Search Results - (Author, Cooperation:N. Negre)

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  1. 1
    Staff View
    Publication Date:
    2011-03-25
    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 ; Chromatin/metabolism ; Chromatin Assembly and Disassembly ; Chromatin Immunoprecipitation ; Drosophila melanogaster/*genetics ; Enhancer Elements, Genetic/genetics ; Genome, Insect/*genetics ; Histone Deacetylases/metabolism ; Insulator Elements/genetics ; *Molecular Sequence Annotation ; Promoter Regions, Genetic/genetics ; Regulatory Sequences, Nucleic Acid/*genetics ; Reproducibility of Results ; Silencer Elements, Transcriptional/genetics ; Transcription Factors/metabolism
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Dubourg, S. ; Negre, N.

    [S.l.] : American Institute of Physics (AIP)
    Published 2000
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We have sputter deposited NiO–Co bilayers on MgO (001) substrates. NiO grows epitaxially on MgO at 800 °C and subsequently room temperature deposited Co films have a fcc crystal structure in epitaxy with the oxide underlayer. Bias fields higher than 700 Oe at 5 K were reported. Polar Kerr effect measurements evidence saturation fields for perpendicular magnetization up to 15 T at low temperature, proof for a strong NiO–Co exchange interaction. The formation of a domain wall in the Co layer is a possible mechanism for such large saturation fields. © 2000 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.373208

    Articles: DFG German National Licenses
  3. 3
    Staff View
    ISSN:
    1434-6036
    Keywords:
    PACS. 64.60.My Metastable phases - 64.60.Qb Nucleation - 05.70.Ln Nonequilibrium and irreversible thermodynamics - 64.60.-i General studies of phase transitions - 74.25.Bt Thermodynamic properties
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract: We report the first study of the effect of a high pulsed magnetic field on a spin transition complex in the solid state. The high spin fraction was determined by optical reflectivity. Sizeable effects are observed for the well-known spin transition solid Fe(Phen)2(NCS)2. In the hysteresis loop temperature range, an increase in the HS fraction is obtained, with an irreversible (reversible) character in the ascending (descending) branch of the loop. The time dependence of the HS fraction provides information on the kinetics of the spin-crossover process at the spin transition.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s100510050057

    Articles: DFG German National Licenses
  4. 4
    Staff View
    ISSN:
    1090-6487
    Keywords:
    73.50.Jt ; 81.05.Ys ; 61.43.Er
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract It is established that the Hall effect in Fe/SiO2 nanocomposite films in the activational tunneling conduction range is anomalous, i.e., the Hall resistivity ρh is proportional to the magnetization and is due to the spin-orbit interaction. The parametric coupling of the Hall and longitudinal (ρxx) resistances ρh ∝ ρ xx m (with temperature as the parameter) is characterized by a much lower value of the exponent m than in a uniform ferromagnetic metal. This circumstance is attributed to the characteristic features of the Hall effect mechanism in the hopping regime — in our case, the interference of the amplitudes of tunneling transitions in a set of three granules.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1134/1.568135

    Articles: DFG German National Licenses