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  • 1
    Electronic Resource
    Electronic Resource
    A model of Pt-Rh catalyst prepared by electro-chemical deposition of Rh ions on Pt(100) surface (1994)
    Springer
    Topics in catalysis 1 (1994), S. 95-102 
    Details
    ISSN: 1572-9028
    Keywords: Electro-catalysis ; metal deposition ; alloys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract When Pt-Rh(100) alloy surface was exposed to NO or O2 at temperatures higher than 400 K, a characteristic p(3 × 1) LEED pattern appeared with segregation of Rh atoms on the surface. It was shown that when a Rh-deposited Pt(100) surface is heated in NO or O2 the same 5 × 10−8 Torr of H2 at room temperature, the p(3 × 1) pattern disappears but is readily recovered 5 × 10−8 Torr of H2 at room temperature, the p(3 × 1) pattern disappears but is readily recovered by exposing to O2 of 1 × 10−7 Torr at room temperature. The growth of a Rh-O overlayer on Pt layer is responsible for the formation of the p(3 × 1) structure on either the Pt-Rh(100) alloy or Pt(100) surface, and this peculiar surface may correspond to the active surface of the Pt-Rh catalyst for NO x reduction
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01379579
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  • 2
    Electronic Resource
    Electronic Resource
    The Eiken Latex test for detection of a cryptococcal antigen in cryptococcosis (1994)
    Springer
    Mycopathologia 127 (1994), S. 131-134 
    Details
    ISSN: 1573-0832
    Keywords: Cryptococcal antigen ; Eiken Latex ; Latex agglutination test ; Murine disseminated cryptococcosis ; Pastorex® Cryptococcus ; Pulmonary cryptococcosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A latex agglutination test for cryptococcal antigen, the Eiken Latex test (Eiken, Tokyo, Japan), was compared with a monoclonal antibody-based agglutination assay, Pastorex® Cryptococcus (Diagnostics Pasteur, Marneur-la-Coquette, France). In a murine model of disseminated cryptococcosis, the kinetics of the antigen titers by the Eiken Latex were similar to those by the Pastorex® Cryptococcus, but sensitivity was much higher. In HIV-negative patients with pulmonary cryptococcosis, a cryptococcal antigen was detected in 6 of 10 patients by the Eiken Latex test and in only 3 of those patients by the Pastorex® Cryptococcus. The results indicate that the Eiken Latex is more sensitive for the detection of the cryptococcal antigen, even in non-disseminated cryptococcosis. The sensitivity and specificity of the Eiken Latex were examined using 195 sera from 25 patients with pulmonary cryptococcosis and 170 patients with non-cryptococcosis. The cutoff value of ≥ 1:8 showed a sensitivity of 76% (19/25) and a specificity of 98.9% (168/170).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01102911
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    Paper (German National Licenses)
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