Meillonnas – Le Château

Fondée en 1760 par M. de Marron, Baron de Meillonnas, aristocrate entreprenant et avisé, cette manufacture a produit de la faïence stannifère de « grand feu », de « petit feu », de la « terre à feu », de la « terre de Lorraine », de la faïence fine, brune, des grés, des creusets de fonderie, des poêles et de la terre vernissée jusqu’aux environs de 1870. Le but de cette fouille était double : tout d’abord, dans la perspective de l’archéologie industrielle, il s’agissait d’entreprendre l’étude..

The Effect of Haptic Feedback on Efficiency and Safety During Preretinal Membrane Peeling Simulation.

PurposeWe determine whether haptic feedback improves surgical performance and outcome during simulated a preretinal membrane peeling procedure.MethodsA haptic-enabled virtual reality preretinal membrane peeling simulator was developed using a surgical cockpit with two multifinger haptic devices. Six subjects (three trained retina surgeons and three nonsurgeons) performed the preretinal membrane peeling surgical procedure using two modes of operation: visual and haptic feedback, and visual feedback only.ResultsTask completion time, tool tip path trajectory, tool-retina collision force, and retinal damage were all reduced with haptic feedback used and compared to modes where haptic feedback was disabled.ConclusionsHaptic feedback improves efficiency and safety during preretinal membrane peeling simulation.Translational relevanceThese findings highlight the potential benefit of haptic feedback for improving performance and safety of vitreoretinal surgery

Retardation and reduction of pulse distortion by group-velocity dispersion through pulse shaping

We show that a reduction in the pulse distortion caused by chromatic dispersion can be achieved through pulse shaping. We argue that a simple binary phase mask in the Fourier plane of the laser spectrum can improve the transmission of short pulses in a dispersive channel through reduced broadening. The argument was tested experimentally, and a good agreement was found with the theory

Chapelot J., Chapelot O., Rieth B. dir., Terres cuites architecturales médiévales et modernes

La communauté des céramologues attendait depuis longtemps la publication annoncée des résultats du PCR (projet collectif de recherche) sur les Terres cuites architecturales en Île-de-France lancé en 2001 par Jean Chapelot, dont le manuscrit, prêt depuis plusieurs années, a finalement vu sa publication retardée par des difficultés de financement, ce qui a permis l’adjonction d’un certain nombre de travaux complémentaires. Dans l’introduction de Jean Chapelot, de la regrettée Odette Chapelot et..

Monette, Y., 2006, Les Productions céramiques du Québec méridional c. 1680-1890. Analyses, caractérisation et provenances

Cette étude issue d’une thèse de doctorat déposée à l’Université Laval de Québec au Canada est le résultat de cinq années de recherches menées sous la direction de Marcel Moussette, du Centre de recherche interdisciplinaire sur les arts et traditions populaires (CELAT), structure originale qui accueille en son sein le Groupe de Recherche en Archéométrie de l’Université Laval. Les études archéométriques, co-dirigées par Daniel Dufournier et Marc Richier-LaFlèche, ont été réalisées au Centre Ea..

La faïence en France du XIIIe au XIXe siècle

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On Dynamical Models for Radio Galaxies

The tailed radio galaxies that have been called ``Type I'' are not a uniform set. To study their dynamics, we have used the Ledlow-Owen data set, which provides a new sample of 250 radio galaxies in nearby Abell clusters. These sources divide into two clear categories based on their radio morphology. Type A sources (``straight'') contain nearly straight jets which are embedded in outer radio lobe. Type B sources (``tailed'') have a well-collimated jet flow which undergoes a sudden transition, at an inner hot spot, to a less collimated flow which continues on and forms a radio tail. We have not found any separation of these classes in terms of radio power, radio flux size, galaxy power or external gas density. We propose the difference is due to the development, or not, of a disruptive flow instability, such as Kelvin-Helmholtz, and the saturation of the instability when it develops.Comment: 10 pages, 4 figures, to appear in 'Life Cycles of Radio Galaxies', ed. J. Biretta etal, New Astronomy Review

Developing a Profile for Using Object-Oriented Ada in High-Integrity Systems

ABSTRACT This paper reports on the workshop that was held on Oct 27 th , 2010 during the SIGAda conference in Fairfax, VA. The goal of the workshop was to start an effort for defining a restricted profile for Object Oriented programming with Ada for high integrity systems, following the example of the Ravenscar profile for the concurrency aspects

Study of Foaming Properties and Effect of the Isomeric Distribution of Some Anionic Surfactants

Using different reaction conditions of photosulfochlorination of n-dodecane, two samples of anionic surfactants of sulfonate type are obtained. Their micellar behavior has been already reported and the relationship between their isomeric distribution and their chemical structures and micellar behaviors have been more thoroughly explored. In this investigation, we screened the foaming properties (foaming power and foam stability) by a standardized method very similar to the Ross–Miles foaming tests to identify which surfactants are suitable for applications requiring high foaming, or, alternatively, low foaming. The results obtained for the synthesized surfactants are compared to those obtained for an industrial sample of secondary alkanesulfonate (Hostapur 60) and to those of a commercial sample of sodium dodecylsulfate used as reference for anionic surfactants. The foam formation and foam stability of aqueous solutions of the two samples of dodecanesulfonate are compared as a function of their isomeric distribution. These compounds show good foaming power characterized in most cases by metastable or dry foams. The highest foaming power is obtained for the sample rich in primary isomers which also produces foam with a relatively high stability. For the sample rich in secondary isomers we observe under fixed conditions a comparable initial foam height but the foam stability turns out to be low. This property is interesting for applications requiring low foaming properties such as dishwashing liquid for machines. The best results are observed near and above the critical micellar concentrations and at 25 C for both the samples