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Síntese de 4,5-bis(trifluormetil)-1h-pirazóis através de reações eletrofílicas e nucleofílicas empregando NIS e MFSDA
(Universidade Federal de Santa Maria, 2019-02-27)
This dissertation describes the development of an efficient methodology for the functionalization of position 4 of 3-alkyl(aryl)-1-aryl-5-trifluoromethyl-1H-pyrazoles systems by halogenation and subsequent reaction with ...
Determinação de compostos sulfurados em amostras de asfalto de petróleo empregando cromatografia líquida de alta eficiência com detecção por arranjo de fotodiodos
(Universidade Federal de Santa Maria, 2019-03-21)
The presence of organosulfur compounds in petroleum-derived asphalts is related to
several negative characteristics, such as catalyst poisoning and corrosion of
equipment during the refining process, as well the acceleration ...
Transformação estrutural no estado sólido de polímeros de coordenação de duas e três dimensões contendo o ligante flexível 4-α,α’-xilenodiilabis(fenilfosfinato)
(Universidade Federal de Santa Maria, 2018-02-27)
Cobalt, nickel, copper and zinc acetate salts were reacted with the 1,4-α, α'-
xylenediylabis(phenylphosphinate) (XBPP) ligand and two-dimensional CoII and ZnII
coordination polymers were reacted with temperature control: ...
Determinação de micotoxinas por UPLC-MS/MS em grãos armazenados sob condições de temperatura e atmosfera controlada
(Universidade Federal de Santa Maria, 2019-02-28)
This work aimed to develop and validate analytical methods for the determination of mycotoxins in beans, corn and soybean using UPLC-MS/MS and to evaluate the occurrence of mycotoxins in samples of these grains after six ...
Síntese, propriedades fotofísicas de 6-amino-4- (trifluormetil)quinolinas e sua aplicação na construção de sistemas triazolil-quinolínicos
(Universidade Federal de Santa Maria, 2019-02-28)
The present work describes the synthesis, structural study and evaluation of the
photophysical properties of novel 6-amino-4-(trifluoromethyl)quinolines, as well as their
application in obtaining an unpublished series ...
Determinação simultânea de ferro e níquel em suplementos alimentares por HR-CS SS-GF AAS
(Universidade Federal de Santa Maria, 2019-02-26)
In this work a method was developed for the simultaneous determination of Fe and Ni as contaminants in dietary supplements by high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid ...
Estudo de compostos voláteis de níquel e vanádio em cimento asfáltico de petróleo virgem e envelhecido
(Universidade Federal de Santa Maria, 2019-03-22)
Among the heteroatoms present in petroleum, nickel and vanadium are the most abundant metals. Thus, these can be found in large quantities in petroleum derivatives, such as Asphaltic Petroleum Cement (APC). The presence ...
Síntese, caracterização, estudo fotofísico e interação molecular de novas calcogenoporfirinas derivadas da 5,10,15,20–tetrakis(pentafluorofenil)porfirina
(Universidade Federal de Santa Maria, 2019-02-18)
The present work had as main objective the synthesis of new chalcogenporphyrins derived from
5,10,15,20-Tetrakis(pentafluorophenyl)porphyrin, characterization, study of photophysical
properties and analysis of biomolecular ...
Determinação de Ca, K, Mg e Na em petróleo utilizando amostragem direta e espectrometria de absorção atômica com forno de grafite
(Universidade Federal de Santa Maria, 2015-07-27)
Crude oil is a complex matrix and with variable chemical composition, and the determination of trace elements in this sample is not an easy task. The presence of some metals can result in problems during transportation and ...
Síntese verde e versátil de calcogenol ésteres e avaliação da atividade antibacteriana
(Universidade Federal de Santa Maria, 2014-08-30)
The present work aims the synthesis of chalcogenoesters, by a green and
versatile methodology, using low cost and non-toxic reagents, as well as the
biological activity of this kind of compounds, as antibacterial agents.
By ...