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  • accelerators  (2)
  • cascade  (2)
  • Mammareduktionsplastik  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 349 (1979), S. 572-573 
    ISSN: 1435-2451
    Keywords: Reduction mammaplasty ; Mammareduktionsplastik
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Wegen durch das Gewicht der hypertrophierten Mammae bedingter Schmerzen wurden 62 Mammareduktionsplastiken nach dem Verfahren von Strömbeck durchgeführt. An operativen Komplikationen traten 5 ausgedehnte Wundinfektionen, 2 partielle Mamillennekrosen und 2 lagerungsbedingte reversible Armplexusparesen auf. Eine Einziehung der Mamille und ausgedehnte Narben beeinträchtigen in einzelnen Fällen das kosmetische Ergebnis. Eine Spätverschlechterung des Op.-Ergebnisses trat infolge erneuter Hypertrophie oder Ptosis in 5 Fällen auf. Alle Patientinnen würden den Eingriff wieder vornehmen lassen.
    Notes: Summary Due to the pain caused by extreme mammary hyperplasia with associated ptosis 62 breast reductions were carried out using the Strömbeck method. Surgical complications arose in few cases: 5 extensive wound infections, 2 partial areola necroses and 2 reversible brachial palsies caused by the intraoperative position of the patients. A nipple retraction deformation of the areola or extensive scars impair the cosmetic results in individual cases. A late debasement of the operation result arose from recurrence of hypertrophy or ptosis in 5 cases. All the patients would undergo the operation again if required.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1572-9540
    Keywords: beam cooling ; slow muon production ; accelerators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Frictional cooling — that is cooling a beam of very low-energetic charged particles by moderation in matter and simultaneous acceleration in an electrostatic field — has been shown to be feasible during our experiments in 1994/1995 at PSI. In agreement with our previous closed-form and Monte Carlo calculations we found a significant increase in spectral density and a decrease in the angular spread in the case of a beam of negative muons.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 119 (1999), S. 71-76 
    ISSN: 1572-9540
    Keywords: exotic atom ; cascade ; X-ray spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The intensities of X-rays from muonic atoms formed in low pressure Ne, O2, N2, He, and H2 gas was measured. For the pressure chosen external electron refilling can be neglected. Absolute yields were extracted and compared to results of cascade calculations. Knowledge of the yields of the circular X-ray transitions allows an in situ efficiency calibration of X-ray detectors down to energies of 1.5 keV.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1572-9540
    Keywords: exotic atom ; cascade
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The complex balance of processes occurring at the cascade of exotic H-atoms is usually described by the so-called standard cascade model, but this model neglects variations of the kinetic energy T of the exotic atom during the cascade which are crucial for the analysis of several important experiments. New experimental results on T µp at H2 pressures between 0.063 and 4 hPa demonstrate the importance of acceleration due to Coulomb de-excitation processes at highly excited µp levels n 〉 9. The data at the lowest density are sensitive to the initial values of the kinetic energy and n-levels at the moment of atomic capture. From the measured low-energy tail of the T µp-distribution it can be concluded that a considerable part of the µp(2s) atoms is metastable at pressures of a few hPa.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1572-9540
    Keywords: beam cooling ; slow muon production ; accelerators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The classical methods used in beam cooling are hard to be adapted for a beam of short-lived elementary particles. A novel method, the so-called frictional cooling – that is cooling a beam of low-energy charged particles by moderation in matter and acceleration in an electrostatic field – has been shown to be feasible. In our experiments performed in 1994/1995 a beam of short-lived particles was cooled for the first time ever. Utilizing frictional cooling on a beam of slow negative muons we observed increase in phase space density by about one order of magnitude.
    Type of Medium: Electronic Resource
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