| Archieve: | 2008 I | 2007 I | 2006 I | 2005 |
Articles in foreign periodicals 2007
Petrina, L.S Determination of 131I based dose equivalents for emissions of short-lived iodine isotopes // Atomic Energy Volume 102, Issue 5, May 2007, Pages 389-394
The coefficients required for evaluating the inhalation dose from short-live iodine isotopes entering the human body during a radiation accident associated with a spontaneous chain reaction are validated computationally. Such coefficients make it possible to reduce the effect of a collection of iodine isotopes to that of an equivalent amount of 131I. The dose inhalation load from an iodine emission aerosol cloud and the site contamination with 131I are evaluated for a spontaneous chain reaction in systems consisting of enriched metallic uranium with 1019 fissions with no localizing facilities present. © 2007 Springer Science+Business Media, Inc
Baronskaya, N.A.a, Minyukova, T.P.a, Sipatrov, A.G.a, Demeshkina, M.P.a, A.A.Khassina, Dimov, S.V.b, Kozlov, S.P.b, Kuznetsov, V.V.b, Terentiev, V.Y., Khristolyubov, A.P., O.F.Brizitskiy, Yurieva, T.M.a Compact reactor for water gas shift reaction over thermal-conducting catalysts // Chemical Engineering Journal 2007,Volume 134, Issue 1-3, 1 Pages 195-199
a Boreskov Institute of Catalysis, Novosibirsk, Russian Federation
b Kutateladze Institute of Thermophysics, Novosibirsk, Russian Federation
Thermal conductive catalyst plates (TCP) for compact WGSR reactors were prepared and studied. High thermal conductivity of 2.5-5 W (m K)-1 can be achieved, while the effective catalytic activity of TCP is even higher than that of the commercial size catalyst grains. TCP can be efficiently used for temperature sensitive exothermic reactions in compact apparatuses with controlled temperature profile. Using the TCP reactor WGSR of the fuel gas containing 12% of CO down to 1% of residual CO can be performed in one stage at GSHV of above 6000 h-1. The TCP shape and the way of arrangement are important for the reactor performance and should be in the focus of our future studies. © 2007 Elsevier B.V. All rights reserved
Minyukova, T.P.a , Itenberg, I.Sh.a, Khassin, A.A.a, Sipatrov, A.G.a, Dokuchits, E.V.a, Terent'ev, V.Ya. , Khristolyubov, A.P., Brizitskii, O.F., Yurieva, T.M.a Permeable composite material for compact apparatus for hydrogen-rich gases deep cleaning from CO // Chemical Engineering Journal 2007,Volume 134, Issue 1-3, 1 Pages 235-238
a Boreskov Institute of Catalysis, Russian Federation
In order to provide a wide application of the proton exchange membrane fuel cell (PEMFC) technology, reduce cost and improve characteristics of PEMFC-based power plants, it is necessary to create a compact and economic apparatus for deep cleaning of converted fuel from carbon monoxide. The obstacle of preferential CO hydrogenation is the presence of about 20 vol.% of CO2 and the same amount of H2O along with 1 vol.% of CO. The compact apparatus for deep purification from CO can be only created basing on the highly active (providing 10-20 ppm CO in the outlet gas at GHSV above 6000 h-1) and selective catalyst (at least 30% of CH4 and higher hydrocarbons is to be formed by CO hydrogenation). In the present paper, we study the process of preferential CO hydrogenation over the nickel-chromium catalyst, which was found earlier to be efficient in the CO hydrogenation over fine catalyst fraction: outlet CO content below 20 ppm and the selectivity not less than 0.3 at GHSV above 6000 h-1. We report on the effect of the catalyst grain size on the CO hydrogenation selectivity and consider the possibility of using permeable composite materials for weakening the intraparticle diffusion constrains and for efficient performing the reaction under the study close to the kinetic region. © 2007 Elsevier B.V. All rights reserved
Borisenok, V.A. , Kruchinin, V.A., Bragunets, V.A. , Borisenok, S.V. , Simakov, V.G. , Zhernokletov, M.V. Measuring shock-induced electrical conductivity in piezoelectrics and ferroelectrics. Single-crystal quartz // Combustion, Explosion and Shock Waves 2007,Volume 43, Issue 1, Pages 96-103
A method is proposed to measure shock-induced electrical conductivity in electrically active dielectrics - piezoelectrics and ferroelectrics. Results of measurements of electrical conductivity in single-crystal quartz are reported. © Springer Science+Business Media, Inc. 2007
Panov, K.N. , Komrachkov, V.A., Tselikov, I.S. Radiographic study of interaction of shock and detonation waves in a high explosive // Combustion, Explosion and Shock Waves 2007,Volume 43, Issue 3, Pages 365-371
Collisions of shock and detonation waves in an HMX-based high explosive are experimentally studied with the use of flash radiography. Based on X-ray patterns, specific features of the wave-interaction process are identified, and qualitative differences are found in detonation formation and evolution in an explosive precompressed by a weak shock wave and in an undisturbed explosive. © Springer Science+Business Media, Inc. 2007
Proskudin, V.F., Belyaev, E.N. Combustion of pressed specimens of heterogeneous systems subjected to a constant axial mechanical load // Combustion, Explosion and Shock Waves 2007,Volume 43, Issue 3, Pages 339-344
The growth dynamics of the height of burning pressed specimens with the specimen ends subjected to a compressive force of constant magnitude is studied using the heterogeneous Ti+C+20% TiC system as an example. It is found that in the examined range of compressive forces 0.1-2 kg/cm2, the growth of the height of the burning specimens with time obeys a linear law; under a compressive force of ≈0.1 kg/cm2, the specimen height increases by ≈100%, and under a force of ≈2 kg/cm2, it increases by about 25%. The method used to measure the growth dynamics of the specimen height during combustion proved a useful tool for the experimental determination of both the burning time of the specimens and the delay in the transfer of combustion through an obstacle. © Springer Science+Business Media, Inc. 2007
Tarasov, M.D. , Karpenko, I.I., Sudovtsov, V.A., Tolshmyakov, A.I. Measuring the brightness temperature of a detonation front in a porous explosive // Combustion, Explosion and Shock Waves 2007, Volume 43, Issue 4, Pages 465-467
The detonation temperature of pressed PETN grains with a relative volumetric concentration of air pores of 0.0047÷0.147 was measured using an optical fiber pyrometer at wavelengths of 678 and 487 nm. The nonequilibrium nature of the radiation of the detonation front was shown to be due to the presence of two radiation sources with different temperatures. One source was the explosion products and the other was the strongly compressed air pores, in which air was heated to a temperature above 104 K. © 2007 Springer Science+Business Media, Inc
Borisenok, V.A. , Simakov, V.G., Volgin, V.A., Bel'Skii, V.M., Zhernokletov, M.V. Investigation of phase transformations in iron and cerium using a polyvinylidene fluoride pressure gauge // Combustion, Explosion and Shock Waves 2007,Volume 43, Issue 4, Pages 476-481
This paper presents results of studies of shock-induced phase transformations in iron (polymorphic 
transition) and cerium (isomorphic 
transition) using a polyvinylidene fluoride pressure gauge. © 2007 Springer Science+Business Media, Inc
Lin, E.E Effect of surface phenomena on target destruction by a multiple impact of solids // Combustion, Explosion and Shock Waves 2007,Volume 43, Issue 5, Pages 616-618
An explanation is offered for elevated effectiveness of penetration of a group of solids into solid targets with a moderate velocity of a multiple impact. © 2007 Springer Science+Business Media, Inc
Alterkop, B.a , Dubinova, I.D., Dubinov, A.E., Boxman, R.L.a The double sheath at the plasma-wall boundary // Contributions to Plasma Physics` Volume 47, Issue 3, 2007, Pages 190-201
a Electrical Discharge and Plasma Laboratory, Tel Aviv University, Tel Aviv, Israel
The relation between plasma parameters determining a steady-state charged sheath at a plasma-wall boundary was derived and analyzed using a fluid model, which accounted for inertia and partial pressure of both plasma components. The relation generalizes the well-known Bohm criterion and, in particular, shows that a steady-state sheath may be formed in some cases where the Bohm criterion is not satisfied. Conditions allowing formation of a double sheath structure were formulated and analyzed. It was shown that the structure may be formed only if a) the generalized Bohm criterion is satisfied, and b) the Sagdeev potential has a minimum. The double sheath structure consists of two sub-sheath of different polarity, which depends on the wall potential polarity and the relation between the plasma component temperatures and inertia. For positive wall potential, the sub-sheath adjacent to the plasma (the sheath edge) is enriched by negative particles, and the sub-sheath adjacent to the wall is enriched by positive particles, while the sub-sheath polarities are reversed for negative wall potential. An analytical theory was formulated and illustrated by numerical solutions of the Poisson equation for special cases. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA
| Archieve: | 2008 I | 2007 I | 2006 I | 2005 |