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51 papers · 1 filter
Granular spirals on erodible sand bed submitted to a circular fluid motion
H. Caps, N. Vandewalle
An experimental study of a granular surface submitted to a circular fluid motion is presented. The appearance of an instability along the sand-water interface is observed beyond a…
Real numbers having ultimately periodic representations in abstract numeration systems
P. Lecomte, M. Rigo
Using a genealogically ordered infinite regular language, we know how to represent an interval of R. Numbers having an ultimately periodic representation play a special role in cla…
An X-ray investigation of the NGC 346 field in the SMC (2) : the field population
Y. Naze, J. M. Hartwell, I. R. Stevens +5
We present results from a Chandra observation of the NGC346 cluster, which is the ionizing source of N66, the most luminous HII region and the largest star formation region in the…
Scalar and Tensor Force Contribution to the Nucleon-Nucleon Interaction Within a Chiral Constituent Quark Model
D. Bartz
The nucleon-nucleon problem is studied as a six-quark system in a nonrelativistic chiral constituent quark model where the Hamiltonian contains a linear confinement and a pseudosca…
Block to granular-like transition in dense bubble flows
N. Vandewalle, S. Trabelsi, H. Caps
We have experimentally investigated 2-dimensional dense bubble flows underneath inclined planes. Velocity profiles and velocity fluctuations have been measured. A broad second-orde…
Pion Structure Function and Violation of the Momentum Sum Rule
J. P. Lansberg, F. Bissey, J. R. Cudell +3
We present a method to evaluate the pion structure functions from a box diagram calculation. Pion and constituent quark fields are coupled through the simplest pseudoscalar couplin…