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Changes in paleotemperature and paleoproductivity over the last 40,000 years: N...
Martins, V.; Dias, J. M. A.; Moreno, J.; Salgueiro, E.; Mackensen, A.; Rubio, B.; Rey, D.; Magalhães, V.; Santos, J. F.; Rocha, F.; Laut, L.This work aims to identify changes in paleoceanographic conditions on the NW Iberian Continental Margin during the last ~40 ka BP. Paleotemperatures expressed as mean annual Sea Surface Temperature (SSTma) and paleoproductivities expressed as Export Productivity (Pexpma) were evaluated using the modern analog technique SIMMAX 28, based on planktonic foraminifera census counts. The study took into account the re...
Mercury and methylmercury in sediment cores from the Tagus estuary
Monteiro, Carlos Eduardo Salgueiro e SilvaO mercúrio é actualmente considerado um dos metais mais nocivos para o ambiente. O presente trabalho incide sobre os factores que actuam sobre o mercúrio, influenciando a sua distribuição em ambientes estuarinos. Dado o histórico de contaminação no Estuário do Tejo, foram recolhidos cores de sedimentos e separadas as águas intersticiais em dois locais distintos: um fortemente contaminado, Cala do Norte, e outro...
Allergic contact dermatitis in children. A multicenter study of the Portuguese ...
Gonçalo, S; Gonçalo, Margarida; Azenha, A; Barros, MA; Sousa-Bastos, A; Brandão, FM; Faria, A; Marques, MS; Pecegueiro, M; Rodrigues, JB; Salgueiro, EThe authors report a study of allergic contact dermatitis in 329 Portuguese children of 14 years or younger. 170 children (64 male and 106 female) reacted to 1 or more allergens. Most of these were in the 11-14 years group. The main allergens were nickel, thimerosal, cobalt, mercury, fragrance-mix and potassium dichromate. Nickel reactivity predominated in females over the whole group, but a greater number of m...
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