The taxonomic and functional structure of the subtidal nematode assemblages from a temperate estuary (Mondego estuary, Portugal) was studied, focussing on different taxonomic levels (genus, family and order), on single functional groups and on multiple biological traits. Based on taxonomic levels and on four biological traits (feeding type, life strategy, tail and body shape), the analysis of the nematode assem...
O prognóstico da doença oncológica tem vindo a melhorar significativamente nas últimas décadas. A quimioterapia intensiva actual, a evolução da radioterapia, das técnicas cirúrgicas, dos cuidados per-operatórios e dos cuidados gerais de saúde contribuiram enormemente para esta melhoria. No entanto, aumentou a toxicidade dos tratamentos, condicionando uma maior morbilidade e aumento da necessidade de recurso à h...
Os Síndromes de Falência Medular Hereditários são um grupo heterogéneo de doenças, que se caracterizam pela produção reduzida de uma ou mais linhagens hematopoiéticas pela medula óssea e consequentes citopenias no sangue periférico. Associam-se a um variado número de malformações congénitas e a maioria são entidades «pré-malignas».A propósito de seis casos, os autores tecem algumas considerações sobre as caract...
Estuarine meiofauna communities have been only recently considered to be good indicators of ecological quality, exhibiting several advantages over macrofauna, such as their small size, high abundance, rapid generation times and absence of a planktonic phase. In estuaries we must account not only for a great natural variability along the estuarine gradient (e.g. sediment type and dynamics, oxygen availability, t...
The aim of this study was to develop a structural equation model for underwater gliding distance based on its determinant variables, in order to confirm whether it is an informative test of young swimmers’ hydrodynamic profile. Methods: Twenty-three subjects (twelve boys and eleven girls with a mean age of 13.61 ± 0.83 years old) were evaluated. The following were determined: (i) the underwater gliding distance...
The aim of this study was to compare the speed fluctuation and the drag force in young swimmers between genders. Twenty-three young pubertal swimmers (12 boys and 11 girls) volunteered as subjects. Speed fluctuation was measured using a kinematical mechanical method (i.e., speedo-meter) during a maximal 25-m front crawl bout. Active drag, active drag coefficient and power needed to overcome drag were measured w...
Estuarine meiofauna communities have been only recently considered to be good indicators of ecological quality status, in contrast with macrofauna which is widely used in the assessment and monitoring of aquatic systems. Meiofauna features, such as their small size, high abundance, rapid generation times and absence of a planktonic phase, make these assemblages potential target indicators. In estuaries, we must...
Santo André 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 ...
Quer no contexto educativo quer no contexto competitivo, grande parte do tempo das sessões de natação é despendida no ensino e aperfeiçoamento do momento de nado. No entanto, o contributo da partida e das viragens para o rendimento final também é significativo. Adicionalmente, a aplicação constante das tarefas denominadas “clássicas” tendem a originar constrangimentos que poderão afetar um saudável processo de ...
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