نتایج جستجو برای: transport processes

تعداد نتایج: 778946  

Journal: :SIAM Journal of Applied Mathematics 2000
George Papanicolaou Guillaume Bal Leonid Ryzhik

We derive a probabilistic representation for solutions of matrix-valued transport equations that account for polarization e ects. Such equations arise in radiative transport for the Stokes parameters that model the propagation of light through turbulent atmospheres. They also arise in radiative transport for seismic wave propagation in the earth's crust. The probabilistic representation involve...

2017
H. M. Gaber Steven Comfort Patrick J. Shea Thomas A. Machacek T. A. Machacek

soils. A natural obstacle to this practice is the accelerated aging of iron and loss of reactivity resulting from O2 Permeable zerovalent iron (Fe0 ) barriers have become an estabin the soil atmosphere. Despite this apparent limitation, lished technology for remediating contaminated ground water. This same technology may be applicable for treating pesticides amenable situations could arise wher...

Journal: Geopersia 2020

Ultramafic rocks of the ophiolitic complexes are prone to alteration and degradation, and therefore, ease of mobility of heavy metals such as nickel (Ni), chromium (Cr), cobalt (Co), lead (Pb), and vanadium (V), resulting in environmental hazards. The ultramafic rocks of the ophiolitic realm of Kurdistan province, west of Iran, show field and compositional evidence for such hazardous conditions...

Journal: :Computers & Chemical Engineering 2005
Stevan Dubljevic Prashant Mhaskar Nael H. El-Farra Panagiotis D. Christofides

This work focuses on the development of computationally efficient predictive control algorithms for nonlinear parabolic and hyperbolic PDEs with state and control constraints arising in the context of transport-reaction processes. We first consider a diffusion-reaction process described by a nonlinear parabolic PDE and address the problem of stabilization of an unstable steady-state subject to ...

1998
BERNDT MÜLLER

Because the running coupling g(T ) of QCD decreases as a function of temperature T , the SU(3) color gauge theory becomes weakly coupled in the high temperature limit. Numerical simulations of the lattice gauge theory with dynamical quarks have shown that the equation of state ǫ(T ) makes a transition from the low-temperature phase, where the effective degrees of freedom are hadrons, to a high ...

2015
A. S. Ogston

Fain, A.M.V., Ogston, A.S., Miserocchi, S., Nittrouer, C., Palinkas, C., Sternberg R. "Seasonal trends in sediment dynamics on the Po River continental shelf." Ocean Sciences, 2002, Honolulu, HI. Palinkas, C., Nittrouer, C., Wheatcroft, R., Langone, L., Miserocchi, S., Ogston, A., Fain, A., " Seasonal Deposition of Sediment Near the Mouth of the Po River". Ocean Sciences, 2002, Honolulu, HI. Bo...

ژورنال: علوم آب و خاک 2013
بهزاد, مجید, معاضد, هادی, موسوی, سید فرهاد, گودرزی, مصطفی,

The transport process of chemical-fertilizers, radioactive materials and other solutes in soils and porous media is important to understand the environmental and economic effects of industrial, agricultural and urban waste disposal methods. In unsaturated porous media, large gradient in aqueous osmotic potential derives significant water vapor fluxes towards regions of high solute concentration...

A.R Yasi M Yasi R Hamzepouri

Flow and sediment transport processes are different and more complex in coarse-bed rivers than in sand-bed rivers. The main goal of the present study is to evaluate different modes of sediment transport using different hydrometric and hydraulic methods, and to address the major uncertainties. Four river reaches were selected as representatives of coarse-bed rivers in the Northwest of Iran. A se...

2016
Ernesto J. Grasso Adolfo E. Sottile Carlos E. Coronel

It is known that caltrin (calcium transport inhibitor) protein binds to sperm cells during ejaculation and inhibits extracellular Ca2+ uptake. Although the sequence and some biological features of mouse caltrin I and bovine caltrin are known, their physicochemical properties and tertiary structure are mainly unknown. We predicted the 3D structures of mouse caltrin I and bovine caltrin by molecu...

ح. محمدپور, , م. زارعیان, ,

 We study the transport of electrons in a graphene NSN structure in which two normal regions are connected by a superconducting strip of thickness d. Within Dirac-Bogoliubov-de Gennes equations we describe the transmission through the contact in terms of different scattering processes consisting of quasiparticle cotunneling, local and crossed Andreev reflections. Compared to a fully normal stru...

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