Comparative Analysis of the Physical and Chemical Properties of Uzbekistan's Basalts and Ways of Solutions to the Problems of Choice of Raw Processing Directions

This article highlights the common use of petrographic processes in basalt processing. At present, basalt is being processed by liquefaction only. Heat fibers, tiles, cement, fittings, and nets are taken from the basalt. For this reason this article states that the range of products to be purchased is small. And to increase the assortment, it is proved by the fact that basalt basin should not be confined to liquefied processing. Chemical composition of basalt. Depending on the chemical composition of the basalt, the technology of their processing is selected and determined. The article is based on the same principle that the dry method of drying basalt without liquefaction is put forward. Below are the names of products that can be obtained on dry bases processing. This is justified by the fact that it increases the range of basalt products. However, it is advisable to follow two methods of basalt processing in the future. These methods, which are recommended by the authors, have undergone a production trial and received positive assessments; the test report has also been presented

Heat Processing and Change of Proper Indicators of Basalts

This paper presents the results of the analysis of the quality of basalts, their heat treatment and studies of changes in the chemical composition of basalts, which leads to a change in the external color of partially processed basalt raw materials (hereinafter referred to as semi-finished product). The results of a study of purified basalt from slime, impurities and hydroxides, changes in the chemical composition of basalt rock are presented. The prospects of heat treatment of a semi-finished product and obtaining multi-colored products from mineral raw materials is shown. It was found that the optimal firing temperature of the semi-finished product, the possible options for changing the external color and the criterion points of the thermal effect at which the basalt semi-finished product changes the external shade. These statements are of great scientific and practical interest in the fact that during the heat treatment of a semifinished product, basalt easily overheats and gradually acquires a different color, which occurs to a liquids temperature and allows the future to plan to obtain high-quality multi-colored products from basalts, for example, products for design

Clinical-epidemiological and pathogenetic features of viral hepatitis C in the hemodialysis departments

Background. Today, the programmed hemodialysis belongs to the clinical medicine area where patients are at a constant risk of viral hepatitis infection. This is associated with surgical interventions on the vessels, fairly frequent transfusions of blood components, and regular hemodialysis procedures. But in recent years, the ratio of reported cases of viral hepatitis B and C in patients on programmed hemodialysis has changed significantly. With an abrupt increase in the incidence of viral hepatitis C, there is a decrease in the number of registered viral hepatitis B cases.The aim. To study the clinical, epidemiological and pathogenetic features of viral hepatitis C in hemodialysis units.Material and methods. A multicenter study was conducted that enrolled the patients from the Programmed Hemodialysis Units in Tashkent and the regional departments of the Republic of Uzbekistan. The study involved 395 patients on programmed hemodialysis for 7.5 ± 0.7 years. The age of patients was 43.5 ± 0.91 years. The diagnosis of chronic viral hepatitis C was made on the basis of medical history, clinical and laboratory data, and detection of anti-HCV IgG and RNA-HCV in blood.Results. When analyzing the clinical examination and laboratory test results of 395 patients, the parenteral viral infection markers were detected in 181 patients (45.8%). The analysis of the overall incidence of viral hepatitis showed that chronic viral hepatitis C had the highest rates and was found in 125 patients (31.6%). The analysis of the chronic viral hepatitis C course in the presence of the end-stage chronic renal disease showed that in 11 (34%) of 32 patients of the Main group the disease proceeded as a fulminant form of chronic renal-hepatic failure with the development of adverse outcomes. Twenty seven patients (84%) in this group developed progressive anemia. In 16 patients (50%), persistent polyserositis developed in the form of hydrothorax, ascites, and pericarditis, which reflected the aggravating effect of chronic viral hepatitis C on the course of chronic renal disease.Conclusions. In Hemodialysis Units, both in the city of Tashkent, and in the regional departments of the Republic of Uzbekistan, the incidence of chronic viral hepatitis C prevails, having the form of a pathological process with a minimally low activity. Chronic viral hepatitis C has an aggravating effect on the course of the underlying disease with the development of adverse outcomes