Features of the reproductive history and health status of elderly women in the mountains districts of the Republic of Dagestan

The last years were marked by a growing interest in the problems of people of the elderly age. The reason for this was the phenomenon of the aging of the world’s population. In implementing the concept of «healthy or the benefits of aging», considered by UN experts as one of the main directions of the «Program of Scientific Research work of the problems of Aging in the 21st Century», great importance is attached to changing a person’s life (refuse of bad habits, the time of beginning of sexual activity, dietary habits and others), which can prove to be very effective not only in increasing life expectancy, but also in improving its quality. For medical care. This article provides information about the health condition of elderly women in the foothill areas of Dagestan, using the example of the Akushinsky district for identifying priorities for older women and developing proposals for executive bodies, which was the purpose of this study.Последние годы ознаменовались усилением интереса к проблемам людей пожилого и старческого возраста. Причиной этого явилось явление постарения населения земного шара. [6,2] В реализации концепции «здорового или благополучного старения», рассматриваемой экспертами ООН как одно из основных направлений «Программы научных исследований по проблемам старения в XXI веке», важное значение придается изменению стиля жизни человека (отказу от вредных привычек, времени начала половой жизни, диетических привычек и др.), что может оказаться весьма эффективным не только в увеличении продолжительности жизни, но и повышении ее качества. В данной статье представлена информация о состоянии здоровья пожилых женщин горных районов Дагестана на примере с Акушинского района для выявления приоритетов медицинской помощи пожилым женщинам и разработки предложений для органов исполнительной власти, что и являлось целью настоящего исследования

Development of singularities for the compressible Euler equations with external force in several dimensions

We consider solutions to the Euler equations in the whole space from a certain class, which can be characterized, in particular, by finiteness of mass, total energy and momentum. We prove that for a large class of right-hand sides, including the viscous term, such solutions, no matter how smooth initially, develop a singularity within a finite time. We find a sufficient condition for the singularity formation, "the best sufficient condition", in the sense that one can explicitly construct a global in time smooth solution for which this condition is not satisfied "arbitrary little". Also compactly supported perturbation of nontrivial constant state is considered. We generalize the known theorem by Sideris on initial data resulting in singularities. Finally, we investigate the influence of frictional damping and rotation on the singularity formation.Comment: 23 page

Sonochemically-Produced Metal-Containing Polydopamine Nanoparticles and Their Antibacterial and Antibiofilm Activity

A facile one-pot sonochemical synthesis of Cu-, Ag-, and hybrid Cu/Ag-based polydopamine nanoparticles (Cu-, Ag-, and Cu/Ag-PDA-NPs) and the mechanisms by which they exert antibacterial and antibiofilm activities are reported. We showed that the nanoparticles are spherical with a core–shell structure. Whereas Cu is chelated to the shell of Cu-PDA-NPs in oxidation states of +1/+2, the core of Ag-PDA-NPs is filled with elemental Ag°. Sonochemical irradiation of dopamine in the presence of both Cu²⁺ and Ag⁺ generates hybrid Cu/Ag-PDA-NPs, whose shells are composed of Cu-chelated PDA with Ag° in the core. The redox potential of the metals was found to be the main determinant of the location and oxidation state of the metals. Leaching studies under physiological conditions reveal a relatively fast release of Cu ions from the shell, whereas Ag leaches very slowly from the core. The metal-containing PDA-NPs are highly microbicidal and exhibit potent antibiofilm activity. The combination of both metals in Cu/Ag-PDA-NPs is especially effective against bacteria and robust biofilms, owing to the dual bactericidal mechanisms of the metals. Most importantly, both Ag- and Cu/Ag-PDA-NPs proved to be significantly more antibacterial than commercial Ag-NPs while exhibiting lower toxicity toward NIH 3T3 mouse embryonic fibroblasts. Mechanistically, the metal-containing PDA-NPs generate stable PDA-semiquinone and reactive oxygen species under physiological conditions, which contribute at least partly to the antimicrobial activity. We also demonstrated that simple treatment of surfaces with Ag-PDA-NPs converts them to antibacterial, the activity of which was preserved even after prolonged storage under ambient conditions

Movement of the phase change front after contact is made between the solid and liquid phases of a metal

Translated from Russian (Izv. Vyssh. Uchebn. Zaved., Chern. Metall. 1986 (9) p. 35-38)SIGLEAvailable from British Library Document Supply Centre- DSC:5828.4(M--37128)T / BLDSC - British Library Document Supply CentreGBUnited Kingdo