265 NIKOLAYEV 



Academy of Sciences. He started working in 1934 at the Insti- 

 tute of General and Inorganic Chemistry of the U.S.S.R. Acade- 

 my of Sciences. In 1936-41 he taught at the Moscow Poly- 

 graphic Institute and in 1945-57 at the Moscow Institute of 

 Non- Ferrous Metals and Gold, where he was made professor 

 in 1946. In 1957 Nikolaev became Director of the Institute of 

 Inorganic Chemistry of the Siberian branch of the U.S.S.R. 

 Academy of Sciences. He was elected in 1958 a Corresponding 

 Member of the U.S.S.R. Academy of Sciences. In 1947 he was 

 awarded the V. I. Vernadskii Prize for his research summa- 

 rized in the monograph *' Phy si co- Chemical Study of the Natural 

 Borates." 



Nikolayev's main work deals with physico-chemical analysis 

 of salt systems for the purpose of elucidating the formation of 

 natural salt and its industrial processing, thermal analysis, 

 radiochemistry. He developed thermal analysis of complex 

 compounds of platinum, investigated the chemistry and sepa- 

 ration of rare-earth elements, and studied the extraction of 

 inorganic substances by organic solvents. 



As of 1961, Nikolayev was a Member of the Presidium of the 

 Siberian Branch U.S.S.R. Academy of Sciences. 

 Bibliography: 



Pre-Irtysh Salt Region. Part I. Leningrad: 1931. 

 Kolundinsk Salt Lakes and Methods of Processing. Novosi- 

 birsk: 1935. 



and others . Thermography. Curves of Heating and Cooling. 

 Moscow-Leningrad: 1944. 



Protective films on salts and their utilization. Akad. Nauk 

 S.S.S.R., 1944, #4-5, 57-65. 



Physico-Chemical Study of the Natural Borates. Moscow: 

 1947. 



Characteristics of heterogeneous equilibria in the ex- 

 traction of inorganic substances. Izvest. Sibir. Otdel. Akad. 

 Nauk S.S.S.R., #4, 51-63 (1960). C. A. 54, 22128d (1960). 

 and A. G. Kurnakova . Extraction of boric acid. Bor. Trudy 

 Konf. Khim. Bora i Ego Soedinenii, 157-61 (1955). (Pub. 

 1956). C. A. 54, 25615d (1960). 



and A. G. Kurnakova, Z. G. Rumyantseva. The chemistry 

 of protactinium. Zhur. Neorg. Khim. 4, 1682-6 (1959). 

 C. A. 54, 8394b (1960). 



and S. M. Shubina . Isotope exchange of tributyl phosphate 

 with tagged phosphoric acid. Zhur. Neorg. Khim. _4^ 956-8 

 (1959). C. A. 54, 8397h (1960). 



