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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 6088-6093 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We discuss defects created by focused Ga ion beam implantation in GaAs or AlGaAs/GaAs heterostructures using deep level transient spectroscopy (DLTS). A novel contact configuration which is sensitive to defects located at the boundary between implanted and unperturbed regions at a well-defined depth is presented. The DLTS spectra for these samples are dominated by a peak with an activation energy of Ea=0.38 eV. The results show that this peak is associated with implantation-induced damage independent of the ion species. The defect is also found in a sample with Schottky contacts on top of a Ga-implanted GaAs layer.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 143-147 (Oct. 1993), p. 873-878 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 143-147 (Oct. 1993), p. 1571-1576 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1459
    Keywords: Neuropathy ; Chronic obstructive pulmonary disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The prevalence of clinical and electrophysiological signs of peripheral nerve disease was evaluated in 151 patients with chronic obstructive pulmonary disease. Patients with concomitant disorders affecting the peripheral nervous system were excluded. Thirty patients had clinical signs of a mild sensorimotor and distal neuropathy and 13 additional patients had only electrophysiological abnormalities. The rate and the severity of the neuropathy correlated with the severity of chronic hypoxaemia. Three out of 20 patients with mild hypoxaemia (PaO2 less than 15 mm Hg below normal) had polyneuropathy as compared with 15 out of 36 with severe hypoxaemia (PaO2 more than 30 mm Hg below normal (rates different at the 10% level)). PaO2 and age were the only variables discriminating between patients with and without peripheral neuropathy.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1434-3932
    Keywords: Schlüsselwörter HIT Typ II ; Heparin-induzierte Thrombozytopenie ; White-clot-Syndrom ; Danaparoid ; Rekombinantes Hirudin ; Key words HIT type II ; Heparin-induced Thrombocyopenia ; White clot Syndrome ; Danaparoid ; Hirudin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract  The case of a 71-year-old patient is discussed in whom early occlusions of an implanted bypass and peripheral arteries developed after implantation of a femoropopliteal PTFE bypass and several reoperations. Heparin-induced thrombocytopenia (HIT) type II was suspected because of the intraoperative aspect of white clots and when platelet counts fell below 50% of initial levels. A platelet aggregation test confirmed the diagnosis. After discontinuing the heparin therapy and using danaparoid, the platelet count continued to fall, so cross-reactivity to this heparinoid was assumed and confirmed in a second laboratory test. We switched to an anticoagulation regimen with phenprocoumon and used hirudin for the perioperative prophylaxis when another reoperation was required. Problems confirming the diagnosis of HIT type II and difficulties in patients with cross-reactivity to other heparinoids are discussed.
    Notes: Zusammenfassung  Es wird über den Verlauf bei einer 71jährigen Patientin berichtet, bei der es nach Anlage eines femoropoplitealen Bypasses sowie mehrfachen Revisions-operationen zu frühen Bypassverschlüssen und peripheren Gefäßokklusionen kam. Ein zusätzli- cher Abfall der Thrombozytenwerte unter 50% der Ausgangswerte in Zusammenhang mit dem intraoperativem Befund ”weißer Thromben” lenkte den Verdacht auf’ein White-clot-Syndrom bei Heparin-induzierter Thrombozytopenie Typ II, welche sich im Heparin-induzierten Plättchenaggregationstest (HIPA) bestätigte. Nach Umsetzen der Heparin-Therapie auf Danaparoid-Na (Orgaran) kam es zu einem weiteren Abfall derThrombozyten. Der klini-sche Verdacht auf Kreuzreaktivität zu Danaparoid-Na wurde im HIPA-Test verifiziert. Im weiterem Verlauf erfolgte zunächst die Antikoagula- tion mit Phenprocoumon (Marcumar) und dann im Rahmen eines Revisionseingriffs mit rekombinantem Hirudin (Refludan, Fa. Hoechst). Die Probleme bezüglich rechtzeitiger Diagnosestellung und antikoagu-lativer Therapie bei Kreuzreaktivität mit Orgaran werden diskutiert.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 54 (1921), S. 363-378 
    ISSN: 0365-9631
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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