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Determinação de cloreto por cromatografia de íons em petróleo extrapesado, coque e resíduo de vácuo após decomposição em sistema fechado por combustão iniciada por microondas
(Universidade Federal de Santa Maria, 2007-07-27)
A method for chloride determination in heavy crude oil, petroleum coke and vacuum residue after microwave-induced combustion (MIC) in closed vessels is described. Samples (with exception of petroleum coke) were wrapped ...
Determinação do número de acidez total em resíduo de destilação atmosférica e de vácuo do petróleo empregando a espectroscopia no infravermelho (ATR-FTIR) e calibração multivariada
(Universidade Federal de Santa Maria, 2007-12-14)
The crude oil might contain a series of contaminants that can to produce undesired properties. Naphthenic acids (NA), for example, perhaps promotes corrosion in refineries. The determination of total acid number (TAN) in ...
Determinação de resíduos de agrotóxicos em canola empregando método QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2022-09-09)
Rapeseed has been used as green fodder for animal feed, fertilizer for soil
conditioning, and as a raw material for oil extraction. It has been used as human food,
for industrial use, and more recently for the production ...
Determinação de enxofre em petróleo pesado resíduo de vácuo e coque por ICP OES após combustão iniciada por microondas em sistema fechado
(Universidade Federal de Santa Maria, 2007-07-31)
In this work was proposed a microwave induced combustion procedure in closed vessels for decomposition of heavy crude oil, vacuum residue and coke for further sulfur determination by inductively coupled plasma optical ...
Modos quase-normais de buracos negros plano-simétricos anti-de sitter em d dimensões
(Universidade Federal de Santa Maria, 2007-08-22)
Quasinormal modes of plane-symmetric anti-de Sitter (AdS) black holes in d spacetime dimensions are investigated. Following the gauge invariant prescription developed by Kodama, Ishibashi and Seto (2000), fundamental ...
Decomposição de elastômeros por combustão iniciada por microondas em sistema fechado
(Universidade Federal de Santa Maria, 2006-07-28)
A rapid digestion procedure for further determination of inorganic elements in carbon black-containing elastomers has been developed using sample combustion in closed quartz vessels with oxygen pressure. Microwave radiation ...
Investigação sobre a formação de espécies de arsênio orgânico em soluções de nutrição parenteral
(Universidade Federal de Santa Maria, 2006-06-21)
Parenteral nutrition is the nutrients administration by intravenous mean in patients who cannot consume them for gastrointestinal way. Parenteral Nutrition Solutions are stored in glass and plastic containers, being the ...
Caracterização sócioespacial do distrito de Passo Novo e do subdistrito de Guassu Boi em Alegrete - RS, utilizando Sistemas de Informações Geográficas - SIG
(Universidade Federal de Santa Maria, 2006-09-25)
This research has as its main objective specialize and caracerize the district of Passo Novo and the sub district of Guassu Boi in Alegrete, localized in the southwest Campanha of Rio Grande do Sul, using the GIS technique. ...
Filmes finos de óxidos de vanádio depositados por sputtering reativo
(Universidade Federal de Santa Maria, 2006-05-18)
We have produced thin film samples of vanadium oxide, with different stoichiometry, by reactive magnetron sputtering from a metallic vanadium target. The thickness of the samples were maintained under 100 nm and glass or ...
Desenvolvimento e validação de método multirresíduo para determinação de pesticidas em arroz polido utilizando método QuEChERS modificado, clean-up dispersivo e GC-MS (NCI-SIM)
(Universidade Federal de Santa Maria, 2007-03-01)
The rice is the main component of the basic diet of the world-wide population, is therefore, of extreme importance for the food security. In function of this, related aspects its production and comsumption must continuously ...