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Investigação de componentes químicos da casca do caule de Luehea divaricata martius (malvaceae) e suas potenciais atividades biológicas
(Universidade Federal de Santa Maria, 2016-06-24)
Luehea divaricata, known as açoita-cavalo , is a Brazilian native species and has few reported in the literature. Phytochemical investigation of the methanolic crude extract and its fractions (acid ethereal, basic ethereal, ...
Síntese de espiro[cromeno[4,3-d]pirimidinas-5,1 -cicloalcano] e 5,6-diidrobenzo[h]quinazolinas trifluormetil substituídas
(Universidade Federal de Santa Maria, 2016-02-23)
The present dissertation initially describes new methods for the synthesis of 4-(trifluoromethyl)-5,6-dihydrobenzo[h]quinazolines and 4-(trifluoromethyl)spiro[chromeno[4,3-d]pyrimidines-5,1'-cycloalkane], as new trifluoromethyl ...
Complexos metálicos derivados de ligantes tripodais: Síntese, análise estrutural, aplicação como miméticos da atividade catalítica da superóxido dismutase e avaliação de citotoxidade frente à Caenorhabditis elegans in vivo.
(Universidade Federal de Santa Maria, 2016-02-29)
The proposed dissertation presents the synthesis, characterization and mimetic
application of complexes containing metals cations of the first transition series like CuII, NiII,
MnII and FeIII. As starting materials have ...
Desenvolvimento de metodologia para a determinação de contaminantes inorgânicos em polímeros por LA-ICP-MS
(Universidade Federal de Santa Maria, 2016-02-23)
In the present work a new calibration strategy was evaluated for further determination of As, Ba, Cd, Cr, Pb, Sr and Zn in food packaging by laser ablation and inductively coupled plasma mass spectrometry (LA-ICP-MS). The ...
Determinação de halogênios em mel após decomposição com peróxido de hidrogênio usando sistema de alta pressão
(Universidade Federal de Santa Maria, 2016-02-12)
In this work the sample preparation method for honey decomposition using H2O2 in alkaline medium at high pressure system for further determination of F, Cl, Br and I was evaluated. In this way, some parameters such as ...
Avaliação energética do uso de álcoois combustíveis em motores de combustão interna
(Universidade Federal de Santa Maria, 2016-03-29)
The present work studies the use of a two-zone computer model to simulate the operation of an internal combustion engine with spark ignition fueled with alcohol fuels and gasohol. To fit the model to the experimental data, ...
Determinação de contaminantes emergentes em água utilizando microextração adsortiva em barra (BAμE) e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2016-08-25)
The emerging pollutants are substances that enter continuously in the environment and are being more recognize due to the advancement of instrumental and sample preparation techniques. These contaminants include several ...
Determinação de corantes sintéticos em bebidas isotônicas empregando extração em fase sólida dispersiva e HPLC-UV/Vis
(Universidade Federal de Santa Maria, 2016-08-05)
Sports drinks are specially formulated for people who are undertaking physical activity, being mainly composed by carbohydrates, electrolytes and vitamins. Synthetic dyes are food additives commonly used in sports drinks ...
Determinação voltamétrica de tiofenos, sulfetos, sulfóxidos e sulfonas em matrizes asfálticas empregando eletrodo de mercúrio
(Universidade Federal de Santa Maria, 2016-02-26)
Sulfur compounds in petroleum asphalt cement (CAP) are related to quality parameters such as reactivity, corrosivity, pollution potential and are directly related to the aging of the asphalt. In this work, a voltammetric ...
Fluxo de coerência quântica para um qubit evoluindo sobre a ação de canais quânticos
(Universidade Federal de Santa Maria, 2016-08-23)
Quantum Coherence (QC) has a fundamental role in Quantum Mechanics (QM). It has
been studied since the emergence of QM. However, this quantum feature is easily destroyed
when a physical system interacts with the environment. ...