RYAZANSKII 318 



Office: Institute of Geology, Siberian Branch of USSR 



Academy of Sciences 

 Yakutsk, Siberia 



RYAZANSKII, MIKHAIL SERGEEVICH (Radio Engineer) 



M. S. Ryazanskii was born in 1909. He graduated from the 

 Moscow Power Institute in 1935. A recipient of the Stalin Prize 

 in 1943, he became a member of the Communist Party in 1940. 

 In 1958, he was elected to the U.S.S.R. Academy of Sciences as 

 a Corresponding Member. 

 Office: USSR Academy of Sciences 



Leninskii Prospekt, 14 



Moscow, USSR 



RYKALIN, NIKOLAI NIKOLAEVICH (Metallurgist) 



N. N. Rykalin was born September 27, 1903. He graduated 

 from the Far East University in Vladivostok in 1929. From 

 1930 to 1937, he taught at the Far East Polytechnical Institute 

 and from 1936 to 1953, at the Moscow Technological College 

 where he became a professor in 1946. In 1943-1948, he taught 

 at the Moscow Institute of Construction Engineers. He was 

 elected, in 1953, to the U.S.S.R. Academy of Sciences as a 

 Corresponding Member. 



In 1936-39, Rykalin worked at the Central Scientific Re- 

 search Institute of Industrial Construction in Moscow, and in 

 1939-53, at the Institute of Machines and in the Section on the 

 Scientific Development of Problems of Electric Welding and 

 Electrothermics of the U.S.S.R. Academy of Sciences. From 

 1953 he has been working at the Institute of Metallurgy at the 

 U.S.S.R. Academy of Sciences. 



The scientific works of Rykalin are devoted to developing of 

 theory and methods of calculating thermal processes in weld- 

 ing. 



In 1961, Rykalin was Chairman of the National Committee of 

 U.S.S.R. for Welding. 

 Bibliography: 



Thermal Basis of Welding. Moscow- Leningrad: 1947. 



Calculation of Thermic Processes During Welding. Moscow: 



1951. 



Development of the theory of heat distribution during welding 



in conformity with the distributed sources. Heat Processes 



During Welding, Moscow, 1953, 10-58, 89-111, 140-63. 



