314 research outputs found

    Results of the study of the vestibular apparatus and the functions of the perception of space in cosmonauts (pre- and post-flight observations)

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    The effect of the set of space flight factors caused a change in the activity of the vestibular apparatus and the spatial perception function. More significant and longer shifts were observed during expeditions of great duration. The detected disorders (increase in reactivity of the otolithic apparatus, decrease in sensitivity of the cupula receptor, deterioration in the perception accuracy, etc.) had a definite tendency to be restored. The primary damage to the otolithic reflex (changes were found in practically all the subjects) is probably caused by the specific effect of zero gravitation, and apparently, may be one of the trigger mechanisms for discrepancy in the activity of the sensory systems, disorders in the correcting function of the cerebellum, and central vestibular formations

    Results of the investigation of the otolith function in manned space flights

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    The effects of conditions of long term and short term space flights on the otolith function of cosmonauts were investigated via pre and post examinations. The results show that after long term flight, the intensity of the otolith reflex increased and asymmetry occurred in the indicators of the otolith function. Large changes in terms of expression and duration in the indicators of the otolith function after long term flight as compared with short term flight were also noted

    A method for production of phytomineralsorbent, physical and chemical properties of it, effect on the living systems and the quality of the livestock industry products

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    Numerous experimental studies have shown that the sorption-active substances can clarify the reservoir, soils, drinking municipal water from unwanted impurities with a sufficient degree of effectiveness; eliminate the potentially toxic for health chemicals of different chemical nature from human body. This is ensuring their using in the animal production practice, veterinary medicine and medicine. The main purpose and focus of this study are associated with the solution of problems of the maintaining physiological and biochemical status of live-stock animals. It provides their productivity and biological value of obtained product

    The concept of personal identity in modern socio-philosophical discourse: theoretical and methodological aspect

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    Relevance: The article is devoted to the socio-philosophical comprehension of the personal identity problem in the Internet. The situation of our time, characterized by “fluidity,” the variability of self-images, “masks”, has a resemblance to virtual space, which allows the individual to “try on” various social roles. The problem of personal identity requires a socio-philosophical understanding in the modern world. Purpose: to reflect the modern vision of sociologists and philosophers of the concept of personal identity, to identify the main characteristics of personal identity on the Internet. Methods of research: The theoretical and methodological basis of the study is the structural and constructivist approach. This approach is based on the conception that identities are the construct of the personality itself, they can be transformed depending on the individual’s choice, while the structure of society is determined by the identities system. The main results: A modern individual can be described as an individual of mass information consumption. The study of modern socio-philosophical works of the concept of personal identity allows us to determine the following characteristics: variability associated with social context; procedural nature; structure planning; reflexivity; categorization; selection. Scientific novelty of the study lies in the author’s position, according to which the key characteristics of personal identity include: variability related to the social context; procedural nature; construction; categorization; choice. Directions for future research: in further research, the problem of personal identity in the conditions of Internet communication will be considered by us in the context of the dichotomies “private-public”, “I-Other”, which will make it possible to understand how personal identity is formed and transformed in the modern Internet

    Non-LTE abundances of zinc in different spectral type stars and the Galactic [Zn/Fe] trend based on quantum-mechanical data on inelastic processes in zinc-hydrogen collisions

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    We present a new model atom of Zn I-II based on the most up-to-date photoionisation cross-sections, electron-impact excitation rates, and rate coefficients for the Zn I + H I and Zn II + H- collisions. The latter were calculated using the multi-channel quantum asymptotic treatment based on the Born-Oppenheimer approach. Non-LTE analysis was performed for the first time for lines of Zn I and Zn II in the ultraviolet (UV) spectra of two very metal-poor reference stars, HD 84937 and HD 140283. We found consistent non-LTE abundance from the resonance Zn I 2138 A line, the subordinate lines, and the lines of Zn II. In both stars, non-LTE leads to 0.17 dex higher average abundance from Zn I, while, for Zn II lines, non-LTE corrections are minor and do not exceed 0.06 dex. Using lines of Zn I in the high-resolution spectra, we determined the non-LTE abundances for a sample of 80 stars in the -2.5 < [Fe/H] < 0.2 metallicity range. The [Zn/Fe] versus [Fe/H] diagram reveals a dip, with [Zn/Fe] = 0.3 in the most metal-poor stars, a close-to-solar value for [Fe/H] = -1.2, and increasing [Zn/Fe] up to 0.3 in the thick disk stars. The close-to-solar metallicity stars have subsolar [Zn/H] = -0.1, on average. Non-LTE abundances of zinc were derived for the first time for seven reference F to B-type stars. We provide a grid of the non-LTE abundance corrections.Comment: 15 pages, 9 figures, accepted to MNRA

    Evolution of the texture of low-carbon microalloyed pipe steel in the seamless pipe manufacturing process

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    A method of orientation microscopy (with the application of the EBSD technique) is used in investigation of the microstructure and texture in steel 0.08 % C-Cr-Mo-V formed at different stages of the seamless pipe manufacturing process, namely, after hot finishing and after full quenching with subsequent high-temperature tempering. It is shown that, at the final stage of hot finishing followed by heat treatment, the texture is represented by four scattered orientations. The found texture inheritance in the investigated material is presumably related to reproduction of special circa Σ3 boundaries between crystal grains at each phase transition. © 2016 Author(s)

    Influence of L-lysine sulfate on containing of vitamins and minerals in the body of broiler chickens

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    Experimental researches have shownthatthe L-lysine sulfate (the product of microbiological synthesis) has a positive effect on metabolism of vitamins A, E, C in the liver and minerals calcium and phosphorus in the blood and bones of broiler chickens. The dose of L-lysine sulfate of 800 mg-kg" 1 and 1000 mg-kg-1 weight body has influence on increasing vitamins level in the liver. Was observed, that indexes of calcium and phosphorus are increased in the blood but it’s decreased in the bones of broiler chickens. This results are necessary for Veterinary Pharmacology Consults and official practically using in agricultural sectors of Russian Federatio
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