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Análise da variabilidade de raios cósmicos galácticos devido a estruturas solares no meio interplanetário
(Universidade Federal de Santa Maria, 2010-12-10)
Measurements by ground based detectors of Secondary Cosmic Rays Intensity, from primary Galactic Cosmic Rays – GCR, shown several variations series caused by terrestrials and extraterrestrials effects, both of which can ...
Caracterização de turbulência completamente desenvolvida através de cumulantes e processos multiplicativos
(Universidade Federal de Santa Maria, 2010-01-12)
In this work we study drainings that present fully developed turbulence, that is, drainings characterized for raised Reynolds numbers. After a theoretical revision based on the model of Kolmogorov of 1941, we study the ...
Análise dinâmica de um sistema para reprodução de contrabaixo elétrico
(Universidade Federal de Santa Maria, 2010-01-07)
In this work, I present a study done to assess the performance of a system designed to reproduce low-frequency acustical signals with improved definition to use with a electric bass. The analysis has been done by employing ...
Estudo da resposta magnética de materiais supercondutores por meio de medidas de susceptibilidade AC
(Universidade Federal de Santa Maria, 2010-12-09)
The study of magnetic properties of a superconducting material can be conducted by AC susceptibility measurements. In particular this paper, we present a theoretical review on the phenomenon of superconductivity, we introduce ...
Periodicidades no fluxo de raios cósmicos e análise de choques interplanetários
(Universidade Federal de Santa Maria, 2010-01-08)
Muons and neutrons that reach the Earth surface with high energy constitute a particles’ group called secondary cosmic rays. In order to study the flux of this particles data from muons and neutrons stations are used. The ...
Estudo teórico da estabilidade e propriedades eletrônicas de defeitos nativos em grafite BC2N
(Universidade Federal de Santa Maria, 2010-01-08)
The stability and electronic properties of antisites and vacancies are studied by spin polarized density functional calculations using generalized gradient approximation (GGA) to the exchange-correlation functional. We ...
Realizações não lineares da simetria quiral
(Universidade Federal de Santa Maria, 2010-12-09)
We study possible nonlinear realizations of chiral symmetry only in terms of isospin multiplets of the fields under consideration, isospin matrices and of the pion field, following closely the paper "Nonlinear Realizations ...
Flutuações de temperatura eletrônica em regiões HII: o caso de 30 Doradus revisitado
(Universidade Federal de Santa Maria, 2010-01-07)
In this work are presented measurements of the electron temperature in the HII region 30 Doradus derived from the [OIII](λ4959 + λ5007)/λ4363 ratio. Long-slit spectrophotometric data of high signal-to-noise, in the range ...
Caracterização estrutural, morfológica e estequiométrica de filmes finos de óxidos de vanádio
(Universidade Federal de Santa Maria, 2010-12-10)
The application of small angles X-Ray diffraction to the determination of thin film morfology is presented. Technical instrumental aspects that are relevant to the extraction of the diffraction data in this range have been ...
Introdução à teoria da relatividade geral
(Universidade Federal de Santa Maria, 2010-01-08)
This manuscript deals with the construction of the General Relativity Theory. To achieve this goal, we first review the basic mathematical tools, namely: Differential Geometry, Geodesics, Curvature Tensor, Metric Tensor, ...