7 research outputs found
Analysis of an experimental setup for structural damping identification
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
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
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 lâĂąge du fer
Traditionnellement, les colloques de lâA.F.E.A.F. se dĂ©coupent en deux parties : la premiĂšre fait le point de lâactualitĂ© de la recherche rĂ©gionale et la seconde aborde un thĂšme plus transversal et spĂ©cialisĂ©. Colmar nâa pas Ă©chappĂ© aÌ cette rĂšgle et le lecteur lira dâabord dans les Actes ce qui appartient aÌ la zone rhĂ©nane de BĂąle aÌ Karlsruhe, et ensuite ce qui concerne lâapport des habitats et des mobiliers domestiques aÌ la dĂ©finition des groupes rĂ©gionaux de lâĂge du Fer. Le lecteur verra en rĂ©alitĂ© que thĂšme rĂ©gional et thĂšme spĂ©cialisĂ© sâentrecroisent, ce qui fonde lâunitĂ© dâun ouvrage dans lequel les questions dâordre territorial sont essentielles. La premiĂšre partie sâouvre par une introduction de J.-P. Millotte sur la gĂ©ographie de la vallĂ©e du Rhin supĂ©rieur, les incidences de lâenvironnement sur lâactivitĂ© 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 lâinteraction hommes/milieux. Lâensemble des communications fait part des conditions de dĂ©couvertes, le plus souvent associĂ©es aÌ des opĂ©rations prĂ©ventives et de sauvetage, et aux moyens mis en Ćuvre. 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 aÌ prendre en compte, sur le comment et le pourquoi dâune telle approche ; puis une analyse des formes de lâhabitat (analyse typologique, fonctionnelle et chronologique), ainsi quâune rĂ©flexion aÌ partir des catĂ©gories matĂ©rielles. Il conviendra donc pour lâavenir de prendre en compte des sites de nature diffĂ©rente (fermes, hameaux, oppida...) et de mesurer leurs relations aÌ lâĂ©chelle des terroirs