In these models, the size of paramagnetic agent compartment is comparable to the mean diffusion displacement of water molecules during the long RF pulses that are used to generate the off-resonance rotating frame.
The mean diffusion coefficient of the surfactant can be written as a linear combination of the contributions from a free monomolecular, a micelle-forming, and a host-bound surfactant.
For example, Camargo et al. [ 104] reported a mean diffusion rate of 1.1 m/year for the lizard Liolaemus darwinii and a maximum value of 17 m/year at the beginning of rapid range expansion.
Mean diffusion coefficients of LiOH were determined.
The mean diffusion coefficient of the soil profile data is most sensitive to the volumetric water content close to the evaporation front and so modelled evaporation results can be very sensitive to uncertainty around the position of the evaporation front.
Figure 47d shows a histogram of the diffusion constants, which could be fitted with a log-normal distribution, resulting in a mean diffusion constant of 3.2 ± 0.4 nm/s.
Consistent with previous reports, ΔF508 CFTR exhibited higher mobility compared to WT CFTR, with mean diffusion coefficients of 0.0139 vs 0.00417 μm/s.
The mean diffusion coefficient of ΔF508 CFTR molecules that were subjected to VX-809 decreased substantially, by 41% (0.00819 vs 0.0139 μm/s), as also indicated by the more confined trajectories of ΔF508 CFTR molecules treated with VX-809.
Thus, the mean diffusion constant of full-length PKCα was reproducibly slower on the PIP2-containing membranes, but the slowing was at the edge of statistical significance (p = 0.20).
The mean diffusion coefficient (D) of the TF is 10 μms−1; the sampling interval (δt) is 10 ms. Under this condition, the X, Y, Z step sizes are about 14 nm (when N i = 1) much smaller than the target size, suggesting that the space is not under-sampled.
