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  • 2005-2009  (2)
  • 2006  (2)
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  • 2005-2009  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Refine Yttria Powder and Fabrication of Transparent Yb,Cr:YAG Ceramics (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 15-17 (Feb. 2006), p. 246-250 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Commercial Y2O3 powders were subjected to high energy ball milling in a planetaryball mill using high purity alumina balls and vial. The refined Y2O3 power ,withcommercial high-purity Al2O3, Cr2O3 and Yb2O3 powders, were used as rawmaterials. Transparent ytterbium and chromium codoped yttrium aluminum garnet(Yb,Cr:YAG) ceramics were fabricated by a solid-state reaction method. TheYb,Cr:YAG ceramics exhibit a pore free structure and the average grain size is about10 micron. The strong absorptions at 940 and 968 nm of Yb3+ are suitable for InGaAsdiode laser pumping, and there is an absorption band at 1030 nm, which is suitable forpassive Q-switch laser output at 1030 nm. Transparent Yb,Cr:YAG ceramics may be apotential material for compact, efficient, high-stability diode-laser-pumped passiveQ-switched solid-state lasers
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.15-17.246.pdf
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Applying Hierarchical Clustering to Discover the Typical Process Route (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 949-952 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In order to discover the typical process route (TPR) in the Computer Aided ProcessPlanning (CAPP) database, Hierarchical Clustering algorithm is adopted. A mathematics modelbased on the data matrix was built to describe the process route (PR). On the base of the operationcode, the distance between operations, between the PRs, between clusters were measured toevaluate the PR similarity. Then, the PR clusters were eventually merged by the hierarchicalclustering algorithm. Three methods are listed to confirm the clustering granularity that determinesthe clustering result. This TPR discovery method is successfully applied to discover the axlesleeves’ TPR
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.949.pdf
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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