Encontrados 112 documentos, a visualizar página 1 de 12

Epilepsia Mioclónica Grave do Lactente. 6 Casos Clínicos

A Epilepsia Mioclónica Grave do Lactente representa uma parte significativa das epilepsias graves da infância em geral e das epilepsias mioclónicas em particular. Inicialmente descrita por Dravet, a sua terapêutica constitui um dos maiores desafios da epileptologia infantil.Como não existe nenhum marcador biológico, o diagnóstico é de exclusão, baseado nos dados clínicos e electroencefalográficos. Embora se pos...

Efeitos da rega e do regime hídrico em olival super intensivo no Alentejo

O presente estudo caracteriza os efeitos de uma condução típica de rega em olival super-intensivo (1,35 x 3,75 m) na região de Évora (Alentejo) e em solo Cambissolo Êutrico (WRB, 1998). Analisa-se o regime hídrico praticado em dois tratamentos de rega, normal (FI) e deficitário (DI), este com redução da dotação de rega depois do endurecimento do caroço e seus efeitos sobre a transpiração, a humidade do solo e ...

Paleoproductivity variations off Morocco during Interglacial periods

Early Cambrian granitoids of North Gondwana margin in the transition from a con...

Two distinct Cambrian magmatic pulses are recognized in the Ossa-Morena Zone (SW Iberia): an early rift-(ER) and a main rift-related event. This Cambrian magmatism is related to intra-continental rifting of North Gondwana that is thought to have culminated in the opening of the Rheic Ocean in Lower Ordovician times. New data of whole-rock geochemistry (19 samples), Sm–Nd–Sr isotopes (4 samples) and ID–TIMS U...

Natural nanomaterials : reappraising the elusive structure of the nano-sized mi...

Ferrihydrite is natural ferric oxyhydroxide occurring exclusively nanocrystalline. With ideal formula 5 Fe2 O3 . 9 H2 O, ferrihydrite is quite abundant in sediments, weathering crusts and mine wastes, being characteristic of red pre-soils formed by loose weathered rock plus mineral debris (regoliths) and commonly designated as “2-line” or “6-line” on the basis of the broadened maxima observed in the X-ray di...

Decorative 18th century blue-and-white portuguese tile panels : a type-case of ...

Decorated glazed ceramic tiles are used as an ornamental art, constituting an important cultural heritage whose preservation is mandatory. Environmental conditions are responsible for the degradation of exposed ancient tile panels originating various pathologies, related to the development of microorganisms. This is the case of a valuable 18th century blue-and-white Portuguese tile panel called “Cura do Cego,...

Ascertaining the degradation state of ceramic tiles : a preliminary non-destruc...

Conserving the cultural heritage is a general concern and the use of non-destructive techniques to characterize ancient materials is important. Serious deterioration effects in environmentally exposed ancient glazed ceramic tiles arise from the development of micro-organisms (algae/fungi) within the pore system. Subsequent biodegradation processes are particularly harmful once the decorated glaze is damaged by ...

Molybdenite as a rhenium carrier : first results of a spectroscopic approach us...

The chemical and physical properties of rhenium render it a highly demanded metal for advanced applications in important industrial fields. This very scarce element occurs mainly in ores of porphyry copper-molybdenum deposits associated with the mineral molybdenite, MoS2, but it has also been found in granite pegmatites and quartz veins as well as in volcanic gases. Molybdenite is a typical polytype mineral w...

Scarce industrial commodities : a glance at the possible rhenium availability i...

Diagnostics of glaze pathologies in ancient (XVII-XVIII cents.) decorative blue...