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Investigação teórica sobre possíveis aplicações na eletrônica de nanofios de AlN, GaN e InN: um estudo de primeiros princípios
(Universidade Federal de Santa Maria, 2012-07-30)
Using the formalism of Density Functional Theory with spin polarization and the Generalized
Gradient Approximation for exchange and correlation term, we studied the stability
and electronic properties of substitutional ...
Susceptibilidade magnética de um modelo de Hubbard estendido com interação ao atrativa
(Universidade Federal de Santa Maria, 2012-01-17)
Anomalous properties of the normal state of a strongly correlated electron system described
by an attractive extended Hubbard model are investigated. The equations of motion
of the Green s functions are calculated with the ...
Derivação de coeficientes de difusão turbulenta em condições de vento norte: aplicação em um modelo analítico euleriano de dispersão de poluentes
(Universidade Federal de Santa Maria, 2012-06-15)
The advection-diffusion equation has been extensively used in air pollution models to simulate mean contaminant concentrations in the planetary boundary layer (PBL). Therefore, in a Eulerian framework, it is possible to ...
Dinâmica da transição pré-câncer para câncer: estudo da expressão de vias de manutenção do genoma
(Universidade Federal de Santa Maria, 2012-07-09)
The loss of genomic stability associated with genetic deterioration is one of the many important aspects for the development of carcinomas. The genome maintenance mechanisms (GMM) ensure the integrity of DNA and cell ...
Estimativas das trocas líquidas de carbono em duas áreas de cultivo de arroz irrigado na região central do RS
(Universidade Federal de Santa Maria, 2012-07-26)
The turbulent fluxes of carbon dioxide (CO2 ) were investigated in two sites of
irrigated rice in southern Brazil, using the eddy covariance technique over 385 days
of analysis at the site of Paraiso do Sul and 683 days ...
Estudo por dinâmica molecular da transição de fase estrutural de nanotubos de carbono por indução de pressão: um método ab initio
(Universidade Federal de Santa Maria, 2012-10-26)
This work aims to study the computational training of new phases of materials based on
carbon nanotubes using as precursor materials. The procedure consists in simulate bundle
formed by carbon nanotubes (NTC) (5, 5), (6, ...
Efeito do tratamento térmico na relaxação magnética de microfios amorfos de CoFeSiB recobertos por vidro
(Universidade Federal de Santa Maria, 2012-02-27)
Magnetoimpedance has been proved to be an excellent tool to study the magnetization
dynamics and the ferromagnetic resonance (FMR) linewidth provides a convenient way
for measuring damping parameters in magnetic materials. ...
Oxidação de nanofios de InP: um estudo de primeiros princípios
(Universidade Federal de Santa Maria, 2012-12-17)
A study of InP nanowires with an oxide layer, as well as the initial steps of the oxidation process is pursued through first principles calculations and molecular dynamics simulations within the Density Functional Theory. ...
Produção de filmes supercondutores de nióbio e de sistemas híbridos crescidos por Magnetron Sputtering DC
(Universidade Federal de Santa Maria, 2012-08-16)
Currently, several research groups have been devoted to the production of superconducting
films. This interest lies on the facility of their manipulation, on the understanding of basic
concepts of the superconductivity ...
Modelagem lógica de senescência celular humana
(Universidade Federal de Santa Maria, 2012-12-12)
After the progressive telomere shortening in successive cell divisions, normal
somatic cells undergo a growth arrest called cellular senescence that occurs due to
incomplete DNA replication. Senescence can also be activated ...