Buscar
Itens para a visualização no momento 1-10 of 12
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 ...
Efeito hall extraordinário em multicamadas granulares de SiO2/Co/CoO com exchange bias
(Universidade Federal de Santa Maria, 2012-07-27)
Granular magnetic systems can be composed by magnetic particles or clusters with size of some
nanometers. These magnetic nanoparticles present different magnetic order phases, as superparamagnetic,
and they can be embedded ...
Descrição Booleana para eventos celulares: construção de redes, topologia e análise dinâmica
(Universidade Federal de Santa Maria, 2012-01-13)
This work presents a methodology to describe the dynamics
and topology of biological regulatory networks through the application of graph
theory. We model these networks using Boolean rules and simulations performed
with ...
Balanço de água no ciclo da cultura de soja: representação no modelo de vegetação dinâmica Agro-IBIS
(Universidade Federal de Santa Maria, 2012-07-17)
Exchanges of water in the soil-plant-atmosphere are controlled by physical-hydric soils, which in turn are highly variable in space and very sensitive to the use and soil management, especially in an agroecosystem. ...
Propriedades eletrônicas e estruturais de nanoestruturas de carbono funcionalizadas para aplicação em sensores
(Universidade Federal de Santa Maria, 2012-01-12)
This work presents a study of properties of functionalized carbon nanotubes
and graphene nanoribbons. We studied, by first principles simulations, the structural
and electronic properties of functionalized nanotubes and ...
Estudo multibanda do conteúdo estelar de regiões HII do Hemisfério Sul
(Universidade Federal de Santa Maria, 2012-10-29)
We present a multi-wavelength study of the stellar content of 11 optical/infrared Southern
Galactic Hii regions with 10 h < α(J2000) < −17 h and −65° < δ(J2000) < −35°.
Nine optical objects with no published or uncertain ...