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Data Communication in Home Systems,using Networks Power (Power Line) and Collec...
Pedro M. M. Mostardinha; Sidónio M. Brazete; A. Manuel de Oliveira DuarteThis paper presents an overview of the most common networks used in Home Systems, Power Line and CATV (Collective Antenna Television). The main characteristics and rules for communicating in these networks are shown here.The development of a CATV modem is described. This modem will be used to perform the link between the flatsand the manager of information of the building. ; Neste artigo chama-se a atenç...
Structural effects on sigmatropic shifts in heteroaromatic allyl ethersElectron...
Araújo, Nuna C.; Barroca, Pedro M. M.; Bickley, Jamie F.; Brigas, Amadeu F.; Cristiano, Maria Lurdes Santos; Johnstone, Robert A. W.In contrast to the known thermal, exclusively [3,3], O- to N- rearrangement of allyl groups in phenyltetrazoles (1, Scheme 1), the comparable migration of the allyl group in pseudosaccharyl ethers (3; Scheme 2) has been shown to proceed through both [1,3]- and [3,3]-mechanisms, 4, 5; for the pseudosaccharyl derivative of the natural product myrtenol (6; Scheme 3) only the product 7 of a [1,3]-shift has been obs...
Reduction of AOX in the Bleach Plant of a Pulp Mill
Barroca, Maria João M. C.; Seco, Isabel M.; Fernandes, Pedro M. M.; Ferreira, Licínio M. G. A.; Castro, José Almiro A. M.The reconfiguration of an existing five-stage bleaching D0E1D1E2D2 sequence is proposed to ensure the minimal formation of organochlorine compounds, expressed as AOX, in the bleach plant of a kraft pulp mill processing Eucalyptus globulus wood. This reduction of the load of AOX in the effluents can be achieved without introducing new and expensive technologies in the bleaching process. In practice, this goal ca...
Prevalence of extracranial carotid occlusive disease. Non-invasive study.
Fernandes, J F; Instituto Vascular de Lisboa.; Pedro, L M; Freire, J P; Correia, A; Pedro, M M; Damião, A; Pereira, R; Alves, J P; Martins, CCerebrovascular disease is the most important cause of mortality and morbility in some European Countries, but the prevalence of carotid occlusive disease has not been adequately assessed. From 1985 to 1987, 1,143 patients were consecutively evaluated in the Vascular Laboratory in order to determine the presence of extracranial carotid occlusive disease. 638 (55.8%) were males and 505 (44.2%) females and mean a...
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