This requires a "2D" model with an additional dynamical variable, which we call the "memory," M. To explain the data, M builds up with its own slow dynamics when B>0 and then, upon EN stimulation, accelerates the relaxation of B toward B = −1 (red equations in Figure 3; see Text S1, Sections 1.2 and 1.3).
Secondly, we assumed that the four stations had the same relaxation times (b, e, and g).
Figure 6 ({text{G}}_{0}^{{prime }}) (a) and relaxation time (b) as a function of PEO content.
Firstly, we assumed that the relaxation times b, e, and g of the three components (east, north, and up, respectively) of the displacements were the same.
The model with a fixed pool shows a rich phase diagram with several characteristic behaviors: (a) an extremely long relaxation time, (b) fast relaxation preceded by oscillating behavior of the medium opinion, and (c) an even faster relaxation with an erratic medium.
The slow relaxation of B from the initial negative value at the beginning of egestion back toward positive values can thus be pictured as acting like a count-down timer of the duration of the egestion, expiring when B reaches zero and thereby setting the maximal length of strip that can be egested.
Figure 3 shows twitch time-to-peak (A) and half-relaxation time (B) for EDL muscles from adult and aged male and female mice.
(A) Transverse relaxation rates R2, (B) longitudinal relaxation rates R1, (C) 15N heteronuclear NOE (XNOE).
(a) T 2-weighted MR images of N Chitosan-DMNPs in aqueous solution and (b) relaxation rate (R 2) versus N Chitosan-DMNPs concentration.
