Le directeur de thèse avant le directeur de thèse (1895-1963)

« J’ai eu le grand plaisir de passer ma thèse, samedi matin, avec la mention Très Bien. Soyez persuadé, Monsieur le Doyen, que ma consécration comme docteur ne relâchera pas mon respectueux attachement à mes maîtres de la Faculté de droit de Lyon. [...] [Elle] demeurera toujours MA Faculté. » Cette lettre envoyée par Robert Valeur au doyen Louis Josserand à la fin des années 1920 témoigne d’une préoccupation déjà bien ancrée sur le rôle des maîtres dans la conduite des thèses. Il est vrai qu’..

Intérêt des paramètres régionaux développés en ventriculographie isotopique dans la sélection de patients candidats à une resynchronisation cardiaque

DIJON-BU Médecine Pharmacie (212312103) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

3-Fluoro-2-quinolones From Anilines

N-(Fluoro-3-methoxyacryloyl)anilines [2-fluoro-3-methoxy-2-propenanilides] can be prepd. by condensation between lithium anilides and Me 2-fluoro-3-methoxy-2-propenoate. For example, the reaction of (E)- and (Z)-2-fluoro-3-methoxy-2-propenoic acid Me ester with aniline gave (E)- and (Z)-2-fluoro-3-methoxy-N-phenyl-2-propenoic acid Me ester. The cyclocondensation of the latter gave 3-fluoro-2(1H)-quinolinone. Under strongly acidic conditions, these intermediate undergo a cyclization reaction accompanied by elimination of methanol to give 3-fluoro-2-quinolones. Substituents occupying the para or ortho position of the aniline appear at the heterocyclic 6- and 8-positions, resp. In general, substituents attached to the meta position of the aniline lead to 1:1 mixts. of regioisomers. Only m-anisidine [3-methoxy-aniline] and m-fluoroaniline made an exception: they gave mainly the 7- and only trace amts. of the 5-substituted quinolone. [on SciFinder (R)

Use of compact Laser Doppler Velocimetry in reduced scale model testing of hydraulic machines

Laser based flow survey methods such as Laser Doppler Velocimetry (LDV) or Particle Image Velocimetry (PIV) have long been used for studying the flow in hydraulic machines. Even if the results have crucially improved our understanding of potentially destabilizing flow patterns in the draft tube at off-design conditions and the prediction of the stable operating range, these techniques are not systematically used for reduced scale model measurements in the frame of customer acceptance tests or development projects. In a not too distant past, the price, size and complexity of the necessary equipment and procedures exceeded the acceptable range for these projects. Recent developments however made them more accessible. Furthermore, the collaboration with experienced research institutes provides the necessary know-how as well as an added academic value by providing researchers with realistic test cases. This work reports a case study for which a compact LDV probe was used to measure the velocity field in the draft tube cone of a reduced scale physical model of a Francis turbine. The axial and tangential velocity profiles were established by performing measurements at several radial positions between the turbine centreline and the cone wall. The overall objective was the validation of numerical flow simulations across the entire operating range of the turbine, from partial to full load