Protection of molybdenum containers used at uranium dioxide sintering from grain boundary diffusion of oxygen and nitrogen

The results of investigating the reasons of damaging molybdenum containers used at energy tablets sintering from uranium dioxide have been given. The influence of niobium protective coating on changing molybdenum microstructure and properties is investigated. It is shown that protective coating prevents the formation of carbide, nitride and oxide phases on the boundary of molybdenum grains increasing thereby the durabilit

Value Orientation “Patriotism”: Essence, Content, and Assessment

Background. In the modern historical period, taking into account the current military-political situation, the actualization of the idea of patriotism as a comprehensive element of spiritual integrity of people is a condition for the preservation of Russia as an independent and unified state. The analysis of Russian and foreign scientific literature as well as of regulatory legal documents has shown the absence of a unified approach to the essence and content of the value orientation “patriotism”. There was also no tool for assessing the level of value orientation “patriotism” found. Objective. The article focuses on the development of a theoretical model of the value orientation “patriotism” and a methodology for assessing the level of its formation. Sample. 1600 citizens of the Russian Federation took part in the empirical study. Methods. The study was conducted with an expert survey, focus groups and a sociological survey. Results. The ANOVA by Kraskel — Wallis showed the validity of the developed methodology for assessing the value orientation of “patriotism” and the absence of statistically significant differences when using it on different sample populations. Conclusion. The article reveals the essence and content of the value orientation “patriotism”, develops and substantiates its theoretical model, which includes 8 components, as well as means of formation and levels of manifestation. In addition, the study developed and successfully tested a methodology for assessing the level of development of the value orientation “patriotism”

Planning the properties of a coated abrasive by quality function deployment

The article presents the procedure for improving the coated abrasive quality using quality function deployment. It shows the results of the process of planning the properties of a coated abrasive based on the consideration of consumer and legislative requirements and operating conditions to achieve the competitiveness of a coated abrasive

Planning the properties of a coated abrasive by quality function deployment

The article presents the procedure for improving the coated abrasive quality using quality function deployment. It shows the results of the process of planning the properties of a coated abrasive based on the consideration of consumer and legislative requirements and operating conditions to achieve the competitiveness of a coated abrasive

Chaperone Hsp70 (HSPA1) Is Involved in the Molecular Mechanisms of Sleep Cycle Integration

The molecular mechanisms of sleep cycle integration at the beginning and the end of the inactive period are not clear. Sleep cycles with a predominance of deep slow-wave sleep (SWS) seem to be associated with accelerated protein synthesis in the brain. The inducible Hsp70 chaperone corrects protein conformational changes and has protective properties. This research explores (1) whether the Hspa1 gene encoding Hsp70 protein activates during the daily rapid-eye-movement sleep (REMS) maximum, and (2) whether a lower daily deep SWS maximum affects the Hspa1 expression level during the subsequent REMS. Combining polysomnography in male Wistar rats, RT-qPCR, and Western blotting, we reveal a three-fold Hspa1 upregulation in the nucleus reticularis pontis oralis, which regulates REMS. Hspa1 expression increases during the daily REMS maximum, 5–7 h after the natural peak of deep SWS. Using short-term selective REMS deprivation, we demonstrate that REMS rebound after deprivation exceeds the natural daily maximum, but it is not accompanied by Hspa1 upregulation. The results suggest that a high proportion of deep SWS, usually observed after sleep onset, is a necessary condition for Hspa1 upregulation during subsequent REMS. The data obtained can inform the understanding of the molecular mechanisms integrating SWS and REMS and key biological function(s) of sleep