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Consistência no cálculo perturbativo: a eletrodinâmica quântica e a anomalia
(Universidade Federal de Santa Maria, 2004-12-13)
We use a very general calculational method, concerning the divergences manipulations and calculations, in order to treat the perturbative solution of quantum electrodynamics (QED), at the one loop level, as well as to study ...
Estuda da formação de vacância induzida em nanotubos de carbono
(Universidade Federal de Santa Maria, 2004-12-14)
In this work we have performed the study of the single vacancy and the induced vacancy in carbon nanotubes by first-principles calculations using the SIESTA code,
which solves the Kohn-Sham equations via the local density ...
Estudo de primeiros princípios da interacão de monóxido de carbono com nanotubos de carbono semicondutores
(Universidade Federal de Santa Maria, 2004-10-08)
In this work we study the interaction of carbon monoxide with semiconducting (8,0)carbon nanotube through a first principles theoretical approach. Using density functional theory based methods, we show that radial ...
Estudo teórico do comportamento magnético do composto Y0.8Gd0.2Co3
(Universidade Federal de Santa Maria, 2004-06-08)
The itinerant ferromagnetic Y Co3, Tc = 301K, presents a crystalline structure with a hexagonal unit cell. It has thirty six atoms that are distributed in five different crystallographic sites, three for the Co and two for ...
Magnetoimpedância em Filmes Finemet/Metal/Finemet
(Universidade Federal de Santa Maria, 2004-10-01)
The magnetoimpedance effect (MI) in sandwiched thin films of the FeCuNbSiB/Cu produced by Magnetron Sputtering is studied using HP4396B impedance analyzer in the
frequency range 100kHz-1,8GHz. The samples were produced ...
Comparação dos fluxos turbulentos em diferentes condições de estabilidade e topografia
(Universidade Federal de Santa Maria, 2004-05-04)
In this study sensible and latent heat fluxes as well as momentum flux were analysed in terms of similarity parameters. The intensity of the turbulence and the correlation functions are also studied. The data used in ...
Estudo de primeiros princípios de Perovsquitas RNiO3 (R = Pr, Nd)
(Universidade Federal de Santa Maria, 2004-03-26)
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