Search Results - (Author, Cooperation:C. Beer)

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  1. 1
    Staff View
    Publication Date:
    2018-06-02
    Publisher:
    The Society of Nuclear Medicine (SNM)
    Print ISSN:
    0022-3123
    Topics:
    Medicine
    Published by:
    http://www.snm.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2014-09-26
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Biomass ; Carbon/*metabolism ; *Carbon Cycle ; *Climate ; *Ecosystem ; Feedback ; Hydrology ; Models, Theoretical ; Plants/metabolism ; Rain ; Soil/chemistry ; Temperature ; Time Factors ; Water Cycle
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Staff View
    Publication Date:
    2013-08-21
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    *Carbon Cycle ; *Climate Change ; *Ecosystem ; Plants/metabolism ; Temperature
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Noble, R. L. ; Beer, C. T. ; Cutts, J. H.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1958
    Staff View
    ISSN:
    1749-6632
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Natural Sciences in General
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1749-6632.1958.tb54906.x

    Articles: DFG German National Licenses
  5. 5
    MORRIS, M. J. ; WINGFIELD, M. J. ; BEER, C.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1993
    Staff View
    ISSN:
    1365-3059
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes:
    A dieback of Acacia mearnsii trees was observed in the Mkomasi river valley, Natal Province, South Africa. A fungus, tentatively identified as Ceratocystis fimbriata, was consistently isolated from affected twigs and branches. Reinoculation of the pathogen resulted in the development of typical wilt and dieback of A. mearnsii seedlings and saplings and in a dieback of Protea cynaroides plants. This is the first report of this disease in South Africa.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3059.1993.tb01570.x

    Articles: DFG German National Licenses
  6. 6
    de Beer, C.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0301-4207
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Energy, Environment Protection, Nuclear Power Engineering
    Economics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0301-4207(78)90071-5

    Articles: DFG German National Licenses
  7. 7
    Beer, C.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0732-118X
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Psychology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0732-118X(83)90004-1

    Articles: DFG German National Licenses
  8. 8
    Beer, C. N. ; Foote, B. L.
    Springer
    Published 1975
    Staff View
    ISSN:
    1436-4646
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Computer Science
    Mathematics
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01681335

    Articles: DFG German National Licenses
  9. 9
    Staff View
    ISSN:
    1432-1041
    Keywords:
    caffeine ; quinolones ; paraxanthine ; enoxacin ; ciprofloxacin ; pipemidic acid ; norfloxacin ; drug interaction ; pharmacokinetics ; drug metabolism ; ofloxacin
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Medicine
    Notes:
    Summary The pharmacokinetics of caffeine, including formation of its major metabolite paraxanthine in plasma, has been investigated in 12 healthy males (age 20–40 years) alone and during co-administration of the 4-quinolones ofloxacin, norfloxacin, pipemidic acid, ciprofloxacin, and enoxacin; ciprofloxacin and enoxacin were given in 3 different dose levels. The naphthyridine derivative enoxacin and the pyrido-pyrimidine derivative pipemidic acid had caused marked inhibition of caffeine and paraxanthine metabolism, whereas the genuine quinolone derivatives norfloxacin and ciprofloxacin had little effect, and the pyrido-benzoxacine derivative ofloxacin had no detectable effect. The different molecular and spatial structures of the compounds appear to be responsible for the differences in inhibitory potency.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00637602

    Articles: DFG German National Licenses
  10. 10
    Staff View
    ISSN:
    1432-1041
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00561036

    Articles: DFG German National Licenses
  11. 11
    Beer, C. ; Wyk, P. W. J. ; Wingfield, M. J. ; Kemp, G. H. J.
    Springer
    Published 1995
    Staff View
    ISSN:
    1572-9699
    Keywords:
    Ceratocystis fimbriata ; C. moniliformis ; hat-shaped ascospores ; ultrastructure
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Abstract Ascospore development inCeratocystis fimbriata Ell. & Halst. commenced in an eight-nucleate ascus. A single vesicle formed along the periphery of the ascus from fragments of ascospore delimiting membranes, surrounded all eight nuclei and eventually invaginated, first forming pouches with open ends, then finally enclosing each of the eight nuclei in a separate sac, thus delimiting ascospores. Pairing of the ascospores followed and brim formation occurred at the contact area between two ascospores. Osmiophilic bodies contributed to the formation of brim-like appendages by fusing to the ascospore walls. Additional brims were observed at opposite ends of the ascospores giving them a double-brimmed appearance.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00872930

    Articles: DFG German National Licenses
  12. 12
    Beer, C. F. De ; Swanepoel, J. W. H.
    Springer
    Published 1999
    Staff View
    ISSN:
    1573-1375
    Keywords:
    Bins ; bootstrap ; circumference ; data-driven selector ; density estimation
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Computer Science
    Mathematics
    Notes:
    Abstract Two very effective data-based procedures which are simple and fast to compute are proposed for selecting the number of bins in a histogram. The idea is to choose the number of bins that minimizes the circumference (or a bootstrap estimate of the expected circumference) of the frequency histogram. Contrary to most rules derived in the literature, our method is therefore not dependent on precise asymptotic analyses. It is shown by means of an extensive Monte-Carlo study that our selectors perform well in comparison with recently suggested selectors in the literature, for a wide range of density functions and sample sizes. The behaviour of one of the proposed rules is also illustrated on real data sets.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1008858025515

    Articles: DFG German National Licenses
  13. 13
    Gout, P. W. ; Dunn, B. P. ; Beer, C. T.

    New York, NY [u.a.] : Wiley-Blackwell
    Published 1971
    Staff View
    ISSN:
    0021-9541
    Keywords:
    Life and Medical Sciences ; Cell & Developmental Biology
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Biology
    Medicine
    Notes:
    Acronycine  -  an alkaloid with antineoplastic activity against a wide range of experimental tumors  -  at concentrations of 0.5-12 μg/ml rapidly inhibits RNA synthesis in L5178Y mouse lymphoma and IRC rat monocytic leukemia cultures. Culture growth is arrested only at acronycine concentrations which markedly inhibit RNA synthesis. DNA synthesis is inhibited at rather higher concentrations but this is not a prerequisite of the arrest of growth. It is suggested that the arrest of growth may be a consequence of the inhibition of RNA synthesis.In both cultures arrest of growth coincides with the appearance of many cells with two apparently normal nuclei. Cells are not arrested in mitosis. It is shown these binucleated cells very probably arise from an inhibition of cell cleavage. Studies with synchronized cultures show that at low drug concentrations, more than one cell cycle may elapse before growth is arrested and binucleated cells appear, indicating the effect on cytokinesis is not immediate. The results suggest that the arrest of growth may be a result of a slow depletion of a component essential for cell cleavage. The disturbance at division is a major factor in arresting growth at low drug concentrations. At higher acronycine concentrations, when RNA synthesis may be inhibited by 80-90%, the cytotoxic effects appear earlier and are less specifically directed at cytokinesis; DNA synthesis is then also rapidly and markedly inhibited.
    Additional Material:
    8 Ill.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1002/jcp.1040780116

    Articles: DFG German National Licenses