La modélisation et la simulation numérique d’écoulements des fluides en milieux poreuxréactifs interviennent dans de nombreuses applications énergétiques et environnementales. Nousnous sommes focalisés dans de ce travail sur le stockage des déchets ménagers pour la production debiogaz. Dans cette thèse nous présentons et étudions, théoriquement et ...
In Engineer-To-Order (ETO) industrial contexts, decision-making about which systems to offer for sales or which subsystems to integrate into the systems for sales is based on various performance indicators. However, the lack of relevant information to evaluate these indicators challenges the decision-making process. In this article, to face this is...
The surface quality of the parts is one of the major objectives of the use of the high-speed milling (HSM). Tool path interpolations affect the machining operation of complex parts in HSM. In this paper, the influence of the different types of interpolation of the computer-aided manufacturing (CAM) on the surface roughness in the HSM machining of f...
Successful bidding involves defining relevant technical bid solutions that conform to the customers' requirements, then selecting the most interesting one for the commercial offer. However, in Engineer-To-Order (ETO) industrial contexts, this selection process is complicated by issues of imprecision, uncertainty and confidence regarding the values ...
Dans ce travail de recherche, des monolithes en silice présentant une très grande porosité (83 %), une double distribution de taille de pores (des macropores de diamètre 20 μm et des méseopores de diamètre 20 nm) et une très grande surface spécifique (370 m2 g-1) ont été utilisés comme supports pour immobiliser une laccase de Trametes versicolor pa...
Oxide dispersion strengthened (ODS) ferritic-martensitic steels are advanced high-performance structural materials for next generation nuclear and fusion facilities. An important issue for operation performance of these steels is their resistance to detrimental effects of transmutation gases, helium and hydrogen, with a particular attention to the ...
The export of riverine dissolved organic carbon (DOC) to the oceans is determinant in carbon exchanges of the estuaries and oceanic food webs. Past research returned a global DOC export around 160–450 TgC.yr−1 by using complex process-based models or yearly average estimates that could have been misjudged. In this study, we try to understand the co...
We propose the modeling of hysteresis nonlinearities in a piezoelectric material-based tube actuator classically employed in precise positioning applications under different sur-rounding temperatures. Beyond the voltage-to-displacement hysteresis nonlinearities they exhibit, these actuators are sensitive to the surrounding temperature. Therefore, c...
Des contacteurs membranaires à fibres creuses (HFMC) ont été utilisés pour la capture du CO2 des courants gazeux. Pour ce faire, des liquides ioniques à température ambiante (RTIL) et des liquides ioniques d'acides aminés (AAIL) à base d'imidazolium ont été utilisés comme absorbants, avec une double approche expérimentale et de modélisation. La sol...
The use of titanium alloys has become more widespread in recent years. Regardless, although research work is enhancing, productivity levels remain low. Several alternatives have been considered and one of the techniques is envisaged is heating assistance. The objective is then to increase the temperature locally in order to benefit from thermal sof...
