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  • Measurement  (1)
  • PACS: 13.30.-a Decays of baryons – 13.75.Ev Hyperon-nucleon interaction – 21.80 Hypernuclei – 25.80.Pw Hyperon-induced reactions  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    On the ΔI= 1/2 rule in the ΛN→NN reaction (1999)
    Springer
    The European physical journal 5 (1999), S. 127-129 
    Details
    ISSN: 1434-601X
    Keywords: PACS: 13.30.-a Decays of baryons – 13.75.Ev Hyperon-nucleon interaction – 21.80 Hypernuclei – 25.80.Pw Hyperon-induced reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: It is shown that the mass dependence of the Λ-lifetime in heavy hypernuclei is sensitive to the ratio of neutron-induced to proton-induced non-mesonic decay rates R n/R p. A comparison of the experimental mass dependence of the lifetimes with the calculated ones for different values of R n/R p leads to the conclusion that this ratio is larger than 2 on the confidence level of 0.75. This suggests that the phenomenological ΔI= 1/2 rule might be violated for the nonmesonic decay of the Λ-hyperon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050267
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Digital tachometer (1979)
    Springer
    Medical & biological engineering & computing 17 (1979), S. 547-549 
    Details
    ISSN: 1741-0444
    Keywords: Heartrate ; Measurement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Conclusion A simple digital tachometer has been constructed with standard t.t.l. integrate circuits. The circuit needs no calibration and its accuracy is sufficient for heartrate measurements. The mean heartrate value for four periods was used. This approach eliminates rapid changes of the value caused by respiration, and yet provides a stable value during surgical operations when strong electro-magnetic interferences make the e.c.g. signal temporarily not suitable for processing. The circuit measures the frequency in the range 15–250 impulses/min with an accuracy of ±2 impulses/min for 15–119 impulses/min, ±3 impulses/min for 120–199 impulses/min and ±5 impulses/min for 200–250 impulses/min. The tachometer can also be used for frequency measurements of other signals, e.g. respiration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02447073
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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