Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Przemysław Rogalski"'
Autor:
Tomasz N. Kołtunowicz, Piotr Gałaszkiewicz, Konrad Kierczyński, Przemysław Rogalski, Paweł Okal, Alexander D. Pogrebnjak, Vladimir Buranich, Maksym Pogorielov, Kateryna Diedkova, Veronika Zahorodna, Vitalii Balitskyi, Vladyslav Serhiienko, Ivan Baginskyi, Oleksiy Gogotsi
Publikováno v:
Energies, Vol 14, Iss 21, p 7123 (2021)
The paper examined Ti3C2Tx MXene (T—OH, Cl or F), which is prepared by etching a layered ternary carbide Ti3AlC2 (312 MAX-phase) precursor and deposited on a polycaprolactone (PCL) electrospun membrane (MXene-PCL nanocomposite). X-ray Diffraction a
Externí odkaz:
https://doaj.org/article/e414435de3ad4a01bb3c73ac6f0435bd
Publikováno v:
Energies, Vol 14, Iss 5802, p 5802 (2021)
Energies; Volume 14; Issue 18; Pages: 5802
Energies; Volume 14; Issue 18; Pages: 5802
The reference characteristics of complex permittivity of the transformers insulation solid component were determined for use in the precise diagnostics of the power transformers insulation state. The solid component is a composite of cellulose, insul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de82c433978576a96b74fb5ace234b60
https://www.mdpi.com/1996-1073/14/18/5802
https://www.mdpi.com/1996-1073/14/18/5802
Publikováno v:
Cellulose. 26:2969-2985
The paper presents a model of hopping conductivity at direct and alternating current, developed on the basis of the quantum phenomenon of electron tunnelling between neighbouring potential wells. The tunnelling takes place between neutral potential w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f129f00022f617a8f3d69847cedddcce
https://doi.org/10.1007/s10570-019-02268-5
https://doi.org/10.1007/s10570-019-02268-5
Autor:
Tomasz N. Koltunowicz, Pawel Zukowski, Vitalii Bondariev, Przemysław Rogalski, Konrad Kierczynski
Publikováno v:
Energies; Volume 14; Issue 1; Pages: 32
Energies, Vol 14, Iss 32, p 32 (2021)
Energies, Vol 14, Iss 32, p 32 (2021)
This article presents direct σDC and alternating σ(f) current conductivity measurements obtained by the frequency domain spectroscopy (FDS) method on cellulose-transformer oil–water nanoparticle composite with a moisture content of (5.0 ± 0.2)%
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9dd67f9cf575ea3819217d9dd5ee7dab
Autor:
Pawel Zukowski, Konrad Kierczynski, Przemyslaw Rogalski, Pawel Okal, Marek Zenker, Rafal Pajak, Marek Szrot, Pawel Molenda, Tomasz N. Koltunowicz
Publikováno v:
Energies, Vol 17, Iss 20, p 5164 (2024)
The study determines the frequency–temperature dependence of the conductivity of a moist solid insulation component of power transformers, impregnated with the innovative bio-oil NYTRO® BIO 300X, manufactured from plant-based raw materials. The re
Externí odkaz:
https://doaj.org/article/15837f296156418bac73a5a7446d7861
Publikováno v:
Energies, Vol 17, Iss 19, p 4777 (2024)
In this study, in order to determine the effect of matrices’ shape on the percolation threshold values, computer simulations were performed using the Monte Carlo method for a 200 × 200 square-shaped matrix and rectangular matrices containing the s
Externí odkaz:
https://doaj.org/article/6b80b098063c4f8f817813f69865612d
Autor:
Przemysław Rogalski
Publikováno v:
2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP).
The paper presents a measuring stand enabling measurements with the use of the Frequency Domain Spectroscopy method. The process of making a measuring sample consistent with the X-Y model of a power transformer is discussed. The results of measuremen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5852d4cdac48a207d9181d1cf6e7d81c
https://doi.org/10.1109/nap51477.2020.9309687
https://doi.org/10.1109/nap51477.2020.9309687
Autor:
Jan Subocz, Tomasz N. Koltunowicz, Przemysław Rogalski, Konrad Kierczynski, Marek Zenker, Pawel Zukowski
Publikováno v:
Energies, Vol 13, Iss 5511, p 5511 (2020)
Energies; Volume 13; Issue 20; Pages: 5511
Energies; Volume 13; Issue 20; Pages: 5511
This study investigates the frequency–temperature relations between the phase angle φ and admittance Y for composites of cellulose, synthetic ester, and water nanoparticles. We determined the activation energy value for the relaxation time of a ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f7d48ce4a760d58a5346ba4647e923e
https://www.mdpi.com/1996-1073/13/20/5511
https://www.mdpi.com/1996-1073/13/20/5511
Autor:
Miroslav Gutten, Marek Zenker, Daniel Korenciak, Pawel Zukowski, Konrad Kierczynski, Jan Subocz, Przemysław Rogalski
Publikováno v:
2020 International Conference on Diagnostics in Electrical Engineering (Diagnostika).
The article examined an temperature effect on the analysis for AC relaxation time of a dumped a material cellulose with synthetic ester and nanoparticles from water with a content of humidity of 5% from weight. It was established that in the range of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::326c63efc803119024f98f2927644ea6
https://doi.org/10.1109/diagnostika49114.2020.9214656
https://doi.org/10.1109/diagnostika49114.2020.9214656
Autor:
Jan Subocz, Milan Sebok, Tomasz N. Koltunowicz, Pawel Zukowski, Przemysław Rogalski, Konrad Kierczynski
Publikováno v:
Measurement. 185:110041
This paper describes precise tests of frequency–temperature relations of the phase shift angle and admittance of a reference sample of composite of cellulose and insulating oil with a moisture content of (5.0 ± 0.20)% by weight. A method of moistu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e207b9daea8d8230cbe385d324840e2a
https://doi.org/10.1016/j.measurement.2021.110041
https://doi.org/10.1016/j.measurement.2021.110041