DUKHOV 92 



Residence: 2-aya Meshchanskaya, 87 



Moscow, USSR 

 Telephone: II 39 31 



DUKHOV, NIKOLAI LEONroOVICH (Mechanical Engineer) 



N. L. Dukhov was born October 13, 1904. Upon graduating 

 from the Leningrad Polytechnical Institute in 1932, he worked 

 as a designer at the Leningrad Plant, and in 1941 at the Chelya- 

 binsk Plant. He was awarded the title Hero of Socialist Labor, 

 and became a member of the Communist Party of the Soviet 

 Union in 1941. In 1953, he was elected to the U.S.S.R. Academy 

 of Sciences as a Corresponding Member. 



The basic works of Dukhov deal with the development of new 

 designs. 



Office: USSR Academy of Sciences 



Leninskii Prospekt, 14 

 Moscow, USSR 



DUMANSKII, ANTON VLADIMIROVICH (Colloidal Chemist) 



A. V. Dumanskii was born April 20, 1880. He is one of the 

 founders of colloidal chemistry in Russia. He graduated in 

 1903 from ICiev Polytechnical Institute where, until 1913, he 

 conducted his investigations. In 1913 he organized in Voronezh 

 a Laboratory of Colloidal Chemistry which was reorganized in 

 1932 into the All-Union Scientific Research Institute of Colloidal 

 Chemistry. Until 1942 he was Director of this Institute. In 

 1946 he became Director of the Institute of General and Inor- 

 ganic Chemistry, Ukrainian S.S.R. Academy of Sciences. Du- 

 manskii has been a Corresponding Member of the U.S.S.R. 

 Academy of Sciences since 1933, and since 1945 an Academician 

 of the Ukrainian S.S.R. Academy of Sciences. He is the founder 

 and editor, since 1935, of the Colloidal Journal. 



While studying dispersed, chiefly colloidal systems, Du- 

 manskii introduced physical methods for research in colloidal 

 chemistry. He observed an increase in the concentration of 

 salts with the introduction of gelatin to their solution, which was 

 helpful subsequently in explaining the role of water, bound to 

 colloidal particles. Instead of using animal membranes for in- 

 vestigating the properties of a medium surrounding colloidal 

 particles (a dispersed medium), Dumanskii introduced, in 1908, 

 the use of collodion membranes, later widely utilized in chemis- 

 try and biology. He introduced the use of a powerful centrifuge 

 for measuring the size of colloidal particles. Dumanskii' s 

 widespread investigations in the utilization of physico-chemical 



