Secondly, Fick's law states that the random wandering causes an average drift of particles from regions where they are denser to regions where they are rarer, and that the mean drift rate is proportional to the gradient of density and in the opposite sense to the gradient: where D is a constant the diffusion constant.
For high-field ionic drift, the overall effect on the average drift velocity of the ions is given by the model as [69]: nu approx {f}_e{a}_p{e}^{-frac{E_a}{k_BT}}sinh left( qE{a}_p/2{k}_BTright) nu =left{begin{array}{c}-mu E,kern0.5em Ell {E}_0 mu {E}_0{e}^{E/{E}_0},kern0.5em Esim {E}_0end{array}right. (21).
Average drifting biomass of the benthos was 0.039 mg m−3 (dry mass ±0.016, n=5), which mostly were larval Chironomidae and Dixidae.
Under the same "drift and deletion" hypothesis used to derive the Eq. 7 such K s -distribution N d (K s ) should also have an exponential decaying form Nd(K s ) ~ exp(− r del ∗ K s / μ ¯ s ), where μ ¯ s is the average drift velocity of K s immediately following the duplication event.
However, this does not imply causality in terms of the higher average drift driving the higher average incidence.
The location of the centre of the SAA is found to drift westwards with an average drift rate of about 0.24 deg/year and northward with an average drift rate of about 0.12 deg/year.
This can be used to forecast the arrival of a bubble at a certain longitude eastward of the detection location, e.g., 750 km eastward after 1.5 hours assuming an average drift speed of 140 m/s.
The average drift ratios at first yielding of the wide beam longitudinal reinforcement, δyo, and at failure, δu, were 2.2%and4.5%5% respectively; the displacement ductility ratio μ was approximately 2.2.
In each trial, the DV follows a stochastic 'drift-diffusion' path with an average drift rate dependent on the mean of e = kC.
As mentioned earlier, electrons acquire some average drift velocity v under the influence of an electric field in a wire.
