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Análise multivariada aplicada no estudo de dentifrícios comercializados no Brasil
(Universidade Federal de Santa Maria, 2018-03-02)
In this work we investigate the similarity between the chemical compositions described on the
packaging of Brazilian dentifrice samples and the concentrations of fluoride and pH in
dentifrices marketed in South Brazil. ...
Investigação de metabólitos secundários de Tabernaemontana catharinensis A. DC. – (Apocynaceae) e suas potenciais atividades antimicrobianas
(Universidade Federal de Santa Maria, 2018-07-17)
The phytochemical investigation of hexane and methanolic crude extracts and their fractions from the
bark of the stem of Tabernaemontana catharinensis (Apocynaceae, commonly known as cobrina) led
to the isolation of nine ...
Desenvolvimento de método para determinação de paraquate, diquate, clormequate e mepiquate em cevada e trigo utilizando HILIC-UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2018-07-20)
Quaternary ammonium compounds (QUATs) constitute an important class of agrochemicals that include paraquat, diquat, chlormequat and mepiquat. Among these, paraquat is one of the most well-known herbicides in the world, ...
Dinamismo estrutural e transformação monocristal para monocristal de novas estruturas estendidas de chumbo(II)
(Universidade Federal de Santa Maria, 2016-09-09)
The reaction of 1,4-α,α’-xylenediylbis(phenylphosphinic acid) (H2XBPP) with lead(II) generated two different extended structures: [Pb3(XBPP)3(H2O)] 1 and [Pb5(μ3-O)(XBPP)4(H2O)] 5 depending on the pH employed in the reaction. ...
Arquiteturas metalo-supramoleculares em derivados de aroilbistioureias
(Universidade Federal de Santa Maria, 2018-08-03)
This work presents the synthesis and characterization of twenty-six compounds divided into two main
groups. The first one approaches compounds containing the oxidorhenium(V) {ReO}3+ moeity and the
ligands benzoyl(N,N-d ...
Síntese e avaliação fotofísica de compostos fulereno[60]-glicoconjugados
(Universidade Federal de Santa Maria, 2018-09-19)
In the midst of a variety of alternative therapies in the treatment of several diseases, the photodynamic therapy appears as a versatile protocol. This therapy uses the absorptive properties of photoactive molecules, called ...
Síntese, caracterização e aplicação de solventes eutéticos em reações envolvendo formação ou derivatização de heterociclos
(Universidade Federal de Santa Maria, 2016-07-15)
This work describes the synthesis, characterization and application of eutectic solvents in reactions
involving heterocycles. The chosen solvents consisted of a eutectic mixture of choline chloride (ChCl)
with different ...
Síntese, caracterização e avaliação da atividade peroxidase de novos complexos de cobalto com ligantes derivados do piridoxal
(Universidade Federal de Santa Maria, 2017-02-16)
This work treat with the synthesis and characterization of new cobalt complexes with ligands derived from pyridoxal and their application as mimetics of the enzyme peroxidase. The complexes were structurally characterized ...
Avaliação de métodos de preparo de amostras para posterior determinação de contaminantes inorgânicos em cápsulas de uso farmacêutico
(Universidade Federal de Santa Maria, 2014)
In this work, sample preparation methods were proposed, microwave-induced combustion (MIC) and microwave-assisted wet digestion (MAWD), for further Br, Cl, Cr, Cu, I and Mn determination in pharmaceutical capsules. For Cl, ...
Energia de interação cátion-ânion de líquidos iônicos dicatiônicos em fase gasosa
(Universidade Federal de Santa Maria, 2016-08-05)
Electrospray ionization mass spectrometry (ESI-MS) with induced collision energy was used to carry out a comprehensive study on the interaction energies between cations and anions of dicationic ionic liquids. The influence ...