7 research outputs found

    Analysis of an experimental setup for structural damping identification

    Get PDF
    In the present paper, an experimental setup for structural damping determination arising from energy dissipations within the material is presented. The experimental setup is developed in such a way that all unintended damping sources are eliminated. In this connection, priority is also given to the reproducibility of the experimental data. In addition, a vacuum chamber is developed to reduce the damping arising from the interaction with the surrounding medium. Furthermore, beam-shaped specimens are clamped in a suspended way, using screws with an apex to fix the specimens in their nodes of vibration. Then, the influence of test rig specific parameters on the damping value is analyzed. In this context, an ideal setup of the test rig is identified to measure structural damping values arising from dissipations within the material. Finally, a common model for material damping description is parameterized using the experimental data

    Fulminant liver failure in a child with invasive group A streptococcal infection

    No full text
    Liver involvement is mentioned in streptococcal toxic shock syndrome, but never as fulminant liver failure (FLF). We report the case of a 2-year-old child who developed isolated FLF secondary to invasive group A streptococcal infection without shock due to a M1T1-type strain expressing speA, speB and speC toxin genes. On antibiotics, he recovered rapidly without liver transplantation

    Detection of enteroviruses in the cerebrospinal fluid by polymerase chain reaction: prospective study of impact on the management of hospitalized children

    No full text
    A polymerase chain reaction kit (AMPLICOR EV) for the detection of enteroviruses (EV-PCR) in the cerebrospinal fluid (CSF) was evaluated in clinical conditions in a prospective blinded-intention study. Forty-three children (mean age 2.7 years) hospitalized for suspected meningitis or fever of unclear etiology were enrolled. EV-PCR was performed on a daily basis. Results were available in less than 2 days in 72% of cases. EV-PCR was positive in nine (21%) children, including three infants without CSF pleocytosis. Knowing their EV-PCR result would have allowed a saving of 18 hospital days and 12 days of antibiotic therapy. The EV-PCR in the CSF can thus be practically useful for children hospitalized for meningitis or fever if available on-site on a daily basis

    Habitats, mobiliers et groupes rĂ©gionaux Ă  l’ñge du fer

    No full text
    Traditionnellement, les colloques de l’A.F.E.A.F. se dĂ©coupent en deux parties : la premiĂšre fait le point de l’actualitĂ© de la recherche rĂ©gionale et la seconde aborde un thĂšme plus transversal et spĂ©cialisĂ©. Colmar n’a pas Ă©chappĂ© à cette rĂšgle et le lecteur lira d’abord dans les Actes ce qui appartient à la zone rhĂ©nane de BĂąle à Karlsruhe, et ensuite ce qui concerne l’apport des habitats et des mobiliers domestiques à la dĂ©finition des groupes rĂ©gionaux de l’Âge du Fer. Le lecteur verra en rĂ©alitĂ© que thĂšme rĂ©gional et thĂšme spĂ©cialisĂ© s’entrecroisent, ce qui fonde l’unitĂ© d’un ouvrage dans lequel les questions d’ordre territorial sont essentielles. La premiĂšre partie s’ouvre par une introduction de J.-P. Millotte sur la gĂ©ographie de la vallĂ©e du Rhin supĂ©rieur, les incidences de l’environnement sur l’activitĂ© humaine et le rĂŽle dĂ©cisif du fossĂ© rhĂ©nan comme voie de passage et point de fixation de peuplement. Par la suite, plusieurs articles reprennent cette problĂ©matique fondamentale de l’interaction hommes/milieux. L’ensemble des communications fait part des conditions de dĂ©couvertes, le plus souvent associĂ©es à des opĂ©rations prĂ©ventives et de sauvetage, et aux moyens mis en Ɠuvre. Les communications sur le thĂšme spĂ©cialisĂ© du colloque ont pour objectif de dĂ©finir des groupes rĂ©gionaux par le biais des habitats et du cadre domestique. Elles proposent successivement une rĂ©flexion gĂ©nĂ©rale sur les critĂšres à prendre en compte, sur le comment et le pourquoi d’une telle approche ; puis une analyse des formes de l’habitat (analyse typologique, fonctionnelle et chronologique), ainsi qu’une rĂ©flexion à partir des catĂ©gories matĂ©rielles. Il conviendra donc pour l’avenir de prendre en compte des sites de nature diffĂ©rente (fermes, hameaux, oppida...) et de mesurer leurs relations à l’échelle des terroirs
    corecore