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  • 1
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    Kingston, R.I., etc. : Periodicals Archive Online (PAO)
    The Historian. 55:1 (1992:Autumn) 160 
    ISSN: 0018-2370
    Topics: History
    Description / Table of Contents: THE AMERICAS
    Notes: Book Reviews
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  • 2
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Studies of the prevalence of antibody to murine cytomegalovirus (MCMV) in free-living wild mice (Mus domesticus) trapped in diverse regions of Australia and on a sub-Antarctic island indicated that 90% of 468 mice had serum antibody to MCMV. Twenty-six field isolates of MCMV were plaqu-epurified from salivary gland extracts of representative seropositive mice. These isolates varied considerably in their ability to replicate in the salivary glands of weanling BALB/c mice with 9 of 15 failing to reach significant titres in this organ and the titres of the remaining 6 strains varying by at least 100-fold. The high frequency of restriction fragment length polymorphisms observed suggests widespread genetic heterogeneity exists among the strains. This observation was mirrored at the polypeptide level by Western blot analyses with polyclonal antisera to MCMV. The isolation in this study of four genetically distinct strains of MCMV from a single wild mouse and several strains from other individual mice demonstrates that multiple infections with MCMV may be commonplace in wild mice.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Behavior genetics 12 (1982), S. 435-448 
    ISSN: 1573-3297
    Keywords: wild and inbred mice ; male aggression ; biometrical analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract For a genetic analysis of aggression, wild males were crossed to two inbred strains, BALB/c and C57BL, and to wild females. The male progeny were tested against BALB/c and subsequently against C57BL standard opponents in a neutral arena during two successive 5-min encounters. Attack latency, number of bites, number of attacks, and total attack time were highly correlated within each 5-min period but the correlations between periods were relatively low. In the first 5 min, mice with a BALB/c mother were far more aggressive toward the C57BL opponent, and vice versa. This maternal effect complicated the genetic analysis, but there was considerable additive genetic variation for all the main measures, the narrow heritabilities ranged from 0.56 to 0.75, and there was little directional dominance for high aggression. The genetic architecture suggested that stabilizing selection is the main selective force behind the evolution of variation in male social aggression.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 1007-1014 
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: An easily constructed, cheap and compact stress relaxometer has been designed for aging tests on elastomers. Its construction is such as to allow it to fit inside a multicavity metal block oven commonly used for aging tests. The instrument works well on continuous and intermittent cycles and its action is illustrated by a brief examination of the stress relaxation properties of vulcanized nitrile rubber/PVC blends. The presence of PVC increases the initial (physical) relaxation both at high and normal temperatures under conditions of continuous stress. The rate of relaxation thereafter increase with increase in PVC content. Under intermittent conditions the PVC seems to encourage a crosslinking reaction, as does carbon black.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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