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Mostrando ítems 21-30 de 221
Síntese e caracterização de espinélios de lítio e manganês obtidos via rota hidrotermal assistida por microondas
(Universidade Federal de São Carlos, 2014-11-28)
Lithium and manganese oxide in spinel phase (LiMn2O4) was obtained by microwave-assisted hydrothermal route starting from completely soluble reagents. For this, a mixture of potassium permanganate and lithium hydroxide ...
Desenvolvimento de métodos analíticos empregando a espectrometria de absorção atômica sequencial rápida com atomização em chama
(Universidade Federal de São Carlos, 2012-06-01)
The aim of this PhD thesis was to develop analytical methods employing fast sequential flame atomic absorption spectrometry (FS-FAAS). In the first part of this study, a fast and simple method is proposed for the determination ...
Desenvolvimento de processos químicos seguindo os princípios adotados pela química verde: redução e conversão de CO2 usando compostos de Mn(I)
(Universidade Federal de São Carlos, 2014-10-09)
Due to its versatile chemistry and ability to stabilize metals with low oxidation states, carbonyl compounds of transition metals play an important role in various fields of organometallic chemistry. In our research group, ...
Investigação de processos colisionais e reacionais para cromo e vanádio em interface de espectrômetro de massa com plasma indutivamente acoplado
(Universidade Federal de São Carlos, 2013-03-14)
The analytical capability of inductively coupled plasma mass spectrometers (ICPMSs) and their wide use in different fields of science are well known. However some drawbacks, such as the occurrence of isobaric and polyatomic ...
Síntese e propriedades fotocatalíticas do titanato de bismuto obtido pela rota dos complexos oxidantes de peróxido
(Universidade Federal de São Carlos, 2014-08-14)
The welfare of the population and technological progress of our society largely depend on the development and the intensive use of synthetic materials, generating a large amount of residual chemicals and high energy ...
O museu de ciências como promotor da motivação: lembranças do público do setor de química do CDCC/USP
(Universidade Federal de São Carlos, 2014-05-30)
This work refers to a study of the motivational aspects found in the mini courses offered by the Chemistry Sector of the Center for Cultural and Scientific Dissemination (Centro de Divulgação Científica e Cultural CDCC). ...
Análise de glucuronídeos em urina humana com injeção direta de amostras por cromatografia líquida acoplada à espectrometria de massa
(Universidade Federal de São Carlos, 2013-12-17)
This work describes the results obtained from studies carried out to quantify phenyl-β-D-glucuronide (FG) and nitrophenyl-β-D-glucuronide (NFG) in human urine by direct injection sample using LC-MS/MS system. The ...
Estudo da variação do perfil químico de citros com HLB e sadios, buscando informações sobre mecanismo de defesa
(Universidade Federal de São Carlos, 2014-03-26)
This paper describes the variation of the chemical profile study of citros after inoculation of the bacterium "Candidatus Liberibacter asiaticus", responsible for Huanglongbing (ex greening), one of the most serious diseases ...
Complexos de rutênio bioativos: síntese, caracterização e ensaios biológicos
(Universidade Federal de São Carlos, 2014-03-28)
Ru(II) polypyridyl anticancer compounds is drawing increasing attention to drug development. The luminescence of this type of complex open wide possibilities of using molecular systems in biological applications. Herein ...
Nanomateriais organofuncionalizados e suas aplicações em catálise: associando as vantagens da catálise homogênea com as da heterogênea
(Universidade Federal de São Carlos, 2013-06-14)
We have immobilized proline, like prolinamide, by using flash chromatography with commercial grade silica and magnetite nanoparticles that were synthesized in our lab. The degree of functionalization has been determined ...