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Characterization of speed fluctuation and drag force in young swimmers: a gende...

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...

Bioactivity and Applications of Sulphated Polysaccharides from Marine Microalgae

Review Paper ; Marine microalgae have been used for a long time as food for humans, such as Arthrospira (formerly, Spirulina), and for animals in aquaculture. The biomass of these microalgae and the compounds they produce have been shown to possess several biological applications with numerous health benefits. The present review puts up-to-date the research on the biological activities and applications of poly...

Bioactive compounds from marine microalgae — health applications

Caso radiológico: hemossiderose pulmonar ideopática

ABSTRACT We present a case of a four year-old child with a second episode of iron deficiency anaemia. Following fever, cough and hemoptysis a chest X-ray and chest CT were performed. Bilateral and patchy areas of ground glass and consolidation were noted in the setting of intrapulmonary hemorrhage. The final diagnosis was idiopathic pulmonary hemosiderosis.

Anafilaxia induzida por fármacos: Registo Nacional 2007-2010

Introdução: A anafilaxia a fármacos constitui uma situação potencialmente fatal e imprevisível, desconhecendo-se a real prevalência em diferentes grupos populacionais e os factores de risco relacionados.Objectivo: Contribuir para o melhor conhecimento epidemiológico da anafilaxia induzida por fármacos no nosso país. Métodos: Durante um período de 4 anos (Janeiro de 2007 a Dezembro de 2010) foi implementado um s...

How informative are the vertical buoyancy and the prone gliding tests to assess...

The aim of this research was to develop a path-flow analysis model to highlight the relationships between buoyancy and prone gliding tests and some selected anthropometrical and biomechanical variables. Thirty-eight young male swimmers (12.97 ± 1.05 years old) with several competitive levels were evaluated. It were assessed the body mass, height, fat mass, body surface area, vertical buoyancy, prone gliding aft...

Effects of spray-drying and storage on astaxanthin content of Haematococcus plu...

The main objective of this study was to evaluate the stability of astaxanthin after drying and storage at different conditions during a 9-week period. Recovery of astaxanthin was evaluated by extracting pigments from the dried powders and analysing extracts by HPLC. The powders obtained were stored under different conditions of temperature and oxygen level and the effects on the degradation of astaxanthin were ...

Clinical manifestations of pandemic (H1N1) 2009 in the ambulatory setting

INTRODUCTION: In June 2009, the World Health Organization declared an influenza pandemic associated with the pandemic (H1N1) 2009 strain. It was summer in the northern hemisphere, and therefore travelling and vacation time, which also provided an increased opportunity for the dissemination of respiratory diseases. METHODOLOGY: We reviewed the paper case report forms from all the patients with influenza-like il...

Avaliação do Estado dos rios no Sul de Portugal: dos conceitos à prática

O aumento da população humana e o crescente desenvolvimento tecnológico tem conduzido a um excessivo consumo de água consequentemente associado à degradação dos ecossistemas aquáticos. Surge assim a necessidade de avaliar o estado dos ecossistemas aquáticos, através de programas de monitorização adaptados às diferentes realidades. Inicialmente, estes programas foram desenvolvidos tendo em consideração os difere...

Uso de técnicas de captação e armazenamento de água na região semiárida Brasile...

As regiões semiáridas são caracterizadas pela escassez hídrica decorrente da incidência de chuvas irregulares e má distribuídas no tempo e no espaço. Estas características causam uma forte dependência da intervenção do homem sobre a natureza, no sentido de garantir a captação e armazenamento de água para abastecimento humano. Várias técnicas de captação e armazenamento de água têm sido foco de ação de órgãos go...