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Документ The Professor G. De-Metz's Contribution to the Development of Physical Science in Ukraine(Інститут теоретичної фізики ім. М. М. Боголюбова НАН України, 2021) Gutnyk, Maryna; Tverytnykova, ElenaThe contribution of Professor Georgy De-Metz to the development of physical science in Ukraine is highlighted. The information about the childhood of the future scientist is given and his formation as a scientist is shown. He was extensively involved in physics under the guidance of F. Shvedov and M. Umov. The head of his master’s thesis was Professor A. Kundt. After the publication of the discovery of X-rays by Roentgen, G. De-Metz not only repeated the experiments of the German colleague, but also put new ones. In particular, he investigated the influence of various physical factors on obtaining the clear photographs of this radiation. The scientist managed to make clear pictures of frogs with an image of the internal organs. He also explored the possibility of using X-rays in medicine. In the early twentieth century, he published his first major work on radioactivity “Doctrine of the radioactivity and radioactive substances”, in which the scientist described the physical basics of radioactivity in detail. The researcher examined the radium content in water and flora from the pond of the Kyiv Botanical garden. Using the results of the studies G. De-Metz concluded that some types of living tissue were able to absorb and even concentrate radium from water and the environment. In his work "Radioactivity and the structure of matter", not only a historical review of the development of the doctrine of radioactivity was made, but also the new experimental works of the author were represented. He analyzed 68 various minerals of uranium. G. De-Metz described the picture of the geographical distribution of radioactive minerals and identified the richest deposits of uranium ore at that time. In addition to his scientific work, the scientist was a well-known methodist. It was he who, in the 1920s, developed a method of teaching physics in institutes of Ukraine. It is reported that the scientist in a different period of time was the head of the physical department at various institutions of higher education. Moreover, he was even the Rector of the St. Volodymyr University, Kyiv Polytechnic Institute, and Kuban University.Документ Professors of the Kharkiv Technological Institute: unknown pages of biography(Державний університет інфраструктури та технологій, 2020) Tverytnykova, Elena; Gutnyk, Maryna; Salata, HalynaThe purpose of the study is to conduct a comprehensive historical and scientific analysis of the life and scientific and organizational activities of professors of the Kharkiv Technological Institute Oleksii Khinkulov and Pavlo Dedusenko, using the study of scientific literature and involved archival materials. On the basis of the involvement of unknown and little-known archival documents, a historical reconstruction of the creative activity of scientists was conducted; in particular, the little-known period of their life in 1940-1946 was studied in detail. A comprehensive analysis of the scientific activities of Oleksii Khinkulov was carried out, his contribution to the formation of the electrical industry was determined. His role in the development of scientific research in the field of radio engineering in Ukraine was emphasized. He headed one of the largest radio engineering club in Ukraine. The social activities of Oleksii Khinkulov were investigated, it was found that for a long time he worked as deputy chairman, and then as chairman of the All-Ukrainian Association of Engineers, which united the teams of research departments of technical institutions of Ukraine. The scientific and organizational activities of Professor Oleksii Khinkulov certainly contributed to the development of electrical engineering science and education both in Kharkov and in Ukraine. He was one of the organizers and promoters of the radio engineering direction in Ukraine, participated in the work of public organizations and electrical congresses. His colleague at KhTI, Professor of chemistry Pavlo Dedusenko, is undoubtedly an outstanding person. As an active member of various charities, he worked hard for the public. These are both scientific societies and various social projects. A supporter of Ukrainian nationalism, he strove for the Independence of Ukraine, the development of Ukrainian culture. Repressed in 1945, the scientist died in the concentration camp in 1946. In 1991, due to the lack of evidence confirming the guilt of Pavlo Dedusenko, the professor was rehabilitated.