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Síntese e análise estrutural de complexos de urânio(VI) com hidrazonas, semicarbazonas e ligantes relacionados
(Universidade Federal de Santa Maria, 2006-10-02)
Uranyl complexes with ligands with oxygen and nitrogen donors have been extensively reviewed and they have aroused interest on account of their high stability, usefulness in selective chemical separations and their formation ...
Síntese de 3H-pirido[2,3-b][1,4]diazepinos trifluormetil substituídos e diazepinonas análogas
(Universidade Federal de Santa Maria, 2006-12-19)
The present research describes new synthetic methodologies for the synthesis of new series of 2-aryl(heteroaryl)-4-trifluoro-4,5-dihydro-3Hpyrido[2,3-b][1,4]diazepin-4-ols and 2-aryl(heteroaryl)-3H-pyrido[2,3-b][1,4]diaz ...
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano
(Universidade Federal de Santa Maria, 2006-02-02)
The present research describes the use of b-alcoxyvynil
trihalomethyl ketones [CX3C(O)CR2CR1R, where X= Cl, F; R= OMe, OEt; R1: H, Me, Ph, 4-MePh, 4-MeOPh, 4-BrPh, 4-ClPh, 4-FPh; R2= H, Ph] in the regiospecific synthesis ...
Emprego de ultrassom para a oxidação e separação de compostos orgânicos sulfurados em hidrocarbonetos e determinação de enxofre por técnicas espectrométricas e cromatográficas
(Universidade Federal de Santa Maria, 2009-04-13)
In this work, a process based on ultrasonic energy for sulfur removal from
petroleum fractions was proposed. The process combines ultrasonic energy and a
peroxyacid reagent in order to achieve the required sulfur content ...
Emprego de multiatomizador de quartzo para a minimização de interferências e determinação de arsênio por HG AAS em antimoniais pentavalentes
(Universidade Federal de Santa Maria, 2008-03-06)
A systematic study was made to evaluate the interference of hydride forming elements in conventional quartz tube atomizers as well as to study the performance of
multiatomizer of quartz (MMQTA) for minimization of these ...
Emprego de oxigênio e peróxido de hidrogênio como auxiliares na decomposição de amostras biológicas por via úmida assistida por radiação micro-ondas
(Universidade Federal de Santa Maria, 2012-07-02)
In the present work it was investigated the possibility of using diluted HNO3 solutions for digestion of biological samples (milk powder and bovine liver) by microwave-assisted wet digestion. The possibility of use O2 and ...
Cinética de craqueamento de hidrocarbonetos (C8) utilizando micropirólise em tubo de vidro selado aplicação em modelagem geoquímica
(Universidade Federal de Santa Maria, 2010-12-07)
One of the most fundamental problems in petroleum systems modeling, related to Oil
Exploration, is to determine the limits of space and time of hydrocarbon generation in
sedimentary basins. The aim of this study is to ...
Estudo de reações de flúor-inserção em 1H-pirazóis utilizando os reagentes fluorantes selectfluor, DAST e MFSDA
(Universidade Federal de Santa Maria, 2015-08-19)
This thesis describes the studies carried out using fluorinating reagents with different approaches: Selectfluor as an electrophilic fluorine source; DAST for nucleophilic fluorinations and MFSDA as a nucleophilic ...