The heat capacities of ternary TlInS2 and TlInSe2 layer crystals are studied a t low temperatures. The dependence of the characteristic temperatures θD on the temperature of these crystals is plotted. It is shown that the low‐temperature part of the heat capacities of TlInS2 and TlInSe2 depends on the temperature according to a linear law in the region of 8 to 30 K. A number of anomalies are revealed in the Cp(T) heat capacity behaviour of TlInSe2 crystals in the range from 170 to 215 K. The results obtained show the presence of phase transitions a t Tc = 173.4 K, Tic = 196.9 K, and Ti1 = 214.9 K. It is suggested that in the 196.9 to 214.9 K region the existence of a temperature sequence of long‐periodic commensurable phases is possible.

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Introduction. The article outlines transformations in Uzbekistan’s economy during the Great Patriotic War, the emergence of problems related to personnel as a result of these changes, the main causes of the lack of staff, and measures to prevent this shortage and their effectiveness. The given study analyzed the organizational problems of providing the economy with employees, analyzed measures taken during the Great Patriotic War to meet the demands of the country’s economy for personnel, and obtained new data dealing with the social status of human resources. Methods and Materials. A wide range of archival sources from the funds of the National Archive of Uzbekistan that weren’t published earlier was used in the preparation of the article. The methodological basis of the research is the principle of historicism. In the course of the study, historicalcomparative and statistical methods were applied. Analysis. The research conducted identified factors related to productivity and social issues. In particular, the labor productivity of the new staff (mainly women and adolescents) replacing qualified personnel who went to the war front has been analyzed; on the other hand, the impact of the working process on their social lives has been considered. During the war years, the involvement of women and children in production in the republic and their relationship with the evacuated population resulted in significant positive trends in society. Results. In general, by studying the impact of changes in Uzbekistan’s economy on personnel issues during the Great Patriotic War, valuable information about various sectors of the Republic’s economy during the war years as well as the advances and defects in different economic branches was obtained. Authors’ contribution. Kh.B. Babadjanov and A.K. Abdullayev jointly studied archival materials and scientific literature and drew conclusions on the topic. Kh.B. Babadjanov analyzed the documents of the National Archive of Uzbekistan, which made it possible to explore the peculiarities of the transformation of the economy of Uzbekistan during the Great Patriotic War and the supply of it with personnel. A.K. Abdullayev participated in the analysis of statistical and economic data.

A description is given of the installation which was constructed at an altitude of 3 200 m for the study of nuclear interactions at energies of 1012–1013 eV. The apparatus, which has an effective area of 10 m2, includes an ionization calorimeter and a Cerenkov total absorption spectrometer for the measurement of the energies of the primary particles, a μ-meson detector consisting of Cerenkov counters and spark chambers, and also a spark chamber for the study of the angular distribution of secondary particles.