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Βeta-bloqueadores em efluente hospitalar: ocorrência, degradação por processos avançados de oxidação e identificação de subprodutos
(Universidade Federal de Santa Maria, 2011-12-15)
β-Blockers are an important group of prescription drugs; as a consequence of the large and continuous use, they are commonly found in the environment.
This study assessed, preliminary, the inherent risk of the β-blockers ...
Síntese e estrutura de compostos poliaza heterocíclicos
(Universidade Federal de Santa Maria, 2012-07-27)
This work describes the synthesis of a number of polyaza heterocycles and
the mechanistic study to obtain these products. Furthermore, the characterization
was performed by spectroscopic method and the structural study by ...
Síntese de 3-acil-4-aril-2-(trifluormetil)-2-hidróxi-3,4,7,8-tetraidro-2h-cromen-5(6h)-onas via reações multicomponentes e derivatizações
(Universidade Federal de Santa Maria, 2012-08-20)
This work describes firstly the synthesis of a new series of 3-acyl-4-aryl-2-(trifluoromethyl)-2-hydroxy-3,4,7,8-tetrahydro-2H-chromen-5(6H)-ones (4) (thirty-four examples) through the methodology of multicomponent reactions ...
Desenvolvimento de um processo de separação de emulsão com o uso de radiação microondas para a caracterização de petróleo extrapesado
(Universidade Federal de Santa Maria, 2009-04-17)
In this work is proposed a procedure for separation in laboratory scale of extra-heavy
crude oil emulsions with high dissolved water and salt content, using microwave radiation in
a closed system. The emulsion was ...
Síntese regiosseletiva de cromenos e cromenonas derivados de organocalcogênio via reações de ciclização intramolecular
(Universidade Federal de Santa Maria, 2012-08-30)
In the first part of this work, a series of organochalcogen propargyl aryl ethers (19 examples) was easily prepared by reaction of propargyl aryl ethers and different organochalcogen electrophilic species. In general, the ...
Síntese de novos heterociclos a partir do ácido levulínico
(Universidade Federal de Santa Maria, 2009-01-26)
The synthesis of new compounds alkyl 3-azolyl propanoate e alkyl 3-azolyl
propanoic acid structurally analogues to gamma-aminobutiric acid (GABA) is
reported. One more time using the acetal acylation method, now the ...
Mecanismo reacional de etanotiol em eletrodo de ouro e seu comportamento em sistemas redox
(Universidade Federal de Santa Maria, 2012-08-10)
Sulphur compounds can interfere with product quality of the wine, since they have a
characteristic undesirable odor. The ethanethiol is considered an interesting compound from
the electrochemical point of view, since it ...
Estrutura Molecular e Supramolecular de Pirazolo[1,5- a]pirimidinas
(Universidade Federal de Santa Maria, 2010-05-07)
This work describes the molecular and supramolecular structure of fourteen pyrazolo[1,5-a]pyrimidines from bond lengths, torsion angles, angles between planes and interatomic distances. The data discussed were originated ...
Síntese e aplicação de calcogenetos derivados de peptídeos em catálise assimétrica
(Universidade Federal de Santa Maria, 2010-07-12)
In the present work, we have developed a flexible, modular synthetic route for the preparation of new chiral chalcogen peptide derivatives containing sulfur,
selenium or oxygen and evaluate their application as catalysts ...
Síntese e arranjos supramoleculares de complexos Bis(triazenido) macrocíclicos e triazenido 1-óxido com os cátions Cu2+, Ni2+, Cu+, K+
(Universidade Federal de Santa Maria, 2010-06-09)
This work elaborates on the determination of crystal and molecular structures of four pro-ligands, emphasizing bis(triazenes), triazene 1-oxide and a new class of bis(triazenes) macrocyclic, and eight complexes involving ...