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Itens para a visualização no momento 201-210 of 249
Determinação de polifenóis totais utilizando sistemas de análise por injeção em fluxo.
(Universidade Federal de São Carlos, 2004-02-17)
In this dissertation, three flow injection analysis methods for total polyphenol
determination in tea and acacia s tannins commercial extracts were developed. The first method is based on the reaction between the polyphenol ...
Qualidade da água e fluxos de nutrientes na interface sedimento-água nas represas do Rio Tietê.
(Universidade Federal de São Carlos, 2003-04-30)
The first Law of Fick in one dimension was utilized for the calculation of those fluxes.
In this work was calculated the concentrations of the following chemical species: nitrate, nitrite, ammonium, total nitrogen, ...
O envolvimento do aluno no processo de ensino - aprendizagem durante a realização de atividades experimentais.
(Universidade Federal de São Carlos, 2005-06-10)
This work had as an objective to identify the motivation level of the students who belong to three public grade schools in the city of São Carlos with different socio-economical
realities for the chemistry learning. ...
A reação de Diels-Alder de p-Benzoquinonas em versão multicomponente
(Universidade Federal de São Carlos, 2005-08-24)
A study of the multicomponent version of the Diels-Alder reaction of para-benzoquinones has been proposed, with the idea of uniting the versatility of the reaction with the simplicity of the methodology. The key step ...
Quelato complexos de oxovanádio (IV): potenciais mimetizadores de insulina.
(Universidade Federal de São Carlos, 2004-08-18)
Based on studies of another studies that explored the capacity
of oxovanadium(IV) ion to mimic insulin, we had the idea to contribute with this line of research. For this, our choice of ligands was trans - 1,2 ...
O problema dos fenômenos de dirupção e de reação zonal no sistema Pb/PbSO4/H2SO4
(Universidade Federal de São Carlos, 2007-05-03)
Desenvolvimento de pigmentos nanométricos encapsulados.
(Universidade Federal de São Carlos, 2004-04-08)
In the present study, perovskite-type NiTiO3 ceramic pigments were
prepared by the polymeric precursor method, originally proposed by Pechini.
The transluscent and viscous polymeric resin was characterized by
thermogravimetric ...
A reação de Diels-Alder entre p-Benzoquinonas 1,3-Pentadienos-1-Substituídos.
(Universidade Federal de São Carlos, 2004-07-23)
In this dissertation, studies are described on the cycloaddition of 1-silyloxypentadiene-
1,3 and 1-acylamino-pentadiene-1,3 with alkylated para-benzoquinones.
The first methodology involves cycloaddition reactions of ...
Utilização de modelos moleculares no ensino de estequiometria para alunos do ensino médio.
(Universidade Federal de São Carlos, 2005-04-11)
The lack instructional materials for science
teaching is a common problem in Brazil, and concerning to chemistry teaching in
particular this problem can be observed even in more developed countries. Although
molecular ...
Estudo mecânico-quântico ab initio da propriedade fotoluminescente em compostos PbWO4, BaWO4, SrWO4 e dos processos de intercalação e difusão de Li no composto Li1+xTi2O4
(Universidade Federal de São Carlos, 2008-04-18)
Computational simulation by means of quantum-mechanical calculations is becoming an increasingly important tool in scientific research of materiaIs due the great advances in the performance of computers and in the development ...