Arrhenius behavior techniques

The reversible step may be related to the dynamic crossover in protein hydration water at To 345 5K. NMR self-diffusion results [19] indicate that at this temperature a sudden change in hydration water dynamics occurs and the inverse diffusion constant switches from low-temperature super-Arrhenius behavior to high-temperature Arrhenius behavior. Neutron techniques (QENS) have also been used to study protein hydration water at this high-r crossover. Figure 21 shows the atomic MSD of protein hydration water at the low-r crossover measured using MD simulation. These crossovers can also be shown theoretically. Whenever the slope of an Arrhenius plot of the D T) changes, the specific heat has a peak. The well-known Adam-Gibbs equation (AGE) shows this as... 

R.F, Boyer (Michigan Molecular Institute, Midland, Michigan) I d like to comment on Dr. Yelon s question. You were asking if there s a rate effect on the movement of the so-called T event. After Dr. Enns ironed out all the techniques, we have subsequently examined various polymers as a function of rate and, yes, the transition temperature does move to higher temperatures as the heating rate is increased, more or less as would be expected. In accordance with Dr. Lacabanne s observation [A. Bernes, R.F. Boyer, D. Chatain, C. Lacabanne and J.P. Ibar, contribution in this volume], it does not follow Arrhenius behavior but changes along a curved path. 

---