molecular diffusion coefficient

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• molecular diffusion, coefficient of —    The component of mass transport flux of solutes (at the microscopic level) due to variations in solute concentrations within the fluid phases. Synonymous with diffusion coefficient [22] …   Lexicon of Cave and Karst Terminology

• diffusion coefficient —    See molecular diffusion, coefficient of …   Lexicon of Cave and Karst Terminology

• Molecular diffusion — This article is about spontaneous dispersion of mass. For a more generic treatment of diffusion, see Diffusion. Diffusion from a microscopic and macroscopic point of view. Initially, there are solute molecules on the left side of a barrier… …   Wikipedia

• diffusion coefficient — the number of milliliters of a gas that will diffuse at a distance of 0.001 mm over a square centimeter surface per minute, at 1 atm of pressure. The diffusion coefficient for any given gas is proportional to the solubility and molecular weight… …   Medical dictionary

• diffusion coefficient — (= diffusion constant) For the translational diffusion of solutes, diffusion is described by Fick s First Law, that states that the amount of a substance crossing a given area is proportional to the spatial gradient of concentration and the… …   Dictionary of molecular biology

• Apparent Diffusion Coefficient — Der Diffusionskoeffizient (oder Diffusionskonstante) dient in den Fickschen Gesetzen zur Berechnung des thermisch bedingten Transports eines Stoffes aufgrund der zufälligen Bewegung der Teilchen. Dabei kann es sich um einzelne Atome in einem… …   Deutsch Wikipedia

• Diffusion MRI — Diagnostics DTI Color Map MeSH D038524 Diffusion MRI is a mag …   Wikipedia

• Molecular imaging — originated from the field of radiopharmacology due to the need to better understand the fundamental molecular pathways inside organisms in a noninvasive manner. Contents 1 …   Wikipedia

• Fick's laws of diffusion — For the technique of measuring cardiac output, see Fick principle. Molecular diffusion from a microscopic and macroscopic point of view. Initially, there are solute molecules on the left side of a barrier (purple line) and none on the right. The… …   Wikipedia

• Maxwell–Stefan diffusion — The Maxwell–Stefan diffusion (or Stefan–Maxwell diffusion) is a model for describing diffusion in multicomponent systems. The equations that describe these transport processes have been developed independently and in parallel by James Clerk… …   Wikipedia

• Surface diffusion — [ adatom diffusing across a square surface lattice. Note the frequency of vibration of the adatom is greater than the jump rate to nearby sites. Also, the model displays examples of both nearest neighbor jumps (straight) and next nearest neighbor …   Wikipedia