Ogorodnikov B.I.,Karpov Research Physicochemical Institute
Russian Meteorology and Hydrology | Year: 2011
A meteorological situation is under consideration during a dust storm observed on September 5-7, 1992 over the Ukraine and Belarus territory contaminated by radionuclide products after the Chernobyl accident. The highest average wind speed in Chernobyl and Pripyat was 10-12 m/s, wind gusts reached 20 m/s. It was found that the radioactive aerosol concentration in the zone of alienation of the Chernobyl NPP increased by one or two orders of magnitude. The transfer of radioactive dust particles to the Vilnius outskirts is recorded. © 2011 Allerton Press, Inc.
Timashev S.F.,Karpov Research Physicochemical Institute |
Solov'Eva A.B.,RAS Semenov Institute of Chemical Physics |
Buslaeva E.Yu.,RAS Kurnakov Institute of General and Inorganic Chemistry |
Gubin S.P.,RAS Kurnakov Institute of General and Inorganic Chemistry
Russian Journal of Physical Chemistry A | Year: 2013
The possibility of obtaining concerted mechanisms of chemical activation in supercritical fluids (SCFs) with the formation of a multicenter general transition state that includes a group of reagent atoms in which the subsequent breaking of chemical bonds and the formation of new chemical bonds start and proceed simultaneously is discussed. Two processes are considered that can occur only in SCF media: the reduction of anthracene in an isopropyl alcohol SCF and the impregnation of the photochromic compound spiroanthrooxazine (SAO) in a polycarbonate matrix in SC CO2 accompanied by an irreversible conformational rearrangement of the SAO structure. Concepts of the possible dependence of the concerted mechanism of the considered processes on the intertwining or entanglement of electron subsystems in forming multicenter transition states are developed. The decisive role of the electromagnetic component of a physical vacuum in obtaining a high degree of correlation in systems of entangled electrons is discussed. © 2013 Pleiades Publishing, Ltd.
Timashev S.F.,Karpov Research Physicochemical Institute
Russian Journal of General Chemistry | Year: 2011
Inner phenomenological essence was revealed for flicker-noise spec-troscopy (FNS), a methodology for extracting information from multifactor dynamic systems on the basis of primary digital information, which was presented as "pheno-menology of complexity" and "materialization" of Edmund Husserl's phenomenology. The basic FNS equations used for analysis of experimental data were given. At the present time, the FNS method can be used for solving three types of problems: (1) determination of parameters or patterns that characterize the dynamics or structural features of complex systems; (2) identification of precursors of abrupt changes in the state of various complex systems based on a priori information about the system dynamics; and (3) assessment of the flow dynamics in distributed systems based on analysis of dynamic correlations in stochastic signals that are measured simultaneously at different points in space. © 2011 Pleiades Publishing, Ltd.
Ostrovsky G.M.,Karpov Research Physicochemical Institute |
Lapteva T.V.,Kazan State Technological University |
Ziyatdinov N.N.,Kazan State Technological University
Theoretical Foundations of Chemical Engineering | Year: 2014
During the design of engineering systems under the conditions of the partial uncertainty of physical, chemical, and economical information, the determination of a design at which its control system would ensure the performance of all constraints (exactly or with somewhat probability) is an essential problem despite the change of internal and external factors at operation stage. In this paper, one- and two-stage optimization problems with hard and soft constraints have been considered that must be solved during the design of flexible optimal systems. Approaches that enable one to avoid the procedures of multidimensional integration at each iteration of the solution of problems have been suggested. © 2014, Pleiades Publishing, Ltd.
Tovbin Yu.K.,Karpov Research Physicochemical Institute |
Titov S.V.,Karpov Research Physicochemical Institute
Russian Journal of Physical Chemistry A | Year: 2013
We investigate the effect of restricting the area of planes of microcrystals and equilibrium density fluctuations in components of binary mixtures on partial isotherms of the adsorption of binary mixtures of molecules and the rate of a surface reaction of the Langmuir-Hinshelwood type. Adsorption of components of mixture is considered in a large canonical assembly, and the rate of an elementary step is calculated in kinetic regime. The value of a section of the surface on a plane contains a number of adsorption centers in the range of 10 to 105. The effect of the structure of a heterogeneous surface on the rate of the considered reaction is studied. The effect of the density fluctuations of adsorbed molecules on partial adsorption isotherms and fluctuations in the rate of reaction on heterogeneous surfaces is discussed. It is shown that the greatest effect of density fluctuations on the rate of a step is observed at low fillings of each plane of a particle and at the almost complete filling of a plane. © 2013 Pleiades Publishing, Ltd.