Exact(1)
This paper investigates a white matter model consisting of a matrix of coated cylinders with distinct diffusion coefficients and spin concentrations for each of the cylinder core, the coating, and the surrounding bath and compares results with an the analytical solution developed by Sen and Basser for the long diffusion time limit.
Similar(59)
RGS proteins may stabilize an active GPCR/G protein/channel complex to limit the diffusion time necessary for activation and deactivation [ 11, 12].
Furthermore, by analyzing the relaxation time of island coalescence events we determine the dominant mass transport on the Au(0 0 1) electrode to be terrace diffusion where the time limiting step of the migration process is the creation of transport species at the island edge rather than the hopping of species on the surface.
Finally, everything is limited by diffusion time and probability to observe a transition is dropping to baseline level.
In addition, steady-state Laplace PDEs can be formulated to produce the homogenized diffusion tensor that describes the diffusion characteristics of the medium in the long time limit.
Pheromones diffuse and evaporate; diffusion widens the trail, while evaporation provides a time limit on its availability.
In this time limit where fluctuations resulting from rotational diffusion are not averaged out, the molecule is assumed to be stationary (frozen) as regards to translational diffusion, but still rotating.
In conclusion, the variance of the time-averaged intensity extracted from the variance of the time-integrated measured intensity, is analyzed in the short time limit where fluctuations resulting from rotational diffusion are not averaged out.
In this paper, the variance of the time-averaged fluorescence intensity extracted from the second moment of the measured fluorescence intensity is analyzed in the short time limit, before fluctuations resulting from rotational diffusion average out.
By analyzing the mean and the variance of the time-averaged fluorescence signals in the time limit where fluctuations as a result of rotational diffusion are not averaged out, rotational correlation times of the fluorescent molecule can then be extracted.
However, the membrane also increases the diffusion time for O2 to reach the electrode surface and thus limits the temporal resolution (for discussion see Bolger et al., 2011).
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