[Activities of the Health Center providing health care for Nuclear Power Station workers and for nearby residents].

The authors evaluate relationships of parameters describing activities of Health center and selected according to "discrete correlation galaxies" method with characteristics of health state of population covered by the center. The article contains mathematic models that could be a basis for forecasting changes of health state characteristics under variation of Health center activity parameters.

[Features of cardiovascular diseases in cleaners-up of consequences of the Chernobyl Nuclear Power Station accident and in residents of territories polluted by radionuclides].

The authors discuss features of cardiovascular diseases in liquidators of Chernobyl nuclear power station accident consequences and in residents of territories polluted with radionuclides, present recommendations on correction of risk factors leading to atherosclerosis--the main cause of cardiovascular complications.

[Infrasound: body's effects and hygienic regulation].

The paper analyzes and sums up technically originated infrasound (IS) hygienic problems. Trends for an increase in its role as an unfavourable factor of the industrial, transport, and residential environments are established. Comprehensive physiological, hygienic, and experimental studies revealed the pathogenetic features of IS.

[Hygienic and biomedical aspects of the effects of infrasound].

The work lists the sources of infrasound and its spectral characteristics. Working places are classified by infra-low frequency band noise characteristics; the factor is graded by the health risk zones and also by classes of harm and danger for the health of the workers depending on the factor parameters. Volunteer cochleovestibular apparatus reaction peculiarities are revealed and infrasound induced hypothalamic symptom-complex development possibility estimation method is presented.