56 research outputs found
Bio++: Efficient Extensible Libraries and Tools for Computational Molecular Evolution
Efficient algorithms and programs for the analysis of the ever-growing amount of biological sequence data are strongly needed in the genomics era. The pace at which new data and methodologies are generated calls for the use of pre-existing, optimizedâyet extensibleâcode, typically distributed as libraries or packages. This motivated the Bio++ project, aiming at developing a set of C++ libraries for sequence analysis, phylogenetics, population genetics, and molecular evolution. The main attractiveness of Bio++ is the extensibility and reusability of its components through its object-oriented design, without compromising the computer-efficiency of the underlying methods. We present here the second major release of the libraries, which provides an extended set of classes and methods. These extensions notably provide built-in access to sequence databases and new data structures for handling and manipulating sequences from the omics era, such as multiple genome alignments and sequencing reads libraries. More complex models of sequence evolution, such as mixture models and generic n-tuples alphabets, are also included
First measurement of Ωc0 production in pp collisions at s=13 TeV
The inclusive production of the charmâstrange baryon 0 c is measured for the first time via its hadronic â decay into âÏ+ at midrapidity (|y| <0.5) in protonâproton (pp) collisions at the centre-of-mass energy s =13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 2 < pT < 12 GeV/c. The pT dependence of the 0 c-baryon production relative to the prompt D0-meson and to the prompt 0 c-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured pT interval, the ratio of the pT-integrated cross sections of 0 c and prompt + c baryons multiplied by the âÏ+ branching ratio is found to be larger by a factor of about 20 with a significance of about 4Ï when compared to e+eâ collisions
Ultrafast magnetism I: Proceedings of the international conference umc2013 strasbourg, france, october 28th â november 1st
Spin dynamics and exchange interactions from the first- and second-principles calculations
RENORMALIZATION EFFECTS OF THE POLARITON DISPERSION
La dispersion des polaritons est étudiée expérimentalement dans le chlorure cuivreux lorsque le cristal est éclairé par une source laser intense. Des effets de renormalisation dus à l'absorption de deux photons apparaissent au voisinage de la résonance biexcitonique.The polariton dispersion is investigated experimentally in cuprous chloride when the crystal is excited with a high intensity laser source. Renormalization effects due to two-photon absorption occur near the biexciton resonance
Ultrafast magnetism I: Proceedings of the international conference umc2013 strasbourg, france, october 28th â november 1st
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