Results 21 to 30 of about 3,868,967 (292)
Measurement of Gas Diffusion Coefficient in Highly Permeable Porous Media
Vadose Zone Journal, 2019 Gas diffusion is a fundamental transport process in porous media. However, to date, there is no method for experimentally estimating the gas diffusion coefficient of coarse porous media.
Elad Levintal +3 more
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Spin transport in diffusive superconductors [PDF]
Physical Review B, 2004 We employ the Keldysh formalism in the quasiclassical approximation to study transport in a diffusive superconductor. The resulting 4x4 transport equations describe the flow of charge and energy as well as the corresponding flow of spin and spin energy. Spin-flip scattering due to magnetic impurities is included.
Morten, Jan Petter +2 more
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Molecular Diffusion of Toluene through CaCO3-Filled Natural Rubber Composites [PDF]
علوم و تکنولوژی پلیمر, 2012 The transport properties of liquids and gases through polymeric materialsplay a very important role in some areas of industrial applications. In thisstudy, natural rubber (NR)/CaCO3 composites were prepared by melt mixingmethod.
Hedayatollah Sadeghi Ghari +2 more
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Intracellular transport by active diffusion [PDF]
Trends in Cell Biology, 2009 All substances exhibit constant random motion at the microscopic scale. This is a direct consequence of thermal agitation, and leads to diffusion of molecules and small particles in a liquid. In addition to this nondirected motion, living cells also use active transport mechanisms, such as motor activity and polymerization forces that depend on linear ...
Brangwynne, C. P. +3 more
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Chaos, Transport and Diffusion
, 2015 This chapter presents basic elements of chaotic dynamical system theory. The concept of Lyapunov exponent, predictability time and Lagrangian chaos are introduced together with examples. The second part is devoted to the discussion of Lagrangian chaos, in particular in two dimensions, and its relation with Eulerian properties of the flow. The last part
BOFFETTA, GUIDO +2 more
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Drug Diffusion Transport Through Human Skin
International Journal of Applied Mechanics and Engineering, 2018 The stratum corneum (SC) forms the outermost layer of the human skin and is essentially a multilamellar lipid milieu punctuated by protein-filled corneocytes that augment membrane integrity and significantly increase membrane tortuosity.
A. Walicka, B. Iwanowska-Chomiak
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Diffusion and transport of extracellular vesicles [PDF]
Nature Nanotechnology, 2020 Cell-derived extracellular vesicles are important intercellular communicators involved in many biological processes and diseases, including cancer and cardiovascular diseases, but, thus far, how they navigate within complex extracellular matrices has been poorly understood.
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Transport and diffusion in the embedding map [PDF]
Physical Review E, 2009 We study the transport properties of passive inertial particles in a $2-d$ incompressible flows. Here the particle dynamics is represented by the $4-d$ dissipative embedding map of $2-d$ area-preserving standard map which models the incompressible flow.
Thyagu, N. Nirmal, Gupte, Neelima
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Anomalous transport and diffusion in percolation systems [PDF]
, 2007 Many disordered systems can be modelled by percolation. Applications of this standard model range from amorphous and porous media to composites, branched polymers, gels and complex ionic conductors.
Heitjans, Paul +4 more
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An Investigation of Methanol Anomalous Diffusion in Mesoporous Silica
Фізика і хімія твердого тіла, 2016 Methanol transport in mesoporous silica is investigated. It is demonstrated that usual approach based on the second Fick’s law fails describing the experimental kinetic data.
A. A. Zhokh, P. E. Strizhak
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