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Comparison of oil press for jatropha oil – a review
ram press strainer press cylinder-hole press
2015/5/18
As petrol will soon be exhausted in the near future, Jatropha is going to be one of the substitute candidates for future biodiesel production. Countries of South-East Asia, such as Malaysia, they are ...
Least developed countries – comparison
economic situation international trade foreign direct investments official development assistance remittances indicators of health
2014/3/31
The inter-related causes of food insecurity in these countries are mainly the long lasting civil wars, a limited access to land, environmental degradation, climatic shocks and the rapid population gro...
The comparison of the cost-rate and profitability of the agricultural products in the SR and CR
comparison costs yields economic result profit profitability
2014/3/29
The article deals with the comparison and evaluation of the development of economic indicators, such as the costs, yields, economic result and profitability in the Czech and Slovak Republics for the p...
浑善达克沙地天然植被蒸散量两种计算方法的比较（Comparison of Evapotranspiration of the Natural Vegetation in the Otindag Sandy Area Using Two Calculation Methods）
沙地 天然植被 蒸散量 SWAP模型
2010/12/29
以土壤-水分-大气-作物系统模拟模型——SWAP模型和FAO-56分册推荐的最新双作物系数法为基础，计算浑善达克沙地天然植被蒸散量。结果表明：SWAP模型和最新双作物系数法模拟的蒸散量结果相近，均可用于模拟蒸散量。SWAP模型能模拟土壤剖面的水分动态。
生物质颗粒燃料特性及其对燃烧的影响分析（Comparison on Characterization Effect of Biomass Pellet Fuels on Combustion Behavior）
生物质能 颗粒燃料 物理特性
2010/12/28
采用欧盟生物质固体成型燃料标准（CEN/TC 335）试验检测了中国和瑞典典型的10种生物质颗粒燃料，重点对中国的秸秆类颗粒燃料与瑞典的木质颗粒进行了对比，并分析其对燃烧特性的影响。结果表明中瑞两国的生物质颗粒燃料都能满足技术标准要求，瑞典木质颗粒具有较高的性能参数；中国的玉米秸秆颗粒燃料发热量比瑞典木质颗粒低20.9%，挥发分低，燃烧后灰渣中的硅含量高20%，灰熔点低，燃烧后灰分多，易结渣，对燃...
A Comparison of Recursive Least Squares Estimation and Kalman Filtering for Flow in Open Channels
Optimal control Least squares estimation Kalman flters Open-channel flow
2009/10/10
An integrated approach to the design of an automatic control system for canals using a Linear Quadratic Gaussian regulator based on recursive least squares estimation was developed. The one-dimensiona...
盘式吸渗仪吸渗率计算方法比较（Comparison among Permeability Methods of Disc Infiltrometer）
吸渗率 盘式吸渗仪 计算方法
2009/9/25
选用盘径为5cm和15cm的盘式吸渗仪，对杨凌塿土（粘土）和神木砂黄土（砂壤土）两种质地的土壤在0、－3、－6、－9、－12cm 水头5种负压下进行了室内吸渗实验，分析了不同盘径和负压对累积吸渗量的影响；并选用4种吸渗率公式对这两种质地土壤吸渗率进行了计算，以Vandervaere法为参考方法对该4种方法的适用性进行了分析。结果表明，在相同的时间内，两种土壤5 cm盘径下的累积吸渗量均大于15 c...
温度对柴油和二甲醚喷射系统性能的影响（Comparison of Diesel and DME Injection System Performances at Different Temperatures）
喷射系统 温度 柴油 二甲醚
2009/8/11
针对普通油泵—油管—油嘴燃油系统，建立了喷射系统的数学模型。对不同温度下柴油和二甲醚喷射系统性能进行了数值模拟。研究表明：在相同温度下，二甲醚喷嘴压力的上升和下降速率、压力峰值都比柴油低，20℃时二甲醚较柴油下降51.1%，50℃时较柴油下降45.2%，喷射速度和累积喷油量均远低于柴油，针阀开启时刻较柴油明显延后；在最大速度点，20℃和50℃时二甲醚分别较柴油下降38.8%和36.8%。随着温度的...
Comparison of Erosion and Runoff Predicted by WEPP and AGNPS Models Using a Geographic Information System
Modeling WEPP AGNPS Surface runoff Soil erosion
2009/1/13
The Water Erosion Prediction Project (WEPP) model and the Agricultural Non-Point-Source Pollution Model (AGNPS) were used in conjunction with a geographic information system (GIS) database to predict ...
Comparison of Irrigation Performance Based on the Basin, Crop Pattern, and Scheme Sizes Using External Indicators
Irrigation scheme comparative indicators basin crop pattern scheme size
2009/1/13
A comparative assessment allows screening of irrigation systems based on the key issues relative to performance and indicates where improvements should be made, such as in type of management, infrast...
Comparison of Different Irrigation Methods Based on the Parametric Evaluation Approach
Irrigation Parametric Evaluation Soil Characteristics Geographic Information System (GIS)
2009/1/12
The main objective of this research is to compare two different irrigation methods according to parametric evaluation system in the Field Plants Central Research Institute-Ikizce Research Farm's soils...
An Evaluation of Alternative Cotton Harvesting Methods in Northeast Louisiana - A Comparison of the Brush Stripper and Spindle Harvester
Evaluation Cotton Harvesting Methods Northeast Louisiana Comparison Brush Stripper Spindle Harvester
2008/12/15
In response to increases in cotton production costs, producers are seeking ways to reduce input expenses. Because brush strippers are less expensive to operate than spindle harvesters, research was pe...
Comparison of the best available technique indicators for processing animal tissues
IPPC BAT rendering plant environmental standard
2014/2/28
A method comparing the technologies used in the industry processing animal tissues with the best available techniques (BAT) based on the principle of an integrated pollution prevention and control (IP...
The comparison of the cost-rate and profitability of the agricultural products in the SR and CR
comparison costs yields economic result profit profitability
2014/3/29
The article deals with the comparison and evaluation of the development of economic indicators, such as the costs, yields, economic result and profitability in the Czech and Slovak Republics for the p...
Comparison of the value added development in the agricultural and food sectors and the efficiency of its creation
national economy production of foodstuffs agriculture, value added ntermediate consumption fixed assets
2014/3/29
The article summarises the results of the analysis of value added (VA) in agriculture and food industry and the share of intermediate consumption in the value added. The results show that during 1993–...