However, it is content mixing, that is, the diffusion between compartments of small molecules with size comparable or slightly larger to that of neurotransmitter molecules that is the correlate for neurotransmitter release.
It is assumed that x 1 ( 0 ) = 0.5, x 2 ( 0 ) = 0.3, x 1 ∗ = 1, a = 3, b = 1, c = 1, d = 0, that is to say, there is no diffusion between these two patches; the time-series of x 1 ( t ) and x 2 ( t ) and the phase portrait of system (2.1) can be seen in Figure 1.
From the results of the numerical analysis, we can know that the diffusion plays an important role in the permanence of system (2.1), that is to say, when there is no diffusion between two patches, the population in Patch 2 will go extinct; when there is a relatively small diffusion rate, the population in Patch 2 will be permanent.
This is because diffusion between the coating and the substrate was promoted and a diffusion layer approximately 30-μm thick was formed by laser heating and melting.
In addition to possible obstruction of diffusion by mitochondrial outer membrane in this preparation, experiments showed that there is a diffusion restriction between mitochondria and the surrounding solution that groups together ATPases and mitochondria so that endogenously generated ADP has preferential access to mitochondria (14, 32, 34).
The increase of the anodic diffusion path length reduces the electrochemical reaction time that occurs at TPB, which is the gas diffusion between the reaction sites and the electrode surface.
Where, F ex is the diffusion flux of CO2 between river water and the atmosphere; D represents the diffusion coefficient of CO2 in the river; z is the thickness of boundary layer; C eq in μmol/L is the dissolved CO2 concentration in equilibrium with the atmosphere; and C in μmol/L stands for the measured dissolved CO2 concentration in the water.
Fairly good correlation is found between diffusion coefficient and air permeability for all cement types.
In particular, the calculated results agree with the literature experimental data, indicating that the gasification mechanism of multicomponent fuels is intermediate between diffusion and distillation limits.
In each case, there is considerable fluidity and easy diffusion between the layers is possible though their viscosities are much higher than nematic phases [55, 57].
