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Itens para a visualização no momento 21-30 of 1976
Uma solução para a equação da energia cinética turbulenta empregando o método das características
(Universidade Federal de Santa Maria, 2009-08-31)
In this study, using the Method of Characteristics and numeric resources, presents a solution to the equation Spectral Density Evolution of Turbulent Kinetic Energy for a Convective Boundary Layer (CBL) in the morning.
It ...
Transicões inversas em modelos fermiônicos de vidro de spin
(Universidade Federal de Santa Maria, 2010-08-26)
The present work studies inverse transitions by using two spin glass models: the infinite-range fermionic Ising spin glass (FISG) in the presence of a transverse magnetic field
¡ and Hopfield fermionic Ising spin glass ...
Espectros de turbulência em terreno complexo
(Universidade Federal de Santa Maria, 2008-08-20)
Throughout this paper a spectral analysis is conducted on the superficial limit layer in complex terrains. The data used were collected in the central part of the state of Rio Grande
do Sul, in the Valley of Jacuí River. ...
Características estatísticas turbulentas associadas ao fenômeno do vento norte no sul do Brasil: aplicação ao problema da difusão de contaminantes
(Universidade Federal de Santa Maria, 2008-04-18)
A parameterization for the transport processes in a shear driven planetary boundary layer (PBL) has been established, employing turbulent statistical quantities measured during the north wind phenomenon in southern Brazil. ...
Modelo espectral de heisenberg aplicado ao decaímento da turbulência na camada residual
(Universidade Federal de Santa Maria, 2005-10-22)
In the study of the dispersion of contaminants in the atmosphere by computational simulations, the Eulerian approach, based in the diffusionadvection equation, is largely employed. In these simulations, concentration values ...
Novos polímeros de coordenação e complexos moleculares envolvendo seleninatos e selenonatos
(Universidade Federal de Santa Maria, 2012-07-03)
In this work thirteen new compounds were synthesized and characterized using the
two acids, phenylseleninic (1) and 4-bromophenylseleninic (2) as ligands precursors.
Reactions were carried out using ammonium salts of ...
Prospecção fitoquímica e atividade biológica de plantas medicinais da família asteraceae do bioma pampa
(Universidade Federal de Santa Maria, 2012-04-09)
The species selected for this study were: Pluchea sagittalis, Baccharis
pentodonta and Baccharidastrum triplinervium, all belonging to the Asteraceae
family. The extracts and fractions from leaves and roots of three species ...
Estudo do efeito matriz na determinação de agrotóxicos em diferentes tipos de arroz pelo método QuEChERS modificado e LC-MS/MS
(Universidade Federal de Santa Maria, 2012-03-30)
Rice is socially and economically important because it is the main component of the diet of more than half of the world s population. Brazil is one of the main rice producers in the world and Rio Grande do Sul state yields ...
Metodologia analítica para o estudo da interação de cádmio e chumbo com alguns aminoácidos presentes em soluções de nutrição parenteral
(Universidade Federal de Santa Maria, 2005-12-14)
The patients' health under treatment by Parenteral Nutrition (PN) is directly associated to the quality of the solutions used during the procedures and thus, a rigorous quality control is necessary. Among possible contaminants, ...
Conversão térmica de casca de arroz à baixa temperatura: produção de bioóleo e resíduo sílico-carbonoso adsorvente
(Universidade Federal de Santa Maria, 2005-07-29)
The exploitation of rice husks through thermal conversion at low temperature, adding economical value through its pyrolysis products, may represent a solution to the current environmental problem of discharging this ...