Antibrouillage radar en contexte de rotation d'antenne

- Nous nous intéressons dans cet article à l'algorithme Opposition dans les Lobes Secondaires (OLS) utilisé en traitement d'antenne RADAR dans un but d'antibrouillage en contexte de rotation d'antenne. Nous montrons que l'utilisation de la méthode Extended Sample Matrix Inversion (ESMI) [2] conduit alors à des performances supérieures à la méthode standard

Extraction selective des actinides des effluents de haute activite Etude des possibilites offertes par les proprietes redox des actinides.bMicrofiche

SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : RM 1476 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Ultrastructural localisation of AG NOR proteins during interphase and mitosis in human or mouse cancerous cells

peer reviewe

A new Certified Reference Material of CETAMA: its certification approach

To meet a need expressed by the French nuclear laboratories, the Commission for the Establishment of Analytical Methods (CETAMA) has provided a new reference material with high level in plutonium isotope 242Pu and certified in isotopic ratio. Based on the ISO guide 34, the production of this material by LAMMAN laboratory (Metrology Laboratory of Nuclear Material) in CEA Marcoule has been made from a solution of plutonium nitrate enriched in 242Pu. The certification process has been undertaken by interlaboratory comparison in collaboration with five French and European laboratories. The method of mass spectrometry thermal ionization (TIMS) was recommended as the analytical technique for certification. The statistical processing of the data provided by the laboratories has been done by four different approaches. The “excess-variance” approach has proved to be the best to process these data. After determining certified values and their associated uncertainties, a certificate has been established for this new reference material 242Pu

Early psychological impact of Paris terrorist attacks on healthcare emergency staff: A cross-sectional study

International audienceBackground: The terrorist attacks in Paris and Saint Denis on November 13, 2015 were an unprecedented traumatic event in France. It was an especially distressing ordeal for the healthcare personnel involved in the care of the victims. The aim of this study was to estimate the effect of direct participation in the rescue on posttraumatic stress disorder (PTSD) symptoms among these workers.Methods: Less than a month later, 613 healthcare providers (professionals and paraprofessionals) from three hospitals in the Paris suburbs were asked to complete an anonymous questionnaire. A multivariable Poisson model estimated the effect of participating onsite in the rescue (exposure variable) on the number of PTSD symptoms measured by the Trauma Screening Questionnaire (TSQ; outcome variable), adjusted for covariates.Results: Two hundred thirty-three providers completed the assessment (38% response rate), 130 participated directly in the rescue (56%). Participation was associated with a higher number of symptoms of PTSD (RR = 1.34, P = .002) than for nonparticipants. Female gender (RR = 1.39, P < .001) and basic (vs. advanced or intermediate) life-saving training (RR = 1.42, P = .004) were also associated with more PTSD symptoms. Participants in the rescue were at 2.76 times more risk of a probable PTSD diagnosis (OR = 2.76, P = .037), defined as reporting at least six PTSD symptoms. Sensitivity analyses using propensity score matching supported the robustness of our findings.Conclusions: Healthcare providers directly involved in the rescue of the victims of the Paris and Saint Denis attacks reported a significantly higher psychological impact, defined by PTSD symptoms, than those not directly involved.Keywords: PTSD risk factors; emergency team; psychological distress; terrorism; terrorist attacks

Early psychological impact of Paris terrorist attacks on healthcare emergency staff: A cross-sectional study

International audienceBackground: The terrorist attacks in Paris and Saint Denis on November 13, 2015 were an unprecedented traumatic event in France. It was an especially distressing ordeal for the healthcare personnel involved in the care of the victims. The aim of this study was to estimate the effect of direct participation in the rescue on posttraumatic stress disorder (PTSD) symptoms among these workers.Methods: Less than a month later, 613 healthcare providers (professionals and paraprofessionals) from three hospitals in the Paris suburbs were asked to complete an anonymous questionnaire. A multivariable Poisson model estimated the effect of participating onsite in the rescue (exposure variable) on the number of PTSD symptoms measured by the Trauma Screening Questionnaire (TSQ; outcome variable), adjusted for covariates.Results: Two hundred thirty-three providers completed the assessment (38% response rate), 130 participated directly in the rescue (56%). Participation was associated with a higher number of symptoms of PTSD (RR = 1.34, P = .002) than for nonparticipants. Female gender (RR = 1.39, P < .001) and basic (vs. advanced or intermediate) life-saving training (RR = 1.42, P = .004) were also associated with more PTSD symptoms. Participants in the rescue were at 2.76 times more risk of a probable PTSD diagnosis (OR = 2.76, P = .037), defined as reporting at least six PTSD symptoms. Sensitivity analyses using propensity score matching supported the robustness of our findings.Conclusions: Healthcare providers directly involved in the rescue of the victims of the Paris and Saint Denis attacks reported a significantly higher psychological impact, defined by PTSD symptoms, than those not directly involved.Keywords: PTSD risk factors; emergency team; psychological distress; terrorism; terrorist attacks

Development of new hydrometallurgical processes for actinide recovery: GANEX concept

International audienceIn the future, energy producing systems will be mainly based on the use of nuclear reactors of the 4 th generation, which will be developed to fulfil some criteria such as sustainability, economic efficiency, safety and resistance to proliferation risks. As a consequence, these reactors will burn fuels containing a large range of actinide elements: major actinides, such as U and Pu, but also minor actinides, such as Np, Am and Cm. This implies to master the management of all actinide elements within the overall fuel cycle and thus to develop new processes for their selective recovery and purification. This article describes the options, currently studied at CEA, to selectively recover all actinides together from the fission products by implementing hydrometallurgical processes, in order to further convert them into new targets or recycled fuels

[Management of DNA banks: ethical concerns]

With the creation of DNA banks, short and long-term studies can be conducted on the DNA of many individuals using stored cells and tissues. These studies allow an analysis of the pathophysiological impact of genetics and help define individual markers predictive of risk. Genome analysis is thus an important advance in medical science, providing essential information for establishing appropriate measures to slow disease development, limit severity or improve safe recovery. The use of genetic results may however have an adverse effect in certain situations if the genetic information collected were deviated from its purely medical purpose under the influence of social, occupational or economic factors. The aim of our study was to analyse the ethical challenges linked to the implementation of DNA banks in France, particularly to see how to maintain the concept of individual protection in biomedical research within the patient-physician relationship in the current context of legal and administrative regulations in France. In this study, we discuss a set of criteria which should be systematically evaluated in information collection and consent procedures prior to blood or tissue procurement for DNA bank purposes