Results 1 to 10 of about 333,521 (317)

Spin transport in diffusive superconductors [PDF]

open access: yesPhysical 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
openaire   +3 more sources

Intracellular transport by active diffusion [PDF]

open access: yesTrends 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
openaire   +3 more sources

Chaos, Transport and Diffusion

open access: yes, 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
openaire   +4 more sources

Molecular Diffusion of Toluene through CaCO3-Filled Natural Rubber Composites [PDF]

open access: yesعلوم 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
doaj   +1 more source

Drug Diffusion Transport Through Human Skin

open access: yesInternational 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
doaj   +1 more source

Diffusion and transport of extracellular vesicles [PDF]

open access: yesNature 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.
openaire   +2 more sources

Transport and diffusion in the embedding map [PDF]

open access: yesPhysical 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
openaire   +3 more sources

An Investigation of Methanol Anomalous Diffusion in Mesoporous Silica

open access: yesФізика 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
doaj   +1 more source

Transport Properties for Pharmaceutical Controlled-Release Systems: A Brief Review of the Importance of Their Study in Biological Systems

open access: yesBiomolecules, 2018
The goal of this work was to comprehensive study the transport properties of controlled-release systems for the safe and reliable delivery of drugs. Special emphasis has been placed on the measurement of the diffusion of drugs, alone or in combination ...
Ana C. F. Ribeiro, Miguel A. Esteso
doaj   +1 more source

Diffusive Spin Transport [PDF]

open access: yes, 2009
Information to be stored and transported requires physical carriers. The quantum bit of information (qubit) can for instance be realised as the spin 1/2 degree of freedom of a massive particle like an electron or as the spin 1 polarisation of a massless photon.
openaire   +2 more sources

Home - About - Disclaimer - Privacy