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Akramov T.A.,Czech Institute of Chemical Process Fundamentals | Akramov T.A.,Russian State Trade-Economic University | Stavarek P.,Czech Institute of Chemical Process Fundamentals | Jiricny V.,Czech Institute of Chemical Process Fundamentals | Stanek V.,Czech Institute of Chemical Process Fundamentals
Industrial and Engineering Chemistry Research | Year: 2011

Functional analysis of mass balances on gas and liquid, and pressure drop equations describing the cocurrent flow in packed beds has yielded two criteria. Positive values of these criteria has been shown sufficient to achieve energy savings by synchronized periodic pulsations of inlet gas and liquid velocities or by liquid velocity only compared to the situation under the same mean steady inlet phase velocities. This, however, is not the case of pulsation by gas inlet velocity alone.The developed criteria have been evaluated from data obtained by experimental measurement of liquid holdup and gas pressure drop in a column 0.05 m in diameter packed to 1 m by 0.003 m glass spheres using water/air and toluene/air system. Our experiments showed these criteria to be fulfilled in the whole domain of gas and liquid velocities tested.Evaluation of the energy savings under pulsations relative to the steady state operation showed that the savings for water/air system may reach up to 4% with the maximum in region of high and intermediate liquid velocities and low gas velocities. For the toluene/air system the savings are somewhat lower and occur in the same velocity domain. © 2011 American Chemical Society.


Goncharova O.V.,Russian State Trade-Economic University
Contemporary Problems of Ecology | Year: 2014

This paper presents the results of studies on the influence of hunting on the population dynamics of the red fox in Western Siberia in the 17th and 20th centuries. The relatively stable population rate of this predator is noted in the indicated centuries. © 2014 Pleiades Publishing, Ltd.


Kazunina G.A.,Kemerovo State University | Alekseev D.V.,Russian State Trade-Economic University
Advanced Materials Research | Year: 2013

The relative analysis of characteristics of time series of "damage number" and "damage cluster number" was made with a probabilistic cellular automaton on the basis of simulation of damage cluster ensemble evolution. There was demonstrated, that the transfer of the time series "damage number" autocorrelation to negative value conforms the transfer of cluster ensemble evolution to the stage of coalescence. The qualitative consent between the behaviour of autocorrelation observed by experiment with measurement phonon and electromagnetic emitting in loaded materials was assigned. © (2013) Trans Tech Publications, Switzerland.


Tsareva S.A.,Russian State Trade-Economic University | Krasnova V.P.,Russian State Trade-Economic University | Gryaznova M.V.,Russian State Trade-Economic University
Human Ecology | Year: 2013

There has been estimated exposure of chemical contaminants in samples of poultry of regional producers sold in one of the largest hypermarkets in Ivanovo. Food consumption was studied in a cross-sectional study using the method of 24-hour food reproduction. Priority pollutants of the samples of poultry meat forming the risk of development of non-carcinogenic and carcinogenic effects in the population were nitrates, compounds of lead, cadmium, arsenic and mercury. The exposure value estimated on the basis of the median values for nitrate compounds, lead, cadmium, arsenic, mercury constituted respectively 8.64×10-2; 1.12×10-3; 1.12×10-4; 2.80×10-4; 7.98×10 -6 mg/kg of body weight. The coefficients of risk (HQ) have been calculated according to the prevailing contaminants. A dependence has been found of the decreasing series of heavy metal contamination in poultry meat, which had the following distribution pattern: Pb→ As→ Cd→ Hg.


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