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  • 1
    Electronic Resource
    Electronic Resource
    Light-intensity dependence in photocatalytic decomposition of water over K4Nb6O17 catalyst (1994)
    Springer
    Catalysis letters 28 (1994), S. 417-422 
    Details
    ISSN: 1572-879X
    Keywords: photocatalysis ; water decomposition ; light-intensity dependence ; K4Nb6O17
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract We have measured, for the first time, the light-intensity dependence in photocatalytic decomposition of water over K4Nb6O17 In higher light-intensity region, the rate of reaction is proportional to the square root of the light intensity. In lower light-intensity region, on the contrary, the rate is almost linearly proportional to the light intensity. We propose a reaction model whose main path of the reaction loss is the recombination of the charges generated under b and -gap radiation. This model describes the light-intensity dependence of this reaction well.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00806072
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Duplicate origin of the vertebral artery: report of two cases (1987)
    Springer
    Neuroradiology 29 (1987), S. 301-303 
    Details
    ISSN: 1432-1920
    Keywords: Vertebral artery ; Duplicate origin ; Inhibitory malformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report two cases showing duplicate origin of the vertebral artery; one with fenestaration of the distal portion of the left vertebral artery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00451774
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Traumatic arteriovenous fistula treated by superselective embolisation with microcoils: case report (1995)
    Springer
    Neuroradiology 37 (1995), S. 65-67 
    Details
    ISSN: 1432-1920
    Keywords: Head injury ; Dural arteriovenous fistula ; Embolisation Microcoil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 27-year-old man with a traumatic direct dural arteriovenous fistula (DAVF) was treated using embolisation microcoils. He had suffered blunt trauma to the head while drunk and was aware of no neurological deficit. A few days after the accident, however, he noticed a bruit in the right temple. Angiography demonstrated a direct DAVF fed by the right middle meningeal artery and draining into a right temporal dural vein and the ipsilateral cavernous sinus. A Tracker-18 catheter was passed without difficulty through the fistula and the draining vein was then embolised from distal to proximal with microcoils, and finally the fistula was occluded with microcoils, resulting in total obliteration of the fistula. Immediately after the embolisation, the patient could no longer hear the bruit. Thus, when a microcatheter can be introduced into the draining vein, microcoils can be used as emboli in the treatment of direct DAVF.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588523
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    Paper (German National Licenses)
    Fulltext
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