Paul Vignon

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My presentation summarizes work connected with digitizing Shroud photographs taken by Giuseppe Enrie in 1931, enhancing the digitized images to improve details, translating the enhanced images “gray scale data into depth data”, generating a sequence of up to 625 images of each of these, and combining these images with a Holoprinter to produce holograms (3D(More)
A technique for measuring average velocity in the inferior vena cava (IVC) by using phase-display magnetic resonance (MR) imaging is described. Fifteen healthy subjects were imaged, and the velocities and spectra obtained by MR were compared with pulsed Doppler results. Distortions of the "zebra-striped" images obtained along the axis of the vessel were(More)
The improved catalytic conversion of bioresources, namely unsaturated fatty acid derivatives, is presented. The targeted reaction is ruthenium-catalyzed cross-metathesis with functionalized olefins (α,β-unsaturated esters), that affords shorter diesters. These can be used as biosourced (pre)monomers for the production of polyesters. It is demonstrated that(More)
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