The report presents the history of the development of criteria for radiation and social protection of the Russian population residing in the areas contaminated with radionuclides after the Chernobyl accident, in the remote time periods after the accident. The tendencies for reduction of standards with time are shown, and their causes are analysed. It is noted that the optimization principle was not applied in the explicit form for population protection. The current radiation situation in the contaminated areas of Russia is described, and the future situation is forecast. Main pathways of external and internal population exposure are described. Modern possibilities for reduction of the population exposure dose are discussed. The authors propose promising criteria and methods for population protection and rehabilitation of contaminated areas in Russia.

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This paper presents a study of texture investigations in a cold-rolled VT-35 titanium alloy with hydrogen concentration varied within 0.04-0.55 wt. %. It is shown that the character of the rolling texture depends on hydrogen contents and is caused by changes in the mechanism of plastic deformation of the alloy. The poorly deformable alloy may be plastified by introducing small additions of hydrogen (0.06-0.12wt.%). The texture formed in this case has a relatively strong {112}-{100}(110) component and a lowintense 111 component.