Numerical study of the force network in a random granular packing during compaction

Poster (2006)

Etude des protéines totales et de l’ADN issus des feuilles de Moricandia arvensis collectées de quatre régions du sud tunisien

in Revue des Régions Arides (2006)

A partir des protéines et de l'ADN extraits des feuilles de Moricandia arvensis, collectées de quatre régions du sud tunisien, nous avons étudié la variabilité de cette plante reconnue pour ses vertus ... [more ▼]

A partir des protéines et de l'ADN extraits des feuilles de Moricandia arvensis, collectées de quatre régions du sud tunisien, nous avons étudié la variabilité de cette plante reconnue pour ses vertus médicinales. Nous avons analysé d’une part les protéines totales extraites puis séparées par la technique SDS-PAGE. Cette méthode a révélé un degré de similitude très remarquable entre les plantes issues des quatre régions et qui varie entre 0.77 et 0.91. Nous avons effectué d’autre part, une analyse de la variabilité génétique par l’amplification aléatoire de l'ADN polymorphe par la technique PCR-RAPD en utilisant trois amorces différentes. Nous avons remarqué que la similitude est plus accentuée entre les plantes collectées des régions du Sud Ouest, avec un degré de similitude pouvant atteindre 100%. Celles issues du Sud Est présentent un degré de similitude de 66%. [less ▲]

Investigation on genotype by environment interaction for milk yield of Holstein cows in Luxembourg and Tunisia

in INTERBULL Bulletin (2006), 35

Compte-rendu de l'ouvrage de R. Veit : Das Buch der Fieber des Isaac Israeli und seine Bedeutung im Lateinischen Westen. Ein Beitrag zur Rezeption arabischer Wissenschaft im Abendland

in Archives Internationales d'Histoire des Sciences (2006), 56(156-157), 415-417

L’injustice de la responsabilisation

Conference (2006)

L'infusion intraveineuse de lidocaine réduit les besoins en propofol lors d'une AIVOC associant remifentanil et propofol.

in Annales Françaises d'Anesthésie et de Réanimation (2006), 25

New trends in the design of drugs against Alzheimer's disease

in Frontiers in Medicinal Chemistry (2006), 3

Three-dimensional finite element modeling of inductive and capacitive effects in micro-coils

in COMPEL (2006), 25(3), 642-651

Purpose - The paper seeks to develop dual 3D finite element (FE) formulations for modeling both inductive and capacitive effects in massive inductors, in particular micro-coils. The paper aims to build ... [more ▼]

Purpose - The paper seeks to develop dual 3D finite element (FE) formulations for modeling both inductive and capacitive effects in massive inductors, in particular micro-coils. The paper aims to build circuit relations relating the voltages and the currents in such inductors to be used in circuit coupling. Design/methodology/approach - A circuit relation involving a unique voltage and complementary inductive and capacitive currents is defined for each inductor. the inductive circuit relation is first classically obtained by a FE magnetodynamic model. Then, the capacitive relation is obtained through a FE electric model, using sources evaluated from the first model. The conformity is defined on one hand for the magnetic flux density and the electric field, and on the other hand for the magnetic field and the electric flux density. Mixed FE, i.e. nodal, edge and face elements, are used to satisfy each chosen conformity level for the unknown fields and to naturally define the involved global quantities, i.e. the voltages, currents and charges. Findings - This contribution points out the interest of satisfying conformity properties for the coupled magnetic and electric problems. An accurate computation of these effects is obtained in the critical frequency range of their strong interaction. In addition, the complementarity of dual solutions gives the possibility to estimate the discretisation error. Originality/value - The mathematical and discretisation tools for any wished conformity level are unified for naturally coupling magnetic and electric problems. The global quantities basis functions involved in the FE circuit relations benefit from a significant support reduction, which facilitates their evaluation and gives them direct physical interpretations. [less ▲]

Maturation de Form@sup : principes et instrument

in Revue Internationale de Pédagogie Universitaire (2006), 3(2), 1-17

Without resuming its detailed description, the present article proposes a critical analysis of the options taken in Form@sup, a one-year postgraduate degree for higher education teachers who want to ... [more ▼]

Without resuming its detailed description, the present article proposes a critical analysis of the options taken in Form@sup, a one-year postgraduate degree for higher education teachers who want to question their professional practice through the development of their online course. The article justifies the theoretical backgrounds of this training program and underlines the difficulties encountered in carrying out each of its basic principles. It then presents the decisions made for 2005-2006, insisting on the influence of the Scholarship of Teaching and Learning movement. Through its concrete examples, it also aims at fostering reflection and exchange of practice amongst the instructional developers teams. [less ▲]

Factors affecting the three-dimensional distribution of exogenous zinc in a sandy Luvisol subjected to intensive irrigation with raw wastewaters.

in Soil Use and Management (2006), 22

Massive volumes of raw wastewater have been spread on sandy Luvisols in the Paris region since 1899, causing major soil contamination with metallic trace elements (MTE). To identify the factors ... [more ▼]

Massive volumes of raw wastewater have been spread on sandy Luvisols in the Paris region since 1899, causing major soil contamination with metallic trace elements (MTE). To identify the factors influencing the vertical and horizontal redistribution of MTE at the plot scale, a study was carried out of the three-dimensional distribution of zinc. The background and exogenous fractions of zinc in the contaminated soil were discriminated using correlations between zinc and iron defined from unpolluted soils of the area. At the surface, the spatial distribution of zinc is determined by the geometry of the irrigation system and the terrain topography. The highest concentrations are observed near the irrigation outlets and in areas of very slight slope. The exogenous zinc has migrated down to the base of the studied solums (1 m depth), and its subsurface distribution depends upon the physico-chemical properties of the horizons. In the E horizon, the trapping of exogenous zinc is governed by the number of available reactive sites, whereas in the Bt horizon it is a function of the vertical and lateral behaviour of the drainage. Moreover, lateral transfer of exogenous zinc occurs in the C horizon. In the case of soil contaminated with raw wastewater, the organization of water flow on the surface and in the subsurface is a determining factor in the redistribution of zinc within a plot. [less ▲]