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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 35 (1977), S. 387-394 
    ISSN: 1432-0584
    Keywords: Thrombocyte transfusion ; Continuous flow blood separation ; Thrombocyte separation ; Donor response ; Thrombopoietin in healthy men ; Thrombozytentransfusion ; Zellseparator-Techniken ; Thrombozyten-Separation ; Spender-Bedingungen ; Thrombopoetin bei Gesunden
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Entnahme von rund 75% der im zirkulierenden Blut und im Thrombozyten-Pool des Spenders vorhandenen Thrombozyten durch kontinuierliche Thrombopherese führt zu einer Senkung der mittleren Thrombozyten-Konzentration im Spenderblut auf 140±28×103/μl. Auch unter optimalen Separationsbedingungen bleibt die Thrombozyten-Konzentration in der reinfundierten Erythrozytenzone konstant um 88×103/μl, so daß eine Gefährdung des Spenders durch eine Thrombozytopenie ausgeschlossen ist. Der passagere Thrombozytenanstieg nach der Spende, dessen Höhe von der separierten Thrombozytenmenge abhängt, erreichte nur Werte um 277×103/μl. Da die Gesamtausbeute um 30% über der rechnerisch ermittelten Thrombozyten-Konzentration im separierten Spenderblut-Volumen lag, muß dieser Anteil aus dem Thrombozyten-Pool stammen. 12 und 24 Stunden nach der Thrombopherese ließ sich im Spenderplasma Thrombopoetin-Aktivität nachweisen.
    Notes: Summary The separation of approximately 75 per cent of the platelets present in circulation and thrombocyte pool in healthy adult donors by continuous flow centrifugation lowers the mean thrombocyte concentration to 140±28× 103/μl. A dangerous thrombocytopenia can not occur since the platelet count in the reinfused erythrocyte zone remains at around 88×103/μl. The reactive rise of the platelet count after separation, the extend of which depended on the total amount of harvested thrombocytes, reached values around 277×103/μl. The total thrombocyte yield exceeded the calculated yield by 30%, indicating emptying of a quiescent thrombocyte pool. Thrombopoietin activity could be demonstrated in donors' plasma at 12 and 24 hours after thrombophoresis.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 288 (1978), S. 125-131 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Multiple scattering and energy loss of 1.2 MeV/u Ar, Kr, Xe and U ions have been measured in C, Al, Ag, Au and Bi targets of different thicknesses. The experimental half-widths of the angular distributions of multiple scattering agree within 15 per cent with the theory of Meyer, and of Sigmund and Winterbon. The experimental stopping powers are compared with semi-empirical values of Braune and Schwalm, and of Northcliffe and Schilling, agreement is noted within 15 and 20 per cent, respectively.
    Type of Medium: Electronic Resource
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