Search

Your search keyword '"Bykov, V. V."' showing total 99 results
Start Over Author "Bykov, V. V." Publication Type Academic Journals
99 results on '"Bykov, V. V."'

20. Scientific Heritage of Vladimir Mikhailovich Millionshchikov

Author

Astashova, I. V., Borovskikh, A. V., Bykov, V. V., Vetokhin, A. N., Goritskii, A. Yu., Izobov, N. A., Il’yashenko, Yu. S., Kapustina, T. O., Kozlov, V. V., Kon’kov, A. A., Matrosov, I. V., Palin, V. V., Rozov, N. Kh., Romanov, M. S., Sergeev, I. N., Radkevich, E. V., Rozanova, O. S., Filimonova, I. V., Filinovskii, A. V., Chechkin, G. A., Shamaev, A. S., and Shaposhnikova, T. A.

Published
2015
Full Text
View/download PDF

23. Numerical study of flow structure (mixing process and reactivity) of diluted hydrogen non-premixed supersonic combustion system.

Author

Ashirova, G. A., Beketaeva, A. O., Naimanova, A. Zh., and Bykov, V. V.

Subjects
COMBUSTION, ALGORITHMS, HIGH temperatures, JET engines, NAVIER-Stokes equations
Abstract

Numerical simulation of supersonic combustion with transverse hydrogen injection is performed by solving the three-dimensional Favre-averaged Navier-Stokes equations coupled by the k -ω turbulence model. These equations are solved using an algorithm that is based on the third-order essentially nonoscillatory scheme. Several cases of the jet compositions (pure hydrogen and hydrogen diluted by nitrogen in 50:50 mol%) are considered to study the influence of the composition onto the structure and reactivity of the supersonic combustion systems. Seven step modified version of Spark model developed by Jachimowski is implemented to model chemical reaction of hydrogen combustion, which performs quite well in the considered relatively high temperatures. The simulation revealed that the jet penetration heights are equal for both cases, and the hydrodynamic fields looked similar except for the temperatures of the zones located ahead and behind the jet injection. The chemical reaction zone, indicated by OH radicals, was more intense for the pure hydrogen case, occupying a narrow region along the oblique shock wave line. In contrast, the use of a hydrogen/nitrogen jet mixture resulted in a significantly wider flame front zone. This suggests that the presence of nitrogen in the mixture diluted the hydrogen concentration, leading to slower combustion. The study shows that the flow properties and reactivity of the mixture significantly changing with the dilutions of the fuel composition. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

40. Effects on thrombocytic hemostasis of a new derivate indolinone.

Author

Bykov, V. V., Serebrov, V. Yu., Udut, V. V., Udut, E. V., and Fisenko, V. P.

Subjects
*ASPIRIN, *INDOLINONE, *BLOOD platelet aggregation, *PLATELET aggregation inhibitors, *HEMOSTASIS
Abstract

Objective. Specific activity of an antiplatelet drug of indolinone series (codenamed DI) was studied in vitro in a model of ADP-induced platelet aggregation in vitro and in vivo in a model of streptozotocininduced diabetes mellitus in rats. Material and Methods. Acetylsalicylic acid and dipyridamole were used as reference drugs. In vitro tests have demonstrated that DI exhibits antiplatelet activity in a wide range of concentrations (0,75×10-6 - 1.5×10-5 M, P<0,05), being comparable to acetylsalicylic acid and dipyridamole. In vivo tests have demonstrated dose-dependent antiplatelet activity of DI in doses of 2,5 - 20 mg/kg (21-14 %). Results and Discussion.Increasing the dose of DI above 10 mg/kg doesn't increase its antiplatelet activity. After multiple oral administration to rats with streptozotocin-induced diabetes mellitus in 10 mg/kg dose, DI has exhibited antiplatelet activity, reducing the platelet aggregation rate to that of the control group (P<0,05).Conclusion. Thus, DI isapromisingcompound for furtherdevelopmentof an antiplatelet drug with new mechanism of action [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

45. Vladimir Alexandrovich Kondratiev on the 70th anniversary of his birth.

Author

Astashova, I. V., Bagirov, L. A., Borovskikh, A. V., Bykov, V. V., Vetokhin, A. N., Goritskii, A. Yu., Grishina, G. V., Denisova, N. V., Il'yashenko, Yu. S., Kapustina, T. O., Kozlov, V. V., Kon'kov, A. A., Matrosov, I. V., Millionschikov, V. N., Nikishin, V. A., Radkevich, E. V., Rosanova, O. S., Rosendorn, E. R., Rozov, N. Kh., and Sadovnichii, V. A.

Subjects
MATHEMATICS, MATHEMATICIANS, DIFFERENTIAL equations, ELLIPTIC functions
Abstract

The article provides an overview of mathematical studies performed by Vladimir Alexandrovich Kondratiev, on the 70th anniversary of his birth. Included are studies on: the oscillation and nonoscillation conditions for solutions of ordinary differential equations; elliptic equations in domains with angular and conical points; and a problem with oblique derivatives.

Published
2007
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results