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Interactions between K-carrageenan and chitosan in nanolayered coatings - Struc...

The interactions between -carrageenan and chitosan, two oppositely charged polysaccharides, have been investigated through microcalorimetric and quartz crystal microbalance measurements. Microcalorimetric measurements show that -carrageenan/chitosan interaction is an exothermic process and that the alternate deposition of -carrageenan and chitosan results in the formation of a nanolayered coating mainly due ...

Impacto da salinidade no desenvolvimento e crescimento de mudas de carnaúba (Co...

Identificar o impacto da salinidade no desenvolvimento e crescimento de espécies resistentes a altas concentrações salinas é de fundamental importância para a recuperação de áreas salinizadas do semiárido nordestino brasileiro. Visando contribuir para a resolução desta problemática, o presente trabalho avaliou o efeito de diferentes níveis de salinidade para o desenvolvimento e o crescimento da carnaúba, espéci...

Illegal harvesting affects the success of fishing closure areas.

Copyright © Marine Biological Association of the United Kingdom 2010. ; There is clear evidence that marine reserves can be used as effective tools to foster the recovery of disturbed ecosystems. In the Azores, intense exploitation of the patellid limpets Patella candei and P. aspera has led to a rapid decline in their populations and subsequent collapse of the fishery in 1985. In 1993, legislation was passed ...

Dissemination of Mycobacteria to the Thymus Renders Newly Generated T Cells Tol...

Electroepoxidation of natural and synthetic alkenes mediated by sodium bromide

Electroepoxidation of synthetic alkenes (styrene, trans-stilbene and trans-b-methylstyrene) and of some natural terpenes (limonene, terpinolene, geraniol, a-terpinene, g-terpinene and a-terpineol) mediated by sodium bromide was performed in MeCN:H2O (4:1) at platinum electrodes. The indirect electrochemical oxidation of the olefins led to the corresponding epoxides in yields ranging from 23% to 79%. ; L’électr...

Actividades de educação ambiental realizadas pelo CCPA no decorrer da XIII Expe...

XIII Expedição Científica do Departamento de Biologia - Flores e Corvo 2007. ; Tendo em conta a crescente importância da educação ambiental para a construção da cidadania, força motriz de um desenvolvimento sustentável, o Centro de Conservação e Protecção do Ambiente (CCPA) promoveu a realização de diversas actividades de cariz teórico-prático sobre questões ambientais e de valorização do património biológico,...

Phenotypical and genotypical characterization of Bordetella pertussis strains i...

Whooping cough or pertussis was a major cause of childhood morbidity and mortality in the world until the introduction of a whole-cell vaccine in the 1940's. However, since the early 1980's whooping cough cases have increased in many countries, becoming an important problem of public health. This increase may be due to accuracy of laboratory diagnosis and reporting of the disease, a decline in immunity over tim...

Diretriz de fibrilação atrial

Mielite Transversa

Os autores apresentam três casos de mielite transversa de instalação aguda em doentes jovens, salientando a possível gravidade do quadro neurológico, a necessidade de excluir uma causa potencialmente tratável e a controvérsia da terapêutica com corticosteroides.

Transverse myelitis.

The authors report three clinical cases of acute transverse myelitis in young patients with emphasis given to the seriousness of this kind of pathology, the need to exclude a potentially treatable cause and the controversial corticosteroid treatment. ; The authors report three clinical cases of acute transverse myelitis in young patients with emphasis given to the seriousness of this kind of pathology, the nee...