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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    The European physical journal 341 (1992), S. 227-234 
    ISSN: 1434-601X
    Schlagwort(e): 75.25.+z ; 78.70.Dm ; 76.60.−k
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract It is demonstrated how circularly polarized x-rays can be used in nuclear and solid state physics. Detection of the radiation pattern of circularly polarized x-rays emitted in highly converted decays of oriented radio isotopes allows the determination of nuclear magnetic moments. Studying the absorption profiles of energy-tunable intense circularly polarized x-rays emitted from high-energy electron storage rings provides a powerful method to determine spin structure of electronic states, local magnetic moments and magnetic short range order in ferromagnetic materials.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    The European physical journal 93 (1994), S. 449-454 
    ISSN: 1434-6036
    Schlagwort(e): 61.12.Gz ; 61.66.Dk ; 75.25.+z ; 75.30.Hz ; 75.30.Mb
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Nuclear and magnetic structures of an annealed polycrystalline sample of the heavy-fermion compound CePd2Al3 prepared by arc-melting were investigated by neutron powder diffraction. The chemical structure corresponds well to the ordered hexagonal PrNi2Al3-type structure. The antiferromagnetic structure of CePd2Al3 with an ordered magnetic momentμ Ce=0.47(2)μ B at saturation is remarkably similar to that in the heavy fermion superconductor UPd2Al3. The additional incommensurate magnetic structures reported previously both for UPd2Al3 and CePd2Al3 are not observed in the present sample of CePd2Al3. At 1.4 K the magnetoresistivity of CePd2Al3 measured up to 14 T indicates only one field-induced phase transition at 3.0 T.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Journal of neural transmission 5 (1993), S. 67-75 
    ISSN: 1435-1463
    Schlagwort(e): Glutamate ; excitatory neurotransmitter ; lamotrigine ; Parkinson's disease ; basal ganglia pathways
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Recent experiments provide evidence that the NMDA-antagonist MK-801 has a locomotor-stimulating effect in monoamine-depleted rodents. These findings are based upon a hypothetical pathway-circuit including the basal ganglia as a model reflecting hypo- and hyperkinetic movement disorders. We have treated 5 patients suffering from Parkinson's disease with the antiepileptic drug “lamotrigine” which does not appear to be an NMDA-antagonist but acts functionally as a glutamate antagonist by inhibition of presynaptic glutamate release.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Journal of neural transmission 10 (1995), S. 199-206 
    ISSN: 1435-1463
    Schlagwort(e): Glutamate ; glutamate release ; antiglutamatergic activity ; excitatory neurotransmitter ; Lamotrigine ; Parkinson's disease ; basal ganglia ; neurotransmission ; therapy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Antiglutamatergic acting substances are considered to be useful tools for the treatment of hypokinesia in animal models for Parkinson's disease (PD). Moreover, most known antiglutamatergic compounds act postsynaptically and are either toxic or weak with regard to their clinical potency. The antiepileptic drug “Lamotrigine (LTG)” inhibits presynaptic glutamate release and may therefore provide a novel approach for PD therapy. Encouraging results from a pilot project led us to establish a placebo controlled trial including 20 patients with PD. The substance was generally well tolerated. There was a significant difference in the investigator's overall assessment of efficacy (6/10 vs. 2/10 improvement; p〈0.05) and a tendency for LTG to exhibit a beneficial effect in some registration parameters, but no significant differences in motor response were found between the two groups. We failed to confirm that LTG mediates a strong antiparkinsonian effect in this small study, but to clearly demonstrate slight or moderate beneficial effects larger groups are required.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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