OBJECTIVE: To assess the risk of vitamin and mineral deficiency of the body among contract servicemen while carrying out offshore operations in the temperate latitudes of the Far East.MATERIALS AND METHODS: The signs of vitamin and mineral deficiency among servicemen (n=27) were detected twice with the use of computer program Vita-test: before going to sea and in 2 months (return). There was the analysis of nutrient content in the sea rations №3. Before going to sea meals were provided at home. Statistics: After defining the test of raw data normality, significance of differences in dependent parametric samples was carried out by Student’s test, using computer program Statistica-6.1.RESULTS: An imbalanced diet led to increase in signs of vitamin and mineral deficiency. By criteria the risk of deficiency signs (initial and after return): on vitamins — average with the growth of 40,3% (р=0,0002), on minerals — low (3 points) and average (5,24 points, р=0,05).DISCUSSION: Vitamin diet correction is updated on sea trips. The present study has proven that as well as necessity to correct mineral deficiency. It showed the possibility of assessing the risk of micronutrient deficiency, using the technology of questionnaire and computer analysis.CONCLUSION: The approach of dynamic monitoring allowed to evaluate the index of studied nutrients, the risk of deficiency while carrying out offshore operations. This method allows to estimate individual and group dynamics of vitamin and mineral balance of a body while working at sea to make decisions on the prevention of nutrient deficiency.

OBJECTIVE: Characterize the climate impact on the population of Petropavlovsk-Kamchatsky regarding warmth sensation in different periods of the year.MATERIALS AND METHODS: The length of a warm and cold period of the year was determined. Based on mean monthly temperatures, relative humidity, wind speed, maximum wind and minimum temperature, taken from the website of weather condition records in Petropavlovsk-Kamchatsky for 2010–2020, the equivalent-effective temperature (EET) has been calculated that allows to estimate the warmth sensation of a man, stripped to the waist.RESULTS AND DISCUSSION: According to the average temperature, the warm period is in June-September, the cold one is 8 months. As for EET, thermal comfort is in July-August; it’s cool in June and September; it’s cool/moderately cool in October; it’s moderately cool in April-May and November; it’s very chilly in December-March. Speaking about minimum temperature and maximum wind, it’s warm in August, warm/cold in September; 10 months is a cold period of the year. By comparing EET, it’s cool in July and August; it’s moderately cool in May, June, September and October; it’s very chilly in April and November, moderately cold in December and March and cold in January. In February conditions are moderately cold/cold.CONCLUSION: Amidst high humidity the wind produces a meaningful effect on a bioclimatic discomfort.

In the context of the intensification of the development of Kamchatka, the assessment of its comfort in terms of weather and climatic conditions is updated to prevent the influence of meteorological indicators on the health of the population. According to indicators for 2010–2020 air temperature (average and minimum), wind (average and maximum), relative humidity assessed the bioclimatic comfort of Petropavlovsk-Kamchatsky as a health risk factor. At an average temperature, the warm period of the year is June-September, there is no cold one; minimum — warm in August, cold in December-March. Average wind is strong (5 months) and strong to very strong (7 months); maximum — strong (7 months), from strong to very strong (5 months); in gusts —very strong (3 months), from very strong to stormy (6 months). The air from October to April is moderately dry, then moderately humid. With average meteorological indicators for effective temperature, the warm period of the year is in July-August (September could be both warm and transitional), cold — December-March. At the minimum temperature and maximum wind, there is no warm period of the year, cold — October-May. The influence of physical factors is inadequate for the body: uncomfortable positive temperatures in June-September, high humidity (May-September), year-round strong winds. According to the effective temperature, determined from the average values of physical factors, the warm season is shorter by 2 months, the cold 4 months. At the minimum temperature and maximum wind in the summer season, habitat conditions refer to the transition period, 8 months. to the cold season. There is no health risk based on average effective temperature data; at extreme values, the risk of cold injury within 3 months. (January, February — absolute, December — possible); with increased wind, the risk arises in the month of March.