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  • 1990-1994  (4)
  • 25.70.Gh  (1)
  • 36.40.+d  (1)
  • 71.30.+h  (1)
  • Interventional radiology  (1)
  • Polymer and Materials Science  (1)
  • Nostoc muscorum
  • sesquiterpenes
Datenquelle
Materialart
Erscheinungszeitraum
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Percutaneous dilatation of benign ureteric structures following radical hysterectomy (1992)
    Springer
    European radiology 2 (1992), S. 62-65 
    Details
    ISSN: 1432-1084
    Schlagwort(e): Ureteric structures ; Radical hysterectomy ; Interventional radiology
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Following radical hysterectomy in 42 patients with early invasive carcinoma of the cervix, ureteric strictures developed in 7 patients. They were long, smooth strictures situated in the distal ureter and thought to be of benign origin, related to devascularisation of the ureter. All but one were diagnosed within 8 weeks of surgery and all were treated by a percutaneous approach using a combination of dilating catheters and ureteric stenting: a balloon catheter was used in one patient. In 5 patients treatment was successful. In 1 patient there was an equivocal result as she developed tumour recurrence at 8 months, while in another the procedure failed, probably because the stricture was not detected for 12 months and she had also had radiotherapy. The follow-up period ranged from 6 to 26 months (mean l5 months). Although previous workers have indicated that ureleric strictures following radical hysterectomy would not be expected to respond to transluminal dilatation, in view of the devascularisation of the ureter our experience shows that the majority of these partially devascularised ureters are amenable to percutaneous techniques if detected within 2–3 months of surgery.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00714184
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  • 2
    Digitale Medien
    Digitale Medien
    Mass and charge release by the evaporation of particles from compound nuclei around mass 60 (1992)
    Springer
    The European physical journal 342 (1992), S. 61-66 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.60.Dr ; 25.55.-e ; 25.70.Gh
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Reaction product cross sections have been measured for reactions of4He projectile with54,56Fe,58Ni and59Co targets in the bombarding energy range 14–27 MeV. The cross-section-weighted average charge $$\overline {\Delta Z}$$ and mass $$\overline {\Delta A}$$ removed from the compound system were deduced and compared with results reported for heavy-ion induced reactions. Variation of $$\overline {\Delta A}$$ with E CN * is independent of the initial angular momentum of compound nucleus in theA=60 mass region in contrary to the rare-earth region. This would suggest a strong angular momentum removal from the compound nucleus by evaporation of particles forA≈60 nuclei. The average evaporated charge $$\overline {\Delta Z}$$ depends on both the CN excitation energy E CN * and the compound nucleusN andZ numbers. The $$\overline {\Delta A}$$ and $$\overline {\Delta Z}$$ dependence on excitation energy and the projectile-target combination can be understood in terms of the statistical model calculations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01294489
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  • 3
    Digitale Medien
    Digitale Medien
    Evolution of bulk-like properties in mercury microclusters (1990)
    Springer
    The European physical journal 17 (1990), S. 309-312 
    Details
    ISSN: 1434-6079
    Schlagwort(e): 71.30.+h ; 36.40.+d
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The transition from non-metallic to metallic behavior of mercury microclusters, Hg n , withn ranging from 2 to 79, is investigated using first principles tight-binding linear muffin-tin orbital method. Then dependence of the ionization potential, the cohesive energy, the energy gap, and the nature of the bonding indicates metallic behavior for Hg n withn≧80. The average bond length of Hg clusters is found to be larger than that of the bulk. Our results are in good agreement with experiments.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01437371
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  • 4
    Digitale Medien
    Digitale Medien
    TSDC studies on thermoelectrets of CR-39(DOP) (1990)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 41 (1990), S. 48-51 
    Details
    ISSN: 0323-7648
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Beschreibung / Inhaltsverzeichnis: Aus dem Polymer CR-39(DOP) wurden Thermoelektrete formiert, und die thermisch stimulierten Entladungsströme wurden gemessen. Die Einflüsse unterschiedlicher Formierungstemperaturen, unterschiedlicher Feldstärken und der Lagerzeit wurden untersucht, um das Elektretverhalten dieses Materials zu beschreiben. Die Polarisation ist dipolaren Ursprungs. Die Aktivierungsenergic und die Relaxationszeit wurden berechnet.
    Notizen: Thermoelectrets of CR-39(DOP) were formed and their thermally stimulated discharge current studied. In the present work, effects of different forming temperatures, polarizing fields and storage times have been studies with a view to understand the electret behaviour of this material. The polarization seems to have a dipolar origin. The activation energy and relaxation times have also been calculated.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/actp.1990.010410112
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