A variety of chemical systems exhibit multiple reaction pathways that adjoin to a common reactant state. In fact, any reaction producing side products or proceeding via a stable intermediate involves a species possessing at least two reaction pathways. Despite improvements in ab initio transition-state search algorithms it remains difficult to detect multiple reaction pathways. Typically, multi...

The investigation of enzyme reaction kinetics in nanoconfined spaces mimicking the conditions in living systems is of great significance. Here, a nanofluidics chip integrated with an electrochemical detector has been designed for studying "free state" enzyme reaction kinetics in nanoconfinement. The nanofluidics chip is fabricated using the UV-ablation technique developed in our group. The enzy...

Seideman and Miller have recently introduced a direct, &cient method for calculating cumulative reaction probabilities by using a discrete variable representation to represent the Green function and absorbing boundary conditions to enfonx the outgoing wave boundary conditions. It is shown that this method for representing the Green function can also be used to calculate state specific reaction ...

A study of the strangeness production reaction pp→pK + Λ for excess energies of ǫ ≤ 150 MeV, accessible at high-luminosity accelerator facilities like COSY, is presented. Methods to analyze the Dalitz plot distribution and angular spectra in the Jackson and helicity frames are worked out and suitable observables for extracting information on low lying resonances that couple to the KΛ system and...

A considerable efforr has been devoted to ab initio theoretical studies Cl-161 * of the H4 potential surface in order to locate a structure that might correspond to the transition state for the four-center exchange reaction H, + D2 + 2HD and to characterize the long-range intermolecular interaction. To date a satisfactory structure for the transition state has not been located. Various shock-tu...

Two species of animals are competing in the same environment. Under what conditions do they coexist peacefully? Or under what conditions does either one of the two species become extinct, that is, is either one of the two species excluded by the other? It is natural to say that they can coexist peacefully if their rates of reproduction and self-limitation are relatively larger than those of com...

We obtain an accurate long-time solution for the diffusive kinetics of an excited geminate pair dissociating reversibly in solution, where the excited-state lifetimes of the bound and unbound states may be nonequal. We analyze the long-time asymptotic behavior, finding a transition between two types of behaviors. In region A, the excited bound pair decays as t exp(2t/t08), where t08 is the life...

There is great interest in the technique of using transfer reaction observables to investigate aspects of the internal structure of composite projectiles. The work of Johnson, ' which showed the sensitivity of calculated tensor analyzing powers to the D-state component of the relative motion of the transferred (x) and residual (b) clusters in the projectile (a), has led to extensive experimenta...