First observation of electrons in the ATLAS detector

This poster shows approved plots from https://twiki.cern.ch/twiki/bin/view/Atlas/ElectronGammaApprovedCosmicPlots and will be presented at the Hadron Collider Physics Symposium 16th -20th November 2009 in Evian

Transcriptomic profiling and regulatory pathway modeling in a renal allograft transplantation model

Chronic allograft dysfunction (CAD) following kidney transplantation is characterized by progressive fibrosis and a smoldering inflammatory infiltrate. A modified Fischer 344 (RT1lvl) to Lewis (RT1l) rat renal allograft model was used to study transcriptomic changes during the initiation and progression of CAD and to identify potential therapeutic modes of action of treatment with 13cRA previously shown to limit the development of CAD. Transcriptomic profiling was performed using Affymetrix DNA arrays at time points 0, 7, 14 and 56 days after transplantation. The animal model showed development of significant chronic fibrotic damage with accompanying inflammatory infiltrate by day 56 after transplantation. Regulatory pathways were identified by the Database for Annotation, Visualization, and Integrated Discovery (DAVID) and modulated, based on the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways database. Microarray analysis revealed dramatic changes in the mRNA expression levels of genes associated with inflammation and fibrosis, as well as the hedgehog and WNT pathways, with a gradual increase in the number of differentially regulated genes during progression of tissue damage. Disease phenotype, as well as differential regulation of select components of the hedgehog, canonical WNT and WNT-Ca2+ signaling pathways could be verified by quantitative PCR (qPCR) and immunohistochemistry. Treatment with 13cRA, not only attenuated disease progression, but even reversed early effects of CAD. The overall effects of the treatment are mediated by a potentially direct influence on fibrosis and inflammation associated gene expression, as well as by a specific modulation, observed for hedgehog and WNT pathway activations. The results identify a series of potential pathways that may represent therapeutic targets in chronic allograft dysfunction

Lieder und Gesänge eines Christen : Nach kirchlichen Melodien bearbeitet und religiöser Andacht in häuslichen Kreisen und Schulen geweiht

https://www.ester.ee/record=b2172099*es

First Measurement of Z/gamma* Production in Compton Scattering of Quasi-real Photons

We report the first observation of Z/gamma* production in Compton scattering of quasi-real photons. This is a subprocess of the reaction e+e- to e+e-Z/gamma*, where one of the final state electrons is undetected. Approximately 55 pb-1 of data collected in the year 1997 at an e+e- centre-of-mass energy of 183 GeV with the OPAL detector at LEP have been analysed. The Z/gamma* from Compton scattering has been detected in the hadronic decay channel. Within well defined kinematic bounds, we measure the product of cross-section and Z/gamma* branching ratio to hadrons to be (0.9+-0.3+-0.1) pb for events with a hadronic mass larger than 60 GeV, dominated by (e)eZ production. In the hadronic mass region between 5 GeV and 60 GeV, dominated by (e)egamma* production, this product is found to be (4.1+-1.6+-0.6) pb. Our results agree with the predictions of two Monte Carlo event generators, grc4f and PYTHIA.Comment: 18 pages, LaTeX, 5 eps figures included, submitted to Physics Letters

Measurements of Flavour Dependent Fragmentation Functions in Z^0 -> qq(bar) Events

Fragmentation functions for charged particles in Z -> qq(bar) events have been measured for bottom (b), charm (c) and light (uds) quarks as well as for all flavours together. The results are based on data recorded between 1990 and 1995 using the OPAL detector at LEP. Event samples with different flavour compositions were formed using reconstructed D* mesons and secondary vertices. The \xi_p = ln(1/x_E) distributions and the position of their maxima \xi_max are also presented separately for uds, c and b quark events. The fragmentation function for b quarks is significantly softer than for uds quarks.Comment: 29 pages, LaTeX, 5 eps figures (and colour figs) included, submitted to Eur. Phys. J.

Bose-Einstein Correlations in e+e- to W+W- at 172 and 183 GeV

Bose-Einstein correlations between like-charge pions are studied in hadronic final states produced by e+e- annihilations at center-of-mass energies of 172 and 183 GeV. Three event samples are studied, each dominated by one of the processes W+W- to qqlnu, W+W- to qqqq, or (Z/g)* to qq. After demonstrating the existence of Bose-Einstein correlations in W decays, an attempt is made to determine Bose-Einstein correlations for pions originating from the same W boson and from different W bosons, as well as for pions from (Z/g)* to qq events. The following results are obtained for the individual chaoticity parameters lambda assuming a common source radius R: lambda_same = 0.63 +- 0.19 +- 0.14, lambda_diff = 0.22 +- 0.53 +- 0.14, lambda_Z = 0.47 +- 0.11 +- 0.08, R = 0.92 +- 0.09 +- 0.09. In each case, the first error is statistical and the second is systematic. At the current level of statistical precision it is not established whether Bose-Einstein correlations, between pions from different W bosons exist or not.Comment: 24 pages, LaTeX, including 6 eps figures, submitted to European Physical Journal