Extrapolation of Kinetic Data for Reactions Involving Weak Electrolytes.

Intestinal Transport of Weak Electrolytes

A study has been made of the transmural fluxes of benzoic, phenylacetic, and pentanoic acids, benzylamine, hexylamine, and D-amphetamine across rat jejunum incubated in vitro. The M to S fluxes of the weak acids were greater than their corresponding S to M fluxes, and the S to M fluxes of the weak bases were larger than their M to S fluxes. These patterns of asymmetric movements were observed w...

Weak Algebraic Hyperstructures as a Model for Interpretation of Chemical Reactions

The concept of weak algebraic hyperstructures or Hv-structures constitutes a generalization of the well-known algebraic hyperstructures (semihypergroup, hypergroup and so on). The overall aim of this paper is to present an introduction to some of the results, methods and ideas about chemical examples of weak algebraic hyperstructures. In this paper after an introduction of basic definitions and...

Extrapolation of carcinogenesis data

Limits of Kinetic Schemes for Exciton Reactions

In this communication we analyze exciton annihilation reactions under spatial constraints. Such limitations often lower the effective dimension, an aspect which can be well-modelled through fractals. Thus, qualitative deviations of the reaction pattern from the kinetic scheme occur and allow to highlight the limits of the kinetic approach. Excitons are prone to relax through a whole game of rea...

A kinetic investigation of unimolecular reactions involving trace metals at post-combustion flue gas conditions

Ab-initio methods were carried out to calculate forward and reverse rate constant data for the following reactions: HgþCl22HgCl2, HgClþCl2HgCl2, HgþO2HgO, and SeþH22SeH2. Theoretical predictions of bond distances, vibrational frequencies and enthalpies of reaction are compared to available experimental data to determine the level of theory most appropriate for predicting kinetic parameters. The...