ABSTRACT: Temporal variations of rare earth elements (REE) and their fractionation patterns, major elements, Pb and Hg were determined in two multicores collected at 445 and 2100 m water depth (mwd) in the Cascais submarine canyon (CSC). The PAAS-normalized REE patterns suggest mixing of Tagus estuarine and marine sediments, marked by MREE (Nd‐Dy series) enrichment and by positive Eu-anomaly, with marine sedime...
Barriers are usually considered to be negative as they prevent or strongly reduce fish migrations and movements in general, fragmenting populations and decreasing their viability. But desperate situations call for desperate measures and in the context of LIFE Saramugo Project all possible actions with positive effects were taken.
Invasive species have the potential to impact native fish through interference competition, which is especially concerning for the conservation of the valuable endemic ichtyofauna of the Iberian Peninsula. This study investigated the potential negative effect of the invasive bleak Alburnus alburnus on the behaviour of the critically endangered native Iberian saramugo Anaecypris hispanica.
The aim of the study was to examine the effect of the sequence order of concurrent training on physical performance in students. 31 subjects were recruited from a Portuguese public high school and were randomly divided in strength training followed by endurance exercise group (GSE, n=12) and endurance followed by strength training group (GAS, n=11). The training program was performed during physical education c...
The aim of this study was to examine the influence of mixing and separating students by sex in the game performance, as heart rate (HR) demands and rate of perceived exertion (RPE) during 3-a-side small-sided soccer games (SSGs) performed in the context of Physical Education (PE) classes. Twelve students (6 male of 15.33±0.8 years; 1.77±0.10 m; 67.0±4.2 Kg; 21.50±2.5 Kg.m², and; 6 female of 15.00±0.0 years; 1.6...
APS, Journals Phys. Rev. Lett., Volume 111, Issue 24
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In this paper some results on the application of four N,N’-tetrasubstituted malonamide derivatives for the extraction and separation of platinum-group metals (PGMs) are presented. The above mentioned extractants were specifically synthesized in order to evaluate their efficiency for the extraction of a specific metal, or group of metals, from aqueous chloride matrices. Different behaviours were obtained towards...
Santo Andre is an enclosed brackish water coastal lagoon with temporary connections to the sea by a man-made channel. The exchange and mixture of saltwater and freshwater is irregular and the lagoon may show daily and seasonal fluctuations, but also long-term variation. Different benthic communities may be present along the annual cycle according to the magnitude of episodic freshwater and sea water inputs. In ...
Existiam lacunas de informação sobre o presumível desaparecimento de 11 quadros “animalistas” de Bernardino da Costa Lemos no trágico incêndio ocorrido em 1978 na Faculdade de Ciências da Universidade de Lisboa. Excluindo o artigo de Júlio Jesus (1928) com descrições écfrasicas-histórico-artísticas de cada uma das telas, cinquenta anos antes delas desaparecerem, Lemos subsiste na generalidade da historiografia ...