Bilayer Adsorption
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. Influence of organobentonite structure on toluene adsorption from water solution
Due to increase water pollution by organic compound derived from hydrocarbons such as toluene, several alternative technologies for remediation of polluted water have been originated. In this work natural bentonites were modified with cetyltrimethylammonium (CTMA+) for obtaining organophilic bentonites. The obtained CTMA-bentonites would be suitable for use
Mat. Res.. Publicado em: 02/10/2012
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2. 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
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3. Development of membrane biosensors and characterization of the interactions between cytochrome c and hybrid bilayer membranes by Surface Plasmon Resonance / Desenvolvimento de biosensores de membranas e caracterização da interação entre citocromo c e bicamadas híbridas por ressonância plasmônica de superfície
The aim of this work was to develop membrane biosensors based on Surface Plasmon Resonance (SPR) and to apply them to study the interactions between cytochrome c (cyt c) and model membranes. SPR is an optical technique that provides high-sensitivity measurements of refractive index (n), allowing the characterization of the adsorption and desorption of molecu
Publicado em: 2008
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4. Filmes nanoestruturados contendo lipossomos para liberação controlada do Ibuprofeno / Nanostructured films containing liposomes for controlled release of ibuprofen
Controlled drug delivery is a key issue in a number of nanotechnology endeavors owing to the large impact on society that may achieved if improved systems are created which allows for delivery at a specific target and with a controlled rate. Among the various paradigms employed in drug delivery, the use of liposomes is prominent because a variety of drug mol
Publicado em: 2008
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5. Estudo de monocamadas fosfolipidicas nanoestruturadas obtidas por LB para aplicações em biossensores
There has been long-standing interest in the physical chemical properties of defined mixtures of cholesterol and phospholipids in monolayer and bilayer membranes. They also provide insight into certain properties of the membranes of animal cells. Even if phospholipids and sphingolipids build up the matrix of cellular membranes, sterols are essential componen
Publicado em: 2007
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6. Estratégias para prospecção e predição de peptídeos bioativos
Chapters one and two deal with the isolation and identification of bioactive peptides from the skin secretion of Phyllomedusa hypochondrialis. The first chapter demonstrates the use of protemic techniques, mainly mass spectrometry, for the study of bradykinin related peptides (BRPs) present in the amphibians secretion and freshly dissected skin fragments. Ei
Publicado em: 2007
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7. Optimum adsorption of phospholipid bilayer on silica and reconstitution of receptor function. / Adsorção ótima de bicamada fosfolipídica sobre sílica e reconstituição do reconhecimento receptor-ligante
The general objective of this project was to continue evaluating the suitability of amphiphiles that aggregate in aqueous solution forming bilayers, to cover surfaces of silica. A secondary objective pursued was to promote the reconstitution of the receptor-ligand function, having as a model the monosialoganglioside GM1 and the enterotoxin of the choleric vi
Publicado em: 2006
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8. Cationic bilayers over silica: adsorption and colloidal stability at low ionic strength / Bicamadas catiônicas em sílica: adsorção e estabilidade coloidal a baixa força iônica
The study of adsorption of model-membranes on the surface of solid partic1es is an important line of research in rapidly developing research areas such as biosensors design, building up of immunological kits or design ofbiocompatible materiais. In this work, interactions between hidrophilic silica particles and cationic liposomes made up of dioctadecyldimeth
Publicado em: 2003
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9. Interações entre bicamadas lipídicas e interfaces hidrofóbicas / Interactions between lipid bilayers and hydrophobic interfaces
Determinations of surface tension (γ) at the air--water interface, contact angles (Θ), and in and ex-situ ellipsometric mean thickness (d) were used to study the interaction between dioctadecyldimethylammonium bromide (DODAB) small vesicles and spin-coated polystyrene sulfate (PSS) films on silicon wafers. Upon the adition of NaCl (50 mM final conc
Publicado em: 2003
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10. Sorção, imobilização e extração de polissiloxanos em silicas porosas para uso em cromatografia liquida de alta eficiencia
This work investigated the phenomena responsible for the adsorption and immobilization that occurs between the silica pores and poly(metiloctilsiloxano) (PMOS), used as stationary phase in High Performance Liquid Chromatography (HPLC) in the reversed phase. Through kinetic, spectroscopic and chromatographic studies, was verified that, after preparation of th
Publicado em: 2002
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11. Preparação e caracterização de magnetolipossomas para aplicações em processos de absorção por afinidade
Magnetoliposomes are vesicles which are made by adsorption of phospholipids in the surface of particles of the colIoidal magnetic fluid, like magnetite. These particles have structures formed by phospholipids in bilayer which encapsule magnetite inside of them. These liposomes preserve almost alI properties of lipidic bilayer, besides to be captured from sol
Publicado em: 1998
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12. Use of an oriented transmembrane protein to probe the assembly of a supported phospholipid bilayer.
Planar-supported phospholipid bilayers formed by the adsorption of vesicles are increasingly used in the investigation of lipid-dependent reactions. We have studied the way in which these bilayers are formed with phospholipid vesicles containing the transmembrane protein Tissue Factor (TF). TF complexed with the serine protease, factor VIIa, is the primary i