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Voltametria adsortiva na determinação de traços e ultra-traços de Zr(IV), V(V),Ti(IV), Mo(VI), Hf(IV), Nb(V) e Ta(V) em águas naturais
(Universidade Federal de Santa Maria, 2014-03-13)
Single sensitive sequential AdSV methods were developed and optimized for the determination of trace zirconium, vanadium, titanium and molybdenum in river, estuary and seawater, independent of the salinity and content of ...
Desenvolvimento de dispositivo para extração e coleta de fumos de asfalto e aplicação na determinação de hidrocarbonetos policíclicos aromáticos
(Universidade Federal de Santa Maria, 2015-03-16)
The given work presents the development and usage of a device (DEC Device for Extraction and Collection) capable of generate and collect fumes produced by the heating of asphalt cement samples. The DEC was elaborated ...
Desemulsificação de petróleos assistida por ultrassom e posterior caracterização das fases água e óleo
(Universidade Federal de Santa Maria, 2011-08-19)
The effect of ultrasound (US) for demulsification of crude oils with different
characteristics (viscosity, density e water content) was investigated, without using
chemical demulsifier. Initially, the treatment using US ...
Síntese, propriedades e avaliações de interações intermoleculares no estado sólido de triazenos e complexos com cádmio(II)
(Universidade Federal de Santa Maria, 2004-07-23)
This work demonstrates the determination of the crystalline/molecular structure of three cadmium (II) complexes with monocatenated triazenes ligands previously deprotonated and the structures crystalline/molecular of two ...
Síntese regiosseletiva de 2-metiltiopirimidin-4(3h)-onas N3-substituídas, uracilas derivadas e bromacil análogos
(Universidade Federal de Santa Maria, 2014-01-31)
A series of twenty-seven 3,6-disubstituted 2-methylthiopyrimidin-4(3H)-ones that have as substituents at 6 position of the pyrimidine ring the groups Me, Ph, 4-Me-C6H4, 4-OMe-C6H4, 4-F-C6H4, 4-Br-C6H4 and at 3 position the ...
Síntese de Seleno-Isoxazóis e Seleno-Indóis via Reações de Ciclização Intramolecular mediadas por Cloreto Férrico
(Universidade Federal de Santa Maria, 2013-03-05)
This work reports the synthesis of a series of 4-organoselenyl-isoxazoles (19 examples), prepared via FeCl3/diorganyl diselenides-promoted intramolecular cyclization of alkynone O-metyloximas. In general, the selenyl-isoxazoles ...
Síntese de Calcogenofenos e Isoquinolinas via Reações de Ciclização Intramolecular
(Universidade Federal de Santa Maria, 2013-11-26)
In the first part of this work, a series of selenophenes and tellurophenes were prepared starting from of (Z)-chalcogenoenynes, by employing FeCl3 diorganyl dichalcogenide-mediated intramolecular cyclization. In general, ...
Desenvolvimento de método para a determinação simultânea de resíduos de agrotóxicos e medicamentos veterinários em solo por UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2013-08-30)
Typically, soil is the final destination of pesticides applied in agriculture and of veterinary drugs employed in animal production. The global concern about the possible consequences of the increased use of these compounds ...
Avaliação de diferentes sistemas de alimentação sobre as características que afetam a qualidade da carcaça e da carne
(Universidade Federal de Santa Maria, 2008-02-13)
This work was divided in two experiments. In first the objective was to evaluate the carcass, meat, carcass no integrants components and fatty acids profile of intramuscular fat of Devon steers finished in: feedlot (CONF), ...
Síntese, propriedades e investigação estrutural de 1,3-diariltriazenos e complexos com Ni(II), Pd(II), Pt(II) e Hg(II)
(Universidade Federal de Santa Maria, 2006-08-04)
Although transition metal complexes with nitrogen coordination spheres involving monocatenated 1,3-diarylsubstituted triazenido ligands (ArNNNAr)−, have been investigated in the last decades, the structure of such compounds ...