Results 11 to 20 of about 145,583 (300)
The Impact of Wettability on Effective Properties of Cathode Catalyst Layer in a Proton Exchange Membrane Fuel Cell [PDF]
Hydrogen, Fuel Cell & Energy Storage, 2017 The produced liquid water in cathode catalyst layer (CCL) has significant effect on the operation of proton exchange membrane fuel cell (PEMFC). To investigate this effect, the transport of oxygen in CCL in the presence of immiscible liquid water is ...
Hossein Fathi +2 more
doaj +1 more source
Quantitative BOLD: The effect of diffusion [PDF]
Journal of Magnetic Resonance Imaging, 2010 AbstractPurpose:To make the quantitative blood oxygenation level‐dependent (qBOLD) method more suitable for clinical application by accounting for proton diffusion and reducing acquisition times.Materials and Methods:Monte Carlo methods are used to simulate the signal from diffusing protons in the presence of a blood vessel network.
John D, Dickson +6 more
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Diffusion effects in a superconductive model
Communications on Pure and Applied Analysis, 2014 A superconductive model characterized by a third order parabolic operator L" is analysed. When the viscous terms, represented by higher - order deriva- tives, tend to zero, a hyperbolic operator L0 appears. Furthermore, if P" is the Dirichlet initial boundary - value problem for L", when L" turns into L0; P" turns into a problem P0 with the same ...
DE ANGELIS, MONICA, FIORE, GAETANO
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Brownian yet non-Gaussian diffusion: from superstatistics to subordination of diffusing diffusivities [PDF]
, 2017 A growing number of biological, soft, and active matter systems are observed to exhibit normal diffusive dynamics with a linear growth of the mean squared displacement, yet with a non-Gaussian distribution of increments.
Chechkin, A. V. +3 more
core +3 more sources
Effective diffusivity of passive scalars in rotating turbulence [PDF]
, 2013 We use direct numerical simulations to compute turbulent transport coefficients for passive scalars in turbulent rotating flows. Effective diffusion coefficients in the directions parallel and perpendicular to the rotations axis are obtained by studying ...
Imazio, P. Rodriguez, Mininni, P. D.
core +2 more sources
BioResources, 2016 This article presents a methodology based on genetic algorithms (GA) optimization with a three-dimensional numerical solution to the diffusion model obtained by using the finite volume method (FVM) for determining the effective moisture diffusivity in ...
Shaojiang Zheng +3 more
doaj +1 more source
Effect of resonances on diffusive scattering [PDF]
Physical Review B, 1998 12 pages, 1 Figure, to be published in Physical Review ...
Elattari, B. +2 more
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Multiple-scale analysis and renormalization for pre-asymptotic scalar transport [PDF]
, 2004 Pre-asymptotic transport of a scalar quantity passively advected by a velocity field formed by a large-scale component superimposed to a small-scale fluctuation is investigated both analytically and by means of numerical simulations.
Mazzino, A., Musacchio, S., Vulpiani, A.
core +2 more sources
Drying of lucuma (Pouteria obovata) using the technique of Refracting WindowTM
Scientia Agropecuaria, 2014 Lucuma is a fruit that is experiencing a growing trend in commercial ground into flour for use in the food industry. This study aimed to obtain lucuma flour using the method of refractive window drying and evaluate the effect of the thickness of lucuma ...
Diego Gamboa +4 more
doaj +1 more source
Mass transfer in a membrane aerated biofilm [PDF]
, 2012 We present experimental results of mass transfer of a non reactive tracer gas (neon)measured in aerobic heterotrophic biofilm developed from activated sludge.
Aimar, Pierre +4 more
core +4 more sources