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  • 1990-1994  (3)
  • 27.60. +j  (1)
  • Mimosa spp.  (1)
  • depressedmyocardial contractility  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Left ventricular wall stress distribution in chronic pressure and volume overload: effect of normal and depressed contractility on regional stress-velocity relations (1990)
    Springer
    Basic research in cardiology 85 (1990), S. 367-383 
    Details
    ISSN: 1435-1803
    Keywords: left ventricular regionalwall stress ; stress-velocity relationship ; left ventricularhypertrophy ; depressedmyocardial contractility ; preload dependency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Regional stress-velocity relations were determined in a first group of patients (n=15) with normal (five controls, five patients with aortic stenosis, and five patients with aortic insufficiency) and a second group of patients (n=10) with depressed contractility (five patients with aortic stenosis and five with aortic insufficiency). LV circumferential wall stress was calculated from high-fidelity pressure and frame-by-frame angiocardiographic data using the Wong thick-wall model. Regional wall stress and shortening velocity were calculated from the endo-to the epicardium, and from the equator to the apex at 35 points. Regional LV wall stress was in all patients lower at the epi- than the endocardium, and lower at the apex than the equator. Regional stress-velocity relations were downward shifted from the endo- to the epicardium and from the equator to the apex (family of curves) in both groups. At corresponding LV regions stress-velocity relations showed significantly smaller slopes and intercepts (downward depression) in group 2 than in group 1. Thus, wall stress distribution is inhomogeneous in the normal, as well as in the pressure and volume overloaded left ventricle. Regional differences in stress-velocity relations within groups (family of curves) are probably related to changes in preload rather than to changes in regional contractility. Downward depression of the regional stress-velocity relations in group 2 is caused by depressed myocardial contractility.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01907129
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    High-spin isomeric state in144Pm (1993)
    Springer
    The European physical journal 345 (1993), S. 123-124 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.−k ; 27.60. +j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new high-spin isomeric state with a half-life of ≥2μs was found in144Pm by observing the14N(136Xe,6n)144Pm reactions. The excitation energy and spin of the isomer were estimated to be ∼7.4 MeV and ∼27+, respectively. Filling gas in a recoil ion separator was used as the target material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290348
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Natural 15N abundance in shrub and tree legumes, Casuarina, and non N2 fixing plants in Thailand (1990)
    Springer
    Plant and soil 128 (1990), S. 287-292 
    Details
    ISSN: 1573-5036
    Keywords: Aeschynomene spp. ; Casuarina spp. ; Mimosa spp. ; N2 fixation ; δ 15N ; Sesbania spp. ; tree legumes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The leaves and nodules from the shrub and tree legumes, particularly, Aeschynomene spp., Sesbania spp., Mimosa spp. and Leucaena spp., and Casuarina spp. and the leaves from neighbouring non-fixing plants were analyzed for their natural abundances of 15N (δ 15N). The δ 15N in the leaves of non-fixing plants was +5.9% on average, whereas those from shrub legumes and Casuarina spp. were lower and close to the values of atmospheric N2, suggesting the large contribution of N2 fixation as the N source in these plants. The δ 15N values of the leaves from tree legumes except for Leucaena spp. were between the shrub legumes and non-fixing plants, which suggests that the fractional contribution of fixed N2 in tree legumes may be smaller than that in the shrub legumes. Casuarina spp. was highly dependent on N2 fixation. The δ 15N values of the nodules from most of the shrub legumes investigated were higher than those of the leaves.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011121
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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