La mise en scène de la conversion des pasteurs au temps de l’édit de Nantes

En parallèle au mouvement de conversion d’ecclésiastiques vers le protestantisme qui existe aux XVIe et XVIIe siècles et qui se prolonge au-delà , des pasteurs se convertissent au catholicisme durant la même période, même si ce mouvement s’accroît dans les années qui précèdent ou qui suivent la Révocation de l’édit de Nantes. Que ces conversions soient pour des raisons politiques, théologiques ou plus personnelles, elles s’accompagnent de la volonté des autorités politiques et catholiques de les mettre en avant pour qu’elles servent d’exemples auprès de leurs anciens coreligionnaires et tout particulièrement auprès des pasteurs des Églises réformées . Cette communication a donc pour objectif de montrer comment l’Église catholique cherche à mettre en scène ces conversions et à les faire connaître lors de manifestations publiques et quels supports sont utilisés pour toucher le public visé. Thierry Wanegffelen s’est intéressé à cette question pour le XVIe siècle . Il a souligné le fait « qu’une cérémonie d’abjuration vise à conforter le sentiment de l’unité de l’Église du Christ ». Il faut cependant distinguer deux principales catégories d’abjurations. Il existe tout d’abord celles au cours desquelles les protestants abjurent en masse sur une courte période de quelques jours, voire de plusieurs mois – c’est le cas lors de la « saison de la Saint-Barthélemy, pendant les dragonnades du Poitou de 1681, ou dans les mois qui précèdent et suivent la Révocation de l’édit de Nantes, il n’est généralement demandé qu’une simple renonciation à « l’hérésie de Calvin ». En revanche, si l’on excepte ces périodes particulières, la cérémonie d’abjuration donne lieu à un rituel plus élaboré qui prend encore plus d’importance lorsque le converti s’avère un personnage important, un pasteur par exemple. Ce sont ces cérémonies qui vont nous intéresser. Naturellement récits de conversions et ouvrages de controverses constituent l’essentiel des sources utilisées , mais aussi les actes des synodes provinciaux ou nationaux afin de pouvoir étudier comment la conversion de tel ou tel pasteur est annoncée. Des exemples seront pris sur l’ensemble du XVIIe siècle afin d’envisager certaines évolutions aussi bien du côté catholique que du côté réformé. Deux principaux aspects peuvent être envisagés : tout d’abord je partirai d’un cas précis de conversion de pasteurs, pour permettre, dans un second temps, une comparaison avec d’autres exemples

Hydrodynamic emission of strange and non-strange particles at RHIC and LHC

The hydrodynamic model is used to describe the single-particle spectra and elliptic flow of hadrons at RHIC and to predict the emission angle dependence of HBT correlations at RHIC and LHC energies.Comment: 6 pages LaTeX, 3 postscript figures. Proceedings for the conference "Strange Quark Matter 2003", Atlantic Beach, NC, March 12-17, 2003, to appear in J. Phys.

Hadron production in heavy ion collisions: Fragmentation and recombination from a dense parton phase

We discuss hadron production in heavy ion collisions at RHIC. We argue that hadrons at transverse momenta P_T < 5 GeV are formed by recombination of partons from the dense parton phase created in central collisions at RHIC. We provide a theoretical description of the recombination process for P_T > 2 GeV. Below P_T = 2 GeV our results smoothly match a purely statistical description. At high transverse momentum hadron production is well described in the language of perturbative QCD by the fragmentation of partons. We give numerical results for a variety of hadron spectra, ratios and nuclear suppression factors. We also discuss the anisotropic flow v_2 and give results based on a flow in the parton phase. Our results are consistent with the existence of a parton phase at RHIC hadronizing at a temperature of 175 MeV and a radial flow velocity of 0.55c.Comment: 25 pages LaTeX, 18 figures; v2: some references updated; v3: some typos fixe

Estimations of Ωˉ+/Ω−\bar{\Omega}^+/\Omega^- at RHIC from a QGP Model with Diquarks

Assuming that axial-vector and scalar diquarks exist in the Quark-Gluon Plasma near the critical temporature $T_c$, baryons can be produced from quark-diquark interactions. In RHIC conditions ($\sqrt{s_{NN}} = 130GeV$ and $200GeV$), the ratio $\bar{\Omega}^+/\Omega^-$ may be larger than 1, based on the concept that QGP with diquarks would exist. This unusual result might be a helpful evidence for QGP existing in RHIC.Comment: 6 pages, 1 figure. accepted by J.Phys.

The STAR Silicon Strip Detector (SSD)

The STAR Silicon Strip Detector (SSD) completes the three layers of the Silicon Vertex Tracker (SVT) to make an inner tracking system located inside the Time Projection Chamber (TPC). This additional fourth layer provides two dimensional hit position and energy loss measurements for charged particles, improving the extrapolation of TPC tracks through SVT hits. To match the high multiplicity of central Au+Au collisions at RHIC the double sided silicon strip technology was chosen which makes the SSD a half million channels detector. Dedicated electronics have been designed for both readout and control. Also a novel technique of bonding, the Tape Automated Bonding (TAB), was used to fullfill the large number of bounds to be done. All aspects of the SSD are shortly described here and test performances of produced detection modules as well as simulated results on hit reconstruction are given.Comment: 11 pages, 8 figures, 1 tabl

Extracellular Vesicle-Associated Aβ Mediates Trans-Neuronal Bioenergetic and Ca\u3csup\u3e2+\u3c/sup\u3e-Handling Deficits in Alzheimer\u27s Disease Models

Alzheimer’s disease (AD) is an age-related neurodegenerative disorder in which aggregation-prone neurotoxic amyloid β-peptide (Aβ) accumulates in the brain. Extracellular vesicles (EVs), including exosomes, are small 50–150 nm membrane vesicles that have recently been implicated in the prion-like spread of self-aggregating proteins. Here we report that EVs isolated from AD patient cerebrospinal fluid and plasma, from the plasma of two AD mouse models, and from the medium of neural cells expressing familial AD presenilin 1 mutations, destabilize neuronal Ca2+ homeostasis, impair mitochondrial function, and sensitize neurons to excitotoxicity. EVs contain a relatively low amount of Aβ but have an increased Aβ42/ Aβ40 ratio; the majority of Aβ is located on the surface of the EVs. Impairment of lysosome function results in increased generation of EVs with elevated Aβ42 levels. EVs may mediate transcellular spread of pathogenic Aβ species that impair neuronal Ca2+ handling and mitochondrial function, and may thereby render neurons vulnerable to excitotoxicity

Detector and Front-end electronics for ALICE and STAR silicon strip layers

Detector modules consisting of Silicon Strip Detector (SSD) and Front End Electronics (FEE) assembly have been designed in order to provide the two outer layers of the ALICE Inner Tracker System (ITS) [1] as well as the outer layer of the STAR Silicon Vertex Tracker (SVT) [2]. Several prototypes have beenproduced and tested in the SPS and PS beam at CERN to validate the final design. Double-sided, AC-coupled SSD detectors provided by two different manufacturers and also a pair of single-sided SSD have been asssociated to new low-power CMOS ALICE128C ASIC chips in a new detector module assembly. The same detectors have also been associated to current Viking electronics for reference purpose. These prototype detector modules are described and some first results are presented

Production test of microstrip detector and electronic frontend modules for the STAR and ALICE trackers

We revisit Shin et al.’s leakage-resilient password-based authenticated key establishment protocol (LR-AKEP) and the security model used to prove the security of LR-AKEP. By refining the Leak oracle in the security model, we show that LR-AKE (1) can, in fact, achieve a stronger notion of leakage-resilience than initially claimed and (2) also achieve an additional feature of traceability, not previously mentioned