Výsledky vyhledávání - "Iwona Grelowska"

Physical, optical, thermal, and gamma-ray shielding features of fluorotellurite lithiumniobate glasses: TeO2-LiNbO3-BaO-BaF2-La2O3

Autor: El Sayed Yousef, F. Elmasry, F.I. El-Agawany, N. Elkhoshkhany, Iwona Grelowska, Y.S. Rammah, Manuela Reben

Publikováno v: Journal of Materials Science: Materials in Electronics. 32:3743-3752

Novel series of fluorotellurite lithium niobate glasses with compositions TeO2–LiNbO3–BaO–BaF2–La2O3 coded as Pr3, Pr4, Pr5, Pr6, and Pr7 were fabricated using the traditional process of quenching the melt. The density of the fabricated glass

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::48735b2de2aad231309be176e4b99845
https://doi.org/10.1007/s10854-020-05119-3

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Improvement of Gamma Radiation Shielding Features for Fluorophosphate Glasses Doping with Sm2O3 (PZBKNA)

Autor: M. Saad, I. S. Yaha, El Sayed Yousef, H. Almohiy, Iwona Grelowska, Manuela Reben, Y.M. AbouDeif

Publikováno v: Journal of Nanoelectronics and Optoelectronics. 15:1374-1380

This research reported on the radiation safety characteristics of doped fluorophosphate glasses with heavy rare earth lanthanide (Sm2O3) in the composition 40P2O5/30ZnO/20BaF2/3.8K2TeO3/1.2Al2O3/5.0Nb2O5/30000 ppm Sm2O3 and 40P2O5/30ZnO/20BaF2/3.8K2T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b7405e1b29372a7fb8b5d5b6592512e2
https://doi.org/10.1166/jno.2020.2858

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Optically transparent glass modified with metal oxides for X-rays and gamma rays shielding material

Autor: El Sayed Yousef, Manuela Reben, Mohammed S. Alqahtani, Hesham Afifi, Khalid I Hussein, Iwona Grelowska, I. S. Yaha, Heba Y. Zahran

Publikováno v: Journal of X-ray science and technology. 29(2)

BACKGROUND: Metal oxide glass composites have attracted huge interest as promising shielding materials to replace toxic, heavy, and costly conventional shielding materials. OBJECTIVE: In this work, we evaluate shielding effectiveness of four novel te

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d15333eeebeb0bb52955c6ebe7e04f4e
https://pubmed.ncbi.nlm.nih.gov/33579888

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Spectroscopy studies of TiO2/carbon nanotubes nanocomposite layers synthesized by the sol-gel method

Autor: Magdalena Kwaśny, Marek Nocuń, Iwona Grelowska, Sławomir Kwaśny

Publikováno v: Journal of Molecular Structure. 1167:194-199

Titanium dioxide in the form of anatase is known to be a good photocatalyser but catalytic properties strongly depend on TiO2 grain size, morphology and surface area of thin film. The aim of this study was to evaluate influence of carbon nanotube add

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7f5352928815a2240fd109fe6f5a81f9
https://doi.org/10.1016/j.molstruc.2018.04.095

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Spectroscopic properties of Er3+-doped fluorotellurite glasses containing various modifiers

Autor: Hamed Algarni, Bożena Burtan-Gwizdała, El Sayed Yousef, Iwona Grelowska, Manuela Reben, Natalia Nosidlak, Radosław Lisiecki, Jan Cisowski

Publikováno v: Optical Materials. 73:509-516

We have investigated the optical and spectroscopic properties of new Er 3+ -doped fluorotellurite glasses with the basic molar composition 75%TeO 2 -10%P 2 O 5 -10%ZnO-5%PbF 2 , modified by replacing 5%TeO 2 by four various metal oxides, namely MgO,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f7dda109d9ae3258595ce89aae1a17a
https://doi.org/10.1016/j.optmat.2017.09.001

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Different modifier oxides effect on the photoluminescence and photoinduced piezooptics of Er3+-doped fluorotellurite glasses

Autor: El Sayed Yousef, A.M. El-Naggar, Manuela Reben, G. Lakshminarayana, I.V. Kityk, Iwona Grelowska, Michal Piasecki, A.A. Albassam

Publikováno v: Journal of Materials Science: Materials in Electronics. 28:8969-8975

Novel fluorotellurite glasses with composition 70TeO2·5MxOy·10P2O5·10ZnO·5PbF2 (mol %) containing 600 ppm Er2O3, where MxOy = (MgO, PbO, Bi2O3, Nb2O5, TiO2, BaO, WO3, SrO, CdO) have been prepared using the conventional melt-quenching method. Stud

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1af72080ddeeca9e2c7765f5fad80ca6
https://doi.org/10.1007/s10854-017-6627-x

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MIKE: a new computational tool for investigating radiation, optical and physical properties of prototyped shielding materials

Autor: Hamed Algarni, Iwona Grelowska, Heba Y. Zahran, Khalid I Hussein, Mohammed S. Alqahtani, Manuela Reben, El Sayed Yousef, I. S. Yaha

Publikováno v: Journal of Instrumentation. 16:T07004

The development of new, advanced shielding materials has attracted great interest among scientists and engineers. Recently, various shielding materials have been developed, which could replace the toxic, heavy, and costly conventional shielding mater

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea7b4756a3cc8527ac963da10bc06b68
https://doi.org/10.1088/1748-0221/16/07/t07004

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Structural and thermal studies of modified silica-strontium-barium glass from CRT

Autor: Zbigniew Olejniczak, M. Kosmal, Paweł Pichniarczyk, Iwona Grelowska, Manuela Reben, Maciej Sitarz

Publikováno v: Journal of Molecular Structure. 1126:265-274

Glasses were prepared by conventional melting method from 100 g batches. The influence of alumina and calcium oxide on the crystallization process of silica-strontium-barium glass from Cathode Ray Tube (CRT) were studied by means of 27 Al MAS NMR and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bac034bfeaa1d2c9a1ef8125a04c891d
https://doi.org/10.1016/j.molstruc.2016.01.039

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Structural and optical study of tellurite–barium glasses

Autor: A. Knapik, Maciej Sitarz, El Sayed Yousef, Bożena Burtan, Iwona Grelowska, Jan Cisowski, Magdalena Dudek, Manuela Reben

Publikováno v: Journal of Molecular Structure. 1126:219-225

The goal of this work was to determine the effect of barium oxide on the structural, thermal and optical properties of the TeO 2 –BaO–Na 2 O (TBN) and TeO 2 –BaO–WO 3 (TBW) glass systems. Raman spectra allow relating the glass structure and v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5900e2e83ae7ef966739c58434c5023c
https://doi.org/10.1016/j.molstruc.2016.01.034

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