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  • 1
    ISSN: 1432-0533
    Keywords: Gruber's syndrome ; Heterotopia in spinal cord ; Micropolygyria in neocortex ; Purkinje cell heterotopia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A macrosomic male infant with multiple malformations survived for 4 days. His external dysplasias comprised macrocephalus, cheilopalatoschisis, auricular anomalies, and unilateral hexadactyly; his internal dysplasias included cysts of kidneys and pancreas, and a patent foramen ovale. The child had frequent generalized convulsions and died of bronchopneumonia. Chromosomal analysis was normal. The main neuropathological findings were a cleft foramen magnum, micropolygyria and heterotopia of the neocerebrum, hypoplasia of the vermis and central white matter of the cerebellum, diffuse heterotopia of Purkinje cells, and unique heterotopic gray matter in the central cervical cord. The infant's disorder was classified as Gruber's syndrome, and this report may be the first detailed description of CNS malformations in this syndrome which, however, are probably not specific for this syndrome. The neuropathological findings were compatible with a heterochronic pathogenesis. This and the familial occurrence of malformations suggest a genetic nature of the syndrome.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 26 (1981), S. 227-230 
    ISSN: 1432-0630
    Keywords: 61.70Bv ; 72.80Ey ; 78.60Fi
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The effect of particle size on life time in electroluminescent phosphor was investigated using fractionated samples. The life time of large-particle size phosphors was longer than that of small-particle size phosphor. It was found that particle size has a close relation with the lattice-parameter magnitude; the lattice parameter was larger in a small-particle size phosphor when the activator and coactivator content were the same. It was concluded that the lattice parameter was an important brightness life-time factor.
    Type of Medium: Electronic Resource
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