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  • 1
    Electronic Resource
    Electronic Resource
    GENETIC CONTROL OF SERUM IMMUNOGLOBULIN G LEVELS IN THE CHICKEN (1981)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 8 (1981), S. 0 
    Details
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Serum IgG (7S) levels differed significantly for chickens from 10 different inbred lines. Within lines differences between B blood groups were statistically significant.The genetic control of serum IgG was further examined using birds from B complex haplotypes marked at the B locus and the Ir-GAT locus. Birds from each of five subgroup haplotypes (B1B1Ir-GAT-Lo and -Hi, B19B19Ir-GAT-Lo and -Hi, and B2B2Ir-GAT intermediate) were tested for levels of serum IgG at 3, 6, 9, and 21 weeks of age. The rate and level of IgG reached in the serum was more than two-fold greater in the GAT-Hi birds than in the GAT-Lo. The Ir region of the B complex exerts some control over the ontogenesis of IgG, though most of the genetic variation seems not to be B complex associated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-313X.1981.tb00949.x
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  • 2
    Electronic Resource
    Electronic Resource
    Black Hole Models for Active Galactic Nuclei (1984)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 22 (1984), S. 471-506 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.22.090184.002351
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  • 3
    Electronic Resource
    Electronic Resource
    Inverse Compton Effect in Quasars (1966)
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 805-807 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE importance of the inverse Compton effect in intense radio sources has been emphasized on several occasions1-4. In particular, Hoyle, Burbidge and Sargent have suggested4 that Compton losses are so serious as to rule out some models for variable quasi-stellar sources (quasars) unless these ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/211805a0
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  • 4
    Electronic Resource
    Electronic Resource
    New Interpretation of Extragalactic Radio Sources (1971)
    [s.l.] : Nature Publishing Group
    Nature 229 (1971), S. 312-317 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The hypothesis that the energy involved in extragalactic violent events derives from the rotational energy of a large number of collapsing stars or pulsar-like bodies in galactic nuclei has been investigated. It shows that extended radio sources may be produced and energized by low frequency ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/229312a0
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  • 5
    Electronic Resource
    Electronic Resource
    Composition and Origin of Cosmic Rays (1968)
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 1005-1009 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The latest results on the composition of cosmic rays, and their theoretical implications, were discussed at a conference held in Cambridge during July 16–19. They point to a thermonuclear origin, but it is still a matter of speculation whether cosmic rays in the solar vicinity are produced in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2191005a0
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  • 6
    Electronic Resource
    Electronic Resource
    Model for the Evolution of Extended Radio Sources (1968)
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 127-131 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Large radio sources are influenced by the intergalactic medium and the cosmic black body radiation, both of which depend on red-shift in a predictable way. The type of source evolution implied by the radio data can be fitted by a simple model. This topic links with the X-ray background and the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/219127a0
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  • 7
    Electronic Resource
    Electronic Resource
    Extragalactic Soft X-ray Astronomy (1968)
    [s.l.] : Nature Publishing Group
    Nature 217 (1968), S. 326-329 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The opacity of the galaxy to soft X-rays may be less than previously supposed. This may permit a variety of extragalactic objects to be observed at ∼50 Å. Some implications of this situation are discussed ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/217326a0
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  • 8
    Electronic Resource
    Electronic Resource
    Possible Circular Polarization of Compact Quasars (1967)
    [s.l.] : Nature Publishing Group
    Nature 216 (1967), S. 147-147 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The synchrotron radiation from a system of rela-tivistic electrons moving in a uniform magnetic field of strength H gauss, with an isotropic distribution of pitch angles, will be circularly polarized by 100 (-) percent1'2, VL being the electron gyrofrequency ( 3 H Mc/s): the precise value depends ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/216147a0
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  • 9
    Electronic Resource
    Electronic Resource
    The Nature of Pulsar Radiation (1970)
    [s.l.] : Nature Publishing Group
    Nature 226 (1970), S. 622-624 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Pulsar radiation may be due to particles which gyrate while moving in bunches along curved orbits. If emitted by electrons, the pulses should come from near the speed of light circle; if emitted by protons, they should arise within a few stellar radii of the underlying ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/226622a0
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  • 10
    Electronic Resource
    Electronic Resource
    Cosmological Significance of the Relation between Red-shift and Flux Density for Quasars (1966)
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 1283-1283 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Red-shifts are now known1 for thirty-five quasars in the revised 3(7 Catalogue6, which is complete down to 9 flux units at 178 Mc/s (1 flux unit is 10~26 W m-2(c/s)~1). To analyse the data we study not log N-log S, but the more detailed relation between red-shift z and flux density S for these ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2111283a0
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