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Fluxo de coerência quântica para um qubit evoluindo sobre a ação de canais quânticos
(Universidade Federal de Santa Maria, 2016-08-23)
Quantum Coherence (QC) has a fundamental role in Quantum Mechanics (QM). It has
been studied since the emergence of QM. However, this quantum feature is easily destroyed
when a physical system interacts with the environment. ...
Fluxo de metano na atmosfera sobre uma cultura de arroz irrigado por inundação no sul do Brasil
(Universidade Federal de Santa Maria, 2016-08-10)
The rice paddy is responsible for 12-16% of the anthropogenic emission of CH4 in the
world. Brazil is one of most important rice paddy producer. The goal of this study is to
understand the dynamics of methane exchange ...
Não-estacionariedade de séries temporais turbulentas e a grande variabilidade dos fluxos nas baixas freqüências
(Universidade Federal de Santa Maria, 2011-08-11)
Turbulent flow high complexity makes it difficult to describe complex phenomena,
such as the transport of vector and scalar quantities at the lower atmosphere,
making the analysis of experimental data, such as time series, ...
Modelo simplificado para turbulência na camada limite noturna
(Universidade Federal de Santa Maria, 2016-03-08)
The appropriate estimation of turbulent fluxes in very stable conditions is a great challenge
for numerical models that simulate the average behavior of the stable boundary layer.
Although many features of the flow are ...
Estudo do tunelamento em junções túnel de CoFeB=MgO=CoFeB
(Universidade Federal de Santa Maria, 2011-02-25)
Magnetic tunnel junctions (MTJ) ofCoFeB=MgO=CoFeB and multilayers of (CoFeB=MgO)x3 were produced using the technique of magnetron sputtering, where the insulating film was grown in an atmosphere reactive Ar +O. Multilayers ...
Estudo teórico de defeitos em nanotubos de BN
(Universidade Federal de Santa Maria, 2014-07-15)
Boron nitride (BN) is a compound formed by covalent bonds between boron
and nitrogen atoms. In the crystalline phase it can be found in different structures,
such cubic (c-BN), simgle hexagonal (h-BN), wurtzite (w-BN) ...
Calor específico de um modelo teórico para o composto URu2Si2
(Universidade Federal de Santa Maria, 2016-01-29)
The Heavy fermion URu2Si2 compound have attracted much interest in the last
decades due to its unusual behaviors and still an unsolved problem in Condensed Matter
Physics. Specific heat measurements in URu2Si2 compounds ...
Simulação do comportamento superhidrofóbico em rampas de pilares
(Universidade Federal de Santa Maria, 2014-08-28)
We present a two-dimensional simulation based on the cellular Potts model
(CPM) of the properties of smooth and pillar structured hydrophobic surfaces. For a
surface having superhidrophobic behavior, a drop ...
Anisotropias magnéticas em filmes finos de Co: uma análise por magnetometria de torque
(Universidade Federal de Santa Maria, 2010-12-03)
By studying the magnetic behavior of materials a very important parameter to be analyzed are the constants of anisotropy. They can be associated with an effective anisotropy energy or to a more specific one as, for example, ...
Estudo computacional da viscosidade da água confinada em nanotubos de carbono
(Universidade Federal de Santa Maria, 2015-02-27)
When confined in nanometer scale, water presents great variation in their dynamic
properties. Here, we carried out molecular dynamics simulations to determine
the ratio of the diffusion coefficient and viscosity variation ...