No 4 (2014)

The spring settlement of Phrynocephalus guttatus guttatus Gmel. reliably splits into several age groups: 1-2 group of young, 3-4 groups of females and 2- 4 group of males. Senior group of young and two younger groups of mature individuals are aged for about a year and most likely belong to different clutches of eggs of the previous season. The overall ratio sex groups is close to unity, but that in the group of individuals of the first clutch of the year, as a rule, is dominated by females, and from the second - by males. Two older groups of mature animals have age not less than 2 years. The largest and oldest age group includes mostly females. Almost complete replacement of the population in this species most likely occurs in two years.

The article summarizes the epidemiological situation of toxocariasis in Russia, transplacental transmission larvotsist newborn and infection definitive hosts Toxocara canis. Data on soil contamination toxocara eggs were analyzed. We found out an unusual localization of mature females T. canis lightweight in dog's lungs. Canidae form natural synanthropic focus, which worsen the epizootological situation with toxocariasis in Russia.

The basic functions of myocard bioelectrical activity in 308 students of 17-20 years of age were studied by means of electrocardiography during the educational process. The research was carried out with medical diagnostic system “Valenta R”. Recording of 12-lead ECG was made. The study showed that time and amplitude ECG indices change significantly depending on the age and sex of the subjects. It was found out that educational activity has arousal influence on the incidence of cardiac rhythm shift, asequence of activation (partial right bundle branch block), repolarization process abnormalities and inversion of electric axis deviation.

The analysis of literature data on the problems of Human Adaptation to the conditions of the northern region. Shows that the body of the northerners had to adapt to the simultaneous effects of climatic and environmental factors, the impact of which is summed up, adding to the tension of all functional systems of organism.

Process of development of Ivory Coast as all countries of Africa is based on the exploitation of natural resources. But this economic development pattern leads to the destruction of the environment. To solve this problem at the end of the twentieth century there was a key concept of modern ecology: the concept of sustainable development. Every country in the framework of this concept defines its development strategy to preserve its natural wealth, to ensure reduction of social disparities without damaging the environment. The article analyzes the major environmental problems Ivory Coast and the main directions of the concept of sustainable development.

Nowadays problems of water quality continue to be one of the priority and difficult directions of scientific researches in hygiene and ecology fields. In this article authors carry out an integrated assessment of drinking water of water supply systems in Selyatino settlement in the Naro-Fominsk district of the Moscow region on chemical harmlessness indicators. There was revealed the excess of risk levels for population health at peroral intake of drinking water for all wells providing water supply of the settlement.

The paper presents the results of the calculation of air pollution from closed-cycle gas turbine plant (CCGT plant) “Tereshkovo” for basic conditions: peak; regular winter, summer, emergency taking into account the high-rise buildings. Dispersion calculations showed that the concentrations of pollutants at the border of SPZ and residential buildings will not exceed sanitary standards of air quality. On the basis of calculation found that surface concentrations of pollutants do not exceed the standards (MАC) of air cleanliness in the area of residential development; this determines the admissibility of the object in the vicinity of natural complexes and have shown the possibility of reduce the size of SPZ to the border with the construction of a school (up to 200 m in the south- east direction) and to the border of the residential development (up to 280 m in the southern direction)

The article describes some problems arising from teaching natural sciences to the students of ecological specialities in technical institutions for higher education within the last years by the example of the Department for Ichthyology and Ecology of Kaliningrad State Technical University. Possible approaches to solution these problems are offered.