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Now showing items 241-249 of 249
Catalisadores de Pd suportados em La2O3-Al2O3 para a reforma do metano: influência do La na estrutura superficial, atividade e estabilidade
(Universidade Federal de São Carlos, 2006-09-01)
The steam reforming methane reaction catalysed by Pd/(x)La2O3-Al2O3 was studied using different contents of La. The Pd(x)La2O3-Al2O3 catalysts were obtained by wetness impregnation of alumina with an aqueous solution of ...
Desenvolvimento e avaliação de filmes didáticos no processo de ensino-aprendizagem de química no ensino médio.
(Universidade Federal de São Carlos, 2006-02-26)
This research aimed at analyzing the computer’s indirect usage in the Chemistry teaching-learning process in high school. For such a purpose, two short pedagogical films (SPF), which contained images ...
Síntese e avaliação da atividade biológica de uma coleção de amidas
(Universidade Federal de São Carlos, 2006-10-27)
The present study describes the preparation of amides containing the methylenedioxyphenyl group and also their activity against the leaf-cutting ant, Atta sexdens rubropilosa, its symbiotic fungus Leucoagaricus gongylophorus ...
Desenvolvimento de eletrodo de filme de bismuto depositado sobre cobre para aplicações eletroanalíticas
(Universidade Federal de São Carlos, 2007-04-04)
On this work is described the development of bismuth film electrode deposited over copper substrate for electroanalytical applications. The bismuth film electrode was deposited ex situ over a copper substrate. The ...
Estudo espectroeletroquímico e eletroanalítico de banhos de eletrodeposição de ligas prata-cobre e prata-zinco e caracterização morfológica, química e estrutural dos filmes
(Universidade Federal de São Carlos, 2008-08-26)
The purpose of this thesis was to establish the conditions for silver-copper and silver-zinc electrodeposition from ammonium hydroxide and thiourea solutions, respectively, and to investigate the effect of added EDTA and ...
Definição de metodologias para determinação de ferro em sangue de bovinos resistentes e sensíveis a carrapatos
(Universidade Federal de São Carlos, 2007-06-22)
Different forms of iron had been determined in the blood of animals with resistance and sensitivity to bovine s ticks. The determined variables were: Iron in total, plasma and serum blood, quantified by flame atomic ...
Estratégias de extração em química: substâncias húmicas em solos e cobre em cachaça
(Universidade Federal de São Carlos, 2009-01-22)
The goal of the extraction strategies here developed was to obtain final products with efficiency and reliability in a time interval as short as possible. The proposed methods are inexpensive and easily applied for different ...
Obtenção e caracterização eletroquímica do compósito polipirrol
(Universidade Federal de São Carlos, 2002-04-15)
This study was carried out to investigate the electrochemical
preparation of a composite polypyrrole / cobalt, as well as your characterization
physical-chemistry. The composite was electropolymerized on a platinum
substrate ...
Desenvolvimento de uma metodologia para determinação de Cu, Cr e As utilizando microeletrodos
(Universidade Federal de São Carlos, 2005-07-27)
Using carbon fiber microelectrode modified with a film of Hg. The employed techniques were differential pulse voltammetry coupled to the adsorptive cathodic stripping for the As and Cr and the differential pulse voltammetry ...