In the bottom SOURCE layer, the horizontal spreading of molecules from the inlet follows the normal diffusion equation, assuming a constant diffusion coefficient, D0 = 57 μm2/s, in aqueous culture medium53.
The first two terms are the normal diffusion partial differential equation.
The substrate input is assumed to be governed by a Poisson process with mean k in ; this is consistent with substrate transport to the compartment being dominated by normal diffusion.
The autocorrelation curves of each individual measured point are then fitted by a normal diffusion model, as described in [34].
Substances like oxygen are transported into and out of cells by normal diffusion while molecules like glucose require facilitated diffusion processes.
When administered systemically, these agents are distributed to both normal and tumor tissues by normal diffusion through capillaries [ 6].
Below the nm scale, normal diffusion is guided by Brownian motion and results in particle mean square displacements that increase linearly with time, while diffusion coefficients decrease with hydrodynamic forces.
As a result, the movement of animals cannot often obey the rule of normal diffusion, but it obeys Lévy diffusion which is described by a fractional Laplacian operator.
The linear, upward, and downward relationships in MSD indicate the movements are in normal diffusion, directed motion with diffusion, and anomalous diffusion, respectively.
Ferricinium reduction, while complicated in water by precipitation of ferrocene, showed solution behaviour and normal diffusion control in the liquid crystal.
