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Estudo químico de Spiranthera odoratissima e atividades biológicas em formigueiros de Atta sexdens rubropilosa
(Universidade Federal de São Carlos, 2007-04-25)
This work describes the biossay-guided the phytochemical study of Spiranthera odoratissima (RUTACEAE), with test against the symbiotic fungus Leucoagaricus gongylophorus, leaf-cutting ant Atta sexdens rubropilosa and ...
Estudo de propriedades de filmes de óxidos anódicos crescidos em diferentes eletrólitos ácidos sobre o biomaterial Ti-50Zr at.%
(Universidade Federal de São Carlos, 2008-05-27)
Studies on the influence of the nature of the growth electrolyte on the properties of oxide films grown on the Ti-50Zr at.% alloy were carried out. The results obtained through the different measurements done (chronoamperometry, ...
Desenvolvimento de banhos alcalinos para eletrodeposição de Pb-Sn e Pb-Cu, na presença de aditivo orgânico. Caracterização do processo de eletrodeposição e dos filmes
(Universidade Federal de São Carlos, 2007-10-26)
Alkaline baths containing sorbitol, tartrate or EDTA were developed in this work for Pb-Sn and Pb-Cu electrodeposition on platinum substrate. The characterization of Pb-Sn and Pb-Cu plating baths by potentiometric titration ...
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 ...
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 ...
Síntese e avaliação biológica de derivados de carboidratos e nucleosídeos
(Universidade Federal de São Carlos, 2005-02-25)
In the last few years, the carbohydrate chemistry has been growing surprisingly, especially because of the diversity of biological applications of this class of compounds. This present work aimed to synthesize and evaluate ...
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 ...
Aspectos químicos envolvidos nas interações de Citrus com fitopatógenos
(Universidade Federal de São Carlos, 2007-08-10)
This present thesis describes the development of analytical methodologies involving the HPLC-PDA-MS/MS coupling to verify the production of both polar and non-polar metabolites in orange trees produced by grafting Citrus ...
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 ...