375 SRETENSKII 



taught at the Dnepropetrovsk Polytechnical Institute and from 

 1921 to 1923 at the Dnepropetrovsk Mining Institute. In 1933 he 

 became a professor at the Moscow Mining Institute. Since 

 1949, he has been working at the Moscow Mining Institute of 

 the U.S.S.R. Academy of Sciences. He became a member of the 

 Communist Party of the Soviet Union in 1941. He was elected, 

 in 1946, a Corresponding Member of the U.S.S.R. Academy of 

 Sciences. He was awarded a Stalin Prize in 1947. 



Spivakovskii has worked in mining transportation. Together 

 with others he participated in improving scraper conveyers 

 and methods of transporting coal in long drifts in the mines of 

 the Donbas (Stalin Prize 1947). 

 Bibliography: 



Conveyer Units (4 parts, 1933-35). 



Conveyers (Transport Machines of Continuous Action). 



Moscow-Leningrad: 1941. 



Mining Transport, 1949. (Translated into Chinese, Czech, 



Bulgarian, Hungarian and Rumanian.) 



and N. F. Rudenko. Lifting and Transport Machines. Gener- 

 al Course. Moscow: 1949. 



Cable Conveyers. Moscow: 1951. 

 Office: Moscow Mining Institute of USSR Academy of 



Sciences 

 Moscow, USSR 

 Residence: Kutuzovskii Prospekt, 27 



Moscow, USSR 

 Telephone: G9 36 72 



SRETENSKII, LEONID NIKOLAEVICH (Mathematician) 



L. N. Sretenskii was born February 27, 1902. In 1923 he 

 graduated from Moscow University where he became a pro- 

 fessor in 1934. In 1936, he was granted the degree of Doctor of 

 Physico -Mathematical Sciences. From 1931 to 1941, he worked 

 at the Central Aero-Hydrodynamics Institute. In 1951, he start- 

 ed to work at the U.S.S.R. Academy of Sciences Marine Hydro- 

 physical Institute. He was elected, in 1939, a Corresponding 

 Member of the U.S.S.R. Academy of Sciences. 



The main works of Sretenskii deal with the theory of liquid 

 wave movements, the tidal waves, waves of terminal amplitude, 

 ship waves, and oscillation of liquid in containers. He has in- 

 vestigated the theory of figures of equilibrium of a rotating 

 liquid, streamlining by gas flow, the movement of a heavy solid 

 body around a fixed point, specific equations of mathematical 



