[A Cellular Automata Model for a Community Comprising Two Plant Species of Different Growth Forms].

A cellular automata computer model for the interactions between two plant species of different growth forms--the lime hairgrass Deschampsia caespitosa (L.) P. Beauv., a sod cereal, and the moneywort Lysimachia nummularia L., a ground creeping perennial herb--is considered. Computer experiments on the self-maintenance of the populations of each species against the background of a gradual increase in the share of randomly eliminated individuals, coexistence of the populations of two species, and the effect of the phytogenous field have been conducted. As has been shown, all the studied factors determine the number of individuals and self-sustainability of the simulated populations by the degree of their impact. The limits of action have been determined for individual factors; within these limits, the specific features in plant reproduction and dispersal provide sustainable coexistence of the simulated populations. It has been demonstrated that the constructed model allows for studying the long-term developmental dynamics of the plants belonging to the selected growth forms.

[Influence of magnitolaser radiation on the acetylcholinergic neurons in culture].

The influence of magnitolaser radiation on the striated acetylcholinergic neurons was tested on the tissue culture derived from a newborn rat's brain. After 5 days of cultivation of brain cells, the authors carried out 10 everyday sessions using a magnitolaser "KMILTA" with infrared radiation. It was established on the bases of obtained results that AchE activity reliably increases in 1,3-fold compared with the control group. Thus magnitolaser radiation stimulates activation of regenerative processes in the striatal acetylcholinergic neurons.