The social, political and material constitution of low-carbonenergy transitions in urban areas: a socio-technical and socio-spatial comparisonof Alberta (Canada) and Ile-de-France (France)

Cities emit approximately 70% of the greenhouse gas emissions responsible for climate change. It is therefore important to study how urban energy infrastructures can be transformed to lower carbon emissions. But this transformation is not simple for two reasons: (1) it involved variousactors with conflicting interests and visions on what the energy transition should be, […]

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Holographie acoustique en champ proche en régime transitoire et application à la détection de défauts dans les plaques

L’holographie acoustique en champ proche (Nearfield Acoustical Holography – NAH) est une technique d’imagerie acoustique permettant de visualiser un champ sonore dans l’espace tridimensionnel. Son fonctionnement repose sur l’acquisition du champ de pression acoustique à l’aide d’une matrice de microphones située dans le champ proche de la source. Le signal obtenu fait office de condition […]

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Experimental and Computational Investigationson Catalytic Mechanism of Ethylene Polymerization over Ziegler-Natta Catalysts

Magnesium chloride (MgCI 2) is a commercial catalyst important for the production of polyolefin material. Although magnesium chloride has been used for over 50 years, the active site is still not entirely known. This research aims to learn more about the active site. The formation of defective magnesium chloride surfaces acts with Ziegler-Natta catalysts and […]

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Integrating physics and geology for an improved understanding of rock deformation

The relationship between the structure of rocks near the Earth’s surface and their geophysical properties is little understood. Rock samples from a large, exposed fault will be collected from Serifos, Greece, a region strongly affected by earthquakes and recent tectonism. These samples preserve varying degrees of deformation and structural complexity. The amountof deformation affects the […]

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The luminescence of cavitation bubble generated by spark discharge in water

Cavitation bubble can be generated by ultrasound, laser or spark discharge underwater. It has good potential in the application of medical treatment, environmental treatment and surface cleaning. When the bubble collapse, the vapor inside will be compressed quickly and the temperature will rise to several thousand Kelvin, even reach ten of thousand Kelvin, and the […]

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Catalytic Reforming, Hydrogenation, and Decarboxylation of Unsaturated Fatty Acid Esters over Non-noble Metal Catalyst

Biodiesel refers to a vegetable oil or animal fat based diesel fuel consisting of saturated and unsaturated long-chain alkyl esters. Low value biodiesel has been developed on a commercial scale, however the application is limited. The conversion of biodiesel to high value C8-16 n-alkanes currently uses metal catalysts (Pt/C), which is an expensive technique. Designing […]

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Nouveaux matériaux vitreux pour l’optique guidée à transparence étendue jusqu’au moyen infrarouge

Le projet proposé consiste en l’étude de nouveaux verres constitués d’oxydes dits lourds tels que l’oxyde de gallium, de germanium ou encore de bismuth pour des applications spéciales en optique et en photonique. Ces matériaux doivent être transparents dans le moyen infrarouge, au-delà des verres traditionnels qui sont par exemple employés dans le domaine des […]

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