24 research outputs found
A Large Area CCD Camera for the Schmidt Telescope at the Venezuelan National Astronomical Observatory
We have designed, constructed and put into operation a large area CCD camera
that covers a large fraction of the image plane of the 1 meter Schmidt
telescope at Llano del Hato in Venezuela. The camera consists of 16 CCD devices
arranged in a 4 x 4 mosaic covering 2.3 degrees x 3.5 degrees of sky. The CCDs
are 2048 x 2048 LORAL devices with 15 micron pixels. The camera is optimized
for drift scan photometry and objective prism spectroscopy. The design
considerations, construction features and performance parameters are described
in the following article.Comment: 34 pages, 18 figures, accepted for publication in PAS
Manifestações neurológicas na intoxicação de lactentes pela associação dimeticona e homatropina: relato de 6 casos Neurological manifestations in the intoxication of infants by dimethicone plus homatropine: report of 6 cases
OBJETIVO: alertar que o uso da associação dimeticona/homatropina (Espasmo Luftal®) em recém-nascidos e lactentes de até dois meses, pode causar episódios disfuncionais transitórios extrapiramidais. MÉTODO: relato de 6 casos de crianças com menos de 2 meses, em uso diário da associação dimeticona/homatropina, que apresentaram sintomas agudos caracterizados por crises repetidas de curta duração com desvio tônico da cabeça para trás (opistótono), desvio do olhos para cima com olhar fixo e expressão de terror, postura mantida em hipertonia extensora dos 4 membros e emissão de choro e/ou sons guturais. RESULTADOS: os sintomas extrapiramidais desapareceram (e não retornaram) após a suspensão da associação dimeticona/homatropina. Não foram constatadas anormalidades no exame neurológico, eletrencefalograma e provas sanguíneas. CONCLUSÕES: a associação dimeticona/homatropina pode determinar em crianças com menos de 2 meses, quadro disfuncional dos gânglios da base. É importante diferenciá-lo das crises epilépticas generalizadas, a fim de se evitar a utilização, errônea, de drogas antiepilépticas.<br>OBJECTIVE: to alert that use of dimethicone plus homatropine in infants up to two months, may cause episodes of transitory extrapyramidal disturbances. METHOD: report 6 infants up to two months old, in daily use of dimethicone plus homatropine, that presented typical symptoms of the basal ganglia dysfunction, characterized by repeated crisis of short duration with tonic back shift of the head (opisthotonos), deviation of the eyes upward with looking fixed and terror expression, maintained in extending hipertonia posture of the 4 members and cry and/or guttural sounds emission. RESULTS: the extrapyramidal symptoms disappeared (and did not return) after interruption of dimethicone plus homatropine. Abnormalities were not verified in neurological examination, EEG and blood tests. CONCLUSIONS: the associated dimethicone/homatropine can produce in infants with less than 2 months, basal ganglia disturbances. The differentiation of these symptoms with the widespread epileptic crisis is essential, in order to avoid the erroneous use of antiepileptic drugs