搜索结果: 1-15 共查到“工学 Moisture content”相关记录33条 . 查询时间(0.177 秒)
Effect of moisture content on some physical properties of Canarium schweinfurthii Engl. fruits
sphericity area density porosity variety
2016/12/9
The effect of moisture content on some physical properties of three varieties of Canarium schweinfurthii Engl. fruits (small, large and long) was studied at 40.91%, 34.92%, 23.44%, 18.5% and 11.03% mo...
MAPPING SPATIAL MOISTURE CONTENT OF UNSATURATED AGRICULTURAL SOILS WITH GROUND-PENETRATING RADAR
Ground-penetrating radar moisture content agriculture soil spatial mapping active remote sensing
2016/12/1
Soil subsurface moisture content, especially in the root zone, is important for evaluation the influence of soil moisture to agricultural crops. Conservative monitoring by point-measurement methods is...
Effect of moisture content on some engineering properties of mahogany (Khaya senegalensis) seed and kernel
Khaya senegalensis physical properties frictional properties thermal properties specific heat Nigeria
2014/9/22
Some engineering properties of mahogany seed and kernel were investigated and expressed as a function of moisture content. In the moisture ranges of 7.1–32% and 5.3–22% (d.b.), respectively, the seed ...
Analysis of Moisture Content (Oven Volatiles) of Smokeless Tobacco Products 2010 Collaborative and Proficiency Studies
Analysis of Moisture Content Smokeless Tobacco Products
2014/6/3
In 2010, the CORESTA Smokeless Tobacco Sub-Group conducted a collaborative study that
included the four CORESTA Reference Products (CRPs) and five commercial smokeless
tobacco products. This st...
Effect of moisture content on thermodynamic characteristics of grape: mathematical and artificial neural network modelling
sorption thermodynamic drying, neural network grape
2014/2/25
Artificial neural networks (ANNs) and four empirical mathematical models, namely Henderson, GAB, Halsey, and Oswin were used for the estimation of equilibrium moisture content (EMC) of the dried grape...
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....
面向车载式测量的土壤含水量与电导率复合传感器设计（On-the-go Measurement Oriented Combined Sensor Design for Soil Moisture Content and Electrical Conductivity）
复合传感器 土壤含水量 土壤电导率
2010/12/28
基于介电方法设计了符合车载测量要求的四环电极结构土壤含水量与电导率复合传感器。分别在NaCl电导率溶液、含水土样和混合土样中进行标定试验分析，结果证实了复合传感器的可行性。通过分析混合土样中含水量和电导率与传感器输出信号之间的相关性，分别建立土壤含水量与电导率的统计预测模型。
土壤墒情信息采集与远程监测系统（Remote Collecting and Monitoring System of Soil Moisture Content Information）
土壤墒情 远程监测 GIS GPS
2010/12/28
为提高传输距离和进行不间断连续监测,开发了土壤墒情信息采集与远程监测系统。详细讨论了系统的结构和原理,给出了系统的软硬件设计方案。系统利用太阳能进行充电，通过GSM网络进行土壤墒情数据无线传递，利用GPS系统进行采样点的卫星定位。通过GIS软件，系统能实时监测大面积区域内的土壤墒情状态并做出土壤墒情空间分布图。应用结果表明,该系统结构合理,可以为防旱、抗旱提供可靠的依据。
Physical properties of shelled and kernel walnuts as affected by the moisture content
walnut (Juglans regia L.) physical properties moisture content
2014/2/27
The variations in physical properties such as the size dimensions, unit mass, sphericity, projected area, bulk density, true density, volume, coefficient of friction on various surfaces, and terminal ...
An Infra-Red Heating Based Fast Method of Moisture Content Measurement and Its Application to Measure Blend Proportion of Polyester-Viscose Woven Fabrics
Infra-Red Heating Moisture Content Measurement Application Measure Blend Proportion
2010/9/20
Moisture content values of plain woven fabrics of polyester-viscose blended yarns were measured using standard conditioning procedures as well as a new method of preconditioning of samples using infra...
APPLICATION OF MAGNETIC RESONANCE IMAGING FOR RESEARCH OF ANATOMY AND MOISTURE CONTENT OF WOOD
MR microscopy beech Fagus sylvatica living wood wood anatomy moisture content
2009/11/26
Feasibility of nuclear magnetic resonance (NMR) was tested for research of anatomy and moisture content of wood. A three m high living beech tree (Fagus sylvatica L.) was imaged by magnetic resonance ...
Equilibrium Moisture Content of Japanese Cedar (Cryptomeria japonica) Green Wood for Columns in a High-Temperature Water Vapor Environment
real time measurement moisture content high temperature high pressure material for columns
2009/11/23
Changes in the moisture content of Japanese cedar (Cryptomeria japonica D. Don) green wood for columns with the dimensions of 110×110×1000 mm during drying in environments of over 100°C and 1 atm were...
基于DSP的谷物含水率在线测量方法（Universal Online Measuring Method of Grain Moisture Content Based on DSP）
数字信号处理 谷物含水率 在线测量
2009/11/3
提出一种基于DSP的谷物含水率测量方法。谷物通过自身重力导入到测试腔内，由MCU和DSP为核心器件构成的测试系统对谷物含水率进行测量、存储，并通过LCD显示。经过测量的谷物，通过螺旋输送器排出，进行下一步测量。系统通过DS18S20温度传感器对谷物温度进行测量，并对温度予以补偿。该方法可使谷物含水率测量误差低于1%，优于常规测量方法。
小麦拔节期农学参数和土壤含水量空间统计（Spatial Statistic Properties of Agronomic Parameters and Soil Moisture Content in Wheat Jointing Stage）
冬小麦 农学参数 土壤
2009/11/3
选取山东省陵县的小麦试验示范基地作为样区，采用GPS定位调查，获取田间21个样点的土壤和小麦植株样品，运用TDR300测定样点土壤含水量，利用SPAD-502叶绿素仪测定采样点拔节期小麦植株叶片的叶绿素含量，获取小麦干物质产量信息。基于地统计学原理，结合空间分析技术，探讨了小麦叶绿素含量、干物质产量等农学参数信息和土壤含水量的空间变异特征。研究结果表明，土壤水分和小麦叶绿素含量的空间变异呈强的空间...
Performance of an Accelerated Method for the Determination of Equilibrium Moisture Content
equilibrium moisture content accelerated performance
2009/6/18
The performance of a method that could accelerate the sorption process of biological materials was evaluated with respect to rapidness (expedition of sorption), comparability of equilibrium moisture c...