[Spatial distribution of soil animals: a geostatistical approach].

Spatial distribution is one of the main parameters of populations of soil animals. Spatial soil ecology having been developing during last decades bases animal distribution estimates on the geostatistic approach. A simple principle underlying the latter's methodology is that samples placed close to each other have more similarity than those distantly placed, it is usually called autocorrelation.

[A model of enzymatic decarboxylation of glutamic acid].

Interaction of glutamate decarboxylase with its adequate substrate and some quasi-substrates was studied by spectrokinetic, quantum-chemical and some other approaches. It was shown that in the course of decarboxylation an abortive transamination of pyridoxal-5'-phosphate leading to the enzyme inactivation does occur. Identification of intermediate coenzyme-substrate complexes allowed to formulate a model of enzymatic decarboxylation taking into account both the main and abortive reactions.

[Electron spectroscopy and the electron structure of molecules].

The experimental-theoretical approach to the study of physico-chemical, in particular, spectroscopic and photochemical properties of groups of related molecules is considered. The problem of physically correct spectral decompositions of complex electronic spectra into bands corresponding to separate electronic transitions and of the information obtained therefrom is discussed. Concrete examples of revealing photo- and enzymatic reaction mechanisms by combined spectroscopic and theoretical studies of molecular electronic structure and spectra are given.