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  • Articles: DFG German National Licenses  (15)
  • 1980-1984  (15)
  • 1
    Electronic Resource
    Electronic Resource
    Intranasal Immunotherapy with Polymerized Grass Pollen Allergens (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 37 (1982), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The effect of immunotherapy by intranasal insulflation a of Lolium perenne allergens modified with glutaraldehyde (Glu-Rye) was tested by a stratified placebo-controlled trial in 16 adult subjects with hay fever. The purpose of this pilot study was to determine whether the treatment could reduce nasal sensitivity to allergen in provocation tests. Modification of the allergen was shown to include polymerization and reduced allergenicity, but retained immunogenicity. Nasal sensitivity to unmodified L. perenne allergens was measured by threshold-type quantitative nasal challenge and posterior rhinometry for measurement of nasal airway resistance. In challenge tests after a 10-week course of intranasal preseasonal treatment with Glu-Rye, nasal sensitivity was reduced, but this effect was not maintained when testing was repeated 9 months after treatment. Post-seasonal serum levels of IgE antibodies to L. perenne were also not significantly affected by the treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1982.tb01906.x
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  • 2
    Electronic Resource
    Electronic Resource
    Nuclear photoexcitation and delbrück scattering studied in the energy range 2–8 MeV (1981)
    Springer
    The European physical journal 300 (1981), S. 193-203 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Elastic scattering by nuclei in the range of mass numbers between 64 and 238 has been studied with monochromatic photons in the energy range between 2 and 8 MeV. These photons were provided either by a Ti(n,γ) source installed in the tangential through channel of the Grenoble high flux reactor, or by24Na and56Co sources produced by deuteron bombardment of Al or Fe at the Göttingen cyclotron. The photoexcitation of 23 nuclear levels has been observed and the decay properties and groundstate widths of the majority of these levels have been determined. For the lead scattering target the coherent elastic differential cross section has been studied in detail. There is evidence that below the photo-neutron threshold the elastic scattering via virtual photoexcitation of the nucleus can be approximated by extrapolating the real part of the Giant Dipole Resonance amplitude along a Lorentzian curve. Coulomb corrections to Delbrück scattering seem to play a small role at 6.5 MeV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412295
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Nuclear resonance fluorescence in121Sb (1981)
    Springer
    The European physical journal 302 (1981), S. 61-62 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Usingγ quanta from a56Co source, resonance fluorescence from a 3,452 keV level in121Sb was observed. Four deexcitingγ transitions were identified. The profile of theγ emission line, investigated by means of a high speed centrifuge, yields with a novel variety of Doppler shift analysis a lifetime of τ4,298=(110±50)fs for theγ emitting 4,298 keV level in56Fe. The lifetime of the 3,452 keV level was determined to beτ 3,452 =(200±100)fs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425103
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  • 4
    Electronic Resource
    Electronic Resource
    Electronic rearrangement on molecules accompanyingβ-decay investigated by nuclear resonance fluorescence (1983)
    Springer
    The European physical journal 311 (1983), S. 253-257 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using gaseous60CoI2 sources, the velocity distribution of60Ni nuclei afterβ-decay of60Co has been measured by the nuclear-resonance-fluorescence coincidence (NRFC) method. By comparison with model calculations, information is obtained on the rearrangement of electrons on the molecule as a consequence of the change of nuclear charge. In 42% of the rearrangement processes bound (NiI2)+ or (NiI)+ molecule ions are formed. In 24% the molecule is singly charged but with the bonds between Ni and its molecular partners ruptured. In 34% the charging of more than one molecular partner leads to Coulomb explosion of the molecule. The probability of finding more than one charge on the molecule is larger by a factor of 2 as compared to the probability for electron shake-off on an isolated Ni atom.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415678
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  • 5
    Electronic Resource
    Electronic Resource
    Nuclear resonance fluorescence in238U and a new approach to Doppler-shift-attenuation using high speed rotation (1981)
    Springer
    The European physical journal 300 (1981), S. 43-46 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using56Co sources, a 3.254 MeV level in238U was photoexcited by aγ-line emitted in the decay of the 4.100 MeV level in56Fe. 10γ-transitions deexciting this 3.254 MeV level were identified. Spin and parity were determined to be 1−. By moving the56Co source in a high speed centrifuge the profile of the 3.254 MeV emission line was investigated. By applying a new variety of Doppler shift analysis a lifetime ofτ Fe=55±25fs was obtained for the 4.100 MeV level in56Fe. The cross section for nuclear resonance fluorescence yields a lifetime ofτ U =0.33±0.12 ps for the 3.254 MeV level in238U.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412613
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  • 6
    Electronic Resource
    Electronic Resource
    Nuclear resonance scattering studies on238U using a dense series of γ-ray photons (1983)
    Springer
    The European physical journal 314 (1983), S. 171-179 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using the181Ta(n, γ) and141Pr(n, γ) reactions to provide a dense series of intenseγ-rays, photoexcitation of the238U nucleus has been studied in the 4–7 MeV range. It is shown that most of the effective cross sections are in line with an average strength function as given by the GDR Lorentzian line superimposed by Porter-Thomas fluctuations. Resonances of nonstatistical strength are found close to 5.2 MeV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01879875
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Stopping of slow recoil atoms in gases (1981)
    Springer
    The European physical journal 301 (1981), S. 101-107 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Nuclear Resonance Fluorescence spectra contain information on the slowing-down behaviour of recoiling atoms in the energy range pertinent to the specific reaction. On the basis of conventional transport theory, measured spectra for arsenic atoms with energies ≲15 eV slowing down in helium are analysed. The assumption of continuous slowing down turns out to be well justified, and the thermal motion of the gas atoms is shown to influence the effective stopping power only slightly. Somewhat surprising in view of uncertainties concerning the charge state of the recoiling atoms, theoretical predictions based on Lenz-Jensen elastic interaction agree well with the measured spectra. At present, the experimental data do not allow direct inversion, but the calculated spectra are shown to depend sensitively on the stopping-power input.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01419238
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  • 8
    Electronic Resource
    Electronic Resource
    A preciseB(E2) for the first 2+ state in52Cr (1981)
    Springer
    The European physical journal 301 (1981), S. 75-79 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A resonance fluorescence self-absorption experiment has been carried out for the 1,434 MeV first excited state in52Cr, using gaseous52MnI2 as source for the exciting gamma radiation. TheB(E2,0 1 + →2 1 + )=(687±13)e 2 fm4 is in agreement with the most recent Coulomb excitation and inelastic electron scattering experiments yielding (660±30)e 2 fm4 and (634±39)e 2 fm4, respectively, and disagrees with former electron scattering experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412466
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Microangiographic study of the normal anatomy of the cerebral venous system in rats (1984)
    Springer
    Neuroradiology 26 (1984), S. 137-140 
    Details
    ISSN: 1432-1920
    Keywords: Microangiography ; cerebral veins ; venous angiomas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Microangiographic serial cuts were performed in 20 Sprague-Dawley rats for a systematic study of the normal anatomy of the cerebral veins. The draining pathways of the cerebral and cerebellar cortex, basal ganglia, hypothalamus, hippocampus and the midbrain are described and discussed with regard to their different functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00339862
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  • 10
    Electronic Resource
    Electronic Resource
    CT-Differentialdiagnose und Verlaufsuntersuchungen bei intracerebralen Blutungen (1982)
    Springer
    European archives of psychiatry and clinical neuroscience 231 (1982), S. 171-185 
    Details
    ISSN: 1433-8491
    Keywords: Computerized tomography ; Intracerebral haematomas ; Differential diagnosis ; Resorption of haematomas ; Computertomographie ; Intracerebrale Hämatome ; Differentialdiagnose ; Hämatom-Resorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 73 Patienten mit spontanen und traumatischen intracerebralen Blutungen werden durch CT-Verlaufsuntersuchungen Gesetzmäßigkeiten der Hämatomresorption aufgezeigt. Nach computertomographischen Beurteilungskriterien ist die Resorption aller intracerebraler Hämatome weitgehend unabhängig von dem Maximaldurchmesser bis zum Ende der 7. Woche ohne Ausnahme abgeschlossen. Lediglich kleinere Blutungen bis zu 2cm Durchmesser wiesen auch schnellere Resorptionsverläufe auf. Die pathophysiologischen Grundlagen des Resorptionsvorganges bei größeren Blutungen sowie die möglichen Ursachen für die schnellere Resorption im Marklager- und Stammgangliengebiet werden besprochen. Ein Vergleich der CT-Merkmale von intracerebralen Blutungen unterschiedlicher Ätiologie zeigt, daß diese keine eindeutige differentialdiagnostische Aussagekraft für die Klärung der Blutungsursache, jedoch prognostische Bedeutung besitzen.
    Notes: Summary The CT findings of 73 patients with spontaneous and traumatic intracerebral haematomas are described. The course and pattern of resorption of the bleeding is evaluated. It is shown that the resorption of all haematomas is terminated by the end of week 7 independent of their maximum diameter. Only smaller haemorrhage of less than 2cm can be resorbed in a shorter time. Moreover, the underlying pathophysiologic mechanisms of faster resorption of bleeding located in the basal ganglia and the neighbouring white matter are discussed. The CT findings revealed no clear-cut characteristics for differential diagnosis of the etiology of haematomas, but proved very helpful in defining the prognosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00343838
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    Paper (German National Licenses)
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