搜索结果: 1-15 共查到“工学 Conductivity”相关记录57条 . 查询时间(0.055 秒)
Limitations of Diels-Alder Dynamic Covalent Networks as Thermal Conductivity Switches
thermal conductivity thermal switching dynamic covalent networks RAFT polymerization Diels-Alder cross-linking
2023/12/1
Creating polymers that exhibit a switchable thermal conductivity requires a fundamental understanding of how polymer structure and inter- and intramolecular interactions influence thermal transport. T...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Deep neural network approximation to inverse conductivity problems for elliptic equations
椭圆方程 反电导率 深度神经网络
2023/4/14
The focus of this talk is on the numerical methods used to identify parameters in partial differential equations. Typically, an optimization approach is used to solve this class of inverse problems, w...
中国地质大学科学技术发展院段姗姗（博士研究生）,靳洪允等材化学院 Nano Energy , Available online 14 June 2018. Non-equilibrium microstructure of Li1.4Al0.4Ti1.6(PO4)3 superionic conductor by spark plasma sintering for enhanced ionic conductivity（图）
固态；电解质；全固态电池；核心组件
2021/10/21
近日，能源领域的重要国际期刊《Nano Energy》在线刊发了中国地质大学材化学院侯书恩教授团队的研究成果——Non-equilibrium Microstructure of Li1.4Al0.4Ti1.6(PO4)3 Superionic Conductor by Spark Plasma Sintering for Enhanced Ionic Conductivity。论文第一作者为材化...
Evaluations of the effects of soil properties and electrical conductivity on the water content reflectometer calibration for landfill cover soils
soil electrical conductivity soil index properties time domain reflectometry volumetric water content WCR calibration
2016/8/2
This study presents soil-moisture calibrations using low-frequency (15–40 MHz) time domain reflectometry (TDR) probe, referred to as water content reflectometer (WCR), for measuring the volumetric wat...
Ionic conductivity thresholdin sulfonatedpoly (phenylene oxide) matrices:a combination of three-phase model and percolation theory
Poly (phenylene oxide) polymer Ionic transfer Ion exchange membrane Percolation threshold Three-phase model Conductivity
2016/3/25
In this paper, both the percolation theory andthe three-phase model (TPM) are employedto study the ionic transport behavior in sulfonated poly(phenylene oxide) (SPPO) series membranes. The conductive ...
Measurement of the Hydraulic Conductivity of Gravels Using a Laboratory Permeameter and Silty Sands Using Field Testing with Observation Wells
grain size gravel hydraulic conductivity observation wells permeameter tortuosity
2014/11/4
A new laboratory permeameter was developed for measuring the hydraulic conductivity of gravels ranging from 0.1 to 2 m/s. The release of pneumatic pressure applied to the test specimen induces an unde...
Measurement of the Hydraulic Conductivity of Gravels Using a Laboratory Permeameter and Silty Sands Using Field Testing with Observation Wells
observation wells permeameter tortuosity
2014/10/31
A new laboratory permeameter was developed for measuring the hydraulic conductivity of gravels ranging from 0.1 to 2 m/s. The release of pneumatic pressure applied to the test specimen induces an unde...
Dispersion stability and thermal conductivity of propylene glycol-based nanofluids
Nanofluids Propylene glycol Alumina nanoparticles Titania nanoparticles Thermal conductivity Dispersion stability
2012/5/29
The dispersion stability and thermal conductivity of propylene glycol based nanofluids containing Al2O3 and TiO2 nanoparticles were studied in the temperature range of 20 to 80 {\deg}C. Nanofluids wit...
Computational Analysis of Factors Influencing Enhancement of Thermal Conductivity of Nanofluids
thermal conductivity nanofluids aggregation fractal dimensions Titania Alumina
2012/5/29
Numerical investigations are conducted to study the effect of factors such as particle clustering and interfacial layer thickness on thermal conductivity of nanofluids. Based on this, parameters inclu...
Thermal conductivity of mass-graded graphene flakes
Thermal conductivity mass-graded graphene flakes nonequilibrium molecular dynamics simulations
2011/8/16
Abstract: In this letter we investigate thermal conductions in mass-graded graphene flakes by nonequilibrium molecular dynamics simulations. It shows mass-graded graphene flakes reveal no thermal rect...
基于相位检测原理的TDR土壤电导率测量研究（Research of Soil Conductivity Measuring Technique with TDR Based on Phase Detecting Principle）
土壤 电导率 盐分 时域反射
2010/12/29
介绍了基于相位检测的时域反射（P-TDR）技术的工作原理。对8种不同盐分含量的砂壤土土样在5个含水量水平下进行实验，结果显示，信号的反射系数随电导率增加单调减小。分别采用线性和二次多项式对测量结果进行建模实验，并选择二次多项式为P-TDR电导率测量模型，模型的决定系数达0.812以上。土壤含水量对电导率测量有较大影响，在分析了土壤含水量与多项式系数关系的基础上，最终建立了以土壤含水量和反射系数为变...
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。
Ionic conductivity in oxide heterostructures: the role of interfaces
Ionic conductivity oxide heterostructures role of interfaces
2010/11/25
Rapidly growing attention is being directed to the investigation of ionic conductivity in oxide film heterostructures. The main reason for this interest arises from interfacial phenomena in these hete...
Development of novel thermoelectric materials by reduction of lattice thermal conductivity
Development novel thermoelectric materials reduction lattice thermal conductivity
2010/10/12
Thermal conductivity is one of the key parameters in the figure of merit of thermoelectric materials. Over the past decade, most progress in thermoelectric materials has been made by reducing their th...
Joule heating effects on a micropolar fluid past a stretching sheet with variable electric conductivity
joule heating magnetic field micropolar fluid stretching sheet
2010/3/11
The magneto-hydrodynamic (MHD) and joule heating effect on a laminar micropolar fluid boundary layer past a continuous, linearly stretching, non-isothermal sheet (with prescribed wall heat flux) is co...