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Mostrando ítems 371-380 de 483
Preparação, caracterização e aplicação de eletrodos de nanotubos de carbono na determinação de Cr(III), Cr(VI) e flavonoides
(Universidade Federal de São Carlos, 2013-01-30)
The objective of this work is the development of a carbon nanotubes past electrode (CNTs) as electrochemical sensors in the analysis of flavonoids, (+) catechin and rutin, and Cr (III) and Cr (VI) ions, by differential ...
Estudo teórico computacional dos sistemas micelares de alquilbenzenos em diiodometano
(Universidade Federal de São Carlos, 2014-02-28)
The surfactant-like behavior of the alkylbenzenes in diiodomethane is experimentally verified, being observed, in addition to the characteristic effects on the surface tension, evidences of clusters formation. The main ...
Uso de imagens digitais e ferramentas quimiométricas para identificação e determinação de Cr (VI) em solos contaminados
(Universidade Federal de São Carlos, 2012-03-23)
The determination of toxic metals in soils is an important factor to access their quality or identify possible contamination. The element Cr has double feature: Cr (III) is essential for human beings and Cr (VI) is toxic. ...
Complexos de cobre (II) de bases de Schiff prolínicas aplicados como inibidores e miméticos funcionais da enzima Urease e à formação de 1,2,3-triazóis 1,4-dissubstituídos
(Universidade Federal de São Carlos, 2019-03-18)
In this work five Schiff base-type ligands derived from a series of reaction steps were
synthesized starting from the amino acid L-proline, in which four of them are novel
and were completely characterized by 1H, 13C, ...
Proposição de modelos de regressão para previsão de propriedades de tintas da cadeia produtiva da indústria gráfica
(Universidade Federal de São Carlos, 2019-07-30)
Quality control of inks is very important during and after the manufacturing process and is also meaningful in the consumer industries or paint applicators. For this reason, an opportunity was noticed for the development ...
Desenvolvimento e aplicação de métodos analíticos verdes para a extração de flavonoides a partir de resíduos de Passiflora edulis sims f. Flavicarpa Deg.
(Universidade Federal de São Carlos, 2018-09-27)
The concepts developed in this dissertation were guided by biorefinery assumptions, in which
residues such as food peels can be enriched. In this sense, this research had as its main
objective to develop, validate and ...
Síntese, caracterização e estudos de citotoxicidade e alvo biológico de complexos quadráticos planos contendo Tiossemicarbazonas
(Universidade Federal de São Carlos, 2019-09-20)
The diversity of cancer diseases and the side effects caused by the drugs commonly used in cancer treatment require different antineoplasic agents able to operate more specific and in a way to minimize the side effects. ...
Estudo fitoquímico e quimiossitemático de Galipea, Swinglea (Rutaceae) e avaliação do potencial biológico dos compostos isolados
(Universidade Federal de São Carlos, 2011-06-07)
The Galipea genus species classifications has been confuse since genus classification. Showing no agreement among taxonomists in several classification systems since 1823. However, Kallunki & Pirani corrected errors ...
Zirconato de cálcio: um estudo para aplicação como sensor de umidade relativa
(Universidade Federal de São Carlos, 2013-04-19)
In this work, it was used the Polymeric Precursors method (PPM). It started from a previous solution of metal cations in different concentrations, using citric acid as chelating agent and ethylene glycol as esterifying and ...
Avaliação do processo de vulcanização inversa visando a aplicação na produção de fertilizantes
(Universidade Federal de São Carlos, 2018-09-17)
Sulfur (S) is an essential macronutrient for crop development, nevertheless, its deficiency in agricultural soils has become increasingly alarming in the last decades. Despite elemental sulfur (S8) being a widely utilized ...