pore diffusion
11Porosity — or void fraction is a measure of the void (i.e., empty ) spaces in a material, and is a fraction of the volume of voids over the total volume, between 0–1, or as a percentage between 0–100%. The term is used in multiple fields including… …
12Mass diffusivity — This article is about coefficient of molecular diffusion of mass. For other uses, see Diffusivity (disambiguation). Diffusivity or diffusion coefficient is a proportionality constant between the molar flux due to molecular diffusion and the… …
13Konstriktivität — (eng.: constrictivity, v. lat.: constringere „festschnüren, fesseln, lahmlegen“) ist eine dimensionslose geometrische Größe (Formelzeichen: δ), die den Widerstand enger Poren gegen Transportprozesse wie Diffusion beschreibt. Sie ist abhängig vom… …
14cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …
15Sintering — is a method used to create objects from powders. It is based on atomic diffusion. Diffusion occurs in any material above absolute zero but it occurs much faster at higher temperatures. In most sintering processes the powdered material is held in… …
16Membrane transport — In cellular biology the term membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes namely lipid bilayers that contain proteins embedded in them …
17metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …
18Knudsen-Diffusionskoeffizient — Knudsen Diffusion (nach Martin Knudsen) bezeichnet Diffusionsprozesse, bei denen Teilchen öfter mit Fließbegrenzungen als mit anderen Teilchen zusammenstoßen. Dies bedeutet, dass die mittlere freie Weglänge der Teilchen größer ist als eine… …
19Knudsendiffusion — Knudsen Diffusion (nach Martin Knudsen) bezeichnet Diffusionsprozesse, bei denen Teilchen öfter mit Fließbegrenzungen als mit anderen Teilchen zusammenstoßen. Dies bedeutet, dass die mittlere freie Weglänge der Teilchen größer ist als eine… …
20Tissue engineering — Principle of tissue engineering Tissue engineering was once categorized as a sub field of bio materials, but having grown in scope and importance it can be considered as a field in its own right. It is the use of a combination of cells,… …
