Conesa del Valle Z.,CERN |
Conesa del Valle Z.,CNRS Hubert Curien Multi-disciplinary Institute
Nuclear Physics A | Year: 2013
Heavy-flavor hadron production studies in Pb-Pb collisions at √sNN=2.76TeV with the 2010 and 2011 data samples are presented. The measurements are performed with the ALICE detector in various decay channels and in a wide kinematic range. Heavy-flavor hadrons exhibit a suppression in the most central Pb-Pb collisions that amounts to a factor 3-5 for p T ~ 8-10 GeV/c. The second harmonic of the azimuthal distribution Fourier decomposition, v2, is non-zero for non-central collisions at intermediate p T (~3 GeV/c). © 2013 CERN.
Pradier T.,CNRS Hubert Curien Multi-disciplinary Institute
Classical and Quantum Gravity | Year: 2010
ANTARES is currently the largest neutrino telescope operating in the Northern Hemisphere, aiming at the detection of high-energy neutrinos from astrophysical sources. Such observations would provide important clues about the processes at work in those compact and energetic sources, and possibly help solve the puzzle of ultra-high-energy cosmic rays. In this context, ANTARES is developing several programs to improve its capabilities of revealing possible spatial and/or temporal correlations of neutrinos with other cosmicmessengers: photons, cosmic rays and gravitational waves. The neutrino telescope and its most recent results are presented, together with these multi-messenger programs. © 2010 IOP Publishing Ltd.
Hippolyte B.,CNRS Hubert Curien Multi-disciplinary Institute
Acta Physica Polonica B | Year: 2012
Strange quark and particle production is studied at the LHC with unprecedented high beam energies in both heavy-ion and proton-proton collisions: on the one hand, strangeness is used for investigating chemical equilibration and bulk properties; on the other hand, strange particles contribute to probe different kinematical domains, from the one where collective phenomena are at play up to the region dominated by pQCD-calculable processes. We highlight the suitability of the ALICE experiment for this topic, presenting our latest measurements and comparing them to models.
Billard I.,CNRS Hubert Curien Multi-disciplinary Institute
Handbook on the Physics and Chemistry of Rare Earths | Year: 2013
Ionic Liquids are of great interest in all fields of chemistry and material science. Apart from their "green" properties, their radioresistance and fantastic chemical versatility offer a new playground to nuclear chemists and others in view of liquid/liquid extraction of RE and actinides. Following a brief summary of RE and An liquid/liquid extraction by use of molecular solvents, the author reviews and discusses the main properties of ionic liquids that are of importance to liquid/liquid extraction. Then, the various ways ionic liquids are used for the extraction/separation of RE and An are critically reviewed and discussed. Focus is on mechanism and highlight is put on differences between ionic liquids and molecular solvents. © 2013 Elsevier B.V..
Thierry B.,French National Center for Scientific Research |
Thierry B.,CNRS Hubert Curien Multi-disciplinary Institute
Philosophical Transactions of the Royal Society B: Biological Sciences | Year: 2013
The evolutionary study of social systems in non-human primates has long been focused on ecological determinants. The predictive value of socioecological models remains quite low, however, in particular because such equilibrium models cannot integrate the course of history. The use of phylogenetic methods indicates that many patterns of primate societies have been conserved throughout evolutionary history. For example, the study of social relations in macaques revealed that their social systems are made of sets of correlated behavioural traits. Some macaque species are portrayed by marked social intolerance, a steep dominance gradient and strong nepotism, whereas others display a higher level of social tolerance, relaxed dominance and a weaker influence of kinship. Linkages between behavioural traits occur at different levels of organization, and act as constraints that limit evolutionary responses to external pressures. Whereas these constraints can exert strong stabilizing selection that opposes the potential changes required by the ecological environment, selective mechanisms may have the potential to switch thewhole social system from one state to another by acting primarily on some key behavioural traits that could work as pacemakers. © 2013 The Author(s) Published by the Royal Society. All rights reserved.