L'Evolution comparée des Sables

Etude comparée des performances de SVM multi-classes en prédiction de la structure secondaire des protéines

Résumé. Les SVM bi-classes, introduites en bioinformatique à la fin des années 90, font aujourd’hui référence pour de nombreux problèmes de traitement de séquences biologiques. Les SVM multi-classes, de conception plus récente, sont progressivement appliquées à ces problèmes, singulièrement en biologie structurale prédictive. Dans cet article, nous proposons une étude comparée des performances ...

Increase in finishers and improvement of performance of masters runners in the Marathon des Sables

AIM The aim of the study was to examine finisher and performance trends of ultrarunners in the Marathon des Sables, the world's largest multistage ultramarathon. METHODS The age and running speed was analyzed for 6945 finishes of 909 women and 6036 men between 2003 and 2012 at the Marathon des Sables covering about 240 km in the Moroccan desert. RESULTS The number of finishes increased sign...

Multivitamin-mineral supplementation prevents lipid peroxidation during "the Marathon des Sables".

OBJECTIVE We investigated the effect of a moderate mutivitamin and mineral supplementation containing mainly vitamin C (150.0 mg.day(-1)), vitamin E (24.0 mg.day(-1)) and beta-carotene (4.8 mg.day(-1)) prior to and during an extreme running competition -the Marathon des Sables (MDS)- that consisted of six long races in the desert. METHODS Seventeen athletes participated in our double blind, p...

Valeur pratique comparée des réactions d'agglutination, de conglutination directe, d'hémagglutination polyosidique et protéinique pour le diagnostic de la peste

Evolution of Deformation Fields in Ploughing of Sand Evolution Des Champs De Deformation Lors De La Decoupe Othogonale De Sables

This paper reports on an experimental study on the ploughing or orthogonal cutting in sand. Plane strain cutting or ploughing experiments were carried out on model Ottawa sand while being imaged at high resolution. The images obtained were further processed using image analysis and the evolution of the velocity and deformation fields were obtained from these analysis. The deformation fields sho...