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Träfflista för sökning "WFRF:(Guerrero C.) srt2:(2010-2014)"

Sökning: WFRF:(Guerrero C.) > (2010-2014)

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1.
  • Tarrío, Diego, et al. (författare)
  • Measurement of the angular distribution of fission fragments using a PPAC assembly at CERN n_TOF
  • 2014
  • Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 743, s. 79-85
  • Tidskriftsartikel (refereegranskat)abstract
    • A fission reaction chamber based on Parallel Plate Avalanche Counters (PPACs) was built for measuring angular distributions of fragments emitted in neutron-induced fission of actinides at the neutron beam available at the Neutron Time-Of-Flight (n_TOF) facility at CERN. The detectors and the samples were tilted 45 degrees with respect to the neutron beam direction to cover all the possible values of the emission angle of the fission fragments. The main features of this setup are discussed and results on the fission fragment angular distribution are provided for the Th-232(n,f) reaction around the fission threshold. The results are compared with the available data in the literature, demonstrating the good capabilities of this setup.
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2.
  • Tarrío, Diego, et al. (författare)
  • Fission Fragment Angular Distribution of Th-232(n,f) at the CERN n_TOF Facility
  • 2014
  • Ingår i: Nuclear Data Sheets. - Univ Santiago de Compostela, Santiago De Compostela, Spain. [Leong, L. S.; Audouin, L.; Tassan-Got, L.; Lederer, C.] IPN, CNRS, IN2P3, Orsay, France. [Altstadt, S.; Langer, C.; Lederer, C.; Reifarth, R.; Schmidt, S.; Weigand, M.] Goethe Univ Frankfurt, D-60054 Frankfurt, Germany. [Andrzejewski, J.; Marganiec, J.; Perkowski, J.] Univ Lodz, PL-90131 Lodz, Poland. [Barbagallo, M.; Colonna, N.; Mastromarco, M.; Meaze, M.; Tagliente, G.; Variale, V.] Ist Nazl Fis Nucl, I-70126 Bari, Italy. [Becares, V.; Cano-Ott, D.; Garcia, A. R.; Gonzalez-Romero, E.; Martinez, T.; Mendoza, E.] CIEMAT, E-28040 Madrid, Spain. [Becvar, F.; Krticka, M.; Kroll, J.; Valenta, S.] Charles Univ Prague, Prague, Czech Republic. [Belloni, F.; Berthoumieux, E.; Bosnar, D.; Chiaveri, E.; Fraval, K.; Gunsing, F.] CEA Saclay, Irfu, F-91191 Gif Sur Yvette, France. [Berthoumieux, E.; Boccone, V.; Bosnar, D.; Brugger, M.; Calviani, M.; Cerutti, F.; Chiaveri, E.; Chin, M.; Ferrari, A.; Guerrero, C.; Kadi, Y.; Losito, R.; Roman, F.; Rubbia, C.; Tsinganis, A.; Versaci, R.; Vlachoudis, V.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland. [Billowes, J.; Ware, T.; Wright, T. J.] Univ Manchester, Manchester, Lancs, England. [Zugec, P.] Univ Zagreb, Fac Sci, Dept Phys, Zagreb 41000, Croatia. [Calvino, F.; Cortes, G.; Gomez-Hornillos, M. B.; Riego, A.] Univ Politecn Cataluna, Barcelona, Spain. [Carrapico, C.; Goncalves, I. F.; Sarmento, R.; Vaz, P.] Univ Tecn Lisboa, Inst Super Tecn, Inst Tecnol Nucl, P-1096 Lisbon, Portugal. [Cortes-Giraldo, M. A.; Praena, J.; Quesada, J. M.] Univ Seville, Seville, Spain. [Diakaki, M.; Karadimos, D.; Kokkoris, M.; Vlastou, R.] Natl Tech Univ Athens, GR-10682 Athens, Greece. [Domingo-Pardo, C.; Giubrone, G.; Tain, J. L.] Univ Valencia, CSIC, Inst Fis Corpuscular, E-46003 Valencia, Spain. [Dzysiuk, N.; Mastinu, P. F.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, Milan, Italy. [Eleftheriadis, C.; Manousos, A.] Aristotle Univ Thessaloniki, GR-54006 Thessaloniki, Greece. [Ganesan, S.; Gurusamy, P.] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India. [Griesmayer, E.; Jericha, E.; Leeb, H.; Weiss, C.] Vienna Univ Technol, Inst Atom, Vienna, Austria. [Jenkins, D. G.; Vermeulen, M. J.] Univ York, York YO10 5DD, N Yorkshire, England. [Kaeppeler, F.] Karlsruhe Inst Technol, Inst Kernphys, D-76021 Karlsruhe, Germany. [Koehler, P.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Lederer, C.; Pavlik, A.; Wallner, A.] Univ Vienna, Fac Phys, A-1010 Vienna, Austria. [Massimi, C.; Mingrone, F.; Vannini, G.] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy. [Massimi, C.; Mingrone, F.; Vannini, G.] Sez INFN Bologna, Bologna, Italy. [Mengoni, A.; Ventura, A.] Agenzia Nazl Nuove Tecnol, Eenergia & Sviluppo Econ Sostenibile ENEA, Bologna, Italy. [Milazzo, P. M.] Ist Nazl Fis Nucl, Trieste, Italy. [Mirea, M.; Roman, F.] Horia Hulubei Natl Inst Phys & Nucl Engn, IFIN HH, Bucharest, Romania. [Mondalaers, W.; Plompen, A.; Schillebeeckx, P.] European Commiss JRC, Inst Reference Mat & Measurements, B-2440 Geel, Belgium. [Rauscher, T.] Univ Basel, Dept Phys & Astron, Basel, Switzerland. [Rubbia, C.] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Assergi, AQ, Italy. : Elsevier BV. - 0090-3752 .- 1095-9904. ; 119, s. 35-37
  • Tidskriftsartikel (refereegranskat)abstract
    • The angular distribution of fragments emitted in neutron-induced fission of Th-232 was measured in the white spectrum neutron beam at the n_TOF facility at CERN. A reaction chamber based on Parallel Plate Avalanche Counters (PPAC) was used, where the detectors and the targets have been tilted 45 degrees with respect to the neutron beam direction in order to cover the full angular range of the fission fragments. A GEANT4 simulation has been developed to study the setup efficiency. The data analysis and the preliminary results obtained for the Th-232(n,f) between fission threshold and 100 MeV are presented here.
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4.
  • Hanly, J. G., et al. (författare)
  • Autoantibodies as biomarkers for the prediction of neuropsychiatric events in systemic lupus erythematosus
  • 2011
  • Ingår i: Annals of the Rheumatic Diseases. - : BMJ. - 1468-2060 .- 0003-4967. ; 70:10, s. 1726-1732
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective Neuropsychiatric events occur unpredictably in systemic lupus erythematosus (SLE) and most biomarker associations remain to be prospectively validated. This study examined a disease inception cohort of 1047 SLE patients to determine which autoantibodies at enrolment predicted subsequent neuropsychiatric events. Methods Patients with a recent SLE diagnosis were assessed prospectively for up to 10 years for neuropsychiatric events using the American College of Rheumatology case definitions. Decision rules of graded stringency determined whether neuropsychiatric events were attributable to SLE. Associations between the first neuropsychiatric event and baseline autoantibodies (lupus anticoagulant (LA), anticardiolipin, anti-beta(2) glycoprotein-I, anti-ribosomal P and anti-NR2 glutamate receptor) were tested by Cox proportional hazards regression. Results Disease duration at enrolment was 5.4 +/- 4.2 months, follow-up was 3.6 +/- 2.6 years. Patients were 89.1% female with mean (+/- SD) age 35.2 +/- 13.7 years. 495/1047 (47.3%) developed one or more neuropsychiatric event (total 917 events). Neuropsychiatric events attributed to SLE were 15.4% (model A) and 28.2% (model B). At enrolment 21.9% of patients had LA, 13.4% anticardiolipin, 15.1% anti-beta(2) glycoprotein-I, 9.2% anti-ribosomal P and 13.7% anti-NR2 antibodies. LA at baseline was associated with subsequent intracranial thrombosis (total n=22) attributed to SLE (model B) (HR 2.54, 95% CI 1.08 to 5.94). Anti-ribosomal P antibody was associated with subsequent psychosis (total n=14) attributed to SLE (model B) (HR 3.92, 95% CI 1.23 to 12.5, p=0.02). Other autoantibodies did not predict neuropsychiatric events. Conclusion In a prospective study of 1047 recently diagnosed SLE patients, LA and anti-ribosomal P antibodies are associated with an increased future risk of intracranial thrombosis and lupus psychosis, respectively.
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5.
  • Wang, C. H., et al. (författare)
  • InAs hole inversion and bandgap interface state density of 2 x 10(11) cm(-2) eV(-1) at HfO2/InAs interfaces
  • 2013
  • Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 103:14
  • Tidskriftsartikel (refereegranskat)abstract
    • High-k/InAs interfaces have been manufactured using InAs surface oxygen termination and low temperature atomic layer deposition of HfO2. Capacitance-voltage (C-V) curves revert to essentially classical shape revealing mobile carrier response in accumulation and depletion, hole inversion is observed, and predicted minority carrier response frequency in the hundred kHz range is experimentally confirmed; reference samples using conventional techniques show a trap dominated capacitance response. C-V curves have been fitted using advanced models including nonparabolicity and Fermi-Dirac distribution. For an equivalent oxide thickness of 1.3 nm, an interface state density D-it = 2.2 x 10(11) cm(-2) eV(-1) has been obtained throughout the InAs bandgap. (C) 2013 AIP Publishing LLC.
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9.
  • Ippolito, A., et al. (författare)
  • Autoantibodies in systemic lupus erythematosus: comparison of historical and current assessment of seropositivity
  • 2011
  • Ingår i: Lupus. - : SAGE Publications. - 0961-2033 .- 1477-0962. ; 20:3, s. 250-255
  • Tidskriftsartikel (refereegranskat)abstract
    • Systemic lupus erythematosus (SLE) is characterized by multiple autoantibodies and complement activation. Recent studies have suggested that anti-nuclear antibody (ANA) positivity may disappear over time in some SLE patients. Anti-double-stranded DNA (dsDNA) antibody titers and complement levels may vary with time and immunosuppressive treatment, while the behavior of anti-extractable nuclear antigen (ENA) over time is less well understood. This study sought to determine the correlation between historical autoantibody tests and current testing in patients with SLE. Three hundred and two SLE patients from the ACR Reclassification of SLE (AROSE) database with both historical and current laboratory data were selected for analysis. The historical laboratory data were compared with the current autoantibody tests done at the reference laboratory and tested for agreement using percent agreement and Kappa statistic. Serologic tests included ANA, anti-dsDNA, anti-Smith, anti-ribonucleoprotein (RNP), anti-Ro, anti-La, rheumatoid factor (RF), C3 and C4. Among those historically negative for immunologic markers, a current assessment of the markers by the reference laboratory generally yielded a low percentage of additional positives (3-13%). However, 6/11 (55%) of those historically negative for ANA were positive by the reference laboratory, and the reference laboratory test also identified 20% more patients with anti-RNP and 18% more with RF. Among those historically positive for immunologic markers, the reference laboratory results were generally positive on the same laboratory test (range 57% to 97%). However, among those with a history of low C3 or C4, the current reference laboratory results indicated low C3 or C4 a low percentage of the time (18% and 39%, respectively). ANA positivity remained positive over time, in contrast to previous studies. Anti-Ro, La, RNP, Smith and anti-dsDNA antibodies had substantial agreement over time, while complement had less agreement. This variation could partially be explained by variability of the historical assays, which were done by local laboratories over varying periods of time. Variation in the results for complement, however, is more likely to be explained by response to treatment. These findings deserve consideration in the context of diagnosis and enrolment in clinical trials. Lupus (2011) 20, 250-255.
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10.
  • Urowitz, M. B., et al. (författare)
  • Atherosclerotic Vascular Events in a Multinational Inception Cohort of Systemic Lupus Erythematosus
  • 2010
  • Ingår i: Arthritis Care and Research. - : Wiley. - 2151-4658 .- 2151-464X. ; 62:6, s. 881-887
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. To describe vascular events during an 8-year followup in a multicenter systemic lupus erythematosus (SLE) inception cohort and their attribution to atherosclerosis. Methods. Clinical data, including comorbidities, were recorded yearly. Vascular events were recorded and attributed to atherosclerosis or not. All of the events met standard clinical criteria. Factors associated with atherosclerotic vascular events were analyzed using descriptive statistics, t-tests, and chi-square tests. Stepwise multivariate logistic regression was used to assess the association of factors with vascular events attributed to atherosclerosis. Results. Since 2000, 1,249 patients have been entered into the cohort. There have been 97 vascular events in 72 patients, including: myocardial infarction (n = 13), angina (n = 15), congestive heart failure (n = 24), peripheral vascular disease (n = 8), transient ischemic attack (n = 13), stroke (n = 23), and pacemaker insertion (n = 1). Fifty of the events were attributed to active lupus, 31 events in 2
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