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Síntese de trifluormetil-cicloalca[d]-2(1h)-pirimidinonas e tiopirimidinonas
(Universidade Federal de Santa Maria, 2004-07-20)
This work describes the synthesis and identification of a serie of 4-trifluoromethylcycloalca[d]-2-(1H)-(thio)pyrimidinones, from the cyclocondensation reactions of 2-trifluoroacetylmethoxycycloalkenes with urea and ...
Consistência no cálculo perturbativo: a eletrodinâmica quântica e a anomalia
(Universidade Federal de Santa Maria, 2004-12-13)
We use a very general calculational method, concerning the divergences manipulations and calculations, in order to treat the perturbative solution of quantum electrodynamics (QED), at the one loop level, as well as to study ...
Estuda da formação de vacância induzida em nanotubos de carbono
(Universidade Federal de Santa Maria, 2004-12-14)
In this work we have performed the study of the single vacancy and the induced vacancy in carbon nanotubes by first-principles calculations using the SIESTA code,
which solves the Kohn-Sham equations via the local density ...
Estudo de primeiros princípios da interacão de monóxido de carbono com nanotubos de carbono semicondutores
(Universidade Federal de Santa Maria, 2004-10-08)
In this work we study the interaction of carbon monoxide with semiconducting (8,0)carbon nanotube through a first principles theoretical approach. Using density functional theory based methods, we show that radial ...
Pirólise lenta de serragem de eucalipto para obtenção de bioóleo e carvão
(Universidade Federal de Santa Maria, 2004-07-26)
This dissertation presents the slow pyrolysis of eucalyptus sawdust as an alternative, thermal process of treatment of forestry residues for the obtainment of gaseous, liquid and solid products. With the aid of a pyrolysis ...
Avaliação de procedimentos de digestão para determinação voltamétrica de traços metálicos em aminoácidos usados em nutrição parenteral aplicação na determinação de cádmio e chumbo
(Universidade Federal de Santa Maria, 2004-09-17)
In this work, the interaction of all the amino acids that compose the parenteral nutrition solutions, was investigated with the cadmium and lead metals, with the objective of determining the levels of contamination and if ...
Avaliação de fotorreatores na degradação de corantes reativos e efluente têxtil
(Universidade Federal de Santa Maria, 2004-02-27)
The continuous search for better quality of life, nowadays, implies in industrial growth e, consequently, in greater or minor degree of environmental pollution. The textile industry is responsible for part of this pollution; ...
Avaliação dos níveis séricos de alumínio na dieta alimentar e medicamentos de pacientes com insuficiência renal crônica
(Universidade Federal de Santa Maria, 2004-03-04)
Estudo teórico do comportamento magnético do composto Y0.8Gd0.2Co3
(Universidade Federal de Santa Maria, 2004-06-08)
The itinerant ferromagnetic Y Co3, Tc = 301K, presents a crystalline structure with a hexagonal unit cell. It has thirty six atoms that are distributed in five different crystallographic sites, three for the Co and two for ...
Magnetoimpedância em Filmes Finemet/Metal/Finemet
(Universidade Federal de Santa Maria, 2004-10-01)
The magnetoimpedance effect (MI) in sandwiched thin films of the FeCuNbSiB/Cu produced by Magnetron Sputtering is studied using HP4396B impedance analyzer in the
frequency range 100kHz-1,8GHz. The samples were produced ...