May, 23rd, 2003 is the day of the 70-year anniversary from the date of a birth of Yurii Dmitrievich Tsvetkov, the full member of the Russian academy of science.

Yu.D.Tsvetkov is the scientist with a world name, the large expert in the field of chemical physics. His basic scientific research is related to the development of methods of chemical radiospectroscopy and on their basis, to the studies of a structure and properties of active intermediate particles and mechanisms of chemical reactions. He creates new methods of chemical radiospectroscopy to examine electron-nuclear and electron-electronic interactions of free radicals, the use of which is made in many laboratories of the world. His works describe a structure, properties, and reactions of radicals and ion-radicals that originate under the effect of radiation in various classes of compounds, specifically, polymers, acids, amino acids, and peptides, and also develop concepts on the mechanism of radiolysis of these compounds. Under Yu.D.Tsvetkov's supervision, new evidence on the structure of traps for electrons, atoms, and radicals in the irradiated matrices, structure of solvation shells for some organic radicals and on interactions of radicals and atoms with solid adsorbents have been obtained; spatial distribution of radicals and track effects in the various irradiated materials have been studied. Currently, the methods developed by him are in even more often use in the studies of structure and dynamics of complex biological objects.

Yu.D.Tsvetkov constantly conducts a great scientific-and-organizational work. Since 1993, he was the director of the Institute of chemical kinetics and combustion for 10 years, and since 1983 to 1992, he was the principal scientific secretary of the Presidium of the Siberian branch of RAS.

Yu.D.Tsvetkov is the author of more than 280 scientific works. He has prepared 16 candidates and 3 doctors of sciences.

YU.D.TSvyetkovu - 70 lyet

Yu.D.Tsvetkov's merits have been rewarded with high government awards, including the Honour Badge and Order of Friendship of people. He is the winner of the State premium of the USSR in the field of science and technology..

Presidium of the Russian academy of sciences, Branch of chemistry and material science, editorial board and edition of the «Izvyestiya Akadyemii nauk. Syeriya khimichyeskaya» magazine intimately congratulate Yury Dmitrievich Tsvetkov on the seventieth anniversary and would like to wish him a sound health, happiness, and a great creative success.