SHCHERBAKOV 338 



Shchelkin made a considerable contribution to the develop- 

 ment of gas dynamics of burning. He experimentally proved the 

 presence of a considerable influence of turbulent flow in an 

 initial mixture on flame acceleration and developed conditions 

 for the transfer of slow burning into detonation. Shchelkin in- 

 vestigated burning in a turbulent flow. He studied spin denotation 

 and the proposed theory for this phenomenon. 

 Bibliography: 



On the theory of the origin of detonation in gas mixtures in 

 pipes. Doklady Akad. Nauk S.S.S.R., 1939, 23, #7. 

 On the theory of detonation spin. Doklady Akad. Nauk 

 S.S.S.R., 1945, 47, #7. 



and Ya. B. Zel'dovich. Application of the theory of spread- 

 ing of an arbitrary explosion in some cases of ignition of 

 gases. Zhur. Eksptl. i Teoret. Fiz., 1940, 10, #5. 

 Influence of roughness of a pipe on the origin and spreading 

 of a detonation in gases. Zhur. Eksptl. i Teoret. Fiz., 1940, 

 10, #7. 



On transfer of slow burning into a detonation. Zhur. Eksptl. 

 i Teoret. Fiz., 1953, 24, #5. 



Detonation process. Vestnik Akad. Nauk #2, 12-20 (1960). 

 Office: Institute of Chemical Physics of USSR Academy of 



Sciences 

 Vorob'evskoye Shosse 2 

 Moscow, USSR 



SHCHERBAKOV^, DMITRH IVANOV^ICH (Geologist) 



D. I. Shcherbakov was born January 13, 1893. After gradu- 

 ating in 1922 from Simferopol' University, he worked in insti- 

 tutions of the U.S.S.R. Academy of Sciences. He was a student 

 of V. I. Vernadskii and A. E. Fersman, Russian geochemists. 

 He also taught at Leningrad University, beginning in 1922 and 

 from 1928 to 1932 at the Leningrad Polytechnic Institute. From 

 1939 to 1954, Shcherbakov was at the Institute of Geological Sci- 

 ences of the U.S.S.R. Academy of Sciences. In 1953 he became 

 Academic Secretary of the Department of Geological and Geo- 

 graphic Sciences of the U.S.S.R. Academy of Sciences. He was 

 elected a Corresponding Member of the U.S.S.R. Academy of 

 Sciences in 1946 and in 1953 an Academician. 



Shcherbakov' s main works are devoted to geology and geo- 

 chemistry of rare metals and radioactive elements. He par- 

 ticipated as a student in radium expeditions of the Academy of 

 Sciences (from 1914). Later he participated in the Pamir 

 Expedition (1928), in the Tadzhik-Pamir Expedition (until 



