Small mammals in the upper belts of the Ural Mountains

Distribution of rodents in the upper belts of the Ural mountains In comparison with that in the lower belts and the adjacent plains Is reviewed based on the many year data obtained by the authors and taken from the literature.[es] Se revisa la distribución de los roedores en los pisos superiores de los Urales en comparación con la de los cinturones Inferiores y las llanuras adyacentes. Los resultados se basan en los datos obtenidos por los autores después de muchos años y en la información que aporta la bibliografía. [fr] On revoit la distribution des rongeurs dans les étages supérieurs des monts Ourals en comparaison avec la distribution dans les étages inférieurs et les plaines adjacentes. Les résultats se sont appuyés dans les données obtenus par les auteurs après de beaucoup d'années de travail et dans l'information qu'apporte la bibliographie

Problems of Organizing Critical Thinking Training for University Students

The paper aims to determine the factors that hinder forming and developing critical thinking of students and ways to overcome them in higher education. First, it is a problem of low motivation and a low level of self-regulation in critical thinking training. These problems reduce the effectiveness of all those methods and techniques for forming critical thinking that teachers use. We propose applying differentiated learning (multilevel learning) as one of the most effective ways to solve the problem of organizing critical thinking training. Moreover, we consider that at the beginning of training, it is necessary to determine the personal qualities of students, such as purposefulness, self-discipline, perseverance, tolerance, academic motivation, and self-regulation of cognitive activity. During the learning process, it is necessary to use multilevel tasks and exercises to cover all categories of students. This is because these tasks are based on some volitional qualities of the personality and motivation for learning. This approach is systemic and makes it possible to achieve high efficiency in teaching critical thinking

Site-selection on the basis of territorial analysis methods

The object of research is the site-selection process for the rental housing construction. This form of real estate is becoming more widespread in the west, while in Russia it's development is currently on initial stage. The article proposes the site-selection solution on the basis of existing methods of territorial analysis, calculation of employment shares, location quotients, Hirschmann-Herfindahl index and Kano model application, as well as application examples of the obtained databases in the conditions of a narrowly formulated problem. The research results are the mechanisms for solving three types of problems depending on the nature of the initial data according to correspondence between the properties of the object under construction and the urban territories

Features of carnitine metabolism in young athletes

Objective: to study the indicators of carnitine metabolism in young athletes of various specializations.Materials and methods: This study involved 46 people with different levels of physical activity aged 15 to 18 years. The first group consisted of 18 girls professionally involved in field hockey (mean age, 16.17 ± 0.31 years). The second group included 21 swimmers (10 girls and 11 boys, mean age 17.00 ± 0.26 years). The control group included 7 young men with a standard mode of motor activity, not involved in sports (the age of the subjects was 16 years). In the course of the study, the method of liquid tandem chromatography-mass spectrometry with ionization in an electrospray was used. The material for research is capillary blood. As a result of the analysis of the material, the concentrations of bound carnitine (acylcarnitines) and free carnitine were determined in µmol/l.Results: Comparative blood analysis between the three groups showed differences in free carnitine levels. It was shown that the concentration of free carnitine in the blood plasma of field hockey athletes was significantly lower than in the groups of swimmers and non-athletes (p < 0.001). At the same time, the values of indicators of bound carnitine did not differ significantly between all subjects. We also studied that the values of the carnitine coefficient were significantly higher in the group of hockey players compared to other groups (p < 0.001).Conclusion: The decrease in free carnitine levels in the group of hockey players is probably the result of long-term adaptation of the body to conditions in which glucose is the main energy substrate for working muscles. Further studies are needed to clarify the exact mechanisms of development of this phenomenon

Fluoride technology of obtaining REM magnetic alloys and master alloys

Rare earth permanent magnets (REPM) based on neodymium-Fe-boron system are the most promising, since they have the highest magnetic and satisfactory mechanical characteristics. The paper covers physical-chemical principles and shows the results of experimental studies of the process of obtaining REM alloys and master alloys using fundamentally new fluoride technology based on ladle calciothermal REM fluorides and Fe reduction