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Síntese e caracterização de novos compostos envolvendo Índio e Calcogênios
(Universidade Federal de Santa Maria, 2015-07-15)
This work is composed of two parts. The first one describes the synthesis of organometallic compounds derived from Br2InCH2Br and dichalcogenoether ligands, RE(CH2)nER (E = Se, Te; n = 1, 3; R = Ph, p-C6H4NMe2), compounds ...
Síntese de pirazolo[1,5-a]pirimidinas e fluorfenilpirazóis trifluormetilados em ultrassom e síntese e aplicação de [2]rotaxanos
(Universidade Federal de Santa Maria, 2014-02-14)
This work presents the synthesis of three series of trifluoromethylated heterocycles
by using ultrasound irradiation, nomely pyrazolo[1,5-a]pyrimidines, 2,4-
difluorophenylpyrazoles and pentafluorophenylpyrazoles. The ...
Síntese de 4-organocalcogenil-1h-isocromen-1-iminas e 3-(alquil calcogenoil-2-benzofenil[b]selenofeno[2,3-d] calcogenofenos via reações de ciclização mediadas por sais de ferro
(Universidade Federal de Santa Maria, 2016-08-03)
In this work we developed the efficient and selective heterocyclic product synthesis
using as electrophilic agent a ferric chloride combinated with diorganyl
dichalcogenides under mild conditions. In the first part of this ...
Síntese, análise estrutural e avaliação da atividade catalítica mimética da superóxido dismutase e peroxidases de complexos derivados do piridoxal e cobre
(Universidade Federal de Santa Maria, 2016-03-31)
This work presents the synthesis and characterization of copper complexes
that mimic the activity of the superoxide dismutase enzyme, which operates in the
elimination of reactive oxygen species or in the activation of ...
Reações de β-enaminodicetonas com ncn dinucleófilos: obtenção de pirimidinas e sistemas heterocíclicos fundidos
(Universidade Federal de Santa Maria, 2016-08-26)
In this study the reactivity of β-enamino diketones [RC(O)C(=CHNMe2)C(O)CO2Et, R = C6H5, 4-Me-C6H4, 4-MeO-C6H4, 4-F-C6H4, 4-Br-C6H4, 4-NO2-C6H4, tien-2-il] with NCN bisnucleophiles as amidine and guanidine was investigated. ...
Polímeros fluorados anfifílicos para aplicação em diagnósticos por imagens de ressonância magnética
(Universidade Federal de Santa Maria, 2014-12-17)
The goal of this study is to present kinetic studies of (co)polymerization as well
as the synthesis and characterization of amphiphilic copolymers with a fluorinated
segment. Copolymers were obtained by RAFT (co)polymerizations ...
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 ...