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Consistência no cálculo perturbativo tridimensional em teoria quântica de campos: a eletrodinâmica quântica
(Universidade Federal de Santa Maria, 2005-03-14)
In this work we present a detailed study about the three-dimensional quantum electro-
dynamics QED3, in perturbative solution at the one loop level. A very general method,
concerning the manipulations and calculations ...
Vidro de spin e antiferromagnetismo com interacão de pareamento BCS local
(Universidade Federal de Santa Maria, 2005-07-12)
In this work the competition among spin glass(SG), antiferromagnetism (AF) and BCS pairs formation (PAIR) in real space is investigated. The model consists of an Ising spin glass term and a local BCS term that favors double ...
Magnetostricção e ruído Barkhausen em aços elétricos de grão não-orientado
(Universidade Federal de Santa Maria, 2005-12-20)
Non-oriented electrical steels (NO) studied in this work are used in applications that demand isotropy of magnetic properties along the plane of the sheet, which the magnetic field is applied in different angles with respect ...
Diferentes técnicas de condicionamento em séries temporais turbulentas
(Universidade Federal de Santa Maria, 2005-12-09)
The dynamics process of the atmosphere near Earth ground is controled by two main forcings, termical and machanics. These process are reponsible for the atmospheric flow variability in this layer, and this variability ...
Decaimento da turbulência na camada superficial
(Universidade Federal de Santa Maria, 2005-04-27)
This dissertation presents a study of the atmospheric turbulence decay on the surface layer during the evening transition. This is done through the analysis of the spectral densities temporal evolutions of the three wind ...
Estudo de aglomerados estelares das nuvens de magalhães usando fotometria CCD na banda V
(Universidade Federal de Santa Maria, 2005-06-02)
In this work we present CCD photometry in the V band for 13 star clusters in the Magellanic Clouds (LI0, L54, L59, L85, L96, NGC 1818, NGC 1866, NGC 1868, NGC 1978, NGC 2157, NGC 2213, NGC 2214, Hll). Photometric calibration ...