diffusion coefficient


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diffusion coefficient

[də′fyü·zhən ‚kō·i′fish·ənt]
(physics)
The weight of a material, in grams, diffusing across an area of 1 square centimeter in 1 second in a unit concentration gradient. Also known as diffusivity.
References in periodicals archive ?
The diffusion coefficient and its activation energy are determined via gravimetric determination of moisture desorption.
are auxiliary parameters expressing connections between the diffusion coefficients of individual components.
Just as diffusion coefficient, parameter [XI] increase with temperature.
The diffusion coefficient given by Equation (12) is often referred to as a diffusion coefficient in a Poiseuille flow regime.
Apparent diffusion coefficient of intervertebral discs related to matrix composition and integrity.
DWI studies of the breast carried out internationally by Kul et al, Partridge et al and Palle et al have shown significantly lower apparent diffusion coefficient (ADC) measures for breast carcinomas than for benign breast lesions or normal tissue4-6.
Diffusion-Weighted Imaging of the Parotid Gland: Can the Apparent Diffusion Coefficient Discriminate Between Normal and Abnormal Parotid Gland Tissues?
Determining the effective diffusion coefficient of water in banana (Prata variety) during osmotic dehydration and its use in predictive models.
The apparent diffusion coefficient (ADC), calculated from two b values, is a quantitative analysis of diffusion that has received significant attention in clinical practice (2, 3).
Caption: Figure 1: Patient's brain magnetic resonance imaging: (a) diffusion-weighted image, (b) apparent diffusion coefficient map, and (c) fluid attenuated inversion recovery sequence.
In this work, the results are primarily presented using a sorption coefficient, which is a measure of the rate of solvent uptake at times much less than that needed to achieve equilibrium saturation and an effective diffusion coefficient, which is a measure of the rate of change of solvent content as derived below in the "Materials and Methods" section.

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