Biomedical subjects
Publications and source records attributed to A A Kist.
Data of the chemical elements content in blood, placenta, breast milk, hairs of Sariasy region in Surhandarya area inhabitants are given. This region is situated under aluminium work discharge. High content of fluorine and very low levels of selenium, chromium, manganese, iron, cobalt, copper in hairs were noted.
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The content of 24 elements has been determined in 2000 hair samples of the inhabitants of Uzbekistan. INAA was used for analysis. Reference material IAEA HH-1 and laboratory standards were used. Measurements were done using a Ge(Li) detector and a multi-channel analyzer. No correlation was found between the element content and hair color and ethnic group, whereas the content of some elements depended on sex, hemoglobin content, blood group, and occupation. Arithmetical and geometrical means and medians were calculated. Cumulative histograms show mainly lognormal distributions. Maps of selected regions, based on the elemental hair composition data, were made. The element content was shown to depend on the location of large cities and biogeochemical anomalies. The relationship between the death rate and the element content in hair in some countries has been shown.
Analytical nuclear physics methods, as well as radioanalytical, X-ray, and radiometric techniques are widely used in the Soviet Union in life sciences studies. Main approaches to the study of natural materials by activation analysis, including bulk analyses, localized analyses, speciation, and in vivo experiments are described. Examples of applications in agriculture to increase protein content of wheat, to improve crop yield, and to enhance resistivity of cotton plants to diseases are given. Activation analysis is used in medicine for prognosis and study of processes of pathogenesis. Detailed information on trace elements is valuable in environmental studies, and general regularities in biogeochemistry may be clarified with activation analysis.
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