[Problems of safety regulation under radioactive waste management in Russia].

Analysis of the requirements of Federal Law N 190 "About radioactive waste management and incorporation of changes into some legislative acts of the Russian Federation", as well as normative-legislative documents actual and planned to be published related to provision of radiation protection of the workers and the public have been done. Problems of safety regulation raised due to different approaches of Rospotrebnadzor, FMBA of Russia, Rostekhnadzor and Minprirody with respect to classification and categorization of the radioactive wastes, disposal, exemption from regulatory control, etc. have been discussed in the paper.

[Obtaining of the mutant Yarrowia lipolytica strains producing citric acid from glucose].

The possibility of obtaining mutant yeasts Yarrowia lipolytica VKM Y-2373 with increased ability to synthesize citric acid from glucose by using UV irradiation and N-methyl-NT-nitro-N-nitrosoguanidine was studied. Of 1500 colonies of the Y. lipolytica treated with either UV or N-methyl-NT-nitro-N-nitrosoguanidine, three mutants were selected that displayed higher (by 23%) biosynthetic ability as compared with the initial strain.

[The individual glycolysis enzymes in the enterocytes of the rat small intestine studied during exposure to ionizing radiation].

Activity and isoenzyme composition of certain enzymes of glycolysis of rat small intestine enterocytes was studied in the course of exposure to X radiation. Hexokinase activity was shown to increase significantly throughout the entire period of observation. Activity of pyruvate kinase and lactate dehydrogenase was inhibited at early (days 1-3) and increased at later (days 5-10) times of observation.