Zobrazeno 1 - 10
of 23
pro vyhledávání: '"M. R. P. Santos"'
Autor:
B. A. M. Figueira, R. S. Angélica, M. L. Costa, J. M. R. Mercury, M. R. P. Santos, H. Poellmann
Publikováno v:
Cerâmica, Vol 62, Iss 362, Pp 128-132
Resumo O presente trabalho descreve um estudo comparativo das propriedades química e mineralógica de birnessita natural (BIR-AZ) proveniente da mina do Azul (Província Mineral de Carajás, Brasil) e seu análogo sintético obtido pelo método sol-
Externí odkaz:
https://doaj.org/article/fbf181800c424cb2a6f5abe807f30cff
Autor:
Carolina R. Inácio, Gabriel S. Nascimento, Ana Paula M. Barboza, Bernardo R. A. Neves, Ângela Leão Andrade, Gabriel M. Teixeira, Lucas R. D. Sousa, Paula M. de A. Vieira, Kátia M. Novack, Viviane M. R. dos Santos
Publikováno v:
Polymers, Vol 15, Iss 11, p 2513 (2023)
In recent years, polymeric materials have been gaining prominence in studies of controlled release systems to obtain improvements in drug administration. These systems present several advantages compared with conventional release systems, such as con
Externí odkaz:
https://doaj.org/article/7e45daaa786d41fbbf3eed091ce2b12f
Publikováno v:
Revista SODEBRAS. 17:56-66
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::209d57a5bbb2f71bfd8db8e77d48eba2
https://doi.org/10.29367/issn.1809-3957.17.2022.195.56
https://doi.org/10.29367/issn.1809-3957.17.2022.195.56
Autor:
Miguel Iglesias, Silvana Mattedi, J. M. Goenaga, B. M. R. P. Santos, Rafael Gonzalez-Olmos, J.M. Resa
Publikováno v:
Physics and Chemistry of Liquids. 48:257-271
This work presents experimental liquid densities and ultrasonic velocities for a collection of substituted aromatic compounds (isobutylbenzene, 1,3,5-trimethylbenzene, butylbenzene, isopropylbenzene, p-xylene, m-xylene and o-xylene) at the range of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d183e146c1699f8be5960233789f535
https://doi.org/10.1080/00319100902839145
https://doi.org/10.1080/00319100902839145
Publikováno v:
Physics and Chemistry of Liquids. 46:223-237
This article reports experimental data of density and ultrasonic velocity at the range from 278.15 to 323.15 K and atmospheric pressure of ethers used as additives in fuels (methyl tert-butyl ether ethyl tert-butyl ether, tert-amyl ether and diisopro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96acba3de7ce39b083089beb40f1e816
https://doi.org/10.1080/00319100701660411
https://doi.org/10.1080/00319100701660411
Autor:
Alejandro Ayala, M. J. S. da Rocha, Antonio Sergio Bezerra Sombra, Pierre Basílio Almeida Fechine, J.C. Góes, A.S. de Menezes, M. R. P. Santos, F. M. M. Pereira, J. M. A. Almeida
Publikováno v:
Journal of Materials Science: Materials in Electronics. 19:973-980
In this article we will study the structural and electrical properties of PbTiO3 (PTO) screen-printed thick films. These properties can change with synthetic routes employed for synthesis of PTO. The ceramic powder has been synthesized by mechanical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cea310bf16a2c89f3a9b9f6ddb7e50a6
https://doi.org/10.1007/s10854-007-9429-8
https://doi.org/10.1007/s10854-007-9429-8
Autor:
Francisco Nivaldo Aguiar Freire, Igor F. Vasconcelos, Pierre Basílio Almeida Fechine, M. R. P. Santos, R. S. T. M. Sohn, F. M. M. Pereira, H.H.B. Rocha, Antonio Sergio Bezerra Sombra
Publikováno v:
Journal of Materials Science. 43:75-82
A study of the structural characteristics of the composites [Pb(Fe0.5Nb0.5)O3(PFN)]x-[Cr0.75Fe1.25O3(CRFO)]100−x (x = 0 (CRFO100), 10, 50, 90, 100) was performed in this work. The compounds PFN100 and CRFO100 were prepared by conventional solid-sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cca785fde71f72d661c5a4f6534db5b7
https://doi.org/10.1007/s10853-007-2091-y
https://doi.org/10.1007/s10853-007-2091-y
Autor:
F. M. M. Pereira, K. D. A. Sabóia, M. R. P. Santos, Pierre Basílio Almeida Fechine, Antonio Sergio Bezerra Sombra, Francisco Nivaldo Aguiar Freire
Publikováno v:
Polymer Composites. 28:771-777
In this paper, we did a study of the effect of the presence of BIT (Bi4Ti3O12) in the dielectric and optical properties of the CaCu3Ti4O12 (CCTO) thick films. The films were prepared by the solid sate procedure. Mechanical alloying followed by the so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5b405c9833a6da2bdc486734384aa6a
https://doi.org/10.1002/pc.20347
https://doi.org/10.1002/pc.20347
Autor:
H.H.B. Rocha, F. M. M. Pereira, Antonio Sergio Bezerra Sombra, A. G. Pinheiro, M. R. P. Santos
Publikováno v:
Journal of Materials Science. 42:2112-2120
A study of the effect of the presence of BIT (Bi4Ti3O12) in the dielectric and optical properties of the CaCu3Ti4O12 (CCTO) is presented. The samples were prepared by the solid state procedure. Mechanical alloying followed by the solid state procedur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3015b64643cba84dd38d86768d1ef89
https://doi.org/10.1007/s10853-006-1190-5
https://doi.org/10.1007/s10853-006-1190-5
Autor:
Antonio Sergio Bezerra Sombra, Ricardo Jiménez, Pierre Basílio Almeida Fechine, F. M. M. Pereira, M. R. P. Santos, Ana Fabíola Leite Almeida, Francisco Nivaldo Aguiar Freire, J. Mendiola
Publikováno v:
Materials Chemistry and Physics. 96:402-408
In this work, we report electrical measurements of CaCu3Ti4O12 (CCTO) and (BaTiO3–barium titanate, BTO) thick films. The dielectric constant (K) measurements shows that the BTO thick film present a higher K compared to CCTO compound, in the range o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::267a64bc0a8472d0534214bf2f64ee5b
https://doi.org/10.1016/j.matchemphys.2005.07.030
https://doi.org/10.1016/j.matchemphys.2005.07.030