Russian Ministry of the Emergency Situations

About: Russian Ministry of the Emergency Situations is a government organization based out in Moscow, Russia. It is known for research contribution in the topics: Combustion & Liquid crystal. The organization has 218 authors who have published 172 publications receiving 453 citations. The organization is also known as: Ministry of the Russian Federation for Civil Defence, Emergencies and Elimination of Consequences of Natural Disasters.

Wear resistance of nanostructured metal-polymer self-lubricating powder composites

Abstract: Tribotechnical tests and microstructural studies were carried out. Wear mechanism of nanostructured metalpolymer self-lubricating composite materials has been established. This mechanism involves in the formation of separating polymer layers on the friction surface, which reduces the coefficient of friction and running-in period of parts of friction units. Carbon nanoparticles move along the friction surface, hinder the development of seizure processes during the interaction of microroughnesses of the contacting surfaces of the material and the counterbody during the destruction of the separating polymer layers. It was found that the polymer filler is displaced from the friction zone, carbon nanoparticles are pressed into the open areas of the surface of the copper matrix of the composite when the pressure in the tribocontact is higher than 1.5 MPa. The temperature in the tribocontact increases, the polymer filler degrades, the carbon nanoparticles are removed from the friction zone, the strength properties of the composite decrease, the friction coefficient and the wear rate increase at a sliding speed above 1.5 m/s. The obtained research results can be used in mechanical engineering, transportation industry and power engineering.

About the Impact of The Concept Of E-Government on Modern Education in Russia

Abstract: The hermeneutics of the concept of “e-government” is implemented, and the results are interpreted in the article using the method of expert survey The goal of the study was to find out the relation between the digitalization of public administration in modern Russia and higher education The conclusions on the impact of the concept of e-government on Russian education have been drawn, based on the interpretation of the experts’ answers Some conclusions from a pedagogical experiment conducted on an ongoing basis at the Academy of Civil Defense of the Ministry of the Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters since 2016 have been also provided in the article The goal of this experiment is to find out which pedagogical and information technologies are the most efficient for teaching at a university The authors are confident that the problems of the mutual influence of the e-government and modern education in Russia described in the article are inexhaustible and will be continued by them

Speed of flame propagation in CH3Cl + Cl2 mixtures during combustion initiated by continuous UV radiation

Abstract: Flame propagation in a closed tube over mixtures of chloromethane and chlorine of different compositions following ignition by continuous UV radiation is studied. It is found that the rate of combustion in all mixtures except limiting ones grows along with the propagation of the flame front up to its maximum values at nearly 1/3 the tube length and then slows. In limiting mixtures, the speed’s behavior is completely different. It is greatest near the source of UV light and gradually slows with distance from the source. The high speed in the initial section is due to the effect of UV light. The temperature of combustion is lowest in limiting mixtures, and the rate of chlorine molecule photodissociation at this temperature is comparable to and even faster than that of their thermal dissociation. The light in these mixtures thus contributes substantially to the initiation of the chemical reaction. It is concluded that when limiting mixtures are ignited by UV pulses, the speed of flame propagation falls markedly as it proceeds without the influence of radiation, and the character of changes in the speed’s behavior becomes identical to those for other mixtures.

Experimental Evaluation of the Effectiveness of the Use of Thermal Imagers in Fires Extinguishing with the Presence of Wooden Combustible Substances

Abstract: In the paper have been further development a mathematical model, that used the equation of non-stationary thermal conductivity. This model describes the thermal effect of the fire on the readings of the imager. The measurements of temperatures of external structures during fires showed the adequacy of the mathematical model with an error of up to 35%, which indicates the possibility of its use in temperature estimation. It has been experimentally shown that the identification of flames by means of a thermal imager through the double-glazed window at the initial stage of the fire is impossible due to the absorption of infrared radiation. It is only possible to identify a fire while the window is warming. The temperature of glass pack during fires was investigated experimentally. The error on the temperature difference, i.e. the change from the initial temperature, is estimated. As a result, it is found that the error does not exceed 35%.