BACKGROUND Several studies have confirmed dramatic changes in skin surface parameters during the winter months. Although there are many studies supporting the positive effects of topical treatment, there are no published studies demonstrating the effects of oral supplementation in the prevention of negative skin changes during winter. The purpose of this study was to evaluate the efficacy of an...

BACKGROUND Acne is a common condition seen in up to 80% of people between 11 and 30 years of age and in up to 5% of older adults. In some patients, it can result in permanent scars that are surprisingly difficult to treat. A relatively new treatment, termed skin needling (needle dermabrasion), seems to be appropriate for the treatment of rolling scars in acne. AIM To confirm the usefulness of...

Background Skin is a complete and independent melatoninergic system. At the skin level, melatonin (Mel) acts as a relevant antioxidant and cytoprotective substance. Topical application of Mel is considered meaningful, since it can easily penetrate the stratum corneum. Exogenous Mel can be expected to represent a potent antioxidative defense system against skin aging mechanisms. Day and night cr...

Experience of operating machines shows that their quality depends on the nature contact mating parts. The irregular surface microrelief, which is due to traditional treatment methods used, arises difficulties in solving three main problems microgeometry optimization: reliable, theoretically substantiated normalization, technological support, accurate measurement and control. This determined dir...

The problem of preservation and transformation the existing dendropark natural forest in conditions urban development middle zone city is considered. park located scientific campus Siberian Branch Academy Sciences Irkutsk. territory has properties a landscape park. At same time, it actively used as walking area for sports activities. There are risks using land housing construction because surro...

Recreation is one of the anthropogenic factors negative impact on natural environment Ukrainian Carpathians and, above all, complexes national parks region. In this regard, Carpathian NPP with a developed recreational infrastructure – network tourist routes and stationary recreation areas an indicative example. Excessive load causes digression activation erosion processes routes. It was establi...

We consider the formation of forked diffraction gratings on surface a multilayer structure based chalcogenide glass semiconductors As2S3 and a-Se is. The distribution electric field components upon interference beams with different polarization states is analyzed theoretically. possibility direct holographic writing “forked” demonstrated. parameters vortex laser generated by microrelief formed ...