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  • 1
    Electronic Resource
    Electronic Resource
    T=1, spin-dipole strength in40Ca (1989)
    Springer
    The European physical journal 333 (1989), S. 39-43 
    Details
    ISSN: 1434-601X
    Keywords: 24.30 ; 24.30.CZ ; 25.40.Ep
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Spin-dipole strength in40Ca has been studied by inelastic scattering of 500-MeV protons and the dipole response in40Ca is compared with the spin-dipole data from the40Ca(p, n) reaction and nonspin-dipole data from photonuclear studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290108
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Adaptations to a terrestrial existence by the robber crab, Birgus latro L. (1990)
    Springer
    Journal of comparative physiology 160 (1990), S. 217-221 
    Details
    ISSN: 1432-136X
    Keywords: Birgus ; Land crabs ; Carbon dioxide ; Carbonic anhydrase ; Gills ; Lungs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The activity of carbonic anhydrase (CA), which catalyses the equilibrium CO2⇋H++HCO 3 - , was investigated in various tissues implicated in the excretion of CO2 by Birgus latro. Carbonic anhydrase was detected in the water-soluble fraction of gill tissue but also occurred in association with lipids (membrane bound). This is consistent with a CO2 excretory role and an ion regulation function for the gills. In the lungs (branchial chamber lining) CA activity was found in the membrane bound fraction but was not detected in the soluble fraction, suggesting that the lung CA is not important for ion regulation. The specific CA activity of gill tissue homogenate (A=1.8±0.7·mg-1) was higher than that measured for lung homogenates (A=0.4±0.2·mg-1), but when the whole organ was considered the total CA activity in the lungs was not significantly different from total CA activity in the gills. In comparison to aquatic and amphibious crustaceans the specific activity of carbonic anhydrase in the lungs was high (∼25% cf. gill activity). This CA activity in the lungs could be correlated with significant CO2 excretion by the lungs. CA may be retained in the branchial tissue as an adjunct to ion reabsorption by the gills.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00300957
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  • 3
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    Further morphological studies of QSOs (1982)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Results are presented of optical mapping of 29 QSOs, together with results of VLA observations of 16 of the optically observed objects. Principal results are that QSOs to z = 0.45 have extended nebulosity, the average ratio of nuclear to fuzz luminosity, corrected for resolution, is about 0.5, some 8 times higher than Seyfert I values, the average fuzz luminosity is -21.5, fainter than giant ellipticals, and fuzz morphology does not resemble E or S galaxies, but is very similar to Seyfert I's to similar luminosity limits. In some cases, indications of spiral structure are seen, and a large fraction of asymmetrical morphology is noted. In the QSO 0241 + 622, steep spectrum radio emission is found displaced from the central source exactly along the minor optical axis.
    Keywords: ASTRONOMY
    Type: Astrophysical Journal; vol. 262
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    HST imaging of quasi-stellar objects with WFPC2 (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Early images were taken with the optically corrected WFPC2 camera of the Hubble Space Telescope of the low-redshift quasars(QSOs) 1229+204 and 2141+175, which are radio-quiet and radio-loud, respectively. We discuss image restoration on the data. The objects were chosen on the basis of structure seen with 0.5 sec resolution with the Canada-France-Hawaii-Telescope (CFHT) high-resolution camera (HRCAM). 1229+204 was known to be a barred spiral with an asymmetrical extra blue feature: this is now resolved into a ring of knots which are probably young stellar populations in the tidal debris of a small gas-rich companion. There are also shell-like structures along the bar. 2141+175 has a faint smooth curved tidal arm without knots which extends on both sides of a compact elliptical-shaped central galaxy. There is also a short jetlike feature emerging from the nucleus. We discuss the properties and implications of these morphological details.
    Keywords: ASTRONOMY
    Type: The Astrophysical Journal (ISSN 0004-637X); 429; 1 pt; p. L1-L4
    Format: text
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    NASA TECHNICAL REPORTS
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