THE INFINITE SAGA OF SUNLIGHT'S NEVER-ENDING “WE ARE CLOSING”

The article is devoted to Sunlight chain which once revolutionized the jewelry market by selling diamond pendants for several thousand rubles and distributing jewelry at grocery store checkouts. But the company went too far with marketing experiments: due to advertising about “sales for free” and the liquidation of the network, which has not been happening for many years, the company has become an Internet meme. The emergence of an accessible Internet, the development of social networks and the tightening of competition today forces various companies to resort to rather radical ways of “fighting” for an audience. In the article the advantages and disadvantages of disinformation PR technique are considered on the example of Sunlight's intentional launching of deliberately fake news into the information field

Ways to improve physical and thermal performance of refractory lining materials

Refractory lining materials, which include ceramic refractories and nonfired heat-resistant concretes, have a very short lifespan during the turnaround time measured in years and sometimes months. Therefore, increasing the service life of thermal generating units by 1.5-2 times will bring significant economic benefits. The main factor that determines the durability of refractory lining materials is the thermal resistance. It is possible to increase the thermal resistance by improving such physical and mechanical properties as strength and density. As for the ceramic refractory performance improvement, such technological methods as their structural and chemical modification by phosphate binder impregnation, as well as introduction of phosphate components into the ceramic batches during the molding process increase, in particular, their thermal stability. The use of aluminous and high-alumina cements contributes to a significant increase of not only strength, but also physical and thermal performance of heat-resistant concretes with different fillers. Switching to the use of chemical binders in the compositions of heat-resistant concretes (liquid glass with effective hardeners; silicate-block and phosphate binders) enables to develop high-heat resistant materials which do not soften in a wide range of heating temperatures from 400 °С to 1600 °С. The positive results on increasing the thermal resistance of heat-resistant composites can be obtained by reinforcing them with high temperature fibers

Ways to improve physical and thermal performance of refractory lining materials

Refractory lining materials, which include ceramic refractories and nonfired heat-resistant concretes, have a very short lifespan during the turnaround time measured in years and sometimes months. Therefore, increasing the service life of thermal generating units by 1.5-2 times will bring significant economic benefits. The main factor that determines the durability of refractory lining materials is the thermal resistance. It is possible to increase the thermal resistance by improving such physical and mechanical properties as strength and density. As for the ceramic refractory performance improvement, such technological methods as their structural and chemical modification by phosphate binder impregnation, as well as introduction of phosphate components into the ceramic batches during the molding process increase, in particular, their thermal stability. The use of aluminous and high-alumina cements contributes to a significant increase of not only strength, but also physical and thermal performance of heat-resistant concretes with different fillers. Switching to the use of chemical binders in the compositions of heat-resistant concretes (liquid glass with effective hardeners; silicate-block and phosphate binders) enables to develop high-heat resistant materials which do not soften in a wide range of heating temperatures from 400 °С to 1600 °С. The positive results on increasing the thermal resistance of heat-resistant composites can be obtained by reinforcing them with high temperature fibers

Assessment of cardiovascular pathology risk in miners employed at deep chrome mines

Deep mining is widely spread in Russia; therefore, preservation of labor resources employed in the sphere is a vital task. Workers who are employed at deep chrome mines are exposed to combined effects exerted by adverse occupational factors. These factors can either be common for deep mining, or they can be related to specific natural resources. Adverse risk factors cause higher risks that not only occupational, but also production-related diseases can emerge in miners. The authors performed a complex hygienic assessment of working conditions which exist in deep chrome mines. We detected that working conditions in mines could be characterized as "hazardous" and they belonged to 3–4 hazard category due to combined negative effects exerted by physical and chemical factors of the labor process. We also performed clinical and functional examination of 135 workers employed at a chrome mine. Our focus group was made up of 88 miners; the reference group included 47 workers employed at this mine who weren't exposed to adverse factors related to chrome ores mining. All the examined workers were males, aged 30–49, with their working experience ranging from 10 to 25 years. We revealed a failure in functional activity of the endothelium in half of miners whose working experience was shorter than 10 years; and relative risk of such failure was almost 8 times higher than for workers who didn't deal with deep chrome mining. 10 % miners who had been working at the mine for more than 10 years had a substantial decrease in functional reserves of their cardio-respiratory system. Relative risk of atherosclerotic changes in vascular walls, morphological changes in the cardiac muscle and the valve apparatus was from 3.5 to 12 times higher for miners than for workers who didn't deal with deep chrome mining. We detected a direct correlation between a decrease in functional activity of the endothelium and adaptation reserves of the cardio-respiratory system and increased chrome contents in miners' blood. Periodical medical examinations of workers should include functional and morphologic research performed on the cardiovascular system as it will help to reduce morbidity with cardiovascular-pathology among miners employed at deep chrome mines and to properly implement an overall set of preventive measures

Insurance of professional responsibility at medical aid rendering

The article discusses the necessity of adoption of professional responsibility insurance act into the public health service. It is considered as the basic mechanism of compensation in case of damage to a patient at medical aid renderin

Marginalization of health institute professional groups: societal approach

The process of institutionalization of healthcare, which is considered as one of the basic social institutions, is realized in qualitative changes in its structure. The authors note that changes in the social structure, the social differentiation increasing, crisis and dysfunctional processes in the healthcare institution in modern Russia have led to a change in status, social mobility descending and marginalization of the social and professional groups of the healthcare institute. In the authors' opinion the process of marginalization of the social and professional groups of the healthcare institute is explained by the «concept of status inconsistency» proposed by G. Lensky.</p

Buccal Micronucleus Cytome Assay for the Evaluation of Cytogenetic Status of Healthcare Professionals Contacting with Anti-Cancer Drugs

Abstract: Healthcare professionals of chemotherapy departments are in a regular contact with anticancer drugs that have genotoxic properties. The analysis of the cytogenetic status of healthcare professionals (54 individuals) was for the first time carried out using a new promising noninvasive method, buccal micronucleus cytome assay with the calculation of integral indices. The effect was estimated with different duration of exposure to chemotherapy drugs (after an employee’s vacation, one month after vacation, and before vacation). Statistically significant increases in almost all studied indices of cytogenetic damages, proliferation, and apoptosis as compared with the control group of office staff (47 individuals) were detected. Among healthcare professionals, an increase in the portion of individuals with an increased level of cytogenetic abnormalities with the maximum exposure duration from 24 to 38% (11% in the control) was established. Among cancer patients (9 individuals), the portion of individuals with a high level of cytogenetic abnormalities was 56% before the next course of chemotherapy and 87% after it. © 2022, Pleiades Publishing, Inc