An experimental study of the combustion of mixtures of hydrocarbon fuels in a water heater was carried out. The dependences of the outlet temperature of the heat carrier on the composition of the fuel in two cases were established: a mixture of methane and propane-butane fuel, a mixture of methane and hydrogen.
Keywords: hydrocarbon fuel, variable composition, heater, reclaiming, energy efficient and environmental combustion
An experimental assessment of the dependence of the normal flame velocity of methane-hydrogen fuel with air using the Gouy-Michelson method has been carried out. The concentration of hydrogen varied from 0% to 70% by volume.
Keywords: burning rate, normal flame propagation speed, flame front, methane-hydrogen fuel, Gouy-Michelson method
The characteristics of the migration processes in Russia and the Republic of Karelia. Shown that research in the field of promotion of the Russian language and Russian as a foreign language as a native language in Russia and abroad have seen in close conjunction with the analysis of migration processes associated with the need for teaching Russian adapting foreign citizens in the country. The analysis showed that the transition to a "quiet" conditions of a market economy after the 2000 cross-country movement of labor with Russia intensified: the capacity of the Russian labor market and the increased mobility of Russians led the growth of migration flows, Russia as a whole remains a "host" side - the number of labor migrants in Russia considerably exceeds the number of Russians traveling to work abroad. Such a situation is typical for the Republic of Karelia. A comparison of labor migration on vocational qualification groups
Keywords: migration, Republic of Karelia, Russia, Russian language.
The purpose of investigation is to examine the effect of adaptation to difficult-house physical stress on the regulation of the vertical posture of man. For the analysis of the ability to maintain a vertical position used stabilographic hardware-software complex "Stabilan-1-02" (JSK Rhythm ", Russia). The ability to maintain a vertical position was evaluated in two static positions: 1) the main stand (OS) in the presence and absence of visual information, and 2) dip (PP) in the presence of visual information. Revealed that an increase of physical performance ability to maintain balance in static positions, especially in the complicated conditions (deprivation of visual information and static muscle tension) increases.
Keywords: Sports stabilometry, adaptation, vertical pose
Information about authors of issue №4 p.2 (2012)
Information about authors of issue №4 (2011)