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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
    Systematic characterization of curved DNA segments randomly cloned from Escherichia coli and their functional significance (1991)
    Springer
    Molecular genetics and genomics 226 (1991), S. 367-376 
    Details
    ISSN: 1617-4623
    Keywords: Curved DNA ; Protein H-NS (or Hla) ; E. coli chromosome ; Regulation of transcription
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In addition to the set of curved DNA segments isolated previously from Escherichia coli, another set of curved DNA segments has now been isolated. To gain an insight into the functional significance of these curved DNA sequences, systematic analyses were carried out, which included not only mapping of the precise locations of the segments on the E. coli chromosome but also clarification of the gene organization in the chromosomal regions surrounding the curved DNA sequences. It was demonstrated that most of the curved DNA sequences, which have been characterized so far, appear to be located immediately upstream of the coding sequences of adjacent genes. It was also demonstrated that an E. coli histone-like protein, named H-NS (or H1a), exhibits a strong affinity for naturally occurring curved DNA sequences in regions upstream promoters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00260648
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  • 3
    Electronic Resource
    Electronic Resource
    Molecular analysis of the Escherichia coli has gene encoding a DNA-binding protein, which preferentially recognizes curved DNA sequences (1991)
    Springer
    Molecular genetics and genomics 230 (1991), S. 332-336 
    Details
    ISSN: 1617-4623
    Keywords: Curved DNA-Protein H-NS (or H1a) ; E. coli chromosome ; Regulation of transcription
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We previously demonstrated that the E. coli protein, H-NS (or Hla), encoded by the gene hns (or osmZ or bglY preferentially recognizes curved DNA sequences in vitro. In order to gain further insight into the complex function of H-NS and the significance of DNA curvature, we constructed a structurally defined hns deletion mutant on the E. coli chromosome. The hns deletion mutant thus obtained showed a variety of phenotypes previously for other lesions in hns. It was further demonstrated that, in this hns deletion background, numerous E. coli cellular proteins were either strongly expressed or remarkably repressed, as compared to their expression levels in wild-type cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00290685
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