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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 1247-1251 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Using valence-band and core-level photoemission spectroscopy (PES) and electrical device measurements, the effects of annealing on Au:n-type (110) GaAs Schottky diodes fabricated in ultrahigh vacuum have been studied. Similiar trends in the annealing-induced changes in the barrier height of Au:n-type GaAs were found for 0.2 and 15 monolayer coverages as determined by PES and for thick film coverages (1000 A(ring)) as determined by current-voltage (I-V) and capacitance-voltage (C-V) measurement techniques. In each case, the barrier height was found to be stable for temperatures between 30 and 200 °C and between 300 and 500 °C; while a gradual decrease in the barrier height was found for annealing temperatures of 200–300 °C. These changes are correlated with the formation of a Au-Ga rich layer at the interface during anneals at 200 to 300 °C. Leakage currents were found to dominate the I-V characteristics in the devices which were annealed above the Au-Ga eutectic temperature. These peripheral leakage currents were eliminated by mesa-etching the devices. This allowed more reliable barrier height determinations using device measurements for higher annealing temperatures than has been previously reported for the Au-GaAs system.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International archives of occupational and environmental health 42 (1978), S. 119-127 
    ISSN: 1432-1246
    Keywords: Organic dusts ; Allergic alveolitis ; Bird fancier's lung ; Immunology ; Counter-immunoelectrophoresis ; Sensitisation ; Pulmonary function diagnosis ; Ventilation ; Respiratory mechanics ; Diffusion ; Distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Studies to detect disorders of pulmonary function were performed on 42 workers at a poultry farm. All the subjects were exposed to organic dusts and sensitised to poultry antigens. Typical signs of bird fancier's lung were recorded in two of them. Included in all examinations were immunological diagnosis by means of counter-immunoelectrophoresis, systematic interviewing for case histories, and registration of respiratory symptoms. Pulmonary function was recorded by means of the following techniques: analysis of ventilation (flow-volume indices), respiratory mechanics of the larger airways and lung (body box plethysmography, oesophago-balloon technique), respiratory mechanics of the small airways (closing volume), distributional analysis, diffusion analysis, and blood gas analysis. A disorder of pulmonary function was recordable in 40 sensitised individuals. Such disorder being characterised by obstruction of the larger airways and slight inhomogeneity. The small airways were not narrowed. No restriction nor disturbed diffusion were established. The severity of obstruction was found to be related to the degree of sensitisation. The following more clearly pronounced changes in terms of functional diagnosis were recordable from two poultry workers with allergic alveolitis: obstruction of larger airways with concomitant restriction, marked inhomogeneity, and disorder of diffusion. The disorders, relatively discrete, led to mild PO2-reduction in sensitised individuals, whereas mild hypoxaemia was recorded from subjects with allergic alveolitis.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1289
    Keywords: Schlüsselwörter Rehabilitation ; pneumologische ; Pneumologie ; Rehabilitation ; Lungenerkrankungen ; Rehabilitation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zum Thema Asthma bronchiale, Lungenemphysem, entzündliche Erkrankungen des gesamten Respirationstrakts und alle Krankheiten, die zu chronischer Ateminsuffizienz führen, stellen die Hauptindikationen für die pneumologische Rehabilitation dar. Dazu zählen auch die in der letzten Zeit in das Zentrum besonderen Interesses gerückten Schlafatemstörungen. Die pneumologische Rehabilitation, die hierzulande historisch institutionell mit allen Maßnahmen der Tuberkulosebehandlung eng verbunden war und heute diagnostisch wie therapeutisch hervorragend ausgewiesen ist, hat eine lange und segensreiche Tradition zur ganzheitlichen Behandlung von Lungenerkrankungen unterschiedlichster Genese. Auch wenn unbestritten ist, daß in manchen Bereichen der Rehabilitation in den letzten Jahrzehnten das Anspruchsdenken von Patienten zu- und die Bereitschaft zu Mitarbeit und Eigenverantwortung eher abgenommen haben, dürfte dies für Lungenkranke vermutlich am letzten zutreffen. Die vorliegende Arbeit ist zugleich ein Appell, bei notwendigen sozialpolitischen Korrekturen Augenmaß zu bewahren. Gerade bei Lungenerkrankungen muß man einen „langen Atem” haben, um neben allen anderen therapeutischen Maßnahmen so schwierige Ziele wie Raucherentwöhnung oder den richtigen Umgang mit Sauerstoffinhalationstechniken zu erreichen und zur Gewohnheit zu verfestigen. Über Rehabilitationsindikationen, -ziele, -maßnahmen und -erfolge wird an dieser Stelle berichtet.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 352 (1980), S. 277-279 
    ISSN: 1435-2451
    Keywords: Tracheal stenosis ; Airway resistance ; Whole body plethysmography ; Flow volume curve. ; Trachealstenose ; Atemwegswiderstand ; Ganzkörperplethysmographie ; Flußvolumenkurve
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Lungenfunktionsanalytisch lassen sich Stenosen im Bereich der großen Atemwege (extra-, intrathorakale Trachealstenose, Haupt- und Zwischenbronchusstenose sowohl untereinander als auch gegen Erkrankungen mit generalisierter Atemwegsobstruktion (Asthma bronchiale, chronische Bronchitis, Lungenemphysem) abgrenzen. Der dafür am besten geeignete Meßparameter ist der ganzkörperplethysmographisch gemessene Atemwegswiderstand, der sich auch zur Bestimmung des Schweregrades der Stenose und als Verlaufspara meter eignet.
    Notes: Summary By means of pulmonary function tests we are not only able to differentiate the site of stenosis in the large airways, but also to separate these rare entities from the chronic obstructive lung disease. Airway resistance measured by whole body plethysmography is the most sensitive single parameter. It is also useful for assessment of the functional degree of the stenosis and for follow-up.
    Type of Medium: Electronic Resource
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