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Publications associées (12)

Steadily Moving Semi-Infinite Hydraulic Fracture in a Poroelastic Media

Brice Tanguy Alphonse Lecampion, Andreas Möri

Linear elastic fracture mechanics has been widely used to describe the propagation of hydraulic fractures in rocks [1]. The embedding material is generally considered to be elastic and permeable, but the fluid exchange between the fracture and the media is ...

2022

Strategies for faster impregnation in melt thermoplastic resin transfer molding process

Damiano Salvatori

Continuous fiber thermoplastic composites are potential substitutes of steel in structural automotive components, since they combine fiber strength and rigidity with ductility, potential recyclability and low density of the thermoplastic (TP) matrix. Resin ...

EPFL2018

Evaporation from a shallow water table: Diurnal dynamics of water and heat at the surface of drying sand

Marc Parlange, Ivan Lunati, Chad Higgins, Scott W. Tyler

Accurate estimates of water losses by evaporation from shallow water tables are important for hydrological, agricultural, and climatic purposes. An experiment was conducted in a weighing lysimeter to characterize the diurnal dynamics of evaporation under n ...

Amer Geophysical Union2013

La0.5Sr0.5Fe1-yMyO3-[delta] (M = Ti, Ta) perovskite oxides for oxygen separation membranes

Defne Bayraktar

Mixed ionic electronic conducting perovskite materials have been receiving considerable attention for the application of oxygen separation membranes. These membranes have potential to be integrated in industrial processes that require pure oxygen and to pr ...

EPFL2008

Intermittent oxygen flux from the interior into the bottom boundary of lakes as observed by eddy correlation

Alfred Johny Wüest, Bernhard Wehrli

Turbulent oxygen transport from the overlying stratified water column into the bottom boundary layer (BBL) on the slope of a medium-sized lake was investigated using the eddy correlation (EC) technique. The seicheinduced oscillatory flow of the BBL, with a ...

Amer Soc Limnology Oceanography2008

A gel probe equilibrium sampler for measuring arsenic porewater profiles and sorption gradients in sediments: I. Laboratory development

Janet Gordon Hering

A gel probe equilibrium sampler has been developed to study arsenic (As) geochemistry and sorption behavior in sediment porewater. The gels consist of a hydrated polyacrylamide polymer, which has a 92% water content. Two types of gels were used in this stu ...

2008

Oxygen transport in La0.5Sr0.5Fe1−yTiyO3−δ (y=0.0, 0.2) membranes

Jan Van Herle, Stefan Diethelm, Defne Bayraktar

The influence of partial substitution of Fe with Ti on the oxygen transport properties of La1−xSrxFeO3 membranes was investigated in view of their application for oxygen separation. Samples of composition La0.5Sr0.5Fe1−yTiyO3−δ(y=0, 0.2) were prepared and ...

Springer Verlag2006

Oxygen transport in La0.5Sr0.5Fe1-yTi yO3-δ (y=0.0,0.2) membranes

Jan Van Herle, Stefan Diethelm, Defne Bayraktar

The influence of partial substitution of Fe with Ti on the oxygen transport properties of La1- xSrxFeO3 membranes was investigated in view of their application for oxygen separation. Samples of composition La0.5Sr0.5 Fe1-yTiyO3-δ (y = 0, 0.2) were prepared ...

2006

Oxygen transport through dense La0.6Sr0.4Fe0.8Co0.2O3-d perovskite-type permeation membranes

Jan Van Herle, Stefan Diethelm

In this study, we examine the parameters that govern the overall oxygen flux through a permeation membrane. The chemical diffusion (D) and the surface exchange (k) coefficients for oxygen in La0.6Sr0.4Fe0.8Co0.2O3-d were determined as a function of tempera ...

2004

Simultaneous determination of chemical diffusion and surface exchange coefficients of oxygen by the potential step technique

Jan Van Herle, Stefan Diethelm, Alexandre Closset

Oxygen diffusion is treated in a dense electronically conducting cobaltate pellet blocked ionically on one surface, electronically on the other, and sealed on its cylindrical periphery. A procedure is developed for extracting the chemical diffusion and sur ...

1999

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