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504 results on '"Lapin, S. A."'

201. OPPORTUNITIES OF ANTI B-CELL THERAPY IN MULTIPLE SCLEROSIS

Author

Evdoshenko, E. P., primary, Maslyancky, A. L., additional, Zaslavsky, L. G., additional, Skoromets, A. A., additional, Ziuzgin, I. S., additional, Riabykina, O. E., additional, Totolian, N. A., additional, Zueva, E. E., additional, Lapin, S. V., additional, and Totolian, Areg A., additional

Published
2014
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209. Homotopy properties of ∞-simplicial coalgebras and homotopy unital supplemented A-algebras.

Author

Lapin, S.

Subjects
HOMOTOPY groups, ALGEBRA, GRADED modules, HOMOTOPY theory, TENSOR products
Abstract

The homotopy theory of ∞-simplicial coalgebras is developed; in terms of this theory, an additional structure on the tensor bigraded coalgebra of a graded module is described such that endowing the coalgebra with this structure is equivalent to endowing the given graded module with the structure of a homotopy unital A-algebra. [ABSTRACT FROM AUTHOR]

Published
2016
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210. DIAGNOSTIC VALUE OF SEROLOGICAL MARKERS OF RHEUMATOID ARTHRITIS

Author

Maslaynski, Aleksei Leonidovich, primary, Lapin, S V, additional, Mazing, A V, additional, Bulgakova, T V, additional, Lazareva, N M, additional, Cheshuina, M D, additional, Oleinick, P A, additional, Ilivanova, E P, additional, Totolyan, A A, additional, and Mazurov, V I, additional

Published
2012
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211. Symptomatic Epilepsy in Inflammatory Demyelinating Diseases

Author

Totolyan, N. A., primary, Borisova, E. V., additional, Totolyan, A. A., additional, Milyukhina, I. V., additional, Lapin, S. V., additional, Kodzaeva, A. Yu., additional, Prakhova, L. N., additional, Evdoshenko, E. P., additional, Kairbekova, E. I., additional, and Skoromets, A. A., additional

Published
2012
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215. Laser stand for irradiation of targets by laser pulses from the Iskra-5 facility at a repetition rate of 100 MHz

Author

Annenkov, V I, primary, Garanin, Sergey G, additional, Eroshenko, V A, additional, Zhidkov, N V, additional, Zubkov, A V, additional, Kalipanov, S V, additional, Kalmykov, N A, additional, Kovalenko, V P, additional, Krotov, V A, additional, Lapin, S G, additional, Martynenko, S P, additional, Pankratov, V I, additional, Faizullin, V S, additional, Khrustalev, V A, additional, Khudikov, N M, additional, and Chebotar, V S, additional

Published
2009
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217. Polyurethanes with different molecular weight characteristics as materials for assessing the damaging effects of ozone.

Author

Puchkov, A. F., Novakov, I. A., Nistratov, A. V., Tuzhikov, O. O., Kablov, V. F., Orlyanskaya, P. N., Lapin, S. V., and Pyl'nov, D. V.

Subjects
POLYURETHANES, OZONE, OLIGOMERS, HYDROXYL group, FOURIER analysis, MOLECULAR weights
Abstract

The article discusses the study which examines the impact of ozone in plane stress state of polyurethanes. The study tests polydiene urethane (PDU) composites from Krasol-grade oligomers of various molecular weight M, PDI-1K (divinylisoprene), and hydroxyl containing oligomer SKDP-N (divinylpiperylene) through optical microscopy and infrared (IR) fourier spectroscopy. Result shows that polyurethanes' ozone sensitivity depends on molecular weight characteristics (MWCs).

Published
2015
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218. Chain realization of differential modules with ∞-simplicial faces and the B-construction over A-algebras.

Author

Lapin, S.

Subjects
KOSZUL algebras, DUALITY theory (Mathematics), ALGEBRA, POLYNOMIALS, MATHEMATICS
Abstract

On the basis of the colored version of Koszul duality, the notion of a differential module with ∞-simplicial faces is introduced. By using the homotopy technique of differential Lie modules over colored coalgebras, the homotopy invariance of the structure of a differential module with ∞-simplicial faces is proved. A relationship between differential modules with ∞-simplicial faces and A-algebras is described. The notions of the chain realization of a differential module with ∞-simplicial faces and the tensor product of differential modules with ∞-simplicial faces are introduced. It is shown that the chain realization of a tensor differential module with ∞-simplicial faces constructed from an A-algebra and the B-construction over this A-algebra are isomorphic differential coalgebras. [ABSTRACT FROM AUTHOR]

Published
2015
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219. New possibilities of the Iskra-5 facility

Author

Annenkov, V I, primary, Bezuglov, V G, additional, Bessarab, A V, additional, Bogunenko, Yu D, additional, Bondarenko, G A, additional, Galakhov, I V, additional, Garanin, Sergey G, additional, Zhidkov, N V, additional, Kalipanov, S V, additional, Kalmykov, N A, additional, Kovalenko, V P, additional, Lapin, S G, additional, Logutenko, S L, additional, Murugov, Vasilii M, additional, Osin, Vladimir A, additional, Pankratov, V I, additional, Romashov, M Yu, additional, Ryadov, A V, additional, Starodubtsev, V A, additional, Sungatullin, R R, additional, Faizullin, V S, additional, Khrustalev, V A, additional, Khudikov, N M, additional, and Chebotar, V S, additional

Published
2006
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221. Conversion of the 'Iskra-5' iodine laser to second-harmonic operating mode

Author

Annenkov, V I, primary, Bespalov, V I, additional, Bredikhin, V I, additional, Vinogradskiy, L M, additional, Gaidash, V A, additional, Galakhov, I V, additional, Garanin, Sergey G, additional, Ershov, V P, additional, Zhidkov, N V, additional, Zil'berberg, V V, additional, Zubkov, A V, additional, Kalipanov, S V, additional, Kargin, V A, additional, Kirillov, G A, additional, Kovalenko, V P, additional, Kochemasov, G G, additional, Kravchenko, A G, additional, Krotov, V A, additional, Lazarchuk, V P, additional, Lapin, S G, additional, Loginov, V M, additional, Logutenko, S L, additional, Murugov, Vasilii M, additional, Osin, Vladimir A, additional, Pankratov, V I, additional, Romashov, M Yu, additional, Ryadov, A V, additional, Sobolev, S K, additional, Solomatin, I I, additional, Tachaev, G V, additional, Faizullin, V S, additional, Khrustalev, V A, additional, Khudikov, N M, additional, and Chebotar, V S, additional

Published
2005
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224. Domain Decomposition Methods for Wave Propagation in Heterogeneous Media.

Author

de Castro, Alfredo Bermúdez, Gómez, Dolores, Quintela, Peregrina, Salgado, Pilar, Glowinski, R., Lapin, S., Periaux, J., Jacquart, P. M., and Chen, H. Q.

Abstract

The main goal of this paper is to address the numerical solution of a wave equation with discontinuous coefficients by a finite element method using domain decomposition and semimatching grids. A wave equation with absorbing boundary conditions is considered, the coefficients in the equation essentially differ in the subdomains. The problem is approximated by an explicit in time finite difference scheme combined with a piecewise linear finite element method in the space variables on a semimatching grid. The matching condition on the interface is taken into account by means of Lagrange multipliers. The resulting system of linear equations of the saddle-point form is solved by a conjugate gradient method. [ABSTRACT FROM AUTHOR]

Published
2006
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236. Extension of the multiplication operation in E-algebras to an A-morphism of E-algebras and Cartan objects in the category of May algebras.

Author

Lapin, S. V.

Subjects
ALGEBRA, MATHEMATICAL analysis, MATHEMATICS, SET theory, ARITHMETIC, MULTIPLICATION
Abstract

It is proved in the paper that the multiplication operation on an arbitrary E-algebra can be extended to an E-algebra A-morphism. As a corollary, it is proved that every May algebra defined by an E-algebra is a Cartan object in the category of May algebras. [ABSTRACT FROM AUTHOR]

Published
2011
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237. Multiplicative A∞-structure in terms of spectral sequences of fibrations.

Author

Lapin, S.

Subjects
*MATHEMATICS, *MATHEMATICAL sequences, *SPECTRAL theory, *SPECTRAL sequences (Mathematics), *TENSOR algebra
Abstract

In the present paper, the technique of spectral sequences with A ∞-structures in their terms is developed for differential algebras with filtrations. Applications of this technique to the multiplicative spectral sequences of fibrations are given. We show that if the base of fibration is connected and simply connected, then the structure graded A ∞-algebra in the second term of the spectral sequence of a fibration is the tensor product of the cohomology A ∞-algebra of the base and the cohomology A ∞-algebra of the fibre of this fibration. [ABSTRACT FROM AUTHOR]

Published
2010
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238. D∞-differential E∞-algebras and spectral sequences of D∞-differential modules.

Author

Lapin, S. V.

Subjects
FIBER bundles (Mathematics), HOMOLOGICAL algebra, HOMOLOGY theory, SPECTRAL theory, MATHEMATICAL analysis
Abstract

In the present paper, we introduce the concept of a filtered E∞-algebra, construct spectral sequences for such algebras, and apply them to multiplicative cohomological spectral sequences of bundles. The existence of the structure of D∞-differential A∞-algebras in cohomological spectral sequences of bundles over fields is proved and the initial multiplicative component of this structure at the second term of the spectral sequence is calculated. [ABSTRACT FROM AUTHOR]

Published
2009
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239. Iskra-5 pulsed laser with an output power of 120 TW

Author

Annenkov, V I, primary, Bagretsov, V A, additional, Bezuglov, V G, additional, Vinogradskiĭ, L M, additional, Gaĭdash, V A, additional, Galakhov, I V, additional, Gasheev, A S, additional, Guzov, I P, additional, Zadorozhnyiĭ, V I, additional, Eroshenko, V A, additional, Il'in, A Yu, additional, Kargin, V A, additional, Kirillov, G A, additional, Kochemasov, G G, additional, Krotov, V A, additional, Kuz'michev, Yu P, additional, Lapin, S G, additional, L'vov, L V, additional, Mochalov, M R, additional, Murugov, Vasilii M, additional, Osin, Vladimir A, additional, Pankratov, V I, additional, Pegoev, I N, additional, Punin, V T, additional, Ryadov, A V, additional, Senik, A V, additional, Sobolev, S K, additional, Khudikov, N M, additional, Khrustalev, V A, additional, Chebotar, V S, additional, Cherkesov, N A, additional, and Shemyakin, V I, additional

Published
1991
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240. D ∞-differential E ∞-algebras and Steenrod operations in spectral sequences.

Author

Lapin, S.

Subjects
*HOMOLOGICAL algebra, *ALGEBRAIC topology, *MATHEMATICAL sequences, *MATHEMATICAL analysis, *ALGEBRA
Abstract

This paper is devoted to the introduction of a D ∞-differential analog of the notion of an E ∞-(co)algebra and to the construction of generalized Steenrod operations in terms of multiplicative spectral sequences. In this paper, we investigate basic homotopy properties of D ∞-differential E ∞-(co)algebras and construct a spectral sequence of a D ∞-differential E ∞-(co)algebra. [ABSTRACT FROM AUTHOR]

Published
2008
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242. D∞-Differentials and A∞-Structures in Spectral Sequences.

Author

Lapin, S. V.

Subjects
*DIFFERENTIAL algebra, *DIFFERENTIAL equations, *SPECTRAL sequences (Mathematics), *SPECTRAL theory, *ALGEBRA
Abstract

We introduce the notion of D∞-differential and use this notion for studying the structure of differential A∞-algebra on multiplicative spectral sequences. We review basic notions, constructions, and results of our previous papers, where the homotopy invariance of D∞-differentials was proved, D∞-differentials and differential perturbations of chain complexes were compared, and the connection between D∞-differentials and differentials of multiplicative spectral sequences was established. As a consequence of this connection, we describe a method of construction of the structure of A∞-coalgebra on the Milnor coalgebra dual to the Steenrod algebra immediately by the differentials of the Adams spectral sequence. We describe the method of construction of the structure of A∞-comodule over a Milnor A∞-coalgebra on homologies of an arbitrary spectrum. [ABSTRACT FROM AUTHOR]

Published
2004
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243. Results of Hydrochemical Studies of Lake Azabach'e (Kamchatka).

Author

Sapozhnikov, V. V., Arzhanova, N. V., Agatova, A. I., Kirpichev, K. B., Luk'yanova, O. N., Lapin, S. A., Milovskaya, L. V., Ukolova, T. K., Sviridenko, V. D., and Bazarkina, L. A.

Subjects
LAKES, WATER chemistry, HYDROGEN-ion concentration, SILICON, PHYTOPLANKTON
Abstract

The nutrient basis of Lake Azabach'e is studied. The distribution of pH and the concentrations of O2, Pmin, Fe, N–NH+4, N–NO–3, Si, and organic forms of N and P are considered. The chemical basis of biological production of Lake Azabach'e is assessed. It is found that the amount of Si is excessive everywhere and that phytoplankton production is limited by phosphate and mineral nitrogen deficiency in virtually equal degrees. [ABSTRACT FROM AUTHOR]

Published
2004
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244. Oscillations of Foundations Installed on the Ground and Cast-in-Place Piles Subject to Kinematic Effects.

Author

Lapin, S. K.

Subjects
*BUILDING foundations, *OSCILLATIONS, *TUNNELS, *KINEMATICS, *PILES & pile driving, *STRUCTURAL design
Abstract

Results are presented for experimental investigations on the traffic-induced oscillations of two full-scale foundations of a metallic tunnel, one of which is installed directly on the ground, and the other on cast-in-place piles. The foundations are close to one another with respect to mass and the load applied to them. Differences are revealed between the parameters of the actual oscillations of these foundations and their computed values. [ABSTRACT FROM AUTHOR]

Published
2002
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245. Vibration Insulation for Jaw Crushers ― an Effective Means of Reducing Bed and Foundation Deformations.

Author

Lapin, S. K.

Subjects
*HYDRAULIC structures, *CAISSONS, *MILLS & mill-work, *MANUFACTURING processes, *VIBRATION (Mechanics), *MILLING machinery
Abstract

Nonuniform settlements of a primary-crushing mill, which resulted from the operation of three heavy-duty jaw crushers housed in the mill, are described. Test results are cited for foundations with and without vibration-insulated crushers. The high effectiveness of the proposed method of protecting the foundation beds from additional deformations caused by industrial vibration is noted. [ABSTRACT FROM AUTHOR]

Published
2000
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246. Differential Lie modules over curved colored coalgebras and ∞-simplicial modules

Author

Lapin, S.

Abstract

The notion of differential Lie module over a curved colored coalgebra is introduced. The homotopy invariance of the structure of differential Lie module over a curved colored coalgebra is proved. The notion of ∞-simplicial module is introduced using the construction of a differential Lie module over a curved colored coalgebra and the Koszul duality theory for quadratic-scalar colored algebras. The homotopy invariance of the structure of a ∞-simplicial module is proved.

Published
2014
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248. Hydrologic-hydrochemical investigations in the frontal zone of the Gulf of Ob in September 2014.

Author

Lapin, S., Artamonova, K., Gangnus, I., and Kivva, K.

Subjects
*HYDROLOGIC cycle, *WATER chemistry, *FRESH water, *MINERALS
Abstract

The article offers information on the hydrologicalâ€hydro chemical investigations in the frontal zone of the Gulf of Ob, Russia. Topics discussed include determining the concentrations of mineral nutrients, enrichment of nutrients in the northern freshwater part of the gulf, and effect of the regeneration of nutrients in the frontal zone.

Published
2015
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249. Studies of the hydrological structure of Prostor Bay (Iturup Island, Sea of Okhotsk) in May-July 2013-2014.

Author

Lapin, S. and Kivva, K.

Subjects
*PACIFIC salmon, *BAYS, *ZOOPLANKTON, *ATMOSPHERIC circulation, *WATER currents
Abstract

The article focuses on a research conducted to understand hydrological structure of Prostor Bay, which includes study of early sea period in the development of local populations of Pacific salmons under natural and artificial reproduction. Topics discussed include development and quantity of zooplankton; influence of waters of various genesis, which came with Soya, East Sakhalin, and Kuril straits currents; and impact of wind circulation on the bay.

Published
2015
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250. Homotopy simplicial faces and the homology of realizations of simplicial topological spaces

Author

Lapin, S.

Abstract

The notion of a differential module with homotopy simplicial faces is introduced, which is a homotopy analog of the notion of a differential module with simplicial faces. The homotopy invariance of the structure of a differential module with homotopy simplicial faces is proved. Relationships between the construction of a differential module with homotopy simplicial faces and the theories of A∞-algebras and D∞-differential modules are found. Applications of the method of homotopy simplicial faces to describing the homology of realizations of simplicial topological spaces are presented.

Published
2013
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