Gigiena i sanitariia
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Gigiena i sanitariia · May 2003
[Microbiological criteria in the evaluation of drinking water quality].
The obtained materials are indicative of a need to introduce new approaches towards both the process of drinking-water preparation and the evaluation of the drinking-water quality. It is necessary to take account of the symbiotic relations between the sanitary-significant bacteria, on the one hand, and algae and protozoa ensuring the survival of pathogens in the environment and worsening the water sanitary parameters, on the other hand, in working out the microbiological criteria applicable to the evaluation of the safety of drinking-water supply. Bacteria persistence can be reliable criteria in assessing the drinking-water quality. The use of qualitative characteristics (determination of persistent properties of microflora) alongside with the quantitative parameters should enhance the reliability of sanitary-and-microbiological assessments of the drinking-water quality.
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Gigiena i sanitariia · May 2003
[Dynamics of physical development of school children in the city of Novosibirsk].
An analysis of physical development of schoolchildren, aged 7 to 17, and held during the recent 40 years in the city of Novosibirsk, showed an improvement only within an interval ranging from 1959 to 1969. A slow-down of development rate and a reduced length and weight of the body and muscle power were registered among schoolchildren with the peak values falling on 2001 and being indicative of the acceleration seizure. The authors suppose that it is related with a number of unfavorable ecological-and-hygienic and social-and-economic factors.