Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Celmy Maria B. de Menezes Barbosa"'
Autor:
Lourdes Cristina Lucena Agostinho Jamshidi, Luciano Nascimento, Reza Jamshidi Rodbari, Celmy Maria B. de Menezes Barbosa
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 37, Iss 1, Pp 99-106 (2016)
Características estruturais, morfológicos e fases existente na liga quasicristalina com composições nominal de Al65Cu20Fe15 foram investigados por difração de raios-X (DRX), Microscopia Eletrônica de Varredura (MEV)/ Espectroscopia de Energia
Externí odkaz:
https://doaj.org/article/b28fc83633134f279e384715201141d6
Autor:
Luciano Nascimento, Lourdes Cristina Lucena Agostinho Jamshidi, Celmy Maria B. de Menezes Barbosa
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 37, Iss 1, Pp 91-98 (2016)
The structural evolution of the amorphous phase in Co72Nb24B4 composition was processed by casting furnace at the bow and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The evolu
Externí odkaz:
https://doaj.org/article/8110da6152fa42d8a10b8fdee72154ee
Autor:
Luciano Nascimento, Reza Jamshidi Rodbari, Celmy Maria B. de Menezes Barbosa, Anastasiia Melnyk, Lourdes Cristina L. A. Jamshidi
Publikováno v:
Orbital: The Electronic Journal of Chemistry, Vol 7, Iss 4, Pp 308-317 (2015)
This study aims to investigate and characterize the amorphous alloy Co72Nb24B4 the catalytic oxidation of methanol in products that serve as primary reagents for organic synthesis, such as formaldehyde and other intermediate products. The technique f
Externí odkaz:
https://doaj.org/article/4e62d62a8f1e4698822034db0cb3df51
Autor:
Lourdes Cristina Lucena Agostinho Jamshidi, Luciano Nascimento, Celmy Maria B. de Menezes Barbosa, Reza Jamshidi Rodbari
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 36, Iss 2, Pp 3-16 (2015)
This study shows a good performance of quasicrystal Al62,2Cu25,3Fe12,5 as catalyst in catalytic reactions. This metal catalyst, without being leached with acid or base, with dry stoichiometric composition, Al62,2Cu25,3Fe12,5 is revealed among the r
Externí odkaz:
https://doaj.org/article/a3f2956281d148ceb3659c9244dd8347
Autor:
Luciano Nascimento, Lourdes Cristina Lucena Agostinho Jamshidi, Celmy Maria B. de Menezes Barbosa
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 36, Iss 1, Pp 81-88 (2015)
In this work we present a study on the super-semiconductor networks, using the Kronig-Penney model for the effective mass approximation, and then the calculations for the application of the magnetic field perpendicular and parallel to the layers of s
Externí odkaz:
https://doaj.org/article/b5f495e225bf4e9eaad899ef29354584
Autor:
Lourdes Cristina Lucena Agostinho Jamshi, Luciano Nascimento, Celmy Maria B. de Menezes Barbosa, Reza Jamshidi Rodbari
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 36, Iss 2 (2015)
Este trabalho mostra o bom desempenho do quasicristal Al62,2Cu25,3Fe12,5 como catalisador em reações catalíticas. Este catalisador metálico sem ser lixiviado com ácido ou base, a seco com composição estequiométrica de Al62,2Cu25,3Fe12,5 revel
Externí odkaz:
https://doaj.org/article/bfb564ce74464c808d2cc06057defe88