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  • 1
    Electronic Resource
    Electronic Resource
    N-Body Models (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 596 (1990), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1990.tb27417.x
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  • 2
    Electronic Resource
    Electronic Resource
    Galactic Oscillations (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 631 (1991), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1991.tb52630.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Longevity of Disks in Galaxies (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 675 (1992), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1992.tb56806.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Managed Care Plans: Characteristics, Growth, and Premium Performance (1994)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Public Health 15 (1994), S. 437-459 
    Details
    ISSN: 0163-7525
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.pu.15.050194.002253
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Galactic oscillations (1994)
    Springer
    Celestial mechanics and dynamical astronomy 59 (1994), S. 161-199 
    Details
    ISSN: 1572-9478
    Keywords: Galaxies: internal motions ; galaxies: structure ; galaxies: nuclei ; stars: stellar dynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A stable galaxy, if excited above its ground state, oscillates about that ground state. If it is reasonably robust, it can support oscillations of large amplitude. Normal mode oscillations, with surprisingly large amplitudes, have been seen in numerical experiments. Observational evidence shows that real galaxies also oscillate. Galaxies ring like a bell in the experiments, and ringing continues undamped long after initial transients have died out. Their total kinetic energy oscillates with an amplitude as large as 10% of the mean. A fundamental mode dominates. It is an homologous expansion/contraction of the entire galaxy (no nodes). Inward or outward velocities due to this mode are sufficiently large in the outer reaches of a galaxy to account for kinematic warps in observed velocity fields. A second spherically symmetrical mode has one node and is important near the center of the galaxy. It may be the driving force behind bulges in spiral galaxies. Two other normal modes have been identified as well. This appears to be the first experimental demonstration of normal mode oscillations within stable galaxy models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692131
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  • 6
    Electronic Resource
    Electronic Resource
    Neovascularization occurs in response to crush lesions of adult frog optic nerves (1990)
    Springer
    Journal of neurocytology 19 (1990), S. 224-234 
    Details
    ISSN: 1573-7381
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The capacity of the adult frog optic nerve to regenerate following a crush lesion is well established and is in contrast to the lack of regeneration of mammalian optic nerves after similar lesions. One factor which may contribute to the enhanced regenerative capacity of amphibian optic nerves is the rapid removal of cellular debris from the nerve after injury. In this study the morphology of normal and crushed frog optic nerves has been compared. Although the intraorbital region of the normal adult frog optic nerve is avascular, new intraparenchymal blood vessels appear central to the crush site 24 h after the nerve lesion. The appearance of these blood vessels is coincident with the appearance of granulocytes and macrophages in the nerve. Successful regeneration of the adult frog optic nerve may depend on this neovascularization to facilitate the rapid removal of cellular debris and to supply regenerating axons with trophic substances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01217300
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  • 7
    Electronic Resource
    Electronic Resource
    Altered phosphorylation state of branched-chain 2-Oxo acid dehydrogenase in a branched-chain acyltransferase deficient human fibroblast cell line (1991)
    Springer
    Journal of inherited metabolic disease 14 (1991), S. 37-44 
    Details
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The abundance and phosphorylation state of the polypeptide constitutents of the human branched-chain 2-oxo acid dehydrogenase complex were examined in mitochondria from normal and maple syrup urine disease (MSUD) fibroblasts. In normal fibroblast mitochondria two forms of the E1α subunit were observed: non-phosphorylated (E1α) and phosphorylated (E1α−P). About 40–50% of E1α was present as E1α−P. The ability to quantitate the two forms of E1α permitted examination of the association between decreased capacity to oxidize branched-chain 2-oxo acids and the phosphorylation state of E1α. Changes in phosphorylation state of E1α were observed in MSUD fibroblasts as compared to control cells. Of particular interest was the absence of E1α−P in an MSUD fibroblast line which lacked the dihydrolipoyl acyltransferase (E2) subunit of the dehydrogenase complex. In two MSUD cell lines deficient in E1α, the abundance of E1α−P appeared to be preferentially reduced. A fourth MSUD cell line contained normal quantities of E3, E2 and both forms of the E1α polypeptide. Our results indicate that alterations in the abundance of dehydrogenase complex polypeptides in MSUD fibroblasts may influence the phosphorylation state of the E1α polypeptide. They demonstrate the potential for examining simultaneously mutations which affect both the catalytic and regulatory components of the dehydrogenase complex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01804386
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