Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Karol Kovaľ"'
Autor:
Ladislav Falat, Lucia Čiripová, Ondrej Petruš, Viktor Puchý, Ivan Petryshynets, Karol Kovaľ, Róbert Džunda
Publikováno v:
Crystals, Vol 13, Iss 8, p 1249 (2023)
In this work, solution-annealed AISI 316H grade austenitic stainless steel was studied in terms of investigating the electrolytic hydrogen charging effects on the resulting Charpy impact toughness and dry sliding tribological behavior. Conventional C
Externí odkaz:
https://doaj.org/article/ea7d5a2a355e49d693faec0ed7d4d32e
Autor:
Iryna Antal, Oliver Strbak, Vlasta Zavisova, Jana Vojtova, Martina Kubovcikova, Alena Jurikova, Iryna Khmara, Vladimir Girman, Róbert Džunda, Karol Kovaľ, Martina Koneracka
Publikováno v:
Nanomaterials, Vol 13, Iss 12, p 1831 (2023)
A colloidal solution of magnetic nanoparticles (MNPs) modified with biocompatible positively charged poly-L-lysine (PLL) with an oleate (OL) layer employed as an initial coating was produced as a potential MRI contrast agent. The effect of various PL
Externí odkaz:
https://doaj.org/article/0f3797adc1b44196816c1564ca08614f
Autor:
Ladislav Falat, Lucia Čiripová, Ivan Petryshynets, Ondrej Milkovič, Miroslav Džupon, Karol Kovaľ
Publikováno v:
Crystals, Vol 12, Iss 10, p 1419 (2022)
In this work, the effects of electrochemical hydrogen charging of 316H grade austenitic stainless steel were investigated in order to characterize its hydrogen embrittlement (HE) resistance. The as-received 316H material was in a fully recrystallized
Externí odkaz:
https://doaj.org/article/531e71de0633405db65423fc78187b58
Autor:
František Mihok, Ján Macko, Andrej Oriňak, Renáta Oriňaková, Karol Kovaľ, Katarina Sisáková, Ondrej Petruš, Zuzana Kostecká
Publikováno v:
Current Research in Green and Sustainable Chemistry, Vol 3, Iss , Pp 100030- (2020)
Natural zeolite clinoptilolite was modified with ammonium chloride to prepare a novel controlled release fertilizer. Zeolite as a carrier of fertilizing medium forms a “barrier” to the spontaneous release of the fertilizer into soil. Two particle
Externí odkaz:
https://doaj.org/article/35db27edc8ff411aab6cf4aa6be9368a
Autor:
Yuliia Chabak, Bohdan Efremenko, Ivan Petryshynets, Vasily Efremenko, Angeliki G. Lekatou, Vadym Zurnadzhy, Iurii Bogomol, Victor Fedun, Karol Kovaľ, Tatiana Pastukhova
Publikováno v:
Materials, Vol 14, Iss 24, p 7671 (2021)
The structural features and nanoindentation/tribological properties of 316 stainless steel fabricated by conventional rolling and laser-based powder bed fusion (LPBF) were comparatively investigated regarding the effect of surface-pulsed plasma treat
Externí odkaz:
https://doaj.org/article/05462dafac85438bb190d2901583ebde
Publikováno v:
Materials, Vol 14, Iss 20, p 6076 (2021)
In this work, the effects of various conditions of short-term rejuvenation heat treatment on room-temperature mechanical properties of long-term aged P92 boiler steel were investigated. Normalized and tempered P92 steel pipe was thermally exposed at
Externí odkaz:
https://doaj.org/article/97b75572146c48e39ec4bf43ea4e65eb
Autor:
Radka Gorejová, Renáta Oriňaková, Zuzana Orságová Králová, Matej Baláž, Miriam Kupková, Monika Hrubovčáková, Lucia Haverová, Miroslav Džupon, Andrej Oriňak, František Kaľavský, Karol Kovaľ
Publikováno v:
Materials, Vol 13, Iss 1, p 184 (2020)
Research in the field of biodegradable metallic scaffolds has advanced during the last decades. Resorbable implants based on iron have become an attractive alternative to the temporary devices made of inert metals. Overcoming an insufficient corrosio
Externí odkaz:
https://doaj.org/article/d5b131e4d8414185a38f62ba8f75442f
Publikováno v:
Acta Metallurgica Slovaca, Vol 20, Iss 1 (2014)
The paper is focused on the part of complex work dealing with verification of functionality of non-destructive technique of electrochemical noise applied on HDG steel sheets samples with different surface treatment, namely on samples to be treat with
Externí odkaz:
https://doaj.org/article/9b50fd7c870d41199bb75a3dd1bca92a
Autor:
Renáta Oriňáková, Miriam Kupková, Radka Gorejová, Matej Baláž, Monika Hrubovčáková, Karol Kovaľ, Tibor Sopcak, Z. Orságová Králová, Andrej Oriňák, Alexandra Kovalčíková, Martina Petráková, Iveta Maskaľová
Publikováno v:
Progress in Natural Science: Materials International, Vol 31, Iss 2, Pp 279-287 (2021)
Zn-Fe alloys have been extensively investigated in this study with a view to their application as biodegradable bone implants. Biogenic element zinc is a very appropriate metal because of the ideal degradation rate compared to those of Mg and Fe. Stu
Autor:
Jana Hovancová, Ivana Šišoláková, Karol Kovaľ, Renáta Oriňáková, Iveta Maskaľová, Veronika Niščáková, Andrej Oriňák
Publikováno v:
Electroanalysis. 33:347-354