Buscar
Mostrando ítems 11-20 de 63
Nanopartículas de Pt-TiO2 com propriedades catalíticas e fotocatalíticas
(Universidade Federal de São Carlos, 2013-04-23)
In the first part of this work, a binary system composed of TiO2 and Pt particles was used as photocatalyst for degradation of methyl orange under different lighting conditions: simulated sunlight and ultraviolet. In these ...
Nanocompósitos de polietileno linear de baixa densidade (LLDPE)/argila montmorilonita: processamento, morfologia e propriedades
(Universidade Federal de São Carlos, 2013-06-25)
Polymer nanocomposites filled with lamellar silicates are considered hybrid materials (organic-inorganic) of great interest both in industry and the universities, since their properties are superior to neat polymer. In ...
Síntese e avaliação da atividade biológica de alcaloides e derivados n-heterociclos
(Universidade Federal de São Carlos, 2013-09-14)
4-Quinolinone derivatives and hydantoins are important classes of cyclic nitrogen compounds which have very interesting biological activity against a variety of biological targets. Phytochemical studies of plants of the ...
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 ...
Estudo da atividade eletrocatalítica de multicamadas metálicas de Ir/Pt e Cu/Pt eletrodepositadas sobre Pt(policristalina) para eletrooxidação de moléculas orgânicas pequenas
(Universidade Federal de São Carlos, 2013-09-26)
The search for alternative energy sources stead fossil fuel has driven the development of new energy generating devices. Among these, the Direct Alcohol Fuel Cells are a kind of device that directly convert chemical energy ...
Estudos fitoquímicos e avaliação da atividade antitumoral de extratos vegetais de Casearia sylvestris nanoencapsulados
(Universidade Federal de São Carlos, 2013-03-26)
The term cancer refers to neoplasias that are characterized by uncontrolled growth of cells that have some kind of genetic mutation. Prostate cancer is the cancer with the highest incidence in men. In its initial phase, ...
Nanocompósitos para a liberação controlada de compostos triazínicos aplicados como defensivos agrícolas
(Universidade Federal de São Carlos, 2013-08-02)
This research proposed a preparation method for a nanocomposite, able to control the delivery of high quantities of an active compound, inserted on its matrix, in order to prospect an application for the controlled delivery ...
Síntese e caracterização de nanopartículas de Nb2O5 e estudo de suas propriedades fotocatalíticas
(Universidade Federal de São Carlos, 2013-08-01)
In this study, the use of niobium oxide nanoparticles (Nb2O5) prepared through the OPM method as photocatalysts for the degradation of pollutants was investigated, describing the dependence on hydrothermal parameters ...
Sensores eletroquímicos contendo supramoléculas de complexos periféricos de rutênio: obtenção e aplicações
(Universidade Federal de São Carlos, 2013-02-28)
In this work were performed the reaction of the 5, 10, 15, 20- (tetrapyridil)porphyrin (TPyP) with the cations: Mn(III), Zn(II), Fe(III) and Ga(III) promoting the insertion of these metals in the porphyrin ring center. The ...
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 ...