Zobrazeno 1 - 10
of 139
pro vyhledávání: '"Steinar Raaen"'
Autor:
Yassine Benali, Daniela Predoi, Krzysztof Rokosz, Carmen Steluta Ciobanu, Simona Liliana Iconaru, Steinar Raaen, Catalin Constantin Negrila, Carmen Cimpeanu, Roxana Trusca, Liliana Ghegoiu, Coralia Bleotu, Ioana Cristina Marinas, Miruna Stan, Khaled Boughzala
Publikováno v:
Materials, Vol 17, Iss 15, p 3681 (2024)
The hydroxyapatite and copper-doped hydroxyapatite coatings (Ca10−xCux(PO4)6(OH)2; xCu = 0, 0.03; HAp and 3CuHAp) were obtained by the vacuum deposition technique. Then, both coatings were analyzed by the X-ray diffraction (XRD), scanning electron
Externí odkaz:
https://doaj.org/article/c3c75d843760417eb188fae4390a0d5a
Autor:
Carmen Steluta Ciobanu, Daniela Predoi, Simona Liliana Iconaru, Mihai Valentin Predoi, Krzysztof Rokosz, Steinar Raaen, Catalin Constantin Negrila, Nicolas Buton, Liliana Ghegoiu, Monica Luminita Badea
Publikováno v:
Materials, Vol 17, Iss 14, p 3404 (2024)
Infections related to orthopedic/stomatology surgery are widely recognized as a significant health concern. Therefore, the development of new materials with superior biological properties and good stability could represent a valuable alternative to t
Externí odkaz:
https://doaj.org/article/5cf52579c64d415c802df53cb4690ce6
Autor:
Magdalena Marny, Maciej Sowa, Alicja Kazek-Kęsik, Krzysztof Rokosz, Steinar Raaen, Patrick Chapon, Roman Viter, Roman Pshenychnyi, Wojciech Simka, Joanna Michalska
Publikováno v:
Materials, Vol 16, Iss 23, p 7400 (2023)
The paper presents the results of preliminary research on the possibility of synthesizing ZnO-TiO2 mixed coatings by plasma electrochemical oxidation (PEO). The aim of the work was to synthesize TiO2-ZnO mixed coatings on a titanium substrate from an
Externí odkaz:
https://doaj.org/article/66c41738d7254f7880b55360785ded98
Autor:
Steluta Carmen Ciobanu, Daniela Predoi, Mariana Carmen Chifiriuc, Simona Liliana Iconaru, Mihai Valentin Predoi, Marcela Popa, Krzysztof Rokosz, Steinar Raaen, Ioana Cristina Marinas
Publikováno v:
Polymers, Vol 15, Iss 23, p 4484 (2023)
In the present study, sage-coated zinc-doped hydroxyapatite was incorporated into a dextran matrix (7ZnHAp-SD), and its physico-chemical and antimicrobial activities were investigated. A 7ZnHAp-SD nanocomposite suspension was obtained using the co-pr
Externí odkaz:
https://doaj.org/article/6f5bd84621134e01ab663df727f7e95d
Autor:
Daniela Predoi, Carmen Steluta Ciobanu, Simona Liliana Iconaru, Steinar Raaen, Krzysztof Rokosz
Publikováno v:
Materials, Vol 16, Iss 12, p 4412 (2023)
Hydroxyapatite doped with magnesium and zinc in chitosan matrix biocomposites have great potential for applications in space technology, aerospace, as well as in the biomedical field, as a result of coatings with multifunctional properties that meet
Externí odkaz:
https://doaj.org/article/3b7a36582a694b8d89515110e6b7a818
Autor:
Xiaofeng Yu, Steinar Raaen
Publikováno v:
Molecules, Vol 28, Iss 6, p 2670 (2023)
Formation of graphene on Ru(0001) by exposure to ethylene and subsequent annealing has been studied by low-energy electron diffraction, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy. The stability of graphene/intercalat
Externí odkaz:
https://doaj.org/article/255dc506756e4fb5a395072781c44f2d
Autor:
Simona Liliana Iconaru, Carmen Steluta Ciobanu, Gabriel Predoi, Krzysztof Rokosz, Mariana Carmen Chifiriuc, Coralia Bleotu, George Stanciu, Radu Hristu, Steinar Raaen, Stefania Mariana Raita, Liliana Ghegoiu, Monica Luminita Badea, Daniela Predoi
Publikováno v:
Micromachines, Vol 13, Iss 10, p 1574 (2022)
In the present study, we report the development and characterization of composite layers (by spin coating) based on magnesium-doped hydroxyapatite in a chitosan matrix, (Ca10−xMgx(PO4)6(OH)2; xMg = 0, 0.08 and 0.3; HApCh, 8MgHApCh and 30MgHApCh). T
Externí odkaz:
https://doaj.org/article/221a85f7820c4973a7b9fdb721f70d90
Autor:
Daniela Predoi, Carmen Steluta Ciobanu, Simona Liliana Iconaru, Silviu Adrian Predoi, Mariana Carmen Chifiriuc, Steinar Raaen, Monica Luminita Badea, Krzysztof Rokosz
Publikováno v:
Materials, Vol 15, Iss 15, p 5372 (2022)
This is the first report regarding the effect of gamma irradiation on chitosan-coated magnesium-doped hydroxyapatite (xMg = 0.1; 10 MgHApCh) layers prepared by the spin-coating process. The stability of the resulting 10 MgHApCh gel suspension used to
Externí odkaz:
https://doaj.org/article/9a0a71bf64d54785966d1d5a56f3a165
Autor:
Krzysztof Rokosz, Tadeusz Hryniewicz, Sofia Gaiaschi, Patrick Chapon, Steinar Raaen, Łukasz Dudek, Winfried Malorny
Publikováno v:
Tehnički Vjesnik, Vol 26, Iss 1, Pp 128-134 (2019)
In the present paper, coatings obtained on CP Titanium Grade 2 samples by Plasma Electrolytic Oxidation (PEO) in electrolyte containing concentrated phosphoric acid H3PO4 with copper nitrate Cu(NO3)2∙3H2O, are studied with Scanning Electron Microsc
Externí odkaz:
https://doaj.org/article/4f4660e478f14c3ab5e63f5bceb36f40
Autor:
Steinar Raaen
Publikováno v:
Nanomaterials, Vol 11, Iss 8, p 2064 (2021)
Studies of adsorption of CO2 on nanoscopic surfaces are relevant for technological applications in heterogeneous catalysis as well as for sorption of this important greenhouse gas. Presently, adsorption of carbon dioxide on pure and oxidized thin sam
Externí odkaz:
https://doaj.org/article/305847cbf7e448dc8c0613c13694c4a2