Výsledky vyhledávání - "Jaqueline V. Gunha"

Characterization of oxyfluorotellurite glasses with TeO2–Li2O–ZnO–LiF composition

Autor: Andressa Novatski, Giulia de Souza Antero, Rafael Denkiewicz, Aloisi Somer, Anderson Gonçalves, Tasso O. Sales, Jaqueline V. Gunha, Carlos Jacinto, Robson Ferrari Muniz, Raouf El-Mallawany

Publikováno v: Ceramics International. 48:4302-4311

Oxyfluorotellurite glasses in the form of 60TeO2–(15–x)Li2O–25ZnO–xLiF, 65TeO2–(15–x)Li2O–20ZnO–xLiF (with x = 0, 5, 10, and 15 in mol %), and 65TeO2(20–x)Li2O–15ZnO–xLiF (x = 0, 5, 10, 15, and 20 in mol %) have been synthesized

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::de9ded8a71ca21349998f7ea1d143701
https://doi.org/10.1016/j.ceramint.2021.10.224

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A generalized Drude–Lorentz model for refractive index behavior of tellurite glasses

Autor: Carlos Jacinto, Andressa Novatski, V. S. Zanuto, Mauricio A. Ribeiro, D. T. Dias, Nelson G. C. Astrath, Anderson Gonçalves, Ervin K. Lenzi, Maike A. F. dos Santos, Jaqueline V. Gunha, Aloisi Somer

Publikováno v: Journal of Materials Science: Materials in Electronics. 30:16949-16955

An extension of Drude–Lorentz model based on the fractional approach was used to investigate quantitative measurement of refractive index as a function of wavelength of Tellurite glasses. Tellurite glass samples were synthesized by conventional mel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d9d4b946442c7d176b72a519c436cda
https://doi.org/10.1007/s10854-019-01696-0

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Raman gain coefficient of Er3+ doped TeO2–Li2O–ZnO glasses

Autor: Aloisi Somer, Nelson G. C. Astrath, Rosiane Antunes dos Santos, D. T. Dias, Anderson Gonçalves, V. S. Zanuto, Jaqueline V. Gunha, Andressa Novatski

Publikováno v: Journal of Materials Science: Materials in Electronics. 30:16917-16921

Tellurite glasses are good candidates for high-speed optical communications due to interesting properties and hence they present higher Raman cross section as compared to other glassy systems. In this work, tellurite glasses with 65TeO2-15Li2O-20ZnO

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::767d1407de6868b0569121cd69791a8d
https://doi.org/10.1007/s10854-019-01633-1

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Thermal and optical properties of lithium-zinc-tellurite glasses

Autor: Aloisi Somer, André Vitor Chaves de Andrade, R.L.S. Piazzetta, A.N. Medina, Nelson G. C. Astrath, Jaqueline V. Gunha, Andressa Novatski, Anderson Gonçalves, Raouf El-Mallawany, Ervin K. Lenzi

Publikováno v: Materials Chemistry and Physics. 231:150-158

(100-X-Y)TeO2-XLi2O-YZnO, X = 10, 15 and 20, Y = 0, 5, 10, 15, 20, 25 and 30 mol%, glasses have been prepared by the melt quenching technique. Density and molar volume have been identified for every glass sample. Differential Scanning Calorimetry (DS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e4bc75a19dc4d8a025f5cb84abe6e251
https://doi.org/10.1016/j.matchemphys.2019.03.078

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Luminescence and upconversion processes in Er3+-doped tellurite glasses

Autor: Anderson Gonçalves, G. A. S. Flizikowski, Nelson G. C. Astrath, Carlos Jacinto, V. S. Zanuto, A.N. Medina, Andressa Novatski, Aloisi Somer, Jaqueline V. Gunha, Gerson Kniphoff da Cruz, João Luis Gomes, F.L. Hegeto

Publikováno v: Journal of Luminescence. 201:110-114

This work presents a spectroscopic investigation of tellurite glasses with the composition 65TeO2-15Li2O-20ZnO doped with different concentrations of Er2O3. Optical absorption and emission spectroscopy were performed at room temperature to determine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::87dc89f307485bd509e02db9444ab28b
https://doi.org/10.1016/j.jlumin.2018.04.031

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Physicochemical, biological and release studies of chitosan membranes incorporated with Euphorbia umbellata fraction

Autor: Priscileila Colerato Ferrari, Andressa Novatski, Victor Emanuel Kubaski Petry, Jaqueline V. Gunha, Flávio Luís Beltrame, Bruno Rodrigo Minozzo, Bruna Mikulis Lemes, Aline da Silva Justo, José Carlos Rebuglio Vellosa, Luís Antônio Esmerino, Simone do R.F. Sabino

Publikováno v: Revista Brasileira de Farmacognosia, Vol 28, Iss 4, Pp 433-443 (2018)
Revista Brasileira de Farmacognosia v.28 n.4 2018
Revista Brasileira de Farmacognosia
Sociedade Brasileira de Farmacognosia (SBFgnosia)
instacron:SBFGNOSIA
Revista Brasileira de Farmacognosia, Vol 28, Iss 4, Pp 433-443
Revista Brasileira de Farmacognosia, Volume: 28, Issue: 4, Pages: 433-443, Published: AUG 2018

Formulations containing chitosan incorporated with methanolic fraction of Euphorbia umbellata (Pax) Bruyns, Euphorbiaceae, were studied aiming future applications of this new material as medicine. In order to investigate potential interactions betwee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::676d0b9932b9881e2ce2640b76f4f2c8
http://www.sciencedirect.com/science/article/pii/S0102695X17306270

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Thermo-structural analysis of TeO2–Li2O–MoO3 glasses

Autor: Aloisi Somer, Gerson Kniphoff da Cruz, João Luis Gomes, Anderson Gonçalves, Jaqueline V. Gunha, Andressa Novatski

Publikováno v: Journal of Thermal Analysis and Calorimetry. 134:1439-1445

This work discusses some new insights into the structural and thermal properties of the glass system $$\hbox {TeO}_{2}$$ – $$\hbox {Li}_{2}\hbox {O}$$ – $$\hbox {MoO}_{3}$$ . Glasses in the composition $$(80 - 2x)$$ $$\hbox {TeO}_{2}$$ − $$x\hb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::95c06483b12b79699a233baf9623ea56
https://doi.org/10.1007/s10973-018-7452-z

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Raman and photoacoustic spectroscopies of SnO2 thin films deposited by spin coating technique

Autor: Evaldo Toniolo Kubaski, D. T. Dias, Andressa Novatski, Regiane Gordia Drabeski, Sergio Mazurek Tebcherani, Jaqueline V. Gunha, Gelson B. de Souza

Publikováno v: Vibrational Spectroscopy. 109:103094

SnO2 thin films were grown on glass substrate using a spin-coating technique. The films grown in different layers and subjected to pressure-assisted heat treatment (PAHT) were characterized by Raman spectroscopy and Photoacoustic measurements. Raman

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24a26f1d032afc44f346e45feb4499e1
https://doi.org/10.1016/j.vibspec.2020.103094

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