Physics Adsorption
Mostrando 1-8 de 8 artigos, teses e dissertações.
-
1. Fabricação e caracterização de filmes automontados de PAH/BSA / Fabrication and characterization of LbL films of PAH / BSA
In the last years techniques have been developed for the development of science and technology concerning all science fields, such as physics, chemistry and biology. The study of the protein adsorption processes on the solid surfaces is of great importance in the development of biocompatible materials. The Layer-by-Layer deposition technique, where self-asse
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/08/2010
-
2. Caracterização de argilas bentonitas e diatomitas e sua aplicação como adsorventes
Five samples of natural clays denominated: diatomite, CN-20, CN-29, CN-40 and CN-45 from Aliança Latina LTDA were characterized by differents supplementary techniques such as: XRD, chemical analysis, adsorption N2 measurements, infrared spectroscopy analysis, thermogravimetric analysis. Clays were tested in adsorption of blue methylene. All of isotherms adj
Química Nova. Publicado em: 2009
-
3. Análise sub-ppm de flúor em água pela técnica PIGE / SUB-PPM analysis of fluorine in water by the Pige technique
This work presents a new method for the analysis of fluorine in water, at the tenth of ppm concentration level, based on the PIGE (Particle-Induced Gamma-ray Emission) technique. It is shown that determination of concentrations of this order of magnitude by PIGE requires the use of a preconcentration method. Some attempts of preconcentration of fluorine by a
Publicado em: 2008
-
4. Caracterização fisico-química de adobe estabilizado com amido de mandioca
Due to the high habitational Brazilian shortage, traditional technologies of earth construction and constructive elements production have been rescue, having the soil as a principal raw material. Between these traditional technologies, there are the adobes, which consist of soil blocks with regional variable size. The soil material is removed, humidified, tr
Publicado em: 2008
-
5. AdiÃÃo seqÃencial aleatÃria de elementos escalantes em d dimensÃes
Um grande nÃmero de problemas desafiadores està associado ao estudo de interfaces, pois existem inÃmeros processos fÃsicos, quÃmicos e biolÃgicos complexos que ocorrem por inteiro na fronteira entre duas fases, ou sÃo apenas iniciados nessa interface. Como exemplos destes, podemos citar alguns processos que sÃo importantes na indÃstria e no mundo na
Publicado em: 2008
-
6. Análise teórica da superfície Si(111)-(7x7)
In this work, wecarry out theoretical study of the silicon surface reconstruction (7x7) grown in the [111] direction, denoted by Si(111)(7x7), using the Density Functional Theory formalism, within the Local Density Approximation (LDA) for the exchange correlation term. The interaction with the valence electrons and the core ion (nucleus more core electrons)
Publicado em: 2007
-
7. AnÃlise teÃrica da superfÃcie Si(111)-(7x7)
Neste trabalho, realizamos o estudo teÃrico da reconstruÃÃo (7x7) da superfÃcie de SilÃcio crescida na direÃÃo [111], denotada por Si(111)â(7x7), utilizando para isto o formalismo da Teoria do Funcional da Densidade, com a AproximaÃÃo da Densidade Local (LDA - LocalDensityApproximation) para o termo de trocaâcorrelaÃÃo. A interaÃÃo entre os el
Publicado em: 2007
-
8. Study of charge and mass transference on copper/liquid interface : an application of QCM / Estudo da transferencia de carga e massa na inteface cobre/liquido : uma aplicação da QCM
In this work we used the QCM (Quartz Crystal Microbalance) as an alternative technique for the studying of the corrosion/inhibition of cooper. We studied the protection of cooper surfaces due to the adsorption of a volatile corrosion inhibitor, (VCI-Cyclehexilamine-Benzoate). We used electrochemical techniques to characterize the corrosion in different envir
Publicado em: 2004