Application of relativistic scattering theory of x rays to diffraction anomalous fine structure in Cu

We apply our recent first-principles formalism of magnetic scattering of circularly polarized x rays to a single Cu crystal. We demonstrate the ability of our formalism to interpret the crystalline environment related near-edge fine structure features in the resonant x-ray scattering spectra at the Cu K absorption edge. We find good agreement between the computed and measured diffraction anomalous fine structure features of the x-ray scattering spectra

Planck 2013 results. XVII. Gravitational lensing by large-scale structure

On the arcminute angular scales probed by Planck, the cosmic microwave background (CMB) anisotropies are gently perturbed by gravitational lensing. Here we present a detailed study of this effect, detecting lensing independently in the 100, 143, and 217 GHz frequency bands with an overall significance of greater than 25σ. We use thetemperature-gradient correlations induced by lensing to reconstruct a (noisy) map of the CMB lensing potential, which provides an integrated measure of the mass distribution back to the CMB last-scattering surface. Our lensing potential map is significantly correlated with other tracers of mass, a fact which we demonstrate using several representative tracers of large-scale structure. We estimate the power spectrum of the lensing potential, finding generally good agreement with expectations from the best-fitting ΛCDM model for the Planck temperature power spectrum, showing that this measurement at z = 1100 correctly predicts the properties of the lower-redshift, later-time structures which source the lensing potential. When combined with the temperature power spectrum, our measurement provides degeneracy-breaking power for parameter constraints; it improves CMB-alone constraints on curvature by a factor of two and also partly breaks the degeneracy between the amplitude of the primordial perturbation power spectrum and the optical depth to reionization, allowing a measurement of the optical depth to reionization which is independent of large-scale polarization data. Discarding scale information, our measurement corresponds to a 4% constraint on the amplitude of the lensing potential power spectrum, or a 2% constraint on the root-mean-squared amplitude of matter fluctuations at z ~ 2

Comprendre les mots du cancer : LexOnco, dictionnaire d'oncologie pour les personnes malades et leurs proches. Aspects méthodologiques

International audienceIn response to the evolution of the information-seeking behaviour of patients and concerns from health professionals regarding cancer patient information, nthe French National Federation of Comprehensive Cancer Centres (FNCLCC) introduced, in 1998, an information and education program dedicated to patients and relatives, the SOR SAVOIR PATIENT program. Lexonco project is a dictionary on oncology adapted for patients and relatives and validated by medical experts and cancer patients. This paper describes the methodological aspects which take into account patients and experts'perspectives to produce the definitions.Face à l'augmentation de la demande d'information des personnes malades et à leur rôle croissant dans la prise de décision médicale, l'accès à une information validée, compréhensible et systématiquement actualisée, en correspondance avec leurs besoins, est un enjeu majeur de Santé publique. Améliorer la qualité de la prise en charge des patients passe par l'appropriation des principaux termes en lien avec la maladie. Dans le cadre du programme pluridisciplinaire SOR SAVOIR PATIENT, le projet Lexonco (LEXique d'ONCOlogie) vise à offrir aux patients un dictionnaire sur le cancer, validé sur le plan médical et qui tient compte des besoins d'information et des préférences des personnes concernées par le cancer. Cet article décrit le projet en insistant plus particulièrement sur les principaux aspects méthodologiques mis en œuvre pour construire et valider les définitions destinées aux patients

FexMn1-x alloy phases strained in thin films. Depth dependent investigation of FexMn1-x/Ir(001) multilayers by X-ray diffraction

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X-ray anomalous diffraction and resonnant magnetic scattering X-ray study of FexMn1-x/Ir(100) superlattices

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Magnetic properties of bct FexMn1-x thin fims alloys investigated by linearly polarised soft X-ray resonant magnetic reflectivity

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X-ray anomalous diffraction and resonnant magnetic scattering X-ray study of FexMn1-x/Ir(100) superlattices

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