搜索结果: 1-15 共查到“工学 rapeseed”相关记录15条 . 查询时间(0.046 秒)
Determining rapeseed lodging angles and types for lodging phenotyping using morphological traits derived from UAV images
rapeseed lodging angles lodging phenotyping UAV images
2024/4/1
Crop lodging detrimentally affects crop yield and mechanical harvest efficiency. Traditional remote sensing-based methods primarily focus on the identification and area extraction of lodging using ima...
COMBINED ANALYSIS OF SENTINEL-1 AND RAPIDEYE DATA FOR IMPROVED CROP TYPE CLASSIFICATION:AN EARLY SEASON APPROACH FOR RAPESEED AND CEREALS
crop type mapping Sentinel-1 RapidEye agriculture Support Vector Machine Maximum Likelihood
2016/12/1
Timely availability of crop acreage estimation is crucial for maintaining economic and ecological sustainability or modelling purposes. Remote sensing data has proven to be a reliable source for crop ...
Effect of rapeseed methyl ester on emission production
biofuel ecology NRSC engine characteristic
2014/3/28
This paper describes the effect of a mixture of rapeseed methyl ester and diesel oil on emission production of tractor engine. The hydraulic dynamometer was used to load the engine of Zetor Forterra 8...
SPATIAL TEMPORAL SOWING PATTERN OF RAPESEED-MUSTARD CROP IN INDIA USING MULTI-DATE IRS AWIFS DATA
Rapeseed-Mustard Crop Crop Sowing Pattern Remote Sensing Multi-date IRS P6 AWiFS
2014/5/6
This paper highlights the results on spatial pattern of sowing of rapeseed/mustard in four major states in India using multidate Advanced Wide Field Sensor (AWiFS) data for 2010-11 crop season. Geo-re...
油菜分段收获脱粒清选试验（Experiment on Threshing and Cleaning in Two-stage Harvesting for Rapeseed）
油菜 分段收获 脱粒 清选
2010/12/28
对我国南方油菜分段收获割晒后的脱粒清选特性和脱粒清选参数进行了研究。通过在试验台上脱粒和清选正交试验，得出了分段收获捡拾脱粒机脱粒、清选部件形式和两组合理的工作参数。试验结果表明：脱粒分离夹带损失最小的优选参数组合为喂入量1.6kg/s、滚筒转速750r/min、脱粒间隙15mm、滚筒形式钉齿6排；影响脱粒分离夹带损失率的主次因素为滚筒形式、喂入量、脱粒间隙和滚筒转速。综合考虑清选损失率和含...
研究预处理对油菜籽细胞超显微结构以及油脂在细胞中存在状态的影响。以油菜籽为原料，借助透射电镜观察轧胚、蒸炒、膨化、压榨等预处理方式下的油菜籽细胞微观结构。研究表明，轧胚使油菜籽细胞受到明显挤压，由圆形变为椭圆形，并且细胞壁部分被破坏，少量脂滴聚集；蒸炒使细胞壁部分破裂且油脂的显微分散状态被破坏，由细小状态聚集成较大的油滴；膨化使细胞壁彻底破坏，细胞质被完全挤出，油脂由细小的油滴聚集成较大的油滴，且...
The effect of ethanol, petrol and rapeseed oil blends on direct injection diesel engine performance and exhaust emissions
diesel engine ethanol petrol rapeseed oil performance efficiency emissions smoke opacity
2010/10/29
The article deals with the testing results of a four stroke four cylinder, DI diesel engine operating on pure rapeseed oil (RO) and its 2.5vol%, 5vol% and 7.5vol% blends with ethanol (ERO) and petrol ...
为探讨气力式油菜精量排种器的性能参数的最佳匹配，以排种器的合格指数、重播指数、漏播指数、种子破碎率为评价指标，对排种盘转速、种子带速度、正压区以及负压区相对压力进行了单因素和正交试验。单因素试验表明：种子破碎率为零，排种盘转速、正压区压强、负压区压强三因素对合格指数、重播指数、漏播指数3项试验指标有显著影响。正交试验表明：正压区相对压力为440Pa，负压区相对压力为-834Pa，排种盘转速为15r...
醇法菜籽浓缩蛋白的微波改性试验（Microwave Modification of Alcohol Leached Rapeseed Protein Concentrate）
醇法菜籽浓缩蛋白 微波 氮溶解指数
2009/8/11
对醇法菜籽浓缩蛋白(RPC)进行了微波改性的试验。在单因素试验的基础上，采用L9(34)正交试验，以探讨pH值、菜籽浓缩蛋白质量分数、微波功率及改性时间对菜籽浓缩蛋白的氮溶解指数(NSI)的影响。通过正交试验确定了微波改性的最佳工艺条件为：菜籽浓缩蛋白质量分数5%、微波功率300W、改性时间1min和pH值10。最佳改性条件下改性菜籽浓缩蛋白的NSI可达到73.38%，起泡稳定性为91.25%。
气力式油菜精量排种器气流场仿真分析（Simulation Analysis on Air Current Field of Pneumatic Precision Metering Device for Rapeseed）
油菜籽 排种器 气力式
2009/8/11
排种器排种性能直接影响播种机工作质量，为确定气力式油菜精量排种器的结构参数、气流场的运动状况，以ANSYS/CFX为工具，按照正交试验的方法，分别对正压区、负压区气流场进行了仿真研究，并对仿真结果进行了试验验证。研究表明：排种盘型孔数量是影响气流场和排种质量的重要因素；排种盘型孔数量为25时，负压区型孔压强为-754Pa，排种器合格指数达94.2%。
Modification of Beef Tallow Stearin by Chemical and Enzymatic Interesterification with Rapeseed Oil
Interesterification lipases Lipozyme IM Novozym 435 rapeseed oil sodium metoxide tallow stearin
2008/11/13
Beef tallow stearin was blended at various proportions with rapeseed oil and the blends were interesterified using sodium methoxide or immobilized lipases from Rhisomucor miehei (Lipozyme IM) and Cand...
Evaluation of thermooxidation stability of biodegradable recycled rapeseed-based oil NAPRO-HO 2003
biodegradable oils hydraulic circuit gearboxes recycled oil
2014/2/27
The paper deals with the problems of introducing biodegradable oils in relation to the environmental protection. In the course of the research, the parameters were tested and improved of a number of r...
Static and kinetic friction of rapeseed
rapeseed static friction kinetic friction galvanized steel stainless steel concrete B 30
2014/2/27
he present paper examines the static and kinetic coefficient of friction of rapeseed. The project utilized two methods of determination of coefficient of friction of rapeseed: according Eurocode 1 (ki...
Separation of low molecular weight rapeseed proteins by RP-HPLC-DAD – a short report
HPLC rapeseed low molecular weight proteins phenolics phenolic acids
2014/3/17
Low molecular weight proteins were extracted and isolated from rapeseed and analysed using the HPLC-DAD method. The separation of proteins and phenolic compounds was done on the reversed phase C18 col...
Performance and exhaust emissions of direct-injection diesel engine operating on rapeseed oil and its blends with diesel fuel
Diesel engine rapeseed oil fuel blends performance efficiency emissions smoke opacity
2010/11/2
The purpose of this research is to examine the effect of rapeseed oil (RO) inclusion into Diesel fuel (DF) on engine performance parameters. During engine operation at 1 400, 1 800 and 2 200 min-1 the...