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  • 1
    Electronic Resource
    Electronic Resource
    Orientation in sintered bismuth seleno-telluride (1990)
    Springer
    Journal of materials science 1 (1990), S. 148-152 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A sintering process is described for the production of n-type bismuth telluride alloys, in which the powders are deposited from a dielectric liquid in a controlled manner using an electrodispersion technique. The degree of orientation is determined using an X-ray diffraction method and also by measuring the Seebeck coefficient in the intrinsic region of conduction. It is found that the results from the two methods are consistent with one another if one assumes a structural model that is intermediate between those of the thin disc and the long bar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694735
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Diagnosis and management of glutaric aciduria type I (1998)
    Springer
    Journal of inherited metabolic disease 21 (1998), S. 326-340 
    Details
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Glutaric aciduria type I (GA1) is a preventable cause of acute brain damage in early childhood, leading to a severe dystonic-dyskinetic disorder that is similar to cerebral palsy and ranges from extreme hypotonia to choreoathetosis to rigidity with spasticity. Degeneration of the putamen and caudate typically occurs between 6 and 18 months of age and is probably linked to changes in metabolic demand caused by normal maturational changes and superimposed catabolic stress. Recognition of this biochemical disorder before the brain has been injured is essential to outcome. Diagnosis depends upon the recognition of relatively nonspecific physical findings such as hypotonia, irritability and macrocephaly, and on performance of urine organic acid quantification by gas chromatography–mass spectrometry or selective searches of urine or blood specimens by tandem mass spectrometry for glutarylcarnitine. The diagnosis may also be suggested by characteristic findings on neuroimaging. In selected patients diagnosis can only be reached by enzyme assay. Specific current management by the authors of this paper includes pharmacological doses of L-carnitine, as well as dietary protein restriction. Metabolic decompensation must be treated aggressively to avoid permanent brain damage. Multicentre studies are needed to establish best methods of diagnosis and optimal therapy of this disorder.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005390105171
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    Paper (German National Licenses)
    Fulltext
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