Remote training of medical students: advantages and disadantages

Modern medical education, its quality requires the use of innovative transformations in training technology. The use of modern information technologies allows us to transfer the learning process to a qualitatively higher level. As a result, traditional education is reoriented to a fundamentally new level, where the student’s role changes: he becomes an active participant in the educational process

A bibliometric description of lignin applicability for the removal of chemical pollutants in effluents

Several industrial sectors produce tons of effluents daily containing a high amount of hazardous chemical pollutants that pose a major threat to the environment and human health. Current wastewater treatment methods, such as flocculation and activated carbon adsorption, have drawbacks linked to high material cost and too much energy consumption. Thus, the search for renewable, biodegradable, and efficient materials has been the object of research aimed at replacing the conventional materials used to cheapen processes and reduce environmental impacts. Lignin stands out in this context as it has low cost and high availability. Therefore, several scientific researches were developed to harness the potential of lignin, especially as adsorbent, for the removal of chemical agents from effluents. This paper presents a bibliometric review performed on the Scopus database, showing the evolution of studies related to the applicability of lignin in the removal of chemical pollutants in waters over the last five years. Data regarding annual publications, languages, journals, countries, institutions, keywords, and subjects were analyzed. The realized screening selected 130 articles that met the previously defined criteria. Results indicated a strong collaboration between countries and China's substantial contribution to the documents. The analysis also has shown that lignin is mainly used as adsorbent material, sorbent, flocculant agent, and hydrogel and presents important results and information for future researchers on this topic.The authors acknowledge financial assistance from the Brazilian research funding agencies such as CAPES (Coordination for the Improvement of Higher Education Personnel) under Finance Code 001, a Brazilian foundation within the Ministry of Education (MEC), CNPq (National Council for Scientific and Technological Development), a Brazilian foundation associated to the Ministry of Science and Technology (MCT), and FAPITEC/SE (the Foundation of Support to Research and Technological Innovation of the State of Sergipe).info:eu-repo/semantics/publishedVersio

Water desalination be baromembrane methods

For nowadays one of the most important ecological problems is the salinity of the surface and underground sources of water supply. This is due to the formation of huge amount of mineralized wastewater. In this paper scientific provisions for the increasing the efficiency of baromembrane desalination of water were developed. The effect of parameters of the processes of reverse osmosis desalination of water into the permiate yield were determined to achieve the required level of its quality. The studied methods of pre-stabilization water treatment can increase the efficiency of reverse osmosis desalination of water, as well as to increase the service life of the membrane Filmtec TW30-1812-50. The obtained results allow to develop low-waste technologies of mineralized waters desalination

Pathogenetic kardiolin in patients with coronary artery disease with concomitant patology of diabetes

The paper studied the basic pathogenic mechanisms in the development of coronary heart disease and type 2 diabetes, defined the common aspects of the etiology and clinical manifestations of similarities. The main pathophysiological characteristics and causes of coronary heart disease when accompanied by type 2 diabetes. Based on specific data pathogenesis expediency kardiolini use as auxiliary phytotherapeutic drug in patients with coronary artery disease with co-morbidities of diabetes. Also, the influence of the main components of the drug on humans. Kardiolini - complex herbal preparation, which is characterized sedation, isotropic positive and negative chronotropic effect, improve cerebral and coronary blood flow, preventing thrombosis, lowering lipids, cholesterol and triglyceride blood, that the impact on common pathogenic mechanisms of coronary heart disease and type 2 diabetes.</p

TECHNOLOGY of the Comprehensive Desalination of Wastewater From Mines

The issue of desalination is relevant for many countries of the world; the most promising technology for demineralization appears to be membrane technology. The stabilizing treatment of water before feeding it to the membrane filters involved the ion exchange softening of the solution based on the weakly acidic cation exchanger DOWEX MAC-3 in the H+ and Na+ forms. This makes it possible to improve the efficiency of baromembrane desalination and the service time of membranes. The nanofiltration membrane OPMN-P ensures the purification of low mineralized waters from sulfates (by 74–93 %) and hardness ions (67–90 %); at the same time, the membrane has low selectivity in terms of bicarbonate anions and does not retain chlorides. This avoids the accumulation of these in the concentrates at the nanofiltration purification of low mineralized waters. The inverse osmotic membrane Filmtec TW30-1812-50 shows selectivity for sulfates and hardness ions of over 99 %. The selectivity for chlorides is 83–94 % for low mineralized water, and 90–95 % for highly mineralized water. The concentrates contain hardness ions, sulfates, chlorides, and bicarbonate anions in significant concentrations. We have defined conditions for the effective softening of the formed concentrates at the comprehensive treatment by lime and aluminum coagulants. When desalinizing the concentrate of low- and highly mineralized waters, the sulfate concentration decreased to 2.55–6.53 mg-equiv./dm3 and 3.31–9.02 mg-equiv./dm3, respectively. At the same time, the concentration of hardness ions was 3.31–9.02 mg-equiv./dm3 and 4.20–10.65 mg-equiv./dm3. Creating comprehensive technologies for the purification of mineralized waters makes it possible to ensure the proper efficiency of water desalination and to utilize the waste formed with obtaining useful products. That could reduce anthropogenic pressure on the environment and solve the problem of freshwater shortage for people and industr