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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 107 (1985), S. 7216-7218 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Electrical engineering 57 (1975), S. 223-233 
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Contents A suitable model for a general inductive levitation system is presented and then treated by means of the vector potential. The solutions are described by two-dimensional Fourier series and include treatment of a finite secondary width and an arbitrary cross section. The exitation system consists of superconducting coils which are arranged in normal flux, and null flux configuration, respectively. From the magnetic field, the force components for levitation, guidance and drag are determined.
    Notes: Übersicht Nach der Beschreibung der Voraussetzungen und des Rechenmodells werden die Differentialgleichungen des Vektorpotentials mit Hilfe von Reihenansätzen gelöst. Die endliche Schienenbreite, ja sogar Schienenquerschnitte beliebiger Form können durch eine Reihendarstellung der elektrischen Leitfähigkeit in den Ansatz einbezogen werden. Die Stromverdrängungserscheinungen werden bei endlicher Leiterdicke in zwei Ebenen als voneinander unabhängig betrachtet. Das Erregersystem ist als Spulengruppe in supraleitender Ausführung und in Normal-oder Nullflußanordnung vorgesehen. Aus den drei Komponenten des magnetischen Flusses lassen sich Trag-, Seiten-und Bremskräfte berechnen.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 15 (1936), S. 667-668 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 48 (1939), S. 29-31 
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Der Trytophangehalt im Eiweiß verschiedener Organe der Ratte ist nicht gleich, den höchsten Gehalt hat Niere, den geringsten Milz und Lunge. Der Gehalt desJensen-Sarkoms beträgt 0,81% Tryptophan-N/Eiweiß-N.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1106
    Keywords: Key words Tremor cells ; Parkinson’s disease ; Rest tremor ; Human globus pallidus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Many previous studies have demonstrated the existence of neurons with tremor-frequency activity (”tremor cells”) in the thalamus of Parkinson’s disease (PD) patients and these neurons are presumed to play a role in the pathogenesis of tremor. Since a major input to motor thalamus (Voa and Vop) is from the internal segment of the globus pallidus (GPi), neurons with tremor-frequency activity in motor thalamus may receive input from neurons in GPi. The aim of this study was to quantify the characteristics of tremor cells in human globus pallidus. In three PD patients with tremor undergoing microelectrode exploration of the globus pallidus prior to pallidotomy, 228 neurons were sampled, and 28 (12.3%) were identified to fire at the same frequency as the tremor. These ”tremor cells” were located in the ventral portion of GPi. Autocorrelogram analysis of the sampled spike trains of these 28 tremor cells was carried out over sequential 10-s time segments, and autocorrelograms showing maximal oscillatory activity were graded from 0 to 10. Average tremor cell oscillation grades ranged from 6.8 to 7.8, similar to those reported in the MPTP-induced primate model of parkinsonism. The average tremor cell oscillation grade varied between patients, as did the clinical measures of tremor severity. Tremor cells had oscillations in spike discharges at the same average frequency (4.2–5.2 Hz) as the patient’s tremor determined from the electromyogram and accelerometry records of one or more limbs (4.0–5.4 Hz), and the individual values were correlated (r 2=0.73) over the total range (3.7–5.6 Hz). The results of this study demonstrate the presence of neurons with 4–6 Hz tremor-frequency activity in GPi, supporting a role of the globus pallidus in the production of rest tremor in PD patients.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 19 (1965), S. 682-682 
    ISSN: 0001-5520
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 23 (1967), S. 183-184 
    ISSN: 0001-5520
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 19 (1965), S. 73-77 
    ISSN: 0001-5520
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 19 (1965), S. 290-291 
    ISSN: 0001-5520
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 46 (1990), S. 215-227 
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The equations of the spherical-wave dynamical diffraction theory for finite polyhedral crystals [Saka, Katagawa & Kato (1972). Acta Cryst. A28, 102-113, 113-120] that relate to the Borrmann-Lehmann interference effect have been cast into simple forms in order to display explicitly the leading periodicities and thereby facilitate comparison with experimental observations. The evolution of fringe profiles during passage from the low-absorption case to that of high absorption accompanied by strong anomalous transmission is discussed in detail and illustrated with series of computed profiles. Representative topograph patterns are compared with simulated images and exemplify the poor agreement between observed and calculated fringe spacings previously reported [Lang, Kowalski, Makepeace & Moore (1986). Acta Cryst. A42, 501-510]. The effect of lattice distortion in Borrmann-Lehmann interference is investigated by applying the ray-optical diffraction theory for mildly distorted crystals developed by Kato [J. Phys. Soc. Jpn (1963), 18, 1785-1791; (1964), 19, 67-77, 971- 985] with assumption of a constant strain gradient in the specimen. Two factors have been identified that can account for the apparent extreme sensitivity of Borrmann-Lehmann fringe spacings to lattice distortions. One factor arises as a geometrical consequence of the curvature of ray trajectories in the distorted crystals, the other derives from Kato's 'potential' term in the phase integrals of the crystal waves that recombine and interfere. Both factors depend upon the first power of the strain gradient. Under typical experimental conditions, strain gradients sufficiently small as to produce less than 1% contraction in Pendellösung fringe spacings can change Borrmann-Lehmann fringe spacings by more than a factor of two.
    Type of Medium: Electronic Resource
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