283 research outputs found

    J. Giovacchini, L’Empirisme d’Épicure, Les anciens et les modernes – Études de philosophie 11, Classiques Garnier, Paris 2012

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    Discussione critica del volume di J. Giovacchini, L’Empirisme d’Épicure

    S.C. Feinstein, P.L. Giovacchini, A. A. Miller. — Psychiatrie de l’adolescent. Paris, P. U. F., Le fil rouge, 1982

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    Bolzinger André. S.C. Feinstein, P.L. Giovacchini, A. A. Miller. — Psychiatrie de l’adolescent. Paris, P. U. F., Le fil rouge, 1982. In: Bulletin de psychologie, tome 36 n°360, 1983. Psychologie clinique VI. pp. 696-697

    Association between blood transfusions and complications in head and neck reconstruction: a systematic review and meta-analysis

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    Purpose: The aim of this meta-analysis is to assess the correlation between blood transfusions and the medical/surgical complications after head and neck reconstructive surgery. Methods: The PRISMA protocol was used and the literature search was performed on Pubmed, Scopus, Cochrane Library and Web of Science up to March 13, 2020. The risk of bias in individual studies was assessed through the Newcastle Ottawa Scale. Results: A total of 1219 records were screened after the electronic search, 22 of which were included in the qualitative analysis. Of there 22 scores, 18 articles were included in the meta-analysis. The OR for medical and surgical complications of transfused patients was 1,64 (95% CI 1.23–2.21); while, the OR for hospital readmission was 1.53 (95% CI 1.29–1.81). Conclusions: The results of this meta-analysis suggested that blood transfusions are associated with both an increased risk of surgical and medical complications of head and neck flaps and with the hospital readmission

    Numerical simulation of a low Prandtl number flow over a backward facing step with an anisotropic four-equation turbulence model

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    In recent years the use of liquid metals has become more and more popular for heat transfer applications in many fields ranging from IV generation fast nuclear reactors to solar power plants. Due to their low Prandtl number values, the similarity between dynamical and thermal fields cannot be assumed and sophisticated heat turbulence models are required to take into account the anisotropy of the turbulent heat transfer involving liquid metals. In the present work, we solve an anisotropic four-equation turbulence model coupled with the Reynolds Averaged Navier Stokes system of equations to simulate a turbulent flow of liquid sodium over a vertical backward-facing step. We implement an explicit algebraic model for Reynolds stress tensor and turbulent heat flux that takes into account flow anisotropic behavior. We study forced and mixed convection regimes when a uniform heat flux is applied on the wall behind the step. Linear isotropic approximations for eddy viscosity and eddy thermal diffusivity underestimate the turbulent heat flux components while this anisotropic model shows a better agreement with DNS results

    Incidental detection by [C-11]choline PET/CT of meningiomas in prostate cancer patients

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    Aim Anti-androgenic hormonal therapy in prostate cancer patients with concomitant meningioma may result m tumor growth and development of neurological symptoms. Positron emission tomography/computed tomography (PET/CT) with [C-11]choline is used for restaging prostate cancer patients with biochemical failure. In vitro and in vivo data support altered choline metabolism in meningiomas. Methods. During a retrospective study in prostate cancer patients with biochemical failure referred to our institution between November 2004 and Ja-nuary 2007, encephalic focal uptake of [C-11]choline was incidentally noted in 4 patients, 2 of which had been taking luteinizing hormone-releasing hormone analogs. Results. Subsequent to the incidental finding, one patient underwent surgical removal of the meningioma; strict neuroradiological follow-up was planned for the 3 other patients. Conclusion. We suggest that in prostate cancer patients candidate for anti-androgenic therapy the whole body [C-11]choline PET/CT scan should include the whole skull to check for the possible presence of meningiomas. This could help to identify patients at risk for the development of neurological symptoms during anti-androgenic therapy and help the referring urologist in the clinical management of these patients

    Exoskeletons for workers: A case series study in an enclosures production line

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    This case-series study aims to investigate the effects of a passive shoulder support exoskeleton on experienced workers during their regular work shifts in an enclosures production site. Experimental activities included three sessions, two of which were conducted in-field (namely, at two workstations of the painting line, where panels were mounted and dismounted from the line; each session involved three participants), and one session was carried out in a realistic simulated environment (namely, the workstations were recreated in a laboratory; this session involved four participants). The effect of the exoskeleton was evaluated through electromyographic activity and perceived effort. After in-field sessions, device usability and user acceptance were also assessed. Data were reported individually for each participant. Results showed that the use of the exoskeleton reduced the total shoulder muscular activity compared to normal working conditions, in all subjects and experimental sessions. Similarly, the use of the exoskeleton resulted in reductions of the perceived effort in the shoulder, arm, and lower back. Overall, participants indicated high usability and acceptance of the device. This case series invites larger validation studies, also in diverse operational contexts
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