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  • 1
    Electronic Resource
    Electronic Resource
    Gas chromatography: an investigative tool in multiple allergies to essential oils (2002)
    Oxford, UK : Munksgaard International Publishers
    Contact dermatitis 47 (2002), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Essential or fragrant oils are volatile odourous mixtures of organic chemical compounds that are widely used in aromatherapy and in the perfume industry. Because of their frequent use, allergy to essential oils is being increasingly recognized. We report 2 cases of multiple allergies to essential oils in professional aromatherapists. Gas chromatography/mass spectrometry was used to analyse the oils in order to identify a common allergen responsible for the contact dermatitis. In both the cases, α- and β-pinene were found to be the most common constituent in the oils and thus appeared to be key allergens. α-pinene was confirmed as an allergen on repeat patch testing with pure α-pinene in both cases. 12 controls tested were negative for the same. Gas chromatography-mass spectrometry was found to be an extremely useful tool that could be utilized in investigating multiple allergies to essential oils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0536.2002.470506.x
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  • 2
    Electronic Resource
    Electronic Resource
    The ionospheric footprint of antiparallel merging regions on the dayside magnetopause (2000)
    Springer
    Annales geophysicae 18 (2000), S. 511-516 
    Details
    ISSN: 0992-7689
    Keywords: Ionosphere (ionosphere-magnetosphere interactions) ; Magnetospheric physics (magnetopause, cusp and boundary layers; magnetosphere-ionosphere interactions)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The antiparallel merging hypothesis states that reconnection takes place on the dayside magnetopause where the solar and geomagnetic fields are oppositely directed. With this criterion, we have mapped the predicted merging regions to the ionosphere using the Tsyganenko 96 magnetic field model, distinguishing between regions of sub-Alfvénic and super-Alfvénic magnetosheath flow, and identifying the day-night terminator. We present the resulting shape, width and latitude of the ionospheric dayside merging regions in both hemispheres, showing their dependence on the Earth’s dipole tilt. The resulting seasonal variation of the longitudinal width is consistent with the conjugate electric fields in the northern and southern cusps, as measured by the SuperDARN HF radars, for example. We also find a seasonal shift in latitude similar to that observed in satellite cusp data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-000-0511-2
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  • 3
    Electronic Resource
    Electronic Resource
    High-time resolution conjugate SuperDARN radar observations of the dayside convection response to changes in IMF By (2000)
    Springer
    Annales geophysicae 18 (2000), S. 191-201 
    Details
    ISSN: 0992-7689
    Keywords: Ionosphere (plasma convection) ; Magnetospheric physics (magnetopause, cusp, and boundary layers; solar wind – magnetosphere interactions)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract We present data from conjugate SuperDARN radars describing the high-latitude ionosphere’s response to changes in the direction of IMF By during a period of steady IMF Bz southward and Bx positive. During this interval, the radars were operating in a special mode which gave high-time resolution data (30 s sampling period) on three adjacent beams with a full scan every 3 min. The location of the radars around magnetic local noon at the time of the event allowed detailed observations of the variations in the ionospheric convection patterns close to the cusp region as IMF By varied. A significant time delay was observed in the ionospheric response to the IMF By changes between the two hemispheres. This is explained as being partially a consequence of the location of the dominant merging region on the magnetopause, which is ∼8/12RE closer to the northern ionosphere than to the southern ionosphere (along the magnetic field line) due to the dipole tilt of the magnetosphere and the orientation of the IMF. This interpretation supports the anti-parallel merging hypothesis and highlights the importance of the IMF Bx component in solar wind-magnetosphere coupling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-000-0191-y
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  • 4
    Electronic Resource
    Electronic Resource
    Regulation of cholecystokinin secretion in humans (2000)
    Springer
    Journal of gastroenterology 35 (2000), S. 181-187 
    Details
    ISSN: 1435-5922
    Keywords: Key words: cholecystokinin, CCK, radioimmunoassay, bioassay, gastrointestinal hormone, releasing factor, luminal CCK-releasing factor, pancreas, secretion, gallbladder
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005350050328
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    Paper (German National Licenses)
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