Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Marcelo O. Pereira"'
Autor:
Valter S. Felix, Ana L. Oliveira, Marcelo O. Pereira, Carlos A. Pérez, Fabrício Lopes e Silva, Douglas S. R. Ferreira, Cristiano Carvalho, Douglas Galante, Renato Pereira de Freitas, André Rocha Pimenta
Publikováno v:
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 246
In this work, a painting suspected of counterfeiting was analyzed using the synchrotron-based scanning macro X-ray fluorescence (MA-XRF) technique. The canvas has erasures including a signature erasure; however, some visible numbers indicate that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45257e56417a63f01a57c3aa80b561d6
https://pubmed.ncbi.nlm.nih.gov/32987269
https://pubmed.ncbi.nlm.nih.gov/32987269
Autor:
Marilia Garcia Diniz, Marcelo O. Pereira, Fabrício Lopes e Silva, Douglas S. R. Ferreira, Renato Pereira de Freitas, Ana L. Oliveira, Ulisses L. Mello, André Rocha Pimenta, Valter S. Felix, Cristiano Carvalho
Publikováno v:
Radiation Physics and Chemistry. 151:198-204
In this paper, a European black Japanned piece of furniture (dated to approximately 1860) was analyzed by XRF, Raman spectroscopy and FT-IR techniques. The analyses detected pigments such as vermilion/cinnabar [HgS], Massicot [PbO], lamp black [C] an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1105192001cb6b53ad988c1be0d50960
https://doi.org/10.1016/j.radphyschem.2018.06.036
https://doi.org/10.1016/j.radphyschem.2018.06.036
Autor:
Marcos André Torres de Souza, Filipe André do Nascimento Coelho, Marcelino J. Anjos, Marcelo O. Pereira, Valter S. Felix, Renato Pereira de Freitas
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 193:432-439
This study used Raman, FT-IR and XRF spectroscopy and SEM to analyze ceramic fragments dating from the 19th century, excavated from an old farm in the municipality of Pirenopolis, Goias, Brazil. The results show that the samples were produced in an o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfc301c93c921338c7058e2233c42adb
https://doi.org/10.1016/j.saa.2017.12.047
https://doi.org/10.1016/j.saa.2017.12.047
Autor:
Renato Pereira de Freitas, Ricardo Tadeu Lopes, Valter Souza Felix, Paula J.M. Aranha, Pedro C.S. Heringer, Marcelo O. Pereira, Marcelino J. Anjos
Publikováno v:
Applied Radiation and Isotopes. 166:109409
In this work, 960 reis coins from the period when Brazil was a colony of Portugal were analyzed using the x-ray fluorescence (XRF) spectrometry. The history of these coins, dated between the end of the 17th century and the beginning of the 19th centu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd69bf4b0e4edc0f26c6773fad977cb7
https://doi.org/10.1016/j.apradiso.2020.109409
https://doi.org/10.1016/j.apradiso.2020.109409
Autor:
Ana L. Oliveira, T.A. Lima, André Rocha Pimenta, Douglas S. R. Ferreira, C. Calza, Renato Pereira de Freitas, Rafaela Tavares Batista, P.C.L. Brito, Iohanna M. Ribeiro, Marcelino J. Anjos, Ricardo Tadeu Lopes, Valter Souza Felix, Marcelo O. Pereira, Elicardo A.S. Gonçalves
Publikováno v:
Vibrational Spectroscopy. 87:111-115
In this paper, nine beads from excavations in the Valongo Wharf, located in the harbor area of Rio de Janeiro, Brazil that were utilized as ornaments by Africans and Afrodescendants during the 19th century were analyzed by Raman and X-Ray Fluorescenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86233ec8f58629fe51e1602b9bfe70c8
https://doi.org/10.1016/j.vibspec.2016.09.021
https://doi.org/10.1016/j.vibspec.2016.09.021
Autor:
Valter S. Felix, Ana L. Oliveira, Iohanna M. Ribeiro, Ricardo Tadeu Lopes, Douglas S. R. Ferreira, André Rocha Pimenta, Renato Pereira de Freitas, R. V. G. Pereira, Marcelo O. Pereira, C. Calza
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 154:67-71
In this study, samples were taken from the sculpture of Our Lady of Sorrows and analyzed by Raman spectroscopy and FT-IR. This sculpture has been dated to the early eighteenth century. Samples were also examined using optical microscopy and Energy Di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2b2beab9729c274a40d58122f76b45d
https://doi.org/10.1016/j.saa.2015.10.013
https://doi.org/10.1016/j.saa.2015.10.013
Autor:
Ramon Silva dos Santos, Ana L. Oliveira, Valter S. Felix, Marcelo O. Pereira, André Rocha Pimenta, Marcelino J. Anjos, Renato Pereira de Freitas, Elicardo A.S. Gonçalves, Douglas S. R. Ferreira, Leandro de Oliveira Pereira
Publikováno v:
Microchemical Journal. 149:104020
In this work, microsamples extracted from a Saint John the Evangelist polychrome sculpture, dating from the beginning of the eighteenth century and found in Rio de Janeiro, Brazil, were analyzed with micro-XRF and complimentary X-ray Fluorescence (XR
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b77dbcff3dda1b82a8d73139485094e0
https://doi.org/10.1016/j.microc.2019.104020
https://doi.org/10.1016/j.microc.2019.104020
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 280:39-44
The aim of this work was to develop a method to correct the absorbed radiation (the mass attenuation coefficient curve) in low energy (E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8154b881417ef72c47c11ea48ab7666a
https://doi.org/10.1016/j.nimb.2012.02.032
https://doi.org/10.1016/j.nimb.2012.02.032
Autor:
Ricardo Tadeu Lopes, C. Calza, Francisco Gerson Araújo, Marcelino J. Anjos, Marcelo O. Pereira
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 269:707-709
The Paraiba do Sul River is located in a strategic region between the most important urban and industrial centers of Brazil. In the last years, an increase in the water pollution has been reported, caused by the untreated domestic sewerage of the inh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91ce0261a5488fb18a1672922e535272
https://doi.org/10.1007/s10967-006-0290-7
https://doi.org/10.1007/s10967-006-0290-7
Publikováno v:
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 68(4-5)
In this work were characterized the palettes of some of the most representative Brazilian painters from the XIX century: Eliseu Visconti, Almeida Junior, Rodolfo Amoedo, Henrique Bernardelli, Rafael Frederico, Modesto Brocos, Augusto Rodrigues Duarte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87145667e3033729cf4d44aeeb790cf7
https://pubmed.ncbi.nlm.nih.gov/19897379
https://pubmed.ncbi.nlm.nih.gov/19897379