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Estudos eletroquímicos das ligas biocompatíveis Ti-50Zr (at.%) e Ti-13Nb-13Zr (m/m).
(Universidade Federal de São Carlos, 2004-08-23)
Studies on the anodic growth of the oxides that passivate the biocompatible alloys Ti-50Zr (at.%) and Ti-13Nb-13Zr (m/m), on the electrochemical/electrical parameters and the morphology, composition and structure of these ...
Desenvolvimento de procedimentos analíticos limpos para a determinação de cloreto e demanda química de oxigênio em águas.
(Universidade Federal de São Carlos, 2004-12-17)
The work here described deals with the development of clean analytical methods for
determination of chloride and chemical oxygen demand in water samples.
A flow injection spectrophotometric method was developed for
determining ...
Transporte de vapor de água e sorção de CO2 em filmes de polisulfona: efeito das variáveis de processamento e envelhecimento físico.
(Universidade Federal de São Carlos, 2004-08-31)
Water vapor transport properties and CO2 sorption were studied for bisphenol A Polysulfone films, PSF, prepared with different thickness via solvent casting and a compression molding. From the measurements of water vapor ...
Preparação e caracterização de compósitos de polianilina (DMcT Cu(II)) / fibra de carbono como catodos em baterias secundárias.
(Universidade Federal de São Carlos, 2004-12-17)
The composites were obtained by cyclic voltammetry and the
incorporation of Cu(II) to the Pani(DMcT) / C fiber composite was carried out by two
methods: A) Cu(II) added to the polymerization electrolyte along with the ...
Síntese e caracterização a nível nanométrico da fase Li2(M) Ti308, M=Zn, Co e Ni pelo método Pechini.
(Universidade Federal de São Carlos, 2004-06-25)
The present work describes the preparation and characterization of the spinel phases Li2ZnTi3O8, Li2CoTi3O8 and Li2NiTi3O8 synthesized by the polymeric precursor method. Polycrystalline ceramic powders of high quality ...
Construção e aplicação analítica de eletrodos de pasta de carbono modificada com ftalocianina de cobalto para determinação de analítos de interesse.
(Universidade Federal de São Carlos, 2004-04-16)
In this thesis work the development and applications of cobalt
phthalocyanine carbon paste electrode (CoPc/CPE) for voltammetric determination
(cyclic voltammetry and differential pulse voltammetry) of hydrazine in boiler ...
Busca de substâncias bioativas em plantas amazônicas: Adiscanthus fusciflorus (Rutaceae), Trichilia pallida e T. rubra (Meliaceae)
(Universidade Federal de São Carlos, 2004-08-12)
The aim of this
work was the search for antiparasitic and insecticide compounds in active extracts
from the following amazon plants: A. fusciflorus (Rutaceae), T pallida e T. rubra
(Meliaceae). The selected biological ...
Avaliação de procedimentos para preparo de amostras agronômicas visando determinação multielementar por espectrometria de emissão ótica com plasma induzido.
(Universidade Federal de São Carlos, 2004-05-21)
Sample preparation was always considered a limiting factor for sample
throughput in the analytical sequence due to its high time consumption and great
probability for error insertion in the results. Therefore, purposes to ...
Estudo e aplicações das técnicas de RMN HR-MAS e DOSY em plantas e extratos de plantas da ordem Rutales.
(Universidade Federal de São Carlos, 2004-06-23)
This work describes the implementation of two recent techniques in NMR - DOSY e HR-MAS
as a tool for the analysis of natural products mixture and in leaves of Citrus, respectively. The work begun with the technique DOSY, ...
O lúdico em Química : jogos e atividades aplicados ao ensino de Química
(Universidade Federal de São Carlos, 2004-04-01)
In this work games and ludic activities are applied to chemistry teaching. In the introduction, the constructivism aspects of the theories of cognitive development are presented. Then, the ideas and theories of both ludic ...