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  • Parartemia  (2)
  • Polymer and Materials Science  (1)
  • ENGINEERING (GENERAL)
  • 1995-1999  (3)
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Keywords
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Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Divergence of Parartemia and Artemia haemoglobin genes (1998)
    Springer
    International journal of salt lake research 7 (1998), S. 171-180 
    Details
    ISSN: 1573-8590
    Keywords: Artemia ; divergence ; DNA ; haemoglobin ; Parartemia ; protein sequence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract Parartemia is a genus of brine shrimp endemic to Australia which is related to the more widespread and economically important Artemia sp. The expression of a multimeric haemoglobin molecule in Artemia is well documented but in Parartemia only trace levels of a possible haemoglobin have been observed. In this paper we describe the DNA sequence of a domain of a haemoglobin molecule in Parartemia. The derived amino acid sequence suggests that the possible date of divergence about 85 million years ago of the two genera predates the divergence of the C and T polymers of Artemia haemoglobin. This date would correlate with the physical and temporal isolation of Australia in the late Mesozoic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009068203811
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Divergence ofParartemia andArtemia haemoglobin genes (1998)
    Springer
    International journal of salt lake research 7 (1998), S. 171-180 
    Details
    ISSN: 1573-8590
    Keywords: Artemia ; divergence ; DNA ; haemoglobin ; Parartemia ; protein sequence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract Parartemia is a genus of brine shrimp endemic to Australia which is related to the more widespread and economically importantArtemia sp. The expression of a multimeric haemoglobin molecule inArtemia is well documented but inParartemia only trace levels of a possible haemoglobin have been observed. In this paper we describe the DNA sequence of a domain of a haemoglobin molecule inParartemia. The derived amino acid sequence suggests that the possible date of divergence about 85 million years ago of the two genera predates the divergence of the C and T polymers ofArtemia haemoglobin. This date would correlate with the physical and temporal isolation of Australia in the late Mesozoic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02441885
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Ion implant-induced change in polyimide films monitored by variable energy positron annihilation spectroscopy (1998)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 36 (1998), S. 2413-2421 
    Details
    ISSN: 0887-6266
    Keywords: positron annihilation ; polyimide ; ion implantation ; membrane ; permeability ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: 6FDA-pMDA polyimide membranes were implanted with 140 keV N+ ions to fluences between 2 × 1014 and 5 × 1015 cm-2. Variable energy positron annihilation spectra were taken and spectral features compared to previously reported changes in gas permeability and permselectivity of these membranes as a function of ion fluence. Positron data corroborate the explanation of these changes in terms of molecular damage caused by the implant: for fluences up to about 1 × 1015 cm-2, the concentration of irradiation-induced defects merely increases with implant fluence; while fluences exceeding this threshold value create a second type of positron annihilation site, thereby marking a distinct change in the structure of the polymer, which is responsible for the vast improvement of gas permselectivity data found at the same threshold fluence. PACS codes: 78.70.Bj - positron annihilation; 61.82.Pv - polymers, organic compounds; 61.72.Ww - doping and impurity implantation. © 1998 John Wiley & Sons, Inc. J. Polym. Sci. B Polym. Phys. 36: 2413-2421, 1998
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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