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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 ...
Caos na camada limite atmosférica noturna
(Universidade Federal de Santa Maria, 2009-04-08)
A three-equation model, based on prognostic expressions for the Richardson number, turbulent kinetic energy and wind shear is proposed to represent turbulent behavior in the nocturnal boundary layer (NBL). Integration ...
Variações em curta e longa escalas de tempo do perfil em duplo-pico de Ha da Galáxia Pictor A
(Universidade Federal de Santa Maria, 2021-10-27)
In the current paradigm nuclear activity in a galaxy happens when the central Supermassive
Black Hole (SMBH) is being fed by an accretion disk of gas. The spectral signature of the
accretion disk is the presence of broad ...
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 ...
A cinemática e distribuição do gás molecular e ionizado na região central da galáxia Seyfert NGC1125
(Universidade Federal de Santa Maria, 2021-08-18)
We use the J and K spectroscopic observations of the inner 350 pc of the Seyfert 2 galaxy
NGC1125 to investigate the kinematic structure of the hot molecular ( 2000 K) and ionized
gas, as well as of the stars. The ...
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) ...
Estudo das propriedades térmicas de nanofios de silício
(Universidade Federal de Santa Maria, 2006-06-25)
In this work we present the results of the study of thermal stability of silicon
nanowires (SiNWs), carried out by computational simulation using Monte Carlo
methods. The study focuses on cylindrical nanowires grown in ...
Estudo da difusão turbulenta empregando modelos estocásticos Lagrangeanos
(Universidade Federal de Santa Maria, 2007-03-09)
In this work, the Lagrangian stochastic particle model LAMBDA is utilized to simulate the dispersion and the transport of contaminants under different atmospheric conditions. The analysis employs three different field ...
Dinâmica de fluxos de energia e CO2 em sistemas agrícolas com rotação de culturas no Sul do Brasil utilizando o método eddy covariance
(Universidade Federal de Santa Maria, 2018-03-27)
Analysis of carbon and heat fluxes in cropping systems is important for understanding the impacts
of different management practices and meteorological conditions, in the context of climate
change, on agriculture. We have ...
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 ...