Results 21 to 30 of about 7,555,861 (292)
Calculation of the effective diffusion coefficient during the drying of clay samples [PDF]
Journal of the Serbian Chemical Society, 2012 The aim of this study was to calculate the effective diffusion coefficient based on experimentally recorded drying curves for two masonry clays obtained from different localities.
Vasić Miloš +2 more
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Polymer Testing, 2021 A fast manometric method has been designed for determining the oxygen transfer rate through cork stoppers. Thanks to this technique, it is possible to measure the effective diffusion coefficient of oxygen through a thin cork wafer in a few days, whereas ...
Julie Chanut +6 more
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Effective diffusion coefficients in reaction-diffusion systems with anomalous transport [PDF]
Physical Review E, 2019 We show that the Turing patterns in reaction systems with subdiffusion can be replicated in an effective system with Markovian cross-diffusion. The effective system has the same Turing instability as the original system, and the same patterns. If particles are short-lived, the transient dynamics are captured as well.
Joseph W. Baron, Tobias Galla
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Scale Dependency of the Effective Matrix Diffusion Coefficient [PDF]
Vadose Zone Journal, 2004 It has been recognized that matrix diffusion is an important process for retarding solute transport in fractured rock. Based on analyses of tracer transport data from a number of field tests, we demonstrate for the first time that the effective matrix‐diffusion coefficient may be scale dependent and generally increases with test scale.
Liu, H.H., Bodvarsson, G.S., Zhang, G.
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Crystals, 2021 This study investigated the effective chloride diffusion coefficient of cement mortar with different water-to-cement ratio (w/c) under electrical accelerated migration measurement.
Jianlan Chen +4 more
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Effects of diffusive property heterogeneity on effective matrix diffusion coefficient for fractured rock [PDF]
Water Resources Research, 2006 Heterogeneities of diffusion properties are likely to influence the effective matrix diffusion coefficient determined from tracer breakthrough curves. The objectives of this study are (1) to examine if it is appropriate to use a single, effective matrix diffusion coefficient to predict breakthrough curves in a fractured formation, (2) to examine if a ...
Zhang, Yingqi +3 more
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Effect of Modification on the Fluid Diffusion Coefficient in Silica Nanochannels [PDF]
Molecules, 2021 The diffusion behavior of fluid water in nanochannels with hydroxylation of silica gel and silanization of different modified chain lengths was simulated by the equilibrium molecular dynamics method. The diffusion coefficient of fluid water was calculated by the Einstein method and the Green–Kubo method, so as to analyze the change rule between the ...
Chen, Gengbiao, Liu, Zhiwen
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Modeling kinetics of convective drying of Curcuma longa L. [PDF]
Revista Brasileira de Engenharia Agrícola e Ambiental, 2021 This study aimed to determine drying curves of land saffron (Curcuma longa L.) rhizomes at different temperatures and ventilation conditions to adjust non-linear regression models, and to calculate effective diffusion coefficients and activation energies.
Maria S. Lima +5 more
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Effect of solid thermal conductivity and particle-particle contact on effective thermodiffusion coefficient in porous media [PDF]
, 2011 Transient mass transfer associated to a thermal gradient through a saturated porous medium is studied experimentally and theoretically to determine the effect of solid thermal conductivity and particle-particle contact on thermodiffusion processes.
Davarzani, Hossein +5 more
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Characterization of Effective Diffusion within Viscoelastic Fluids with Elastic Instabilities
Fluids, 2022 We considered effective diffusion, characterized by magnitudes of effective diffusion coefficients, in order to quantify mass transport due to the onset and development of elastic instabilities.
Valerie Hietsch +2 more
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