Teste Repositóri
2014-01-01
Resultados de pesquisa
Foram encontrados 6 registos.
Os autores apresentam dois casos de febre prolongada em doente com infecção VIH. O seu estudo conduziu ao diagnóstico de Doença de Hodgkin.
O défice de Glucose-6-fosfato Desidrogenase (G6PD) é, provavelmente, a mutação clinicamente significativa mais frequente
a nível mundial, sendo Portugal um país de baixa prevalência (cerca de 0,51%).
A G6PD é o enzima que catalisa o primeiro passo na via das pentoses fosfato transformando a glicose- 6- fosfato em
6- fosfogluconato com redução do NADP a NADPH. Apesar de ser expressa em todos os tecidos, a sua deficiência apenas se
faz sentir nos eritrocitos, levando a hemólise dos mesmos em situações de stress oxidativo. Já foram descritas mais de 400
variantes da G6PD.
Os autores apresentam um caso de uma mulher portadora da variante Bética da G6PD, sendo a doença manifestada por favismo.
The induction of non-photochemical quenching of chlorophyll fluorescence (NPQ) and its relationship with the operation of the xanthophyll cycle were studied in estuarine microphytobenthos assemblages. NPQ and xanthophyll cycle operation were characterised by quantifying the induction kinetics and light-response curves of NPQ formation and of the production of xanthophyll cyle pigments diadinoxanthin (DD) and diatoxanthin (DT), on suspensions of benthic microalgae collected during two spring-neap tidal cycles, in summer (July) and in winter (November). The NPQ light response was characterised by a large intraday variability and by the high NPQ values attained under high irradiances. Maximum daily NPQ often reached values above 4.0, and values above 5.0 were observed on 2 days during the November sampling period. Changes in NPQ were gene...
Increases in ultraviolet radiation (UVR) and CO2 affect phytoplankton growth and
mortality in a variety of different ways. However, in situ responses of natural phytoplankton communities to climate change, as well as its effects on phytoplankton
annual cycles, are still largely unknown. Although temperature and UVR have been
increasing in temperate latitudes during winter, this season is still particularly
neglected in climate change studies, being considered a non-active season regarding
phytoplankton growth and production. Additionally, coastal lagoons are highly
productive ecosystems and very vulnerable to climate change. This study aims, therefore, to evaluate the short-term effects of increased UVR and CO2 on the composition
and growth of winter phytoplankton assemblages in a temperate coastal lagoon. During winter 2012, mi...
The newly-constituted Ocean Colour Portugal consortium (OCPortugal) aims at promoting the use of remote sensing (RS) products in the Atlantic off Portugal. In close collaboration with the European Space Agency (ESA), OCPortugal currently links the following institutions: Centre of Oceanography (IO), Faculty of Sciences of the University of Lisbon; CENTRIA and CITI from Faculty of Science and Technology , New University of Lisbon (FCTUNL); and Sagremarisco-Viveiros de Marisco Lda. Through a coordinated set of actions undertaken by these research groups, OCPortugal brings together expertise in different research areas such as marine biology, applied optics, satellite imagery, and parallel computing.
Este registo pertence ao Repositório Científico do LNEC
