This work provides a convenient low‐cost strategy for fast fabrication of dansyl‐based fluorescent nanofibers for development of latent fingerprints aiming forensic applications. Polycaprolactone (PCL) and dansyl cadaverine (DnsCad) or dansylglycine (DnsGly) nanofibers are prepared by electrospinning technique and characterized by SEM, FTIR, thermal analysis, and fluorescence spectroscopy. The electrospun PCL/DnsCad and PCL/DnsGly nanofibers are fluorescent with greenish blue and yellowish green emission, respectively. Such nanofibers are useful for enhancement of the visual contrast of latent fingerprints on metallic surfaces when exposed to UV light. These findings are particularly important for development of latent fingerprints on cartridge cases.

This work provides a convenient strategy for preparation of conducting polycaprolactone (PCL)/polyaniline (PAni) nanofibers, useful for development of optoelectronic sensors and devices. PCL/PAni nanofibers were obtained by electrospinning technique and characterized by SEM, FTIR, thermal analysis, and DC electrical conductivity. The influence of the experimental conditions in the electrospinning process, such as the applied voltage, on the nanofiber morphology was discussed in detail. Incorporation of PAni into PCL nanofibers significantly increased the electrical conductivity from a non-detectable level for the neat PCL to 0.032 ± 0.022 S/cm for the nanofibers containing 7.5 wt.% PAni. Therefore, electrospun PCL/PAni nanofiber mats presented optical and electrical properties, that awaken the possibility of applications for these materials as acid-base sensors and electrochromic devices.

O presente estudo destaca-se pela análise e desenvolvimento de um produto de design, cuja função é coletar e transportar água, no objetivo de auxiliar populações desassistidas que realizam essa atividade para sua subsistência. A pesquisa possuiu como estudo de caso a cidade de Viçosa (AL), foi baseada numa metodologia modelada, subsidiada por uma revisão de literatura, e por métodos observacionais e interacionais, que favoreceram a elaboração do produto final do estudo. Para tanto, tais soluções foram apoiadas pelos princípios da ergonomia e do design. Em suma, a proposta procurou atender problemáticas ergonômicas em vista da melhoria da qualidade do desempenho da atividade de coleta e transporte de água e de vida da população.

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