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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 29 (1974), S. 77-86 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 24 Patienten mit Polycythaemia vera wurden untersucht, und zwar die Funktion der Blutplättchen, die Blutkoagulation und die Fibrinolyse. Untersuchungen der Blutplättchen zeigten einen vermehrten Ausfall der roten Blutkörperchen in dem Gerinnungsretraktionstest, abnorme Ergebnisse der Plättchen-Adhäsivität und Defekte der Plättchenaggregation durch Adrenalin, ADP, Kollagen und Thrombin in abnehmender Häufigkeit in der Reihenfolge der Reagenzien. In einer kleinen Zahl der Fälle waren die ADP-Befreiung von den Plättchen und der Plättchen-Faktor-3-Labilitätstest abnorm, während die Blutungszeit in allen Fällen normal war. Die Untersuchung der Blutkoagulation zeigte geringe Abweichungen, und zwar waren die Screening-Tests in manchen Fällen leicht verlängert, die Durchschnittswerte des Faktors V und X und die Antithrombin-III-Aktivität waren vermindert, während die Werte des Faktors VIII sehr weit voneinander abwichen. Die Untersuchung der Fibrinolyse zeigte eine normale fibrinolytische Aktivität des Plasmas, aber das Plasminogen war leicht vermindert und die Fibrinogenspaltprodukte waren erhöht im Vergleich zu den normalen Fällen. Es wurde kein klarer Zusammenhang zwischen der Abnormalität der Thrombozyten, der Koagulation und der Fibrinolyse im Vergleich zu den Blutungserscheinungen festgestellt.
    Notes: Summary 24 patients with polycythaemia vera were studied as regards platelet function, blood coagulation and fibrinolysis. Platelet investigation showed increased red cell fall-out in the clot retraction test, abnormal results in the platelet adhesiveness and defective platelet aggregation with adrenalin, ADP, collagen and thrombin in frequency decreasing in that order. In a small number of cases the “ADP release” from platelets and the platelet factor-3 availability tests were abnormal while the bleeding time was normal in all cases. Blood coagulation study revealed various mild abnormalities, namely the screening tests in some cases were slightly prolonged, the mean values of factors V and X as well as the antithrombin-III activity were decreased while the factor-VIII level scattered widely. Fibrinolytic study showed normal plasma fibrinolytic activity but the plasminogen was slightly decreased and the fibrinogen/fibrin degradation products were elevated compared to normal. There was no clear correlation between abnormalities of platelets, coagulation or fibrinolysis tests and bleeding manifestations.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 612-617 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A feedback loop using an optoelectronic system has been tested successfully for the stabilization of the output energy at the fourth-harmonic frequency of a Nd-YAG laser (266 nm). The system presented includes an optical device to monitor the laser output energy at the nonconverted wavelengths and an electronic circuitry to optimize the laser output energy at the fourth-harmonic frequency. This optimization is achieved by the real-time correction of the frequency quadrupling laser crystal angle with respect to the input beam, using a stepping motor oscillating around the optimum crystal position. Results show that the present system provides a laser output energy stability better than ±15% for a long-term operation at the fourth-harmonic frequency, and keeps the locking even during the warming phase, immediately after the laser turning on. This system was designed for automatic LIDAR operations in field experiments, but its principle of operation can also be applied to any type of harmonic generator for either solid-state or dye laser.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 62 (1996), S. 357-365 
    ISSN: 1432-0649
    Keywords: 42.55 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The plasma electrode design concept is applied for the first time to an HF laser. The discharge along the surface of a dielectric (sliding discharge) is used as a plasma cathode for the main laser discharge. The laser operates at atmospheric pressure with a gas mixture of He/SF6/C3H8. Details are presented on the efficiency of energy transfer, the dependence of laser performance on circuit parameters, gas mixture, relative energy loading and time delay between the plasma electrode and main discharges. The F atom production rate is estimated from the linear dependence of the output energy on the electric charge passed through the discharge. Output energies of 600 mJ were obtained at 1.6% efficiency from a small active discharge of 108 cm3 volume and 38 cm length, while the maximum specific input and output energies were 370 J/1 and 5.7 J/1, respectively. These values compare favourably with those reported in the literature for non-chain-reaction-type gas mixtures at 1 atm pressure and demonstrate that the plasma electrode design is a powerful scheme for developing gas-discharge lasers.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Human genetics 〈Berlin〉 48 (1979), S. 109-111 
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 13 (1968), S. 952-958 
    ISSN: 1573-2568
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of injections of histamine on the absorption of radiocobalamin was studied by means of the Schilling test in 61 patients. Histamine significantly increased the absorption of Vitamin B12 from the gut. The effects of histamine and carbachol were compared in 31 subjects, and both substances were equally effective in increasing Vitamin B12 absorption. The results suggest that in addition to stimulating the secretion of I.F., histamine may increase the absorption of Vitamin B12 by another mechanism not mediated by this factor, such as a direct action on the small bowel.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 114 (1938), S. 310-319 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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