EXPERIENCE OF USING WEBINARS IN THE IMPLEMENTATION OF PROGRAMS OF ADDITIONAL PROFESSIONAL EDUCATION IN THE DEPARTMENT OF HYGIENE AND PROFESSIONAL DISEASES WITH A COURSE OF PHYSIOTHERAPY, THERAPEUTIC PHYSICAL TRAINING AND SPORTS MEDICINE

The article is devoted to the experience of conducting webinars for the implementation of programs of additional professional training of doctors at the Department of Hygiene and Occupational Diseases with a course of physiotherapy, exercise therapy and sports medicine of USMU. The main advantages of webinars over traditional forms of teaching are shown, among which the expansion of the geography of the contingent of students is important. The conditions for the successful application of telecommunication technologies in the educational process are given.Рассмотрен опыт проведения вебинаров для реализации программ дополнительного профессионального обучения врачей на кафедре гигиены и профессиональных болезней с курсом физиотерапии, ЛФК и спортивной медицины УГМУ. Показаны основные преимущества вебинаров перед традиционными формами преподавания, в частности расширение географии контингента слушателей. Приведены условия успешного применения телекоммуникационных технологий в образовательном процессе

Hygiene factors of the air environment and their role in the formation of cancer risk in hydrometallurgical copper production

Hygienic assessment of working conditions in modern hydrometallurgical copper production has been carried out, the assessment in formation of carcinogenic risk of the workers employed in a hydrometallurgical complex of copper-containing ores in comparison with pyrometallurgical processes has been made. It is shown that in copper mining, the main factor causing a carcinogenic risk is inorganic compounds of cadmium and lead. The greatest predictive values of carcinogenic risk for metallurgical shops professions are observed in pyrometallurgical production, rather than in hydrometallurgical production, due to the difference in the equipment used. The main measure to reduce the carcinogenic hazard in obtaining cathode copper by the hydrometallurgical method should be the introduction of effective ventilation systemsПроведена гигиеническая оценка условий труда в современном гидрометаллургическом производстве меди, дана оценка в формировании канцерогенного риска рабочих, занятых на гидрометаллургическом комплексе медьсодержащих руд, по сравнению с пирометаллургическими процессами. Показано, что при добыче меди основным фактором, формирующим канцерогенный риск, являются неорганические соединения кадмия и свинца. Наибольшие прогнозные значения канцерогенного риска для профессий металлургических цехов наблюдаются при пирометаллургическом производстве, чем при гидрометаллургическом, что обусловлено различием в используемом оборудовании. Основным мероприятием по снижению канцерогенной опасности при получении катодной меди гидрометаллургическим способом должно стать внедрение эффективных вентиляционных установо

USE OF HIGH SURFACE NANOFIBROUS MATERIALS IN MEDICINE

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Boosting hydrogen production from formic acid over Pd catalysts by deposition of N-Containing precursors on the carbon support

Formic acid is a promising liquid organic hydrogen carrier (LOHC) since it has relatively high hydrogen content (4.4 wt%), low inflammability, low toxicity and can be obtained from biomass or from CO2. The aim of the present research was the creation of efficient 1 wt% Pd catalysts supported on mesoporous graphitic carbon (Sibunit) for the hydrogen production from gas-phase formic acid. For this purpose, the carbon support was modified by pyrolysis of deposited precursors containing pyridinic nitrogen such as melamine (Mel), 2,20-bipyridine (Bpy) or 1,10-phenanthroline (Phen) at 673 K. The following activity trend of the catalysts Pd/Mel/C > Pd/C ~ Pd/Bpy/C > Pd/Phen/C was obtained. The activity of the Pd/Mel/C catalyst was by a factor of 4 higher than the activity of the Pd/C catalyst at about 373 K and the apparent activation energy was significantly lower than those for the other catalysts (32 vs. 42-46 kJ/mol). The high activity of the melamine-based samples was explained by a high dispersion of Pd nanoparticles (~2 nm, HRTEM) and their strong electron-deficient character (XPS) provided by interaction of Pd with pyridinic nitrogen species of the support. The presented results can be used for the development of supported Pd catalysts for hydrogen production from different liquid organic hydrogen carriers