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Electrical, structural and thermal properties of new conductive blends (PANICG) based on polyaniline and cashew gum for organic electronic
(Journal of Thermal Analysis and Calorimetry, 2019-05-30) [Artigo]
The application of cashew gum, in particular the one which is abundant in northeastern Brazil, remains limited to the foods and pharmaceutics industry. In attempting to obtain further potentialities of the cashew gum (CG), ...
Evaluation of cryo-treatment in the luminescent properties of PVDF/Eu2O3 composite obtained by using buriti oil as additive
(Solid State Sciences, 2019-06-01) [Artigo]
Polymeric matrices containing luminescent particles find many applications like temperature sensor platforms. However, it is important to understand the impact of the particle immobilization on the polymer structural and ...
USE OF TECHNOLOGICAL RESOURCES IN SCIENCE EDUCATION: PRODUCTION OF VIDEO EXPERIMENTAL LESSONS BY FUTURE TEACHERS
(Nuances-estudos Sobre Educacao, 2017-09-01) [Artigo]
This article presents a survey conducted in an extension course that integrates science education (experimental activities) and media (production video lessons). The methodology used was the Textual Analysis Discourse that ...
Motor adjustments during time-constrained sit-to-walk in people with Parkinson's disease
(Experimental Gerontology, 2019-09-01) [Artigo]
Introduction: Sit-to-walk (STW) is a sequential task and a merge of sit-to-stand (STS) and gait initiation that are impaired in people with Parkinson's disease (PD). Performing sequential task under time constraint (e.g., ...
Light emitting diodes containing Langmuir-Blodgett films of copolymer of a poly(p-phenylene-vinylene) derivative and poly(octaneoxide)
(Journal of Nanoscience and Nanotechnology, 2008-05-01) [Artigo]
The properties of Langmuir and Langmuir-Blodgett (LB) films from a block copolymer with polyethylene oxide and phenylene-vinylene moieties are reported. The LB films were successfully transferred onto several types of ...
Photodegradation of phenol red on a Ni-doped niobate/carbon composite
(Ceramics International, 2014-08-01) [Artigo]
The photocatalytic activity of a new nanostructured Ni-doped niobate KSr2(Ni0.75Nb4.25)O15-delta was studied using the phenol red dye as a test molecule and the influence of amorphous carbon deposits upon the photoactivity ...
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. ...
The relation between structural features and electrochemical activity of MnO2 nanoparticles synthesized from a polyol-made Mn 3O4 precursor
(Journal of Solid State Electrochemistry, 2013-07-01) [Artigo]
A simple hybrid synthesis processing method was developed to synthesize γ-MnO2 nanocrystalline particles. The polyol method was modified by the addition of nitric acid in order to allow the synthesizing of single-phase ...
Synthesis and structural characterization of Eu(III)-doped Zn7Sb2O12
(Journal of Materials Science, 2010-08-01) [Artigo]
In addition to the lanthanide series elements, Europium is one of the chemical elements of greatest interest for the development of species with oxidation state +3 (III), which leads to interesting electronic transitions. ...
Deriving the magnitude of niobium off-center displacement in ferroelectric niobates from infrared spectroscopy
(Journal of Applied Spectroscopy, 2012-05-01) [Artigo]
A KSr2Nb5O15 nanopowder was synthesized by a chemical route based on a modified polyol method. The nanopowder exhibits the space group P4bm (ferroelectric) ascribed to the displacement of Nb from the central position of ...