Publications associées à Carbone 14

The Pristine survey IV: approaching the Galactic metallicity floor with the discovery of an ultra-metal-poor star

Pascale Jablonka, Carmela Lardo, Nicolas Lawrence Etienne Longeard, Marc Gentile, Silvia Martin de Nicolas Agut

The early Universe presented a star formation environment that was almost devoid of heavy elements. The lowest metallicity stars thus provide a unique window into the earliest Galactic stages, but are exceedingly rare and difficult to find. Here, we presen ...

OXFORD UNIV PRESS2018

Photochemistry of 1- and 2-Naphthols and their Water Clusters: The Role of 1ππ*(La) Mediated Hydrogen Transfer to Carbon Atoms

Anne-Clémence Corminboeuf, Antonio Prlj

The computational analysis of isomer- and conformer- dependent photochemistry of 1- and 2-naphthols and their microsolvated water clusters is motivated by their very different excited state reactivity. We present evidence that 1- and 2-naphthol follow dist ...

Wiley-V C H Verlag Gmbh2017

Observation of the decay -> J/psi K (+) K (-) pi (+)

Olivier Schneider, Aurelio Bay, Yiming Li, Guido Haefeli, Frédéric Blanc, Christoph Frei, Tatsuya Nakada, Julien Rouvinet, Barinjaka Rakotomiaramanana, Raluca Anca Muresan, Michel De Cian, Johan Luisier, Luca Pescatore, Jian Wang, Yi Zhang, Lei Zhang, Jessica Prisciandaro, Mark Tobin, Minh Tâm Tran, Niko Neufeld, Matthew Needham, Marc-Olivier Bettler, Greig Alan Cowan, Maurizio Martinelli, Vladislav Balagura, Donal Patrick Hill, Cédric Potterat, Liang Sun, Pietro Marino, Jean Wicht, Ilya Komarov, Bastien Luca Muster, Frédéric Guillaume Dupertuis, Pierre Jaton, Joël Bressieux, Songmei Wu, Hans Dijkstra, Gerhard Raven, Peter Clarke, Frédéric Teubert, Giovanni Carboni, Victor Coco, , , ,

Arene ruthenium dichloro complexes containing isonicotinic ester ligands: Synthesis, molecular structure and cytotoxicity

Paul Joseph Dyson, Olivier Pierre Zava

A series of p-cymene ruthenium dichloro complexes containing isonicotinic ester ligands, [(arene) RuCl2NC5H4-4-COO-C6H4-p-O-(CH2)(n)-CH3] (n = 1: 1, n = 3: 2, n = 5: 3, n = 7:4, n = 9: 5, n = 11: 6, n = 13: 7, n = 15: 8), were prepared from p-cymene ruthen ...

Elsevier2013

Probing the origin of cosmic rays with extremely high energy neutrinos using the IceCube Observatory

Shirit Cohen, Mathieu Ribordy, Matthias Wolf, Mark Tobin, Sofia Vallecorsa, Xiaoxia Bai

We have searched for extremely high energy neutrinos using data taken with the IceCube detector between May 2010 and May 2012. Two neutrino-induced particle shower events with energies around 1 PeV were observed, as reported previously. In this work, we in ...

American Physical Society2013

Uniform broadband excitation of crystallites in rotating solids using interleaved sequences of delays alternating with nutation

Geoffrey Bodenhausen, Simone Ulzega, Marc Anthony Caporini

In solids that are spinning about the magic angle, trains of short pulses in the manner of Delays Alternating with Nutations for Tailored Excitation (DANTE) allow one to improve the efficiency of the excitation of magnetization compared to rectangular puls ...

Academic Press Inc - Elsevier Science2012

Broadband excitation and indirect detection of nitrogen-14 in rotating solids using Delays Alternating with Nutation (DANTE)

Geoffrey Bodenhausen, Simone Ulzega, Marc Anthony Caporini

A train of short rotor-synchronized pulses in the manner of Delays Alternating with Nutations for Tailored Excitation (DANTE) applied to nitrogen-14 nuclei (I = 1) in samples spinning at the magic angle at high frequencies (typically nu(rot) = 62.5 kHz so ...

Academic Press Inc - Elsevier Science2011

Acoustic resonant sensor for ultra high energy neutrino detection

Mathieu Ribordy, Reto Frei

The characterization of the cosmogenic neutrino flux would give insights into cosmological source evolution, source spectra and composition at injection, through the partial recovery of the degraded information carried by the ultra high energy cosmic rays. ...

2011

Spectral Broadening of Characteristic gamma-Ray Emission Peaks from C-12(He-3, p gamma)N-14 Reactions in Fusion Plasmas

Patrick Blanchard, Gabriele Grosso

The spectral broadening of characteristic gamma-ray emission peaks from the reaction C-12(He-3, p gamma)N-14 was measured in D(He-3) plasmas of the JET tokamak with ion cyclotron resonance heating tuned to the fundamental harmonic of He-3. Intensities and ...

2011

Interaction between BaCO3 and OPC/BFS composite cements at 20 degrees C and 60 degrees C

Emmanuel Gallucci

A BaCO3 slurry, containing radioactive C-14, is produced during the reprocessing of spent nuclear fuel. This slurry is encapsulated in a Portland-blastfurnace slag composite cement. The effect of BaCO3 on the hydration of OPC and Portland-blastfurnace slag ...

Pergamon-Elsevier Science Ltd2011

First search for extremely high energy cosmogenic neutrinos with the IceCube Neutrino Observatory

Shirit Cohen, Mathieu Ribordy, Levent Demirörs, Xiaoxia Bai

We report on the results of the search for extremely-high energy neutrinos with energies above 10(7) GeV obtained with the partially (similar to 30%) constructed IceCube in 2007. From the absence of signal events in the sample of 242.1 days of effective li ...

American Physical Society2010

Nanoscale triboactivity: The response of Mo–Se–C coatings to sliding

Silviu Cosmin Sandu

Mo–Se–C films were deposited by sputtering from a carbon target with pellets of MoSe2. In addition to the standard evaluation of their chemical composition, structure, morphology, hardness and cohesion/adhesion, the core objective of this paper was to anal ...

2008

Erosion and deposition in the JET MkII-SRP divertor

Richard Pitts

Carbon-13 labelled methane was injected into the outer divertor during a series of H-mode discharges on the last day of operations with the JET MkII-SRP divertor. Tiles from around the vessel were removed during the subsequent shutdown and surface deposits ...

2007

Complexes of a transition metal with 2,2-bipyridine ligands substituted by at least one ammonium alkyl radical, process for their fabrication and their use as redox mediator

Michael Graetzel, Shaik Mohammed Zakeeruddin

Complex of general formula I in which R1, R2 and R3, which may be identical or different, represent separately a linear or branched alkyl radical of 1 to 5 carbon atoms, or, together with the nitrogen atom to which they are attached, a heterocyclic ...

(Asulab S.A., Switz.).1994