Search results for "Emplacement"
showing 5 items of 5 documents
Quels sont les effets de la pression exercée par les analystes financiers ? Le cas Carrefour
2010
International audience; L'étude du remplacement du dirigeant emblématique de l'entreprise Carrefour, au début de l'année 2005, permet d'illustrer le rôle disciplinaire joué par les analystes financiers, ainsi que les effets pervers résultant de la pression exercée par ces derniers sur la qualité des états financiers. En effet, il apparaît que l'ancien dirigeant a géré les résultats à la hausse au cours des deux années précédentes, pour éviter d'annoncer une « mauvaise surprise » (un bénéfice de l'exercice inférieur aux bénéfices prévus par les analystes), alors que le nouveau dirigeant a eu tendance à « nettoyer » les comptes dès sa prise de fonction.
Numerical modelling of magma dynamics coupled to tectonic deformation of lithosphere and crust
2013
Many unresolved questions in geodynamics revolve around the physical behaviour of the two-phase system of a silicate melt percolating through and interacting with a tectonically deforming host rock. Well-accepted equations exist to describe the physics of such systems and several previous studies have successfully implemented various forms of these equations in numerical models. To date, most such models of magma dynamics have focused on mantle flow problems and therefore employed viscous creep rheologies suitable to describe the deformation properties of mantle rock under high temperatures and pressures. However, the use of such rheologies is not appropriate to model melt extraction above …
Comparison of two delayed strategies for renal replacement therapy initiation for severe acute kidney injury (AKIKI 2): a multicentre, open-label, ra…
2021
International audience; BACKGROUND: Delaying renal replacement therapy (RRT) for some time in critically ill patients with severe acute kidney injury and no severe complication is safe and allows optimisation of the use of medical devices. Major uncertainty remains concerning the duration for which RRT can be postponed without risk. Our aim was to test the hypothesis that a more-delayed initiation strategy would result in more RRT-free days, compared with a delayed strategy. METHODS: This was an unmasked, multicentre, prospective, open-label, randomised, controlled trial done in 39 intensive care units in France. We monitored critically ill patients with severe acute kidney injury (defined …
Unravelling textural heterogeneity in obsidian:shear-induced outgassing in the Rocche Rosse flow
2016
Obsidian flow emplacement is a complex and understudied aspect of silicic volcanism. Of particular importance is the question of how highly viscous magma can lose sufficient gas in order to erupt effusively as a lava flow. Using an array of methods we study the extreme textural heterogeneity of the Rocche Rosse obsidian flow in Lipari, a 2. km long, 100. m thick, ~. 800. year old lava flow, with respect to outgassing and emplacement mechanisms. 2D and 3D vesicle analyses and density measurements are used to classify the lava into four textural types: 'glassy' obsidian (<. 15% vesicles), 'pumiceous' lava (>. 40% vesicles), high aspect ratio, 'shear banded' lava (20-40% vesicles) and lo…