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Itens para a visualização no momento 21-30 of 155
Avaliação do "magnetron sputtering" como técnica para obtenção de MgB2
(Universidade Federal de Santa Maria, 2014-08-26)
In this work a survey of the potentialities and limitations of magnetron sputtering as a
tool for the production of MgB2 superconductors thin films has been made. Instead of the usual
approaches, like co-deposition onto ...
Análise de populações estelares e subestruturas em aglomerados de galáxias
(Universidade Federal de Santa Maria, 2015-08-25)
In this work, we investigated differences between stellar populations of galaxies that are part
of a cluster with and without substructures. We used optical spectra obtained from Sloan Digital
Sky Servey III DR10 for the ...
Transporte térmico em nanofitas de grafeno dopadas com N, B e SI
(Universidade Federal de Santa Maria, 2017-08-28)
The recent progress of the research on carbon nanostructures and the issue of
thermal management have established a great demand in relation to the scientific understanding
of thermal transport in these nanomaterials. ...
Produção de emaranhamento pela interação dipolar magnética
(Universidade Federal de Santa Maria, 2018-08-06)
In this work we consider a bipartite system consisting of magnetic dipoles, initially characterized by product-states uncorrelated until the dynamics of evolution is established by magnetic dipole interaction. We reproduce ...
Trocas de energia e massa no cultivo de soja e trigo no sul do Brasil
(Universidade Federal de Santa Maria, 2018-08-06)
Brazil is one of the largest agricultural producers in the world. With this, a vast area of
Brazilian territory is covered by crops that directly influence the annual carbon balance and
the exchange of water vapor between ...
Exchange bias em bicamadas de NiFe/FeMn: um estudo em função da espessura da camada antiferromagnética
(Universidade Federal de Santa Maria, 2018-12-04)
The exchange bias (EB) arises, generally, from the interfacial coupling between a ferromagnetic
layer (FM) and an antiferromagnetic layer (AFM). The most well-known manifestations
of this phenomenon, in samples with a ...
Estudo teórico de nanodomínios de grafeno e siliceno em carbeto de silício
(Universidade Federal de Santa Maria, 2018-02-20)
In this work the structural, optical and electronic properties of hexagonal monolayer compounds
of silicon carbide (h-SiC) in pristine form and in the presence of defects like graphene (h-
SiC-C) and silicene (h-SiC-Si) ...
Adsorção de cluster de ouro em materiais bidimensionais
(Universidade Federal de Santa Maria, 2017-07-31)
In this work, we studied the interaction of Au34 gold cluster with different two-dimensional
materials. Au clusters, differently of their macroscopic form, are chemically reactive. Their
use requires substrates. The ...
Utilização de algoritmo genético para a determinação da estabilidade de aglomerados atômicos e as aplicações destes com grafeno
(Universidade Federal de Santa Maria, 2017-01-31)
In this thesis we propose a improvement of the Genetic Algorithm (GA) method that is used to
search the stability of geometry of atomic clusters. The proposed improvements consist by introducing
two new operators: the ...
Modelagem da interação superfície- atmosfera: calibração dos modelos sib2 e sib3 em uma área de pastagem no sul do Brasil
(Universidade Federal de Santa Maria, 2018-02-08)
The Simple Biosphere Model (SiB) modelwas developed to represent and estimate the interactions
between soil, vegetation and atmosphere, which describe the transfer processes of energy, mass
and momentum. In this sense, ...