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Remote Optical Monitor of Blood Oxygenation
D. R. Santos; R. J. O. Andrade; A L. J. Teixeira; C. A. C. Bastos; P. S. AndréPulse oximetry is a widely used technique in biomedical analyses. It enables monitoring the percentage of saturated hemoglobin and heart pulse in a noninvasive way.The mandatory permanence of patients in medical facilitiesdue to continuous measurements of blood oxygen saturationand cardiac pulse can be avoided by taking advantage of nowadays telecommunications technologies. This paperdescribes a pulse oximeter ...
Estudo da fonte do sismo do Haiti de 12 de janeiro de 2010 a partir de combinaç...
Santos, R.J.G.; Borges, J. F.; Caldeira, Bento; Bezzeghoud, MouradNeste trabalho é apresentada uma metodologia baseada no cruzamento de técnicas e dados sísmicos (ondas de volume com registo telessísmico por estações de banda larga) e geodésicos (SAR - Radar de Abertura Sintética) com o intuito de estudar o complexo processo de ruptura do sismo do Haiti de 12 de Janeiro de 2010. Esta metodologia baseia-se: 1) na análise da diretividade para estimar a direção e a velocidade mé...
Anaerobic biodegradability of category 2 animal by-products : methane potential...
Pozdniakova, T. A.; Costa, J. C.; Santos, R. J.; Alves, M. M.; Boaventura, Rui A. RochaCategory 2 animal by-products that need to be sterilized with steam pressure according Regulation (EC) 1774/2002 are studied. In this work, 2 sets of experiments were performed in mesophilic conditions: (i) biomethane potential determination testing 0.5%, 2.0% and 5.0% total solids (TS), using sludge from the anaerobic digester of a wastewater treatment plant as inoculum; (ii) biodegradability tests at a consta...
Angiotensin-(1-7) potentiates the coronary vasodilatatory effect of bradykinin ...
Almeida,A.P.; Frábregas,B.C.; Madureira,M.M.; Santos,R.J.S.; Campagnole-Santos,M.J.; Santos,R.A.S.It has been shown that angiotensin-(1-7) (Ang-(1-7)) infusion potentiates the bradykinin (BK)-induced hypotensive response in conscious rats. The present study was conducted to identify Ang-(1-7)-BK interactions in the isolated rat heart perfused according to the Langendorff technique. Hearts were excised and perfused through the aortic stump under a constant flow with Krebs-Ringer solution and the changes in p...
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