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  • Springer  (27)
  • Institute of Physics  (6)
  • American Institute of Physics (AIP)
  • 1980-1984  (21)
  • 1970-1974  (12)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Computing 5 (1970), S. 136-143 
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Es wird das Verhalten eines bereitstehenden übermäßig komplexen Systems mit zwei Arten von Komponenten unter unvollständiger Umschaltvorrichtung ausgewertet.Laplace-Transformationen von wechselnden und festen Zustandswahrscheinlichkeiten werden berechnet. Ein spezieller Fall wird behandelt und diskutiert.
    Notes: Summary The behaviour of a stand-by redundant complex system with two types of components has been evaluated under imperfect switching over device.Laplace transforms of various state probabilities and steady state probabilities have been calculated. A particular case has also been discussed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 100 (1984), S. 65-83 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Chisnell-Chester-Whitham method has been used to study the propagation of diverging hydromagnetic cylindrical shock through an infinitely electrically conducting self-gravitating gas having an initial density distribution ρ0=ρ′ r-w where ρ′ is the density at the axis of symmetry andw is a constant, simultaneously for the two cases, viz.: (i) when the shock is weak and (ii) when it is strong. The magnetic field is taken to be axial and initially of constant strength. Analytical relations for shock velocity and shock strength have been obtained. the expressions for the pressure, the density and the particle velocity immediately behind the shock have also been derived.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A search has been carried out for neutral charm production in 5,108 proton-emulsion interactions at 400 GeV/c. Nine charm candidates have been observed in our fiducial volume which extends from 100 μm-1,000 μm in the forward cone. One of these is a 4-prong and the others are 2-prong events with opening angle〉10 mrad and momenta of both decay tracks〉150 MeV/c. Search for associated charm decays was made in an extended fiducial volume around the primary stars of these nine candidates. This yielded two neutral 2-prong events, one associated with the 4-prong and the other with a 2-prong candidate. All unassociated candidates are consistent with being backgrounds due toK s , Λ decays, neutral interactions and γ conversions whereas the background to associated events is negligible. Based on the two associated decays the inclusive cross section forD 0, −0 production is determined as 27±20 μb/nucleon. Detailed measurements on the 4-prong candidate lead to the identification of one decay track as an electron and another as a kaon. This is interpreted as a semi-leptonic, Cabbibo favouredD 0/D −0 decay.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 40 (1984), S. 388-390 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The level of the acid hydrolases β-glucuronidase (EC 3.2.3.11), acid phosphatase (EC 3.1.3.2) and acid protease (EC 3.4.4) was studied during larval growth and molting inP. ricini. The level of activity of these enzymes remained low during larval growth; however, the level increased sharply at the time of molting and declined sharply thereafter in the newly ecdysed insect. Interestingly, the diminished activity of these enzymes was almost quantitatively recovered in the cast-off cuticle. The excretion of acid hydrolases through the cast-off cuticle has hitherto not been reported in insects during molting.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 29 (1973), S. 284-284 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es wird nachgewiesen, dass die Zeitspanne, die für die Extraktion von Acetylcholin gebraucht wird, auf seine quantitative Bestimmung entscheidend ist.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 33 (1984), S. 50-55 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Computing 6 (1970), S. 200-213 
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Untersucht wurde das Verhalten eines komplexen Systems, bestehend aus zwei Klassen von Komponenten,L 1 undL 2. Tritt ein Fehler in einer Komponente ausL 1 auf, so fällt das System aus, ein Fehler in einer Komponente ausL 2 vermindert die Leistungsfähigkeit des Systems. Für die Reparatur der ausgefallenen Komponenten wurden drei Fälle untersucht: 1. Die zuerst ausgefallene Komponente wird zuerst repariert. 2. Eine Reparatur einer Komponente der KlasseL 2 wird bei Auftreten eines Fehlers einer Komponente der KlasseL 1 unterbrochen. 3. Im Gegensatz zu 2. muß eine unterbrochene Reparatur wieder neu begonnen werden. Hergeleitet wurden dieLaplace-Transformationen der Wahrscheinlichkeiten, daß sich das System im normalen, gestörten bzw. ausgefallenen Zustand befindet, ferner Formeln, die das asymptotische Verhalten des Systems beschreiben.
    Notes: Summary The behaviour of a complex system, consisting of components forming two classesL 1 andL 2 where failure inL 1 brings about the complete breakdown of the system and that inL 2 causes the system to work in reduced efficiency state, has been investigated. The repair of failed components in these classes is carried out under three different repair disciplines, viz., head of line, preemptive resume and preemptive repeat.Laplace Transforms of the probabilities that the system is in normal-efficiency, reduced-efficiency and in down-state, have been obtained. Asymptotic solutions also have been derived.
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  • 8
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Untersucht wird das Verhalten eines Systems, das sich aus Komponenten dreier Typen zusammensetzt, wobei die Komponenten eines speziellen Typs sämtlich parallel liegen. Es wird ein mathematisches Modell entwickelt unter der Annahme exponentiell verteilter Fehlerabstände sowie — mit einer Ausnahme —beliebig verteilter Reparaturzeiten. DieLaplace-Transformationen verschiedener Zustandswahrscheinlichkeiten werden hergeleitet; schließlich werden zwei Spezialfälle gesondert diskutiert.
    Notes: Summary The behaviour of a parallel redundant complex system with three types of components has been investigated. Mathematical model has been developed for exponential failure and general repair time distributions in respect of components in all the three classes. TheLaplace transforms of the various state probabilities have been obtained. Two particular cases have also been discussed in the end.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 36 (1980), S. 1229-1230 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Triweekly i.m. injections of clomiphene citrate (group 1, 25 μg/0.5 ml and group II, 50 μg/1.0 ml) were administered for a period of 3 months during the preparatory period to female fresh water teleosts exhibiting ovarian recrudescence, while a control group received 0.5 ml of physiological saline throughout the period of experimentation i.e., from February through April. 50 μg clomiphene citrate treatment brought about a steady increase in ovarian size, and oocytes began to enlarge and mature and finally ovulation took place in April. This is 4 months ahead of their normal occurrence.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 26 (1970), S. 217-217 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Diskussion über die Frage der Ätiologic der Xanthinurie.
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