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Determinação do grau API e teor de enxofre e nitrogênio em petróleo usando ATR-FTIR e métodos quimiométricos
(Universidade Federal de Santa Maria, 2019-11-25)
Parameters such as API gravity and sulfur and nitrogen concentrations are important to determine crude oil quality. API, S and N grade determinations were evaluated by ASTM D-7042, ASTM D-5453 and ASTM D-4629 methods, ...
Síntese, análise estrutural e avaliação da atividade inibitória da enzima urease por oxidovanádio (IV) e dioxidovanádio (V) complexos derivados de hidrazidas aromáticas
(Universidade Federal de Santa Maria, 2019-07-05)
This work presents the synthesis and characterization of vanadium complexes and the potential of these compounds to inhibit the enzyme urease. The complexes were obtained from the aldol condensation between substituted ...
Síntese e caracterização de [2]rotaxano: estudo conformacional em solução
(Universidade Federal de Santa Maria, 2019-11-25)
Rotaxanes molecules became an important model for studying supramolecular chemistry by theirs unique motions and characteristics. In this context, this work was based in the synthesis of three molecules. One secondary ...
Método gravimétrico de Payzant em amostras de cimento asfáltico: uma investigação analítica para reduzir o consumo de reagentes e a geração de resíduos
(Universidade Federal de Santa Maria, 2019-11-25)
This work presents alternative methodologies to fractionation of petroleum asphalt cement (CAP) in sulfur species (saturated/aromatic compounds, thiophenic compounds and sulfide compounds) proposed by Payzant (1989). The ...
Síntese de 3-(trifluormetil)-4H-pirido[1,2-a]pirimidin-4-onas 2-substituídas via reação de trifluormetilação usando MFSDA
(Universidade Federal de Santa Maria, 2019-11-25)
The present work aims to perform a synthetic feasibility study following a satisfactory procedure to obtain a novel compound denominated 2-phenyl-3- (trifluoromethyl)-4H-pyrido[1,2-a]pyrimidin-4-one (4b) by using MFSDA as ...
Interação entre líquidos iônicos e óxidos de titânio e silício utilizando ressonância plasmônica de superfície
(Universidade Federal de Santa Maria, 2019-11-25)
This work presents the interactions between ionic-liquid-based active pharmaceutical ingredients (IL-APIs) bupivacaine ibuprofenate [BUP][IBU], 1,8-bis(3-methylimidazolium-1-yl) octane ibuprofenate [BisOct(MIM)2][2IBU], ...
Determinação de resíduos de agrotóxicos em uva empregando método QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2019-02-28)
Grapes, classified as fruits play important role in human diet and nutrition. They are
sources of vitamins, polyphenols, essential amino acids, and a wide range of health
benefits. Grapes are extremely rich in pigments, ...
Desenvolvimento de método para a determinação de metais no sangue e sua correlação com a leucemia linfocítica aguda
(Universidade Federal de Santa Maria, 2019-04-26)
Acute lymphocytic leukemia (ALL) is characterized as a hematological disease that originates during the development of young white blood cells, called lymphocytes. Although it is the type of cancer with the highest number ...
Investigação da adequabilidade da cromatografia de íons para a determinação de espécies de halogênios em saliva
(Universidade Federal de Santa Maria, 2019-08-15)
In this work, ion chromatography was investigated for halogens speciation analysis in
human saliva. Initially, it was used an isocratic ion chromatography system (“IC 1
System”), being evaluated: the chromatographic ...
Estudo de semi-sintéticos do ácido morônico e estudo de espectroscopia de difusão ordenada em produtos naturais
(Universidade Federal de Santa Maria, 2019-11-01)
Natural products play an important role in the discovery of new drugs, either by
isolating novel structures or obtaining semi-synthetic ones. However, due to the
complex nature, these studies are real challenges and ...