Search Results - (Author, Cooperation:A. Brock)

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  1. 1
    Staff View
    Publication Date:
    2018-04-11
    Publisher:
    National Academy of Sciences
    Print ISSN:
    0027-8424
    Electronic ISSN:
    1091-6490
    Topics:
    Biology
    Medicine
    Natural Sciences in General
    Published by:
    http://www.nasonline.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2012-03-17
    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:
    *Conservation of Natural Resources ; *Environment ; *Government ; *International Cooperation ; Policy ; Technology ; *United Nations
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    D. A. Brock ; T. E. Douglas ; D. C. Queller ; J. E. Strassmann
    Nature Publishing Group (NPG)
    Published 2011
    Staff View
    Publication Date:
    2011-01-21
    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:
    Agriculture ; Bacteria/*growth & development/isolation & purification/metabolism ; Biological Evolution ; Dictyostelium/cytology/*microbiology/*physiology ; Feeding Behavior/physiology ; Reproduction/physiology ; Social Behavior ; Spores/physiology ; *Symbiosis
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Staff View
    Publication Date:
    2011-03-12
    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
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  5. 5
    S. R. Carpenter ; J. J. Cole ; M. L. Pace ; R. Batt ; W. A. Brock ; T. Cline ; J. Coloso ; J. R. Hodgson ; J. F. Kitchell ; D. A. Seekell ; L. Smith ; B. Weidel
    American Association for the Advancement of Science (AAAS)
    Published 2011
    Staff View
    Publication Date:
    2011-04-30
    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:
    Animals ; Bass ; Biomass ; Chlorophyll/analysis ; *Ecosystem ; *Fishes ; *Food Chain ; *Fresh Water/chemistry ; Models, Biological ; Nonlinear Dynamics ; *Phytoplankton ; Population Dynamics ; *Zooplankton
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  6. 6
    J. R. Paterson ; D. C. Garcia-Bellido ; M. S. Lee ; G. A. Brock ; J. B. Jago ; G. D. Edgecombe
    Nature Publishing Group (NPG)
    Published 2011
    Staff View
    Publication Date:
    2011-12-14
    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:
    Animals ; Arthropods/*anatomy & histology/*physiology ; Australia ; *Biological Evolution ; Compound Eye, Arthropod/*anatomy & histology/*physiology ; Extinction, Biological ; *Fossils ; Geologic Sediments ; History, Ancient ; Predatory Behavior ; Vision, Ocular/*physiology
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  7. 7
    Staff View
    Publication Date:
    2018-09-05
    Publisher:
    The American Association for Cancer Research (AACR)
    Print ISSN:
    0008-5472
    Electronic ISSN:
    1538-7445
    Topics:
    Medicine
    Published by:
    http://www.aacr.org/

    Latest Papers from Table of Contents or Articles in Press
  8. 8
    Luty, Brock A. ; McCammon, J. Andrew ; Zhou, Huan-Xiang

    College Park, Md. : American Institute of Physics (AIP)
    Published 1992
    Staff View
    ISSN:
    1089-7690
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Chemistry and Pharmacology
    Notes:
    The algorithm of Northrup, Allison, and McCammon [J. Chem. Phys. 80, 1517 (1984)] for calculating diffusive reaction rates using Brownian dynamics simulations is reexamined. A new method is described in which a time-consuming portion of the algorithm is replaced by an analytical solution. When applied to two illustrative model systems, the new method is found to reduce the computational work by a factor of 2 or more.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.463777

    Articles: DFG German National Licenses
  9. 9
    Mogensen, O. ; Brock, A. ; Nyland, M. Holm

    238 Main Street, Cambridge, Massachusetts 02142, USA : Blackwell Scientific Publications
    Published 1993
    Staff View
    ISSN:
    1525-1438
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    Cancer antigen 125 (CA 125) was measured in 17 patients with ovarian carcinoma before their primary operation and during the first week after surgery. The purpose was to correlate the change in the antigen level with the patient’s survival. Before surgery normal (16–30 U ml−1 CA 125 values were measured in four patients and 13 had increased (75–11.356 U ml−1) antigen concentrations. After surgery the marker increased to 104–931% of the preoperative level in five patients. In 12 patients the post-operative antigen level decreased to 20–96% of the preoperative level. In seven of these patients CA 125 increased without exceeding the preoperative level, after the initial postoperative fall. Thus, the CA 125 level during the first week after primary operation of ovarian cancer patients seems to be influenced by other variable factors besides a reduced amount of tumor tissue. Therefore, an investigation of the correlation between the change in the CA 125 concentration within the first week after surgery and the survival of the patient cannot be performed for the time being.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1046/j.1525-1438.1993.03010054.x

    Articles: DFG German National Licenses
  10. 10
    Luty, Brock A. ; Tironi, Ilario G. ; van Gunsteren, Wilfred F.

    College Park, Md. : American Institute of Physics (AIP)
    Published 1995
    Staff View
    ISSN:
    1089-7690
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Chemistry and Pharmacology
    Notes:
    When simulating a periodic molecular system, lattice sum methods may be used to evaluate the electrostatic interactions without resorting to an unphysical truncation of the potential. In a previous publication, we compared the computational efficiency of the Ewald and Particle-Particle Particle-Mesh (PPPM) lattice-sum methods. Because the PPPM method discretizes the field equations and utilizes the highly efficient fast Fourier transform algorithm, it requires significantly less computational effort than the Ewald method and scales almost linearly with system size. In this paper, we take a more detailed look into the theory behind the lattice-sum methods to clarify the underlying similarities between the Ewald method and the PPPM method. We also investigate the errors introduced by different approximation used in the discretization of the field equations in the PPPM method. © 1995 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.470490

    Articles: DFG German National Licenses
  11. 11
    Gaylarde, P. M. ; Brock, A. P. ; Sarkany, I.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1978
    Staff View
    ISSN:
    1440-0960
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    We have shown that corticosteroids and non-steroid anti-inflammatory agents suppress the increase in skin thickness in response to irritants applied to guinea pig skin. The combination of salicylic acid with corticosteroids and acetyl salicylic acid with hydrocortisone results in an antagonistic reduction of their anti-inflammatory activities. Indomethacin, in contrast, acts synergistically with corticosteroids.Sodium salicylate also suppresses DNA synthesis of human skin in vitro and hydrocortisone sodium succinate is able to abolish this suppression. This result, together with the results of trials on human volunteers, suggests that our findings may be relevant to the use of preparations containing combinations of non-steroid and steroid anti-inflammatory drugs in the clinical situation.The antagonism between salicylates on the one hand and indomethacin and steroids on the other, has been demonstrated by our work on the skin of man and the guinea pigs. A similar effect had been previously described in adjuvant induced arthropathy in the rat. These findings should alert clinicians who use anti-inflammatory agents in various combinations, to the possible reduction of clinical effect due to antagonism between salicylates and other anti-inflammatory drugs.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1440-0960.1978.tb00188.x

    Articles: DFG German National Licenses
  12. 12
    Staff View
    ISSN:
    1546-170X
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Medicine
    Notes:
    [Auszug] It has been shown that bone marrow–derived stem cells can form a major fraction of the tumor endothelium in mouse tumors. To determine the role of such cells in human tumor angiogenesis, we studied six individuals who developed cancers after bone marrow transplantation with donor cells ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/nm1200

    Articles: DFG German National Licenses
  13. 13
    BROCK, A. ; MCFADDEN, P. L. ; PARTRIDGE, T. C.

    [s.l.] : Nature Publishing Group
    Published 1977
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] Samples were collected at the Swartkrans and Makapansgat Limeworks sites. Both sites were described by Brain1 who has subsequently revised his interpretation of Swartkrans2 and in conjuction with Butzer has suggested new nomenclature2,3. Detailed mapping at Makapansgat by one of us (T.C.P.) has led ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/266249a0

    Articles: DFG German National Licenses
  14. 14
    Hillhouse, J. W. ; Ndombi, J. W. M. ; Cox, A. ; Brock, A.

    [s.l.] : Nature Publishing Group
    Published 1977
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] The magnetostratigraphy of the hominid-bearing sediments exposed east of Lake Turkana has been strengthened by new palaeomagnetic results. Ages obtained from several tuffs by the 40Ar/39Ar method suggest an approxmate match between the observed magnetozones and the ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/265411a0

    Articles: DFG German National Licenses
  15. 15
    BROCK, A.

    [s.l.] : Nature Publishing Group
    Published 1968
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] Table 1 Code Rock type Declination, D Reference A Kenya trachyte 12 ±7 4 B Olduvai basalt 5±1 5 C Olduvai trachyandesite 359 ±3 6 D Nairobi basalts 359 + 5 3,7 E Rungwe lavas 16 ±16 4 F Kerichwa tuffs 12 + 11 ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/219599b0

    Articles: DFG German National Licenses
  16. 16
    WOOD, G. C. ; BROCK, A. J.

    [s.l.] : Nature Publishing Group
    Published 1966
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] THE elegant method of Heine and Pryor1, namely measurement of the impedance of a barrier-type anodic oxide film during uniform thinning in a passivating alkaline chromate solution, has been used to obtain the a.c. resistivity profiles through such films formed on aluminium and its alloys in various ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/209773a0

    Articles: DFG German National Licenses
  17. 17
    McFadden, P.L. ; Brock, A. ; Partridge, T.C.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0012-821X
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Geosciences
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0012-821X(79)90076-1

    Articles: DFG German National Licenses
  18. 18
    Brock, A. ; Hay, R.L.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0012-821X
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Geosciences
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0012-821X(76)90032-7

    Articles: DFG German National Licenses
  19. 19
    McElhinny, M.W. ; Brock, A.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0012-821X
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Geosciences
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0012-821X(75)90044-8

    Articles: DFG German National Licenses
  20. 20
    Conroy, J.J. ; Brock, A.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0012-821X
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Geosciences
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0012-821X(89)90036-8

    Articles: DFG German National Licenses