Comment on "Aptian faulting in the Haushi-Huqf (Oman) and the tectonic evolution of the southeast Arabian platform-margin" by C. Montenat, P. Barrier and H.J. Soudet

International audienceOn the basis of field observations in the Huqf area in eastern Oman, Montenat et al. (2003) defined an extensional phase of faulting of Aptian age in the Arabian platform (see also Montenat and Barrier, 2002). We recently revisited the fault exposures of the Wadi Sha'bat al Tawraq from which this conclusion has been drawn (location in Figure 1a). Our observations contradict those of Montenat et al. (2003), and consequently our conclusions are opposite from theirs. Here we review the conflicting observations and discuss the different interpretations

Actes du Congrès Collèges célébrations 92

Également disponible en version papierTitre de l'écran-titre (visionné le 14 août 2009

Grid-enabled sentinel network for cancer surveillance

International audienc

Large-field high-resolution X-ray microscope for studying laser plasmas

International audienceIn 1948, P. Kirkpatrick and A. V. Baez developed an x-ray microscope (energy range about 100 eV-10 keV) composed of two concave spherical mirrors working at grazing incidence. That device, named KB microscope, presents a 3-5 μm resolution within a field having a radius about 100 μm; outside that field, its resolution lowers rapidly when the object point recedes from the center. The adjunction of two similar mirrors can notably increase the useful field (typically, the resolution can be better than 10 μm within a 2-mm-diam field of view), which is necessary for studying laser plasmas. Its main advantage with respect to more simple optics, as the pinhole, is that it can be located far enough from the plasma to avoid any destruction during the shot. We describe such a microscope that we call KBA microscope and present some images of fine metallic grids. Those grids were backlighted by x-raysources, either a cw one or a series of laser plasmas from the Octal-Héliotrope facility. Examining the films in detail shows that the experimental results are very close to the theoretical characteristics; hence the interest of this device for the x-raydiagnostics on the future powerful laser facilities

Implementation of a new clinical and organisational practice to improve access to primary care services : a protocol for an effectiveness-implementation hybrid study

Introduction In Canada, as in most Organisation for Economic Co-operation and Development countries, healthcare systems face significant challenges in ensuring better access to primary care. A regional healthcare organisation in Quebec (Canada) serving a population of approximately 755 459 citizens has implemented a standardised access approach to primary care services for this population. The objective of this new clinical and organisational practice is to ensure that users benefit from the same referral process, regardless of the entry point, in order to be directed to the right services. This new practice integrates a shared decision-making process between the user and the professional, and a collaborative process between different health professionals within and between services. The objective of our research is to identify and characterise the conditions of implementation of this practice. Methods This effectiveness-implementation hybrid investigation will use an embedded single-case study, defined in this case as the process of implementing a clinical and organisational practice within a healthcare organisation. Further to an evaluation conducted during a preliminary phase of the project, this study consists of evaluating the implementation of this new practice in four medical clinics (family medicine groups). A qualitative analysis of the data and a quantitative preimplementation and postimplementation analysis based on performance indicators will be conducted. This study is ultimately situated within a participatory organisational approach that involves various stakeholders and users at each step of the implementation and evaluation process

Drug-induced hallucination: A case/non case study in the French Pharmacovigilance Database

ABSTRACT -Background and Objectives: Hallucinations are sensory perceptions which occur without external stimuli. There are associated with psychiatric disease but also can be related to organic disease and drug or toxic exposure. The purpose of our study was to investigate the association between exposure to medications and the reporting of hallucinations using data from the spontaneous-reporting French Pharmacovigilance Database (FPVD). Methods: We used the case/noncase method in the FPVD. Cases were all the observations of hallucination with the LLT term "perception disturbances", registered into the FPVD from January 1985 to Jan 2013. Data were expressed as odds ratio (OR) with their 95% confidence intervals. Results: Among the 469,181 reports of adverse effects recorded between 1985 and 2013, 4,086 are hallucinations. For about 50% of these hallucinations were experimented by patient older than 65 years old. A statistically significant OR was found with several medications included rasagiline ]), zolpidem , methylphenidate ) and baclofene ). An increased risk of hallucinations was also observed with non central nervous system drugs, including ertapenem .5]), voriconazole ) and valacyclovir ]). Conclusions: This pharmacoepidemiological study describes an association between drugs and hallucinations. This relationship involves not only some already suspected drugs but also other drugs less known to induce such an adverse reaction. Despite the mandatory limits of this kind of study, these data should lead to special precautions in patient at risk

X-Ray and Optical Properties of Black Widows and Redbacks

Black widows and redbacks are binary systems consisting of a millisecond pulsar in a close binary with a companion having matter driven off of its surface by the pulsar wind. X-rays due to an intra-binary shock have been observed from many of these systems, as well as orbital variations in the optical emission from the companion due to heating and tidal distortion. We have been systematically studying these systems in radio, optical and X-rays. Here we will present an overview of X-ray and optical studies of these systems, including new XMM-Newton and NuStar data obtained from several of them, along with new optical photometry.Comment: 4 pages, 1 figure, Proceedings of IAU Symposium 337 "Pulsar Astrophysics - The Next 50 Years" held in Jodrell Bank Observatory, UK Sept. 4-8 201