Výsledky vyhledávání - "A. I. Boikova"

Carbon accumulation dynamics of the Klukva peatland at the southern boundary of broad-leaved forest zone in European Russia

Autor: E M Volkova, O A Leonova, O I Boikova, E Yu Novenko, A V Olchev

Publikováno v: IOP Conference Series: Earth and Environmental Science. 1093:012006

The study is focused on reconstructing the carbon accumulation rate of the peatland Klukva (1 ha) situated at the southern boundary of broad-leaved forest zone within the Oka river basin in European Russia. The age of the peatland is about 9400 cal y

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6b8fbe31c56bef8b0c7aa68b125bbeac
https://doi.org/10.1088/1755-1315/1093/1/012006

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On the continuous analogue of the Seidel method

Autor: I. V. Boikov, A. I. Boikova

Publikováno v: Zhurnal Srednevolzhskogo Matematicheskogo Obshchestva. 20:364-377

Continuous Seidel method for solving systems of linear and nonlinear algebraic equations is constructed in the article, and the convergence of this method is investigated. According to the method discussed, solving a system of algebraic equations is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22454aa0d7439bb4bc21c41c1d2bace0
https://doi.org/10.15507/2079-6900.20.201804.364-377

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Continuous Method for Solution of Gravity Prospecting Problems

Autor: O. A. Baulina, A. I. Boikova, I. V. Boikov

Publikováno v: Springer Proceedings in Earth and Environmental Sciences ISBN: 9783319976693

The continuous operator method for solving operator equations is presented. An applications of the continuous operator method for solving linear and nonlinear inverse problems of logarithmic and Newtonian potentials are given.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c40e455fbdea0e1cfdca1b7e74176c4e
https://doi.org/10.1007/978-3-319-97670-9_7

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Iterative methods for a class of convolution equations

Autor: I. V. Boikov, A. I. Boikova

Publikováno v: Differential Equations. 46:1322-1329

We suggest a method for constructing iterative parallel algorithms for integral convolution equations.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8085ac5acb9c8993b31075220085de5
https://doi.org/10.1134/s0012266110090089

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A parallel method of solving nonlinear inverse problems in gravimetry and magnetometry

Autor: A. I. Boikova, I. V. Boikov

Publikováno v: Izvestiya, Physics of the Solid Earth. 45:248-257

A parallel iterative method of solving nonlinear inverse logarithmic potential problems and three-dimensional problems in gravimetry and magnetometry is proposed.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b933ebc680d2fc21874792637c856240
https://doi.org/10.1134/s1069351309030069

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Optimal methods for calculating transforms of potential fields

Autor: A. I. Boikova

Publikováno v: Izvestiya, Physics of the Solid Earth. 44:336-345

Accuracy-optimized methods are developed for the calculation of transforms of one-and multidimensional fields.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b186a2670bc2c958ac0c904dee7461e
https://doi.org/10.1134/s11486-008-4007-1

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Synthesis of N-substituted 9-[2-(3,4-methylenedioxyphenyl)-2-oxoethyl]-1,5-dinitro-7,8-benzo-3-azabicyclo[3.3.1]non-7-en-6-ones

Autor: O. I. Boikova, Yu. M. Atroshchenko, N. A. Troizkiy, I. V. Shahkheldyan, I. E. Yakunina, K. I. Kobrakov

Publikováno v: Chemistry of Heterocyclic Compounds. 43:1174-1180

Aminomethylation has been accomplished of the anionic Yanovskii adduct of 2,4-dinitronaphthol and 3,4-dimethylenedioxyacetophenone. The structure of the 3-substituted 9-[2-(3,4-methylenedioxyphenyl)-2-oxoethyl]-1,5-dinitro-7,8-benzo-3-azabicylo[3.3.1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f20447aa2cc08463a02690ff2b88c5dd
https://doi.org/10.1007/s10593-007-0180-0

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Aminomethylation by Formaldehyde and Primary Amines of Anionic -Adduct Obtained from 2,4-Dinitrophenol and Acetophenone Carbanion

Autor: A. N. Shchukin, O. Ya. Borbulevych, O. I. Boikova, G. V. Grintselev-Knyazev, I. E. Yakunina, O. V. Leonova, I. V. Shakhkel'dyan, Yu. M. Atroshchenko, E. N. Alifanova, V. A. Subbotin

Publikováno v: Russian Journal of Organic Chemistry. 39:1593-1602

By condensation of 2,4-bis(aci-nitro)-3-(2-phenyl-2-oxoethyl)cyclohex-5-en-1-one with formaldehyde and primary amines a series of N-substituted 9-(2-phenyl-2-oxoethyl)-1,5-dinitro-3-azabicyclo[3.3.1]non-7-en-6-ones was synthesized. With the use of X-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9f6f85aa62da9747edea573eb9edf9d1
https://doi.org/10.1023/b:rujo.0000013133.63685.ca

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Biodeterioration of construction materials

Autor: A. I. Boikova, A. A. Gorbushina, I. A. Kondratyeva

Publikováno v: Glass Physics and Chemistry. 32:254-256

In this paper, the behavior of industrial portland cement clinker under influence of atmosphere conditions was studied. Industrial clinkers are characterized by a complex chemical and mineralogical composition. the samples of the polycomponent materi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f35af1dc88ea97d87c6255a05cf1cb31
https://doi.org/10.1134/s1087659606020209

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