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  • 1990-1994  (3)
  • Japanese encephalitis  (1)
  • Panicum maximum  (1)
  • left ventricular regionalwall stress  (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
    A follow-up study by CT and MRI in 3 cases of Japanese encephalitis (1990)
    Springer
    Neuroradiology 32 (1990), S. 215-219 
    Details
    ISSN: 1432-1920
    Keywords: Japanese encephalitis ; Sequelae ; X-ray computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A follow-up study by CT and MRI in 3 cases of Japanese encephalitis (JE) was performed. Neurologically dementia, forced laughing, tetraplegia and parkinsonism were observed as sequelae. In the CT and MR scans about 3 years after the onset of JE, low-density areas (LDAs) or abnormal signal intensities had remained in the thalamus and basal ganglia. The abnormalities were also found in the brain stem. When the main lesions shown by CT and MRI were compared with those of the acute stage, T2-weighted MRI clearly revealed multiple small areas with high signal intensities, although those in the acute stage had shown diffuse abnormal signals. These findings may be useful in helping to identify JE a long time after the onset.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00589115
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Natural abundance of 15N in tropical plants with emphasis on tree legumes (1993)
    Springer
    Plant and soil 153 (1993), S. 295-304 
    Details
    ISSN: 1573-5036
    Keywords: natural 15N abundance ; N2 fixation ; Panicum maximum ; tree legumes ; tropical ecosystem
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Natural abundance of 15N (δ 15N) of leaves harvested from tropical plants in Brazil and Thailand was analyzed. The δ 15N values of non-N2-fixing trees in Brazil were +4.5±1.9‰, which is lower than those of soil nitrogen (+8.0±2.2‰). In contrast, mimosa and kudzu had very low δ 15N values (−1.4≈+0.5‰). The δ 15N values of Panicum maximum and leguminous trees, except Leucaena leucocephala, were similar to those of non-N2-fixing trees, suggesting that the contribution of fixed N in these plants is negligible. The δ 15N values of non-N2-fixing trees in Thailand were +4.9±2.0‰. Leucaena leucocephala, Sesbania grandiflora, Casuarina spp. and Cycas spp. had low δ 15N values, close to the value of atmospheric N2 (0‰), pointing to a major contribution of N2 fixation in these plants. Cassia spp. and Tamarindus indica had high δ 15N values, which confirms that these species are non-nodulating legumes. The δ 15N values of Acacia spp. and Gliricidia sepium and other potentially nodulating tree legumes were, on average, slightly lower than those of non-N2-fixing trees, indicating a small contribution of N2 fixation in these legumes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00013003
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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