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Proposta de uma nova função de autocorrelação para o estudo do meandro do vento horizontal
(Universidade Federal de Santa Maria, 2016-06-07)
In this study is propose a new mathematical expression to describe the observed meandering
autocorrelation functions in low-wind speed. The analysis utilizes a large
number of the data to show that the new proposed theoretical ...
Síntese de copolímeros em bloco por reações one-pot com processos RAFT e ROP simultâneos
(Universidade Federal de Santa Maria, 2016-02-04)
The present work describes a methodology of controlled synthesis of block copolymers by one-pot reactions involving simultaneous RAFT and ROP processes mediated by a bifunctional compound which acts as a chain transfer ...
HPAs em águas superficiais e efluente hospitalar: degradação por PAOs e desenvolvimento de métodos para determinação e identificação de subprodutos
(Universidade Federal de Santa Maria, 2016-02-26)
In this study, was optimization an analytical method for identification and quantification method of Polycyclic Aromatic Hydrocarbons (PAHs) in surface water and hospital effluent samples. High Performance Liquid Chromatography ...
Determinação de POPs e agrotóxicos em leite materno empregando cromatografia a gás acoplada à espectrometria de massas com ionização química negativa (GC-NCI-MS)
(Universidade Federal de Santa Maria, 2016-03-31)
The Stockholm Convention was the first global attitude trying to preserve human health and the environment of the indiscriminate use of persistent organic pollutants (POPs), especially pesticides, which are characterized ...
Síntese e avaliação da atividade antioxidante de calcogenilazidas e calcogeniltriazóis
(Universidade Federal de Santa Maria, 2016-03-24)
In this work, we developed a synthetic route for obtaining β-aryl-chalcogenoazide and β-aryl-chalcogenotriazole (S, Se and Te) derived from L-amino acids (L-phenylalanine, L-valine and L-leucine). We obtained a compounds ...
Síntese de 4-organocalcogenil-1h-isocromen-1-iminas e 3-(alquil calcogenoil-2-benzofenil[b]selenofeno[2,3-d] calcogenofenos via reações de ciclização mediadas por sais de ferro
(Universidade Federal de Santa Maria, 2016-08-03)
In this work we developed the efficient and selective heterocyclic product synthesis
using as electrophilic agent a ferric chloride combinated with diorganyl
dichalcogenides under mild conditions. In the first part of this ...
Síntese, análise estrutural e avaliação da atividade catalítica mimética da superóxido dismutase e peroxidases de complexos derivados do piridoxal e cobre
(Universidade Federal de Santa Maria, 2016-03-31)
This work presents the synthesis and characterization of copper complexes
that mimic the activity of the superoxide dismutase enzyme, which operates in the
elimination of reactive oxygen species or in the activation of ...
Reações de β-enaminodicetonas com ncn dinucleófilos: obtenção de pirimidinas e sistemas heterocíclicos fundidos
(Universidade Federal de Santa Maria, 2016-08-26)
In this study the reactivity of β-enamino diketones [RC(O)C(=CHNMe2)C(O)CO2Et, R = C6H5, 4-Me-C6H4, 4-MeO-C6H4, 4-F-C6H4, 4-Br-C6H4, 4-NO2-C6H4, tien-2-il] with NCN bisnucleophiles as amidine and guanidine was investigated. ...
Determinação de contaminantes orgânicos em matrizes complexas utilizando método QuEChERS e cromatografia líquida acoplada à espectrometria de massas de alta resolução
(Universidade Federal de Santa Maria, 2016-03-04)
The presence of organic contaminants in the environment and in food have become a major concern due to the harmful effects to living organisms. Such contaminants may be pesticides used in agriculture for the control of ...
Decomposição de amostras botânicas e leite em pó utilizando peróxido de hidrogênio em sistema de alta pressão e posterior determinação elementar por ICP OES e ICP-MS
(Universidade Federal de Santa Maria, 2016-06-28)
Recently, there is an appeal to reduce the use of toxic reagents in a great effort for the development of analytical "green" methods. Thus, the paper proposes the elemental analysis of botanical and food samples without ...