Ultrafast bandgap narrowing and cohesion loss of photoexcited fused silica.

Coupling and spatial localization of energy on ultrafast timescales and particularly on the timescale of the excitation pulse in ultrashort laser irradiated dielectric materials are key elements for enabling processing precision beyond the optical limit. Transforming matter on mesoscopic scales facilitates the definition of nanoscale photonic functions in optical glasses. On these timescales, quantum interactions induced by charge non-equilibrium become the main channel for energy uptake and transfer as well as for the material structural change.

[Quality of life and physical activity among elderly and old people.].

This article presents the results of the identification of the main causes of physical inactivity among the elderly and the assessment of the effectiveness of the inclusion of regular Nordic walking into the preventive system for the elderly in order to improve the quality of life. A comparative analysis of the quality of life was used among elderly and old people, regularly engaged in Nordic walking (intervention group) and leading a physically passive lifestyle (control group). It was established that regular physical activity allows the improvement of the quality of life and positively affects health in groups under study, but it is the elderly people who represent the most physically inactive part of the population.

[Actual problems of social gerontology at the present stage of development of Russia].

The basic medico-demographic indices of aging population for Russia were identified in this article. Special attention was given to the examination of the demographic risks of a reduction in the population at the working ages, to an increase in the demographic load on the labor forces. The «Strategy for Action for the elderly persons until 2025», prepared by the Interdepartmental Working Group at the Ministry of Labour and Social Protection of the Russian Federation, was analyzed.

[Assessment of work ability index in evaluation of small peptides geroprotective effect].

We have conducted a comparative analysis of the work ability index (WAI) application in evaluation of the effectiveness of small peptides (cytogens) used as geroprotectors in the system of preventive medical nutrition of those working with occupational hazards. Our study revealed the necessity of an inclusion of small peptides into the system of preventive medical nutrition, health promotion in people working with occupational hazards and thus subjected to an accelerated aging. The combined application of peptide geroprotectors makes it possible to restore and enhance adaptive resources as well as to correct work ability and maintain health and well-being in different professional groups.