No. 2 (2021): Reports of the National Academy of Sciences of Ukraine

View No. 2 (2021): Reports of the National Academy of Sciences of Ukraine

DOI: https://doi.org/10.15407/dopovidi2021.02

Published: 30.04.2021

Mathematics

On the problem of stability of a motion of essentially nonlinear systems

A.A. Martynyuk, V.O. Chernienko

3-12
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DOI: https://doi.org/10.15407/dopovidi2021.02.003

Mechanics

On the influence of finite initial deformations on the surface instability of incompressible elastic layer interacting with the halfspace of a viscous compressible fluid

А.M. Bagno

13-20
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DOI: https://doi.org/10.15407/dopovidi2021.02.013
Analogies between the classical problem on vibrations of two coupled bodies and the nonclassical problem on propagation of plane waves in theory of two-phase mixtures

J.J. Rushchitsky

21-28
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DOI: https://doi.org/10.15407/dopovidi2021.02.021
Analysis of the correctness of problems in the mechanics of inelastic deformation with the influence of a stressed state on the processes of radiation swelling and radiation creep of the material

O. Yu. Chirkov

29-37
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DOI: https://doi.org/10.15407/dopovidi2021.02.029

Physics

Classes of projective representations in determining the symmetry of collective spinor excitations and their dispersion in crystals and periodic nanostructures

L. A. Bulavin, V.O. Gubanov, A.P. Naumenko

38-50
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DOI: https://doi.org/10.15407/dopovidi2021.02.038

Materials Science

Influence of the martensitic transformation kinetics on the migration of atoms

Yu.N. Koval, D.S. Gertsriken, V.F. Mazanko, S.I. Bogdanov

51-58
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DOI: https://doi.org/10.15407/dopovidi2021.02.051
Obtaining and crystal structure of graphite intercaled by nickel

О.І. Nakonechna, N.N. Belyavina, A.M. Kurylyuk, V.A. Makara

59-64
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DOI: https://doi.org/10.15407/dopovidi2021.02.059

Geosciences

Spectral amplification of seismic oscillations by soils on the territory of Kyiv

O.V. Kendzera, Yu.V. Semenova

65-70
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DOI: https://doi.org/10.15407/dopovidi2021.02.065
Climate change and water resources of the Desna river basin till the middle of the XXI century

V.V. Osypov, N.M. Osadcha, V.I. Osadchyi

71-82
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DOI: https://doi.org/10.15407/dopovidi2021.02.071
Features of the geological structure of NASA Perseverance rover landing site on Mars based on the results of frequency-resonance processing of images from spacecrafts

M.A. Yakymchuk, I.M. Korchagin

83-90
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DOI: https://doi.org/10.15407/dopovidi2021.02.083

Chemistry

Antioxidant properties of plant extracts for biodiesel stabilization

I.V. Laguta, O.N. Stavinskaya, P.O. Kuzema, R.V. Ivannikov, V.N. Anishchenko, О.P. Linnik

91-99
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DOI: https://doi.org/10.15407/dopovidi2021.02.091
Synthesis and structure of complex phosphates Na3,5MIІ 0,5Fe1,5(PO4)3 (MII — Mg, Ni), obtained under condition of the crystallization of multicomponent self-fluxes

N.Yu. Strutynska, A.V. Spivak, V.N. Baumer, M.S. Slobodyanik

100-107
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DOI: https://doi.org/10.15407/dopovidi2021.02.100

Biology

Geographical parthenogenesis of earthworms (Oligochaeta, Lumbricidae) species communities in the situation of open landscapes in Ukraine

S.V. Mezhzherin, Yu.Yu. Chayka, V.V. Popov, R.P. Vlasenko, O.I. Zhalay, O.V. Harbar

108-114
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DOI: https://doi.org/10.15407/dopovidi2021.02.108
Mass spectrometric analysis of oligoribonucleotides of total yeast RNA

Z.Yu. Tkachuk, S.M. Levchenko

115-122
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DOI: https://doi.org/10.15407/dopovidi2021.02.115