Zobrazeno 1 - 10
of 18
pro vyhledávání: '"I. V. Koval'chuk"'
Publikováno v:
Materials Science. 56:389-399
The free energy and density of states are computed by the DFT method for the Zr3NiO and Zr3NiN compounds. Their formation was confirmed and numerous Zr3MNx (M = Co, Ni) compounds were synthesized for the first time. It is shown that all these compoun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::109d29699465145eb0d05b991288fa30
https://doi.org/10.1007/s11003-020-00442-w
https://doi.org/10.1007/s11003-020-00442-w
Publikováno v:
Power Technology and Engineering. 53:184-190
Examples are given about the protective and rescue measures being taken for wildlife during creation of a water object. Tests of various methods of minimizing the impact on wildlife carried out during filling of the Lower Bureya HPP reservoir in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d77ee7ef4120cebc77b43bc69dd10d8
https://doi.org/10.1007/s10749-019-01058-0
https://doi.org/10.1007/s10749-019-01058-0
Publikováno v:
Materials Science. 53:359-367
We study the tribological behavior of 45 steel, U8 steel, and SCh 21-40 cast iron in couples with plasma-electrolytic oxide-ceramic layers synthesized on D16T alloy in I-20 mineral oil and in the same oil with an addition of aqueous solution of glyce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21d41801505ca42c2a9da1a4fbf98e03
https://doi.org/10.1007/s11003-017-0083-x
https://doi.org/10.1007/s11003-017-0083-x
Autor:
V. M. Dovhunyk, V. I. Pokhmurs’kyi, Kh. B. Vasyliv, V. A. Vynar, O. P. Khlopyk, I. V. Koval’chuk
Publikováno v:
Materials Science. 51:869-876
We study the corrosion and tribocorrosion properties of tungsten-carbide metal composites alloyed with graphite and chromium and vanadium carbides in a 3% NaCl solution. It is shown that the addition of 2–4% of graphite to the VN20 composite intens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d88e7048a7b7aa0d8e66504940c3bb38
https://doi.org/10.1007/s11003-016-9915-3
https://doi.org/10.1007/s11003-016-9915-3
Autor:
I. V. Koval’chuk, О. B. Ryabov, Volodymyr Levytskyi, О. R. M’yakush, V. S. Babizhets’kyi, B. Ya. Kotur
Publikováno v:
Materials Science. 47:822-829
We have investigated the interaction of the components in the ternary Y–Hf–Fe system by the methods of X-ray phase analysis, X-ray diffraction analysis, and energy-dispersive X-ray microanalysis and constructed an isothermal section of the consti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec324a44bd777f5962aaca725bc9605f
https://doi.org/10.1007/s11003-012-9461-6
https://doi.org/10.1007/s11003-012-9461-6
Publikováno v:
Materials Science. 43:689-693
We study the processes of thermal desorption of hydrogen and hydride disproportionation for the Zr3FeOx (x = 0–1.0 ) intermetallic compounds depending on the amount of oxygen. As the oxygen content of the Zr3FeOx compounds increases, their suscepti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::933b07b815c7e9552d32f96ee945ea52
https://doi.org/10.1007/s11003-008-9015-0
https://doi.org/10.1007/s11003-008-9015-0
Publikováno v:
Materials Science. 41:772-776
Mass-spectrometric investigations of hydrogen liberation from the mixture of powders 3ZrO0.2Hx + ZrFe2, the overall composition of which corresponds to Zr4Fe2O0.6Hx, after its treatment by ball milling for 5 and 50 h show a substantial dependence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49cca62cb7ad58993a12041fd0781ec7
https://doi.org/10.1007/s11003-006-0043-3
https://doi.org/10.1007/s11003-006-0043-3
Publikováno v:
Materials Science. 40:781-786
We study the process of formation of the Laves phases AB2 in Er(M, V)2 (M = Fe or Co) systems and determine their hydrogen-sorption properties. The crystal structure of parent compounds and their saturated hydrides is analyzed by the X-ray diffractio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfadaff6786ed336e79fe4fd3ef0132b
https://doi.org/10.1007/s11003-005-0115-9
https://doi.org/10.1007/s11003-005-0115-9
Publikováno v:
Materials Science. 39:545-553
An improvement of discharge capacity of metal-hydride electrodes based on hydrides of Ti4 − xZr x Ni2O y alloys (0.2 ≤ x ≤ 0.6; 0.2 ≤ y ≤ 1.0) was shown during simultaneous partial Ti → Zr substitution and oxygen modification. The maximal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c04011ae140c2df377d6b109e8bc3b3f
https://doi.org/10.1023/b:masc.0000010933.80070.a9
https://doi.org/10.1023/b:masc.0000010933.80070.a9
Autor:
V V, Koval'chuk, A A, Skoromets, I V, Koval'chuk, E G, Stoianova, M L, Vysotskaia, E V, Melikhova, E V, Il'iaĭnen
Publikováno v:
Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova. 110(12 Pt 2)
We studied 400 patients with ischemic stroke, including 200 patients (the main group), who received 3 courses of phenotropil in the complex rehabilitation treatment in dosage 400 mg/day during 1 year after stroke. The extent of restoration of neurolo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::6deb575ef9d2da6b0af680d0f44dcdd2
https://pubmed.ncbi.nlm.nih.gov/21626817
https://pubmed.ncbi.nlm.nih.gov/21626817