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  • Articles  (804)
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  • 1
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    Local up-regulation of interferon-γ (IFN-γ) following disc herniation is involved in the inflammatory response underlying acute lumbar radicular pain (2017)
    Elsevier
    Details
    Publication Date: 2017-09-01
    Print ISSN: 1043-4666
    Electronic ISSN: 1096-0023
    Topics: Biology , Medicine
    Published by Elsevier
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Correlation of procollagen mRNA levels in normal and transformed chick embryo fibroblasts with different rates of procollagen synthesis (1978)
    s.l. : American Chemical Society
    Biochemistry 17 (1978), S. 1581-1590 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00602a001
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Preferred base sites of actinomycin-deoxyribonucleic acid bindings by circular dichroism (1976)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 98 (1976), S. 864-865 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00419a052
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  • 4
    Electronic Resource
    Electronic Resource
    Determination of 2-substituted-5-norbornenes by nuclear magnetic resonance spectrometry (1967)
    s.l. : American Chemical Society
    Analytical chemistry 39 (1967), S. 1860-1862 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac50157a060
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  • 5
    Electronic Resource
    Electronic Resource
    Analysis of 2-substituted-2-methyl-5-norbornenes by nuclear magnetic resonance spectrometry (1971)
    s.l. : American Chemical Society
    Analytical chemistry 43 (1971), S. 1629-1633 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60306a004
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  • 6
    Electronic Resource
    Electronic Resource
    Meridian-scanning photometer, coherent HF radar, and magnetometer observations of the cusp: a case study (1999)
    Springer
    Annales geophysicae 17 (1999), S. 159-172 
    Details
    ISSN: 0992-7689
    Keywords: Ionosphere (auroral ionosphere; plasma convection) ; Magnetospheric physics (magnetopause, cusp, and boundary layers)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The dynamics of the cusp region and post-noon sector for an interval of predominantly IMF By, Bz 〈 0 nT are studied with the CUTLASS Finland coherent HF radar, a meridian-scanning photometer located at Ny Ålesund, Svalbard, and a meridional network of magnetometers. The scanning mode of the radar is such that one beam is sampled every 14 s, and a 30° azimuthal sweep is completed every 2 minutes, all at 15 km range resolution. Both the radar backscatter and red line (630 nm) optical observations are closely co-located, especially at their equatorward boundary. The optical and radar aurora reveal three different behaviours which can interchange on the scale of minutes, and which are believed to be related to the dynamic nature of energy and momentum transfer from the solar wind to the magnetosphere through transient dayside reconnection. Two interpretations of the observations are presented, based upon the assumed location of the open/closed field line boundary (OCFLB). In the first, the OCFLB is co-located with equatorward boundary of the optical and radar aurora, placing most of the observations on open field lines. In the second, the observed aurora are interpreted as the ionospheric footprint of the region 1 current system, and the OCFLB is placed near the poleward edge of the radar backscatter and visible aurora; in this interpretation, most of the observations are placed on closed field lines, though transient brightenings of the optical aurora occur on open field lines. The observations reveal several transient features, including poleward and equatorward steps in the observed boundaries, “braiding” of the backscatter power, and 2 minute quasi-periodic enhancements of the plasma drift and optical intensity, predominantly on closed field lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-999-0159-5
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  • 7
    Electronic Resource
    Electronic Resource
    Post-noon two-minute period pulsating aurora and their relationship to the dayside convection pattern (1999)
    Springer
    Annales geophysicae 17 (1999), S. 877-891 
    Details
    ISSN: 0992-7689
    Keywords: Magnetospheric physics (auroral phenomena; magnetopause, cusp, and boundary layers; MHD waves and instabilities)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Poleward-moving auroral forms, as observed by meridian-scanning photometers, in the vicinity of the cusp region are generally assumed to be the optical signature of flux transfer events. Another class of quasi-continuous, short period (1–2 min) wave-like auroral emission has been identified, closely co-located with the convection reversal boundary in the post-noon sector, which is similar in appearance to such cusp aurora. It is suggested that these short period wave-like auroral emissions, the optical signature of boundary plasma sheet precipitation in the region 1 field-aligned current system, are associated with ULF magnetohydrodynamic wave activity, which is observed simultaneously by ground magnetometer stations. This association with ULF wave activity is strengthened by the observation of several harmonic frequencies in the pulsation spectrum, each an overtone of the fundamental standing wave resonance frequency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-999-0877-8
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  • 8
    Electronic Resource
    Electronic Resource
    Multi-instrument probing of the polar ionosphere under steady northward IMF (1999)
    Springer
    Annales geophysicae 18 (1999), S. 90-98 
    Details
    ISSN: 0992-7689
    Keywords: Ionosphere (polar ionosphere) ; Magnetospheric physics (magnetosphere-ionosphere interactions; polar cap phenomena)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Observations are presented of the polar ionosphere under steady, northward IMF. The measurements, made by six complementary experimental techniques, including radio tomography, all-sky and meridian scanning photometer optical imaging, incoherent and coherent scatter radars and satellite particle detection, reveal plasma parameters consistent with ionospheric signatures of lobe reconnection. The optical green-line footprint of the reconnection site is seen to lie in the sunward plasma convection of the lobe cells. Downstream in the region of softer precipitation the reverse energy dispersion of the incoming ions can be identified. A steep latitudinal density gradient at the equatorward edge of the precipitation identifies the general location of an adiaroic boundary, separating the open field lines of polar lobe cells from the closed field of viscous-driven cells. Enhancements in plasma density to the south of the gradient are interpreted as ionisation being reconfigured as it is thrust against the boundary by the antisunward flow of the viscous cells near noon. Each of the instruments individually provides valuable information on certain aspects of the ionosphere, but the paper demonstrates that taken together the different experiments complement each other to give a consistent and comprehensive picture of the dayside polar ionosphere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-000-0090-2
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  • 9
    Electronic Resource
    Electronic Resource
    Reconfiguration and closure of lobe flux by reconnection during northward IMF: possible evidence for signatures in cusp/cleft auroral emissions (1999)
    Springer
    Annales geophysicae 17 (1999), S. 996-1011 
    Details
    ISSN: 0992-7689
    Keywords: Magnetospheric physics (magnetopause, cusp and boundary layers; solar-wind-magnetosphere interactions) ; Space plasma physics (magnetic reconnection)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Observations are presented of the response of the dayside cusp/cleft aurora to changes in both the clock and elevation angles of the interplanetary magnetic field (IMF) vector, as monitored by the WIND spacecraft. The auroral observations are made in 630 nm light at the winter solstice near magnetic noon, using an all-sky camera and a meridian-scanning photometer on the island of Spitsbergen. The dominant change was the response to a northward turning of the IMF which caused a poleward retreat of the dayside aurora. A second, higher-latitude band of aurora was seen to form following the northward turning, which is interpreted as the effect of lobe reconnection which reconfigures open flux. We suggest that this was made possible in the winter hemisphere, despite the effect of the Earth’s dipole tilt, by a relatively large negative X component of the IMF. A series of five events then formed in the poleward band and these propagated in a southwestward direction and faded at the equatorward edge of the lower-latitude band as it migrated poleward. It is shown that the auroral observations are consistent with overdraped lobe flux being generated by lobe reconnection in the winter hemisphere and subsequently being re-closed by lobe reconnection in the summer hemisphere. We propose that the balance between the reconnection rates at these two sites is modulated by the IMF elevation angle, such that when the IMF points more directly northward, the summer lobe reconnection site dominates, re-closing all overdraped lobe flux and eventually becoming disconnected from the Northern Hemisphere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-999-0996-2
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  • 10
    Electronic Resource
    Electronic Resource
    Effects of the MHC on hormonal induction of mammary tumors and function of hypophyseal isografts in the mouse (1990)
    Springer
    Immunogenetics 31 (1990), S. 347-355 
    Details
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract While the role of the H-2 complex in the resistance to virally induced tumors has been extensively studied, little is known about its influence on the development of epithelial tumors of non-viral etiology, although such tumors are most prevalent in humans. Therefore, we analyzed the role of the H-2 complex in susceptibility to mammary tumors induced by hormonal stimulation from heterotopic hypophyseal isografts in H-2 congenic strains from C57BL/10, BALB/c, and 020/A backgrounds. This method of induction allows an assessment of the effect ofH-2 genes on the function of various organs involved in this process. We found that the tumor susceptibility genes map to two segments: PE-S, and to the right of S. The mechanisms by which the H-2 complex affects the induction of mammary tumors in C57BL/10 congenic strains seem to include an influence on several factors involved in the hormonal stimulation, because the susceptible B10 congenic strains have higher plasma levels of prolactin and the H-2 complex also affects the growth of hypophyseal isografts. Their size correlates with tumor development in individual mice in the resistant C57BL/10 congenic strains. We reported previously H-2-dependent differences in levels of the estrogen receptor in hypophysis. For this study, we measured the levels of estrogen receptors in uteri to assess the tissue specificity of this effect of H-2. However, no influence of the H-2 complex on estrogen receptor levels was observed in uteri. Strains from BALB/c and 020 backgrounds developed mammary tumors much earlier than the B10 congenic strains, indicating a strong influence of non-H-2 genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02115009
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