Issues of alcohol safety in the Vologda oblast

The article presents the destructive social processes and threats to alcohol safety. The estimation of the basic indicators of production and consumption of alcoholic beverages in the region. The study of the international experience of regulate alcohol consumption, the necessity of toughening of state regulation of turnover of alcoholic products

Ignition of typical gel-fuel at local heating

In this paper, we determined the ignition delay for a typical gel fuel by metal particles of various form. Also, determined the ignition delay times by varying the initial particle temperature

Modification of titanium implants surface by microarc oxidation in presence of polymeric solutions. The study of immune response

In the present study, we performed the in vitro evaluation of titanium samples with four types of coatings obtained by microarc oxidation (MAO): pure calcium phosphate (CaP), CaP- chitosan, CaP- hyaluronic acid, CaP - polyvinylpyrrolidone coatings. AlamarBlue test and TNFα secretion analysis (ELISA) were performed to investigate the immune response. It was shown that formation of MAO hybrid calciumphosphate coatings increases the biocompatibility of samples. Adding of polyvinylpyrrolidone and hyaluronic acid to the electrolyte solution presumably makes it possible to obtain hybrid coatings with anti-inflammatory properties

Influence of acidic characteristics of zeolites on activity and selectivity to diesel fraction of NiMo hydrocracking catalysts

In the present study, we investigated the influence of acid properties of NiMo hydrocracking catalysts on activity and selectivity to the diesel fraction. NiMo catalysts were prepared with using following acid components: ultrastable zeolite Y (UZ-Y), recrystallized zeolite Y (RMZ-Y) and nanocrystalline zeolite BEA (NCZ-BEA). Hydrocracking catalysts were tested in a down-flow, fixed bed reactor. Concentration and strength of Bronsted (BAS) and Lewis (LAS) acid sites of the zeolites were determined by infrared spectroscopy of adsorbed CO. Supports containing γ-Al2O3 and 20, 30 or 40 wt. % of UC-Y zeolite were prepared. It was shown that the higher zeolite content the higher activity and the lower selectivity to diesel fraction of the catalysts are. Testing of the catalysts prepared from different zeolites in hydrocracking showed that selectivity to diesel fraction is greatly influenced by the ratio of BAS concentration on outer surface of zeolite crystals to concentration strongest BAS on internal surface