Search Results - (Author, Cooperation:J. Hoek)

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  1. 1
    Staff View
    Publication Date:
    2014-04-18
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
  3. 3
    Joost, Th. ; Stolz, E. ; Hoek, J. C. S. ; Clermonts, E.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1984
    Staff View
    ISSN:
    1600-0536
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    Certain chemicals such as persulphates and formaldehyde are able to induce both immediate and delayed type reactions in the skin. The levels of delayed type response to persulphates (at 48 and 74 h), obtained by epicutaneous tests were subjected to comparative studies of shifts (48 versus 72 h) and statistical analysis. The 95% confidence limit of the mean value of shifts to persulphates was significantly higher than that of a standard routine battery as a whole and, with the exception of formaldehyde, also to that of other individual constituents of this battery, In the case of persulphates, this difference in shifts was due to an extremely low mean value of delayed-type response read at 48 h. The possible underlying mechanisms and the possible limiting rote of vaso-active amines in the early evolution of delayed-type response is discussed.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  4. 4
    Pijlman, FTA ; Rigter, SM ; Hoek, J ; Goldschmidt, HMJ ; Niesink, RJM

    Oxford, UK : Blackwell Publishing Ltd
    Published 2005
    Staff View
    ISSN:
    1369-1600
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    The total concentration of THC has been monitored in cannabis preparations sold in Dutch coffee shops since 1999. This annual monitoring was issued by the Ministry of Health after reports of increased potency. The level of the main psychoactive compound, Δ 9 -tetrahydrocannabinol (THC), is measured in marijuana and hashish. A comparison is made between imported and Dutch preparations, and between seasons. Samples of cannabis preparations from randomly selected coffee shops were analyzed using gas chromatography (GC-FID) for THC, CBD and CBN. In 2004, the average THC level of Dutch home-grown marijuana (Nederwiet) (20.4% THC) was significantly higher than that of imported marijuana (7.0% THC). Hashish derived from Dutch marijuana (Nederhasj) contained 39.3% THC in 2004, compared with 18.2% THC in imported hashish. The average THC percentage of Dutch marijuana, Dutch hashish and imported hashish was significantly higher than in previous years. It nearly doubled over 5 years. During this period, the THC percentage in imported marijuana remained unchanged. A higher price had to be paid for cannabis with higher levels of THC. Whether the increase in THC levels causes increased health risks for users can only be concluded when more data are available on adjusted patterns of use, abuse liability, bioavailability and levels of THC in the brain.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  5. 5
    Joost, Th. ; Siolz, E. ; Hoek, J. C. S. Van Der

    Oxford, UK : Blackwell Publishing Ltd
    Published 1985
    Staff View
    ISSN:
    1600-0536
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  6. 6
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0920-5632
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  7. 7
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0920-5632
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  8. 8
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0021-9991
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Computer Science
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  9. 9
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0021-9991
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Computer Science
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  10. 10
    Hochberg, D. ; Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0550-3213
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  11. 11
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0550-3213
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  12. 12
    Hoek, J. ; Smit, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0550-3213
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  13. 13
    Groot, R. ; Hoek, J. ; Smit, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0550-3213
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  14. 14
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0550-3213
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  15. 15
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0550-3213
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  16. 16
    Hoek, J. ; Kawamoto, N. ; Smit, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0550-3213
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  17. 17
    Hoek, J. ; Teper, M. ; Waterhouse, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0550-3213
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  18. 18
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0010-4655
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Computer Science
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  19. 19
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0010-4655
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Computer Science
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  20. 20
    Hoek, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0010-4655
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Computer Science
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses