[Biooxidation of gold-bearing sulfide ore and subsequent biological treatment of cyanidation residues].

The percolation biooxidation parameters of ore from the Bakyrchik deposit were studied. An investigation of the technological parameters (such as the concentration of leaching agents, irrigation intensity, and pauses at various stages of the leaching) revealed the optimal mode for precious metal extraction. The stages of the ore processing were biooxidation, gold extraction by cyanidation or thiosulfate leaching, and biological destruction of cyanide.

Epidemiological Aspects of Neonatal Mortality Due To Intrauterine Infection in Kazakhstan.

Background: In this study, we examined the epidemiological aspects of neonatal mortality due to intrauterine infections with regard to regional characteristics.

Methods: Consolidated report of the Ministry of Health and Social Development of the Republic of Kazakhstan on children deceased during their first 28 days of life due to intrauterine infections (P23 - congenital pneumonia, P35-39 - infectious diseases specific to the perinatal period) in the country and its regions for 2010 - 2014 was used in this investigation. Descriptive and analytical methods of medical statistics and epidemiology were used as the main method of this 5-year (2010-2014) retrospective study.