In deriving the first equation, Darken referenced Simgelskas and Kirkendall's experiment which tested the mechanisms and rates of diffusion, and gave rise to the concept now known as the Kirkendall effect.
32.
First, when the poisoning reaction rate is slow relative to the rate of diffusion, the poison will be evenly distributed throughout the catalyst and will result in homogeneous poisoning of the catalyst.
33.
If the potential applied to the working electrode is great enough ( an overpotential ), then the concentration of analyte next to the working electrode will depend entirely on the rate of diffusion.
34.
Peclet number is defined to be the ratio of the rate of convection of a physical quantity by the flow to the rate of diffusion of the same quantity driven by an appropriate gradient.
35.
Members of the MAUD Committee ( especially Francis Simon and Nicholas Kurti ) proposed the use of gaseous diffusion for isotope separation, since, according to Graham's law the rate of diffusion is inversely proportional to molecular mass.
36.
The dynamics of EtO sterilization can be explained by reference to Fick's first law of diffusion, J = �D dc / dx, where the rate of diffusion ( J ) is directly proportional to the concentration gradient.
37.
Delving further into the mathematical relationships of selective poisoning, or " Pore-Mouth " poisoning, looking at the steady-state conditions, the rate of diffusion of the reactant through the poisoned region is equal to the rate of reaction.
38.
In DTI, each voxel has one or more pairs of parameters : a rate of diffusion and a preferred direction of diffusion & mdash; described in terms of three-dimensional space & mdash; for which that parameter is valid.
39.
:Besides air currents, the main factor affecting the " speed of smell " is simple diffusion . ( A question for others with a better understanding of physics : Is there a known rate of diffusion in still air?
40.
The analysis is most simple when the fluorescence recovery is limited by either the rate of diffusion into the bleached area or by rate at which bleached proteins unbind from their binding sites within the bleached area, and are replaced by fluorescent protein.
