Zobrazeno 1 - 10
of 67
pro vyhledávání: '"RA Medeiros"'
Autor:
RA Medeiros, Heloísa P. Macedo, Dulce Maria de Araújo Melo, Ângelo A.S. Oliveira, Marcus Antônio de Freitas Melo, Rebecca Araújo Barros do Nascimento, Tiago R. Costa
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 140:2673-2685
Mn-based solid oxygen carriers supported on MgAl2O4 were prepared by the microwave-assisted combustion method followed by wet impregnation of the active phase. The oxygen carriers were characterized by X-ray diffraction, temperature-programmed reduct
Autor:
Raquel Braga, Rebecca Araújo Barros do Nascimento, Heloísa P. Macedo, Gilvan Pereira de Figueredo, A. A. S. Oliveira, RA Medeiros, Dulce Maria de Araújo Melo
Publikováno v:
Cerâmica v.65 n.374 2019
Cerâmica (São Paulo. Online)
Universidade de São Paulo (USP)
instacron:USP
Cerâmica, Vol 65, Iss 374, Pp 180-184
Cerâmica, Volume: 65, Issue: 374, Pages: 180-184, Published: 06 JUN 2019
Cerâmica (São Paulo. Online)
Universidade de São Paulo (USP)
instacron:USP
Cerâmica, Vol 65, Iss 374, Pp 180-184
Cerâmica, Volume: 65, Issue: 374, Pages: 180-184, Published: 06 JUN 2019
In this work, zinc aluminate spinel powders were prepared by a fast, simple, eco-friendly and low-cost modified Pechini method using commercial gelatin as the organic precursor. The materials were calcinated at 600, 700 and 800 °C and characterized
Autor:
Dulce Maria de Araújo Melo, Michaela Wilhelm, Jan Ilsemann, Kurosch Rezwan, Heloisa P. Macedo, RA Medeiros
Publikováno v:
Microporous and Mesoporous Materials. 278:156-166
Nickel-containing hybrid ceramics were prepared by pyrolytic conversion from either methyl or methyl-phenyl polysiloxanes mixed with bistrimethoxysilylpropylamine (BisA) as a complexing agent and nickel salt. Materials with tailorable characteristics
Autor:
RA Medeiros, Dulce Maria de Araújo Melo, Guilherme Quintela Calixto, Marcus Antônio de Freitas Melo, Janduir Egito da Silva, Luiz Paulo de Carvalho, Renata Martins Braga
Publikováno v:
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice)
Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Scientific Reports
Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Scientific Reports
Brazil is a major producer of cotton, accounting for approximately 11% of world production with 64,519.67 thousand tons, behind only countries such as the United States, China and India. The cultivation of colored fber cotton has stood out in recent
Autor:
Heloísa P. Macedo, V. R. M. Melo, Dulce Maria de Araújo Melo, Marcus Antônio de Freitas Melo, Gustavo Torres Moure, RA Medeiros, Juan Adánez, Iñaki Adánez-Rubio
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Digital.CSIC. Repositorio Institucional del CSIC
instname
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Digital.CSIC. Repositorio Institucional del CSIC
instname
16 Figures, 4 Tables.-- © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Double perovskites La2-xNiO4-δ doped with Ca and Ba were synthesized via microwave-as
Double perovskites La2-xNiO4-δ doped with Ca and Ba were synthesized via microwave-as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d380baf82d54a2a2112062e7fb86a1e
https://repositorio.ufrn.br/handle/123456789/45274
https://repositorio.ufrn.br/handle/123456789/45274
Autor:
Dulce Maria de Araújo Melo, Maria de Fátima Dantas e Silva, Marcus Antônio de Freitas Melo, Heloísa P. Macedo, RA Medeiros, Gilvan Pereira de Figueredo, R.C. Santiago
Publikováno v:
Materials Science Forum. 930:562-567
The aim of this work is to use a residue from shale gas production, known as retorted shale (RS), as an alternative material for processes of sulfur adsorptive desulfurization in liquid fuels such as gasoline or diesel. Therefore, retorted shale samp
Autor:
RA Medeiros, Renata Martins Braga, Marcus Antônio de Freitas Melo, Heloísa P. Macedo, Ângelo A.S. Oliveira, Dulce Maria de Araújo Melo, Gilvan Pereira de Figueredo, José Manuel Rivas Mercury
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
A systematic and comparative study was made to determine the influence of perovskite-type LaAlO3 and commercial α-Al2O3 on the performance of nickel-based catalysts in dry reforming of methane (DRM). The perovskite-type LaAlO3 was selected due to it
Autor:
Gustavo Torres Moure, Juan A. C. Ruiz, Marcus Antônio de Freitas Melo, Dulce Maria de Araújo Melo, Heloísa P. Macedo, V. R. M. Melo, RA Medeiros, Renata Martins Braga
Publikováno v:
International Journal of Hydrogen Energy. 43:1406-1414
La2-xMxNiO4 perovskite oxygen carriers (OC) doped with Ca and Sr (x = 0.05 and 0.20) in the site La were prepared by microwave assisted combustion method and calcined at 800 °C for 2 h. A reactivity study was carried out applying pulses of H2, O2 an
Autor:
Dulce Maria de Araújo Melo, Fernando V. Maziviero, Rebecca B.A. Nascimento, Tomaz R. Araújo, Marcus Antônio de Freitas Melo, RA Medeiros, Ângelo A.S. Oliveira
Publikováno v:
Materials Science in Semiconductor Processing. 134:106014
Cerium aluminate is a perovskite type that presents AmBnO3 that has interesting physical, morphological properties and crystalline structures; however it has not been deeply studied when synthesized by microwave-assisted self-combustion specifically.
Autor:
Dener da Silva Albuquerque, RA Medeiros, Fernando V. Maziviero, Juan Alberto Chaves Ruiz, Dulce Maria de Araújo Melo, Fabíola Correia de Carvalho, Romário Cezar Pereira da Costa
Publikováno v:
Research, Society and Development; Vol. 10 No. 12; e514101220596
Research, Society and Development; Vol. 10 Núm. 12; e514101220596
Research, Society and Development; v. 10 n. 12; e514101220596
Research, Society and Development
Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
Research, Society and Development; Vol. 10 Núm. 12; e514101220596
Research, Society and Development; v. 10 n. 12; e514101220596
Research, Society and Development
Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
Chemical looping combustion (CLC) processes have been shown to be promising and effective in reducing CO2 production from the combustion of various fuels associated with the growing global demand for energy, as it promotes indirect fuel combustion th