Analysis of the number of deaths in Brazil between 2003 and 2020 and possible inferences about the COVID-19 pandemic and history of other diseases

Autor: LILIAN P. SOSMAN, ANDRÉS R.R. PAPA

Publikováno v: Anais da Academia Brasileira de Ciências, Vol 94, Iss 2 (2022)

Abstract The historical number of yearly deaths in Brazil has a growing tendency since always. In recent years were observed increases in this number beyond the tendency, probably associated to epidemics. In this work it was implemented an analysis o

Externí odkaz: https://doaj.org/article/a4557c8332f04d3e8610d30fc59c2b21

Photoluminescence, Photoacoustic and Structural Characteristics of Polycrystalline Zn2TiO4: Ni2+ Semiconductor

Autor: Alexandre R. Camara, A. López, N. Cella, Lilian P. Sosman, L. P. V. Gomes, S.S. Pedro

Publikováno v: Materials Research, Volume: 23, Issue: 3, Article number: e20200061, Published: 13 JUL 2020
Materials Research v.23 n.3 2020
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Vol 23, Iss 3 (2020)

This work presents the investigation, at room temperature, of Zn2TiO4samples containing Ni2+ ions as substitutional impurities. Samples with molecular formula Zn2(1-x)Ni2xTiO4, where x = 0.00, 0.0007, 0.001, 0.0013, 0.002 and 0.003, in which Zn2+ ion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64c4fc653efc244f56fe563605f86e5e
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000300214&lng=en&tlng=en

Photoluminescence of the Mg 2 Al 4 Si 5 O 18 -Al 2 O 3 -MgAl 2 O 4 -SiO 2 ceramic system containing Fe 3+ and Cr 3+ as impurity ions

Autor: S.S. Pedro, Lilian P. Sosman, A.R.R. Papa, A. López

Publikováno v: Optical Materials. 76:353-358

This work presents the results of photoluminescence, excitation and radiative decay time for a ceramic system containing Mg2Al4Si5O18-Al2O3-MgAl2O4-SiO2 with Fe3+ and Cr3+ as impurity ions. Emission data were obtained using several excitation wavelen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d02f014c318f638dc639c38d95890547
https://doi.org/10.1016/j.optmat.2017.12.056

Preparation, structural properties and tunable photoluminescence of LiZnNbO 4 :Co 2+

Autor: R. Dias Santos, A. López, Lilian P. Sosman, S.S. Pedro

Publikováno v: Journal of Luminescence. 185:55-60

In this research the compound LiZnNbO 4 :Co 2+ was investigated for the first time. The sample was produced by the wet chemical method. The crystallographic data were obtained by X-ray powder diffraction and the identification of the phases was obtai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9567a761366147fd397f6b047fdc511f
https://doi.org/10.1016/j.jlumin.2017.01.009

Photoluminescence of the manganese ions on Mg2Si2O6-Mg2SiO4 compounds

Autor: Lilian P. Sosman, A. López, I. C. S. Carvalho, P.N. Chiara, S.S. Pedro

Publikováno v: Journal of Luminescence. 182:39-44

The MgO-SiO 2 system with small quantities of MnCO 3 was produced by solid-state reaction at high temperature. The crystallographic phases and the amounts of components were determined by X-ray diffraction measurements. Emission and excitation spectr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7bf5c2cb90879cdbcbb4c664d9cf6b5
https://doi.org/10.1016/j.jlumin.2016.09.062