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  • 1985-1989  (3)
  • 1989  (3)
  • 1
    ISSN: 1572-879X
    Keywords: Titanium oxide modified platinum ; X-ray photoemission from platinum and titanium oxide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The effect of high temperature reduction in hydrogen was studied by angle resolved XPS in a system formed of platinum deposited on the (100) surface of a TiO2 single crystal sample. The analysis of the variation of the Pt/Ti XPS signal ratio as a function of the electron collection angle showed that partially reduced titanium oxide is present on the Pt film after the reduction treatment. The amount of oxide on the Pt surface is of the order of one monolayer equivalent.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Current microbiology 18 (1989), S. 201-206 
    ISSN: 1432-0991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The nameKlebsiella ornithinolytica sp. nov. is proposed for a group ofKlebsiella strains referred to previously as NIH Group 12 at the National Institute of Health, Tokyo. The members of this species are Gram-negative, encapsulated, nonmotile rods with the general characteristics of the familyEnterobacteriaceae and of the genusKlebsiella. They give positive results in tests for indole production, Voges-Proskauer, citrate utilization, lysine and ornithine decarboxylases, urease, β-galactosidase, malonate utilization, growth in KCN, and esculin hydrolysis, and they produce acid and gas fromd-glucose, and acid froml-arabinose, cellobiose, lactose, melibiose, raffinose, rhamnose, sucrose, trehalose,d-xylose, adonitol,d-arabitol, myo-inositol, sorbitol, arbutin, salicin, α-methyl-d-glucoside, and mucate. They give negative drolysis, DNase, pectinase, and acid production fromd-arabinose, melezitose, and dulcitol. They can grow at 4°C and 42°C, and do not produce any pigment. DNA relatedness of eight strains ofKlebsiella ornithinolytica to three strains including the type strain of this species averaged 88% in reaction at 75°C. DNA relatedness to the already recognizedKlebsiella species inEnterobacteriaceae was 1 to 20%. Phenotypic and DNA relatedness data also indicated that a group of organisms referred to as Enteric Group 47 orKlebsiella Group 47 at the Centers for Disease Control (Atlanta, Georgia) was identical withK. ornithinolytica. The type strain ofK. ornithinolytica is NIH 90-72 (JCM 6096).
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A simple and highly sensitive spectrophotometric determination of iron with pyrogallolphthalein in a micellar medium of non-ionic surfactant is proposed. This method is based on the kinetic-catalytic action of iron(III) upon the decomposition reaction between pyrogallolphthalein and potassium perdisulphate at pH 2.4–2.9 in the presence of Triton X 100 as a non-ionic surfactant. The calibration graph is linear over the range 10–600 ng iron(III) per 10 ml in spectrophotometry (apparent molar absorption coefficient for decomposition was 1.25×10−6 l per mole per cm at 385 nm). The method was applied to assay and recovery tests for artificial waste water with satisfactory results (recovery 97.6%–103.5%).
    Type of Medium: Electronic Resource
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