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  • 1980-1984  (6)
  • 1970-1974  (1)
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  • 1
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Mass-separated ion beams of the alkali elements Na, K, and Fr, and of the element Tl, were produced by bombarding a uranium target with 600 MeV protons, 890 MeV3He2 +, and 936 MeV12C4 +. Isotopic production yields are reported. In the case of the12C beam, these are thick target yields. Absolute cross-sections for the proton beam data were deduced by normalizing the delay-time corrected yield curves to measured cross-sections. For products farthest away from stability, the3He2 + beam generally gives the highest yields.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 296 (1980), S. 223-228 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Neutron-deficient francium isotopes were produced by proton-induced spallation reactions and investigated by alpha spectroscopy following on-line mass separation. The new isotopes201, 202Fr were identified and their half-lives measured. An improved value for the half-life of203Fr was obtained. Alpha branching ratios were determined for198m, g, 199At. The derivation of the mass excess of202Fr and the systematics of alpha energies and reduced widths are discussed.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Improved production yields of short-lived halogens were obtained from a ThO2 target, irradiated with 600 MeV protons, in combination with a negative surface ionization source. Mass-separated samples were studied by decay spectroscopy. Production yields of radioactive isotopes of chlorine, bromine, iodine and astatine are presented. Half-lives and relative neutron emission probabilities were measured for the heavy bromine isotopes89−92Br. Normalizing to earlier publishedP n values for89Br, the results are:89Br (4.30±0.14s,P n =13.6±0.8%),90Br (1.92±0.06s,P n =24.8±1.5%),91Br (0.53 ±0.03 s,P n =30.1 ±2.1%), and92Br (0.31 ±0.02 s,P n =34.6±2.5%). Energy spectra ofβ-delayed neutrons were measured.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract New excited states in the nucleus132Sn have been identified fromγγ coincidence measurements. Strong beta feeding to a state at 7,210 keV was established. This level is interpreted as a 6− state formed after aπg 9 2/−1 →vg 7 2/−1 GTβ − transition from the 7− ground state of132In. The deexcitation of the 7,210 keV state passes through a 4,351 keV state, providing support for a 3− assignment of this level.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of clinical monitoring and computing 1 (1984), S. 49-58 
    ISSN: 1573-2614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Medicine
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 10 (1981), S. 1115-1122 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Medical & biological engineering & computing 9 (1971), S. 431-445 
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire La pression du sang artériel et la proportion de pulsations du volume ont été mésurées expérimentalement comme fonctions de temps, pour un segment du bras humain. En utilisant ces courbes et un type de programme d'identification, commun dans les vérifications techniques, on a calculé un modèle mathématique pour l'arbre artériel inclu dans le segment. Ce modèle mathématique mena à la construction d'un circuit électrique analogue, pour simuler la dépendance du temps de la proportion de pulsations du volume sur la pression artérielle. Dans les deux cas les résultats montrent un accord étroit entre les courbes simulées et les courbes physiologiques déterminées expérimentalement. L'inertie du sang et des vaisseaux paraît être négligeable, tandis que les adaptations non-linéaires doivent être inclues quand on utilise des vastes rangées de pression.
    Abstract: Zusammenfassung Der Arterienblutdruck und die Geschwindigkeit des Volumenpulsierens wurden experimentell für ein Segment des menschlichen Arms als Funktionen der Zeit gemessen. Unter verwendung dieser Kurven und einer Art von Identifizierungsprogramm, das in der Regeltechnik üblich ist, wurde ein mathematisches Modell für den, in das Segment eingeschlossenen Arterienbaum berechnet. Dieses mathematische Modell führte zu dem Entwurf einer analogen elektrischen Schaltung zur Nachahmung der zeitlichen Abhängigkeit der Geschwindigkeit des Raumpulsierens von dem Arteriendruck. In beiden Fällen geben die Resultate eine naheliegende Übereinstimmung zwischen den nachgeahmten Kurven und den experimentell ermittelten, physiologischen Kurven. Es wird gezeigt, dass die Trägheit von Blut und Gefässen unbedeutend ist, während nicht-lineare Nachgiebigkeit berücksichtigt werden muss, wenn es sich um grosse Druckbereiche handelt.
    Notes: Abstract The arterial blood pressure and the rate of volume pulsations were measured experimentally as functions of time for a segment of the human arm. Using these curves and a type of identification program, common in control engineering, a mathematical model was calculated for the arterial tree included in the segment. This mathematical model led to the construction of an electrical analogue circuit for simulating the time-dependence of the rate of volume pulsations on the arterial pressure. In both cases the results show a close agreement between the simulated curves and the physiological curves determined experimentally. The inertia of blood and vessels is shown to be negligible, while non-linear compliances must be included when dealing with wide pressure ranges.
    Type of Medium: Electronic Resource
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