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Determinação de cálcio em petróleo utilizando colorimetria com imagens digitais
(Universidade Federal de Santa Maria, 2022-03-18)
In this work, a method was developed for the determination of Ca in petroleum using
colorimetry with digital images with the PhotoMetrix application. For this purpose, a
portable system was used based on the capture of ...
Micelas de copolímeros em bloco à base de maltoheptaose contendo ftalocianina de magnésio para aplicação em terapia fotodinâmica
(Universidade Federal de Santa Maria, 2022-02-15)
The development of new nanocarriers for the so-called third-generation photosensitizers (FS) has contributed significantly to the evolution of photodynamic therapy (PDT). Due to its maximum absorption at wavelengths within ...
Síntese e caracterização de [2]rotaxanos: uso de eixos moleculares com estações succinamida e oxoalquil-triazol
(Universidade Federal de Santa Maria, 2022-03-04)
The following work presents the synthesis of molecular thread and molecules of rotaxanes containing two stations, succinamide and oxoalkyl-triazole. The synthetic process of the molecular thread was carried out by “click” ...
Determinação de resíduos de ditiocarbamatos, empregando cromatografia gasosa acoplada a espectrometria de massas, em erva-mate (Ilex paraguariensis) produzida na América do Sul
(Universidade Federal de Santa Maria, 2022-02-28)
Dithiocarbamates (DTC) fungicides have characteristics related to high instability when
in the presence of moisture and oxygen, thus requiring special preparation of the
sample to be worked on, as well as the development ...
Determinação de contaminates inorgânicos em nanotubos de carbono por ICP-OES e ICP-MS
(Universidade Federal de Santa Maria, 2016-03-05)
In this work, microwave-assisted wet digestion using the single reaction chamber (MAWD-SRC) and microwave-induced combustion (MIC) methods were investigated for the decomposition of carbon nanotubes (CNTs) and further ...
Avaliação da capacidade antioxidante in vitro e in vivo contra radicais peroxila e hidroxila em amostras de plantas medicinais
(Universidade Federal de Santa Maria, 2010-07-26)
The present work reports the development of new methodologies to evaluate the in vitro and in vivo antioxidant capacity against peroxyl and hydroxyl radicals in five medicinal plant samples (Matricaria chamomilla L., Psidium ...
Síntese e atividades antimicrobiana/antioxidante de 1-(pirazolin-1-il)-2-[(aril/heteroaril)metileno] carboidrazidas trifluormetil substituídas
(Universidade Federal de Santa Maria, 2010-09-16)
This work initially describes the regioselective synthesis of a series of 3-alkyl(aryl/heteroaryl)-5-trifluoromethyl-5-hydroxy-4,5-dihydro-1H-pyrazole-1-carbohydrazides (2) from the monocyclocondensation reaction of ...
Novos Espirocromenil-Trifluoretanonas a partir de Reações de Trifluoracetilação de Adutos de Kabbe e seus Espiro[diidrocromeno-cicloalcan]pirazóis e Isoxazóis Derivados
(Universidade Federal de Santa Maria, 2013-12-03)
This work describes firstly an efficient and regioselective method for the synthesis of a new series of 2,2,2-trifluoro-1-[4-methoxy-spiro(2H-chromen-2,1 -cycloalkan)-3-yl]ethanones from the Kabbe adducts (spiro[chroman-2,1 ...
Síntese de 1-[aril(heteroaril)]-5-(3,3,3-trifluor-2-oxopropilideno) pirrolidin-2-onas
(Universidade Federal de Santa Maria, 2005-10-31)
The synthesis of a series of ten 1-[aryl(heteroaryl)]-5-(3,3,3-trifluoro-2-oxopropilideno) pyrrolidin-2-ones by intramolecular cyclocondensation reaction of methyl 7,7,7-trifluoro-4-[aryl(heteroaryl)amino]-6-oxo-4-heptanoates ...
Síntese de 2-[3h-pirazol-2-il]trifluormetilpirimidinas Alquil, aril e heteroaril substituidas
(Universidade Federal de Santa Maria, 2004-07-14)
This work describes a general methodology for the synthesis of a novel series of 4-alkyl, 4-aryl, heteroaryl-2-[5-methyl-4-(2-hidroxyethyl)-3-oxo-1,2-dihydro-3H-pyrazol-2-yl]-6(4)-trifluoromethylpyrimidines. The precursors ...