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Impedance e-tongue instrument for rapid liquid assessment
(Review of Scientific Instruments, 2009-02-01) [Artigo]
We present a compact and easy to handle instrument developed to perform rapid analysis of liquids utilizing an electronic tongue system. Briefly, the e-tongue used here is based on impedance measurements of an array of ...
Efeito da adição de lodo de estação de tratamento de água (ETA) nas propriedades de material cerâmico estrutural
(Cerâmica, 2006-09-01) [Artigo]
O resíduo (lodo) gerado nos decantadores das Estações de Tratamento de Água (ETA) possui composição variada, de acordo com a região onde ela está localizada, com o mês de coleta e com o coagulante usado. Neste trabalho ...
Nanocompósitos eletroativos de poli-o-metoxianilina e polissacarídeos naturais
(Química Nova, 2007-10-01) [Artigo]
In this work we take advantage of the polyelectrolyte character of some Brazilian native gums to fabricate electrically conductive, nanostructured films. The gums Sterculia urens, (caraia), Sterculia striata (chicha) or ...
Influence of canine brain decomposition on laboratory diagnosis of rabies.
(Revista da Sociedade Brasileira de Medicina Tropical, 1999-01-01) [Artigo]
Canine brains infected with rabies virus were submitted to decomposition by being left at room temperature of 25 to 29 degrees C for up to 168 h. At 24 h intervals, brain fragments were analyzed by immunofluorescence (IF) ...
Nanoscale processing of polyaniline and phthalocyanines for sensing applications
(Sensors and Actuators B: Chemical, 2006-02-27) [Artigo]
Nanostructured polyaniline-modified electrodes were fabricated via the electrostatic layer-by-layer (LbL) technique where polyaniline (PANI) was assembled with one of three tetrasulfonated metallic phthalocyanines, viz. ...
Surface morphology and optical characterization of OC1 OC6-PPV films
(Brazilian Journal of Physics, 2006-06-01) [Artigo]
We report optical and morphological properties of poly(2-methoxy-5-hexyloxy-p-phenylenevinylene) (OC1OC6-PPV) films processed by casting, spin-coating (SC) and Langmuir-Blodgett (LB) techniques. The absorption spectra are ...
Structure control of poly(p-phenylene vinylene) in layer-by-layer films by deposition on a charged poly(o-methoxyaniline) cushion
(Journal of Applied Physics, 2013-04-14) [Artigo]
In this paper, we demonstrate that the intrinsic electric field created by a poly(o-methoxyaniline) (POMA) cushion layer hinders the changes in molecular conformation of poly(p-phenylenevinylene) (PPV) in layer-by-layer ...
Diagnostic accuracy of the EMG parameters associated with anterior knee pain in the diagnosis of patellofemoral pain syndrome
(Archives of Physical Medicine and Rehabilitation, 2014) [Artigo]
Objective To assess the diagnostic accuracy of the surface electromyography (sEMG) parameters associated with referred anterior knee pain in diagnosing patellofemoral pain syndrome (PFPS). Design Sensitivity and specificity ...
Black Holes and Exotic Spinors
(Universe, 2016-06-01) [Artigo]
Exotic spin structures are non-trivial liftings, of the orthogonal bundle to the spin bundle, on orientable manifolds that admit spin structures according to the celebrated Geroch theorem. Exotic spin structures play a ...
Characterization and optimization of levan production by Bacillus subtilis NATTO
(Romanian Biotechnological Letters, 2013-07-01) [Artigo]
Exopolysaccharides are in evidence due to their applications, especially in the food industry. The levan is an exopolysaccharide composed by fructose residues, which has been used as stabilizer, carrier of flavours and ...