[Unification of methods for determining the trace quantities of lead, zinc, sodium and potassium ions in the assessment of drinking water adn transfusion fluid quality]. / Unifikatsiia metodov opredeleniia sledovykh kolichestv ionov svintsa, tsinka, natriia i kaliia pri otsenke kachestva pit'evoi vody i transfuzionnykh zhidkostei.

The results of long-term studies made by the Department of General Chemistry, I. M. Sechenov Moscow Medical Academy, that deals with unification of methods for determining some ions of metals (lead, zinc, sodium, and potassium) in the assessment of the quality of drinking water and transfusion fluids are summarized. A procedure was developed to determine the trace impurities of zinc, lead, and silver by atomic absorption spectrometry (AAS) by using sorption concentration. C-80-2-aminothiazole, a new sorbent synthesized at the Research Institute of Polymers, was used to detect these ions in the drinking water. With regards to the chosen optimal conditions, drinking water samples were analyzed via their direct spraying in the air-acetylene flame. The prior sorption concentration determined drinking water zinc and lead ions in the concentrations equal to or less than their permissible dose concentrations. The studies indicated that the used methods to determine the trace quantities of metals in the drinking water and aqueous solutions show a high sensitivity, rapidity, simplicity of sample preparation.

[The effect of positive end-expiratory pressure on respiratory biomechanics in bronchial asthma]. / Vliianie polozhitel'nogo davleniia v kontse vykhoda na biomekhaniku dykhaniia pri bronkhial'noi astme.

The influence of PEEP breathing has been studied in 43 patients with exacerbation of bronchial asthma (BA) during 20 min in resistance of 5, 7 or 9 sm. Sputum expectoration and inspiration were found improved after PEEP breathing. Moreover, in some patients mild BA attacks relieved. Lung hyperinflation, bronchial obstruction reduced. A positive effect was observed in moderate asthma in PEEP breathing of 7 and 9 sm more frequently. This, PEEP breathing can be applied in the treatment of BA.