Search Results - (Author, Cooperation:B. Whittington)

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  1. 1
    C. E. Conn ; R. Bythell-Douglas ; D. Neumann ; S. Yoshida ; B. Whittington ; J. H. Westwood ; K. Shirasu ; C. S. Bond ; K. A. Dyer ; D. C. Nelson
    American Association for the Advancement of Science (AAAS)
    Published 2015
    Staff View
    Publication Date:
    2015-08-01
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Arabidopsis/*metabolism/*parasitology ; Arabidopsis Proteins/*classification/genetics/metabolism ; *Biological Evolution ; Gene Dosage ; Germination ; Heterocyclic Compounds, 1-Ring/*metabolism ; Host-Parasite Interactions ; Hydrolases/*classification/genetics/metabolism ; Lactones/*metabolism ; Orobanchaceae/*enzymology/genetics/growth & development ; Phylogeny ; Plant Growth Regulators/*metabolism ; Plant Roots/metabolism/parasitology ; Plants, Genetically Modified/genetics/metabolism
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Whittington, B. I. ; Anderson, J. R.
    Springer
    Published 1992
    Staff View
    ISSN:
    1572-879X
    Keywords:
    Ion exchange ; AlPO4-5 ; VAPO-5 ; defect sites ; copper ; ESR
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    Abstract The reaction of copper salts with AlPO4-5 or Vv-VAPO-5 under acidic (CuCl2, pH adjusted to 2) but especially basic conditions (Cu(NH3) 4 2+ , pH adjusted to 9) gives ion incorporations greater than expected by a simple ion exchange mechanism (both AlPO4-5 and Vv-VAPO-5 could be expected to have no cation exchange capacity). Ion incorporation is proposed to occur initially at defect sites, and examination of the ESR spectrum of a dehydrated, evacuated CuCl2-exchanged AlPO4-5 shows that these defect sites give rise to a number of unique environments upon CuII incorporation. The CuCl2-exchanged VAPO-5 retains a significant toluene accessibility to the Vv sites in the VAPO-5. However, the toluene accessibility in the Cu(NH3) 4 2+ -exchanged VAPO-5 is significantly reduced and we propose this is due to a combination of the presence of crystalline CuO and structural collapse from reaction with base (NH4OH). The ability of treatment with base (NH4OH, pH ≈ 13) to restrict access of toluene to the Vv sites of the original VAPO-5 was verified in a separate experiment.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00764348

    Articles: DFG German National Licenses