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  • 1995-1999  (2)
  • 68.35.Fx  (1)
  • EVAL mixture  (1)
  • 66.30
  • 1
    Electronic Resource
    Electronic Resource
    Thermally induced structural modification in Pt/C X-ray multilayer mirrors fabricated by electron beam evaporation (1996)
    Springer
    Applied physics 62 (1996), S. 29-32 
    Details
    ISSN: 1432-0630
    Keywords: 68.35.Fx ; 68.60.Dv ; 68.65. + g
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Platinum-carbon multilayer mirrors with a bilayer spacing of 50 Å were fabricated in an ultrahigh vacuum electron beam evaporator. The thermal stability of these multilayers was studied under vacuum annealing using X-ray reflectivity and X-ray diffraction. Up to 450°C, the bilayer spacing increases monotonically accompanied by a gradual increase in crystallite size and grain texture. At 500°C multilayer reflection vanishes, platinum crystallites grow abruptly, and there is a strong texture of platinum in the [220] -plane. Possible reasons for thermally induced structural modifications in these multilayers are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01568083
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Embolization of cerebral aneurysms with a liquid embolus, EVAL mixture: Report of three cases (1996)
    Springer
    Acta neurochirurgica 138 (1996), S. 294-300 
    Details
    ISSN: 0942-0940
    Keywords: Cerebral aneurysm ; endovascular surgery ; EVAL mixture ; liquid embolus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Embolization of three surgically difficult cerebral aneurysms was performed using our newly developed non-adhesive embolic material, EVAL mixture (ethylene vinyl alcohol copolymer). Conventional embolic materials such as detachable balloons or microcoils were not used because of a large or irregular aneurysmal neck. After temporary occlusion of the parent artery with a superselective balloon catheter, the EVAL mixture was slowly injected through a microcatheter placed in the aneurysm or parent artery. The locations of the aneurysms were anterior communicating artery, basilar artery-posterior cerebral artery and basilar artery-anterior inferior cerebellar artery (BA-AICA). One aneurysmal occlusion and 2 parent artery occlusions were performed. Patients had no persistent deficits. The patient with the BA-AICA aneurysm associated with an arteriovenous malformation died of rupture of the residual AVM due to haemodynamic change 2 weeks after embolization. In selected and limited cases, embolization of surgically difficult cerebral aneurysms using EVAL mixture was more effective and safer than embolization using conventional embolic materials such as balloons and microcoils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411740
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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