31. There are additional terms proportional to the diffusion coefficient D that account for the exchange of material between boxes. 32. An example of this is the measurement of the diffusion coefficient of a fluorescent lipid analogue in soybean protoplasts. 33. In a multicomponent system, a set of approximate formulas exist to predict the Maxwell Stefan-diffusion coefficient . 34. In MTR-MRI, the apparent diffusion coefficient ( ADCav ) is a measure of water molecule motion. 35. Somewhat intuitively, the materials with the highest diffusion coefficients have a more open pore structure, thus losing selectivity. 36. The diffusivity for Knudsen diffusion is obtained from the self-diffusion coefficient derived from the kinetic theory of gases: 37. Typically, a compound's diffusion coefficient is ~ 10, 000?as great in air as in water. 38. The growth of a composition modulation in an initially homogeneous alloy implies uphill diffusion, or a negative diffusion coefficient . 39. He used PFG NMR to follow the diffusion of small molecules or ions and determine their self-diffusion coefficient . 40. With t as contact time and D _ b as the diffusion coefficient of the mucoadhesive material in the mucus.
