نتایج جستجو برای: conductivity

تعداد نتایج: 50623  

Journal: :Biophysical journal 2003
Mojca Pavlin Damijan Miklavcic

During the electroporation cell membrane undergoes structural changes, which increase the membrane conductivity and consequently lead to a change in effective conductivity of a cell suspension. To correlate microscopic membrane changes to macroscopic changes in conductivity of a suspension, we analyzed the effective conductivity theoretically, using two different approaches: numerically, using ...

Journal: :journal of agricultural science and technology 2012
a. sadeghi

application of feed pellets in animal and aquatic farming industries has grown because of both the physical and the nutritional benefits it provides. development of feed pellets manufacturing industry is also considerable. steam conditioning process, which plays an important role in pelleting production, includes heating feed particles, adding moisture, and mixing the mash. pellets cooling and ...

Journal: :Plant physiology 1992
H S Neufeld D A Grantz F C Meinzer G Goldstein G M Crisosto C Crisosto

Genotypic variability in vulnerability of leaf xylem to water-stress-induced cavitation was determined in four sugarcane (Saccharum sp.) clones using detached leaf segments in a hydraulic conductivity apparatus. Vulnerability curves were constructed by plotting the percentage of maximum conductivity versus leaf water potential (psi(I)) and fitting curves using a Weibull function. The psi(I) at ...

2009
Chunhui Shen Zheng Wang Mu Pan

Conductive composite bipolar plate is made of composite materials filled with high content conductive filler. The conductivity of this bipolar plate is influenced by many factors. It is difficult to use a formula to accurately calculate its conductivity, and current models have certain defaults. In this paper, in view of the contact resistance, a model is established and the conductivity formul...

2015
Asir Intisar Khan Ishtiaque Ahmed Navid Maliha Noshin H. M. Ahsan Uddin Fahim Ferdous Hossain Frank Schwierz

The thermal conductivity of graphene nanoribbons (GNRs) has been investigatedusing equilibrium molecular dynamics (EMD) simulation based on Green-Kubo (GK)method to compare two interatomic potentials namely optimized Tersoff and 2nd generationReactive Empirical Bond Order (REBO). Our comparative study includes the estimation ofthermal conductivity as a function of temperature, l...

2013
Fivos Drymiotis Tristan W. Day David R. Brown Nicholas A. Heinz Jeffrey Snyder

K. Sedighi M. Ebrahimi M. Farhadi, S. Akbarzadeh

In this paper, the measurement of the viscosity of ZnO in ethylene glycol, propylene glycol, mixture of ethylene glycol and water (60:40 by weight), and a mixture of propylene glycol and water (60:40 by weight) and the thermal conductivity in ethylene glycol and propylene glycol as base fluids in the range of temperature from 25 ºC to 60 ºC are investigated. The results indicate that as the tem...

The lattice Boltzmann method (LBM) was used to analyze two-dimensional (2D) non-Fourier heat conduction with temperature-dependent thermal conductivity. To this end, the evolution of wave-like temperature distributions in a 2D plate was obtained. The temperature distributions along certain parts of the plate, which was subjected to heat generation and constant thermal conductivity condit...

Journal: :caspian journal of environmental sciences 2005
s. chandra h.c. joshi h. pathak

irrigation with distillery effluent, besides influencing crop yield, may have considerable impact on physical properties of soil because of its high salt and organic carbon contents. this experimental study was conducted to evaluate the effect of distillery effluent on hydraulic conductivity of a sandy loam alluvial soil and compare the effect of inorganic salts of potassium (k) with that of di...

Journal: :روش های عددی در مهندسی (استقلال) 0
احمد نصیر احمدی a. nasirahmadi لیلا استحقاری و علی اکبر سودی l. estehghari and a. a. soudi

the compounds, lanthanium chromite, lanthanium magnetite and lanthanium ferric oxide were prepared through sol-gel methods in powdered form, then calcinated, peletized, and sintered at various temperatures. electrical conductivity of these compounds was measured at various temperatures. the effectiveness of strontium as a dopant on electrical conductivity was also investigated. electrical condu...

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