25 research outputs found

    A two-phase flow model to simulate mold filling and saturation in Resin Transfer Molding

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    The final publication is available at Springer via http://dx.doi.org/10.1007/s12289-015-1225-zThis paper addresses the numerical simulation of void formation and transport during mold filling in Resin Transfer Molding (RTM). The saturation equation, based on a two-phase flow model resin/air, is coupled with Darcy s law and mass conservation to simulate the unsaturated filling flow that takes place in a RTM mold when resin is injected through the fiber bed. These equations lead to a system composed of an advection diffusion equation for saturation including capillary effects and an elliptic equation for pressure taking into account the effect of air residual saturation. The model introduces the relative permeability as a function of resin saturation. When capillary effects are omitted, the hyperbolic nature of the saturation equation and its strong coupling with Darcy equation through relative permeability represent a challenging numerical issue. The combination of the constitutive physical laws relating permeability to saturation with the coupled system of the pressure and saturation equations allows predicting the saturation profiles. The model was validated by comparison with experimental data obtained for a fiberglass reinforcement injected in a RTM mold at constant flow rate. The saturation measured as a function of time during the resin impregnation of the fiber bed compared very well with numerical predictions.The authors acknowledge financial support of the Spanish Government (Projects DPI2010-20333 and DPI2013-44903-R-AR), of the National Science and Research Council of Canada (NSERC) and of the Canada Reseach Chair (CRC) program.GascĂłn MartĂ­nez, ML.; GarcĂ­a Manrique, JA.; Lebel, F.; Ruiz, E.; Trochu, F. (2016). A two-phase flow model to simulate mold filling and saturation in Resin Transfer Molding. 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    Communicating laboratory test results for rheumatoid factor: what do patients and physicians want?

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    Ariella Kelman,1,2 Caroline O Robinson,1 Elisenda Cochin,3 Nina J Ahluwalia,1 Julia Braverman,3 Emil Chiauzzi,3 Kristina Simacek3 1Genentech, South San Francisco, CA, USA; 2Division of Immunology and Rheumatology, Stanford University Medical School, Stanford, CA, USA; 3PatientsLikeMe, Cambridge, MA, USA Objective: This study aimed to explore patient and physician perspectives on current laboratory test reporting practices and to elicit ideas for improvement. Methods: Two independent studies were conducted. The first solicited members of an online physician community for opinions on current laboratory test reporting practices and possible improvements. The second addressed the same topic, but solicited patient feedback, and included an evaluation of a mock laboratory test report for the rheumatoid factor blood test. Results: Both physicians and patients expressed a desire for patient-friendly information on laboratory reports. Physicians expressed a need for education for patients around false-positive and false-negative results within laboratory reports, while patients sought context around the meaning of results, relevance to other tests, and follow-up steps. Conclusion: Physicians and patients see value in enhancing laboratory test reports to improve communication. While reports should include the context that patients value, they should also contain cautionary interpretation emphasized by physicians. Patient consultation on improving laboratory reports may help improve such patient-focused communication and promote greater patient understanding of health information, thereby increasing patient participation in their own health care and improving outcomes. Practice implications: Laboratory reports are typically designed by experts. Including patients in laboratory report design may facilitate communication and improve outcomes through better patient engagement. Keywords: laboratory test reports, doctor–patient communication, patient-centered, medical records, health record

    19/6/26, concours de l'amazone, Mme Guibert [i.e. Guilbert, au bois de Boulogne] : [photographie de presse] / [Agence Rol]

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    RĂ©fĂ©rence bibliographique : Rol, 110538Appartient Ă  l’ensemble documentaire : Pho20RolImage de press
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