Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Pavlo Demchenko"'
Autor:
Oleh Shpotyuk, Malgorzata Hyla, Adam Ingram, Yaroslav Shpotyuk, Vitaliy Boyko, Pavlo Demchenko, Renata Wojnarowska-Nowak, Zdenka Lukáčová Bujňáková, Peter Baláž
Publikováno v:
Molecules, Vol 29, Iss 16, p 3948 (2024)
Binary AsxSe100−x alloys from the border of a glass-forming region (65 < x < 70) subjected to nanomilling in dry and dry–wet modes are characterized by the XRPD, micro-Raman scattering (micro-RS) and revised positron annihilation lifetime (PAL) m
Externí odkaz:
https://doaj.org/article/22ea85a4c62748d99087b2010d35847b
Autor:
Oleh Shpotyuk, Malgorzata Hyla, Yaroslav Shpotyuk, Zdenka Lukáčová Bujňáková, Peter Baláž, Pavlo Demchenko, Andrzej Kozdraś, Vitaliy Boyko, Andriy Kovalskiy
Publikováno v:
Molecules, Vol 29, Iss 14, p 3245 (2024)
Polyamorphic transformations driven by high-energy mechanical ball milling (nanomilling) are recognized in a melt-quenched glassy alloy of tetra-arsenic triselenide (As4Se3). We employed XRPD analysis complemented by thermophysical heat-transfer and
Externí odkaz:
https://doaj.org/article/cb0e8859251f4d03915d9a002d0dabd2
Autor:
Oleh Shpotyuk, Zdenka Lukáčová Bujňáková, Peter Baláž, Andriy Kovalskiy, Małgorzata Sznajder, Jozef Cebulski, Yaroslav Shpotyuk, Pavlo Demchenko, Ihor Syvorotka
Publikováno v:
Materials, Vol 17, Iss 8, p 1726 (2024)
Multifunctional nanocomposites from an equimolar As4S4/Fe3O4 cut section have been successfully fabricated from coarse-grained bulky counterparts, employing two-step mechanochemical processing in a high-energy mill operational in dry- and wet-milling
Externí odkaz:
https://doaj.org/article/f66f77ceff0849f283c474a7fee2937b
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 16, Iss 2, Pp 9-27 (2021)
Enterosorption is a cost-effective and efficient approach to reducing the impact of chronic exposure to heavy metals and radionuclides. As an auxiliary method to medical treatment, it can protect population chronically exposed to the intake of heavy
Externí odkaz:
https://doaj.org/article/40445a6eeda549a8a2cd408865daa0b7
Publikováno v:
International Journal of Innovative Technologies in Economy, Iss 2(29), Pp 18-26 (2020)
The theoretical principles of modeling the process of evaluation of business strategies for ensuring sustainable economic development of iron ore enterprises are considered in the article, taking into account the current state of the domestic economy
Externí odkaz:
https://doaj.org/article/d93c2c91cf114720a70aaff3475b7a5d
Autor:
Mykola Moroz, Fiseha Tesfaye, Pavlo Demchenko, Emanuela Mastronardo, Oksana Mysina, Myroslava Prokhorenko, Serhiy Prokhorenko, Daniel Lindberg, Oleksandr Reshetnyak, Leena Hupa
Publikováno v:
Energies, Vol 15, Iss 21, p 8180 (2022)
The equilibrium concentration space of the Ag–In–Te system in the part AgInTe2–Te–In2Te3 was studied through the modified solid-state electromotive force (EMF) method by dividing In2Te3–In2Te5–Ag3In97Te147 (I), In2Te5–Te–Ag3In97Te147
Externí odkaz:
https://doaj.org/article/abffac5b34294244ac1a2df300124cfa
Autor:
Pavlo Demchenko
Publikováno v:
International Journal of Innovative Technologies in Economy, Iss 5(32) (2020)
In today's complex conditions of enterprise operation, innovation processes in most of them are characterized by a set of complex complex organizational measures, which can be implemented only in the implementation of sequentially parallel informatio
Externí odkaz:
https://doaj.org/article/e4bb81244aea4fce9bdd24b4e1d8701b
Autor:
Yaroslav Shpotyuk, Pavlo Demchenko, Oleh Shpotyuk, Valentina Balitska, Catherine Boussard-Pledel, Bruno Bureau, Zdenka Lukáčová Bujňáková, Peter Baláž
Publikováno v:
Materials, Vol 14, Iss 16, p 4478 (2021)
The impact of high-energy milling on glassy arsenic monoselenide g-AsSe is studied with X-ray diffraction applied to diffuse peak-halos proper to intermediate- and extended-range ordering revealed in first and second sharp diffraction peaks (FSDP and
Externí odkaz:
https://doaj.org/article/4b1d4dbb2056483984f3b783d9b42eba
Autor:
Mykola Moroz, Fiseha Tesfaye, Pavlo Demchenko, Myroslava Prokhorenko, Nataliya Yarema, Daniel Lindberg, Oleksandr Reshetnyak, Leena Hupa
Publikováno v:
Energies, Vol 14, Iss 5, p 1314 (2021)
Equilibrium phase formations below 600 K in the parts Ag2Te–FeTe2–F1.12Te–Ag2Te and Ag8GeTe6–GeTe–FeTe2–AgFeTe2–Ag8GeTe6 of the Fe–Ag–Ge–Te system were established by the electromotive force (EMF) method. The positions of 3- and 4
Externí odkaz:
https://doaj.org/article/a89d6f346eb74ad5b9ea5297f6f5b24d
Autor:
Erika Dutková, Zdenka Lukáčová Bujňáková, Oleh Sphotyuk, Jana Jakubíková, Danka Cholujová, Viera Šišková, Nina Daneu, Matej Baláž, Jaroslav Kováč, Jaroslav Briančin, Pavlo Demchenko
Publikováno v:
Nanomaterials, Vol 11, Iss 1, p 69 (2020)
The CuInSe2/ZnS multiparticulate nanocomposites were first synthesized employing two-step mechanochemical synthesis. In the first step, tetragonal CuInSe2 crystals prepared from copper, indium and selenium precursors were co-milled with zinc acetate
Externí odkaz:
https://doaj.org/article/e423f8e804304f00bad4a3ae6a1af800