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  • 1980-1984  (5)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Bacteria recovered without subculture from infected human urines expressed iron-regulated outer membrane proteins (1984)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 24 (1984), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Twelve enteric bacterial strains were recovered by differential centrifugation of urines which were collected from clinically diagnosed and microbiologically confirmed cases of urinary tract infection. The outer membrane protein (OMP) profiles of the clinical isolates were then analysed by sodiumdodecylsulphate-polyacrylamide gel electrophoresis (SDS-PAGE). It was found that 5 of the 12 isolates (3 Escherichia coli strains, 1 Klebsiella pneumoniae and 1 Proteus mirabilis strain) expressed 2 or more high Mr proteins in the range of 66000 to 85000. These high Mr proteins were expressed by the same organisms during growth in vitro in iron-restricted conditions but not in iron-sufficient media.In addition, it was found that the major outer membrane proteins expressed by the clinical isolates varied considerably and that, in many cases, fresh isolates expressed fewer porin proteins than the same bacterial strains after growth in vitro in trypticase soy broth. This is thus the first evidence the E. coli, K. pneumoniae and P. mirabilis grow under iron-restricted conditions in the urinary tract of humans and that the outer membrane protein profile of clinical isolates differ from in vitro grown bacteria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1984.tb01315.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    CALCULATION OF CUMULATIVE PERCENTAGE AT SELECTED PARTICLE SIZES FROM BOTTOM WITHDRAWAL TUBE ANALYSIS (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 18 (1982), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : A new computation method is developed for the bottom withdrawal tube particle size analysis. A transformation on time scale is introduced so that the cumulative percentage of a selected particle size can be determined from a single continuous Oden cum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1982.tb00022.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of triple gluon coupling in semi-inclusive polarized scattering processes (1983)
    Springer
    The European physical journal 17 (1983), S. 335-340 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We show that the gluon helicity inside a proton and a photon can be deduced from a knowledge of a special combination of cross sections of the semi-inclusive processese+p→e+π+π+... ande ++e −→e ++e −+π+π+... Such a measurement could thus be used to check the QCD prediction that the gluon helicity increases linearly with lnQ 2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01571900
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Observation of oxygen impurities in single-crystal silicon by means of internal friction (1981)
    Springer
    Journal of low temperature physics 44 (1981), S. 259-264 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Two new internal friction peaks have been observed in single-crystal silicon in the temperature range from 100 to 270 K of the Arrhenius-type relaxation at kilohertz frequencies. The activation energies of the two peaks are 0.14 and 0.20 eV. We attribute them to vibration of trapped interstital oxygen and the oxygen-vacancy complex, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00120776
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    A quadratic programming model for optimal data distribution (1981)
    Springer
    BIT 21 (1981), S. 294-304 
    Details
    ISSN: 1572-9125
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, a quadratic programming model is developed to take into consideration a number of factors that can influence the process of optimal allocation of data among the nodes in a distributed database. The factors include communication costs, translation costs, congestion costs and storage costs. Beale's method is used to solve the resulting quadratic program. Some numerical examples are presented and the potentials of such an approach in the design and analysis of distributed databases are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01941464
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    Paper (German National Licenses)
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