629 research outputs found

    Comments On The Paper "c-erbb-2 Expression And Nuclear Pleomorphism In Canine Mammary Tumors"

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    [No abstract available]382141143Dutra, A.P., Granja, N.V.M., Schmitt, F.C., Cassali, G.D., C-erbB-2 expression and nuclear pleomorphism in canine mammary tumors (2004) Brazilian Journal of Medical and Biological Research, 37, pp. 1673-1681Clark, T.G., Bradburn, M.J., Love, S.B., Altman, D.G., Survival Analysis Part I: Basic concepts and first analyses (2003) British Journal of Cancer, 89, pp. 232-238Engelman, D.E.S., Andrade, L.A.L.A., Vassallo, J., Human papillomavirus infection and p53 protein expression in vulvar intraepithelial neoplasia and invasive squamous cell carcinoma (2003) Brazilian Journal of Medical and Biological Research, 36, pp. 1159-1165Sredni, S.T., Zerbini, M.C.N., Latorre, M.R., Alves, V.A.F., P53 as a prognostic factor in adrenocortical tumors of adults and children (2003) Brazilian Journal of Medical and Biological Research, 36, pp. 23-27Batista, S.S., Pires, R.S., Britto, L.R.G., Differential expression of AMPA-type glutamate receptor subunits during development of the chick optic tectum (2002) Brazilian Journal of Medical and Biological Research, 35, pp. 973-978Brenna, S.M.F., Zeferino, L.C., Pinto, G.A., Souza, R.A., Andrade, L.A.L.A., Vassalo, J., Martinez, E.Z., Syrjänen, K.J., C-Myc protein expression is not an independent prognostic predictor in cervical squamous cell carcinoma (2002) Brazilian Journal of Medical and Biological Research, 35, pp. 425-430Mazumdar, M., Glassman, J.R., Categorizing a prognostic variable: Review of methods, code for easy implementation and applications to decision-making about cancer treatments (2000) Statistics in Medicine, 19, pp. 113-132Clark, T.G., Bradburn, M.J., Love, S.B., Altman, D.G., Survival Analysis Part IV: Further concepts and methods in survival analysis (2003) British Journal of Cancer, 89, pp. 781-786Mazumdar, M., Smith, A., Bacik, J., Methods for categorizing a prognostic variable in a multivariable setting (2003) Statistics in Medicine, 22, pp. 559-571Streiner, D.L., Breaking up is hard to do: The heartbreak of dichotomizing (2002) Canadian Journal of Psychiatry, 47, pp. 262-266Donadieu, J., Auclerc, M.F., Baruchel, A., Prognostic study of continuous variables (white blood cell count, peripheral blast cell count, haemoglobin level, platelet count and age) in childhood acute lymphoblastic leukaemia. Analysis of a population of 1545 children treated by the French Acute Lymphoblastic Leukaemia Group (FRALLE) (2000) British Journal of Cancer, 83, pp. 1617-1622Taylor, J.M.G., Yu, M.G., Bias and efficiency loss due to categorizing an explanatory variable (2002) Journal of Multivariate Analysis, 83, pp. 248-263Metze, K., Methodological aspects of prognostic factor studies: Some caveats (1998) São Paulo Medical Journal, 116, pp. 1787-1788Metze, K., Methodological problems of grading tumour regression: Responders compared to non-responders (1998) Journal of Cancer Research and Clinical Oncology, 124, pp. 281-282Lorand-Metze, I., Pinheiro, M.P., Ribeiro, E., de Paula, E.V., Metze, K., Factors influencing survival in myelodysplastic syndromes in a Brazilian population: Comparison of FAB and WHO classifications (2004) Leukemia Research, 28, pp. 587-594Figueiras, A., Cadarso-Suarez, C., Application of nonparametric models for calculating odds ratios and their confidence intervals for continuous exposures (2001) American Journal of Epidemiology, 154, pp. 264-275Vassallo, J., Metze, K., Traina, F., de Souza, C.A., Lorand-Metze, I., The prognostic relevance of apoptosis-related proteins in classical Hodgkin's lymphomas (2003) Leukemia and Lymphoma, 44, pp. 483-488Metze, K., Souza Filho, W., Adam, R.L., Lorand-Metze, I., Analysis of the component "tree" as a new tool for analytical cellular pathology (2001) Analytical Cellular Pathology, 22, p. 65. , (Abstract)Metze, K., Adam, R.L., Silva, P.V., De Carvalho, R.B., Leite, N.J., Analysis of chromatin texture by Pinkus' approximate entropy (2004) Cytometry, 59 A (PART A), p. 63. , (Abstract)Adam, R.L., Leite, N.J., De Carvalho, R.B., Silva, P.V., Metze, K., Granulometric residues as a diagnostic tool in cytology (2004) Cytometry, 59 A (PART A), p. 63. , (Abstract)Adam, R.L., Ribeiro, E., Metze, K., Leite, N.J., Lorand-Metze, I., Morphometric and granulometric features of erythroblasts as a diagnostic tool of hematologic diseases (2004) Cytometry, 59 A (PART A), p. 46. , (Abstract

    The anomalous threshold, confinement, and an essential singularity in the heavy-light form factor

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    The analytic behavior of the heavy-light meson form factor is investigated using several relativistic examples including unconfined, weakly confined, and strongly confined mesons. It is observed that confinement erases the anomalous threshold singularity and also induces an essential singularity at the normal annihilation threshold. In the weak confinement limit, the "would be" anomalous threshold contribution is identical to that of the real singularity on its space-like side.Comment: Latex 2.09 with epsf.sty. 24 pages of text and 8 postscript figures. Postscript version of complete paper will also be available soon at http://phenom.physics.wisc.edu/pub/preprints/1997/madph-97-983 or at ftp://phenom.physics.wisc.edu/pub/preprints/1997/madph-97-98

    Solitary wave trains in granular chains: Experiments, theory and simulations

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    The features of solitary waves observed in horizontal monodisperse chain of barely touching beads not only depend on geometrical and material properties of the beads but also on the initial perturbation provided at the edge of the chain. An impact of a large striker on a monodisperse chain, and similarly a sharp decrease of bead radius in a stepped chain, generates a solitary wave train containing many single solitary waves ordered by decreasing amplitudes. We find, by simple analytical arguments, that the unloading of compression force at the chain edge has a nearly exponential decrease. The characteristic time is mainly a function involving the grains' masses and the striker mass. Numerical calculations and experiments corroborate these findings.Comment: The original publication is available at http://www.springerlink.com (related papers at http://www.supmeca.fr/perso/jobs

    Octet magnetic moments and the Coleman-Glashow sum rule violation in the chiral quark model

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    Baryon octet magnetic moments when calculated within the chiral quark model, incorporating the orbital angular momentum as well as the quark sea contribution through the Cheng-Li mechanism, not only show improvement over the non relativistic quark model results but also gives a non zero value for the right hand side of Coleman-Glashow sum rule. When effects due to spin-spin forces between constituent quarks as well as `mass adjustments' due to confinement are added, it leads to an excellent fit for the case of p, \Sigma^+, \Xi^o and violation of Coleman-Glashow sum rule, whereas in almost all the other cases the results are within 5% of the data.Comment: 5 RevTeX pages, accepted for publication in PRD(Rapid Communication

    Quantum optics in the phase space - A tutorial on Gaussian states

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    In this tutorial, we introduce the basic concepts and mathematical tools needed for phase-space description of a very common class of states, whose phase properties are described by Gaussian Wigner functions: the Gaussian states. In particular, we address their manipulation, evolution and characterization in view of their application to quantum information.Comment: Tutorial. 23 pages, 1 figure. Updated version accepted for publication in EPJ - ST devoted to the memory of Federico Casagrand

    Measurement of the B0 Lifetime and Oscillation Frequency using B0->D*+l-v decays

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    The lifetime and oscillation frequency of the B0 meson has been measured using B0->D*+l-v decays recorded on the Z0 peak with the OPAL detector at LEP. The D*+ -> D0pi+ decays were reconstructed using an inclusive technique and the production flavour of the B0 mesons was determined using a combination of tags from the rest of the event. The results t_B0 = 1.541 +- 0.028 +- 0.023 ps, Dm_d = 0.497 +- 0.024 +- 0.025 ps-1 were obtained, where in each case the first error is statistical and the second systematic.Comment: 17 pages, 4 figures, submitted to Phys. Lett.

    Heavy quarkonium: progress, puzzles, and opportunities

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    A golden age for heavy quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of related experimental activity. The early years of this period were chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in 2004, which presented a comprehensive review of the status of the field at that time and provided specific recommendations for further progress. However, the broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles could only be partially anticipated. Since the release of the YR, the BESII program concluded only to give birth to BESIII; the BB-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the deconfinement regime. All these experiments leave legacies of quality, precision, and unsolved mysteries for quarkonium physics, and therefore beg for continuing investigations. The plethora of newly-found quarkonium-like states unleashed a flood of theoretical investigations into new forms of matter such as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the spectroscopy, decays, production, and in-medium behavior of c\bar{c}, b\bar{b}, and b\bar{c} bound states have been shown to validate some theoretical approaches to QCD and highlight lack of quantitative success for others. The intriguing details of quarkonium suppression in heavy-ion collisions that have emerged from RHIC have elevated the importance of separating hot- and cold-nuclear-matter effects in quark-gluon plasma studies. This review systematically addresses all these matters and concludes by prioritizing directions for ongoing and future efforts.Comment: 182 pages, 112 figures. Editors: N. Brambilla, S. Eidelman, B. K. Heltsley, R. Vogt. Section Coordinators: G. T. Bodwin, E. Eichten, A. D. Frawley, A. B. Meyer, R. E. Mitchell, V. Papadimitriou, P. Petreczky, A. A. Petrov, P. Robbe, A. Vair

    Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 7 TeV pp collisions with the ATLAS detector

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    A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−1 of proton–proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results

    Jet size dependence of single jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector at the LHC

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    Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead-lead collisions at sqrt(s) = 2.76 TeV corresponding to an integrated luminosity of approximately 7 inverse microbarns, ATLAS has measured jets with a calorimeter over the pseudorapidity interval |eta| < 2.1 and over the transverse momentum range 38 < pT < 210 GeV. Jets were reconstructed using the anti-kt algorithm with values for the distance parameter that determines the nominal jet radius of R = 0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet "central-to-peripheral ratio," Rcp. Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. Rcp varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC.Comment: 15 pages plus author list (30 pages total), 8 figures, 2 tables, submitted to Physics Letters B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2011-02
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