Concept

Masse atomique

Publications associées (133)

Role of Adsorbed H, C, O, and CO on the Atomic Structure of Free and MgO(100)-Supported Ir-4 Clusters: An ab Initio Study

Zeljko Sljivancanin, Alfonso Baldereschi, Vladan Stevanovic

We applied density functional theory based on ultrasoft pseudopotentials to study the structural properties of Ir-4 clusters both in the gas phase and adsorbed on a MgO(100) surface. To resolve the discrepancy between experimental data which suggest a tetr ...

2010

Submicro- and Nano-Structured Porous Materials for Production of High-Intensity Exotic Radioactive Ion Beams

Sandrina Fernandes

ISOLDE, the CERN Isotope Separator On-line DEvice is a unique source of low energy beams of radioactive isotopes - atomic nuclei that have too many or too few neutrons to be stable. The facility is like a small 'chemical factory', giving the possibility of ...

EPFL2010

Observation of a Charmoniumlike Enhancement in the γγ→ωJ/ψ Process

Olivier Schneider, Chao Wang, Tagir Aushev, Remi Léandre Albert Louvot, Ji Hyun Kim, Jing Li

We report the results of a search for a charmoniumlike state produced in the process gamma gamma -> omega J/psi in the 3.9-4.2 GeV = c(2) mass region. We observe a significant enhancement, which is well described by a resonant shape with mass M = (3915 +/- ...

2010

Assessment of metal-extracellular polymeric substances interactions by asymmetrical flow field-flow fractionation coupled to inductively coupled plasma mass spectrometry

Enrica Alasonati

Extracellular polymeric substances (EPSs) excreted by the bacterium Sinorhizobium meliloti and associated Ca, Cd and Pb were characterised by asymmetrical flow field-flow fractionation coupled with UV spectrophotometry and inductively coupled plasma mass s ...

2010

Alternative depth-averaged models for gravity currents and free shear flows

Anton Schleiss

Two approaches have traditionally been used to describe the widening rate of jets and plumes: the diffusion concept of Prandtl, and the entrainment principle of Morton, Taylor and Turner. The entrainment concept is based on depth-averaged flow scales, and ...

Springer Verlag2010

Search for a Low Mass Particle Decaying into μ^{+}μ^{-} in B^{0}→K^{*0}X and B^{0}→ρ^{0}X at Belle

Olivier Schneider, Aurelio Bay, Mingkui Wang, Chao Wang, Tagir Aushev, Remi Léandre Albert Louvot, Ji Hyun Kim, Xiao Wang, Jing Li

We search for dimuon decays of a low mass particle in the decays B-0 -> K*X-0 and B-0 -> rho X-0 using a data sample of 657 x 10(6)B (B) over bar events collected with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. We find no evidence ...

2010

An ultrasensitive vibrating channel mass sensor based on tunnelling current detection

Maurizio Migliore

We present a new design of a mass sensor capable of detecting mass values in the zeptogram range. The sensor comprises a resonant beam and two gate electrodes used to oscillate the beam at its resonance frequency. The detection method is based on the tunne ...

World Scientific And Engineering Acad And Soc, Ag Loannou Theologou 17-23, 15773 Zographou, Athens, Greece2010

Strategies to prolong the plasma residence time of peptide drugs

Christian Heinis, Lisa Pollaro

Peptides are an attractive class of molecules for the development of therapeutics because they combine unique properties such as high binding affinity, excellent target specificity, low toxicity and a relatively small mass. However, the short in vivo half- ...

2010

Experimental investigation of the spreading of viscoplastic fluids on inclined planes

Christophe Ancey, Steve Cochard

We report experimental results related to the dam-break problem for viscoplastic fluids. Using image processing techniques, we were able to accurately reconstruct the free-surface evolution of fixed volumes of fluid suddenly released a plane. We used Carbo ...

Elsevier2009

Observation of a near-threshold enhancement in the e+e- →Λc+Λc- Cross section using initial-state radiation

Olivier Schneider, Mingkui Wang, Chao Wang, Tagir Aushev, Vladislav Balagura, Sun Hee Kim, Xiao Wang, Jing Li

We report a measurement of the exclusive e+e-→Λc+Λc- cross section as a function of center-of-mass energy near the Λc+Λc- threshold. A clear peak with a significance of 8.2σ is observed in the Λc+Λc- invariant mass distribution just above threshold. With a ...

2008

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