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  • 1
    Electronic Resource
    Electronic Resource
    A case of tubulo-interstitial nephritis with exfoliative dermatitis and hepatitis due to phenobarbital hypersensitivity (1992)
    Springer
    European journal of pediatrics 151 (1992), S. 69-72 
    Details
    ISSN: 1432-1076
    Keywords: Phenobarbital ; Interstitial nephritis ; Toxic hepatitis ; Exfoliative dermatitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Severe exfoliative dermatitis and liver dysfunction developed in a 5-year-old girl 3 weeks after initiation of phenobarbital therapy. Liver function improved gradually after discontinuation of phenobarbital. During the convalescent stage an initially mild renal dysfunction was exacerbated by episodes of post-transfusion haemolysis. Liver biopsy revealed moderate parenchymal damage with subacute cellular infiltration. Renal biopsy demonstrated the cardinal findings of interstitial nephritis, excluding the possibility of acute tubular necrosis caused by haemolysis. Serial lymphocyte transformation studies and skin patch tests gave positive results for phenobarbital, supporting the view that these were unusual complications of phenobarbital hypersensitivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02073898
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Observation of laser-cooled Be+ -ion clouds in a Penning trap (1995)
    Springer
    Applied physics 61 (1995), S. 285-289 
    Details
    ISSN: 1432-0649
    Keywords: 32.80.Pj ; 05.70.Fh
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Be+ ions trapped in a Penning trap are laser-cooled to about 10 mK. The excitation spectra of ion clouds containing about 500 ions are obtained by scanning the frequency of the cooling laser and discontinuities in these spectra are observed because of phase transitions. When the cooled ions are heated electrically by applying an rf voltage, no phase transition occurs and the spectra become continuous. Two-dimensional measurement of the ion clouds is carried out and the abrupt change in the shape of the ion cloud due to the phase transition is observed. When many ions are trapped and cooled, the phase transition occurs partially and a transient state where two states are mixed can be observed. The static properties of the ions are also measured by using an additional probe laser and the results of experimental measurements are compared with theoretical predictions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01082048
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Laser cooling of a small number of Be+ ions in a penning trap (1993)
    Springer
    Applied physics 57 (1993), S. 141-144 
    Details
    ISSN: 1432-0649
    Keywords: 32.80.Pj ; 05.70.Fh ; 34.40.+n
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Be+ ions stored in a Penning trap were cooled by a laser beam perpendicular to the magnetic field. The cooled ions are strongly coupled and phase transitions of up to 100 ions were observed. In experiments with only a few ions stored in the trap, a stepwise decrease in fluorescence intensity was observed. All steps are of the same size and so every step is attributed to a single ion. The discrete changes in fluorescence occurred more frequently when the background pressure was increased, caused by collisions between stored ions and background neutral molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00425998
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    Paper (German National Licenses)
    Fulltext
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