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  • 1995-1999  (2)
  • 1985-1989  (2)
Materialart
Erscheinungszeitraum
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biochemistry 58 (1989), S. 351-375 
    ISSN: 0066-4154
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Chemie und Pharmazie , Biologie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 601-603 
    ISSN: 1399-0047
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Notizen: Five different crystal forms of recombinant chicken-liver glutathione S-transferase CL 3-3 have been obtained by the vapor-diffusion method. The form A crystals are monoclinic C2, a = 125.56, b = 85.81, c = 52.71 Å and β = 114.64°, and diffract to 4 Å resolution. The form B crystals are monoclinic P21, a = 105.13, b = 118.54, c = 62.62 Å and β = 124.74°, and diffract to 2.8 Å resolution. The form C crystals are orthorhombic C222l, a = 101.69, b = 115.46, c = 95.40 Å, and diffract to 2.8 Å resolution. The form D crystals are tetragonal, P41212 or P43212, a = b = 115.31, c = 171.20 Å and diffract to 3.5 Å resolution. The form E crystals are hexagonal, P61 or P65, a = b = 104.23, c = 114.35 Å, diffract to 3.5 Å resolution. Forms A, C and E have one dimer of molecular weight 50 kDa, while forms B and D have two dimers per asymmetric unit, respectively.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Hyperfine interactions 41 (1988), S. 741-744 
    ISSN: 1572-9540
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Pure iron foils were implanted with nitrogen ions at energy of 10 keV and with 1×1017N ions/cm2. Doses of pre-self-implantation were 5×1016 and 3.7×1016 17Fe ions/cm2 respectively, and the iron ion energy was 27 keV. A comparison of iron nitrides formed on surfaces with and without pre-self-implantation has been obtained. The results show that radiation damage apparently influences the formation of iron nitrides. The formation and transformation of nitrides after N implantation or after annealing can be explained by a model of implantation-induced transformation.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    New York, NY [u.a.] : Wiley-Blackwell
    International Journal for Numerical and Analytical Methods in Geomechanics 19 (1995), S. 107-126 
    ISSN: 0363-9061
    Schlagwort(e): Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Architektur, Bauingenieurwesen, Vermessung , Geologie und Paläontologie
    Notizen: A neural network approach for the prediction of pile bearing capacity by the stress-wave matching technique is presented. The main advantage of this approach over the traditional manual or automated matching approach is that it avoids the time-consuming process of iterative adjustment. This makes it feasible to determine the static pile capacity in real time in the field. Another benefit of this approach is that as more case histories become available, the neural network can be improved by learning from these new examples.A three-layer back-propagation network is set up to illustrate the capability of the proposed approach for 70 dynamically tested concrete bored piles. A wave equation model developed at the National University of Singapore and coded in the NUSWAP computer program is used to formulate the problem. Up to 14 of the 70 piles (20 percent) are used in training the network. The NUSWAP program is used to generate simulation training examples based on the manually fitted training examples for further training of the network. Different network configurations are examined. The trained network produces results exhibiting good stress-wave matching qualities compared to those obtained by manual fitting. The pile bearing capacities predicted by the two approaches agree very closely. The load-settlement curve and axial load distribution in the pile computed using the network-predicted soil parameters are in good agreement with the field measurements obtained from a maintained load test.
    Zusätzliches Material: 10 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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