1,040 research outputs found

    Exposition aux facteurs de stress et impact psychosocial du tremblement de terre de Tohoku et de ses conséquences sur les Français présents au Japon en mars 2011 - Étude qualitative

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    The Great East Japan Earthquake and Tsunami of the 11 th of March 2011 was followed by a nuclear accident. This study aim to identify the exposure to stress, the psychosocial impact and information need of the French Nationals who were in Japan at this time as well as the care they were looking for. A qualitative study based on 10 semi-structured interviews of French nationals was carried out between June and October 2013. They were chosen among the French who answered to the registry launched by the InVS considering the importance of the event. The interviews were face to face (7 in France, 2 in Japan) except for one in Japan that was performed by videoconference.This study confirms the impact of this disaster on real life experience. Some interviewed relate anxious and thymic manifestations or impacts on personality that might lead to seek care, even two years after the events. Beyond stress factors usually linked to natural disaster, this study showed that the issue of information was considerable, in particular about nuclear contamination that makes the feeling of worrying long lasting. Living abroad is a specificity that modifies the experience of such extreme events. This experience influenced the life-course of the exposed. These results will be useful for future post-disaster epidemiological studies. They plaid also for registering involved people as well as preparing appropriate and sustained information and mental health screening which allows people to stay active in their choices and decisionsLe séisme survenu au Japon le 11 mars 2011 a entraîné un tsunami et un accident nucléaire. L’objectif de cette étude est de mieux connaître, pour les ressortissants français présents, les expositions aux facteurs de stress liés à ces événements, ainsi que l’impact psychosocial et les besoins d’information et de prise en charge qui en ont résulté.Une étude qualitative par entretiens semi-directifs a été réalisée auprès d’une dizaine de personnes sélectionnées parmi celles qui avaient répondu à l’enregistrement proposé par l’InVS. Les entretiens se sont déroulés entre juin et octobre 2013 en face à face (7 en France, 2 au Japon) ou par visioconférence pour une personne domiciliée au Japon. Les résultats confirment le vécu bouleversant de cette catastrophe multiple pouvant contribuer, parfois à distance de l’événement, à la survenue de manifestations anxieuses, thymiques ou des modifications de la personnalité qui peuvent nécessiter un recours aux soins. Les facteurs de stress classiquement identifiés en rapport avec les catastrophes naturelles sont retrouvés. La question de l’information a été centrale, notamment au sujet de la contamination radiologique suscitant une inquiétude prolongée. L’expatriation est une situation particulière qui modifie les modalités de vécu de tels événements. Cette expérience a sensiblement influencé ou précipité des décisions relatives à l’existence. Ces résultats vont être utilisés pour planifier les études épidémiologiques post-catastrophe. Ils confirment l'importance d'un enregistrement initial des personnes impliquées et d'une offre d’information et de dépistage adaptée et maintenue dans le long terme qui donne aux personnes exposées la possibilité de rester actives dans leurs choix et leurs décisions

    Modulation of immune response to rDNA hepatitis B vaccination by psychological stress

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    In a previous study it was shown that antibody formation after vaccination with a low-dose recombinant DNA (rDNA) hepatitis B vaccine was negatively influenced by psychological stress. The present study was designed to assess whether the same inverse relation between HBs-antibody levels and psychological stress could be observed, while administering the standard, and thus higher, dose of vaccine. Volunteers (n = 68) scoring extremely low or high on a combination of questionnaires measuring daily problems and psychoneurotic symptoms were selected for participation. Antibody levels were determined 2, 6, and 7 months after the first vaccination. Questionnaires were completed before entering the study and at month 6. In contrast to the previous study, psychological stress was not found to be related to the antibody levels at any timepoint. These results suggest that, under certain conditions, stress-induced immunomodulation in vivo might be dependent on antigen dose

    The missing intrauterine device

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    The Intrauterine Contraceptive Device (IUD) is an acceptable and common form of contraception worldwide. The objective of this study was to report the case of an asymptomatic missing intrauterine contraceptive (IUD) inserted to prevent intrauterine adhesions after synechiolysis. A patient presented with missing IUD threads. Ultrasound of the pelvis showed an empty uterine cavity with the missing IUD probably anterior to the uterus. We present a stepwise approach in the management of the “lost IUD”, where the strings of the device are not visible at the time of speculum examination. We suggest first determining sonographically whether the IUD is within the cavity. If it is in situ, options for retrieval are including hysteroscopic retrieval. If the IUD is not within the cavity, X-rays are recommended. The device will not be present on X-ray if expulsion has occurred. If the device is present on the X-ray, cystoscopic or laparoscopic retrieval is required. IUD-providers should not only screen potential users and insert IUD correctly, but also ensure adequate follow-up with localization

    Toward Understanding the B[e] Phenomenon. II. New Galactic FS CMa Stars

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    FS CMa stars form a group of objects with the B[e] phenomenon that were previously known as unclassified B[e] stars or B[e] stars with warm dust (B[e]WD) until recently. They exhibit strong emission-line spectra and strong IR excesses, most likely due to recently formed circumstellar dust. These properties have been suggested to be due to ongoing or recent rapid mass exchange in binary systems with hot primaries and various types of secondaries. The first paper of this series reported an analysis of the available information about previously known Galactic objects with the B[e] phenomenon, the initial selection of the FS CMa group objects, and a qualitative explanation of their properties. This paper reports the results of our new search for more FS CMa objects in the IRAS Point Source Catalog. We present new photometric criteria for identifying FS CMa stars as well as the first results of our observations of nine new FS CMa group members. With this addition, the FS CMa group has now 40 members, becoming the largest among the dust-forming hot star groups. We also present nine objects with no evidence for the B[e] phenomenon, but with newly discovered spectral line emission and /or strong IR excesses.Fil: Miroshnichenko, A. S.. The University Of North Carolina At Greensboro; Estados UnidosFil: Manset, N.. Canada France Hawaii Telescope; Estados UnidosFil: Kusakin, A.V.. Lomonosov Moscow State University; Rusia. Fesenkov Astrophysical Institute; RusiaFil: Chentsov, E.L.. Russian Academy Of Sciences; RusiaFil: Klochkova, V. G.. Russian Academy Of Sciences; RusiaFil: Zharikov, S. V.. Universidad Nacional Autónoma de México; MéxicoFil: Gray, R. O.. Appalachian State University (appstate);Fil: Grankin, K. N.. Ulugh Beg Astronomical Institute Uzbekistan Academy Of Sciences; UzbekistánFil: Gandet, T. L.. Lizard Hollow Observatory; Estados UnidosFil: Bjorkman, K. S.. University Of Toledo (utoledo); Estados UnidosFil: Rudy, R. J.. The Aerospace Corporation; Estados UnidosFil: Lynch, D. K.. The Aerospace Corporation; Estados UnidosFil: Venturini, C. C.. The Aerospace Corporation; Estados UnidosFil: Mazuk, S.. The Aerospace Corporation; Estados UnidosFil: Puetter, R. C.. University of California at San Diego; Estados UnidosFil: Perry, R. B.. National Aeronautics and Space Administration; Estados UnidosFil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; ArgentinaFil: Grosso, Monica Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; ArgentinaFil: Bernabei, S.. Istituto Nazionale di Astrofisica; ItaliaFil: Polcaro, V. F.. Istituto Nazionale di Astrofisica; ItaliaFil: Viotti, R. F.. Istituto Nazionale di Astrofisica; ItaliaFil: Norci, L.. Dublin City University; IrlandaFil: Kuratov, K. S.. Fesenkov Astrophysical Institute; Kazajistá

    Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

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    The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.Peer reviewe

    Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

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    Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| &lt; 0.03 at 95% confidence level. [Figure not available: see fulltext.

    Development and validation of HERWIG 7 tunes from CMS underlying-event measurements

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    This paper presents new sets of parameters (“tunes”) for the underlying-event model of the HERWIG7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in HERWIG7, and are obtained from a fit to minimum-bias data collected by the CMS experiment at s=0.9, 7, and 13Te. The tunes are based on the NNPDF 3.1 next-to-next-to-leading-order parton distribution function (PDF) set for the parton shower, and either a leading-order or next-to-next-to-leading-order PDF set for the simulation of MPI and the beam remnants. Predictions utilizing the tunes are produced for event shape observables in electron-positron collisions, and for minimum-bias, inclusive jet, top quark pair, and Z and W boson events in proton-proton collisions, and are compared with data. Each of the new tunes describes the data at a reasonable level, and the tunes using a leading-order PDF for the simulation of MPI provide the best description of the dat

    Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions

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    A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015-2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.Peer reviewe

    Observation of the Production of Three Massive Gauge Bosons at root s=13 TeV

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    The first observation is reported of the combined production of three massive gauge bosons (VVV with V = W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis is based on a data sample recorded by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 137 fb(-1). The searches for individualWWW, WWZ, WZZ, and ZZZ production are performed in final states with three, four, five, and six leptons (electrons or muons), or with two same-sign leptons plus one or two jets. The observed (expected) significance of the combinedVVV production signal is 5.7 (5.9) standard deviations and the corresponding measured cross section relative to the standard model prediction is 1.02(-0.23)(+0.26). The significances of the individual WWW and WWZ production are 3.3 and 3.4 standard deviations, respectively. Measured production cross sections for the individual triboson processes are also reported
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