Zobrazeno 1 - 10
of 60
pro vyhledávání: '"ARAÚJO, JOSÉ HUMBERTO"'
Autor:
de Brito, Alex Soares, Valerio-Cuadros, Marlon Ivan, Huaman, Noemi Raquel Checca, de Melo, Maurício Antônio Custódio, Barco, Reginaldo, Ivashita, Flávio Francisco, de Araújo, José Humberto, Torres, Marco Antonio Morales, Paesano, Andrea, Jr.
Publikováno v:
In Journal of Alloys and Compounds Communications September 2024 3
Autor:
de Brito, Alex Soares, Oliveira, Aline A., Valerio-Cuadros, Marlon Ivan, Tupan, Lilian Felipe S., Gualdi, Alexandre José, Barco, Reginaldo, Ivashita, Flávio F., de Araújo, José Humberto, Torres, Marco Antonio M., Paesano, Andrea, Jr.
Publikováno v:
In Journal of Alloys and Compounds 30 June 2024 990
Akademický článek
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Akademický článek
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Publikováno v:
Materials Research, Vol 7, Iss 2, Pp 359-361 (2004)
The effect of heat treatment on illite in air at temperatures ranging from 750 to 1150 °C was studied using the Mössbauer effect in 57Fe. The dependence of the Mössbauer parameters and relative percentage of the radiation absorption area was measu
Externí odkaz:
https://doaj.org/article/224c2180ec004107b3316228dae058d5
Autor:
Silva Júnior, José Pedro, Silva, Régia Pereira, Cazuza, Elio Pessoa, Tenório, Ricardo Bruno de Araújo, Borba, Gilvan Luiz, Mendes, David, Oliveira, Anderson Luiz Pinheiro de, Araújo, José Humberto de, Alcântara, Maurício Lima de
Publikováno v:
Revista de Geociências do Nordeste; v. 6 n. 1 (2020); 10-17
Revista de Geociências do Nordeste
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Revista de Geociências do Nordeste
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
The terrestrial equatorial tropopause is generally analyzed as a region of modest temperature variations and defined only as an interface between the troposphere and the stratosphere. However, recent works has suggested that the tropopause may be a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::f091df95e16853c52d9c3b45d6bced9c
https://periodicos.ufrn.br/revistadoregne/article/view/18323
https://periodicos.ufrn.br/revistadoregne/article/view/18323
Autor:
Araújo, José Humberto de, Pimentel, Patrícia Mendonça, Dutra, J. L. S., Lima, A. C., Bagnato, Osmar Roberto, Costa, Asenete Frutuoso, Oliveira, Rosane Maria Pessoa Betanio
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
The rare-earth orthoferrites (LnFeO3) are promising materials for various applications, such as chemical sensors, cathode for SOFC, catalysts, among others. In general, these oxides are synthesized at temperatures higher than 700 °C. In this work, n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::cd78a0c9db8fe8081371df5abf3c6d0c
https://repositorio.ufrn.br/jspui/handle/123456789/29401
https://repositorio.ufrn.br/jspui/handle/123456789/29401
Akademický článek
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Autor:
Araújo, José Humberto de, Soares, João Maria, Galdino, V.B., Conceição, Ozivam Lopes de Aquino, Torres, Marco Antonio Morales, Machado, Fernando L. A.
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Core/shell nanoparticles of CoFe2O4=CoFe2 were prepared by reducing nanoparticles of CoFe2O4 under hydrogen atmospheres. The structure, morphology and room temperature magnetization of the core/ shell nanoparticles were analyzed by X-ray diffraction,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::01475063a39267c51f2115d4225ce556
https://repositorio.ufrn.br/jspui/handle/123456789/29364
https://repositorio.ufrn.br/jspui/handle/123456789/29364
Autor:
Araújo, José Humberto de, Pimentel, Patrícia Mendonça, Oliveira, Rosane Maria Pessoa Betânio, Oliveira, Filipe Silva, Bagnato, Osmar Roberto, Melo, Dulce Maria de Araújo
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
The main purpose of this work was to obtain Sm-Sr nickelates nanoparticles with Ruddelsden-Popper type structuresobtained by a simple process such as gelatin synthesis. The powders were calcinated at 900 ºC and characterized by X-ray diffraction,the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::a478d7bcdf0349533b67993edeb2034c
https://repositorio.ufrn.br/jspui/handle/123456789/29359
https://repositorio.ufrn.br/jspui/handle/123456789/29359