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  • 1
    Electronic Resource
    Electronic Resource
    Physiological and Molecular Mechanisms of Lymphocyte Homing (1992)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Immunology 10 (1992), S. 561-591 
    Details
    ISSN: 0732-0582
    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.iy.10.040192.003021
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  • 2
    Electronic Resource
    Electronic Resource
    The annual variation of the night-time values of the geomagnetic field (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 111 (1992), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: In this paper we present the results of an analysis of the variation of period of one year in night-time H data. The analysis indicates that this annual variation comprises of two components. (1) A component whose amplitude depends on latitude and is of opposite phase in the two hemispheres. This component is assumed to be due to the change of the latitude of the ring current caused by the solar wind, as originally proposed by Malin & Isikara (1976). (2) A smaller component which, in a given year, has an amplitude and phase that is approximately the same at all latitudes but which may change from year to year. Its origin is not known but it is suggested that it may be found in the modulation of a distant current, such as the cross-tail current of the night-time magnetosphere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1992.tb00561.x
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  • 3
    Electronic Resource
    Electronic Resource
    Studies of worldwide secular trends in the solar daily geomagnetic variation (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 100 (1990), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Secular changes in the solar geomagnetic variation at 11 observatories with a worldwide distribution have been studied. The secular changes at UK observatories were found to be large. Numerical calculations, details of which are described in this paper, agree in predicting the large changes at UK observatories. The numerical calculations also predict a large secular change in Sq at Hermanus in all elements; this would be expected as the main field at this station shows a large secular change. The secular change in Sq observed at Hermanus is, however, found to be fairly small compared with that observed at the other stations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1990.tb00699.x
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  • 4
    Electronic Resource
    Electronic Resource
    A Worldwide Study of the H, D and Z Variation On Abnormal Quiet Days (Aqds) (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 114 (1993), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: An extensive analysis, using 80 stations, has been made of the latitudinal and longitudinal variation of the additional fields in H, D and Z that occurred on Abnormal Quiet Days (AQDs) during the Northern Hemisphere winter months in the years 1964-65. This analysis shows that the additional fields occurring on AQDs may be represented by a single-current vortex (SCV) that has a focus in the latitude range 15-20°N for the Northern Hemisphere winter AQDs. the evidence strongly suggests that the most likely location of the SCV is the ionosphere, although no further insight into what drives it is forthcoming.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1993.tb01477.x
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  • 5
    Electronic Resource
    Electronic Resource
    Seasonal and sunspot-cycle changes in the day-to-day variability of Sq (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 120 (1995), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A study has been made of seasonal and sunspot-cycle changes in the day-to-day variability of Sq, using data from magnetic observatories for which long runs exist. For sunspot-cycle changes, the absolute variability, as measured by the standard deviation (sd) of the range, increases from sunspot minimum to sunspot maximum. However, the ratio of sd to range, arguably a more meaningful parameter physically, is generally smaller at sunspot maximum than sunspot minimum. This is interpreted to show that the fractional variability in dynamo winds is less at sunspot maximum than sunspot minimum. The seasonal changes of variability show consistent global patterns, including an interesting hemispheric asymmetry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1995.tb05919.x
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  • 6
    Electronic Resource
    Electronic Resource
    Germinal centre B cells: antigen specificity and changes in heavy chain class expression (1982)
    [s.l.] : Nature Publishing Group
    Nature 298 (1982), S. 377-379 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Germinal centre B cells possess unique cell-surface features. One of the most important of these is defined by peanut agglutinin (PNA)4"7, a plant lectin with specificity for terminal galactosyl residues. In antigen-stimulated lymphoid organs, fluorescence-labelled PNA defines a discrete population ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/298377a0
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  • 7
    Electronic Resource
    Electronic Resource
    Atmospheric waves in the ionosphere due to total solar eclipse (1977)
    [s.l.] : Nature Publishing Group
    Nature 269 (1977), S. 497-498 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The angle of arrival of a continuous wave (CW) obliquely propagated signal on 2.5 MHz was used over a short path of 71.4km, from Lyndhurst (3833/S, 14516'E) to Beveridge (3728/S, 14456/E). On 23 October 1 976, a total eclipse of the Sun occurred. The radio path was in the path of totality. Two ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/269497a0
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  • 8
    Electronic Resource
    Electronic Resource
    The chemokine receptor CCR4 in vascular recognition by cutaneous but not intestinal memory T cells (1999)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 400 (1999), S. 776-780 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Lymphocytes that are responsible for regional (tissue-specific) immunity home from the blood to the intestines, inflamed skin or other sites through a multistep process involving recognition of vascular endothelial cells and extravasation. Chemoattractant cytokine molecules known as chemokines ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/23495
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  • 9
    Electronic Resource
    Electronic Resource
    L-selectin-mediated lymphocyte rolling on MAdCAM-1 (1993)
    [s.l.] : Nature Publishing Group
    Nature 366 (1993), S. 695-698 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] High endothelial venule (HEV) ligands for the lymphocyte L-selectin homing receptor display an epitope defined by the peripheral lymph node addressin-specific monoclonal antibody MECA-79: MECA-79 preferentially reacts with L-selectin-binding HEV, inhibits L-selectindependent lymphocyte binding to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/366695a0
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  • 10
    Electronic Resource
    Electronic Resource
    AbnormalSq behaviour (1989)
    Springer
    Pure and applied geophysics 131 (1989), S. 463-483 
    Details
    ISSN: 1420-9136
    Keywords: Abnormal quiet days ; Sq(H)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract It is well-known that the amplitude and phase of theSq(H) variation show considerable variability from day to day. In this paper we consider one aspect of the phase variability—that associated with AQDs. AQDs (or “abnormal quiet days”) are defined as magnetically quiet days where the maximum excursion ofH at a mid-latitude station on the poleward side of the focus occurs outside the “normal” time range 0830–1330 LST. Such days exhibit properties, many of which appear quite distinct from the properties of the “normal”Sq(H) variation. The properties of AQDs, and the proposals that have been made to explain them, are considered in detail. The consequences of these proposals and some problems which need to be addressed in order to obtain a fuller understanding of the dynamics of the ionosphere on AQDs are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00876840
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