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Influência da ordem-desordem estrutural na fotoluminescência do CaTiO3:Sm
(Universidade Federal de São Carlos, 2007-03-08)
Some properties of the materials, such as ferroelectric and optic, are dependents to structural organization of the material. Thus, to know the order disorder degree at short,
intermediate and long range is important to ...
Caracterização eletroquímica de eletrodos de diamante dopado com boro em função de seu pré-tratamento
(Universidade Federal de São Carlos, 2007-10-26)
The effect of galvanostatic electrochemical pre-treatments
on the surface composition and wettability of boron-doped diamond (BDD) electrodes was characterized by X-ray photoelectron spectroscopy (XPS) analyses and contact ...
Desenvolvimento de procedimentos em fluxo envolvendo reatores em fase sólida e microssistema analítico construído com LTCC (Low Temperature Co-fired Ceramics) para a determinação de analitos de interesse farmacêutico
(Universidade Federal de São Carlos, 2009-03-20)
The employment of flow injection systems to determination of N-acetylcysteine, captopril, dipyrone and fluoxetine hydrochloride in pharmaceutical formulations was investigated. The N-acetylcysteine was determinated employing ...
Caracterização molecular de biopolímeros em solução utilizando simulação computacional
(Universidade Federal de São Carlos, 2009-02-17)
Computer simulation methods were used to characterize the structure and molecular properties of natural and synthetic biopolymers in aqueous solution. The polysaccharides chitin and chitosan, and aliphatic polypeptides ...
Estudo das eletrodeposições de lítio e gálio sobre Au(111) e HOPG utilizando líquido iônico como eletrólito
(Universidade Federal de São Carlos, 2009-03-06)
In the present work, the electrodepositions of lithium and gallium on Au(111) and HOPG (highly oriented phyrolytic graphite) were studied using ionic liquids (ILs) as electrolytes and employing the following techniques: ...
Utilização de métodos quimiométricos aliados a RMN na caracterização dos diferentes tipos de cafés comerciais
(Universidade Federal de São Carlos, 2007-03-02)
Coffee is an important product of Brazilian agribusiness. Nevertheless, the commercial evaluation of its quality is based upon subjective methods and this requires the methodologies development that provides information ...
Caracterização de imagens em livros didáticos e suas contribuições para o processo de significação do conceito de equilíbrio químico
(Universidade Federal de São Carlos, 2009-06-30)
This work studies images contained in Chemistry textbooks approved by the PNLEM/2007. The goals of this research were: a) to characterize these images, discriminating those that compose Chemical Equilibrium Chapters, ...
Aplicação de nanopartículas em filmes utilizados em embalagens para alimentos
(Universidade Federal de São Carlos, 2009-04-30)
Dispersions composed of chitosan (CS) were obtained by the template polymerization (CS-PMAA) and ionotropic gelatinization (CS-TPP). The nanoparticles were analyzed by FT-IR analysis, particle size, zeta potential, electron ...
Desenvolvimento e aplicação de eletrodos à base de nanotubos de carbono
(Universidade Federal de São Carlos, 2008-12-11)
The electrodes based on carbon nanotubes (CNTs) were
prepared in the form of paste of CNTs/Graphite and film on glassy carbon electrode. These electrodes were electrochemically characterized by their response in potassium ...
Estrutura e propriedade luminescente da solução sólida de titanato de chumbo, estrôncio e cálcio
(Universidade Federal de São Carlos, 2008-12-12)
The lead, strontium and calcium titanate, (Pb, Sr, Ca)TiO3 (PSCT), is a solid material, which has its structure as a prototype of mineral perovskita (CaTiO3) with general formula ABX3. The solid solution of PSCT has been ...