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  • Arabinogalactan-protein  (1)
  • Biological hydroquinone  (1)
  • Fe-18Cr-9Ni  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Kinetic study of free-radical-scavenging action of biological hydroquinones (reduced forms of ubiquinone, vitamin K and tocopherol quinone) in solution
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 1157 (1993), S. 313-317 
    Details
    ISSN: 0304-4165
    Keywords: Antioxidant activity ; Biological hydroquinone ; Reaction rate ; Stopped-flow
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0304-4165(93)90115-O
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Production and characterization of antibodies to the β-(1→6)-galactotetraosyl group and their interaction with arabinogalactan-proteins (1993)
    Springer
    Planta 190 (1993), S. 525-535 
    Details
    ISSN: 1432-2048
    Keywords: Arabinogalactan-protein ; Immunolocalization ; Plasma membrane ; Protoplast surface ; Raphanus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rabbit antisera were raised against β-(1→6)-galactotetraose coupled to bovine serum albumin (Gal4-BSA). The antisera reacted with arabinogalactan-proteins (AGPs) isolated from seeds, roots, or leaves of radish (Raphanus sativus L.) as revealed by immunodiffusion analysis. Extensive removal of α-l-arabinofuranosyl residues from these AGPs enhanced the formation of precipitin with the antisera. The antisera did not react with such other polysaccharides as soybean arabinan-4-galactan, β-(1→4)-galactan, and β-(1→3)-galactan, indicating their high specificity toward the consecutive β-(1→6)-galactosyl side chains of AGPs. The antibodies were purified by affinity chromatography on a column of immobilized β-(1→6)-galactotetraose as ligand. The specificity of the antibodies toward consecutive (1→6)-linked β-galactosyl residues was confirmed by enzyme-linked immunosorbent assay for hapten inhibition against Gal4-BSA as antigen, which revealed that β-(1→6)-galactotriose and-tetraose were potent inhibitors, while β-(1→3)-or β-(1→4)-galactobioses and -trioses were essentially unreactive. Electron-microscopic observation of immunogold-stained tissues demonstrated that AGPs were localized in the middle lamella as well as at the plasma membrane of primary roots of radish. Agglutination of protoplasts prepared from cotyledons occurred with the antibodies, supporting the evidence for localization of AGPs in the plasma membrane. The antibody-mediated agglutination was inhibited by addition of AGPs or β-(1→6)-galactotetraose.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224792
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Plasma nitriding of Fe-18Cr-9Ni in the range of 723–823 K (1991)
    Springer
    Oxidation of metals 36 (1991), S. 143-156 
    Details
    ISSN: 1573-4889
    Keywords: plasma nitriding ; Fe-18Cr-9Ni ; CrN precipitates ; nitrogen diffusion ; kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract To clarify the mechanism of plasma nitriding, we examined the optical microstructure, the hardness, the precipitation, and the concentration of dissolved nitrogen in Fe-18Cr-9Ni nitrided using plasma in the range of 723–823 K. Compared with ammonia-gas nitriding, the features of plasma nitriding are the formation of small chromium-nitride precipitates (CrN), the absence of an externally nitrided layer, the high concentration of dissolved nitrogen, and the high hardness (HV=1200). The diffusion coefficient of nitrogen in the present alloy was determined using the growth rate of the internally nitrided layer, based on calculations used in internal oxidation. Plasma- and gas-nitriding were also compared with respect to the growth rate of the nitrided layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00938459
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    Paper (German National Licenses)
    Fulltext
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