搜索结果: 1-15 共查到“工学 residue”相关记录34条 . 查询时间(0.187 秒)
As the world struggles to improve the efficiency of cars and other vehicles in order to curb greenhouse gas emissions and improve the range of electric vehicles, the search is on for ever-lighter mate...
Residue Placement and Rate, Crop Species, and Nitrogen Fertilization Effects on Soil Greenhouse Gas Emissions
Greenhouse Gases Residue Management Nitrogen Fertilization Crop Species Spatial Variability
2013/3/11
High variability due to soil heterogeneity and climatic conditions challenge measurement of greenhouse gas (GHG) emissions as influenced by management practices in the field. To reduce this variabilit...
Review Article: Remote Sensing, Surface Residue Cover and Tillage Practice
Remote Sensing Residue Cover
2013/3/11
A growing world population and possible liquid fuel energy shortages are likely to result in worldwide agricultural intensification, and the possible expansion of non-sustainable practices. The adopti...
Harvest Residue Study of Fungicide Tebuconazole Ec Formulation in Groundnut and Paddy
Control Fungicides Pyricularia Oryzae Rice Blast Oryza Sativa L
2013/3/12
A field trial was conducted under West Bengal condition during July 2009 to October 2009 to evaluate the harvest residue of Tebuconazole (25.9% EC) in paddy at two application rates (750 and 1500 mL h...
醋糟有机基质含水率的可见/近红外光谱检测（Detection of Moisture Content in Vinegar Residue Substrate Using Visible-near-infrared Spectroscopy）
醋糟 有机基质 含水率
2010/12/29
以醋糟有机基质为研究对象，采用便携式可见/近红外光谱仪采集了不同含水率基质样品（69个）的漫反射光谱，通过选择不同的光谱预处理方法并确定其主成分数，建立了基于偏最小二乘法（PLS）的醋糟基质含水率定量分析模型。结果表明，以滑动平均滤波（MAF）和一阶微分（FD）相结合作为原始光谱的预处理方法所建立的模型（主成分数为5）对基质含水率的检测效果较好，其校正模型和预测模型决定系数分别为0.9930和0....
微量有机磷农药残留近红外光谱快速检测方法（Determination of Organophosphorus Pesticide Residue by Using Near-infrared Spectroscopy）
有机磷农药 近红外光谱 偏最小二乘回归法
2010/12/28
以滤纸作为农药载体，在波数4000～10000cm-1范围内获取其近红外光谱曲线。分别采取偏最小二乘回归法和最佳波段差值回归法建立农药质量比的预测模型。偏最小二乘回归法在经过多元散射校正和变量标准化预处理后得到的预测结果较好，预测相关系数为0.954，通过最佳波段差值回归法得到的预测相关系数为0.904。两种建模方法都得到了较好的预测结果。
Bioefficacy and Residue Studies of Fantac (Biostimulant) in Rice Crop under Sub-Tropical Conditions
Fantac Biostmulant Harvest Residues HPLC
2013/3/13
Field investigations were conducted for three seasons from July 2006-2007 to test the efficacy of Fantac (N-ATCA) in transplanted rice and also determine its harvest time residues in paddy grain, stra...
OPTIMIZATION OF 6-PENTYL-ALPHA-PYRONE PRODUCTION BY SOLID STATE FERMENTATION USING SUGARCANE BAGASSE AS RESIDUE
OPTIMIZATION 6-PENTYL-ALPHA-PYRONE PRODUCTION BY
2010/10/25
Solid state fermentation (SSF) has been used as a model for the study of metabolism and physiology of microorganisms. The aim of the present study was to enhance 6-PP production by Trichoderma harzian...
Complex Fertilizer Production from the Residue in Producing Furfural Using Straw: Study on the
straw residue additive
2009/11/16
The complex additives which contain (ω) 4%~6% phosphoric acid, 4%~6% calcium triple superphosphate, 80%~90% calcium phosphate, 2%~3% calcium carbonate, 2%~4% sodium hydrosuphite, 2%~4% ferric sulfate ...
Decoding the Ternary (23, 11, 9) Quadratic Residue Code
Decoding Ternary (23, 11, 9) Quadratic Residue Code
2009/9/4
The algebraic decoding of binary quadratic residue codes can be performed using the Peterson or the Berlekamp-Massey algorithm once certain unknown syndromes are determined or eliminated. The techniqu...
基于人工神经网络的田间秸秆覆盖率检测系统（Measuring System for Residue Cover Rate in Field Based on BP Neural Network）
保护性耕作 秸秆覆盖率 BP神经网络
2009/8/11
以VC++为工具，田间实拍图像为研究对象，在分析田间秸秆和土壤纹理特征差别的基础上，设计了BP神经网络秸秆覆盖率检测系统。该系统采用了神经网络与纹理特征相结合的方法提取秸秆，并以纹理特征熵值为标准建立了网络输入层学习样本选取准则。人工模拟和田间试验表明，设计的BP神经网络秸秆覆盖率检测系统对田间秸秆的识别率达90%以上，秸秆覆盖率计算误差可控制在5%以内；与传统的拉绳法相比，检测效率提高50～12...
苹果汁中溴氰菊酯残留的大孔树脂吸附分离（Separation of Deltamethrin Residue in Apple Juice with Macroporous Adsorption Resin）
溴氰菊酯残留 苹果汁 大孔吸附树脂
2009/8/11
为去除苹果汁中残留的溴氰菊酯,利用大孔吸附树脂对苹果汁中溴氰菊酯的吸附性能及参数进行了研究。通过树脂吸附溴氰菊酯的静态吸附试验, 对大孔吸附树脂进行了筛选,同时，在动态吸附试验的基础上，对最佳吸附动态条件进行了优化，结果表明：LS—803型树脂对溴氰菊酯的吸附能力最强, 其静态吸附时间为100min；通过正交试验确定了LS—803型树脂较佳的动态吸附条件为: 温度20℃、苹果汁质量浓度110g/L...
Measurement of Vacuum Residue and Asphaltene Fluid Properties at Process Conditions
Fluid property Surface tension Viscosity Contact angle
2009/7/24
The fluid properties of interfacial tension and viscosity, and the fluid-solid interactions embodied in the contact angle, are important in a wide range of phenomena that affect the processing of the...
Effects of Asphaltene Content in Atmospheric Residue and Mean Pore Size of Catalyst on Initial Deactivation of Hydrodesulfurization Catalyst
Hydrotreating Atmospheric residue Catalyst deactivation rate
2009/7/24
(HDS) of atmospheric residue (AR) over Ni-Co-Mo catalysts supported on γ-alumina was carried out to examine the effect of alumina pore size on HDS activity, hydrodemetallization (HDM) activity and ini...
Promotion of Catalytic Activities and Suppression of Deactivation by Water in the Hydrotreatment of Atmospheric Residue
Atmospheric residue Hydrotreating Water addition Hydrodesulfurization
2009/7/24
Water was added to extend the continuous run of the atmospheric residue hydrotreatment process in bench plant and autoclave tests for improvement of catalyst life. Addition of water increased the ca...