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Evapotranspiration from a Mediterranean evergreen oak savannah: The role of tre...
Paço, Teresa A.; David, Teresa S.; Henriques, Manuel O.; Pereira, João S.; Valente, Fernanda; Banza, João; Pereira, Fernando L.; Pinto, ClaraMediterranean evergreen oak woodlands of southern Portugal (montados) are savannah-type ecosystems with a widely sparse tree cover, over extensive grassland. Therefore, ecosystem water fluxes derive from two quite differentiated sources: the trees and the pasture. Partitioning of fluxes according to these different sources is necessary to quantify overall ecosystem water losses as well as to improve knowledge o...
Extracção Percutânea de Corpos estranhos do Sistema Cardiovascular
Rodrigues, D; Sá e Melo, A; Marinho da Silva, A; Carvalheiro, VM; Manuel, OWe report our experience of seven patients referred to our hospital with foreign bodies embolized in the cardiovascular system, namely fragmented catheters and devices used in interventional techniques, which were retrieved by a percutaneous approach. The patients' ages ranged from 2 to 29 years, with a mean age of 17. The majority (57%) were male. The retrieval equipment used included a pigtail catheter, multi...
Non-Markovian processes with long-range correlations: fractal dimension analysis
Cáceres,Manuel O.A particular class of strong non-Markovian stochastic processes have been studied by using a characteristic functional technique previously reported. Exact results for all moments and the whole Kolmogorov hierarchy are presented. The asymptotic scaling of the non-Markovian stochastic process has been characterized in terms of the long-range correlated noise appearing in the correponding stochastic differential ...
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