搜索结果: 1-15 共查到“农学总论 method”相关记录42条 . 查询时间(0.265 秒)
Erosion Potential Method (Gavrilović method) sensitivity analysis
erosion assessment erosion intensity input parameters method sensitivity sediment production
2017/4/6
In recent decades, various methods for erosion intensity and sediment production assessment have been developed. The necessity for better model performance has led to the more frequent application of ...
A SOUND APPROACH FOR RESOLVING THE FOREST PROPERTY PROBLEMS WITH DIGITAL PHOTOGRAMETRIC METHOD
Forestry Photogrammetry Image Digita Method
2015/7/29
The Turkey’s general cadastre works have not been completed as yet. Even some of the areas where cadastre has been finalised,
forest properties are still under social pressure and as such these area...
An evaluation of green areas from the point of user satisfaction in Ankara, Turkey: Gap analyses method
Ankara green areas gap analyses satisfaction recreation
2011/1/11
Green spaces contribute to the urban environment by producing positive ecological impacts and providing spaces for recreation and contact with nature. It is proven in various researches that urban gre...
An RFID based indoor tracking method for navigating visually impaired people
Tracking location estimation RF signals Bayes RFID classification
2010/3/17
This paper tackles the RFID based tracking problem in an obscured indoor environment. The proposed solution is an integral part of a navigation aid for guiding visually impaired people in a store. It ...
根系吸水模型参数的混合遗传算法估算方法（Inverse Method Estimating Root Water Uptake Model Parameters Using Hybrid Genetic Algorithms）
根系吸水模型 参数优化 混合遗传算法
2009/9/11
构建了遗传算法与Levenberg-Marquardt算法相结合的混合遗传算法，用于求解根系吸水模型参数。分别进行数值试验和棉花根系吸水试验对混合遗传算法求解精度进行验证。数值试验表明，采用混合遗传算法优化求解根系吸水模型参数的优化值具有较高的精度，含水率资料的时间步长和空间步长对根系吸水模型参数的优化精度有较大影响，在实际中时间步长可取值5～10d，空间步长取值5～10cm。对室内棉花根系吸水进...
An Improved Method for Light Microscopy Using Extraction Techniques of Spurr's Resin Sections
Oryza sativa Resin removal Spurr's resin
2009/7/31
An Improved Method for Light Microscopy Using Extraction Techniques of Spurr's Resin Sections.
A Convenient Method for Determining the Effect of Abscisic Acid on the Stomatal Aperture of Rice (Oryza Sativa L.) by Feeding Solution to the Leaf Tip
Abscisic acid Oryza sativa L Stomatal conductance Wilting
2009/7/31
We established a convenient method for determining the effect of abscisic acid (ABA) solution on the stomatal aperture in wilting-sensitive plants such as rice (Oryza staiva L.). Water or ABA solutio...
Method of Investigation in Rhizobacterial Flora of Crops and Application Case by Using Biolog's Identification System
Biolog's identification system Diversity index Rhizobacteria Rhizobacterial flora
2009/7/15
Fifty strains of rhizobacteria were isolated from roots of crops in rotation and monocropping plots of soybeans and sweet potatos one month before harvest, and they were identified by using Biolog's ...
In the present study, we investigated the spectrophotometrical method to quantitate nitrite ion produced from the reaction of hydroxylammonium (NH2OH) with O2−, as a method of measurins the O2&#...
基于PCA_SVR的油菜氮素光谱特征定量分析模型（Rape Nitrogen Content Spectral Character Models Based on PCA_SVR Method）
油菜 氮素 光谱分析
2009/5/22
研究了采用光谱分析技术对油菜植株全氮进行定量分析的方法。采用逐步回归法对氮素的光谱特征波长进行选择，为克服光谱变量间多重共线性的影响，对变量进行了主成分分析（PCA），为提高模型的拟合优度，应用支持向量机回归(SVR)建立油菜氮素的定量分析模型。对不同氮素水平的油菜冠层光谱数据进行分析，结果表明，406、460、556、634、662、675nm的光谱反射率与油菜含氮量呈极显著相关。植株全氮SVR...
基于紫外指纹图谱技术的食醋品种检测方法（Method of Vinegar Detection Based on Ultraviolet Fingerprint Technology）
食醋 检测 紫外光谱
2009/5/22
以不同食醋为研究对象，采用旋转蒸发、紫外光谱扫描等手段研究了波长范围、蒸发液稀释比例、蒸发温度和参比液质量浓度等对食醋紫外吸收曲线的影响，确定了食醋紫外指纹图谱检测方法的试验条件：扫描波长范围245～330nm，蒸发液稀释比例1∶6，蒸发温度45℃，冰醋酸参比液质量浓度45g/L。以曲线间的相似度为指标验证了方法的重现性、稳定性和差异性，结果表明：各个食醋样品3次重复测定的指纹图谱间相似度均大于0...
Comparison of the Centroid Method and Four Standard Formulas for Estimating Log Volumes
Centroid Method Four Standard Formulas Estimating Log Volumes
2009/1/15
Centroid Samling was tested on 21 logs of Ash ( Fraxinus angustifolia subsp. oxycarpa), 38 logs of Spruce ( Picea orien-talis (L.) Link.), and 33 logs of Beech ( Fagus orientalis Lipsky.) all of which...
Comparison of Different Chemical Pulps from Wheat Straw and Bleaching with Xylanase Pre-Treated ECF Method
Wheat straw biopulping enzyme prebleaching organosolv pulping FT-IR
2009/1/7
Different pulping processes, kraft-anthraquinone (AQ), bio-kraft, soda-AQ, ALCELL, and FORMACELL were studied for wheat straw. Fungal pre-treatment with Ceriporiopsis subvermispora, white rot fungi, w...
Acoustic emission as a method for the detection of fractures in the plant tissue caused by the external forces
acoustic emission stress strain plant tissue
2008/11/26
In order to detect fractures in the plant tissue resulting from deformations, the method of acoustic emission has been applied. Simultaneous measurements of the mechanical parameters and the acoustic ...
A method for estimation of enzymatic browning and its suppression in apple slices
apple slices reflectance browning oxalate sulphite
2008/11/26
A described method is based on diffuse light reflectance in the spectral region 400-720 nm for the examination of enzymatic browning of apple slices. In this method apples are sliced as directly dippe...