Polyester (PES) has been coated with polypyrrole (PPy) to produce conducting fabrics. Graphene oxide (GO) has been used in different concentrations (10, 20 and 30% weight) as counter ion to neutralize the positive charges of the PPy structure. Fourier transform infrared spectroscopy with attenuated total reflection (FTIR-ATR), energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) of th...
A abordagem para o desenvolvimento de software tem despertado grande interesse entre as organizações de todo o mundo, uma vez que apresentam características de uma abordagem simples e flexível num ambiente em constante mudança. Quando o assunto é o desenvolvimento de software, pensamos logo nos modelos que podem ser utilizados, a fim de que o processo de construção seja o mais eficiente possível. Di...
Our proposal is to make a graphic representation of the sound syntax and the syllabic structure enclosed in The Raven, published in 1845 by Edgar Allan Poe, using a script that works simultaneously as reading-text-machine, a drawing-machine and a synthesis-text-machine. The script translates the poem structure into an abstract grid, generating a drawing. The geometric definition of the poem is then cons...
Education is being revolutionized by the introduction, of mobile technologies in the teaching and learning process. However, studies that focus in the application of mobile technologies to informal learning environments is scarce and not systematized . This is the reason for conducting a research project that involved a urban game MobiGeo, designed in to take better advantage of the flexibility and...
This paper investigates the performance, investment styles and managerial abilities of French socially responsible investment (SRI) funds investing in Europe during crisis and non-crisis periods. Our results show that SRI funds significantly underperform characteristics matched conventional funds during non-crisis periods, but match the performance of their peers during market downturns. The underperform...
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