Examples of using Diffusion coefficient in English and their translations into German
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The diffusion coefficient of a substance indicates how fast it moves in the crystal.
Derivation of the calculation formula for the diffusion coefficients for the given experimental conditions.
Choose"Diffusion Coefficient", and write"Slippage at polymer surface" in the remarks.
Change of place of adsorption in PES, static energy fluctuation, molar diffusion coefficient, transition state theory, etc.
Dv the diffusion coefficient; this coefficient is assumed to be independent of the concentration.
The diffusion measurements gave values for effective diffusion coefficients and diffusion accessible porosities.
As well as the adsorption, the rate of change of surface tension is also determined by the diffusion of the volume phase at the interface,as a result of which it is also expedient to determine the diffusion coefficient.
Mg/m3 dry density can be described as diffusion with a diffusion coefficient of the order of magnitude of 3·× 10-10 m2/s.
As the ratio between the diffusion coefficient,(a measure for the thermal movement), of the gas in water and that of the gas in steam is approximately 10-4, the deaeration rate is fully determined by the transportation of the gas molecules in the water.
Dynamic light scattering is a measurement method, in which from the diffusion coefficient the size and size distribution of particles is calculated.
To calculate the changes in concentration in the solidifying volume unit, the following assumptions were made:(a) there is no material exchange during solidification between the volume unit and its surroundings;(b) in the residual melt in the volume unit there is no marked concentration gradient; c there is equilibrium at the liquid-solid phase boundary;d the diffusion coefficient in the solid D~(t) is independent of concentration.
Important input parameters are the diffusion coefficient of the radionuclides in free bulk water and the transport relevant porosity.
Ca ions rather than Na ions in the MX-80 and Na ions rather than Ca ions in the Montigel,had no effect on the diffusion coefficients of the iron(II) ions.
Hence, the analysis allows the extraction of the diffusion coefficient and parameter values for the sorption isotherm or rate-constants for sorption and desorption.
For this purpose it contains special accessories for experiments in extended temperature ranges,for the measurement of diffusion coefficients and for analysis of solids.
Using state-of-the-art methods it is also possible to predict diffusion coefficients for a material with specific chemical compositions Ding2014, Muehlbacher2015, Bochkarev2016.
The following assumptions are made for calculation of the concentration variations in the solidifying volume element: a during solidification, there is no materials exchange between the element and its surroundingsj b there is no marked concentrat ion gradient in the remaining melt of the volume element; c equilibrium conditions prevail at the solidliquid phase boundary;d the diffusion coefficient in the solid D„(t) is independent of concentration.
In this variant, the generation of edges is not achieved by variation of the diffusion coefficient g, but the constant coefficient g=1 and thus isotropic diffusion is used.
Owing to the great difference between the diffusion coefficient of the gas in water and that of the gas in steam the deaeration rate will be determined by the diffusion zone on the water side of the contact surface.
Thus distribution coefficients(Kd)determined on dispersed systems were used to calculate apparent diffusion coefficients(Da) subsequently applied in diffusive transport calculations for the highly compacted system.
A major disadvantage of the Maxwell-Stefan theory is that the diffusion coefficients, with the exception of the diffusion of dilute gases, do not correspond to the Fick's diffusion coefficients and are therefore not tabulated.