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Mostrando ítems 161-170 de 249
Fotoluminescência de SrTiO3 dopado com Al, Y, Cr, V e Nb.
(Universidade Federal de São Carlos, 2003-08-08)
It was studied the effect of the dopants, Al, Y, Cr, Nb and V, on the photoluminescent properties of films and powders of amorphous strontium titanate. With this purpose the techniques of SEM, XRD, UV/Visible spectroscopy ...
Estudo das propriedades estruturais e desenvolvimento de eletrodos modificados de novas porfirinas polimetaladas.
(Universidade Federal de São Carlos, 2003-09-12)
In this work we synthetisized and characterized different polymetallated pophyrins, using as precursors 5,10,15,20-piridilporphyrin and [RuCl2(CO(DMF)(PPh3)2], cis-[RuCl2(bipy)(dppb)] and mer-[RuCl3(dppb)(H2O)] as peripherical ...
Estudo do perfil motivacional para o aprendizado de química
(Universidade Federal de São Carlos, 2009-11-27)
This work analyses the factors that could influences the Chemistry learning. The motivation is considered a fundamental construct for the scholar learning. The motivation is related to internal or external causes that lead ...
Dióxido de estanho nanoestruturado dopado com terras raras como catalisador e sensor de gases.
(Universidade Federal de São Carlos, 2004-02-10)
This work presents and discusses results of the effects of doping on rare earth-doped nanosize SnO2, obtained using the polymeric precursor method and prepared at different annealing temperatures. Only the cassiterite phase ...
Pigmentos cerâmicos nanométricos a base de CeO2 dopado com Pr6O11, NiO e CoO.
(Universidade Federal de São Carlos, 2005-09-30)
In the last few years, the study of ceramic materials has increased very fast, mainly studies related to advanced ceramics. The several applications of these materials as ceramic pigments in nanometric scale justify more ...
Medidas de condutividade na caracterização de complexos inorgânicos: um levantamento bibliográfico.
(Universidade Federal de São Carlos, 2006-08-01)
In this work was done a review of the data published in inorganic
chemistry journals (Inorganic Chemistry and Inorganica Chimica Acta in the
years 1973-2005 and 1983-2005, respectively) on values of measurements of
conductivity ...
Complexos de rutênio contendo aminoácidos, com propriedades citotóxicas em células tumorais
(Universidade Federal de São Carlos, 2009-06-17)
The synthesis of transition metal compounds mainly with ruthenium, has been increasing along the time, since compounds of this kind have many applications in the biological fields, among them, as anticancer agent. In this ...
Determinação de fontes de hidrocarbonetos policíclicos aromáticos e alifáticos em sedimentos de ambientes aquáticos
(Universidade Federal de São Carlos, 2006-04-20)
Numerical values of polycyclic aromatic hydrocabons and n-alkanes distribution indexes of
sediments are important tools to elucidate the origins of hydrocarbons mixtures. Polycyclic
aromatic ratios are sensitive indicators ...
Métodos analíticos alternativos para avaliação da qualidade de forrageiras utilizadas na nutrição animal
(Universidade Federal de São Carlos, 2007-07-21)
Alternative methods were developed for some determinations performed in routine by animal nutrition laboratories, in order to increase laboratory efficiency and reduce costs maintaining analytical quality. In the first ...
Desenvolvimento de métodos por cromatografia líquida de alta eficiência muldimensional para validação do uso do biorreator gliceraldeído-3-fosfato desidrogenase de Trypanosoma cruzi para triagem de inibidores
(Universidade Federal de São Carlos, 2008-08-27)
This work reports the quantification of NADH formed by an immobilized enzyme reactor (IMER) of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) of T. cruzi using multidimensional high-performance liquid chromatography. For ...