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Itens para a visualização no momento 11-19 of 19
Síntese e atividade biológica de furan-3-carboxamidas, 3-aminometilenodiidrofuran-2-onas e carbamatos de etila trialometilados
(Universidade Federal de Santa Maria, 2007-03-02)
The present work describes the synthesis of a new series of furan-3-carboxamides and 3-aminomethylenedihydrofuran-2-ones, through the reactions of 3-trichloroacetyl furan or furan-3-carbonyl chloride, and 3-trichloroacet ...
Síntese e análise estrutural de haletos de organilcalcogênios ( Se e Te ) com estados de oxidação mistos
(Universidade Federal de Santa Maria, 2007-03-22)
This work describes the synthesis and structural analysis of new organochalcogen halides with mixed oxidation states in the same molecule. Studies in the solid state by X-ray diffraction reveal a general tendency to associate ...
Síntese e análise estrutural de novos polímeros de coordenação e compostos moleculares de fosfinatos metálicos
(Universidade Federal de Santa Maria, 2007-12-03)
In this work, the structures of coordination polymers and molecular compounds Cu(II), Hg(II), Pb(II) and Cd(II) with phenylphosphinate or diphenylphosphinate ligands were determined and are discussed. The reaction of ...
Determinação de cádmio e chumbo em sangue por espectrometria de absorção atômica com tubo aquecido na chama após combustão iniciada por microondas
(Universidade Federal de Santa Maria, 2007-07-25)
In this work a procedure for Cd and Pb determination by solid sampling flame furnace atomic absorption spectrometry after microwave induced combustion (MIC-FF-AAS) is used. Human blood samples were priory lyophilized, ...
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 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 ...
Síntese, estrutura e avaliação da atividade antimicrobiana de complexos metálicos com sulfametoxazol
(Universidade Federal de Santa Maria, 2007-03-16)
This work presents the study of compounds obtained from interaction of sulfamethoxazole with copper, cadmium, mercury and nickel acetates, gold triphenilphosphine acetate / chloride and with silver chloride. The synthesis ...
Sulfoximidovinil trifluormetil cetonas. Obtenção e aplicação na síntese de azóis e azinas derivadas
(Universidade Federal de Santa Maria, 2007-07-02)
This work describes the synthesis of a new series of 4-alkyl(aryl)-4-tetramethylenesulfoximide-1,1,1-trifluorobut-3-en-2-ones (5a-k) by the O,N-exchange reactions of ketones (1a-k) [CF3C(O)CH=CR1R, where R = OMe, OEt; R1 ...