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  • 2000-2004  (1)
  • 1975-1979  (4)
  • 1970-1974  (8)
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  • 1
    Electronic Resource
    Electronic Resource
    Slow Viral Infections (1979)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Neuroscience 2 (1979), S. 309-340 
    Details
    ISSN: 0147-006X
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ne.02.030179.001521
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Experimental viral labyrinthitis (1975)
    [s.l.] : Nature Publishing Group
    Nature 254 (1975), S. 329-331 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have now studied the pathogenesis of acute viral infections of the inner ear in newborn hamsters, whose temporal bones are not calcified at birth. This made possible the use of fluorescence microscopy to localise infection at a cellular level after direct intralabyrinthine or intracerebral viral ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/254329a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Mammalian Cell Fusion : Induction of Premature Chromosome Condensation in Interphase Nuclei (1970)
    [s.l.] : Nature Publishing Group
    Nature 226 (1970), S. 717-722 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Further evidence is put forward for the inducibility of chromosome condensation, particularly its consequences in interphase cells that are not ready for ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/226717a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Somatic cell hybrids (1977)
    [s.l.] : Nature Publishing Group
    Nature 266 (1977), S. 804-804 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Cell Hybrids. By N. R. Ringertz and R. E. Savage. Pp. 366. (Academic: New York and London, 1976). $29.50; £20.95. THERE are relatively few events in the recent history of biology which have so fired and re-directed the imagination as somatic cell fusion. Suddenly, in the mid-1960s, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/266804a0
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Premitotic chromosome individualization in mammalian cells depends on topoisomerase II activity (2000)
    Springer
    Chromosoma 109 (2000), S. 235-244 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. When DNA topoisomerase II (topo II) activity is inhibited with a non-DNA-damaging topo II inhibitor (ICRF-193), mammalian cells become checkpoint arrested in G2-phase. In this study, we analyzed chromosome structure in cells that bypassed this checkpoint. We observed a novel type of chromosome aberration, which we call Ω-figures. These are entangled chromosome regions that indicate the persistence of catenations between nonhomologous sequences. The number of Ω- figures per cell increased sharply as cells evaded the transient block imposed by the topo II-dependent checkpoint, and the presence of caffeine (a checkpoint-evading agent) potentiated this increase. Thus, the removal of nonreplicative catenations, a process that promotes chromosome individualization in G2, may be monitored by the topo II-dependent checkpoint in mammals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004120000065
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Principles and methods of dilution refrigeration. II (1971)
    Springer
    Journal of low temperature physics 4 (1971), S. 1-39 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper is an extension of, and complementary to, an earlier paper by Wheatley, Vilches, and Abel. Some important fundamental questions which lead to degradation in the performance of a dilution refrigerator are considered: namely, convection on the dilute side and superfluid on the concentrated side. Experimental results are presented for a film suppressing still used in conjunction with a continuous-heat exchanger (several designs are considered) and a variable number (0–6) of step-heat exchangers of a copper-foil type with a high surface-area-to-viscous-impedance ratio. The first quantitative measurements of viscous heating on the dilute side are presented as well as measurements of thermal resistance on the dilute and concentrated side. Finally, the properties of the refrigerator under external heat load are considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00628435
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of a magnetic field on the melting curve of3He (1972)
    Springer
    Journal of low temperature physics 6 (1972), S. 445-453 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The melting curve of3He was measured below 25 mK and in magnetic fields of 2.12, 6.36, 31.8, and 63.6 kG. The compressional cooling technique was used with a capacitive pressure gauge and a54Mn-in-iron γ-ray anisotropy thermometer. A depression was observed in the melting curve, indicating nuclear spin ordering in the solid3He. The effect is larger in magnitude and develops more rapidly with field than the theoretically expected results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644078
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of a magnetic field on the melting curve of3He—Addendum (1972)
    Springer
    Journal of low temperature physics 9 (1972), S. 559-564 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An additional analysis of our low-temperature and high magnetic field measurements of the3He melting curve is presented, based on the assumption that the highest field (63.6 kG) theoretical melting curve is correct rather than the lowest field curve as assumed in the original paper. Between31.8 and63.6 kG there is reasonable agreement between experiment and theory, although a discrepancy remains at low fields that we assume is to be attributed to inaccuracies in the reduction of γ-ray anisotropies to temperatures. It is also shown that the measurements are not sufficiently precise to observe the effect seen in the(∂P/∂T) V,H measurements on solid3He by Kirk and Adams.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00655314
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  • 9
    Electronic Resource
    Electronic Resource
    Heat flow in superfluid 3He (1975)
    Springer
    Journal of low temperature physics 18 (1975), S. 501-517 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: The thermal resistance in both superfluid phases of 3He has been measured at 20.0 and 29.6 bar in zero magnetic field. Heat conduction in 3He-B is shown to be primarily hydrodynamic, and a regime of reproducible heat flow behavior in the A phase is reported. The viscosity of each phase as a function of temperature is calculated using an equation of the two-fluid model, and critical velocity effects are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00116140
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  • 10
    Electronic Resource
    Electronic Resource
    Compressional cooling of He3 to millidegree temperatures (1970)
    Springer
    Journal of low temperature physics 2 (1970), S. 423-448 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A study of adiabatic compressional cooling of a two-phase mixture of solid and liquid He 3 has been made. Details of the experimental arrangement are given. Using a flexible elastic low temperature He 3 cell that is compressed by liquid He 4 and precooled by a continuously operating dilution refrigerator, cooling to below 2 m°K was obtained from starting temperatures near 20 m°K. Frictional heating is remarkably low. Calculations are presented which investigate the fraction of solid formed and which suggest rather long thermal equilibrium times in the solid He 3 nuclear spin system. Application of the method to the production of bulk polarized He 3 nuclei is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652512
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