Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Peter Ondrejka"'
Autor:
Peter Ondrejka
Publikováno v:
Geologické práce. Správy, Vol 137, Pp 47-62 (2021)
The presented work summarizes the findings of long-term monitoring of the groundwater level in our territory. By solving the geological task Partial monitoring system Geological factors (PMS GF), in addition to direct results, consisting of data on t
Externí odkaz:
https://doaj.org/article/a8b97270a22f42b3bf17fadcf076ca54
Autor:
Peter Ondrejka, Michaela Sojková, Valerii Kotok, Patrik Novák, Ivan Hotovy, Martin Kemény, Miroslav Mikolášek
Publikováno v:
Materials Research Express, Vol 10, Iss 6, p 065508 (2023)
Nickel-based sulfides (particularly NiS _2 ) are regarded as promising materials for highly efficient electrochemical generation and storage devices. The conventional fabrication methods of nanostructured NiS _X electrodes involve several complex ste
Externí odkaz:
https://doaj.org/article/18d60dc3410a46f5b6b21a9c6283ea42
Publikováno v:
Batteries, Vol 9, Iss 1, p 33 (2023)
Lithium-ion (Li-ion) batteries with Ni-based cathodes are leading storage technology in the fields of electric vehicles and power-grid applications. NCA (LiNiCoAlO2) batteries are known for their troublesome degradation tendencies, and this susceptib
Externí odkaz:
https://doaj.org/article/5bcba06b277f488a9f63fd83175318bb
Autor:
Miroslav Mikolasek, Peter Ondrejka, Filip Chymo, Patrik Novak, Ladislav Harmatha, Vlastimil Rehacek, Ivan Hotovy
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 16, Iss 3, Pp 367-373 (2018)
Potentiostatic electrodeposition conducted at various deposition voltages from lactate-stabilized copper sulfate electrolyte was used for preparation of Cu2O layers for Photoelectrochemical (PEC) production of hydrogen. A novel approach based on an a
Externí odkaz:
https://doaj.org/article/eb191ffe5d0d471f8c1463ce50242241
Publikováno v:
Geosciences, Vol 7, Iss 3, p 87 (2017)
Multi-temporal synthetic aperture radar interferometry techniques (MT-InSAR) are nowadays a well-developed remote sensing tool for ground stability monitoring of areas afflicted by natural hazards. Its application capability has recently been emphasi
Externí odkaz:
https://doaj.org/article/7d27c421e7ef4c028dee9ce8db8141f5
Autor:
Peter Ondrejka
Publikováno v:
Envigogika, Vol 6, Iss 1 (2011)
Žijem v jednej z 650 000 tisíc domácností na Slovensku, zasadených v kultúrnej krajinepanelových sídlisk. Pokiaľ teda túto krajinu nepovažujeme za vzácne dedičstvo hodné konzervácie, vyvstáva úloha ich regenerácie v súlade so zása
Externí odkaz:
https://doaj.org/article/335010354b394117ab0f8bdc11a0233b
Autor:
Valerii Kotok, Vadym Kovalenko, Miroslav Mikolasek, Peter Ondrejka, Oleksandra Zima, Inna Anataichuk, Dmitriy Vodopyan, Kostyantyn Sukhyy
Publikováno v:
Eastern-European Journal of Enterprise Technologies. 3:58-65
The cost of electrochromic “smart” windows ranges from 200–800USD/m2. The high cost is determined by the small volume of production and the high cost of vacuum methods for applying device layers. The development of other methods could lead to l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::976fc91f2bf80b7caba78699f25b23a3
https://doi.org/10.15587/1729-4061.2022.259329
https://doi.org/10.15587/1729-4061.2022.259329
Autor:
Kristína Hušeková, Prangya Parimita Sahoo, Matej Mičušík, Karol Fröhlich, Martin Kemény, Ján Šoltýs, Ladislav Harmatha, Miroslav Mikolášek, Edmund Dobročka, Peter Ondrejka
Publikováno v:
ACS Applied Energy Materials. 4:11162-11172
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b110945ab1ddec8fe143929c579b299
https://doi.org/10.1021/acsaem.1c02021
https://doi.org/10.1021/acsaem.1c02021
Publikováno v:
Journal of Electrical Engineering. 72:256-261
In this paper, disulfides WS2 and MoS2 were successfully prepared using thermal decomposition and utilised for fabrication of supercapacitor- and water splitting electrodes. Both, energy storage and conversion performances of these electrodes were co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08db926a27704af23510e832f6957c0c
https://doi.org/10.2478/jee-2021-0035
https://doi.org/10.2478/jee-2021-0035
Autor:
Ladislav Harmatha, Peter Ondrejka, Filip Chymo, Karol Fröhlich, Martin Kemény, Kristína Hušeková, Ivan Hotovy, Miroslav Mikolášek
Publikováno v:
Journal of Electrical Engineering. 72:203-207
This paper is dedicated to preparation and analysis of metal insulator semiconductor (MIS) photoanode with a metal organic chemical vapor deposited RuO2 layer and TiO2 protection layer for photoelectrochemical water splitting. It is shown that utiliz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::201afdd83be01c0f67ddd2fc78c76e94
https://doi.org/10.2478/jee-2021-0028
https://doi.org/10.2478/jee-2021-0028