[Methodical approaches to evaluation of the safety of veterinary preparation application].

Evaluation of toxicologic hazards associated with the use of veterinary preparations against ecto- and endoparasites of animals and poultry with the purpose of prophylaxis and treatment, evaluation of industrial safety and determination of the upper limits of their residue in live-stock products and the environment, underlies protection of population's and operators' health from the effects of the drugs. The article shows the difference between the acute toxicity parameters of cypermethrin isomers and demonstrates that they enter the organism chiefly through the skin.

[Hygienic ranking of basic professions in metallurgical industry according to labor conditions and state of health].

In order to establish priorities in health-improving programs the researchers analyzed the hygienic situation at Novolipetsk metallurgical complex and ranked its technological divisions according to labor conditions of 73 basic professions and state of health of the workers engaged to agglomeration works (AW), chemical-recovery works (CRW), plate rolling (PR) and the workers of a blast-furnace shop (BFS) and an oxygen-converter shop (OCS-I and OSC-II).

[Impact of the climate of the Extreme North and education conditions on young school children].

The scientifically grounded sound regimen is required for schoolchildren, younger ones in particular, who most experience unfavourable environmental factors. Particular emphasis should be laid on the regulation of educational burden at primary school since the irrational distribution of classes leads to the development of fatigue mainly in young schoolchildren and hence to lower working capacities and poor comprehensibility. The investigations have supported the earlier data that the children show the strained body's functional status which is deteriorated by the influence of educational burden.

[Psychoemotional status of primary schoolchildren in the Far North].

Social and natural factors, environmental pollution and general school reforms create prerequisites for deterioration of children's mental health in the Arctic. Therefore, it is necessary to modify an educational process, especially to transfer classes to later hours than those in the temperate zone of the country.