Slow mode reproducibility

Figure 9.18. (a) Long-time rate constant of forward reaction as a function of coupling in a stochastic Markovian model of reversible ET assisted by a fast vibrational mode for AG = — 2E E, = ISfegT and several values of Ef / (numbers attached to the curves), (b) The results for a 2D Markovian model with biexponential relaxation for E = El = 9k T, AG = —2E, and several values of t /t (numbers attached to the curves). The parameters Xj-and Tj denote the relaxation times of the fast and the slow mode, respectively. Note that here we have full , = - - E fixed. (Reproduced from [309].)... 

As demonstrated by the power spectra in Figs. 12.2a and 12.3b, regulation of the blood flow to the individual nephron involves several oscillatory modes. The two dominating time scales are associated with the period Tsiow 30—40 s of the slow TGF-mediated oscillations and the somewhat shorter time scale Tjast 5—10 s defined by the myogenic oscillations of the afferent arteriolar diameter. The two modes interact because they both involve activation of smooth muscle cells in the arteriolar wall. Our model describes these mechanisms and the coupling between the two modes, and it also reproduces the observed multi-mode dynamics. We can, therefore, use the model to examine some of the phenomena that can be expected to arise from the interaction between the two modes. 

Fig. 3.16 (a) Formation of parallel ridges on PS imaged by CM-AFM under a load of 30 nN. The slow scan axis (down scan) was disabled hence the vertical axis corresponds to time. Reproduced with permission from [41]. Copyright 1999. Elsevier, (b) Contact mode AFM height image acquired with minimized forces on a PS film scanned previously with high... 

Figure 3.39. Mass loss curves of a 72-28 ethylene-vinyl acetate copolymer. Curve (a) was obtained by heating at 10°C/min. Curve (b) was produced using autostepwise software, which automatically switched the 10 °C/min rate to an isothermal mode when the mass loss rate increased to a preselected value and returned to the initial heating rate when the mass loss rate slowed to an also preselected small value. [From Hale and Bair (1997) reproduced by permission from Elsevier).]...

Figure 7.4. Schematic representation of the orientations of the enantiomers of bicy-clo[3.2.1]-2-octanone in their preferred flat positions within the diamond lattice section of HLADH. Delivery of H to the carbonyl group from the e-re direction ensures the formation of an exo-alcohol. In (a) orientation of (H-)-isomer as shown does not place any substituents at undesirable positions. Reduction to the observed (—)-product is thus facile. The corresponding orientation of the enantiomeric ( —)-ketone is shown in (b). Here, C-7 is required to locate close to the unsatisfactory position I and reduction in this mode is not favored. Formation of (-h)-product is thus a relatively slow process (282). Reproduced with permission. Copyright 1978 by the American Chemical...

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