Search Results - (Author, Cooperation:G. Acton)

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  1. 1
    H. Palike ; M. W. Lyle ; H. Nishi ; I. Raffi ; A. Ridgwell ; K. Gamage ; A. Klaus ; G. Acton ; L. Anderson ; J. Backman ; J. Baldauf ; C. Beltran ; S. M. Bohaty ; P. Bown ; W. Busch ; J. E. Channell ; C. O. Chun ; M. Delaney ; P. Dewangan ; T. Dunkley Jones ; K. M. Edgar ; H. Evans ; P. Fitch ; G. L. Foster ; N. Gussone ; H. Hasegawa ; E. C. Hathorne ; H. Hayashi ; J. O. Herrle ; A. Holbourn ; S. Hovan ; K. Hyeong ; K. Iijima ; T. Ito ; S. Kamikuri ; K. Kimoto ; J. Kuroda ; L. Leon-Rodriguez ; A. Malinverno ; T. C. Moore, Jr. ; B. H. Murphy ; D. P. Murphy ; H. Nakamura ; K. Ogane ; C. Ohneiser ; C. Richter ; R. Robinson ; E. J. Rohling ; O. Romero ; K. Sawada ; H. Scher ; L. Schneider ; A. Sluijs ; H. Takata ; J. Tian ; A. Tsujimoto ; B. S. Wade ; T. Westerhold ; R. Wilkens ; T. Williams ; P. A. Wilson ; Y. Yamamoto ; S. Yamamoto ; T. Yamazaki ; R. E. Zeebe
    Nature Publishing Group (NPG)
    Published 2012
    Staff View
    Publication Date:
    2012-08-31
    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:
    *Altitude ; Atmosphere/chemistry ; Calcium Carbonate/*analysis ; *Carbon Cycle ; Carbon Dioxide/analysis ; Diatoms/metabolism ; Foraminifera/metabolism ; Geologic Sediments/chemistry ; Global Warming/history/statistics & numerical data ; History, 21st Century ; History, Ancient ; Marine Biology ; Oxygen/metabolism ; Pacific Ocean ; Seawater/*chemistry ; Temperature
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2014-06-14
    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:
    Atlantic Ocean ; *Climate Change ; Mediterranean Sea ; Paleontology ; *Seawater ; *Water Movements
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    ACTON, G. ; BROOM, C. ; WAREHAM, K. ; LAROCHE, J. ; BURNHAM, D. ; FRIEDMAN, C.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1991
    Staff View
    ISSN:
    1365-2036
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    The effects of 100 mg and 200 mg bedtime doses of cimetidine on nocturnal gastric acid secretion were examined in nine healthy subjects in a double blind, placebo controlled, randomised three way crossover study. Treatment was given at 23.00 hours and the gastric contents continually aspirated from midnight until 07.00 hours the following morning. Hourly aliquots were analysed for pH and acid output. Relative to placebo the 100 mg and 200 mg doses of cimetidine respectively increased mean pH by 2.22 and 2.63 units/h (P 〈 0.001) with mean acid output decreasing by 0.95 and 0.98 mmol/h (P 〈 0.001). Whilst mean pH was higher and mean acid output was lower for 200 mg cimetidine compared to 100 mg cimetidine the difference was not statistically significant. Mean hourly pH was consistently above pH 3 for 100% of the time for both doses of cimetidine whereas mean pH failed to reach this value at anytime on placebo.Low doses of cimetidine taken at bedtime effectively reduced nocturnal gastric acid secretion in healthy individuals.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-2036.1991.tb00006.x

    Articles: DFG German National Licenses
  4. 4
    John Acton, G. ; Schopper, P.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0304-4165
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0304-4165(75)90329-3

    Articles: DFG German National Licenses
  5. 5
    Acton, G. John ; Fischer, Willi ; Schopfer, Peter
    Springer
    Published 1980
    Staff View
    ISSN:
    1432-2048
    Keywords:
    Enzyme synthesis ; Lag-phase (enzyme synthesis) ; Phenylalanine ammonia-lyase ; Phytochrome ; Sinapis
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Abstract Mustard seedlings were irradiated with continuous far-red light either with or without far-red preirradiation for between 6 and 44 h. The preirradiation increases the rate of light-mediated phenylalanine ammonia-lyase (EC 4.3.1.5) accumulation in the cotyledons up to 5-fold but does not eliminate the apparent lag-phase of induction which lasts between 30 and 60 min, both with and without a preirradiation. No differential effect of inhibitors presumed to be acting close to gene transcription was observed for plants, whether given a preirradiation or not. These results do not support the notion that two different induction mechanisms are involved in the action of phytochrome on phenylalanine ammonia-lyase synthesis during primary and secondary irradiation. There was however a strong promotive effect of preirradiation on P fr-mediated enzyme accumulation which can be explained by an elevated level of the rate of enzyme synthesis left over from the previous light treatment and a transient increase in the capacity of the system to increase the rate of enzyme synthesis in response to active phytochrome.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00385615

    Articles: DFG German National Licenses
  6. 6
    Acton, G. J. ; Drumm, H. ; Mohr, H.
    Springer
    Published 1974
    Staff View
    ISSN:
    1432-2048
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Summary Density-labelling with deuterium oxide has been used to distinguish preexisting from newly made ascorbate oxidase (EC 1.10.3.3) molecules in cotyledons of the mustard seedling (Sinapis alba L.). The time course of the change in bandwidth of isopycnically banded enzyme, taken together with the accompanying shifts in density, showed that the enzyme was synthesized de novo, was continuously turning over, and had a halt-life of about 1.25 days in darkness. Phytochrome-mediated increases in enzyme activity were accompanied by (i) a faster rate of labelling and (ii) faster progression of the profile to that of a uniformly labelled population, than in dark controls run in parallel. The conclusion is drawn, that phytochrome regulates the rate of synthesis de novo of the protein moiety of ascorbate oxidase in the mustard seedling.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00384004

    Articles: DFG German National Licenses
  7. 7
    Acton, G. J. ; Murray, P. B.
    Springer
    Published 1974
    Staff View
    ISSN:
    1432-2048
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Summary Inhibition of hypocotyl lengthening in Lupinus albus seedlings mediated through the high energy reaction was not reversed by 5 authentic gibberellins nor by extracted lupin “gibberellin-like” compounds. However, inhibition by continuous light was largely overcome by applying IAA (indole-3-acetic acid) to intact seedlings. In contrast, inhibition of lengthening mediated through phytochrome in its low energy mode was reversed by gibberellin. It is concluded that light antagonises hormone-regulated growth.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00388395

    Articles: DFG German National Licenses
  8. 8
    Murray, P. B. ; Acton, G. J.
    Springer
    Published 1974
    Staff View
    ISSN:
    1432-2048
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Summary Six authentic gibberellins marginally promoted hypocotyl lengthening of etiolated lupin seedlings whereas extracted lupin “gibberellin-like” compounds were ineffective. However, dwarfing by AMO-1618 [2′-isopropyl-4′-(trimethyl-ammonium chloride)-5′-methylphenyl piperidine carboxylate] was totally counteracted by co-application with GA3 and partially overcome by extracted lupin “gibberellins”. Meaningful quantities of free extractable and diffusible gibberellins were detected; “bound” gibberellin activity was not found. The time-course of the decline in extractable gibberellin levels during the process of dwarfing showed a significant difference from 6 h after applying AMO-1618. It is suggested that axis growth is dependent on gibberellin in a system normally close to saturation for endogenous growth.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00388394

    Articles: DFG German National Licenses