KOVDA 188 



Academy of Sciences. Koval'skii has been a member of the 

 Communist Party of the Soviet Union since 1949. In 1958 he 

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

 of Sciences. 



Koval'skii' s major works are in the field of kinetics and 

 chemical reaction and nuclear physics. His investigations on 

 the study of upper and lower limits of ignition constituted an 

 important experimental base for establishing the theory of 

 branching chain reactions. He studied the mechanism of a 

 number of heterogeneous catalytic reactions. In the field of 

 nuclear physics he conducted investigations on high energy 

 particles. 

 Bibliography: 



and M. L. Bogoyavlenskaya. Initiation of homogeneous re- 

 action in gas by solid catalysts. Zhur. Fiz. Khim., 1946, 20, 

 #11. 



and V. I. Gol'danskii and others. Cross sections of non- 

 elastic interaction of neutrons with energy of 120 and 380 

 million electron-volts with nuclei. Doklady Akad. Nauk 

 S.S.S.R., 1956,^06, #2. 

 Office: Institute of Chemical Kinetics and Combustion 



Novosibirsk, Siberia 



KOVDA, VIKTOR ABRAMOVICH (Soil Scientist) 



V. A. Kovda was born December 29, 1904. He graduated in 

 1927 from Kuban Agricultural Institute in Krasnodar. In 1931 

 he became a scientific worker at the Soil Institute of the 

 U.S.S.R. Academy of Sciences. He was professor at Moscow 

 University in 1939-1941 and again in 1953. He was Director of 

 the Institute of Botany and Pedology of the Uzbek branch of the 

 U.S.S.R. Academy of Sciences in 1941-1942, and in 1943-1948 

 he taught at Moscow Hydromeliorative Institute. Kovda has 

 been a member of the Communist Party of the Soviet Union 

 since 1927. In 1953 he was elected a Corresponding Member of 

 the U.S.S.R. Academy of Sciences. He was an Honored Scientist 

 of the Uzbek S.S.R. in 1943, and in 1951 he received a Stalin 

 Prize. 



Kovda' s main research interest is the study of soils of the 

 Southern regions of the U.S.S.R., the solonetz, solonchak, and 

 the soils of irrigated regions. His work elucidated the origin 

 of solonetz and solonchak soils and suggested methods of their 

 melioration. Kovda' s investigations are important in recla- 

 mation of new lands, in the construction of irrigation systems. 



