Sergei Leonchuk graduated from Dostoyevsky Omsk State University in 2021, got a bachelor's degree in Chemistry. Sergei's graduation work and his scientific publications in the period from 2019 to 2021 were devoted to the study of the physicochemical causes of the formation of gallstones and the peculiarities of crystallization of calcium carbonate in the human body under the influence of various factors. Now Sergei is studying at SCAMT Institute under the program "Chemistry of Applied Materials" and doing research in nanotechnology as part of the "Nanopharmacy" group under the leadership of Vladimir Vinogradov.