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  • (Human)  (1)
  • Back-ends  (1)
  • Defect reconstruction  (1)
  • 1
    ISSN: 1434-3940
    Keywords: Schlüsselwörter ; Mikrovaskuläre Knochentransplantate ; Präformierte Fibulatransplantate ; ITI®-Implantate ; Defektrekonstruktion ; Keywords ; Microvasculary bone flaps ; Prefabricated fibula flaps ; ITI®-Implants ; Defect reconstruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: The reconstruction of extensive jaw defects is frequently only possible with microvascular bone flaps. Here we are presenting an operative technique using prefabricated fibular flaps and osseointegrated implants. In a first operation, the fibula is prepared with implants, split skin graft, and a nonresorbable membrane. The jaw defect is reconstructed 6 weeks later and can be treated directly with a prosthesis thanks to osseointegrated implants. The technique is described with reference to 5 patients already operated according to this technique and the initial findings are evaluated.
    Notes: Die Rekonstruktion von ausgedehnten Kieferdefekten ist häufig nur mit mikrovaskulären Knochentransplantaten möglich. Es wird hier eine Operationstechnik vorgestellt, bei der die Fibula präformiert wird. In der 1. Operation werden ITI-Implantate mit SLA-Oberfläche in die Fibula eingesetzt. Die Implantate und die Fibula werden mit Spalthaut und einer 1 mm dicken, nicht resorbierbaren Membran überdeckt. 6 Wochen nach der 1. Operation erfolgt in der 2. Operation die eigentliche Rekonstruktion des Kieferdefektes. Innerhalb dieser 6 Wochen sind die Implantate osseointegriert. Die Spalthaut, die wie bei einer Vestibulumplastik mit dem Periost verwachsen ist, bildet das stabile periimplantäre Weichgewebe. Die Implantate werden intraoperativ mit der vorbereiteten Suprastruktur verschraubt und gewähren durch die präoperativ bestimmte Okklusion die korrekte Positionierung des Transplantates. Postoperativ sind zudem die sofortige Funktion und Belastung möglich. Anhand von 5 Patienten werden diese Technik beschrieben und deren Resultate ausgewertet.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Gene Structure and Expression 1172 (1993), S. 193-196 
    ISSN: 0167-4781
    Keywords: (Human) ; (Rat) ; Histone H1d gene ; Sequence comparison ; Sequencing
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Experimental astronomy 9 (1999), S. 17-38 
    ISSN: 1572-9508
    Keywords: Radio Astronomy ; Array Systems ; Acousto-Optical Spectrometer ; Back-ends ; Radiometers ; Heterodyne Instrumentation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this paper an array acousto-optical spectrometer (AOS) with four 1 GHz bands and a frequency channel spacing of 1 MHz is presented. A discussion about the requirements which have to be fulfilled by the presented instrument for applications in radio astronomy is given as well as e detailed description of the optical design. Remarkable test results have been achieved such as an Allan-Variance minimum time of about 1000 s, identical noise performance, and identical frequency calibration of all bands. The reproducibility of measurements has been demonstrated by tests with CH3CN, using an absorption cell. The question of the maximum number of bands per array AOS is discussed. Although it may seem promising to increase the number of bands per optical unit to e.g. eight or more instead of four, a strong limitation has been found due to the increasing r.f. power level on the Bragg cell which affects the baselines of the spectra.
    Type of Medium: Electronic Resource
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