adaptation

The Functional State of Systemic Hemodynamics Russian and Foreign Students at Orthostasis

This work is devoted to the comparative analysis of the functional state of systemic hemodynamics in Russian and foreign students depending on the localization of the transition zone in the chest leads of ECG during the active orthostatic test. Having assessed physical development, we measured the parameters of arterial pressure and ECG using the module «Electrocardiogram» APK «Valenta». The prevalence of asthenic type of physique in foreign students against the deficiency of physical development determines the vertical position of the heart.

Ability of Drosophila Melanogaster from Natural Populations to Adapt to Anthropogenic Genotoxicants

The results of long-term studies of the ability of the inbred population of Drosophila melanogaster living in a vegetable store to adapt to the genotoxic effect of a half-lethal dose of benzotriazole are presented. A part of the imago was taken from the population, afterwards they were bred on a standard fodder used for the Drosophila laboratory lines, this was done every ten years from 1980 to 2010. Female and male imago were separately subjected to a single exposure to benzotriazole in a semi-lethal dose.

The Adaptations of Woody Plants after a Thermal Stress in the Khopyor River Region

The living state of woody plants having different levels of thermal damages in the summer of 2010 was studied. It is shown that a number of species had partial drying out and the death of trees unevenly in plantations of different age and localities. In a favourable ecological environment they remained healthy. They are mesophytes and mesohygrophytes which are on the southern border of the areas, mostly explerents. The trees and shrubs of floodplain forests and certain introducents are tolerant of a thermal stress.