
DOI:10.3969/j.issn.1002-6819.2012.z1.038
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 49>

Accession number:20122815240861
Title:Kinetics and thermodynamics characteristics of microwave assisted extraction of anthocyanins from grape peel
Authors:Li, Yuan (1); Xu, Xiayang (1); Wang, Junhan (1); Wang, Zhengfu (1); Chen, Fang (1)
Author affiliation:(1) National Engineering Research Centre for Fruits and Vegetables Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Chen, F.(chenfangch@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:326-332
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 expand the application of microwave assisted extraction (MAE) in food industry, the effects of MAE of anthocyanins from grape peel was investigated, and the related kinetics and thermodynamics were evaluated. The results showed that the citric acid concentration, liquid-to-solid ratio (R<inf>L/S</inf>), extraction time and microwave power level have a significant influence on the anthocyanins yield. The anthocyanins yield (172.99 mg/100 g) with the higher concentration of citric acid solution (1.00 mol/L) is 4 times larger than that (43.48 mg/100 g) in the lower concentration solution (0.02 mol/L). Furthermore, the extraction kinetic analysis indicated that the exponential decay model is the best model to fit the experimental data of anthocyanins obtained from MAE in this study (R²&gt;0.9875). The effective diffusivity value of anthocyanins (2.12~4.87&times;10^-11 m²/s) was enhanced concomitantly with increasing values of microwave power level in MAE process. The thermodynamic parameters of MAE indicated that microwave irradiation benefit the mass transfer. The result can provide a reference for industrial production of MAE.
Number of references:31
Main heading:Anthocyanins
Controlled terms:Citric acid - Enzyme kinetics - Fruits - Kinetics - Microwave generation - Microwave power transmission - Thermodynamics
Uncontrolled terms:Acid concentrations - Best model - Citric acid solution - Effective diffusivities - Experimental data - Exponential decays - Extraction kinetics - Extraction time - Food industries - Grape peel  - Industrial production - Kinetics and thermodynamics - Microwave power levels - Microwave-assisted extraction - Thermodynamic parameter
Classification code:931 Classical Physics; Quantum Theory; Relativity - 821.4 Agricultural Products - 804.1 Organic Compounds - 802.2 Chemical Reactions - 714.2 Semiconductor Devices and Integrated Circuits - 706.1.1 Electric Power Transmission - 641.1 Thermodynamics
DOI:10.3969/j.issn.1002-6819.2012.z1.055
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 50>

Accession number:20122815240860
Title:Experimental study of zanthoxylum seed oil refining process
Authors:Hu, Xiaojun (1); Liu, Sen (1); An, Ming (1)
Author affiliation:(1) Farm Products Processing Institute, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China
Corresponding author:Hu, X.(hu13015343998@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:322-325
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 study is to make crude zanthoxylum seed oil that contains much free fatty acid and wax. In the study the acid contained in the oil was eliminated through solvent extraction and common alkali refining, then the oil was decolorized with activated carbon. Experiment result showed that the oil output was 73.84%, the acid value of the oil (kOH as reference) was lower than 0.5 mg/g, which reached the national standard for the first grade cooking oil, the &alpha;-LNA contained was totally reserved, the weight of ecycled free fatty acid and wax was 19.19% of zanthoxylum seed, the ratio of oil acid values was 0.74, and the recycling rate of ethanol was 91.15%. The improved refining process of zanthoxylum seed oil is to extract crude oil with 95% ethanol twice according to the proportion of 2.5:1 (V/W) firstly, and then deacidify the oil through alkali refining, finally decolorize the oil with activated carbon.
Number of references:20
Main heading:Petroleum refining
Controlled terms:Activated carbon - Crude oil - Ethanol - Extraction - Fatty acids - Oils and fats - Recycling - Refining - Solvent extraction
Uncontrolled terms:Acid value - Cooking oil - Experimental studies - Free fatty acid - National standard - Oil output - Recycling rate - Refining process - Seed oil - Seed oil refining
Classification code:452.3 Industrial Wastes - 513.1 Petroleum Refining, General - 523 Liquid Fuels - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.1 Organic Compounds
DOI:10.3969/j.issn.1002-6819.2012.z1.054
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 51>

Accession number:20122815240858
Title:Effects of reducing agents on common properties of soy protein/ polyvinyl alcohol films
Authors:Jia, Yunzhi (1); Chen, Zhizhou (1)
Author affiliation:(1) Hebei Agriculture University, Hebei Baoding 071000, China; (2) Engineering Research Center For Agricultural Products of Hebei Province, Hebei Baoding 071000, China
Corresponding author:Chen, Z.(chenzhizhou2003@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:312-316
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To modified the comprehensive properties of soy protein/polyvinyl alcohol films, the effects of reducing agents on the properties of the films were studied. The tensile strength, elongation, transmittance and water absorption of the films were compared. Furthermore, a vague mathematics model was used to evaluate quality of the films. The results showed that compared with the control, the films with ascorbic acid or L-cysteine exhibited higher tensile strength, but lower water absorption and elongation. The films mixed with L-cysteine exhibited obviously increased transmittance. The tensile strength and transmittance of the films with Na<inf>2</inf>SO<inf>3</inf> were improved significantly, while the elongation and water absorption were decreased unremarkably. With 0.15% Na<inf>2</inf>SO<inf>3</inf>, the films exhibited higher evaluation score, and its tensile strength, elongation, transmittance and water absorption were 6.904 MPa, 66.076%, 32.310% and 45.695%, respectively. The research contributes to the modification and application of common soy protein/ polyvinyl alcohol films.
Number of references:19
Main heading:Quality control
Controlled terms:Amino acids - Elongation - Films - Ketones - Polyvinyl alcohols - Reducing agents - Sodium - Tensile strength
Uncontrolled terms:Ascorbic acids - Common property - Comprehensive properties - L-cysteine - Mathematics model - Properties - Soy protein
Classification code:913.3 Quality Assurance and Control - 815.1.1 Organic Polymers - 804.1 Organic Compounds - 933 Solid State Physics - 803 Chemical Agents and Basic Industrial Chemicals - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 549.1 Alkali Metals
DOI:10.3969/j.issn.1002-6819.2012.z1.052
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 52>

Accession number:20122815240855
Title:Effects of combined high pressure and calcium chloride treatment on beef tenderness
Authors:Deng, Shaolin (1); Huang, Ming (1); Zhou, Guanghong (1)
Author affiliation:(1) Key Laboratory of Meat Processing and Quality Control, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author:Huang, M.(mhuang@njau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:294-299
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:This experiment was performed to investigate the effects of combined treatment of high pressure and calcium choride (CaCl<inf>2</inf>) injection on post-rigor beef tenderness. Initially, samples from beef longissimus dorsi after 36 h post-slaughter were removed and the influences of CaCl<inf>2</inf> concentration, high pressure level and high pressure processing time on beef tenderness were analyzed respectively. On the basis of the three single-factor experiments, the Box-Behnken response surface methodology was applied to optimize beef tenderization parameters. Meanwhile, the modifications of ultrastructure were observed with transmission electron microscope (TEM). The results indicated that the response surface model, with CaCl<inf>2</inf> concentration, high pressure level and processing time being independent variables and shear force being responses, was highly fitted (R²=0.9742). Beef tenderness was significantly influenced by high pressure level, processing time, CaCl<inf>2</inf> concentration, high pressure level &times; processing time (p&lt;0.01), and high pressure level &times; CaCl<inf>2</inf> concentration (p&lt;0.05). The optimum tenderization parameters of combined high pressure and calcium chloride treatment were as follows: high pressure level was 241 MPa, CaCl<inf>2</inf> concentration was 0.24 mol/L (with 5% injection of sample weight), processing time was 14 min, under which conditions, the shear force value of beef longissimus dorsi was declined by 52.98%, and intermyofibrillar space was enlarged, meanwhile the integrity of sarcomeres was destructed, and the tenderness was significantly improved.
Number of references:22
Main heading:High pressure effects
Controlled terms:Agricultural products - Beef - Calcium chloride - Experiments - Meats - Optimization - Pressure - Surface properties - Transmission electron microscopy
Uncontrolled terms:Beef tenderness - Box-Behnken - Combined treatment - High pressure - High pressure levels - High pressure processing - Independent variables - Longissimus - Processing time - Response surface methodology  - Response surface models - Shear force - Tenderness - Transmission electron microscope - Ultrastructure
Classification code:931.1 Mechanics - 921.5 Optimization Techniques - 901.3 Engineering Research - 931.2 Physical Properties of Gases, Liquids and Solids - 822.3 Food Products - 804.2 Inorganic Compounds - 741.3 Optical Devices and Systems - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2012.z1.049
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 53>

Accession number:20122815240847
Title:Evaluation of land intensive use level in ten villages of Jiaobei town, Jiaozhou city
Authors:Liu, Jie (1); Wang, Ailing (1); Jiang, Shuqian (1); Zou, Xianwei (1); Sun, Juan (1)
Author affiliation:(1) College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China
Corresponding author:Wang, A.(ailingwang@sdau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:244-249
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:Evaluation of village land intensive use is an important part of the village renovation planning. Based on the connotation of village land intensive use, ten villages in Jiaobei town, Jiaozhou city were involved in this study to build an evaluation index system of the village land intensive use, and the village land intensive use level was evaluated by multi-factor comprehensive evaluation method. The evaluation results showed that the village land intensive use level of the studied area was low, with three villages in the low utilization level, seven in moderate utilization level and none in intensive or excessive utilization level. Based on the evaluation results analysis, suggestions for the village land intensive use were put forward, such as constructing new rural community, perfecting idle land and idle homestead use, improving village life convenience and ecological environment. The results of this study can provide a reference for the village renovation.
Number of references:21
Main heading:Rural areas
Controlled terms:Environmental management - Land use
Uncontrolled terms:Comprehensive evaluation - Ecological environments - Evaluation index system - Evaluation results - Jiaobei town - Land intensive use evaluation - Multi-factor - New rural
Classification code:403 Urban and Regional Planning and Development - 454.1 Environmental Engineering, General - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.3969/j.issn.1002-6819.2012.z1.041
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 54>

Accession number:20122815240836
Title:Interactive editing technique and its implementation for virtual tree structure
Authors:Lin, Rongkun (1); Zou, Jie (1); Chen, Chongcheng (1); Tang, Liyu (1); Lin, Ding (1)
Author affiliation:(1) Key laboratory of Spatial Data Mining and Information Sharing of Ministry of Education, Spatial Information Research Centre of Fujian, Fuzhou University, Fuzhou 350002, China
Corresponding author:Chen, C.(chencc@fzu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:175-180
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 interactive virtual tree structure editing method is proposed to address the irreversible tree pruning process challenge in the field management. Parametric 3D tree model was built, and interactive stem picking method based on Back-Buffer is proposed by integrating the tree hierarchical topology. OpenGL rendering technique was used to implement interactive stem editing functions, such as branches pruning, shoot sections pruning, branch length or radius adjustment. Using the canopy type found in common ornamental and afforestation trees as the constraint mode, comprehensive 3D tree morphing can be achieved rapidly and intuitively. This method not only improves the parameter-based 3D tree modeling system, but also provides a digital, visual, intelligent way to plant type design and pruning for virtual tree planting and management.
Number of references:20
Main heading:Three dimensional
Controlled terms:Application programming interfaces (API) - Electric network topology - Morphology - Reforestation - Technology
Uncontrolled terms:3D tree - Branch length - Canopy type - Comprehensive-morphing - Constraint modes - Field management - Hierarchical topology - Interactive editing - Morphing - Plant types  - Plants - Tree pruning - Virtual tree
Classification code:442.2 Land Reclamation - 703.1 Electric Networks - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 901 Engineering Profession - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.z1.030
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 55>

Accession number:20122815240808
Title:Design and experiment of impurity discharging fan of sugarcane harvester
Authors:Xie, Fuxiang (1); Ou, Yinggang (1); Liu, Qingting (1); Zou, Xiaoping (1); Feng, Jiamo (1)
Author affiliation:(1) Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Ou, Y.(ouying@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:8-14
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:In order to solve the question of vent impurity of the sugarcane combine harvester, the new fan on the vent impurity device of sugarcane harvester was designed, and experiments were carried out on the test-bed. The wind speed of outlet of impurity discharging fan was guide line, the single experiments were conducted to study in the following factors: the new fan speed, inlet mode and inlet area. The results show that the best parameters of impurity discharging fan were respectively speed of fan was 1800 r/min, inlet mode was the axial, inlet area were 16475, 19119 mm² and distance of fan outlet was 50 mm. The wind speed averages of the five measurement points were respectively 13.867, 14, 11.633, 11.333, 12.383 m/s. In the optimal parameters were proved to be the best by experiment on the impurity discharging fan.
Number of references:21
Main heading:Experiments
Controlled terms:Design - Harvesters - Sugar cane - Wind effects
Uncontrolled terms:Combine harvesters - Fan speed - Measurement points - Optimal parameter - Sugarcane harvesters - Wind speed
Classification code:408 Structural Design - 408.1 Structural Design, General - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2012.z1.002
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 56>

Accession number:20122815240810
Title:Design of opener on no-till wheat seeder
Authors:Gou, Wen (1); Ma, Rongchao (1); Yang, Wenyu (1); Fan, Gaoqiong (1); Lei, Xiaolong (1); Hui, Kun (1); Yang, Huizhen (2)
Author affiliation:(1) College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China; (2) Sichuan Chuanlong Tractors Manufacturing Co. Ltd., Chengdu 610505, China
Corresponding author:Ma, R.(mycao@sicau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:21-25
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In view of the cusp-type opener of no-till wheat seeders was easy to be wrapped by grass, and be jammed when opening and its working life was short in conservation tillage system in the hilly area of southwest, the arc blade type opener was designed. The geometry model of arc blade type opener was established, and the discrete element method was adopted for analyzing the working resistance. The results indicated that the average opening width was 40 mm, deviation of opening depth was 5 mm, cut rate of corn stubble was over 86%, soil disturbance rate was 18%-22%. The arc blade type opener can improve the traffic ability of seeder, and the performances of opening and cutting stubbles are excellent, so it can satisfy the opening requirement of wheat no-till sowing in the hilly area of southwest.
Number of references:19
Main heading:Finite difference method
Controlled terms:Agricultural machinery - Soil conservation - Structural design
Uncontrolled terms:Arc blade type opener - Conservation tillage - Conservation tillage systems - Geometry model - Hilly areas - No-till - No-till wheat seeder - Opening width - Soil disturbances - Working life
Classification code:408.1 Structural Design, General - 821.1 Agricultural Machinery and Equipment - 821.3 Agricultural Methods - 921.6 Numerical Methods
DOI:10.3969/j.issn.1002-6819.2012.z1.004
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 57>

Accession number:20122815240828
Title:Development of conductivity transmitter in-situ detection with high frequency by buoy
Authors:Wang, Cong (1); Li, Daoliang (1); Zhang, Lingxian (1); Ding, Qisheng (1); Fu, Zetian (1)
Author affiliation:(1) Department of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (2) Department of Electrical Engineering and Automation, Xuzhou Normal University, Xuzhou 221116, China
Corresponding author:Zhang, L.(zlx131@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:129-133
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 real-time monitor changes of water salinity and dynamically analyze its perennial salinity distribution, this paper designed an in-situ high-frequency conductivity transducer with a buoy. The transducer uses a low power MCU (MSP430F149) and a SIM300 GPRS communication module, and the remote date acquisition is realized within the coverage of GPRS signals in water areas, such as rivers, lakes and aquafarms. The system was designed with a linear interpolation to compensate the temperature conductivity sensor, and the compensation accuracy is &plusmn;5% FSC. The study can provide a feasible solution for online water monitoring in field waters.
Number of references:17
Main heading:Transducers
Controlled terms:Electric conductivity - Measurements
Uncontrolled terms:Communication modules - Date acquisition - Feasible solution - GPRS - High frequency - High frequency HF - In-field - In-situ - Linear Interpolation - Low Power  - MSP430F149 - Real-time monitor - Salinity distributions - Temperature compensation - Temperature conductivity - Water areas - Water monitoring - Water salinity
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 715 Electronic Equipment, General Purpose and Industrial - 704 Electric Components and Equipment - 701.1 Electricity: Basic Concepts and Phenomena
DOI:10.3969/j.issn.1002-6819.2012.z1.022
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 58>

Accession number:20122815240868
Title:Analysis of stability and rheology of soybean oil body emulsions
Authors:Wu, Nana (1); Yang, Xiaoquan (1); Zheng, Erli (1); Wang, Lijuan (1); Guo, Jian (1); Zhang, Jinbo (1); Huang, Xu (1)
Author affiliation:(1) Protein Research and Development Center, Department of Food Science and Technology, South China University of Technology, Guangzhou 510640, China
Corresponding author:Yang, X.(fexqyang@scut.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:369-374
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:This study is focus on the physicochemical properties of soybean oil body emulsions for the industry application. Oil bodies were extracted from soybean using an aqueous extraction method and could be used in food process. The influences of pH (2-8), NaCl (0-250 mmol/L), and thermal processing (30-90&deg;C, 30 min) on the properties and stability of the oil bodies were analyzed using Zeta-potential, mean particle diameters, and creaming stability measurements. Rheological properties of soybean oil body emulsions were determined. Zeta-potential of soybean oil body emulsions went from 20 mV to -40 mV as the pH was increased from 2 to 8, and the isoelectric point was around pH 4.5. Soybean oil body emulsions were stable on aggregation and creaming under low (pH&le3) and high (pH&ge;6) pH values, the particle diameters of which was about 400 nm; but they were unstable at intermediate pH values (3&lt;pH&lt;6). The soybean oil body emulsions with 25 mmol/L NaCl were unstable, and exhibited big particle diameters. The soybean oil body emulsions were stable under thermal processing of 30~90&deg;C(0 mmol/L NaCl, pH 7.0). The soybean oil body emulsions exhibited weak gel-like behavior, viscosities of which were increased with the increase of oil content. These results showed that soybean oil body emulsions were stable under certain environmental conditions.
Number of references:22
Main heading:Oilseeds
Controlled terms:Convergence of numerical methods - Elasticity - Emulsification - Emulsions - Extraction - Industrial applications - Particle size - pH - Rapid thermal annealing - Rheology  - Sodium chloride - Stability
Uncontrolled terms:Analysis of stability - Aqueous extraction - Big particles - Creaming stability - Environmental conditions - Food process - Industry applications - Iso-electric points - Mean particle diameter - Oil bodies  - Oil contents - Particle diameters - pH value - Physicochemical property - Properties - Rheological property - Soybean oil
Classification code:961 Systems Science - 804.2 Inorganic Compounds - 821.4 Agricultural Products - 913 Production Planning and Control; Manufacturing - 921.6 Numerical Methods - 931 Classical Physics; Quantum Theory; Relativity - 951 Materials Science - 804 Chemical Products Generally - 801.1 Chemistry, General - 801 Chemistry - 537.1 Heat Treatment Processes - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 802.3 Chemical Operations
DOI:10.3969/j.issn.1002-6819.2012.z1.062
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 59>

Accession number:20122815240817
Title:Experimental study on performance of heat pump system for tobacco leaf flue-curing
Authors:L&#252;, Jun (1); Wei, Juan (1); Zhang, Zhentao (1); Yang, Luwei (1); Li, Zhaomin (3); Yang, Qingmin (3)
Author affiliation:(1) Technical Institute of Physics and Chemistry of CAS, Beijing 100190, China; (2) Graduate University of CAS, Beijing 100049, China; (3) Songxian Tobacco Company, Luoyang 471400, China
Corresponding author:Yang, L.(lwyang2002@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:63-67
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 characteristic of heat pump system for tobacco leaf flue-curing and provide valuable reference for engineering application and extension, a new heat pump system which had a simple structure, easy controlling and low cost for tobacco leaf flue-curing was designed. Then the experimental performance of such system was investigated. When the quantity of fresh tobacco loaded in the barn was 2432 kg, the results of the experiment indicated the maximum power consumption of compressor was 12.6 kW; that the coefficient of performance (COP) reached 3.25; and the specific moisture extraction rate (SMER) of heat pump system for tobacco leaf flue-curing was 2.42 kg/(kW&middoth) during the whole curing process. Finally an economic comparison for curing tobacco between with heat pump and with coal stove was made. The curing cost for 1 kg dry tobacco leaves was 2.12 Yuan with heat pump and 2.97 Yuan with coal stove. Comparing with coal stove, heat pump system for tobacco leaf flue-curing has advantage in energy saving and remarkable social and economic benefits.
Number of references:21
Main heading:Curing
Controlled terms:Coal - Drying - Energy conservation - Experiments - Flues - Heat pump systems - Tobacco
Uncontrolled terms:Coefficient of Performance - Curing process - Economic benefits - Economic comparisons - Engineering applications - Experimental studies - Flue-curing - Heat pumps - Low costs - Simple structures  - Specific moisture extraction rates - Tobacco leave
Classification code:821.4 Agricultural Products - 815.1 Polymeric Materials - 642.1 Process Heating - 901.3 Engineering Research - 641.2 Heat Transfer - 524 Solid Fuels - 521 Fuel Combustion and Flame Research - 525.2 Energy Conservation
DOI:10.3969/j.issn.1002-6819.2012.z1.011
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 60>

Accession number:20122815240846
Title:Experimental study of the use of carbonized straw covers on conservation tillage
Authors:Lu, Caiyun (1); Wang, Qingjie (1); He, Jin (1); Li, Hongwen (1); Rasaily, Rabi G. (1); Qiao, Xiaodong (1); Li, Hui (1)
Author affiliation:(1) Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Wang, Q.(wangqingjie@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:238-243
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The large quantities of 100% straw covered fields in the annual double cropping system affects the operation of the no-till planter, which had been influenced the crop emergency. The effects of 6 different kinds of treatments on soil water content, plant growth characteristics and plant yields was researched in this study. The results showed that the problems of blocking under large amount of straw, seeds airing were solved under biochar covers in no-tillage treatment. Compared to straw covers in no-tillage treatment, the water content of biochar covers with no-tillage treatment was lower, in contrast, plant growth characteristics such as crop emergency and plant height and plant yields were increased. The results in this study can promote the extension and development of conservation tillage.
Number of references:21
Main heading:Cultivation
Controlled terms:Carbon - Crops - Growth (materials) - Soil conservation - Soil moisture - Water content
Uncontrolled terms:Biochar - Characteristics - Conservation tillage - Double cropping - Experimental studies - No tillage - No-till planters - Plant growth - Plant height - Soil water content  - Yield
Classification code:444 Water Resources - 483.1 Soils and Soil Mechanics - 804 Chemical Products Generally - 821.3 Agricultural Methods - 821.4 Agricultural Products - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.z1.040
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 61>

Accession number:20122815240834
Title:Space-time analysis on downscaled soil moisture data and parameters of plant growth
Authors:Wang, Anqi (1); Shi, Jiancheng (2); Gong, Huili (1); Xie, Chao (3)
Author affiliation:(1) College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China; (2) Institute of Remote Sensing Application, Chinese Academy of Sciences, Beijing 100101, China; (3) Institute of Remote Sensing and Geographic Information System, Peking University, Beijing 100871, China
Corresponding author:Gong, H.(gonghl@263.net)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:164-169
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:Soil moisture is an important hydrological parameter, and inversion of soil moisture collaborated by multi-source remote sensing data would be the trend in the future. Utilizing passive microwave and optical data, the advantage of spatial and time resolution can be effectively integrated. This paper selected AMSR-E soil moisture product and MODIS data of the study area, which covers Guanting Reservoir and the surrounding areas throughout the year 2010. NDVI, land surface temperature (Ts), and Albedo, multiple regression method has been applied to conduct analysis on AMSR-E soil moisture data having a spatial resolution of 25 km. As a result, a group of time series data featuring a cycle of 16 days and average surface soil moisture of 1km was obtained. By taking account into the type of land use and TRMM cumulative rainfall product, relevant data of Spearman and Pearson was selected and the analysis was conducted on the relationship among vegetation growth, cumulative rainfall and soil moisture, separately for different types of land cover during vegetation growth period and two other time periods throughout the year. The conclusion showed that on non-irrigated land, evident correlation between soil moisture and cumulative rainfall could be identified. On irrigated land, changes in soil moisture and that of cumulative rainfall were inconsistent. The average soil moisture of different types of land cover in the study area was closely related to maximum NDVI value; while without distinguishing the vegetation type, the correlation diminished. The research showed the vegetation's response lag from the surface soil moisture's change and this lagging characteristic had to do with the vegetation's delayed response on the root zone's soil moisture, and the extent of lagging would vary among different types of land cover.
Number of references:20
Main heading:Soil surveys
Controlled terms:Atmospherics - Landforms - Models - Rain - Rain gages - Remote sensing - Reservoirs (water) - Soil moisture - Vegetation
Uncontrolled terms:Cumulative rainfall - Delayed response - Down-scaling - Guanting reservoir - Hydrological parameters - Irrigated lands - Land cover - Land surface temperature - Multiple regressions - Multisources  - Optical data - Passive microwaves - Plant growth - Remote sensing data - Root zone - Space time analysis - Spatial resolution - Study areas - Surface soil moisture - Time resolution  - Time-periods - Time-series data - Vegetation growth - Vegetation type
Classification code:902.1 Engineering Graphics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 731.1 Control Systems - 483.1 Soils and Soil Mechanics - 481.1 Geology - 443 Meteorology - 441.2 Reservoirs
DOI:10.3969/j.issn.1002-6819.2012.z1.028
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 62>

Accession number:20122815240867
Title:Effects of thermus scotoductus 4-&alpha;-glucanotransferase on modified property of potato starch
Authors:Li, Xuehong (1); Lu, Yong (1); Wang, Bing (1); Jin, Zhengyu (2); Xu, Xueming (2)
Author affiliation:(1) College of Food and Bioengineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (2) College of Food Science, Jiangnan University, Wuxi 214122, China
Corresponding author:Li, X.(em19li@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:363-368
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 this study the effects of Thermus scotoductus 4-&alpha;-glucanotransferase (TS&alpha;GT) on the physicochemical properties and digestibility of potato starch pastes and gel were investigated. The results showed that TS&alpha;GT obviously decreased the content of amylose from 21% to 15% in potato starch, therefore improved the freeze-thaw stability and clarity of potato starch pastes. The potato starch gel property was determinated by instrumental texture profile analysis. The texture property of starch gel with the addition of 0.024-0.06 U/g enzyme for 30 min was obviously improved compared with that of unmodified starch. Chewiness, gumminess, cohesiveness and resilience of starch gels were increased, and the gel hardness was decreased. The vitro digestiblity test was executed according to Englyst method. The results indicated that the modification with less than 0.024 U/g of TS&alpha;GT for 30 min, improved the anti-digestiblity of potato starch. The reverse effect was obtained in the modification with too more TS&alpha;GT. Therefore, modification of potato starch by TS&alpha;GT in suitable conditions significatly improved the physicochemical property and anti-digestibility of starch gels.
Number of references:21
Main heading:Starch
Controlled terms:Enzymes - Gels - Sludge digestion - Textures
Uncontrolled terms:Freeze-thaw stability - Glucanotransferase - Instrumental texture - Paste - Physicochemical property - Potato starches - Reverse effects - Starch gels - Texture properties - Thermus
Classification code:452.2 Sewage Treatment - 804 Chemical Products Generally - 804.1 Organic Compounds - 933 Solid State Physics
DOI:10.3969/j.issn.1002-6819.2012.z1.061
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

<RECORD 63>

Accession number:20122815240840
Title:Effects of handling methods on body temperature and behavior of cattle during transportation
Authors:Deng, Hongyu (1); Fan, Jiaying (2); Gao, Tengyun (1)
Author affiliation:(1) Henan Agricultural University, Zhengzhou 450002, China; (2) Zhengzhou College of Animal Husbandry Engineering, Zhengzhou 450011, China
Corresponding author:Gao, T.(dairycow@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL.1
Issue date:May 2012
Publication year:2012
Pages:197-200
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To assess the stress action of cattle to handling, and then to provide reference to progress cattle handling, enrich the theory of transport stress of cattle, perfect the animal transport standard, body temperature and behavior of cattle in conditions of with and without chute in highway transport were measured. The results revealed that both of handlings with and without chute were stressful, with chute was more stressful than without chute, stress responses of cattle included the elevated temperature and behavior of escape, aggression, vocalization, and behavior strategy to resist handling stress were firstly escape, secondly aggression after escape were hindered and finally vocalization. The results of this study are valuable for evaluating and progressing animal handling mode.
Number of references:14
Main heading:Physiology
Controlled terms:Animals
Uncontrolled terms:Behavior - Behavior strategy - Body temperature - Cattle - Elevated temperature - Handling - On-body - Stress response
Classification code:461 Bioengineering and Biology - 461.9 Biology - 471 Marine Science and Oceanography - 814 Leather and Tanning - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 822 Food Technology
DOI:10.3969/j.issn.1002-6819.2012.z1.034
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.