<RECORD 1>
Accession number:20121314900389
Title:Comparative survey on central heating process for curing barns
Authors:Liu, Lei (1); Zhang, Shihong (1); Chen, Hanping (1); Yang, Haiping (1); Wang, Xianhua (1)
Author affiliation:(1) State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
Corresponding author:Liu, L.(liuleihust@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:371-375
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 paper, eight curing brans were taken as research objects, comparative survey on economics of heating technologies was carried out, which including traditional coal-fired decentralized heating, coal-fired steam boiler central heating, coal gasification central gas supply, thermal oil boiler central heating, biomass fluidized bed furnace central heating and biomass gasification central gas supply, in order to find the optimal heating process. Through comparison, the rate of energy utilization of traditional coal-fired decentralized heating is lower, which also causes serious environmental pollution, and its economic and social benefits are poor compared to other central heating processes. Generally considering the economic and social benefits, biomass fluidized bed furnace for tobacco stems burning central heating is the optimal heating process.
Number of references:21
Main heading:Heating
Controlled terms:Biomass - Coal - Coal gasification - Curing - Energy utilization - Farm buildings - Fluidized bed furnaces - Gas supply - Optimization - Surveys - Tobacco
Uncontrolled terms:Biomass Gasification - Decentralized heating - Economic and social benefits - Environmental pollutions - Heating process - Heating technology - Oil boilers - Optimal heating - Research object - Steam boiler - Tobacco stems
Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control - 815.1 Polymeric Materials - 642.2 Industrial Furnaces and Components - 642.1 Process Heating - 921.5 Optimization Techniques - 525.3 Energy Utilization - 524 Solid Fuels - 522 Gas Fuels - 405.3 Surveying - 525.1 Energy Resources and Renewable Energy Issues
DOI:10.3969/j.issn.1002-6819.2011.z2.071
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 2>
Accession number:20121314900335
Title:Cotton seeds varieties identification based on shape features
Authors:Shao, Luhao (1); Kan, Za (1); Li, Jingbin (1); Tian, Xushun (1)
Author affiliation:(1) College of Machinery and Electricity Engineering, Shihezi University, Shihezi 832000, China
Corresponding author:Kan, Z.(kz-shz@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:86-89
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A total of 14 shape characteristic parameters including the perimeter area, the maximum diameter, Elliptic and regional from cotton50, Xinluzao26, Xinluzao33 were investigated based on image processing, central tendency and dispersion of multivariate statistical analysis. The parameters were then used as the index of species identification. With step discrimination analysis methods of the SPSS, the identification model was established for three varieties, and three linear classification function were obtained. Through verification, the detecting accuracy of the forecasting group, including cotton50, Xinluzao26 and Xinluzao33, were 90%, 80% and 100% respectively. The results show that the recognition rate of these three cotton seeds is high.
Number of references:18
Main heading:Identification (control systems)
Controlled terms:Cotton - Discriminant analysis - Image processing - Parameter estimation
Uncontrolled terms:Discrimination analysis - Identification model - Linear classification - Multivariate statistical analysis - Recognition rates - Shape characteristics - Shape features - Species identification
Classification code:731.1 Control Systems - 741 Light, Optics and Optical Devices - 819.1 Natural Fibers - 922 Statistical Methods
DOI:10.3969/j.issn.1002-6819.2011.z2.017
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 3>
Accession number:20121314900351
Title:Diversity characteristic and pollution load of non-point source total nitrogen and total phosphorus in Songhua River Basin
Authors:Ma, Guangwen (1); Wang, Yeyao (1); Xiang, Bao (2); Wang, Jinsheng (1); Wang, Taiming (1); Hu, Yu (2)
Author affiliation:(1) College of Water Sciences, Beijing Normal University, Beijing 100875, China; (2) Chinese Research Academy of Environmental Sciences, Beijing 100012, China; (3) China National Environmental Monitoring Centre, Beijing 100012, China; (4) State Environment Protection Key Laboratory of Regional Eco-Process and Function Assessment, Beijing 100012, China
Corresponding author:Wang, Y.(wangyy@craes.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:163-169
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:In order to study the diversity characteristic and pollution load of non-point source pollution of nitrogen and phosphorus in the Songhua River, and provide a reference for the water environment management, based on remote sensing (RS) and geographic information system (GIS) technique, using the data of digital elevation model (DEM), county statistics and land use in Songhua River Basin in 2008, the space simulation and load estimation of non-point source pollution in the Songhua River Basin was conducted by export coefficient model (ECM), and the diversity of the non-point source pollution characteristics in the basin was analyzed. The results showed that the non-point source total nitrogen (TN) load was 112.99×10<sup>4</sup> t and total phosphorus (TP) load was 4.05×10<sup>4</sup> t in the Songhua River Basin in 2008 respectively. Nenjiang River sub-basin was the maximum load of TN and TP which was 52.80×10<sup>4</sup> t and 1.79×10<sup>4 </sup>t respectively, accounting for 46.09% and 44.14% of the total TN and TP. The maximum load intensity of TN and TP was the second Songhua River sub-basin which was 2.96 t/(km<sup>2</sup>·a) and 0.11 t/(km<sup>2</sup>·a) respectively. From the perspective of non-point sources, 95.92×10<sup>4 </sup>t of TN loads and 3.40×10<sup>4 </sup>t of TP loads were caused by anthropogenic activities, accounting for 83.90% and 83.94% of the total TN and TP respectively. Anthropogenic factor is the key of non-point source TN and TP of the Songhua River, natural causes should not be ignored as well. The results can provide reference for water environment management and overall understanding the non-point source pollution of the Songhua River.
Number of references:22
Main heading:River pollution
Controlled terms:Computer simulation - Environmental management - Geographic information systems - Information systems - Phosphorus - Pollution - Remote sensing - Rivers - Space optics - Watersheds
Uncontrolled terms:Diversity characteristic - Export coefficients - Geographic information systems (GIS) - Non-point source - Songhua River
Classification code:903.2 Information Dissemination - 804 Chemical Products Generally - 741.1 Light/Optics - 731.1 Control Systems - 723.5 Computer Applications - 723.3 Database Systems - 454.2 Environmental Impact and Protection - 453 Water Pollution - 444.1 Surface Water
DOI:10.3969/j.issn.1002-6819.2011.z2.033
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 4>
Accession number:20121314900338
Title:Influence of different additives on slagging characteristics of stalks biomass pellet fuel
Authors:Yuan, Yanwen (1); Tian, Yishui (1); Zhao, Lixin (1); Meng, Haibo (1)
Author affiliation:(1) Chinese Academy of Agricultural Engineering, Beijing 100125, China
Corresponding author:Tian, Y.(yishuit@yahoo.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:99-103
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 influence of additives on anti-slagging characteristics of the stalks pellet fuels, three kinds of additives, MgCO<inf>3</inf>, CaCO<inf>3</inf>, Al<inf>2</inf>O<inf>3</inf>, were added into the pellet fuels to experiment on the slagging characteristics, ash appearance as well as the chemical components of the ash. The results show that adding additives can result in the considerable changes of the ash appearance of the corn stalks pellet fuel, the smaller the size of the ash pellet, the more course and holes its appearance will be. Si, K account for the main elements of slagging during the combustion of corn stalks pellet fuel. The new component of Mg and Ca with Si and K after reaction has anti-slagging effect. The new silicate comes into being after the reaction of Al with Si and K. It is concluded that the new component of additives with Si and K after reaction has anti-slagging effect, and the results can provide a theoretical basis for solving the slagging problems of the stalks solid fuels.
Number of references:17
Main heading:Fuel additives
Controlled terms:Additives - Calcium carbonate - Pelletizing - Silicates - Silicon - Straw
Uncontrolled terms:Biomass pellet fuels - Chemical component - Corn stalk - New components - Slagging - Slagging characteristics - Solid fuels - Theoretical basis
Classification code:812 Ceramics, Refractories and Glass - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.3 Chemical Operations - 821.5 Agricultural Wastes - 712.1.1 Single Element Semiconducting Materials - 523 Liquid Fuels - 522 Gas Fuels - 414 Masonry Materials - 524 Solid Fuels
DOI:10.3969/j.issn.1002-6819.2011.z2.020
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 5>
Accession number:20121314900332
Title:Analysis of influential factors for maize root water uptake based on Hydrus-1D model
Authors:Wu, Yuanzhi (1); Huang, Mingbin (1)
Author affiliation:(1) State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, China; (2) Shandong Provincial Key Laboratory of Soil Conservation and Environmental Protection, Linyi University, Linyi 276005, China; (3) Institute of Soil and Water Conservation, Northwest Agriculture and Forestry University, Yangling 712100, China; (4) Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Corresponding author:Huang, M.(hmbd@nwsuaf.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:66-73
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:In order to investigate the mechanism of the influence of soil texture, growing state and weather conditions on the root water uptake under various soil moisture conditions, the relationship between root water uptake rate and soil moisture content was used to evaluate soil moisture availability and a Hydrus-1D model was used to analyzed the dynamic changes of root water uptake with various water content with maize growing with different leaf area index, root depth and root density distribution in three soil textural types (loam clay, clay loam and sandy loam) under three weather conditions. Results showed that the root water uptake rate in various conditions remained constant until soil moisture content decreased below a critical value and then declined in a different way under different conditions with further soil moisture depletion. The critical values were different for different soil texture, plant leaf area index and evaporative demand, among which root depth and root density distribution also had significant influence on the relationship between root water uptake and soil moisture content. However, the dynamic change of root water uptake for maize to plant growing state and weather condition was different in the three soils. In general, the critical soil moisture content declined with soil texture in the order: loam clay > clay loam > sandy loam, increased as evaporative demand increasing and decreased as root depth and root density distributed in the deep depth increasing. The effects of various factors on maize root water uptake decreased in the order: soil texture > root density distribution > root depth > evaporative demand > leaf area index.
Number of references:24
Main heading:Geologic models
Controlled terms:Factor analysis - Forestry - Meteorology - Models - Moisture determination - Rain - Soil conditioners - Soil moisture - Textures
Uncontrolled terms:Leaf Area Index - Root depth - Root distribution - Root-water uptake - Soil textures - Weather conditions
Classification code:944.2 Moisture Measurements - 933 Solid State Physics - 922.2 Mathematical Statistics - 902.1 Engineering Graphics - 821.0 Woodlands and Forestry - 483.1 Soils and Soil Mechanics - 481.1 Geology - 443.3 Precipitation - 443 Meteorology
DOI:10.3969/j.issn.1002-6819.2011.z2.014
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 6>
Accession number:20121314900363
Title:Application of chitosan coating in preservation of fresh-cut ginger
Authors:Wang, Zhaosheng (1); Dong, Haizhou (1); Liu, Chuanfu (1); Hou, Hanxue (1); Wang, Guoying (1); Li, Panpan (1)
Author affiliation:(1) College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
Corresponding author:Dong, H.(hzhdong@sdau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:237-241
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 effect of chitosan coating on the preservation quality of fresh-cut ginger, a series of coating liquids containing different mass fractions of chitosan were prepared and then applied to the preservation of fresh-cut ginger at 4°C. The sensory and physicochemical quality of fresh-cut ginger was assessed, and the ultrastructure was observed by transmission electron microscope (TEM). Results showed that chitosan coating significantly suppressed browning and mass loss of fresh-cut ginger. Meanwhile, the decrease of total soluble sugar and vitamin C, and the increase of crude fiber were inhibited. The optimal preservation quality of fresh-cut ginger was observed when chitosan concentration was 1.5%, which could delay the occurrence of the plasmolysis, inhibit the degradation of cell wall as well as the disintegration of nucleus, plastid and mitochondria, maintain the integrity of cell structure, and consequently effectively prolong the shelf-life of fresh-cut ginger.
Number of references:21
Main heading:Food additives
Controlled terms:Agricultural products - Chitosan - Coatings - Energy storage - Sugars - Transmission electron microscopy
Uncontrolled terms:Cell structure - Cell walls - Chitosan coatings - Chitosan concentration - Crude fibers - Different mass - Fresh-cut - Mass loss - Physico-chemical quality - Plasmolysis - Shelf life - Soluble sugars - Transmission electron microscope - Vitamin C
Classification code:821.4 Agricultural Products - 804.1 Organic Compounds - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 741.3 Optical Devices and Systems - 702 Electric Batteries and Fuel Cells - 539 Metals Corrosion and Protection; Metal Plating
DOI:10.3969/j.issn.1002-6819.2011.z2.045
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 7>
Accession number:20121314900374
Title:Supercritical carbon dioxide extraction of Ledum palustre L. essential oils optimizing with uniform design and BP neural network
Authors:Jiang, Wei (1); Liu, Jingbo (1); Tao, Xu (1); Wang, Yu (2); Zhang, Yan (1); Wang, Erlei (1); Lu, Jing (1)
Author affiliation:(1) Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China; (2) Jilin Province Product Quality Supervision Test Institute, Changchun 130022, China
Corresponding author:Liu, J.(ljb168@sohu.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:293-296
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 obtain the optimal essential oils extraction conditions with supercritical carbon dioxide, uniform design and the artificial neural network (back propagation, BP) were applied in extraction of ledum palustre L. Number of neuron in hide layer and some functions for learning, training and transfer were chosen through one-factor experimental design. Four factors (six levels in each factor) were considered in uniform design. Five factors (extraction time, extraction temperature, extraction pressure, particle size, kind of leaves or stems) were considered in BP network. The average error of network prediction was 0.0116. Analysis of correlation and comparison showed that the experimental values and the predicted values were not significant. The effect of each factor on extraction yield and the optimal extraction conditions were studied with this model. The highest extraction yield of essential oils from ledum palustre L. stems could reach 1.82% at 17.5°C, 375 bar for 1 h while the essential oils extraction yield of ledum palustre L. leaves was 2.65% at 15°C, 275 bar for 3 h. It may provide a new study method for the extraction of volatile oil of ledum palustre L.
Number of references:14
Main heading:Extraction
Controlled terms:Backpropagation - Carbon dioxide - Design - Effluent treatment - Essential oils - Neural networks - Optimization - Supercritical fluid extraction - Supercritical fluids - Volatile organic compounds
Uncontrolled terms:Average errors - BP networks - BP neural networks - Experimental values - Extraction conditions - Extraction pressure - Extraction temperatures - Extraction time - Extraction yield - Network prediction - New study - One-factor - Super-critical - Supercritical carbon dioxide extraction - Supercritical carbon dioxides - Uniform design - Volatile oil
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 921.5 Optimization Techniques - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 802.3 Chemical Operations - 723.4 Artificial Intelligence - 452.4 Industrial Wastes Treatment and Disposal - 451.1 Air Pollution Sources - 408 Structural Design
DOI:10.3969/j.issn.1002-6819.2011.z2.056
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 8>
Accession number:20121314900352
Title:Analysis of water environmental pollution in plain river network region in small watershed of Caoqiao River
Authors:Zhao, Tingting (1); Li, Qiuyan (1); Lu, Liqiao (1); Yan, Gang (1); Li, Dinglong (1); Zhang, Wenyi (1)
Author affiliation:(1) School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China; (2) Engineering Research Center of Pollution Control, Tongji University, Suzhou 215101, China
Corresponding author:Zhang, W.(zwy@jpu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:170-175
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:As the main inflow river in the Taihu Lake Basin, Caoqiao River Basin is a typical plain river network in small watershed region, which owns a gentle topography, lots of small rivers around. Pollution sources and pollutants characteristics were analyzed by source apportionment for the basin. The results showed that chemical oxygen demand(COD) mostly came from industrial and rural life pollution, as for total nitrogen(TN), mainly from agriculture farming and dry-wet deposition, NH<inf>4</inf>-N, mostly from dry-wet deposition, agriculture farming, industrial and rural pollution; total phosphorus(TP), mainly from agriculture farming and urban life pollution. Water pollution index of four water quality monitoring sections were evaluated and analyzed, and the results showed that the water quality reached water standard IV during high-flow period, and was inferior to water standard V during mean and low flow period. In addition, water quality of upper reaches could be affected by inflow from Wuyi Canal, while lower reaches by inflow from Taige Canal. There were thirty-seven major rivers around Caoqiao River being evaluated by equivalent standard pollutant loading method, which showed that the total nitrogen loading was the largest, followed by ammonia. This research can provide basis in water regulation of Caoqiao River basin network and eco-restoration planning of water environment, and also provides a certain reference for water regulation of river network area in the south of China as well.
Number of references:16
Main heading:River pollution
Controlled terms:Agriculture - Chemical oxygen demand - Hydraulic structures - Landforms - Pollution - Rivers - Standards - Water analysis - Water pollution control - Water quality - Watersheds
Uncontrolled terms:Eco-restoration - Environmental pollutions - Low flow - Plain river network region - Pollutant loadings - Pollution sources - River basins - River network - Rural life - Small watersheds - Source apportionment - Taihu Lake basin - Total nitrogen - Total phosphorus - Urban life - Water environments - Water pollution index - Water quality monitoring - Water regulation - Water standards
Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control - 801 Chemistry - 611 Hydroelectric and Tidal Power Plants - 481.1 Geology - 902.2 Codes and Standards - 454.2 Environmental Impact and Protection - 453 Water Pollution - 444.1 Surface Water - 441 Dams and Reservoirs; Hydro Development - 453.2 Water Pollution Control
DOI:10.3969/j.issn.1002-6819.2011.z2.034
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 9>
Accession number:20121314900366
Title:Characterization of polyphenol oxidase from red tomato (Lycopersicum esculentum Mill.) fruit
Authors:Sun, Jing (1); Shen, Jin (1); Cao, Dongdong (2); Cheng, Qinyang (1); Liu, Xiaojun (1); Jiang, Weibo (2)
Author affiliation:(1) Chinese Academy of Agricultural Engineering, Beijing 100125, China; (2) College of Food Science and Nutritional Engineering of China Agricultural University, Beijing 100083, China
Corresponding author:Sun, J.(cynthiasj@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:253-257
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Polyphenol oxidase (PPO, EC 1.14.18.1 or 1.10.3.2) is responsible for the oxidative browning, loss of red color or nutrient quality. Increasingly more attention is received to characterize PPOs from various fruits and vegetables, as well as control their activity. In order to provide theoretical basis for technology of tomato processing, the properties of PPO from an extract of mature red tomato (Lycopersicum esculentum Mill. cv 918) fruit were studied in this paper using spectroscopy. PPO, with actechol as substrate, had an optimum pH at 6.0 and optimum temperature at 40°C. 88% of the activity was maintained after heating at 50°C for 10 min. PPO exhibited activity toward monohydroxyphenols, dihydroxyphenols and trihydroxyphenols. Catechol might be the most effective substrate for the PPO, and the Kinetic parameters maximum velocity and Michaelis constant for it were 226.30 U/min and 6.00 mmol, respectively. The oxidation of catechol catalyzed by PPO was inhibited by ascorbic acid as well as β-mercaptoethanol and L-cysteine, and could be remarkably enhanced by sodium dodecyl sulfate-polyacrylamide.
Number of references:19
Main heading:Fruits
Controlled terms:Amino acids - Energy storage - Enzyme kinetics - Enzymes - Ketones - Phenols - Sodium - Sodium sulfate
Uncontrolled terms:Ascorbic acids - L-cysteine - Maximum velocity - Mercaptoethanol - Michaelis constants - Optimum pH - Optimum temperature - Polyphenol oxidase - Theoretical basis - Tomato
Classification code:549.1 Alkali Metals - 702 Electric Batteries and Fuel Cells - 802.2 Chemical Reactions - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2011.z2.048
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 10>
Accession number:20121314900322
Title:Application of new mixed-flow grain dryers
Authors:Shi, Jianfang (1); Liu, Qing (1); Xie, Qizhen (1); Zhao, Yuqiang (1); Shao, Guang (1); Zhao, Wei (1)
Author affiliation:(1) Institute of Agricultural Product Processing, Chinese Academy of Agricultural Engineering, Beijing 100125, China
Corresponding author:Xie, Q.(xqizhen@sina.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:15-19
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:According to the current situation of the lack of effective machine-type on rapeseed drying, new mixed-flow rapeseed dryers were developed successfully. Many new mechanisms were adopted in new machine-type, such as tempering and reverse mechanism, pulse pneumatic draining crops mechanism, the proportion of drying sections and tempering sections being fast adjustable mechanism and so on. The results showed that the technical and economic indicators were better than the existing value of the provisions of national standards using this machine-type dries rapeseed. Through fast adjustment of the proportion of drying sections and tempering sections, this machine-type also could be applied in rice drying, and the technical and economic indicators were better than the existing value of the provisions of national standards, achieved greater uses of a machine.
Number of references:14
Main heading:Drying
Controlled terms:Dryers (equipment) - Grain (agricultural product) - Mechanisms - Oilseeds - Tempering
Uncontrolled terms:Adjustable mechanisms - Current situation - Economic indicators - Mixed-flow - National standard - New mechanisms - Rapeseed
Classification code:537.1 Heat Treatment Processes - 601.3 Mechanisms - 642.1 Process Heating - 802.1 Chemical Plants and Equipment - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2011.z2.004
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 11>
Accession number:20121314900331
Title:Quantitative estimation for vulnerability of agricultural drought disaster using variable fuzzy analysis method
Authors:Qiu, Lin (1); Wang, Wenchuan (1); Chen, Shouyu (2)
Author affiliation:(1) North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China; (2) Water Resources and Flood Control, Dalian University of Technology, Dalian 116085, China
Corresponding author:Wang, W.(wangwenchuan@ncwu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:61-65
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 vulnerability of agricultural drought disaster reflects adaptability, reaction ability and coping ability of agricultural system for drought, and its research has positive effect for disaster prevention under certain strength of disaster-causing. The paper presented threshold value of grade interval of estimation for vulnerability of agricultural drought in Hengyang city. According to variable fuzzy set theory, the variable fuzzy analysis method of multiple attribute and grades was proposed for quantitative estimation for vulnerability of agricultural drought disaster. The results of quantitative estimation showed that the grade of vulnerability of agricultural drought disaster was at grade three in Hengyang city, the order of strength was Hengnan, Hengyang, Changning, Hengdong, Hengshan, Leiyang, Qidong, which objectively reflected the actual situation of vulnerability grade of agricultural drought disaster.
Number of references:15
Main heading:Agriculture
Controlled terms:Disaster prevention - Drought - Estimation - Fuzzy set theory - Fuzzy sets - Grading
Uncontrolled terms:Agricultural drought - Agricultural system - Evaluation - Fuzzy analysis - Multiple attributes - Quantitative estimation - Variable fuzzy set - Vulnerability - Weight
Classification code:444 Water Resources - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 913.3 Quality Assurance and Control - 914.1 Accidents and Accident Prevention - 921 Mathematics - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.3969/j.issn.1002-6819.2011.z2.013
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 12>
Accession number:20121314900354
Title:Preliminary experiment study on rearing chum salmon in artificial environment
Authors:Zhan, Peirong (1); Liu, Wei (1)
Author affiliation:(1) Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150076, China
Corresponding author:Liu, W.(liuwei_1020@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:182-186
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:Chum salmon (Oncorhynchus keta Walbaum) is typical cold water fish that reproduces in freshwater, grows in seawater, and migrates to the upriver for spawning. In order to improve the proliferation and releasing return effect and restore the resources, the fish growth experiments were conducted to rear the fish fries to parr fish in fresh water, and rear the parr to the adult fish in sea water under the artificial conditions. The results showed that the technology of rearing the hatchlings of chum salmon to the adult fish was feasible. The rearing survival rate of Chum salmon fries in the freshwater environment improved evidently to 85%, and the fries could normally grow to the parr fish for seawater rearing. Parr fish rear in the sea water for appropriate time, which can grow to the adult fish. It is an effective way to research the growth and development characteristics by controlling the growth conditions with the engineering technology method.
Number of references:23
Main heading:Fish
Controlled terms:Aquaculture - Seawater - Water
Uncontrolled terms:Artificial environment - Chum salmon - Cold waters - Environment engineering - Experiment study - Freshwater - Freshwater environments - Growth and development - Growth conditions - Survival rate
Classification code:444 Water Resources - 461 Bioengineering and Biology - 471 Marine Science and Oceanography - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3 Agricultural Methods - 822 Food Technology
DOI:10.3969/j.issn.1002-6819.2011.z2.036
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 13>
Accession number:20121314900328
Title:Modal experiment analysis on blackcurrant branches
Authors:Wang, Yecheng (1); Chen, Haitao (1); Qiu, Lichun (2)
Author affiliation:(1) College of Engineering, Northeast Agricultural University, Harbin 150030, China; (2) College of Engineering, Shenyang Agricultural University, Shenyang 110866, China
Corresponding author:Chen, H.(6wyec@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
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:In order to investigate the movement characteristics of blackcurrant branches during harvesting operation, a series of experimental modal analysis were performed by using the stepping sinusoidal excitation, one-point excitation and multi-point acceleration response method based on the assumption of bush branches as cantilever structure fixed a support to match with the actual situation of the bush in the farm. And the least square complex exponent method was employed to fit the modal parameters of the branches. The results indicated there existed one or two resonance frequencies in the range of 4 to 30 Hz on the blackcurrant branches under natural frequency of 11.8±4.54 Hz. The wide distributions of data were shown in the damping ratio, the modal mass and the modal stiffness of the branches and the average value was 7.08%, 0.0686 kg and 394.8 N/m, respectively. These results provide design parameters and basis for the blackcurrants harvesting system.
Number of references:15
Main heading:Experiments
Controlled terms:Harvesting - Modal analysis - Natural frequencies
Uncontrolled terms:Acceleration response - Average values - Blackcurrant - Cantilever structures - Damping ratio - Design parameters - Experimental modal analysis - Harvesting system - Least Square - Modal experiment - Modal mass - Modal parameters - Movement characteristics - Sinusoidal excitations - Two resonance frequencies
Classification code:711.1 Electromagnetic Waves in Different Media - 821.3 Agricultural Methods - 901.3 Engineering Research - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2011.z2.010
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 14>
Accession number:20121314900357
Title:Control effects of aquatic plants on eutrophication in reclaimed water river-lake
Authors:Lu, Lu (1); Yang, Peiling (1); Li, Yunkai (1); Xu, Tingwu (4); Liu, Peibin (5); Lang, Qi (1); Li, Pengxiang (1); Fang, Tangfu (1)
Author affiliation:(1) College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China; (2) Harbin Institute of Water Resources Co. Ltd., Harbin 150076, China; (3) State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (4) International College at Beijing, China Agricultural University, Beijing 100083, China; (5) Beijing Institute of Water Resources, Beijing 100048, China
Corresponding author:Yang, P.(yang-pl@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:196-203
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:Reclaimed water contains lots of nitrogen and phosphorus, which made the environment of water reuse district face a certain pollution risk. Aquatic plants are accepted to become a feasible method for purifying reclaimed water in situ. Based on this, four aquatic plants, Scripus validus, Typha angustifolia (emergent aquatic plants), Water hyacinth (submersed plant) and Potamogeton Crispus L (submerged plant) were chosen for purification effect of TN and TP in reclaimed water with simulated experiments, which are commonly planted in Beijing at present. The results showed that: The optimal time for TN purified in overlying water was concentrated in the second period (incubation time 60-90 d), while TP in the third (incubation time 90-120 d). The emergent aquatic plants had the best removal efficiency for TN and TP in interstitial water and sediment. The emergent aquatic plant itself had better accumulation effect of TN and TP with nice landscape effect, particularly for the compound type. And it could gain the high removal efficiency for the pollutants with harvest timely. The research can provide a reference for constructing artificial wetlands and choosing the aquatic plants in reclaimed water reusing for ecological water in city rivers and lakes.
Number of references:12
Main heading:Water pollution control
Controlled terms:Anoxic sediments - Eutrophication - Lake pollution - Lakes - Nitrogen - Phosphorus - Plants (botany) - Pollution - Purification - River pollution - Wastewater reclamation - Water conservation - Water pollution - Water supply
Uncontrolled terms:Accumulation effects - Aquatic plants - Artificial wetland - In-situ - Incubation time - Interstitial water - Optimal time - Overlying water - Plants - Purification effect - Re-claimed water - Removal efficiencies - Rivers and lakes - Simulated experiments - Submerged plants - Typha angustifolia - Water Hyacinth - Water reuse
Classification code:802.3 Chemical Operations - 483 Soil Mechanics and Foundations - 461.9 Biology - 454.2 Environmental Impact and Protection - 804 Chemical Products Generally - 453.2 Water Pollution Control - 446.1 Water Supply Systems - 444 Water Resources - 407 Maritime and Port Structures; Rivers and Other Waterways - 453 Water Pollution
DOI:10.3969/j.issn.1002-6819.2011.z2.039
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 15>
Accession number:20121314900327
Title:Design of freedom farrowing pen and application effects
Authors:Gu, Zhaobing (1); Li, Mingli (2); Gao, Yajun (1); Lin, Baozhong (1); Li, Baoming (3)
Author affiliation:(1) Chongqing Academy of Animal Sciences, Chongqing 402460, China; (2) College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; (3) Key Laboratory of Structure and Environment in Agricultural Engineering, Ministry of Agriculture, China Agricultural University, Beijing 100083, China
Corresponding author:Li, B.(libm@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:40-44
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:To overcome the inherent drawbacks of farrowing crate and traditional farrowing pen (without crate), a freedom farrowing pen was designed to decrease pre-weaning piglet mortality, and to increase sow locomotion space and litter performance. Application effects in practice were examined. Results indicated that the stillbirth rate was (10.5±3.2)%, (4.1±2.5)% and (4.2±2.6)% for freedom farrowing pens, traditional farrowing pens and farrowing crates, respectively (P<0.001). As compared to the counterparts from farrowing crates and freedom farrowing pens sows from traditional farrowing pens demonstrated shorter transition (falling) time (3.9 s) from standing to lying and higher frequencies of rolling behaviours after farrowing (24 h), due to no anti-crushing bars. Piglets from traditional farrowing pens encountered higher crushing risks, and the crushing mortality ((25.5±9.8)%) was higher than that of farrowing crate ((10.8±3.6)%) and freedom farrowing pen litters ((9.24±5.5)%). Moreover, piglet weaning weight and average daily gains was greater in freedom farrowing pens and traditional farrowing pens than those from farrowing crates (P<0.05). This research showed that the supply of freedom farrowing pen was conducive to enhancing health and welfare of the sow and litter.
Number of references:19
Main heading:Crushing
Controlled terms:Applications - Design - Health risks
Uncontrolled terms:Application effect - Freedom farrowing pen - Higher frequencies - Piglet - Sow - Stillbirth
Classification code:408 Structural Design - 451.2 Air Pollution Control - 461.7 Health Care - 802.3 Chemical Operations
DOI:10.3969/j.issn.1002-6819.2011.z2.009
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 16>
Accession number:20121314900343
Title:Optimization of lipase-catalyzed methyl esterification of fatty acids by response surface method
Authors:Zhang, Hao (1); Yi, Yin (1); Hong, Kun (1); Wan, Qingjiao (1); Niu, Xiaojuan (1)
Author affiliation:(1) School of Life Sciences, Guizhou Normal University, Guiyang 550001, China
Corresponding author:Yi, Y.(yiyin@gznu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:125-130
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 obtain the optimal reaction conditions of immobilized lipase Novozym<sup>™</sup> 435-catalyzed methyl esterification of fatty acids (FFA) from rapeseed oil, Plackett-Burman experiment design was employed to screen the significant factors affecting the esterification rate, which including lipase dosage, temperature, rotating speed and reaction time. The results of steepest ascent path experiment, Box-Behnken experiment and response surface analysis showed that reaction temperature was the most significant factor affecting the esterification rate, while reaction time was the least significant factor. Also, the reaction temperature and the rotating speed had significant interaction. Under the optimal conditions given by response surface analysis, i. e. substrate molar ratio 1.25:1 (methanol/fatty acid), lipase dosage 11.5 g/kg FFA, temperature 42.2°C and rotating speed 199 r/min, the measured average esterification rate reached 95.67% after 6 h reaction, which was consistent well with the predicted value (96.52%).
Number of references:20
Main heading:Esters
Controlled terms:Catalysis - Esterification - Experiments - Fatty acids - Flood control - Lipases - Optimization - Rotating machinery - Surface analysis - Vegetable oils
Uncontrolled terms:Box-Behnken - E. Substrates - Experiment design - Immobilized lipase - Lipase-catalyzed - Methyl esterification - Molar ratio - Novozym435 - Novozymes - Optimal conditions - Optimal reaction condition - Plackett-Burman - Rapeseed oil - Reaction temperature - Response surface analysis - Response surface method - Rotating speed - Steepest ascent
Classification code:951 Materials Science - 921.5 Optimization Techniques - 901.3 Engineering Research - 804.1 Organic Compounds - 802.2 Chemical Reactions - 601.1 Mechanical Devices - 461.9 Biology - 454.1 Environmental Engineering, General - 423 Non Mechanical Properties and Tests of Building Materials
DOI:10.3969/j.issn.1002-6819.2011.z2.025
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 17>
Accession number:20121314900369
Title:Microwave drying technology of peanuts based on constant temperature
Authors:Chen, Lin (1)
Author affiliation:(1) College of Information and Engineering Technology, Sichuan Agricultural University, Ya'an 625014, China
Corresponding author:Chen, L.(lingchen121@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:267-271
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Effects of constant temperature heating with microwave on the quality of peanuts were studied. In order to probe the advantage and applications of microwave heating with constant temperature control, peanuts was taken as testing material to compare the difference of drying quality with conventional gradient microwave heating and microwave heating with constant temperature. Results showed that the drying quality of peanuts by microwave heating with constant temperature was much better than that of drying by conventional gradient microwave, the later would easily cause burned products and skin leveling off. The results proved that the microwave heating with constant temperature could ensure the maximum quality of dried peanuts when the microwave power was 1.20 W/g and the temperature was between 45-50°C.
Number of references:14
Main heading:Drying
Controlled terms:Microwave heating - Microwaves - Temperature control
Uncontrolled terms:Burned products - Constant temperature - Constant temperature control - Drying quality - Leveling offs - Microwave drying - Microwave power - Peanuts - Testing materials
Classification code:642.1 Process Heating - 711 Electromagnetic Waves - 711.1 Electromagnetic Waves in Different Media - 731.3 Specific Variables Control
DOI:10.3969/j.issn.1002-6819.2011.z2.051
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 18>
Accession number:20121314900387
Title:Review of solar-assisted ground source heat pump system
Authors:Guo, Changcheng (1); Shi, Huixian (1); Zhu, Hongguang (1); Pei, Xiaomei (2)
Author affiliation:(1) Modern Agricultural Science and Engineering Institute, Biomass Energy Research Center, Tongji University, Shanghai 200092, China; (2) College of Mechanical Engineering, Tongji University, Shanghai 200092, China
Corresponding author:Shi, H.(huixian_shi@mail.tongji.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
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:In recent years, as a new kind of heat pump combination form in renewable energy field, solar-assisted ground source heat pump system has been widely applied. The present research situation was obtained by summarizing the literatures about the system used in construction, greenhouse and biogas engineering. Especially for medium and large scale biogas engineering, the paper compared and analyzed the application of the system in microbial adaptability, heat load, economic and environmental benefits, then pointed out its prospect.
Number of references:37
Main heading:Heat pump systems
Controlled terms:Biogas - Construction - Geothermal heat pumps - Greenhouses - Solar energy
Uncontrolled terms:Economic and environmental benefits - Heat pumps - Renewable energy fields
Classification code:402.1 Industrial and Agricultural Buildings - 405 Construction Equipment and Methods; Surveying - 522 Gas Fuels - 615.2 Solar Power - 641.2 Heat Transfer
DOI:10.3969/j.issn.1002-6819.2011.z2.069
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 19>
Accession number:20121314900356
Title:Nitrogen removal of urban river water by ecological pond-constructed wetland-ecological pond hybrid system
Authors:Guo, Jian (1); Li, Zhifen (1); Zhu, Qionglu (2); Cui, Lihua (1)
Author affiliation:(1) College of Natural Resources and Environmental Science, South China Agricultural University, Guangzhou 510642, China; (2) College of Hydraulic and Civil Engineering, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Cui, L.(lihcui@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:191-195
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 explore an effective and practical way of wastewater treatment for the management of heavy pollution rivers in Dianchi basin, a pilot scale of ecological pond1-horizontal subsurface flow constructed wetland -ecological pond2 (EP1-HSFCW-EP2) system was built to treat the river water of Xinyunliang river in Kunming city, and this hybrid system was operated under three different hydraulic retention time (HRT) of 1, 2, 3 days. The research indicated that EP1 and EP2 were better than HSFCW for their higher stability and stronger ability in the nitrogen treatment of river water. Among them, EP1 had the best nitrogen treatment effect in high load, played a comprehensive role of flood storage pool and sedimentation tank; EP2 was more stable in the nitrogen treatment and had a better treatment effect and landscape benefit, and could ensure the quality of final effluent water, achieved the double efficacy of EP and landscape pool. It should be considered to increase the size of HSFCW proportions due to the poorer nitrogen treatment effect of HSFCW in high load; When hybrid system operated under HRT of 3 days, 2 days and 1day, the removal rate of total nitrogen were 39.39%, 25.26% and 19.26%, and the removal rate of NH<inf>3</inf>-N were 51.98%, 29.14% and 21.18%, respectively, and all the total nitrogen removal were achieved the first class discharge standard of urban sewage treatment factory. All the NH<inf>3</inf>-N removal achieved the second class discharge standard of urban sewage treatment factory. It was suggested that 1 day should be taken as the optimal HRT parameter to this hybrid system. EP1-HSFCW-EP2 system is very efficacious in treating nitrogen of urban river, and can be one of the effective technologies for treating the heavy pollution rivers in Dianchi basin.
Number of references:22
Main heading:River pollution
Controlled terms:Ecology - Effluent treatment - Effluents - Environmental protection - Heavy water - Hybrid systems - Lakes - Nitrogen - Pollution - Rivers - Sewage treatment - Wastewater treatment - Wetlands
Uncontrolled terms:Ecological pond - Final effluents - High load - Horizontal subsurface flow constructed wetlands - Hydraulic retention time - Kunming city - N removal - Nitrogen treatment - Pilot scale - Removal rate - River water - Storage pool - Total nitrogen - Total nitrogen removal - Treatment effects - Urban river - Urban sewage treatment
Classification code:921 Mathematics - 804 Chemical Products Generally - 454.3 Ecology and Ecosystems - 454.2 Environmental Impact and Protection - 453 Water Pollution - 452 Municipal and Industrial Wastes; Waste Treatment and Disposal - 442.2 Land Reclamation - 407.2 Waterways - 407 Maritime and Port Structures; Rivers and Other Waterways
DOI:10.3969/j.issn.1002-6819.2011.z2.038
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 20>
Accession number:20121314900383
Title:Integrated utilization of sunflower by-products
Authors:Liu, Qing (1); Shi, Jianfang (1); Zhao, Wei (1); Xie, Qizhen (1)
Author affiliation:(1) Institute of Agricultural Product Processing, Chinese Academy of Agricultural Engineering, Beijing 100125, China
Corresponding author:Liu, Q.(qingliu@yahoo.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:336-340
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:Sunflower is an important oil crop in China. The integrated utilization of sunflower by-products, which include the straw and sunflower plate after harvesting, the shell and meal after extracting sunflower oil, was introduced in this article. With the deeper research on technology and equipment, the more perfect condition of industrialization, the winder application foreground of sunflower by-products would be possessed. Some bioactive components as flavonoids, polysaccharides and chlorogenic acid would be extracted from sunflower by-products, some products would be also produced from those, such as protein feed, adsorbent and package material and so on.
Number of references:45
Main heading:Integration
Controlled terms:Agricultural wastes - Straw - Vegetable oils
Uncontrolled terms:Bioactive components - Chlorogenic acids - Integrated utilization - Meal - Oil crops - Package materials - Shells - Sunflower - Sunflower oil
Classification code:804.1 Organic Compounds - 821.5 Agricultural Wastes - 921.2 Calculus
DOI:10.3969/j.issn.1002-6819.2011.z2.065
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 21>
Accession number:20121314900334
Title:Monthly runoff forecast of Ertan hydropower station based on meteorological analysis
Authors:Xu, Liangfang (1); Ma, Guangwen (1)
Author affiliation:(1) College of Hydraulic and Hydroelectric Engineering, Chengdu 610065, China; (2) College of Energy and Environment Engineering, Chengdu 610039, China
Corresponding author:Xu, L.(xlfflb@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:80-85
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 method of anomaly correlation coefficient was used to analyze the relation between monthly runoff and prophase meteorological factors, and the meteorological factors set of monthly runoff prophase was established. The BP network based on the meteorological factors was used to set up the model of monthly runoff on Ertan hydropower station. The monthly runoff forecast in low water season and flood season indicated that the model had high forecasting precision, and the results showed that the forecast was in good agreement with measured value. The forecast model of monthly runoff based on physical meteorological factors was feasible.
Number of references:20
Main heading:Weather forecasting
Controlled terms:Backpropagation - Factor analysis - Meteorology - Runoff
Uncontrolled terms:BP networks - Correlation coefficient - Ertan hydropower station - Flood season - FORECAST model - Forecasting precision - Hydropower stations - Low water - Meteorological analysis - Meteorological factors - Monthly runoff forecast - Runoff forecast
Classification code:443 Meteorology - 444.1 Surface Water - 723.4 Artificial Intelligence - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2011.z2.016
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 22>
Accession number:20121314900321
Title:Rheological analysis of corn straw pretreated by screw extrusion and continuous steam explosion
Authors:Feng, Kun (1); Cai, Jining (1); Chen, Jie (1); Zhang, Qiuxiang (1); Li, Shuangxi (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Corresponding author:Cai, J.(caijn@mail.buct.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:11-14
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 provide physical parameters of the corn straw for the simulation of flow field inside the device, the corn straw was pretreated by the device of screw extrusion and continuous steam explosion. The rheological properties of acquisitions were tested by using a capillary rheometer. The rheological curves of two types of pretreated corn straw and their influence of temperature were investigated. Three rheological models including Bingham model, Casson model and Power law model were used to simulate the rheological parameters of the acquisitions. The results showed that both of the acquisitions had obvious phenomenon of shear thining, they were a kind of pseudoplastic fluid. When the shear rate was low, the effect of temperature on the rheological curves was inapparent. When the shear rate was high, the effect of temperature on the rheology curves was apparent. The results of linear fitting showed that the fitting effect of the acquisitions conducted by the power law model was the best and Bingham model was the worst. The power law model equation of the acquisitions can be used for flow field simulation with higher accuracy. The result can provide a reference for the research of flow state of acquisitions in single-screw extrusion and enzymolysis device.
Number of references:18
Main heading:Rheology
Controlled terms:Agricultural wastes - Elasticity - Extrusion - Mergers and acquisitions - Screws - Shear deformation - Straw - Temperature
Uncontrolled terms:Bingham model - Capillary rheometer - Casson model - Corn straws - Effect of temperature - Enzymolysis - Flow field simulation - Flow state - Linear fitting - Physical parameters - Power law model - Pseudoplastic fluid - Rheological analysis - Rheological models - Rheological parameter - Rheological property - Screw extrusion - Shear thining - Steam explosion
Classification code:912 Industrial Engineering and Management - 821.5 Agricultural Wastes - 641.1 Thermodynamics - 931.1 Mechanics - 605 Small Tools and Hardware - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 535.2.2 Metal Forming Practice
DOI:10.3969/j.issn.1002-6819.2011.z2.003
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 23>
Accession number:20121314900372
Title:Bioactive peptides produced from ultrasonic-pretreated swine blood by microwave-assisted hydrolyzation
Authors:Pan, Fengguang (1); Li, Hongshan (1); Liu, Jingbo (1); Zhao, Yaya (1); Qin, Yanan (1); Fang, Zhen (1); Wu, Han (1)
Author affiliation:(1) Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China
Corresponding author:Liu, J.(ljb168@sohu.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:282-287
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:For making full use of livestock blood proteins and developing functional blooding biological materials, swine hemocytes were disintegrated by ultrasonic waves, and hemoglobins were hydrolyzed by Alcalase assisted by microwave. The results showed that the optimum parameters of ultrasonic disintegration were as follows: the volume ratio of water and hemocytes was 5:1, ultrasonic power 300 W, ultrasonic disintegration time 25 minutes. The 500 W microwave was used when hemocytes were hydrolyzed by Alcalase, and the optimum technology parameters were that the enzyme dose was 6.77% of volume ratio, enzymolysis temperature was 54°C and enzymolysis time was 11 minutes, the degree of hydrolysis of hemoglobin was 23.63%, and the productions were almost oligopeptide with 635.7-1151.1 Da. Those could provide a quick extraction method of swine blood bioactive peptide for further study, and it had well value in practical application.
Number of references:14
Main heading:Ultrasonics
Controlled terms:Agriculture - Biological materials - Blood - Enzymes - Hemoglobin - Hydrolysis - Microwaves - Peptides - Ultrasonic waves
Uncontrolled terms:Alcalase - Bioactive peptides - Blood protein - Degree of hydrolysis - Enzymolysis - Extraction method - Hydrolyzation - Microwave-assisted - Oligopeptides - Optimum parameters - Technology parameters - Ultrasonic power - Volume ratio
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology - 711 Electromagnetic Waves - 753.1 Ultrasonic Waves - 802.2 Chemical Reactions - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.3969/j.issn.1002-6819.2011.z2.054
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 24>
Accession number:20121314900350
Title:Nutrients balance and nitrogen pollution risk analysis for organic rice production in Yili reclamation area of Xinjiang
Authors:Sun, Xiangping (1); Li, Guoxue (1); Meng, Fanqiao (1); Guo, Yanbin (1); Wu, Wenliang (1); Hanmu, Yili (2); Chen, Yong (2)
Author affiliation:(1) College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (2) Yili Agricultural Technical Extension Station, Yining 835000, China
Corresponding author:Meng, F.(mengfq@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:158-162
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Integration of soil and water resources conservation and maintaining of stable high yield is the main challenge during the land cultivation in Yili, Xinjiang Autonomous region. In this study, 2 years of organic rice production experiment was undertaken in Yili river basin for the analysis of impact of organic and chemical fertilizers on paddy yield and its components, soil nutrients balance, nutrient utilization efficiency and nitrogen risks. The results indicated that under organic farming, rice yield increased by applying of cattle and sheep manure which impacted on the number of grains per rice ear and thousand seed weight, while conventional farming contributed by tillering and the number of grains per rice ear. The best proportion animal manure treatment increased soil organic matter but not on soil total nitrogen. The N, P and K balances for organic rice treatments were in 106-678 kg/hm<sup>2</sup>, 26-166 kg/hm<sup>2</sup> and 79.5-627.3 kg/hm<sup>2</sup>, respectively. Nitrogen apparent recovery and agronomic efficiency of organic rice production for lowest and highest animal manure treatments were 17.1%, 10.6 kg/kg and 8.7%, 4.9 kg/kg respectively. The highest proportion animal manure treatment could achieve 80% of rice yield for conventional rice production. higher proportion animal manure increased rice yield but also had low nutrient utilization efficiency and potential non-point source pollution of nitrogen in the current newly cultivated region. The study can provide technical support for sustainable usage of water and land resources during Yili reclamation area comprehensive development process.
Number of references:17
Main heading:Grain (agricultural product)
Controlled terms:Agriculture - Animals - Crops - Efficiency - Fertilizers - Land reclamation - Manures - Nitrogen - Nutrients - Pollution - Seed - Soils - Water conservation - Water resources
Uncontrolled terms:Animal manure - Apparent recovery - Chemical fertilizers - Development process - High yield - Land resources - Nitrogen pollution - Non-point source pollution - Nutrient utilization - Organic farming - Organic rice - Rice production - Rice yield - River basins - Seed weight - Sheep manure - Soil nutrients - Soil organic matters - Soil total nitrogen - Technical support - Xinjiang - Yili
Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control - 804 Chemical Products Generally - 483.1 Soils and Soil Mechanics - 913.1 Production Engineering - 454.3 Ecology and Ecosystems - 444 Water Resources - 442.2 Land Reclamation - 454.2 Environmental Impact and Protection
DOI:10.3969/j.issn.1002-6819.2011.z2.032
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 25>
Accession number:20121314900388
Title:Research progress of fast detection methods of fruits and vegetables pesticide residues
Authors:Li, Xiaoting (1); Wang, Jihua (2); Zhu, Dazhou (3); Pan, Ligang (1); Ma, Zhihong (1)
Author affiliation:(1) Beijing Research Center for Agri-Food Testing and Farmland Monitoring, Beijing 100097, China; (2) School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China; (3) National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
Corresponding author:Wang, J.(wangjh@nercita.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:363-370
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 fruits and vegetables production, with excessive and irrational use of pesticides, the development of corresponding technology of detecting pesticide residues has got more and more social attention. In this study, the research progress of fast methods of fruits and vegetables pesticide residues detection in recent years were summarized, which including EIM, ELISA, Biosensor, NIR, MIR, Fluorescence Spectroscopy, Raman Spectroscopy and NMR. The detection principle, research progress, and real application status were introduced. The advantage, disadvantage, and research difficulty of each method were compared. The prospect of fast detection methods of fruits and vegetables pesticide residues was also discussed.
Number of references:55
Main heading:Pesticides
Controlled terms:Agriculture - Biosensors - Fluorescence spectroscopy - Fruits - Raman spectroscopy - Research - Vegetables
Uncontrolled terms:Detection methods - Fast methods - Pesticide residue - Real applications - Research progress - Residue
Classification code:901.3 Engineering Research - 821.4 Agricultural Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 803 Chemical Agents and Basic Industrial Chemicals - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 732 Control Devices
DOI:10.3969/j.issn.1002-6819.2011.z2.070
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 26>
Accession number:20121314900772
Title:Effect of ultrasonic on physical structure and composition of squid (Ommastrephes bartrami) melanin
Authors:Yuan, Li (1); Gao, Ruichang (1); Xue, Changhu (2); Ma, Haile (1)
Author affiliation:(1) School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; (2) College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
Corresponding author:Gao, R.(xiyuan2008@ujs.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:376-380
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:In order to enhance the extraction yield of active substance from squid (Ommastrephes bartrami) melamin, the effect of ultrasonic on the physical structure and composition of squid melanin was studied. The ultrasonic power, intermission time, work time and total time were 15 W/mL, 1 second, 2 seconds and 20 minutes, respectively. The results showed that the characteristic absorption peak of 224 nm, 267 nm of the treated squid melanin became more prominent than those of untreated squid melanin in ultraviolet optical absorption spectrum. The data showed that the solubility of melanin enhanced significantly. Meanwhile, there was no new chemical substance in the treated melanin. The content of protein in melanin did not change obviously, but the lipid did. The amount of metals decreased obviously such as Ca, Mg, Na, K, Fe, Cu, Cd and Pb. The results of scanning electron microscopy (SEM) and transmission electron microscopy (TEM) suggested that the squid melanin microspheres blasted during ultrasonic process. The uppermost change of squid melanin induced by ultrasonic only was the physical structure. There were more scraps and smaller balls in the squid melanin sample, which was treated by ultrasonic. This indicated that the ultrasonic might be an effective physical method to extract active substance from the squid melanin without breakage on the chemical structure.
Number of references:23
Main heading:Shellfish
Controlled terms:Agricultural wastes - Cadmium - Chemical analysis - Lead - Physical properties - Scanning electron microscopy - Sodium - Transmission electron microscopy - Ultrasonics
Uncontrolled terms:Active substance - Characteristic absorption - Chemical substance - Extraction yield - Melanin - Physical methods - Physical structures - Scanning electron microscopies (SEM) - Transmission electron microscopy (TEM) - Ultrasonic power - Ultrasonic process - Work time
Classification code:821.5 Agricultural Wastes - 804 Chemical Products Generally - 801 Chemistry - 753.1 Ultrasonic Waves - 931.2 Physical Properties of Gases, Liquids and Solids - 741.3 Optical Devices and Systems - 549.1 Alkali Metals - 546.1 Lead and Alloys - 461.9 Biology - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
DOI:10.3969/j.issn.1002-6819.2011.z2.072
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 27>
Accession number:20121314900325
Title:Analysis on stability of hydraulic servo systems affected by structure stiffness
Authors:Yu, Yang (1); Shi, Boqiang (1); Hou, Youshan (2)
Author affiliation:(1) School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China; (2) China North Vehicle Research Institute, Beijing 100072, China
Corresponding author:Yu, Y.(yangyumail@sohu.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:32-35
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:For large inertia servo system, the influence of structure stiffness on stability is great and it cannot be ignored. Taking the hydraulic vibration servo system of mould for example, the mathematical model of the mould hydraulic vibration servo system was established and the general conditions for system stability were obtained. Considering the influence of structure stiffness, the mathematic model of hydraulic cylinder to load system was also established, and the effect of structure stiffness on the stability was studied through calculation and analysis. The results showed that the comprehensive resonant frequency was the main factor for limiting hydraulic servo system for large inertia servo system. In this case, it must improve the structure stiffness with improving hydraulic inherent frequency. And when considering the influence of joint stiffness, the stability of closed-loop system was better than the half closed-loop system. The research can provide references for analysis of the stability of large inertia servo system.
Number of references:16
Main heading:System stability
Controlled terms:Closed loop systems - Convergence of numerical methods - Hydraulic servomechanisms - Mathematical models - Molds - Natural frequencies - Stiffness - Structure (composition)
Uncontrolled terms:Hydraulic cylinders - Hydraulic servo system - Hydraulic vibration - Inherent frequencies - Joint stiffness - Load systems - Mathematic model - Structure stiffness
Classification code:961 Systems Science - 951 Materials Science - 921.6 Numerical Methods - 921 Mathematics - 816.2 Plants and Machinery for Plastics and Other Polymers - 732.1 Control Equipment - 711.1 Electromagnetic Waves in Different Media
DOI:10.3969/j.issn.1002-6819.2011.z2.0007
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 28>
Accession number:20121314900349
Title:Empirical analysis of rural energy consumption in Changzhou city
Authors:Zhang, Qing (1); Wang, Xiaohua (1)
Author affiliation:(1) College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author:Wang, X.(xhwang@njau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:154-157
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:The energy consumption in rural areas is an important component of sustainable development about the energy and the environment. And it is affected by many factors. In this paper, by statistical data from 2000 to 2009, the rural energy consumption in Changzhou city was analyzed by the methods of correlation analysis, principal components analysis and gray relational analysis. Meanwhile, by the evaluation about the importance of factors affecting the energy consumption, it was concluded that per capita income was the most important factor. Based on the comprehensive analysis, policy recommendations were proposed to improve the level and structure of the energy consumption in Changzhou rural areas, and to guide farmers to use rural energy rationally.
Number of references:20
Main heading:Energy policy
Controlled terms:Energy resources - Energy utilization - Principal component analysis - Rural areas
Uncontrolled terms:Changzhou - Comprehensive analysis - Correlation analysis - Determinants - Empirical analysis - Energy and the environment - Gray relational analysis - Per capita income - Principal component analysis (PCA) - Principal components analysis - Rural energy - Statistical datas
Classification code:525 Energy Management and Conversion - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2011.z2.031
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 29>
Accession number:20121314900360
Title:Simulation of household's decision behavior of arable land use in mountain area of southern Ningxia
Authors:Tian, Yujun (1); Li, Xiubin (2); Ma, Guoxia (3); Zhang, Ying (2)
Author affiliation:(1) Waterborne Transportation Institute, Ministry of Transport, Beijing 100088, China; (2) Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; (3) Chinese Academy for Environmental Planning of the State Environmental Protection Administration, Beijing 100012, China
Corresponding author:Tian, Y.(Tianyj.07b@igsnrr.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:218-225
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:With the development of industrialization and urbanization, the opportunity cost of farm labor is increasing, which will affect the farmer's decision. Using statistic and survey data and taking mountain area of southern Ningxia as an example, based on farmer decision-making mechanism and framework of linear programming theory, an indigenous farm-household model was constructed to study the impacts of rising opportunity cost of farm labor on land use change. Results showed that under the condition of the labor market and food market function, with the rising of opportunity cost of farm labor, farm labor become one of the key factors that affected farm household's decision-making. Namely, the labors with the greatest comparative advantage would be allocated in wage employment, and the labors with comparative disadvantage such as old man or woman would be allocated in on-farm activities. Household should prefer to purchase subsistence goods through market and plant crops with higher labor productivity such as potato and watermelon et al. Some land, especially consolidated land was abandoned. The farm-household model could explain the making-decision behavior of household land use.
Number of references:24
Main heading:Farms
Controlled terms:Decision making - Economics - Employment - Land use - Landforms - Models
Uncontrolled terms:Arable land - Comparative advantage - Decision-making mechanisms - Farm labor - Food markets - Key factors - Labor markets - Labor productivity - Land-use change - Mountain area of southern Ningxia - Opportunity costs - Survey data
Classification code:913 Production Planning and Control; Manufacturing - 912.2 Management - 912 Industrial Engineering and Management - 971 Social Sciences - 902.1 Engineering Graphics - 481.1 Geology - 403 Urban and Regional Planning and Development - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.3969/j.issn.1002-6819.2011.z2.042
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 30>
Accession number:20121314900362
Title:Process optimization of browning inhibitor and preservation of fresh-cut potato chip
Authors:Li, Xinyi (1); Yang, Bingnan (1); Zhao, Fengmin (1); Yang, Yanchen (1); Yin, Xueqing (1); Wang, Yuan (1)
Author affiliation:(1) Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author:Yang, B.(yangbn@caams.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:232-236
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:Looking for better browning inhibitors for fresh-cut potato processing and understanding the changes in the shelf life of fresh-cut potato chips. The paper studied the effect of inhibition on the potato polyphenol oxidase activity by L-cysteine, citric acid and ascorbic acid. Using the orthogonal experiment to find out the best browning inhibitor composition and concentration. Total number of bacterial colony and effective storage time were determined through shelf life experiments with different treatments of single factor with different concentration, browning inhibitor composition and chlorine dioxide. The results showed that the best composition of browning inhibitor was 0.1% CaCl<inf>2</inf>, 0.2% citric acid and 0.15% ascorbic acid. Under the treatment of immersing 10 minute in 40 mg/L chlorine dioxide, packaged with vaccum and storaged at 4°C, the shelf life of fresh-cut potato chip was 7 days.
Number of references:17
Main heading:Optimization
Controlled terms:Agricultural products - Amino acids - Calcium chloride - Citric acid - Energy storage - Enzymes - Experiments - Ketones
Uncontrolled terms:Ascorbic acids - Bacterial colonies - Browning - Chlorine dioxides - Fresh-cut - L-cysteine - Orthogonal experiment - Polyphenol oxidase - Potato - Potato chip - Potato-processing - Shelf life - Storage time
Classification code:702 Electric Batteries and Fuel Cells - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 821.4 Agricultural Products - 901.3 Engineering Research - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2011.z2.044
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 31>
Accession number:20121314900336
Title:Geometric rectification method for high spatial resolution synthetic aperture radar data
Authors:You, Shucheng (1); Liu, Shunxi (2); Xu, Zongxue (1)
Author affiliation:(1) College of Water Sciences, Beijing Normal University, Beijing 100875, China; (2) China Land Surveying and Planning Institute, Beijing 100035, China
Corresponding author:You, S.(youshucheng@mail.clspi.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:90-93
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:With a spatial resolution of up to 1 m, SAR data has significantly improved applicability of land remote sensing project. Feature point locating accuracy was analysis based on synthetic aperture radar imaging mechanism and GCP selection principles were proposed. Suitable SAR geometric correction models were suggested through analogy analysis. In this work, TERRASAR, COSMO SkyMed and RADARSAT-2 data were used for deep study. Tests showed that 10-15 GCP is required to obtain good result, and about 3-5 m RMS for 1m spotlight mode image and about 5~8 m for 3 m strip mode image which respectively meet the requirements of 1:10000 and 1:25000 land survey monitoring geometric accuracy.
Number of references:16
Main heading:Synthetic aperture radar
Controlled terms:Feature extraction - Geometry - Land use - Radar imaging - Remote sensing
Uncontrolled terms:Cosmo skymed - Geometric accuracy - Geometric correction - Geometric rectification - High spatial resolution - Image - Radarsat-2 - SAR data - Selection principles - Spatial resolution - Spotlight mode - Synthetic aperture radars (SAR)
Classification code:403 Urban and Regional Planning and Development - 716 Telecommunication; Radar, Radio and Television - 716.2 Radar Systems and Equipment - 731.1 Control Systems - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2011.z2.018
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 32>
Accession number:20121314900342
Title:Liquefaction reaction process and mechanism of cornstalk in sub/super critical cyclohexane
Authors:Li, Xian (1); Xie, Xin'an (1); Zheng, Chaoyang (1); Li, Yan (1)
Author affiliation:(1) College of Food Science, South China Agriculture University, Guangzhou 510641, China
Corresponding author:Xie, X.(xinanxie@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:119-124
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 reaction temperature, cyclohexane quantity and reaction time on the liquefaction of cornstalk in sub- and super-critical cyclohexane were investigated by using a batch type reactor. Experiments were carried out over the temperature range of 260-320°C, and pressure range of 2-4.5 MPa. The results showed that the reaction temperature, cyclohexane quantity and reaction time had significant influences on the pyrolysis products. With the temperature increasing from 260 to 320°C, the residue and heavy oil yields decreased by 4.9% and 3.34% respectively. A low residue yields reached to 36.54% with 40 mL cyclohexane at 310°C for 20 min. The gas and light oil products increased while the residue decreased with the reaction time from 0 to 40 min. The GC/MS measurements for the light oil and heavy oil revealed that the cellulose, hemicellulose and lignin in cornstalk were liquefied in sub/super critical cyclohexane. The components of heave oil were mainly phenol and its derivatives, and pyranoid derivatives and organic acids were dominant in the light oil. Meanwhile the research showed that cyclohexane played the role of hydrogen reforming and a secondary reaction existed in the liquefaction process. The lignin liquefaction reaction paths in sub- and super-critical cyclohexane and the liquefaction reaction network were built based on the results.
Number of references:15
Main heading:Cyclohexane
Controlled terms:Cellulose - Heavy oil production - Hydrogen - Lignin - Liquefaction - Organic acids - Phenols - Straw
Uncontrolled terms:Batch type reactor - GC/MS measurement - Heavy oil - Light oil - Liquefaction process - Pressure ranges - Pyrolysis products - Reaction network - Reaction paths - Reaction process - Reaction temperature - Secondary reactions - Super-critical - Temperature range
Classification code:512.1.2 Petroleum Deposits : Development Operations - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.1 Organic Compounds - 815.1.1 Organic Polymers - 821.5 Agricultural Wastes
DOI:10.3969/j.issn.1002-6819.2011.z2.024
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 33>
Accession number:20121314900326
Title:Design and experiment on walking vehicle driven by electric for farming
Authors:Li, Congquan (1); Fan, Chaoyi (1); Su, Xintao (2)
Author affiliation:(1) College of Arts and Science of Jianghan University, Wuhan 430056, China; (2) Commercial Vehicle of Dongfeng Automobile Company, Wuhan 430056, China
Corresponding author:Li, C.(licongquan@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:36-39
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Nowadays, most of the people who live in rural areas in China are weak physique, so transportations on roads between fields are difficult. The walking vehicle driven by electric for farming was specially designed for Chinese farmers. The vehicle can be driven by both electric power and electric-man power. Owing to the special mechanical structure, it can be driven with 3 wheels on a wide road and one wheel on a narrow road. Tests conducted on the rural road showed that the vehicle can be driven through 120 mm wide roads and climb 13° slopes by electric power. It can even climb 17° slopes with electric-man power. Its speed can be adjusted by the operator. The maximum speed under the rating load on a flat road is 2.8 m/s, roughly as fast as jogging.
Number of references:16
Main heading:Vehicles
Controlled terms:Design - Equipment - Experiments - Roads and streets - Rural areas - Wheels
Uncontrolled terms:Electric power - Maximum speed - Mechanical structures - Slope - Walking vehicle driven by electric
Classification code:901.3 Engineering Research - 901 Engineering Profession - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 601.2 Machine Components - 432 Highway Transportation - 408 Structural Design - 406.2 Roads and Streets
DOI:10.3969/j.issn.1002-6819.2011.z2.008
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 34>
Accession number:20121314900324
Title:Effects of connection mode between transducer and tank on ultrasonic field distribution
Authors:Wang, Haiou (1); Hu, Zhichao (1); Wang, Jiannan (1); Wu, Feng (1); Xie, Huanxiong (1); Lü, Xiaolian (1)
Author affiliation:(1) Nanjing Research Institute of Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
Corresponding author:Hu, Z.(nfzhongzi@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:26-31
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to study the effects of connection mode between transducer and tank on ultrasonic field distribution, two cleaning tanks were developed with whole-bonding mode and flange-connected mode, respectively, and their ultrasonic distribution was tested and compared. The ultrasonic field of the two tanks showed strong standing wave characteristics, and the field intensity in the vertical direction changed in terms of strong-weak alternated cycle, as well as decaying gradually (more for flange-connected tank) from the bottom up. On the horizontal planes, ultrasonic intensity of transducer center was higher than that of surrounding areas, and the difference among peaks and troughs decreased from the bottom up, showing that the ultrasonic field produced by transducers was characterized by directing and scattering in some sense. From the overall distribution of ultrasonic field, ultrasonic intensity of whole bonding tank was significantly higher than that of flange-connected one, showing that the whole-bonding mode was more conducive to convert high-frequency vibration of the transducers into the water cavitation to enhance the cleaning effect.
Number of references:14
Main heading:Tanks (containers)
Controlled terms:Acoustic fields - Agricultural products - Cleaning - Flanges - Transducers - Ultrasonic transducers
Uncontrolled terms:Bottom up - Cleaning effect - Connection mode - Field intensity - High-frequency vibrations - Horizontal planes - Sound field distribution - Standing wave - Ultrasonic field - Ultrasonic intensity - Vertical direction - Water cavitation
Classification code:802.3 Chemical Operations - 753.2 Ultrasonic Devices - 751 Acoustics, Noise. Sound - 821.4 Agricultural Products - 715 Electronic Equipment, General Purpose and Industrial - 619.2 Tanks - 619.1.1 Pipe Accessories - 704 Electric Components and Equipment
DOI:10.3969/j.issn.1002-6819.2011.z2.006
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 35>
Accession number:20121314900358
Title:Effects of tylocin on room anaerobic digestion of swine sewage
Authors:Wu, Yinbao (1); Huang, Lu (1); Wang, Xiaoqing (1); Ma, Baohua (4); Liao, Xindi (1); Chen, Guixiu (1); Peng, Pingcai (1)
Author affiliation:(1) College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (2) Key Lab. of Ecological Agriculture of Ministry of Agriculture of the People's Republic of China, South China Agricultural University, Guangzhou 510642, China; (3) Key Lab. of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, Guangzhou 510642, China; (4) Nanhai Entry-Exit Inspection and Quarantine Bureau, Foshan 528200, China
Corresponding author:Wu, Y.(wuyinbao@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:204-210
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:Veterinary drug residue in the sewage is one of the most important factors which impacts the effect of anaerobic digestion. Effects of tylosin on anaerobic digestion of swine wastewater at two concentration levels were studied by two methods as adding swine manure collected from swine fed with tylosin in diets and adding tylosin into antibiotic free swine manure. Anaerobic digestion experiments were conducted at 20°C in laboratory digesters which the effective volume was 1300 mL. The results showed that the parent material of tylosin was not detected in the anaerobic digestion during the experimental period after seven consecutive days of adding tylosin at a rate of 7.42 μg/g and 12.96 μg/g respectively. Compared with the control, the presence of tylosin in swine manure enhanced methane production by 24.6% averagely. The trials adding tylosin at the concentration of 7.42 μg/g swine manure produced more methane than that of 12.96 μg/g. But there were no significantly difference between two methods. The NH<inf>4</inf><sup> </sup>-N concentration in trials adding swine manure collected from swine fed with tylosin in diets was significantly higher than that in the trials adding tylosin into antibiotic free swine manure. But there were no significantly difference between two adding concentrations of tylosin. Compared with the control, the trial with addition of tylosin had no significant effect on the pH, TN, COD of biogas slurry, and TN, organic matter of biogas sludge. Under the condition recommended by this article, it was observed that the presence of tylosin with the concentration of 7.42 μg/g and 12.96 μg/g swine manure had no negative effect on anaerobic digestion of swine sewage, and two methods suited for studying the effect of tylosin on anaerobic digestion.
Number of references:20
Main heading:Anaerobic digestion
Controlled terms:Antibiotics - Biogas - Manures - Methane - Nutrition - pH effects - Sewage
Uncontrolled terms:Biogas slurry - Concentration levels - Effective volume - Methane production - Parent materials - Swine manure - Swine wastewater - Tylosin - Veterinary drug residue
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal - 461.7 Health Care - 522 Gas Fuels - 801.1 Chemistry, General - 804.1 Organic Compounds
DOI:10.3969/j.issn.1002-6819.2011.z2.040
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 36>
Accession number:20121314900364
Title:Application of burdock peel concentrate to control microbiologsy in pork
Authors:He, Juping (1); Zhao, Yong (2); Sun, Xiaohong (2); Wu, Vivian Chi-Hua (2); Tang, Xiaoyang (2); Pan, Yingjie (2)
Author affiliation:(1) College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; (2) China Food Department of Xuzhou Institute of Technology, Xuzhou 221008, China; (3) Department of Food science and Human Nutrition, University of Maine, Maine 04469-5735, United States
Corresponding author:Pan, Y.(yjpan@shou.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:242-246
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 possible use of burdock peel concentrate as a natural food preservative was studied by examining its antimicrobial effect on the growth of total bacteria and Listeria monocytogenes in pork. The crude fresh and Listeria monocytogenes inoculated pork was treated with burdock peel concentrate (per milliliter concentrate contained 500 mg burdock peel) in various concentration, 250, 500, 750, 1000 μL/mL. The total bacteria and Listeria monocytogenes count was detected at 0, 12, 24 and 48 h in 25°C and 0, 1, 3, 5, 7 d in 4°Cenvironment. The organoleptic evaluation was performed to study the organoleptic quality of pork. The transmission electron microscopy (TEM) was used to study the effects of burdock peel concentrate on cellular structure of Listeria monocytogenes. Burdock peel concentrate showed significant (P<0.05) antimicrobial activities against total bacterial and Listeria monocytogenes in pork at 25°C, the antimicrobial activities was correlated positively with its concentration. Pork treated with 500 μL/mL burdock concentrate showed the preferable organoleptical quality. TEM revealed the damage to the bacterial cell walls and cellular content. Based on proven antimicrobial effects, burdock concentrate may have applications as a food preservative.
Number of references:20
Main heading:Quality control
Controlled terms:Agricultural wastes - Bacteria - Cell membranes - Food additives - Food preservatives - Meats - Microorganisms - Transmission electron microscopy
Uncontrolled terms:Anti-bacteria - Burdock - Electron microscopy analysis - Listeria monocytogenes - Organoleptic evaluation - Pork
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology - 741.3 Optical Devices and Systems - 821.5 Agricultural Wastes - 822.3 Food Products - 913.3 Quality Assurance and Control
DOI:10.3969/j.issn.1002-6819.2011.z2.046
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 37>
Accession number:20121314900380
Title:Development situation and trend analysis of grain drying of China in rural area
Authors:Wu, Wenfu (1); Liu, Chunshan (1); Han, Feng (1); Dai, Luying (3); Li, Junxing (1); Zhang, Yaqiu (1)
Author affiliation:(1) College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China; (2) College of Mechanical Engineering, Jiamusi University, Jiamusi 154007, China; (3) Chinese Academy of Agricultural, Beijing 100125, China; (4) Jilin Provincial Academy of Agricultural Machinery, Changchun 130022, China
Corresponding author:Zhang, Y.(yaqiu@jlu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:321-325
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:Several grain storage problems were analyzed in the article in the existing grain storage security system in China, due to the loss of the grain postpartum, and the backward technology and equipment. Relevant data and charts from Jilin Province, taken as an example of China's major grain producing area, were discussed. The discussion showed that it was necessary to develop the grain drying technology and equipment in grain producing areas. From the current national policy about the grain drying and storage, and the situation of the present grain drying technology, China has the ability to popularize the mechanical grain drying in different rural areas with the supporting techniques. Experts suggest that it takes about 10 years to carry out the project as "Popularizing the Mechanical Grain Drying in Rural Areas" with its aim of "One village with one dryer, and one family with one storage granary", to replenish the state grain depot, and establish the high efficiency and low loss system of national security grain storage system with the Chinese characteristics.
Number of references:16
Main heading:Drying
Controlled terms:Energy storage - Grain (agricultural product) - Network security - Rural areas
Uncontrolled terms:Chinese characteristics - Grain depot - Grain drying - Grain storage - Jilin Province - Low loss - National policies - National security - Trend analysis
Classification code:642.1 Process Heating - 702 Electric Batteries and Fuel Cells - 723 Computer Software, Data Handling and Applications - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2011.z2.062
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 38>
Accession number:20121314900320
Title:Separation test of electrostatic separating device for machine-harvested seed cotton and plastic film residue
Authors:Guo, Shuxia (1); Kan, Za (1); Zhang, Ruoyu (1); Guo, Wensong (1); An, Honglei (1); Cong, Tengda (1)
Author affiliation:(1) Key Laboratory for Agricultural Machinery of Xinjiang Production and Construction Corps, College of Machinery and Electricity Engineering, Shihezi University, Shihezi 832000, China
Corresponding author:Kan, Z.(kz-shz@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:6-10
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:Effect of electrode plates interval, separation voltage, high voltage discharge electrode spacing and charge time on separation efficiency of electrostatic separating device for plastic film residue and seed cotton were studied by single factor experiments, the results showed that electrode plates interval, separation voltage, and charge time had a significant effect on separation efficiency. The separation rate conditions were optimized by response surface analysis at three factors and three levels, and the corresponding regression model was also established. The results showed that when the charge time was 2.71 s, the separation voltage was -30 kV, the electrode plates interval was 14.75 cm, they were best parameter combination and the separation rate was 96.8%. It can provide a foundation for further realizing efficient separation of plastic film residue and seed cotton.
Number of references:18
Main heading:Separation
Controlled terms:Cotton - Electronic equipment testing - Electrostatics - Experiments - Plastic films - Regression analysis - Separators - Static electricity - Surface analysis
Uncontrolled terms:Electrode plates - High-voltage discharges - Influencing factor - Parameter combination - Regression model - Response surface analysis - Seed cotton - Separation efficiency - Separation rate - Separation voltage
Classification code:922.2 Mathematical Statistics - 901.3 Engineering Research - 819.1 Natural Fibers - 817.1 Polymer Products - 951 Materials Science - 802.3 Chemical Operations - 715 Electronic Equipment, General Purpose and Industrial - 701.1 Electricity: Basic Concepts and Phenomena - 423 Non Mechanical Properties and Tests of Building Materials - 802.1 Chemical Plants and Equipment
DOI:10.3969/j.issn.1002-6819.2011.z2.002
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 39>
Accession number:20121314900367
Title:Effects of metal endopeptidase in alfalfa on protein degradation of ensiling process
Authors:Tao, Lian (1); Zhou, He (1); Guo, Xusheng (2); Yu, Zhu (1)
Author affiliation:(1) Department of Grassland Science, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (2) Key Laboratory of Arid and Grassland Ecology, Ministry of Education, Lanzhou University, Lanzhou 730000, China
Corresponding author:Zhou, H.(zhouhe@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:258-262
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Effects of metal endopeptidase on protein degradation of alfalfa silage was investigated in this study. After adding metal protease inhibitor EDTA in the previously fermented alfalfa juice (PFJ), samples of each treatment were opened on day 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 7 and 14 d and the protein components were analyzed. Results showed that non-protein nitrogen (NPN), NH<inf>3</inf>-N, amino acid nitrogen (AA-N) and pH value in EDTA treatment significantly decreased during ensiling process, but lactic acid concentration increased. On day 14, the concentrations of NPN, NH<inf>3</inf>-N and AA-N of EDTA treatment were 483.98 g/kg total nigrogen (TN), 256.98 g/kg TN and 26.11 g/kg TN, which decreased by 28.92%, 38.59% and 67.08% respectively compared with the control. Metal endopeptidase plays a role on the degradation of NPN during proteolysis process of ensiled alfalfa to some extent. Adding metal endopeptidase inhibitor can improve the fermentation quality of alfalfa silage.
Number of references:20
Main heading:Metals
Controlled terms:Amino acids - Degradation - Fermentation - Lactic acid - Proteins - Proteolysis
Uncontrolled terms:Acid concentrations - Alfalfa - Alfalfa silage - pH value - Protease inhibitor - Protein components - Protein degradation - Silage
Classification code:461.9 Biology - 531 Metallurgy and Metallography - 802.2 Chemical Reactions - 804.1 Organic Compounds
DOI:10.3969/j.issn.1002-6819.2011.z2.049
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 40>
Accession number:20121314900386
Title:China biogas industry-challenges and future development
Authors:Li, Xiujin (1); Zhou, Bin (2); Yuan, Hairong (1); Pang, Yunzhi (1); Meng, Ying (1)
Author affiliation:(1) Center for Resources and Environmental Research, Beijing University of Chemical Technology, Beijing 100029, China; (2) Administrative Center for China's Agenda 21, Beijing 100036, China
Corresponding author:Pang, Y.(pangyz@mail.buct.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:352-355
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:The problems existed in the development process of biogas industry in China were analyzed. It is believed that the biogas industry in China is currently in the critical period and needs to transfer to a new development direction. In order to develop greatly and strongly, biogas industry in China has to go on the tracks of industrialization and commercialization. The future development will focus on the new development model, industrialization and commercialization strategies, key technology and equipment research and development, and integrated economical policy etc.
Number of references:15
Main heading:Industry
Controlled terms:Agricultural wastes - Biogas
Uncontrolled terms:Critical periods - Development directions - Development model - Development process - Key technologies - Research and development - Transfer
Classification code:821.5 Agricultural Wastes - 911 Cost and Value Engineering; Industrial Economics - 912 Industrial Engineering and Management - 913 Production Planning and Control; Manufacturing
DOI:10.3969/j.issn.1002-6819.2011.z2.068
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 41>
Accession number:20121314900337
Title:Decision-making system for wheat precision fertilization based on WebGIS
Authors:Xu, Xin (1); Zhang, Hao (1); Xi, Lei (1); Ma, Xinming (1); Wang, Jucai (1)
Author affiliation:(1) College of Information and Management Science, Henan Agricultural University, Zhengzhou 450002, China; (2) College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
Corresponding author:Ma, X.(xinmingma@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:94-98
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 precision agriculture technology for wheat, a decision-making system for wheat precision fertilization based on WebGIS, basing on soil testing and formulated fertilization with Web Services, metadata, spatial interpolation and AJAX technology, running on. NET, was produced with software VS2005 ArcGIS 9.3 and SQL Server 2005 in this paper. A four-layer framework has been adopted in the system which has the function of information querying and positioning, precision fertilization, prescription information publishing and sharing etc. After analyzing the precision fertilization data on wheat from 22 villages and towns in Huaxian city of Henan province, the system successfully offered a decision for wheat prescription information and published it on the web in a real-time way which directly makes the drawing, generating and publishing of prescription map to a semi-automatic level. It has been proved from this experience that metadata-based prescription map can be shared among systems and data sources freely without being limited to GIS platform.
Number of references:21
Main heading:Metadata
Controlled terms:Decision making - Information use - Soil testing - Web services
Uncontrolled terms:AJAX technology - Data source - Decision-making systems - Henan Province - Precision agriculture technology - Precision fertilization - Prescription map - Semi-automatics - Spatial interpolation - SQL Server 2005 - Web-GIS - Wheat
Classification code:483.1 Soils and Soil Mechanics - 723 Computer Software, Data Handling and Applications - 903.3 Information Retrieval and Use - 912.2 Management
DOI:10.3969/j.issn.1002-6819.2011.z2.019
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 42>
Accession number:20121314900319
Title:Analysis of material character based on mesh roller-type cotton and film remnant separator
Authors:Guo, Wensong (1); Kan, Za (1); Zhang, Ruoyu (1); Guo, Shuxia (1); An, Honglei (1); Cong, Tengda (1)
Author affiliation:(1) Xinjiang Production and Construction Corps Agricultural Machinery Key Laboratories, College of Machinery and Electricity Engineering, Shihezi University, Shihezi 832000, China
Corresponding author:Kan, Z.(kz-shz@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:1-5
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:Mesh roller-type cotton and film remnant separator unites mesh rollers and force of wind to separate the film remnant. Studying of material properties of cotton and film remnant is of great importance for further study on the principle of separator. Using the theoretical analysis and the experimental research method, following results could be obtained: 1) relationship between cotton shape and suspension velocity; 2) critical equation between cotton shape and adsorption characteristic of mesh roller-type; 3) relationship between suspension velocity and remnant film area; 4) relationship between wind velocity and wind pressure on the two sides of film remnant. The results could provide theoretical foundation for further research.
Number of references:15
Main heading:Cotton
Controlled terms:Adsorption - Design - Rollers (machine components) - Separation - Separators - Wind effects
Uncontrolled terms:Absorption characteristics - Adsorption characteristic - Experimental research - Material properties - Material property - Mesh roller-type - Suspension velocity - Theoretical foundations - Wind pressures - Wind velocities
Classification code:408 Structural Design - 408.1 Structural Design, General - 601.2 Machine Components - 802.1 Chemical Plants and Equipment - 802.3 Chemical Operations - 819.1 Natural Fibers
DOI:10.3969/j.issn.1002-6819.2011.z2.001
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 43>
Accession number:20121314900377
Title:Extraction and antioxidant activities of flavonoids from Kalimeris indica
Authors:Zhang, Can (1); Zhang, Haihui (1); Wu, Yan (1); Duan, Yuqing (1); Zhang, Rui (1); Shao, Tingting (1); Chen, Jiehua (1)
Author affiliation:(1) School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Duan, Y.(dyq101@ujs.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:307-311
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:The subcritical water extraction technique for flavonoids from Kalimeris indica was studied, and the optimization of technological parameters were obtained by orthogonal experiments with flavonoids yield as index, and the antioxidant activities of flavonoids in the extracts were determined. The results were as follows: the flavonoids yield was 9.01% under the conditions of pressure 5.0 MPa, temperature 200°C, extraction time 25 min and the liquid-solid ratio 20 mL/g, while it was 5.12% and 7.13%, respectively by reflux extraction with water and ethanol. Compared with traditional method, subcritical water extraction method has obvious advantage in saving time and extraction rate. In addition, the flavonoids extracted from Kalimeris indica was found to be possessed power scavenging free radicals and antioxidant activities in the experiment concentration range. These results can provide references for the development of flavonoids extraction from Kalimeris indica.
Number of references:18
Main heading:Solvent extraction
Controlled terms:Agricultural products - Ethanol - Experiments - Extraction - Flavonoids - Free radicals - Optimization
Uncontrolled terms:Antioxidant activities - Concentration ranges - Extraction rate - Extraction time - Kalimeris indica - Liquid solids - Orthogonal experiment - Reflux extraction - Subcritical water extraction - Technological parameters
Classification code:802.3 Chemical Operations - 804 Chemical Products Generally - 804.1 Organic Compounds - 821.4 Agricultural Products - 901.3 Engineering Research - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2011.z2.059
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 44>
Accession number:20121314900379
Title:Study on laws of flavour during food processing
Authors:Zeng, Fanbin (1); Pan, Siyi (2)
Author affiliation:(1) College of Science, Huazhong Agriculture University, Wuhan 430070, China; (2) College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
Corresponding author:Pan, S.(pansiyi2007@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:316-320
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 get delicious food and give instruction to food process, the essence of food flavour was explored according to a great deal of food flavour experience. The influences of chemical composition of food on flavour were discussed, six flavour laws such as theory of main flavour, theory of suitable concentration, theory of equilibrium stimulation, theory of multi-level flavour, theory of flavour music and theory of stimulation passivation were summed up and explained by a lot of examples. The influences of physical properties of food such as texture, temperature, specific heat on flavour were also discussed.
Number of references:18
Main heading:Food processing
Controlled terms:Agricultural engineering - Agriculture - Flavors - Food products - Processing
Uncontrolled terms:Chemical compositions - Food process - Multi-level - Theory of equilibrium
Classification code:821 Agricultural Equipment and Methods; Vegetation and Pest Control - 822.2 Food Processing Operations - 822.3 Food Products - 913.4 Manufacturing
DOI:10.3969/j.issn.1002-6819.2011.z2.061
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 45>
Accession number:20121314900341
Title:Model construction and application for rice husk pyrolysis
Authors:Wang, Mingfeng (1); Jiang, Enchen (1); Zhang, Qiang (2); Li, Bosong (2); Xu, Xiwei (2); Liu, Min (2); Zhou, Ling (3)
Author affiliation:(1) College of Engineering, Northeast Agriculture University, Harbin 150030, China; (2) College of Engineering, South China Agriculture University, Guangzhou 510640, China; (3) School of Mechanical and Electrical Engineering, Tarim University, Alar 843300, China
Corresponding author:Jiang, E.
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:114-118
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The process of biomass continuous pyrolysis is efficient and suitable for industrialization. In the paper, the rice husk pyrolysis model was built and kinetics parameters were obtained based on thermo analysis data of rice husk pyrolyzed at heating rate range from 20 to 40°C/min and final temperature of 800°C. Three stages were included in the process of rice husk pyrolysis: waterloss and pre-pyrolysis, main pyrolysis and carbonization. The stages of waterloss and pre-pyrolysis and main pyrolysis were calculated by the piecewise model. The result showed that the process of waterloss and pre-pyrolys accorded with N-step reaction, while main pyrolysis stage accorded with J-M-A equation. The pyrolysis model was tested in and out of the heating rate range which was used for model building. The verification result showed that the model calculated data was close to the experiment data, the error of the calcuated data was less than 2.35%. So it demonstrated that the pyrolysis model has a wide adaptability, which can provide a theoretical foundation for the design of pyrolysis reactor. A continuous biomass pyrolysis reactor with variable screw pitch had been designed and manufactured based on the model. The rice husk powder pyrolysis on the reactor was studied and it showed that the reactor could run continuously and stably. However, with different calefactive process, the char yields obtained in continuous pyrolysis experiment was lightly different from the calculated and thermo analysis result.
Number of references:18
Main heading:Pyrolysis
Controlled terms:Carbonization - Chemical reactors - Experiments - Heating rate - Models - Thermoanalysis
Uncontrolled terms:Analysis results - Biomass pyrolysis - Char yield - Experiment data - Kinetics parameter - Model construction - Piece-wise - Pyrolysis model - Pyrolysis reactor - Rice husk - Theoretical foundations - Three stages - Verification results
Classification code:641.2 Heat Transfer - 801 Chemistry - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 901.3 Engineering Research - 902.1 Engineering Graphics
DOI:10.3969/j.issn.1002-6819.2011.z2.023
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 46>
Accession number:20121314900347
Title:Effect of mixing rates on anaerobic digestion performance of rice straw
Authors:Chen, Jiajia (1); Li, Xiujin (1); Liu, Yanping (1); Zhu, Baoning (1); Yuan, Hairong (2); Pang, Yunzhi (1)
Author affiliation:(1) Research Center for Resources and Environment, Beijing University of Chemical Technology, Beijing 100029, China; (2) Planting Industry Service Centre of Yanqing County of Beijing Municipality, Beijing 102100, China
Corresponding author:Pang, Y.(pangyz@mail.buct.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:144-148
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 efficiency of anaerobic digestion of rice straw, the effect of mixing rates on anaerobic digestion performance of rice straw was investigated in batch mode at the mesophilic temperature of 35°C. Three mixing rates of 120, 80 and 40 r/min were used. The results showed that anaerobic digestion performance was influenced significantly by mixing rates. The mixing rate of 120 r/min achieved biogas yield of 451.6 mL/g, which was 20%, and 107% higher than those of the mixing rates of 80 and 40 r/min respectively. The former technical digestion time T<inf>80</inf> (the time to reach 80% of the total production) was 46 days, which was 16 days shorter than that of the mixing rates of 80 r/min, implying the higher digestion efficiency. The proper pH and alkalinity at higher mixing rate enhanced the mass transfer and contributed to the higher biogas yield, more degradation of mass (TS and VS) and the stability of anaerobic system.
Number of references:15
Main heading:Anaerobic digestion
Controlled terms:Alkalinity - Biogas - Mixing - Straw
Uncontrolled terms:Anaerobic systems - Batch modes - Digestion efficiency - Digestion time - Mesophilic temperature - Mixing rates - Rice straws
Classification code:801.1 Chemistry, General - 802.2 Chemical Reactions - 802.3 Chemical Operations - 821.5 Agricultural Wastes
DOI:10.3969/j.issn.1002-6819.2011.z2.029
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 47>
Accession number:20121314900384
Title:Present situation and trends of wheat germ industrialization developing
Authors:Xu, Bin (1); Dong, Ying (1)
Author affiliation:(1) School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Dong, Y.(ydong@ujs.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:341-345
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:Comprehensive utilization of wheat germ (WG) has a great practical significance in relieving widespread shortage of protein and lipid resource, and raising the level of dietary nutrition and health of Chinese people. Firstly, the paper elaborates the exploitation status, resource distribution, quality difference and the existing problems of wheat germ exploitation in China. Then, the latest technology progress home and abroad is introduced in detail, including wheat germ efficient separation, stabilization, oil extraction, microbial fermentation of wheat germ, etc. Ultimately an integrated program is put forward, including the core extracting system of high purity wheat germ, on-line microwave stabilization of wheat germ, sub-critical fluid extraction of wheat germ oil, fermentative wheat germ meal for further preparation of anti-tumor function foods. The research is prospected to provide benificial reference for flour enterprises in better exploiting wheat germ resources.
Number of references:26
Main heading:Stabilization
Controlled terms:Extraction - Separation - Vegetable oils
Uncontrolled terms:Anti-tumors - Biological transformation - Chinese people - Existing problems - Fluid extraction - High purity - Integrated programs - Latest technology - Microbial fermentation - Oil extraction - Present situation - Resource distribution - Sub-critical - Wheat germ - Wheat germ oil
Classification code:802.3 Chemical Operations - 804.1 Organic Compounds - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2011.z2.066
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 48>
Accession number:20121314900330
Title:Effects of working pressure on hydraulic performances of labyrinth path emitters
Authors:Du, Shaoqing (1); Zeng, Wenjie (1); Shi, Ze (1); Liu, Yaoze (1); Li, Yunkai (1); Gao, Fudong (2)
Author affiliation:(1) College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China; (2) Beijing Water Technology Center, Beijing 100073, China
Corresponding author:Li, Y.(liyunkai@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:55-60
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To decrease working pressure of drip irrigation emitter may become an efficient way of decreasing energy consumption and operating cost, but there are few emitters working under low pressure at present. Based on this, the products of 5 typical widely-used labyrinth path emitters were studied in the paper. The effects of different working pressures on hydraulic performances and energy dissipation characteristics of emitters were analyzed. The results showed that low pressure had some effect on flux coefficient and flow regime index, but the effect on flow regime index was insignificant. Flux coefficient of the same structure had prominent linear correlation with A/L<sup>2</sup>, which is a dimensionless number. However, flux coefficients of different flow paths had varied wildly. The flow states of 5 flow paths were turbulent flow with no flow transition. It was not appropriate to determine the flow state of flow path by critical Reynolds number which is 2200 in general.
Number of references:20
Main heading:Energy dissipation
Controlled terms:Energy utilization - Hydraulics - Irrigation - Pressure
Uncontrolled terms:Critical Reynolds number - Dimensionless number - Drip irrigation - Flow path - Flow regimes - Flow state - Flow transitions - Flux coefficients - Hydraulic performance - Labyrinth path - Linear correlation - Low pressures - On flow - Working pressures
Classification code:525.3 Energy Utilization - 525.4 Energy Losses (industrial and residential) - 632.1 Hydraulics - 821.3 Agricultural Methods - 931.1 Mechanics
DOI:10.3969/j.issn.1002-6819.2011.z2.012
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 49>
Accession number:20121314900381
Title:Research progress in wireless sensor network for agricultural environment monitoring
Authors:Han, Wenting (1); Wu, Pute (1); Yu, Xiaoqing (1); Zhang, Zenglin (1); Li, Ding (1)
Author affiliation:(1) Institute of Water Saving Agriculture in Arid regions of China, Northwest Agriculture and Forestry University, Yangling 712100, China; (2) Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
Corresponding author:Wu, P.(hanwt2000@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:326-330
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:Wireless sensor network (WSN) technology is a major solution for networking remote monitoring for multi-faceted variable of agricultural environment. The researches of WSN applications are focused on radio path-loss caused by distance between transmitter and receiver, as well as influences of the height of transmitters or receivers, plant canopy height and shape, so as to choose the reasonable parameters for system based on the research. The researches of wireless underground sensor network (WUSN) are focused on path-loss, error rate, the maximum transmission distance, the water content test error of multi-path transmission of electromagnetic waves, which are affected by meteorological environment, soil type, soil moisture content, soil structure and composition, burial depth of the node, node distance, frequency and power range, the network topology, routing algorithms, networking. According to the research, frequency of 300 MHz to 500 MHz, the maximum transmission distance of which can reach 5 m, is more appropriate for WUSN. Transmission distance is the main limiting factor for system in large scale. Transmission characteristics, channel models and path-loss of 433 MHz electromagnetic waves in different soils and air multi-media will be the focus of future researches. Based on that, we can choose the reasonable position of network nodes and optimal network topology under different agriculture environment.
Number of references:31
Main heading:Sensor nodes
Controlled terms:Agriculture - Electric network topology - Electromagnetic waves - Geologic models - Monitoring - Radio transmission - Research - Soil moisture - Soil testing - Transmitters
Uncontrolled terms:Agricultural environments - Burial depths - Channel model - Error rate - Limiting factors - Multi-Media - Multi-path transmission - Network node - Network topology - Node - Optimal network topology - Path loss - Plant canopies - Power range - Remote monitoring - Research progress - Soil structure - Soil types - Test errors - Transmission characteristics - Transmission distances - Transmission property - Transmitter and receiver - Wireless sensor network (WSN) - Wsn applications
Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 901.3 Engineering Research - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 716.3 Radio Systems and Equipment - 711 Electromagnetic Waves - 703.1 Electric Networks - 483.1 Soils and Soil Mechanics - 481.1 Geology - 716 Telecommunication; Radar, Radio and Television
DOI:10.3969/j.issn.1002-6819.2011.z2.063
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 50>
Accession number:20121314900323
Title:Effects of tillage managements, sowing depth and soil-covering on population quality and yield of mechanical sowing wheat under relay intercropping condition
Authors:Fan, Gaoqiong (1); Zheng, Ting (1); Chen, Yi (1); Li, Jingang (1); Wu, Zhongwei (1); Wang, Xiufang (1); Yang, Wenyu (1)
Author affiliation:(1) Agricultural College, Sichuan Agricultural University, Ya'an 625014, China
Corresponding author:Fan, G.(fangao20056@126.cm)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:20-25
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to research the corresponding agricultural measures of intercropping wheat mechanical sowing technology in hill areas, the effects of two different tillage managements (tillage, no-tillage), three sowing depth (2 cm, 5 cm, 8 cm) and soil-covering (no-soil-covering was CK) on population quality and yield were investigated. The results indicated that the magnitude order of the three agricultural measures was sowing depth>tillage managements> soil-covering. Population quality and yield index were positively correlated with sowing depth, and the optimal depth was 5, 8 cm the second. At 2 cm, tillers number and population size was small, and spike formation mainly depend on the main stem, furthermore, dry matter accumulation, LAI and yield significantly decreased. No-tillage treatment was better than tillage treatment. population size was enlarged by no-tillage treatment, what's more, post-anthesis dry matter accumulation, spike number, spike rate and yield significant increased. With soil-covering treatment, tillers number and post-anthesis dry matter accumulation increased, and that resulted in higher yield. In addition, the interaction effect of the three agricultural measures was significant. As far as the agricultural measures of intercropping wheat mechanical sowing in hill country is concerned, no-tillage, the 5 cm sowing depth and soil-covering are recommended to improve population quality and increase whole yield level.
Number of references:21
Main heading:Agricultural machinery
Controlled terms:Agriculture - Cultivation - Population statistics - Soils
Uncontrolled terms:Mechanical sowing - Plants - Relay intercropping wheat - Soil-covering - Sowing depth - Yield
Classification code:483.1 Soils and Soil Mechanics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2011.z2.005
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 51>
Accession number:20121314900353
Title:Effluent purification effect of system in sieve bend combined with four grade biological cleansing ponds in industrialized mariculture
Authors:Zhang, Zheng (1); Wang, Qingyin (2); Wang, Yingeng (2); Liao, Meijie (2); Jiang, Zhuo (2); Fan, Ruifeng (2); Qu, Jiangbo (3); Xu, Rongjing (3)
Author affiliation:(1) Collages of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; (2) Yellow Sea Fisheries Research Institute, Chinese Academic of Fishery Sciences, Qingdao 266071, China; (3) Tianyuan Aquatic Limited Corporation of Yantai Development Zone, Yantai 264006, China
Corresponding author:Wang, Q.(qywang@public.qd.sd.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:176-181
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Mariculture wastewater treatment effect was quantitatively measured in the "sieve bend combined with four grade biological cleansing ponds" wastewater treatment system in one indoor fish farm at Yantai city, Shandong province, China. Experiments results showed that the removal effect of suspended solids, total inorganic nitrogen and total inorganic phosphorus was obvious in this system. Dissolved oxygen, pH, conductance, temperature and salinity of the wastewater had reached the normal value of the natural seawater before discharge. The total amount of bacteria and vibrio showed a downward trend in different ponds along with the wastewater inflowing. Demersal unicellular algae in the biological cleansing ponds were rich regarding biodiversity. Farming sea cucumber in the last two wastewater treatment ponds also created significant economic benefits. It was demonstrated that this system with low construction costs and large wastewater treatment capacity was a suitable mode for land-based industrialized mariculture wastewater treatment in China.
Number of references:21
Main heading:Lakes
Controlled terms:Biodiversity - Effluents - Marine biology - Nitrogen removal - Phosphorus - Purification - Reclamation - Seawater - Sieves - Wastewater treatment
Uncontrolled terms:Biological cleansing - Construction costs - Economic benefits - Fish farms - Inorganic nitrogen - Inorganic phosphorus - Purification effect - Sea cucumber - Shandong province - Suspended solids - Total amount of bacteria - Unicellular alga - Wastewater treatment capacity - Wastewater treatment system
Classification code:804 Chemical Products Generally - 802.3 Chemical Operations - 605 Small Tools and Hardware - 471.4 Seawater, Tides and Waves - 471.1 Oceanography, General - 461.9 Biology - 461 Bioengineering and Biology - 454 Environmental Engineering - 452.4 Industrial Wastes Treatment and Disposal - 452.3 Industrial Wastes - 407 Maritime and Port Structures; Rivers and Other Waterways
DOI:10.3969/j.issn.1002-6819.2011.z2.035
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 52>
Accession number:20121314900378
Title:Supercritical CO<inf>2</inf> fluid extraction technology and fatty acid composition of blackberry seed oil
Authors:Liu, Xiaoli (1); Huang, Kaihong (1); Zhou, Jianzhong (1); Zhu, Jiana (1); Meng, Lu (1)
Author affiliation:(1) Institution of Farm-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Corresponding author:Huang, K.(jaashuang@hotmail.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:312-315
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 obtain high-quality healthy oil, supercritical CO<inf>2</inf> fluid extraction was used to extract oil from blackberry seeds, and GC-MS was used to analyze the fatty acid composition of the oil. The optimum extraction parameters were confirmed as follows: material grind degree 60 mesh, extraction pressure 20 MPa, separation pressure 10 MPa, temperature 45°C, and extraction time 30 min. Under the above conditions, the yield of oil was (17.73±0.19)%. GC-MS analysis revealed that blackberry seed oil is rich in unsaturated fatty acid, especially linoleic acid (58.04%), oleic acid (11.76%) and linolenic acid (8.38%), accounting for 78.18% of the total fatty acid. The results can provide a reference for the comprehensive usage of black berry seeds.
Number of references:14
Main heading:Oils and fats
Controlled terms:Agricultural products - Carbon dioxide - Fatty acids - Linoleic acid - Oleic acid - Seed - Supercritical fluid extraction - Unsaturated fatty acids
Uncontrolled terms:Blackberry seed oil - Extraction pressure - Extraction time - Fatty acid composition - Fluid extraction - GC-MS - GC-MS analysis - High quality - Linolenic acids - Seed oil - Super-critical - Supercritical CO
Classification code:802.3 Chemical Operations - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2011.z2.060
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 53>
Accession number:20121314900340
Title:Particulate matter emission and its pyrolysis kinetic analysis of ethanol-diesel engine
Authors:Wang, Jiaquan (1); Sun, Ping (1); Mei, Deqing (1); Guo, Linshan (2)
Author affiliation:(1) School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China; (2) Weichai Power Yangzhou Diesel Engine Co. Ltd., Yangzhou 225009, China
Corresponding author:Wang, J.(15952813110@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:110-113
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 thermo gravimetric and kinetic characteristics of particulate matter (PM) of diesel engine fueled with 0# diesel and ethanol diesel were studied by using thermo gravimetric analysis (TGA). Results show that adding ethanol to diesel fuel can help reduce the PM emission of diesel engine. The carbon oxidation mainly included three stages, water evaporation, oxidation of soluble substances and solid carbon oxidation. The contents of solid carbon and soluble substances were about 70% and 25% of total PM. The activation energy of PM of diesel engine fueled with 0# diesel was 130.3 kJ/mol, and that of ethanol diesel was 122.9 kJ/mol through the kinetic analysis by Coats-Redfern method. The linear regression coefficient of two fitted curves was over 0.99.The research can provide a theoretical basis for the development of efficient particulate matter catalysts and appropriate selection of renewable technologies of diesel particulate filter.
Number of references:14
Main heading:Diesel engines
Controlled terms:Activation energy - Carbon - Diesel fuels - Ethanol - Ethanol fuels - Kinetics - Oxidation - Thermogravimetric analysis
Uncontrolled terms:Carbon oxidation - Coats-Redfern method - Diesel particulate filters - Kinetic analysis - Kinetic characteristics - Linear regression coefficients - Particulate Matter - Particulate matter emissions - PM emissions - Pyrolysis kinetics - Renewable technology - Solid carbon - Soluble substances - Theoretical basis - Three stages - Water evaporation
Classification code:931 Classical Physics; Quantum Theory; Relativity - 804 Chemical Products Generally - 802.2 Chemical Reactions - 931.3 Atomic and Molecular Physics - 801.4 Physical Chemistry - 612.2 Diesel Engines - 523 Liquid Fuels - 801 Chemistry
DOI:10.3969/j.issn.1002-6819.2011.z2.022
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 54>
Accession number:20121314900371
Title:Optimum conditions of producing collagen polypeptide chelated Ca using pig bone
Authors:Zhao, Yanyan (1); Hu, Linlin (1); Jiang, Shaotong (1)
Author affiliation:(1) School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author:Zhao, Y.(zhaoyy33@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:277-281
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to take full advantage of pig bones resources, using pig bones as raw material to produce collagen polypeptide chelated Ca, the optimal conditions were studied in the paper. First, bone meal was hydrolyzed through lactic bacteria fermenting, and taking the content of Ca in the ferment liquid as indicator, the optimum extraction conditions were determined as that amount of sucrose, temperature, rotate speed, adding amount of strain and ferment time were 7%, 35°C, 120 r/min, 12% and 18 h, respectively. Then the concentrated ferment liquid under previous optimized conditions was chelated with collagen polypeptide, through single factor experiments and response surface analysis, the optimal chelate conditions were confirmed as follow: pH value 7.9, temperature 40°C, ratio of concentrated liquid to collagen polypeptide liquid 7:1, time of chelate 4 h and adding multiple of alcohol 11.Under these conditions, the chelate radio reached to 79.9%. The research can provide a reference for further developing of pig bones.
Number of references:14
Main heading:Chelation
Controlled terms:Bone - Calcium - Collagen - Fermentation - Liquids - Mammals - Optimization - Sugar (sucrose) - Surface analysis
Uncontrolled terms:Bone meal - Collagen polypeptide - Collagen polypeptides - Extraction conditions - Optimal conditions - Optimized conditions - Optimum conditions - pH value - Pig bone meal - Response surface analysis - Rotate speed
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 921.5 Optimization Techniques - 822.3 Food Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 802.2 Chemical Reactions - 549.2 Alkaline Earth Metals - 461.2 Biological Materials and Tissue Engineering
DOI:10.3969/j.issn.1002-6819.2011.z2.053
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 55>
Accession number:20121314900375
Title:Recognition method of liquor brands based on principal component and linear discriminant analysis
Authors:Huo, Danqun (1); Zhang, Miaomiao (1); Hou, Changjun (1); Qin, Hui (1); Yin, Mengmeng (1); Shen, Caihong (2); Zhang, Suyi (1); Lu, Zhongming (1); Zhang, Liang (2)
Author affiliation:(1) Key Laboratory of Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China; (2) National Engineering Research Center of Solid-State Brewing, Luzhou 646000, China; (3) Luzhoulaojiao Group Co. Ltd., Luzhou 646000, China
Corresponding author:Huo, D.(huodq@cqu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:297-301
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:Flavor substances determine the difference of the liquors. A recognition method for liquor brands discrimination was developed based on gas chromatography (GC) detection combining with pattern recognition in this study. First, 70 samples' GC data from seven liquors were collected. Ten kinds of basic flavor substances including ethyl caproate and ethyl lactate were analyzed qualitatively and quantitatively. Then, principal components analysis was used to testify the discrimination ability based on the GC quantitative data of the 10 flavor substances. Finally, linear discriminant analysis was used to establish discriminant functions in order to differentiate the liquors. The results showed that both methods can differentiate liquors. In principal components analysis, the first three principal components accounted for 86.527% of total variation, which can effectively describe the complicated relationship between flavor substances and products. The precision rate of linear discriminant analysis was 100%, which can correctly discriminate all the samples, and the correct discriminate rate for new samples is 93.9%. The results show that established discriminant functions can effectively differentiate liquors. According to the study, the method of GC technique combining with pattern recognition can be used to identify and differentiate liquors.
Number of references:14
Main heading:Principal component analysis
Controlled terms:Flavors - Gas chromatography - Pattern recognition
Uncontrolled terms:Discriminant functions - Discrimination ability - Ethyl lactate - Flavor substances - Linear discriminant analysis - Liquors - Precision rates - Principal component analysis (PCA) - Principal Components - Principal components analysis - Quantitative data - Recognition methods - Total variation
Classification code:716 Telecommunication; Radar, Radio and Television - 801 Chemistry - 822.3 Food Products - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2011.z2.057
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 56>
Accession number:20121314900365
Title:Effects of ultra-high pressure processing on sterilization and quality attributes of spiced goose gizzard
Authors:Xie, Huadong (1); Bu, Lijun (1); Ge, Liangpeng (1); Zhang, Xiaochun (1); Lin, Baozhong (1); Peng, Xiangwei (2); Du, Jinping (3)
Author affiliation:(1) Food Processing Institute, Chongqing Academy of Animal Sciences, Chongqing 402460, China; (2) Poultry Institute, Chongqing Academy of Animal Sciences, Chongqing 402460, China; (3) Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Corresponding author:Xie, H.(xiehuadong2004@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:247-252
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 reveal the effects of ultra-high pressure (UHP) processing on sterilization and quality of spiced goose gizzard, the spiced goose gizzard were treated by UHP at 100, 200, 300, 400, 500 and 600 MPa for 15 minute, and the untreated samples (CK) were used as control group. Samples were stored at room temperature (20±5)°C, then microbiological index of total bacteria, escherichia coli, salmonella were measured 1, 5, 9 days after treatment, meanwhile, the physicochemical index of pH value, tenderness, color and the sensory index were analyzed on the treated and control gizzard. The results showed that total number of bacteria declined with the increase of pressure (100-600 MPa); the growth of escherichia coli and salmonella could be effectively inhibited at more than 400 MPa for 15 minute; 200-500 MPa have no significant effect on pH value (P>0.05), pH value of the treated and control group showed downtrend during 9 days storage period, pH value of center point was higher than which of peripheral position. UHP processing had no significant effect on tenderness (P>0.05); Compared with CK, UHP processing had significant effect (P<0.05) on color of samples' surface. The result of sensory analysis showed that there was no significant difference on taste, smell and texture between the treated group and CK. It is concluded that UHP processing can effectively inactivate the microbe and maintain the flavor and quality of spiced goose gizzard.
Number of references:26
Main heading:Quality control
Controlled terms:Energy storage - Escherichia coli - Meats - Microorganisms - pH effects - Salmonella - Sterilization (cleaning)
Uncontrolled terms:After-treatment - Center points - Control groups - Peripheral positions - pH value - Physicochemical indices - Quality attributes - Room temperature - Sensory analysis - Spiced goose gizzard - Storage periods - Ultrahigh pressure
Classification code:461.9 Biology - 702 Electric Batteries and Fuel Cells - 801.1 Chemistry, General - 822.2 Food Processing Operations - 822.3 Food Products - 913.3 Quality Assurance and Control
DOI:10.3969/j.issn.1002-6819.2011.z2.047
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 57>
Accession number:20121314900359
Title:Effects of organic matter on natural-remediation process of typical copper-zinc polluted soils
Authors:Wu, Man (1); Liu, Junling (1); Xu, Minggang (1); Zhang, Wenju (1); Wu, Haiwen (1)
Author affiliation:(1) Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Corresponding author:Xu, M.(mgxu@caas.ac.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:211-217
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 clarify the effect of soil organic matter (SOM) on natural-remediation of the polluted soils, the remediation processes of copper (Cu) and zinc (Zn) in three kinds of contaminated typical soil of China were studied by incubation under controlled condition. The soils were red soil, fluvo-aquic soil and black soil, taken from 3 long-term fertilization experiments, with different SOM contents. 400 mg/kg Cu, 500 mg/kg Zn were added in soil samples and the incubation time were 90 d. Results showed that, in all soil samples, concentrations of soil available Cu or Zn decreased rapidly within the first 10-20 d, then the rate of decrease slowed down in short time, and dynamic balance were achieved after 30-60 d. The remediation process of Cu or Zn contaminated soils could be simulated by the second-order equation. After 90 days incubation, equilibrium concentrations of Cu in the low SOM content treatments in red soil and fluvo-aquic soil were 24.2%-57.1%, which were higher than those in high SOM content treatments. However, in black soil and fluvo-aquic soil, the equilibrium concentration of Zn in high SOM content treatment was 3.44-6.33 times of those in low SOM content treatment. This result implied different effects of increased SOM in the three kinds of soil. In red soil, the increased SOM repressed the availability of Cu; In fluvo-aquic soil, the increased SOM repressed the available Cu and promoted available Zn; And in black soil, the increase of SOM promoted the availability of both Cu and Zn. In fluvo-aquic soil, the remediation velocity was the largest, dynamic balance time was the shortest, and the equilibrium concentration of Cu and Zn in fluvo-aquic soil was lowest in the three kinds of soil, while such parameters in red soil were opposite. In conclusion, increasing SOM can be one of effective ways to decrease the availability of Cu in red soil and fluvo-aquic soil, whereas might increase the risk of environmental Zn pollution in black soil and fluvo-aquic soil.
Number of references:22
Main heading:Soil pollution
Controlled terms:Biogeochemistry - Biological materials - Copper - Organic compounds - Pollution - Remediation - Soil pollution control - Soil surveys - Soils - Zinc
Uncontrolled terms:Black soil - Contaminated soils - Controlled conditions - Different effects - Dynamic balance - Equilibrium concentration - Incubation time - Long-term fertilization - Polluted soils - Red soils - Second-order equation - Soil organic matters - Soil sample - Typical soils
Classification code:804.1 Organic Compounds - 546.3 Zinc and Alloys - 544.1 Copper - 483.1 Soils and Soil Mechanics - 481.2 Geochemistry - 461.2 Biological Materials and Tissue Engineering - 454.2 Environmental Impact and Protection
DOI:10.3969/j.issn.1002-6819.2011.z2.041
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 58>
Accession number:20121314900385
Title:Soil ecological problem and its resolvent in greenhouse horticulture
Authors:Li, Pingping (1)
Author affiliation:(1) Key Lab. of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Zhenjiang 212013, China; (2) College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
Corresponding author:Li, P.(lipingping@ujs.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:346-351
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:Greenhouse horticulture developed very quickly in China, and it has been an important model of high production and high economic return of agriculture. But with the more than 30 years practice of greenhuose cultivation, some serious ecological problems emerged, including soil secondary salinization, unbalance of N, P, K nutrient, obstacles of continuous cropping, exceeding criterion of nitrate content and so on. According to these problems, the clean production strategy was put forward, such as applying fertilizer scientifically and balanced according to the soil fertility and crop requirement, adopting high efficient water resource utilization technique e. g. drip irrigation of nutrient liquid, using rotation, grafting and organic substrate soilless culture technique to prevent continuous cropping obstacle, and to adopt integrating management technology of combining agronomic, physical and chemical method to prevent and cure plant disease and pest insect.
Number of references:48
Main heading:Geologic models
Controlled terms:Cultivation - Ecology - Fertilizers - Greenhouses - Irrigation - Nitrates - Nutrients - Soils - Water resources
Uncontrolled terms:Chemical method - Clean production - Continuous cropping obstacle - Drip irrigation - Ecological problem - Economic returns - Horticulture - Management technologies - Organic substrate - Plant disease - Soil fertility - Soil-less culture - Water resource utilization
Classification code:821.3 Agricultural Methods - 804.2 Inorganic Compounds - 804 Chemical Products Generally - 821.6 Farm Buildings and Other Structures - 483.1 Soils and Soil Mechanics - 454.3 Ecology and Ecosystems - 444 Water Resources - 481.1 Geology
DOI:10.3969/j.issn.1002-6819.2011.z2.067
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 59>
Accession number:20121314900344
Title:Efficiency analysis of oil or gas boiler with wood-pellet fuel substitution
Authors:Chen, Xilong (1); Li, Jiping (1); Wang, Yiqiang (1); Yan, Yonglin (1); Tan, Yuehui (1); Gao, Zicheng (1); Li, Jianjun (1)
Author affiliation:(1) Research Institute of Bio-Energy, Central South University of Forestry and Technology, Changsha 410004, China
Corresponding author:Chen, X.(chenxilg@vip.qq.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:131-134
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 benefits of wood-pellet fuel application, the energy cost per unit of conventional energy and wood-pellet fuel was analyzed, and operation costs in the typical boilers were analyzed. Results showed that all operation costs of wood-pellet fuel were 32.95% of oil fuel costs, 67.41% of gas fuel costs in civil and industrial boilers. If 10% of water boilers fueled with oil in China were replaced with wood-pellet fuel, the operation cost would reduce 6 billion Yuan per year, or 1.425 billion Yuan per year for gas fuel boilers, and emission of greenhouse gas (CO<inf>2</inf>) would reduce 4.4 million ton per year. Tremendous economic and environmental benefits would be got by extending application of wood-pellet fuel in tourist areas or big and medium-sized cities.
Number of references:15
Main heading:Gas fuel analysis
Controlled terms:Boilers - Carbon dioxide - Cost benefit analysis - Fuel oils - Fuels - Gas fuels - Gas oils - Greenhouse gases - Operating costs - Pelletizing - Wood - Wood fuels
Uncontrolled terms:Benefit - Economic and environmental benefits - Efficiency analysis - Energy cost - Fuel applications - Fuel cost - Fuel substitution - Gas boilers - Industrial boilers - Operation cost - Tourist areas - Wood-pellet
Classification code:811.2 Wood and Wood Products - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 911 Cost and Value Engineering; Industrial Economics - 802.3 Chemical Operations - 523 Liquid Fuels - 522 Gas Fuels - 614 Steam Power Plants
DOI:10.3969/j.issn.1002-6819.2011.z2.026
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 60>
Accession number:20121314900355
Title:Phosphorus removal rules of duckweed plants in eutrophication water
Authors:Cai, Dongrong (1); Xu, Yanhua (1)
Author affiliation:(1) College of Environment, Nanjing University of Technology, Nanjing 210009, China
Corresponding author:Xu, Y.(guagua1220@gmail.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:187-190
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:Phosphorus, the cause of most eutrophication cases, is often the limiting factor of algae proliferation. The key point toward restoration of eutrophicated water body is phosphorus removal. Based on studies of phosphorus-absorption kinetics and dynamic absorption characteristics among three kinds of duckweed, the suitable one was identified for water bodies with various eutrophic levels. Experiment results indicated that kinetic characteristics of phosphorus-absorption of certain duckweed plants can be described by the Michaelis-Menten equation. In addition, it was found that Lemna minor has the highest value of 1/K<inf>m</inf> and is suitable for restoring water bodies slightly eutrophicacted. Spirodela polyrhiza, with the highest value of V<inf>max</inf> among the three, which can be used for restoration of the heavily eutrophicated water bodies. While Spirodela oligorrhiza, with low absorption rate and slow growth, is therefore unqualified for purification purpose.
Number of references:18
Main heading:Eutrophication
Controlled terms:Enzyme kinetics - Kinetics - Phosphorus - Restoration - Sewage
Uncontrolled terms:Absorption rates - Duckweed - Dynamic absorption - Keypoints - Kinetic characteristics - Lemna minor - Limiting factors - Michaelis-Menten equations - Phosphorus removal - Slow growth - Spirodela polyrhiza - Waterbodies
Classification code:931 Classical Physics; Quantum Theory; Relativity - 804 Chemical Products Generally - 802.2 Chemical Reactions - 453.1 Water Pollution Sources - 453 Water Pollution - 409 Civil Engineering, General - 402 Buildings and Towers
DOI:10.3969/j.issn.1002-6819.2011.z2.037
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 61>
Accession number:20121314900370
Title:Design of graphical configuration system for vacuum drying of lilies in Lanzhou
Authors:Nie, Zhigang (1); Liu, Chengzhong (1); Liu, Liqun (1); Zhang, Yubin (2); Bi, Yang (2); Zhang, Shenggui (2)
Author affiliation:(1) College of Information Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (2) College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China; (3) Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou 730070, China
Corresponding author:Liu, C.(liucz@gsau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:272-276
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to achieve the quality assurance such as the optimum management of various types of production data and high efficiency of monitoring during drying process, the concept of the graphical configuration was proposed. By abstracting of drying scene and dynamically reconfiguring of various types of process data, the graphical configuration system for vacuum drying of lilies in Lanzhou was developed. The system was based on Visual Graph toolkits and SQL 2005 database, and it was applied to engineering practice. And the way of network editing and controlling strategies of graphical configuration system was discussed. The results indicate that the system can enhance the optimum management of multi-source heterogeneous data and implement the high efficiency of monitoring during drying process to meet the user's demands for the intuitive interface.
Number of references:25
Main heading:Information management
Controlled terms:Drying - Graphical user interfaces - Quality assurance - Vacuum
Uncontrolled terms:Configuration - Configuration system - Controlling strategies - Drying process - Engineering practices - Heterogeneous data - Intuitive interfaces - Lily - Multisources - Process data - Production data - Vacuum drying - Visual Graph
Classification code:633 Vacuum Technology - 642.1 Process Heating - 722.2 Computer Peripheral Equipment - 903.2 Information Dissemination - 913.3 Quality Assurance and Control
DOI:10.3969/j.issn.1002-6819.2011.z2.052
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 62>
Accession number:20121314900361
Title:Changes of land quality based on system dynamics
Authors:Zhang, Zhen (1); Gao, Jinquan (2); Jian, Guangning (1); Wei, Chaofu (3)
Author affiliation:(1) Department of Management Engineering, Tianjin Institute of Urban Construction, Tianjin 300384, China; (2) Center for Popularization of Agricultural of Tianjin, Tianjin 300061, China; (3) College of Resources and Environment, Southwest University, Beibei 400716, China
Corresponding author:Zhang, Z.(zhangzhen1227@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:226-231
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to comprehensively analyze the changes of land quality affected by land consolidation and reveal the variation of land system caused by projects along with land problems, system dynamics was used to simulate the land quality changes based on Vensim software. The results showed that under current model, areas of grassland and garden were increased after land consolidation, and area of cultivated land firstly was increased and then decreased, while the land quality was improved at beginning and then deteriorated. Supposing the residual field ridge was changed into cropland and unutilized lands were exploited into cropland, the monetization representation of land quality, the ecological service value of cultivated lands and the total value reached maximum in 2012, and subsequently decreased. This monetization representation of land quality was also represented by the maximum value in various scenarios. The results can provide a basis for optimal allocation of land resources and promote the coordinative development of land, economic, social and ecological system.
Number of references:10
Main heading:System theory
Controlled terms:Ecology - Land use - Models
Uncontrolled terms:Cultivated lands - Current models - Ecological services - Ecological systems - Land quality - Land resources - Land Systems - Maximum values - Optimal allocation - Residual field - System Dynamics - Total values
Classification code:403 Urban and Regional Planning and Development - 454.3 Ecology and Ecosystems - 902.1 Engineering Graphics - 961 Systems Science
DOI:10.3969/j.issn.1002-6819.2011.z2.043
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 63>
Accession number:20121314900329
Title:Experiment on mechanical properties of cassava
Authors:Yang, Wang (1); Yang, Jian (1); Zheng, Xiaoting (1); Wang, Qiuyu (1); Jia, Fengyun (1); Zhao, Jiaqi (1)
Author affiliation:(1) College of Mechanical Engineering, Guangxi University, Nanning 530004, China
Corresponding author:Yang, J.(yangokok@gxu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:50-54
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 parameters of cassava mechanical properties are very important for the design, dynamic simulation and mathematical model of cassava harvester. Mechanical properties of cassava root and stem (South China 205) were tested experimentally by WDW3100 universal materials test machine. The data were analyzed by mathematical statistical analysis method. The results showed that cassava root could be considered as isotropic material. The average of root axial tensile strength, axial compression strength, radial compression strength, axial shear strength, radial shear strength, strength, axial elastic modulus and radial elastic modulus are 0.34, 0.74, 0.76, 0.22, 0.37, 2.66, 7.23, 7.22 MPa, respectively. Cassava stem could be considered as anisotropy material. The average of stem axial tensile strength, axial compression strength, radial compression strength, axial shear strength, radial shear strength, bending strength, axial elastic modulus and radial elastic modulus are 10.23, 6.26, 1.43, 1.86, 2.53, 10.80, 5.24, 35.36 MPa, respectively.
Number of references:16
Main heading:Elastic moduli
Controlled terms:Axial compression - Computer simulation - Mathematical models - Mechanical properties - Strength of materials - Tensile strength
Uncontrolled terms:Anisotropy materials - Axial tensile strength - Cassava - Cassava roots - Compression strength - Isotropic materials - Radial compression strength - South China - Test machine
Classification code:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 723.5 Computer Applications - 921 Mathematics - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2011.z2.011
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 64>
Accession number:20121314900346
Title:Influencing factors of rheological properties of photosynthetic bacteria hydrogen production system with sorghum straw
Authors:Jing, Yanyan (1); Zhou, Xuehua (1); Zhao, Minshan (1); Jiao, Youzhou (1); Zhang, Quanguo (1)
Author affiliation:(1) Key Laboratory of Renewable Energy of Agricultural Ministry, Henan Agricultural University, Zhengzhou 450002, China
Corresponding author:Zhang, Q.(zquanguo@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:139-143
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:Influence factors of rheological properties of rhodospirillaceae photosynthetic bacteria hydrogen production system were studied. The results showed that the degrees of biomass decomposition and utilization were related to bacteria quantity. Relative viscosity increased at first and then decreased with the hydrogen production time, and the optimum inoculation of photosynthetic hydrogen production was 20%-30%. Relative viscosity decreased with the temperature increasing. When the total mass of particles was constant, the interaction strength between the particles enhanced with the decrease of particle size, and the liquidity of the system decreased and relative viscosity increased. Meantime, when the concentration of ultramicro straw in the system increased, the particle spacing decreased, the effective volume ratio increased through collision, coacervation and polymerization among particles, and then the particles became very difficult to move freely. The relative viscosity increased with the increase of ultramicro straw concentration, which was benefit for photosynthetic hydrogen production. The results can provide a reference for research on mass transfer, heat transformation and velocity field distribution of photosynthetic hydrogen production system.
Number of references:21
Main heading:Hydrogen production
Controlled terms:Agricultural wastes - Bacteria - Hydrogen - Production engineering - Rheology - Velocity
Uncontrolled terms:Effective volume - Heat transformations - Hydrogen production systems - Influencing factor - Interaction strength - Particle spacing - Photosynthetic bacterias - Photosynthetsis - Relative viscosity - Rheological property - Sorghum straw - Total mass - Velocity field
Classification code:461.9 Biology - 522 Gas Fuels - 804 Chemical Products Generally - 821.5 Agricultural Wastes - 913.1 Production Engineering - 931.1 Mechanics
DOI:10.3969/j.issn.1002-6819.2011.z2.028
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 65>
Accession number:20121314900373
Title:Optimization on ultrasonic-assisted extraction technology of chlorophyll from radish leaf
Authors:Dong, Zhouyong (1); Zhou, Yajun (1); Ren, Hui (1)
Author affiliation:(1) College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China
Corresponding author:Dong, Z.(dongzhouyong3421@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:288-292
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Ultrasonic-assisted extraction was applied to extract chlorophyll from radish leaf. By means of Box-Behnken design with four factors (extraction temperature, ultrasonic power, liquid-solid ratio and extraction time) as influence factors, the optimal extraction technology was determined by the experiments. The results indicated that the yield of chlorophyll was affected obviously in decreasing order by liquid-solid ratio, extraction temperature, ultrasonic power and extraction time. The optimized ultrasonic-assisted extraction conditions of chlorophyll were obtained as follows: extraction temperature 73°C, ultrasonic power 175 W, liquid-solid ratio 13 mL/g, extraction time 46 min. Under the above mentioned conditions, the yield of chlorophyll from radish leaf was 0.413%. The experiment result was consistent with the prediction result. This research can provide a technical reference for chlorophyll extraction from radish leaf.
Number of references:17
Main heading:Chlorophyll
Controlled terms:Experiments - Extraction - Liquids - Optimization - Ultrasonics
Uncontrolled terms:Box-Behnken design - Chlorophyll extraction - Extraction conditions - Extraction technology - Extraction temperatures - Extraction time - Liquid solids - Radish leaf - Ultrasonic power
Classification code:753.1 Ultrasonic Waves - 802.3 Chemical Operations - 804.1 Organic Compounds - 901.3 Engineering Research - 921.5 Optimization Techniques - 931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.3969/j.issn.1002-6819.2011.z2.055
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 66>
Accession number:20121314900382
Title:Connotation and prediction method of grain production level
Authors:Ji, Xiang (1); Liu, Liming (1)
Author affiliation:(1) College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
Corresponding author:Liu, L.(liulm@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:331-335
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:Grain production level is significant for the research of grain security, which incorporates various connotations, but lack of an effective method to predict the level in current research. Comparative analysis and mathematics estimation were employed as the main methods in this research. To interpret the connotation of grain production level and establish the prediction method, firstly, the substantial connotation of grain production level was redefined though analysis and identifying the complex relation among grain yield, grain production capacity and grain production level. Then base on the mathematical analysis between grain production level and grain yield, prediction method was established. Taking 8 counties of Dongting Lake area as an example, grain production levels in 2007 and 2008 were predicted, and then the grain production was verified with grain yield. The results show that the discrepancies between grain production level and grain yield are consistent with the condition of that years. Furthermore, grain production levels of the 8 counties from 2011 to 2015 were predicted. The research can provide academic and methodological references to the grain production study.
Number of references:30
Main heading:Forecasting
Controlled terms:Grain (agricultural product) - Models - Production - Research
Uncontrolled terms:Comparative analysis - Dongting Lake area - Grain production - Grain production level - Grain security - Grain yield - Mathematical analysis - Prediction methods
Classification code:821.4 Agricultural Products - 901.3 Engineering Research - 902.1 Engineering Graphics - 913.2 Production Control - 921 Mathematics
DOI:10.3969/j.issn.1002-6819.2011.z2.064
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 67>
Accession number:20121314900348
Title:Acidic electrolyzed water's intensification and its application on corn stalk pretreatment
Authors:Cai, Chengye (1); Zhang, Jingsheng (1); Pei, Haisheng (1); Liu, Li (1); Hu, Jinrong (1); Sun, Junshe (1)
Author affiliation:(1) College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Sun, J.(sunjsh61@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:149-153
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 the effect of corn stalk pretreatments, the methods of enhancing the acidic electrolyzed water(AEW) property had been focused on, including low-temperature electrolysis at 0°C, magnetization before the electrolysis and pumping Cl<inf>2</inf> into the AEW. All of these methods could intensify the pH value and oxidation-reduction potential (ORP) value, respectively. Pumping Cl<inf>2</inf> into AEW had the best effects that the pH value could reach as much as 1.87 while ORP value reached 1226 mV. Using the intensified AEW(pH value 1.92, ORP value 1218 mV) to pretreat the corn stalk had got a better result that hemicellulose degradation rate could reach 68%, while original AEW (pH value 2.30, ORP value 1175 mV) reached 61%, and the hydrochloric acid (pH value 2.30) only reached 53%. For AEW getting a much better result than the hydrochloric acid with the same pH value, it had verified the oxidability played an important role in the hemicellulose degradation during lignocellulose pretreatment. This research would be an enlightenment in developing AEW application field and explore new methods for biomass pretreatment.
Number of references:19
Main heading:pH effects
Controlled terms:Cellulose - Chlorine - Degradation - Electrolysis - Hydrochloric acid - Magnetization - Redox reactions
Uncontrolled terms:Acidic electrolyzed waters - Application fields - Corn stalk - Hemicellulose degradation - Low-temperature electrolysis - Oxidation-reduction potentials - pH value - Pre-Treatment - Pre-treatments
Classification code:714.2 Semiconductor Devices and Integrated Circuits - 801.1 Chemistry, General - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 815.1.1 Organic Polymers
DOI:10.3969/j.issn.1002-6819.2011.z2.030
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 68>
Accession number:20121314900368
Title:Analysis of weight loss of fruits and vegetables in forced air precooling
Authors:Liu, Bin (1); Yin, Hui (1); Ye, Qingyin (1)
Author affiliation:(1) Tianjin Key Lab. of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, China
Corresponding author:Liu, B.(lbtjcu@tjcu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:263-266
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 water loss of fruits and vegetables in precooling is a mass transferring process affected by the heat transfer, it is important for reducing the weight loss of fruits and vegetables to analyze the affecting factors in forced air precooling. Combining with the integrate heat transferring equation of spherical fruits and vegetables, the coupling equation of heat and mass transfer of water loss was derived by analyzing the process of water loss of fruits and vegetables in precooling, including the factors of the parameters of fruits and vegetables and precooling conditions. The effects of the internal water diffusion coefficient, precooling air velocity and precooling air relative humidity on water loss were analyzed. The results show that the structure parameter is the key factor and the effect of the air velocity on the precooling time is significant. The water loss is mainly affected by the structure parameters of fruits and vegetables and decreases with the increase of air velocity. The result was verified by the experiment with apple, which had a similar result with the theoretical analysis.
Number of references:15
Main heading:Fruits
Controlled terms:Cooling - Factor analysis - Refrigeration - Vegetables - Water
Uncontrolled terms:Affecting factors - Air velocities - Coupling equations - Forced-air precooling - Heat and mass transfer - Key factors - Precooling - Structure parameter - Transferring process - Water diffusion coefficients - Water loss - Weight loss
Classification code:444 Water Resources - 641.2 Heat Transfer - 644.4 Cryogenics - 821.4 Agricultural Products - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2011.z2.050
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 69>
Accession number:20121314900333
Title:Simulation of climatic change impacts on yield potential of typical wheat varieties based on DSSAT model
Authors:Wen, Xinya (1); Chen, Fu (1)
Author affiliation:(1) College of Agriculture and Biotechnology, China Agricultural University, Beijing 100193, China
Corresponding author:Chen, F.(chenfu@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:74-79
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 yield potential of crops is closely related to variety and climate. Since 1950s there have been 4-5 variety renovations of winter wheat in China's major wheat-growing areas, with significant climate change occurring in the same period. The confounding effects of climate and variety factors have not been separately investigated. This paper, taking Shijiazhuang as an example, estimated yield potential of five widely-used winter wheat varieties from 1955 to 2008 using the model DSSAT4.0 and the trends in accumulated temperature, solar radiation, and precipitation at four growth stages were analyzed to investigate the effects of climate change and variety improvement on wheat yield potential. The results showed that climate change was not uniform at different growth stages and had different impacts on wheat yield potential. Except sowing-reviving period, increasing trend of the accumulated temperature above 0°C and decreasing trend of the solar radiation had significant negative effect on photothermal yield potential. Accumulated temperature during jointing-heading stage increased significantly, showing great influence on photothermal yield potential of the varieties bred before 1990 s. And Solar radiation heading-maturity period decreased significantly, showing great influence on photothermal yield potential of the varieties bred after 1990s. Rainfed yield of all varieties was lower than photothermal yield potential and significantly affected by precipitation from reviving to maturity, indicating that water was the limiting factor in the region. Increasing of precipitation during reviving-jointing stage had significant positive effect on rainfed yield.
Number of references:24
Main heading:Climate change
Controlled terms:Climate models - Computer simulation - Crops - Solar radiation - Sun
Uncontrolled terms:Climatic changes - Growth stages - Limiting factors - Photo-thermal - Rainfed - Simulation - Wheat variety - Wheat yield - Winter wheat - Yield potential
Classification code:921 Mathematics - 821.4 Agricultural Products - 723.5 Computer Applications - 657.2 Extraterrestrial Physics and Stellar Phenomena - 657.1 Solar Energy and Phenomena - 451 Air Pollution - 443 Meteorology
DOI:10.3969/j.issn.1002-6819.2011.z2.015
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 70>
Accession number:20121314900345
Title:Fir root dry distillation and composition of combustible gases
Authors:Zhu, Kai (1); Chen, Ke (1)
Author affiliation:(1) College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
Corresponding author:Zhu, K.(zhukai53@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:135-138
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 dry-distilled essential oil, wood vinegar, wood tar, charcoal and combustible gases were obtained from fir root by retorting. The release of non-condensable flammable gas in different temperature ranges and the composition of CO, CH<inf>4</inf>, H<inf>2</inf> and CO<inf>2</inf> were studied. Results showed that CO<inf>2</inf> was the main ingredients of non-condensable gas between 150-260°C, followed by CO; CO<inf>2</inf> content decreased significantly between 260-490°C; CH<inf>4</inf> levels increased significantly up to 26%; the final volume fraction of H<inf>2</inf> reached 12%; clean energy source with high thermal value mounted up to 6281 kJ/m<sup>3</sup> and the average thermal value more than 8374 kJ/m<sup>3</sup>. The Carbonization essential oil, wood vinegar, wood tar, charcoal and combustible gases were obtained with the yield of 9%, 33.5%, 5.5%, 32.9% and 15% respectively. All of the fir roots were converted into products with the total conversion rate more than 90% without waste. The method proposed in this paper realizes the comprehensive utilization of resources and green environmental protection.
Number of references:16
Main heading:Gases
Controlled terms:Acetic acid - Carbon dioxide - Carbonization - Charcoal - Coal tar - Distillation - Essential oils - Pyrolysis
Uncontrolled terms:Clean energy sources - Combustible gas - Conversion rates - Dry distillation - Fir root - Flammable gas - High thermal - Non-condensable gas - Temperature range - Thermal value - Wood tar
Classification code:931.2 Physical Properties of Gases, Liquids and Solids - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 802.3 Chemical Operations - 802.2 Chemical Reactions - 524 Solid Fuels - 411.2 Coal Tar
DOI:10.3969/j.issn.1002-6819.2011.z2.027
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 71>
Accession number:20121314900339
Title:Preparation of biochar adsorbent from straw and its adsorption capability
Authors:Zhang, Jiyi (1); Pu, Lijun (1); Li, Gen (2)
Author affiliation:(1) College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China; (2) Cscec Aecom Consultants Co. Ltd., Lanzhou 730000, China
Corresponding author:Pu, L.(pu80601091@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:104-109
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 find a new way of using discarded biomass materials, the wheat straw was used to prepare biochar adsorbent by means of carbonization at low and middle temperatures. Then, the Cu<sup>2 </sup> was taken as adsorbed substance to investigate the biochar adsorbent adsorption capability for heavy metal from the wastewater. The results showed that the biochar adsorbent prepared at low and middle temperatures (200-500°C) obtained higher productivity with less energy consumption, easier process, higher adsorption speed and short time to reach the adsorption equilibrium. At the same time, it was found that the longest time to reach the adsorption equilibrium was 3 h (P200), and the shortest time was just only 0.5 h (P500). The maximum adsorption capacity of P500 could reach to 11.19 mg/g at 30°C. The adsorption kinetic process was consistent with the Lagergren pseudo-second order kinetic model. The adsorption isotherm agreed well with the Langmuir formulae, and the separation factor (R<inf>L</inf>) located in the range of 0-1 for favored adsorption. The SEM results indicated that the pore deformation and the straw roughness increased as the carbonization temperature rising, which made the pore canal effect easier and the adsorption properties more excellent. The research can provide a reference for engineering application of biomass adsorbent.
Number of references:21
Main heading:Adsorption
Controlled terms:Adsorption isotherms - Carbonization - Copper - Energy utilization - Heavy metals - Isotherms - Straw
Uncontrolled terms:Adsorption capability - Adsorption capacities - Adsorption equilibria - Adsorption kinetics - Adsorption properties - Biochar - Biomass materials - Carbonization temperatures - Engineering applications - Langmuirs - Preparation - Pseudo-second-order kinetic models - Separation factors - Wheat straws
Classification code:821.5 Agricultural Wastes - 802.3 Chemical Operations - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 544.1 Copper - 531 Metallurgy and Metallography - 525.3 Energy Utilization
DOI:10.3969/j.issn.1002-6819.2011.z2.021
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
<RECORD 72>
Accession number:20121314900376
Title:Aroma quality discrimination of Xihu-Longjing tea by electronic nose
Authors:Shi, Bolin (1); Zhao, Lei (1); Zhi, Ruicong (1); Xi, Xingjun (1); Zhu, Dazhou (2)
Author affiliation:(1) Food and Agriculture Standardization Institute, China National Institute of Standardization, Beijing 100088, China; (2) National Engineering Research Center for Intelligent Agricultural Equipments, Beijing 100097, China
Corresponding author:Shi, B.(shibl@cnis.gov.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:SUPPL.2
Issue date:December 2011
Publication year:2011
Pages:302-306
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:According to electronic nose principle and aroma characteristic of Xihu-Longjing tea, the method of different tea grading discrimination based on electronic nose was investigated. The aroma of tea was prepared by mixing the tea and water in headspace vials, which could increase the respond information of electronic nose and decreasing the error of making tea. The parameters of headspace sampling and signal collecting were optimized, and the SNR of aroma fingerprint was improved. Different grading tea samples were measured with cross circulation array, with which to improve the suitability of the sensors of electronic nose and also eliminate the system error. After the samples were divided into calibration and prediction set, the SIMCA algorithm was used to build the classification model of tea grading. The results showed that the estimation accuracy reached to 95% for the model and proved that the intelligential classification method is applicable for Xihu-Longjing tea.
Number of references:18
Main heading:Artificial organs
Controlled terms:Agricultural products - Classification (of information) - Principal component analysis - Signal sampling
Uncontrolled terms:Aroma quality - Electronic NOSE - Headspaces - Principal component analysis (PCA) - Xihu-Longjing tea
Classification code:462.4 Prosthetics - 716.1 Information Theory and Signal Processing - 821.4 Agricultural Products - 922 Statistical Methods - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2011.z2.058
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.
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- 主管单位 中国科学技术协会
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