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Itens para a visualização no momento 11-20 of 22
Dinâmica da magnetização e ruído Barkhausen em filmes finos magnéticos amorfos
(Universidade Federal de Santa Maria, 2006-05-31)
In this work, the effect of the thickness on the statistical properties of Barkhausen noise and dynamic hysteresis in thin films with compositions Fe73.5Cu1Nb3Si13.5B9,
Fe73.5Cu1Nb3Si16.5B6, Fe73.5Cu1Nb3Si18.5B4 and ...
Efeito das flutuações na espessura do isolante sobre o tunelamento em junções de A1/A10x/A1
(Universidade Federal de Santa Maria, 2003-12-23)
Unable to insert abstract.
Variações espaciais de propriedades físicas em Puppis A
(Universidade Federal de Santa Maria, 2009-05-27)
The current work presents some physical proprieties from a region of the galactic supernova remnant Puppis A. For that, long slit spectrophotometric data were obtained in distinct positions. The data were obtained in 14 ...
A hipótese de turbulência localmente isotrópica e a universalidade da constante de Kolmogorov
(Universidade Federal de Santa Maria, 2006-05-03)
According to the Kolmogorov's fully developed turbulence theory established in 1941, there is an equilibrium range in which phenomenological quantities associated to the turbulence flow are described by laws of universal ...
Observações multifreqüência de quasares CSS utilizando o VLBA
(Universidade Federal de Santa Maria, 2006-12-15)
In this thesis, I discuss the results of radio polarization observations of selected Compact Steep Spectrum sources made with the Very Long Baseline Array using selected frequencies in the 18 cm, 21 cm, 13 cm and 6 cm ...
Magnetoimpedância e dinâmica da magnetização em nanoestruturas ferromagneto/Cu (Ag)/ferromagneto
(Universidade Federal de Santa Maria, 2007-08-17)
In this work the static and dynamic magnetic properties are investigated in FM/i/Cu(Ag)/i/FM tri-layer structured samples where FM is the ferromagnetic multilayer and i is the SiO2 isolating layer. All samples have been ...
Magnetoimpedância e dinâmica da magnetização em multicamadas de Ni81Fe19/Ag e Ni81Fe19/Cu
(Universidade Federal de Santa Maria, 2006-05-29)
In this work, the magnetoimpedance (MI) and magnetization dynamics in multilayered
Ni81Fe19/Ag and Ni81Fe19/Cu samples are studied. The samples were produced by magnetron
sputtering at the Laboratório de Magnetistmo e ...
Gradientes de abundâncias químicas em galáxias espirais
(Universidade Federal de Santa Maria, 2006-06-28)
We used photoionization models in order to derive O/H, N/O, and S/O abundance gradients in three isolated barred spiral galaxies (NGC 1365, NGC 925, NGC 1073) and in nine spiral galaxies (NGC 4501, NGC 4571, NGC 4689, NGC ...
Fotometria CCD UBVRI de aglomerados de estrelas das Nuvens de Magalhães
(Universidade Federal de Santa Maria, 2006-05-19)
We present UBVRI CCD photometry in the Johnson-Cousins photometric system for a sample of twenty nine Magellanic Cloud star clusters (Lindsay 16, 26, 29, 48, 53, 61, 66, 67, 72, 76, 79, 82, 83, 85 of the Small Cloud ...
Estudo das propriedades eletrônicas e estruturais em nanotubos de fosfeto de índio
(Universidade Federal de Santa Maria, 2009-09-29)
In this work, using first principles study based in framework of the density functional theory with the local density approximation (LDA) for the exchange-correlation
functional, we developed a detailed study about the ...