Browsing by Issue Date, starting with "2013-05-23"
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- Agenda mediática e as Capitais Europeias da Cultura: Porto 2001 e Guimarães 2012Publication . Centeno, Maria JoãoAtravés da análise de imprensa é possível verificar o papel que este meio de comunicação tradicional desempenha na construção da perceção dos eventos e na existência simbólica e material das cidades do Porto e Guimarães que acolheram em 2001 e 2012, respetivamente, o evento Capital Europeia da Cultura. A cobertura jornalística desviou-se da divulgação da programação dos eventos para a sugestão de roteiros de visita e pouco ou nada questiona o papel que as cidades, ao promover iniciativas deste tipo, têm enquanto lugares de inovação em termos de políticas culturais, de produção e inovação artística, na requalificação urbana e ambiental, na revitalização económica, na formação e criação de novos artistas e novos públicos.
- Real-time plasmid monitoring of batch and fed-batch Escherichia coli cultures by NIR spectroscopyPublication . Lopes, Marta B.; Sales, Kevin C.; Lopes, Vítor V.; Calado, CecíliaThe development of in-situ monitoring techniques enabling the real-time acquisition of information concerning the key variables over different Escherichia coli cultivation conditions and strategies is a crucial step towards the optimization of a plasmid bioproduction process. This work shows the use of a Near-InfraRed (NIR) fiber optic probe immersed in the culture broth for the real-time acquisition of NIR spectra along different E. coli cultures conducted with mixtures of the carbon sources glucose and glycerol, and performed in both batch and fed-batch modes. Accurate partial least squares models based on the acquired spectral data over such different cultivation conditions were built, yielding a R 2 = 0.97 for biomass and plasmid productions and a RMSEP of 0.34 and 7.52, respectively; a R 2 of 0.93 and a RMSEP of 0.46 and 0.33 was obtained for glucose and glycerol, respectively; the acetate model produced a R 2 of 0.96 and a RMSEP of 0.32.
- Design of a Multiband Full-Rate Ultra-Wideband Receiver in FPGAPublication . Véstias, Mário; Cláudio de Campos Neto, Horácio; Sarmento, HelenaMultiBand OFDM (MB-OFDM) UWB [1] is a short-range promising wireless technology for high data rate communications up to 480 Mbps. In this paper, we have designed and implemented in an Virtex-6 FPGA an MB-OFDM UWB receiver for the highest data rate of 480 Mbps. To test the system, we have also implemented an MB-OFDM transmitter and an AWGN generator in VHDL and determined the bit error rates at the receiver running in an FPGA.