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Efeitos de nanopartículas de La2O3 em ratos e biodistribuição de elementos por LA-ICP-MS
(Universidade Federal de Santa Maria, 2018-03-02)
The aim of this work is to evaluate possible effects caused by oral administration of La2O3-NP in rats. Due to the lack of toxicological knowledge of La2O3-NP, the acute oral toxicity test, according to OECD 425 guidelines, ...
Determinação multiresidual de agrotóxicos em camas biológicas empregando cromatografia gasosa acoplada à espectrometria de massas
(Universidade Federal de Santa Maria, 2018-12-03)
Pesticides are used worldwide to control pests and diseases in various crops in order to avoid losses, thus increasing production. Considering the toxicity of pesticides, both for the environment and for health, there is ...
Síntese, caracterização e estudo interativo com DNA de meso-tetra(1-naftil)porfirinas e seus complexos
(Universidade Federal de Santa Maria, 2018-07-05)
This study aimed to synthesize meso-tetra(1-naphthyl)porphyrin and its metalloporphyrin
derivatives with metals of the first transition series (ZnII, CuII, NiII, CoIII, MnIII). The compounds
were characterized by elemental ...
Determinação de compostos sulfurados em amostras de asfalto de petróleo empregando cromatografia líquida com detecção pulso-amperométrica
(Universidade Federal de Santa Maria, 2018-08-01)
Among the heteroatoms present in petroleum, sulfur stands out as being the most
abundant. Henceforth it can be found on many quantities in oil derivate, such as
Petroleum Asphalt Cement (CAP). The presence of organosulfur ...
Estudo da presença de fármacos como adulterantes em suplementos alimentares empregando detecção amperométrica e voltamétrica
(Universidade Federal de Santa Maria, 2018-02-28)
The use of food supplements grows around the world every day. In order to improve physical performance,
prevent disease, maintain and improve health, obtain and / or maintain desired body weight and still fill
nutritional ...
Desenvolvimento de métodos para determinação de resíduos de trifenilestanho em água e solo por cromatografia líquida acoplada à espectrometria de massas em série
(Universidade Federal de Santa Maria, 2018-03-29)
Triphenyltin has been widely used as fungicide in several crops, but its use in irrigated rice crop was banned in Brazil because it poses a high risk to the environment. In this work, methods for determination of triphenyltin ...
Formação de ligações carbono-nitrogênio e carbonocalcogênio catalisadas por iodeto de cobre: síntese de 2- (organocalcogenil)-indolizinas
(Universidade Federal de Santa Maria, 2018-02-28)
The copper-catalyzed cyclization of propargylpyridines with diorganyl
dichalcogenides was applied to the synthesis of 2-(organochalcogenyl)-indolizines.
A systematic study of the cyclization system revealed that the ...
Síntese, estrutura e avaliação antimicobacteriana de novos 1- (espiro[croman-2,1’-cicloalcan]-4-il)-1h-1,2,3-triazóis
(Universidade Federal de Santa Maria, 2018-08-03)
This thesis describes the synthesis, structural study and antimycobacterial evaluation of a series of novel
4-(alkyl/aryl)-1-(spiro[chroman-2,1'-cycloalkan]-4-yl)-1H-2,3-triazoles having as substituent aryl = phenyl, ...
Síntese de novos pirróis derivados de aminocumarinas
(Universidade Federal de Santa Maria, 2018-07-19)
In this work, the synthesis of new pyrroles derived from aminocoumarins was
developed. First, the synthesis of pyrroles derived from 4-amino-2H-chromen-2-one
was carried out by the Paal-Knorr and Clauson-Kaas reactions, ...
Líquidos iônicos dicatiônicos: propriedades físicoquímicas e interações com fármacos
(Universidade Federal de Santa Maria, 2018-01-26)
This study presents the influence of the molecular structure of dicationic ionic liquids
(ILs) derived from imidazolium ring, on physicochemical properties, self-association and
heteroassociation. Changes in solubility ...