Do the abundances of key fish species change in response to natural and human-induced events in Cockburn Sound?

Oral presentatio

Incidents de sécurité des patients pendant la période de crise sanitaire ( COVIC-19) en France

Contexte. La pandémie de COVID-19 a imposé une réorganisation rapide des services de santé. Les patients sont exposés à des risques importants de dommages associés aux soins. L’interruption totale des services de soins pendant la pandémie a contribué à accroître ces risques. Objectif. Le type et la nature des incidents liés à la sécurité des patients (i.e. événements indésirables) en soins de premier recours en France au cours de la première vague de COVID-19 a été exploré afin de formuler des recommandations provisoires en vue d’améliorations. Méthodes. Une enquête nationale de déclaration des incidents liés à la sécurité des patients a été envoyée aux médecins généralistes français le 28 avril 2020. Les déclarations ont été codées à l’aide d’un système de classification aligné sur la classification internationale pour la sécurité des patients de l’OMS (types d’incidents, facteurs contributifs, résultats de l’incident et gravité du préjudice). L’analyse a impliqué le codage des données, leur traitement, la génération itérative de résumés de données à l’aide d’une analyse statistique descriptive et thématique. Clinicaltrials.gov : NCT04346121. Résultats. Sur 132 incidents, 58 (44 %) étaient liés à des retards de diagnostic, d’évaluation et d’orientation. Des annulations de rendez-vous, d’hospitalisations ou de procédures ont été signalées dans 22 (17 %) de ces incidents. Les incidents liés au confinement à domicile ont fait l’objet de 15 déclarations (10 %), et l’arrêt inapproprié de médicaments de cinq déclarations (4 %). Les patients ont retardé leur consultation ou n’ont pas consulté leur médecin généraliste ou d’autres professionnels de santé par crainte de contracter une infection à la COVID-19 dans 26 (10 %) incidents, ou par crainte de surcharger leur médecin généraliste dans huit (3 %) incidents. Conclusion. Les contraintes découlant de la première vague de la pandémie de COVID-19 ont contribué aux incidents liés à la sécurité des patients lors d’affections non liées à la COVID-19. Les leçons tirées de ces incidents mettent en évidence les domaines dans lesquels les services de soins de premier recours en France peuvent concentrer leurs ressources pour concevoir des systèmes plus sûrs pour les patients

Study of heat flux deposition on the limiter of the Tore Supra tokamak

International audienc

Concept and development of ITER divertor thermography diagnostic

International audienc

Investigation of steady-state tokamak issues by long pulse experiments on Tore Supra

The main results of the Tore Supra experimental programme in the years 2007–2008 are reported. They document significant progress achieved in the domain of steady-state tokamak research, as well as in more general issues relevant for ITER and for fusion physics research. Three areas are covered: ITER relevant technology developments and tests in a real machine environment, tokamak operational issues for high power and long pulses, and fusion plasma physics. Results presented in this paper include test and validation of a new, load-resilient concept of ion cycotron resonance heating antenna and of an inspection robot operated under ultra-high vacuum and high temperature conditions; an extensive experimental campaign (5 h of plasma) aiming at deuterium inventory and carbon migration studies; real-time control of sawteeth by electron cyclotron current drive in the presence of fast ion tails; ECRH-assisted plasma start-up studies; dimensionless scalings of transport and turbulenc

Contribution of Tore Supra in preparation of ITER

Tore Supra routinely addresses the physics and technology of very long-duration plasma discharges, thus bringing precious information on critical issues of long pulse operation of ITER. A new ITER relevant lower hybrid current drive (LHCD) launcher has allowed coupling to the plasma a power level of 2.7 MW for 78 s, corresponding to a power density close to the design value foreseen for an ITER LHCD system. In accordance with the expectations, long distance (10 cm) power coupling has been obtained. Successive stationary states of the plasma current profile have been controlled in real-time featuring (i) control of sawteeth with varying plasma parameters, (ii) obtaining and sustaining a 'hot core' plasma regime, (iii) recovery from a voluntarily triggered deleterious magnetohydrodynamic regime. The scrape-off layer (SOL) parameters and power deposition have been documented during L-mode ramp-up phase, a crucial point for ITER before the X-point formation. Disruption mitigation studies have been conducted with massive gas injection, evidencing the difference between He and Ar and the possible role of the q = 2 surface in limiting the gas penetration. ICRF assisted wall conditioning in the presence of magnetic field has been investigated, culminating in the demonstration that this conditioning scheme allows one to recover normal operation after disruptions. The effect of the magnetic field ripple on the intrinsic plasma rotation has been studied, showing the competition between turbulent transport processes and ripple toroidal friction. During dedicated dimensionless experiments, the effect of varying the collisionality on turbulence wavenumber spectra has been documented, giving new insight into the turbulence mechanism. Turbulence measurements have also allowed quantitatively comparing experimental results with predictions by 5D gyrokinetic codes: numerical results simultaneously match the magnitude of effective heat diffusivity, rms values of density fluctuations and wavenumber spectra. A clear correlation between electron temperature gradient and impurity transport in the very core of the plasma has been observed, strongly suggesting the existence of a threshold above which transport is dominated by turbulent electron modes. Dynamics of edge turbulent fluctuations has been studied by correlating data from fast imaging cameras and Langmuir probes, yielding a coherent picture of transport processes involved in the SOL. Corrections were made to this article on 6 January 2012. Some of the letters in the text were missing