414 research outputs found

    Chronique de jurisprudence : droit bancaire. III, Crédits aux entreprises : sûretés [1]

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    Quand le montant de la créance cédée à titre de garantie excÚde le montant de la créance principale garantie, le débiteur de la créance cédée peut valablement se libérer entre les mains du cédant pour les sommes excédant le montant de la créance principale

    Chronique de jurisprudence : droit bancaire. VI, Droit bancaire international : sûretés

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    La garantie ici délivrée était soumise aux rÚgles uniformes en matiÚre de garantie à premiÚre demande de la chambre de commerce internationale selon lesquelles, sauf convention expresse contraire, le bénéficiaire doit, conformément à l\u27article 20, déclarer par écrit que le donneur d\u27ordre a manqué à une ou plusieurs de ses obligations prévues par le contrat de base et préciser en quoi le donneur d\u27ordre a manqué à cette obligation. Le donneur d\u27ordre peut invoquer le manquement contractuel du garant de premier rang pour engager sa responsabilité délictuelle

    Chronique de jurisprudence : droit bancaire. III, Crédits aux entreprises et garanties : cession de créance

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    La cession de créance à titre de garantie est un nantissement mais, si elle est signifiée, elle est opposable à la procédure collective

    Chronique de jurisprudence : droit bancaire. II, Crédits immobiliers et garanties : garantie de livraison

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    La garantie de livraison étant une garantie légale d\u27ordre public et autonome, la résiliation du contrat de construction n\u27entraßne pas sa caducité

    Chronique de jurisprudence : droit bancaire. III, Crédits aux entreprises et garanties : cautionnement [1]

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    1re espÚce : L\u27article L. 341-4 du Code de la consommation n\u27est pas applicable aux cautionnements souscrits avant son entrée en vigueur. 2e espÚce : L\u27obligation d\u27information annuelle n\u27est pas applicable à la sûreté réelle pour autrui, mais elle s\u27impose quand l\u27acte contient également un engagement personnel du constituant. 3e espÚce : Le gérant de société qui s\u27est porté caution des dettes de sa société peut se prévaloir du défaut d\u27information annuelle

    Evolution in prostheses for sprinters with lower-limb amputation

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    Depuis une quinzaine d'annĂ©es, les progrĂšs techniques en appareillage ont Ă©tĂ© le facteur dĂ©terminant de la progression des performances des sportifs amputĂ©s de membre infĂ©rieur. Pour l'amputĂ© tibial, la prothĂšse de course comprend un manchon gel et une emboĂźture solidarisĂ©s par un accrochage distal ou un vide virtuel. Par ses qualitĂ©s dynamiques, le pied en fibre de carbone, garni de pointes, assure des performances remarquables. Pour l'amputĂ© fĂ©moral, Ă©quipĂ© des mĂȘmes pieds prothĂ©tiques, le genou est Ă  biellettes et Ă  contrĂŽle des phases d'appui et pendulaire. Par rapport au coureur valide, le temps d'appui sur le membre appareillĂ© est raccourci tandis que celui sur le membre sain est allongĂ©. L'asymĂ©trie du sprint de l'amputĂ© tibial est discrĂšte. C'est le travail des extenseurs de hanche qui est la principale compensation au dĂ©ficit de propulsion dĂ» Ă  l'amputation. Chez l'amputĂ© fĂ©moral, l'absence de genou aggrave l'asymĂ©trie. L'extension totale du genou prothĂ©tique, prĂ©coce en fin de phase oscillante et persistant pendant toute la phase d'appui, impose une compensation par une augmentation d'extension de la hanche controlatĂ©rale. Les transferts de charge de travail entre cĂŽtĂ© amputĂ© et sain, par l'intermĂ©diaire d'une hyperlordose lombaire, mettent en jeu le bassin, le tronc et les Ă©paules. Les amputĂ©s sportifs font progresser la recherche en appareillage. Leurs orthoprothĂ©sistes acquiĂšrent avec eux un savoir-faire dont bĂ©nĂ©ficient leurs patients non-sportifs.For about 15 years, technical advances in prosthetic treatment have been the main factor in the increased performance of athletes with lower-limb amputation. For trans-tibial amputation, the prosthesis for sprinting is composed of a gel liner and a socket joined by a locking or virtual vacuum liner. Because of these dynamic properties, the carbon prosthetic foot equipped with tacks ensures outstanding performance. For trans-femoral amputation, a hydraulic swing and a stance control unit are added to the same prosthesis. In comparison with the able-bodied runner, athletes with amputation have smaller loading times in the prosthetic limb and larger ones in the sound limb. The length of the energy-storing prosthetic foot is determined by the “up-on-the-toes” running gait. The sprinting gait with trans-tibial amputation is almost symmetrical. The hip extensor effort is the main compensation of propulsion reduction with lower-limb amputation. With trans-femoral amputation, the lack of knee increases the asymmetry. The total prosthetic knee extension (early in late-swing phase and lasting during total stance phase) compensates with extension of both hips, especially the opposite one. The amputation and sound limb load transfer with lumbar hyperlordosis concern the pelvis, trunk and shoulders. Because of athletes with amputation, research in prosthetic treatment has progressed. The development of orthotics and prostheses for such athletes has benefited non-athletes with amputation

    Refrigeration System for the ATLAS Experiment

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    The proposed ATLAS detector for the 27 km circumference LHC collider is of unprecedented size and complexity. The magnet configuration is based on an inner superconducting solenoid and large superconducting air-core toroids (barrel and two end-caps) each made of eight coils symmetrically arranged outside the calorimetry. The total cold mass approaches 600 tons and the stored energy is 1.7 GJ. The cryogenic infrastructure will include a 6 kW @ 4.5 K refrigerator, a precooling unit and distribution systems and permits flexible operation during cool-down, normal running and quench recovery. A dedicated LN2 refrigeration system is proposed for the three liquid argon calorimeters (84 m3 of LAr). Magnets and calorimeters will be individually tested prior to their definitive installation in a large scale cryogenic test area on the surface. The experiment is scheduled to be operational in 2005

    Gaia Focused Product Release: Spatial distribution of two diffuse interstellar bands

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    Diffuse interstellar bands (DIBs) are absorption features seen in optical and infrared spectra of stars that are probably caused by large and complex molecules in the ISM. Here we investigate the Galactic distribution and properties of two DIBs identified in almost six million stellar spectra collected by the Gaia Radial Velocity Spectrometer. These measurements constitute a part of the Gaia Focused Product Release to be made public between the Gaia DR3 and DR4 data releases. In order to isolate the DIB signal from the stellar features in each individual spectrum, we identified a set of 160 000 spectra at high Galactic latitudes which we consider to be the DIB-free reference sample. Matching each target spectrum to its closest reference spectra in stellar parameter space allowed us to remove the stellar spectrum empirically, without reference to stellar models, leaving a set of six million ISM spectra. Identifying the two DIBs at 862.1 nm and 864.8 nm in the stacked spectra, we modelled their shapes and report the depth, central wavelength, width, and equivalent width (EW) for each, along with confidence bounds on these measurements. Our main results are as follows: (1) the strength and spatial distribution of the DIB λ\lambda862.1 are very consistent with what was found in Gaia DR3, but for this work we attained a higher signal-to-noise ratio in the stacked spectra to larger distances, which allowed us to trace DIBs in the outer spiral arm and beyond the Scutum--Centaurus spiral arm; (2) we produced an all-sky map below ±65∘{\pm}65^{\circ} of Galactic latitude to ∌\sim4000 pc of both DIB features and their correlations; (3) we detected the signals of DIB\,λ\lambda862.1 inside the Local Bubble; and (4) there is a reasonable correlation with the dust reddening found from stellar absorption and EWs of both DIBs.Comment: 29 pages, accepted for publication in A&

    Solid confirmation of the broad DIB around 864.8 nm using stacked Gaia–RVS spectra

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    Context. Studies of the correlation between different diffuse interstellar bands (DIBs) are important for exploring their origins. However, the Gaia–RVS spectral window between 846 and 870 nm contains few DIBs, the strong DIB at 862 nm being the only convincingly confirmed one. / Aims. Here we attempt to confirm the existence of a broad DIB around 864.8 nm and estimate its characteristics using the stacked Gaia–RVS spectra of a large number of stars. We study the correlations between the two DIBs at 862 nm (λ862) and 864.8 nm (λ864.8), as well as the interstellar extinction. / Methods. We obtained spectra of the interstellar medium (ISM) absorption by subtracting the stellar components using templates constructed from real spectra at high Galactic latitudes with low extinctions. We then stacked the ISM spectra in Galactic coordinates (ℓ,  b) – pixelized by the HEALPix scheme – to measure the DIBs. The stacked spectrum is modeled by the profiles of the two DIBs, Gaussian for λ862 and Lorentzian for λ864.8, and a linear continuum. We report the fitted central depth (CD), central wavelength, equivalent width (EW), and their uncertainties for the two DIBs. / Results. We obtain 8458 stacked spectra in total, of which 1103 (13%) have reliable fitting results after applying numerous conservative filters. This work is the first of its kind to fit and measure λ862 and λ864.8 simultaneously in cool-star spectra. Based on these measurements, we find that the EWs and CDs of λ862 and λ864.8 are well correlated with each other, with Pearson coefficients (rp) of 0.78 and 0.87, respectively. The full width at half maximum (FWHM) of λ864.8 is estimated as 1.62 ± 0.33 nm which compares to 0.55 ± 0.06 nm for λ862. We also measure the vacuum rest-frame wavelength of λ864.8 to be λ0 = 864.53 ± 0.14 nm, smaller than previous estimates. / Conclusions. We find solid confirmation of the existence of the DIB around 864.8 nm based on an exploration of its correlation with λ862 and estimation of its FWHM. The DIB λ864.8 is very broad and shallow. That at λ862 correlates better with E(BP − RP) than λ864.8. The profiles of the two DIBs could strongly overlap with each other, which contributes to the skew of the λ862 profile
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