Effect of powerful pulsed and continuous ion beams on the Al-Cu-Mg alloy structure

The paper considers the results of an electron microscopy study of the VD1 alloy of the Al-Cu-Mg system after cold working and subsequent irradiation with a powerful pulsed ion beam (70% C[+] + 30% H[+], Е=180 keV) in the pulsed-periodic mode ([tau] = 80 ns, f = 0.1 Hz, j = 200 A/cm{2}, F = 1·10{14} cm{-2}) and under the conditions of the generation of only one pulse ([tau] = 180 ns, j = 100 A/cm{2}, F = 2·10{15} cm{-2}). It is established that this irradiation noticeably affects the microstructure of the cold-worked 3 mm thick sheets of VD1 alloy. The initial cellular dislocation structure transforms into a subgrain one. The intensity of structural transformations in the alloy increases with ion current density of a pulse. A similar transformation of a dislocation structure over the entire thickness of the sample is observed under irradiation with continuous Ar{+} ion beams (Е = 20-40 keV) with not high fluences (10{15}-10{16} cm{-2})

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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