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Grupo de Estudos em Evolução Humana
Add a tag. Public Private login e. As SLR pushes the estuary towards flood dominance, sedimentation increases and promotes ebb dominance.
The approach followed herein to assess the interplay between SLR, sedimentation and hydrodynamics is simplified. First, the future bathymetries are based on simple extrapolation of estimated trends. Ideally, a full morphodynamic model, calibrated and validated with field data, should be applied to better quantify these interactions.
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Secondly, the evolution of the temperature and precipitation associated with climate change is also likely to affect the sediment input into the estuary, thus changing the sedimentation rates. Thirdly, tidal asymmetry was characterized based on tidal elevations alone. While this approach is common, a more detailed analysis should focus on velocities or even sediment fluxes.
Indeed, in very shallow areas, the asymmetry in sediment transport can be the opposite as the one indicated by the asymmetry in tidal elevations e. Using more sophisticated and accurate approaches is desirable, but entails significant difficulties. First, the predictability of century-scale estuarine evolutions by process-based morphodynamic models remains sketchy, in particular when mixed sediments are involved e.
In the case of the Tagus estuary, the lack of extensive bathymetric data also prevents a detailed calibration and validation of such a model, just as it provided only coarse estimates of sedimentation rates. Also, existing estimates of sediment input into the estuary are coarse Vale and Sundby, , and there seems to be a long way before the effect of climate change on those inputs can be determined. While the approach followed herein is a compromise between the need to assess different processes and the limited accuracy of the most sophisticated existing methods, it highlights the complex interactions between processes and their contrasting effects.
However, further studies using more sophisticated models, supported by more data, are required to verify the conclusions and quantify how the estuary will evolve under a changing climate. Further consequences of SLR, both positive and negative, are yet to be investigated in detail. The increase in tidal amplitude will result in larger tidal prisms. This consequence will reduce the saline stratification observed in high flow conditions , and decrease the residence times, thereby improving the overall water quality. Salt-wedge intrusion will increase with potentially negative consequences on water used for irrigation and industrial purposes e.
Higher tidal prisms can also reduce the dredging efforts at the inlet channel. We thank the three anonymous reviewers for their constructive comments. A preliminary version of this paper was published as Guerreiro et al. Aldridge, J.
Evolução (Portuguese Edition)
Lipoid pneumonia due to Mexican folk remedies: cultural barriers to diagnosis. Arch Pediatr Adolesc Med. Radiographic plain film and CT findings in lipoid pneumonia in infants following aspiration of mineral oil used in the treatment of partial small bowel obstruction by Ascaris lumbricoides. Pediatr Radiol. BAL in children: a controlled study of differential cytology and cytokine expression profiles by alveolar cells in pediatric sarcoidosis. Spickard A 3rd, Hirschmann JV. Exogenous lipoid pneumonia. Arch Intern Med. Interstitial pulmonary disease induced by occupational exposure to paraffin.
Aboudara M, Yun J. A case of fire-eater's pneumonia in an active-duty soldier. Idiopathic endogenous lipoid pneumonia. Balakrishnan S. Lipoid pneumonia in infants and children in South India. Br Med J. Hydrocarbon pneumonitis following liquid paraffin aspiration during a fire-eating performance: a case report.
J Med Case Reports. Exogenous lipoid pneumonitis: pulmonary patterns. Lipoid pneumonia secondary to baby oil aspiration: a case report and review of the literature.
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Case 3. Lipoid pneumonia. Pediatr Rev. Not your typical pneumonia: a case of exogenous lipoid pneumonia. J Gen Intern Med. Lipoid pneumonia in infants: a radiological-pathological study. Squalene aspiration pneumonia in children: radiographic and CT findings as the first clue to diagnosis.
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Related articles. Found at these bookshops The set of all maxima in all series makes it possible to determine the probability of occurrence P of a certain extreme level z.
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He tore apart the willful ignorance and Koch-funded denial of the Republican Party when it comes to the issue of climate change. The fact is, Republicans are placing us in great harm by refusing to act at all when it comes to global warming and the devastating effects it is having on our country and planet. A few of the leaders, writers and scientists who offered their thoughts on climate change. Two dozen scientists, authors, and world and national figures answered two questions: What is your greatest worry about climate change? What gives you hope? Here are some of their answers, condensed for space.
I worry about oceans becoming more corrosive, decimating both fisheries and coral reefs. Oceans have already become 30 percent more acidic since the beginning of the Industrial Revolution; if business-as-usual carbon emissions continue, oceans are likely to be percent more acidic by the end of this century. I take heart in knowing that social change can happen very rapidly once a tipping point is reached, that young people are bringing new passion and creativity to the issue, and that climate change is being seen increasingly as the moral issue it is.
The worst possible aspect of climate change is that it will be irreversible and irrevocable.