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Itens para a visualização no momento 31-40 of 82
Desenvolvimento de método colorimétrico utilizando dispositivo portátil para a determinação de cloreto em petróleo
(Universidade Federal de Santa Maria, 2020-09-24)
In this work, a colorimetric method was developed for the determination of chloride in crude oil using a portable device based on digital images obtained with an endoscopic camera and data processing using the PhotoMetrix ...
Síntese, análise estrutural e avaliação do potencial inibitório frente à enzima tirosinase por complexos de oxidovánadio(IV) e dioxidovanádio(V) derivados de hidrazidas aromáticas.
(Universidade Federal de Santa Maria, 2021-10-07)
Ten ligands were synthesized through aldol condensation of salicylic aldehyde and pyridoxal hydrochloride (C1AS, C2AS, C3AS, C4AS, C5AS, C1P, C2P, C3P, C4P and C5P) with five primary amines from p-substituted aromatic ...
Hidrotiolação regio e estereosseletiva de sistemas diínos: síntese e reatividade de (Z)-tioeninos
(Universidade Federal de Santa Maria, 2022-03-10)
Sulfur compounds are important building blocks in Organic Chemistry. The class of vinyl sulfides stands out for its versatility and applicability in the synthesis of new structures. Due to the relevance of these compounds, ...
Síntese e propriedades fotofísicas de 2-(5-aril-4,5-diidro-1H-1-fenilpirazol-3-il) fenóis e sistemas pirazolil-triazólicos derivados
(Universidade Federal de Santa Maria, 2021-11-26)
The present work describes the synthesis, structural study and evaluation of the photophysical properties of a series of eight 1,3,5-triaryl-substituted 2-pyrazolin derivatives, as well as their application in obtaining a ...
Síntese e dinâmica rotacional de [2]rotaxanos contendo 1-benzidrilpiperazina no eixo molecular
(Universidade Federal de Santa Maria, 2020-02-03)
This dissertation describes the synthesis of molecular the threads ((E)-1,4-bis(4-benzydrylpiperazin-1-yl)but-2-ene-1,4-dione, 1,4-bis(4-benzydrylpiperazin-1-yl)butan-1,4-dio ne, (E)-1,4-bis(dibutylamine)but-2ene-1,4-dione ...
Determinação multiclasse de agrotóxicos em camas biológicas empregando cromatografia líquida acoplada a espectrometria de massas
(Universidade Federal de Santa Maria, 2022-02-14)
Pesticides are used worldwide in the agricultural production of different crops in order to avoid losses in production due to the attack of pests and diseases. Due to the increase in food production, consequently, the ...
Determinação de compostos aromáticos nitrogenados fixos e voláteis em matrizes asfálticas empregando cromatografia líquida de alta eficiência (HPLC)
(Universidade Federal de Santa Maria, 2021-12-16)
Petroleum asphalt cement is the main source of asphalt cement today. The handling and application of the binder on the pavement is only possible with the use of high temperatures, which causes the matrix to undergo an aging ...
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” ...