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Subject of Research. The paper presents energy characteristics study of a carbon-containing composite material of a heat and power storage unit. We propose the composition and composite material technology for the heat and power storage unit. The initial components of the storage include graphite micro-powder, Na2O(SiO2)n water glass and a solidifier, Na2SiF6, sodium silicofluoride. The applicability of the developed heat and power storage unit is considered. Methods. The composition of composite material samples was studied by x-ray diffraction analysis and electron microscopy. Material characteristics were determined by thermophysical and electrophysical methods. Main Results. Samples of carbon-containing composite material are obtained. Engineering facilities of the heat and power storage unit are developed. Impedance frequency dependences of the heat electric storage unit experimental samples and their voltampere characteristics are obtained. The temperature dependences of electrical capacity and dielectric permittivity of the heat electric storage unit experimental samples are studied in the range of 20–60 °C. The temperature dependences of the specific heat capacity and the thermal conductivity coefficient for monotonous heating are obtained. Practical Relevance. The developed heat and power storage unit can be used in emergency lighting and heating systems and power supply when operating in the mode of constant or compensatory charging (private and administrative house construction). The developed material is applicable in temperature sensors.

Subject of Research. Research results of the fire-resistance for “water glass - graphite microparticles” composite material (CM) are given. The method for fire-resistance test of the micro composition is suggested in order to determine the limit state of the experimental samples under hightemperature action. Method. Test-benchequipment being used for research includes metering devices of temperature and time, as well as laboratory electric furnace PL20 with a maximum temperature in the chamber up to 1250ºC. Fire-resistance limit for the test samples of composite material is determined by the loss of insulating ability (I). For that purpose, the time is obtained from the test beginning with the standard temperature mode up to a limiting condition. Main Results. In accordance with the requirements of regulatory documents fire-resistance limit I15 has been obtained equal to 15 minutes. The qualitative and quantitative phase analysis of the CM structure has been done. By the study of samples by X-ray diffraction and electron microscopy we have determined that the material retains the same chemical structure with a monotonic heating above 700° C. Practical Relevance. The composite material with obtained characteristics can be used as a protective coating for building constructions with the aim of fire-resistance enhancement and fuel hazard reduction.

Research results for the composite material (CM) water glass–graphite microparticles with high thermal stability and thermal insulation properties are given. A composition consisting of graphite (42 % by weight), water glass Na2O(SiO2)n (50% by weight) and the hardener - sodium silicofluoric Na2SiF6 (8% by weight). Technology of such composition receipt is suggested. Experimental samples of the CM with filler particles (graphite) and a few microns in size were obtained. This is confirmed by a study of samples by X-ray diffraction and electron microscopy. The qualitative and quantitative phase analysis of the CM structure is done. Load limit values leading to the destruction of CM are identified. The character of the rupture surface is detected. Numerical values of specific heat and thermal conductivity are defined. Dependence of the specific heat capacity and thermal conductivity on temperature at monotonic heating is obtained experimentally. Studies have confirmed the increased thermal insulation properties of the proposed composition. CM with such characteristics can be recommended as a coating designed to reduce heat losses and resistant to high temperatures. Due to accessibility and low cost of its components the proposed material can be produced on an industrial scale.

Educational migration plays an important role in the implementation of admission plans for applicants to higher education institutions in a significant number of Russian regions. The aim of the work is to find out which regions are the most attractive for graduates in terms of higher education on the basis of the study of interregional migration of university entrants, as well as to identify the factors influencing the educational attractiveness of the regions. The research methodology is based on the statistical approach, which allows us to use publicly available data from official statistics. The information base of the study was the data of the federal statistical observation forms No. VPO-1, No. OO-1, as well as other official statistical data of the Federal State Statistics Service. The methods of the study included methods of comparative analysis and descriptive statistics, methods of data mining, such as analysis of key factors of influence and clustering. The main indicator of educational migration was selected as a statistical indicator – the share of students from the total enrollment who received a previous education in another subject of the Russian Federation. The analysis revealed ten factors that have the greatest influence on the indicator of educational migration. The clustering of 83 regions according to the space of selected characteristics resulted in five clusters with different values of the indicator of educational migration and different values of indicators of the quality of life. Three territorially different educational centers of gravity were identified: “Metropolitan”, “Southern” and “Siberian”, which include 27 regions of Russia from the two best clusters by the indicator of educational migration. The regions of the Arctic zone of the Northwestern Federal District and the Far East enjoy the least educational popularity. The trend has been revealed, which is a decrease in the value of the indicator of educational migration of most regions as they move away from the “metropolitan” educational center. The results of the study can be useful to the executive authorities of the regions when solving the tasks in the sphere of educational migration flows management.