Search results for "MINOS"
showing 10 items of 739 documents
Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=7 TeV using the ATLAS detector
2012
A measurement of the top-antitop production charge asymmetry A[subscript C] is presented using data corresponding to an integrated luminosity of 1.04 fb[superscript −1] of pp collisions at s√=7 TeV collected by the ATLAS detector at the LHC. Events are selected with a single lepton (electron or muon), missing transverse momentum and at least four jets of which at least one jet is identified as coming from a b-quark. A kinematic fit is used to reconstruct the t[bar over t] event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of A[subscript C] is A[subscript C]=−0.019±0.028 (stat.)±0.024 (s…
Measurement of t ¯ t production with a veto on additional central jet activity in pp collisions at √ s = 7 TeV using the ATLAS detector
2012
A measurement of the jet activity in t[bar over t] events produced in proton–proton collisions at a centre-of-mass energy of 7 TeV is presented, using 2.05 fb[superscript −1] of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. The t[bar over t] events are selected in the dilepton decay channel with two identified b-jets from the top quark decays. Events are vetoed if they contain an additional jet with transverse momentum above a threshold in a central rapidity interval. The fraction of events surviving the jet veto is presented as a function of this threshold for four different central rapidity interval definitions. An alternate measurement is also perfor…
Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting
2016
We measure the top quark mass in dilepton final states of top-antitop events in proton-antiproton collisions at sqrt(s) = 1.96 TeV, using data corresponding to an integrated luminosity of 9.7 fb^-1 at the Fermilab Tevatron Collider. The analysis features a comprehensive optimization of the neutrino weighting method to minimize the statistical uncertainties. We also improve the calibration of jet energies using the calibration determined in top-antitop to lepton+jets events, which reduces the otherwise limiting systematic uncertainty from the jet energy scale. The measured top quark mass is mt = 173.32 +/- 1.36(stat) +/- 0.85(syst) GeV.
Nomenclatural notes on Fabaceae described from Sicily
2021
A note about some taxa in Anthyllis and Trifolium (Fabaceae) described from Sicily is presented. Concerning Trifolium, we provide the lectotypification of the name T. pratense var. semipurpureum (≡ T. pratense subsp. semipurpureum), using a specimen preserved at PAL (Todaro’s collection). Concerning the Lojacono-Pojero’s name Vulneraria heterophylla var. parvula, it is lectotypified by a specimen at G. A neotype at NAP is proposed for the Gussone’s name Vulneraria heterophylla var. albiflora. As this latter name is applied to a taxon accepted here at specific rank, a new combination is validated. On the contrary, A. heterophylla var. parvula is considered as a new heterotypic synonym of Ant…
El ingeniero Antonio Navarro-Reverter y Ortoll. La continuación de una saga familiar en la compañía de tranvías y ferrocarriles de Valencia
2007
El ingeniero Antonio Fernando José Navarro-Reverter y Ortolt encarna en su persona la voluntad de una familia que ejerció su profesión a lo largo de diferentes generaciones, teniendo entre sus principales objetivos la creación y evolución del ferrocarril valenciano. Este ingeniero trabajó veinticinco años para la Compañía de Tranvías y Ferrocarriles de Valencia, realizando proyectos de ampliación y mejora de sus infraestructuras. (A)
El Hospital del Cristo (siglo XVIII) de Campillo de Altobuey (Cuenca). Arquitectura y Arte al cuidado del cuerpo y del alma en el Camino Real de Madr…
2002
El estudio nos presenta la existencia de un hospital de caridad localizado en el antiguo camino real de Valencia a Madrid en la población de Campillo de Altobuey (Cuenca). El edificio fue construido en el siglo XVIII (1720), aunque se empezó en el XVI y estuvo al cuidado de la iglesia local. La iglesia debe ser mencionada no sólo por su arquitectura y ornamentación, sino también por piezas relevantes como el retablo barroco y otros ornamentos litúrgicos. Además, hay abundante documentación de todos los trabajos artísticos que decoraban la iglesia del hospital.
Quasi-periodic dipping in the ultraluminous X-ray source, NGC 247 ULX-1
2021
Most ultraluminous X-ray sources (ULXs) are believed to be stellar mass black holes or neutron stars accreting beyond the Eddington limit. Determining the nature of the compact object and the accretion mode from broadband spectroscopy is currently a challenge, but the observed timing properties provide insight into the compact object and details of the geometry and accretion processes. Here we report a timing analysis for an 800 ks XMM-Newton campaign on the supersoft ultraluminous X-ray source, NGC 247 ULX-1. Deep and frequent dips occur in the X-ray light curve, with the amplitude increasing with increasing energy band. Power spectra and coherence analysis reveals the dipping preferential…
Aizvietotu cikloheksānu saturošu β-aminospirtu sintēze
2022
Maģistra darba literatūras apskata daļā apkopota informācija par β-adrenerģiskajiem receptoriem, to bioloģisko lomu, uzbūvi. Darbā apskatīta dažādu β-adrenerģisko receptoru agonistu uzbūve un to potenciālais pielietojums 2. tipa diabēta un aptaukošanās ārstēšanā. Darbā apskatītas epoksīdu aminolīzes reakcijas, Van Leusen reakcija un organocērija savienojumu pielietojums nitrilu dialkilēšanas reakcijās kā arī Ritera (Ritter) reakcija. Literatūras apskats satur informāciju, kas publicēta no 1954. gada līdz 2021. gadam, un iegūta, izmantojot datu bāzes Scopus, ScienceDirect un citas interneta datu bāzes. Darba gaitā tika sintezēti 26 jauni cikloheksānu saturoši β-aminospirti. Iegūtajiem savien…
Chemical effect on the XPS spectra of the valence band and on O KLL and Pd MNN Auger spectra in pumice-supported catalysts
1992
X-ray photoelectron spectra of the valence band and X-ray-excited O KLL Auger transition of pumice-supported Pd and Pt catalysts have been obtained and compared to the corresponding spectra of pumice (a naturally occurring amorphous aluminosilicate). The changes observed indicate interaction between metal and support. The valence region of the catalysts consists of three large peaks: one due to the d band of the metals and the other to the O 2p non-bonding orbitals and bonding-type orbitals formed by a mixing of the atomic orbitals (O 2p, Si 3s and Si 3p) of oxygen and silicon from the support. The intensity decrease of the component due to the bonding orbitals, observed in the catalyst spe…
The Role of Vitamin Deficiency in Liver Disease: To Supplement or Not Supplement?
2021
Over the past few years, growing interest has been shown for the impact of dietary requirements and nutritional factors on chronic diseases. As a result, nutritional programs have been reinforced by public health policies. The precise role of micronutrients in chronic liver disease is currently receiving particular attention since abnormalities in vitamin levels are often detected. At present, treatment programs are focused on correcting vitamin deficiencies, which are frequently correlated to higher rates of comorbidities with poor outcomes. The literature reviewed here indicates that liver diseases are often related to vitamin disorders, due to both liver impairment and abnormal intake. M…