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Mostrando ítems 51-60 de 168
Desenvolvimento de metodologia analítica para a determinação de arsênio em fertilizantes minerais
(Universidade Federal de São Carlos, 2014-02-20)
Analytical method for the determination of As in samples of minerals fertilizers by Hydride Generation Flame Atomic Absorption Spectroscopy (HG AAS) was developed. First of all a study to check the effect of the concomitants ...
Investigação do potencial antimicrobiano de plantas do cerrado no controle de micro-organismos simbiótico da Diabrotica speciosa
(Universidade Federal de São Carlos, 2014-03-28)
In the cerrado biome it is estimated approximately 160.000 species of plants, animals and fungi that, through their history have been exposed to complex interactions. Those interactions have created a complex system of ...
Preparação de vidros e vitrocerâmicas no sistema SbPO4-PbO-ZnO dopados com manganês e ferro
(Universidade Federal de São Carlos, 2014-07-15)
In the present research project a new glass composition containing SbPO4 ZnO PbO was obtained by melt quenching technique. After a brief study of the matrix, a composition was chosen and doped with MnO e Fe2O3 in quantities ...
Estudo da viabilidade do uso de métodos de segunda ordem e RMN na elaboração de fingerprint de bauhinia forficata baseado em seu extrato bruto
(Universidade Federal de São Carlos, 2014-10-30)
Given the large number of species of Bauhinia and great morphological similarity between them, it is necessary the development of robust analytical techniques in quality control of plants used as herbal medicines, since ...
Crescimento anódico e caracterização de óxidos coloridos de titânio em eletrólitos alternativos
(Universidade Federal de São Carlos, 2015-01-23)
A Studies on the anodic growth of oxides that passivate the biomaterial titanium, and their electrochemical, morphological and structural parameters were carried out in this work. The oxides were obtained galvanostatically ...
Uso de biotemplates na obtenção de microtubos com nanopartículas de ouro
(Universidade Federal de São Carlos, 2014-02-14)
Recently, the studies in the area of hybrid materials composed by biological structures have been of great interest, since they are considered versatile biotemplates in wich referred to the organization of nanostructured ...
Sobre a síntese de pirróis 3,4-dissubstituídos e seus correspondentes derivados porfirínicos
(Universidade Federal de São Carlos, 2014-02-28)
In this work we have developed the synthesis of 3,4-disubstituted pyrroles, aiming at the preparation of strategically designed (continue...)
Terpenóides e seu metabolismo em fungos: um estudo de Scleroderma sp. e Xylaria sp.
(Universidade Federal de São Carlos, 2011-08-05)
In the present work, the lanostane triterpenes Lanosta-8,24-diene-3β,23-diol and Lanosta-8,23-diene-3β,25-diol were isolated from the basidiomycete Scleroderma sp., an extremely rich source of triterpenes and not ...
Influência da presença de líquidos iônicos no comportamento térmico, termo-mecânico e nas propriedades de transporte em membranas de policarbonato obtidas via casting
(Universidade Federal de São Carlos, 2014-02-25)
New alternatives to the use of polymeric membranes as solid electrolyte in fuel cells have been considered , in order to find solutions to recurrent obstacles that limit the performance of these cells, the dependence of ...
Efeito dos íons Ni2+ nas propriedades estruturais, ópticas e morfológicas do tungstato de prata
(Universidade Federal de São Carlos, 2015-07-17)
The tungstates are important compounds and known for their optical properties. In this work, solid solutions with nickel silver tungstate, 𝐴𝑔2−2𝑥𝑁𝑖𝑥𝑊𝑂4, ...