powder

Development of the powder composition with thiosulfonate component and study of its antimicrobial effect

The paper presents the results of research on the development of a potential drug that consists of S-ethyl ester of 4-acetylaminobenzene sulfonic acid and excipients in the powder dosage form for topical use. The powder composition was substantiated on the basis of microbiological studies of the introduced compound and the dosage form based on it. The rational content of the compound as a biologically active substance in the powder was established. The optimal composition of excipients was selected.

Peculiarities of Phase Formation in Sol-Gel Powders of the СaО–ZrO2–Nb2O5–SiO2 System

The phase composition of xerogel powders of the CaO–ZrO2–Nb2O5–SiO2 system after heat treatment at 1273 K with different Nb2O5 content was established. The temperatures of the physical and chemical processes occurring during the powders heating were determined. It was found that the complete replacement of ZrO2 by Nb2O5 resulted in the formation of niobium-containing phases with a change in the structure of the powders.

Development of the design of multipurpose equipment for crushing plastics and obtaining powders

A substantially new in design an experimental sample of complex equipment intended for crushing of various fragile and elastic materials, in particular plastics and obtaining powders of a different dispersion was built. The equipment consists of a shock-rotary crusher, a six-polar electromagnetic separator, two types of classifiers that allows to obtain the powders with a dispersity up to 0,05 mm applying raw materials of 5÷15 mm of diameter.

Вогнегасна концентрація порошку в привибійному просторі тупикового вироблення

A method for the determination and the results of theoretical studies of concentration and time of filing extinguishing powder based on air flow coming from the vent pipe in bottom hole space deadlock output.