Now showing items 1638-1657 of 4248

    • H-3(Lambda) and (3)((Lambda)over-bar)(H)over-bar lifetime measurement in Pb-Pb collisions at √sNN=5.02 TeV via two-body decay 

      Acharya, Shreyasi; Gay Ducati, Maria Beatriz; Pereira, Luis Gustavo; Pezzi, Rafael Peretti; ALICE Collaboration (2019) [Journal article]
      An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at √sNN =5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been ...
    • Habilidad en preguntas conceptuales y en resolución de problemas de física 

      Silveira, Fernando Lang da; Moreira, Marco Antonio; Axt, Rolando (1992) [Journal article]
      This study is described correlating the perfomance of engineering students in basically conceptual physics quizzes with their performance in physics exams constituted essentially by problem solving items. Research findings ...
    • Hall effect in Ce 1-x Y x/Pd 3 mixed-valence alloys 

      Fert, Albert R.; Pureur Neto, Paulo; Hamzic, Amir; Kappler, J.P. (1985) [Journal article]
      Mixed-valence and Kondo lattice systems exhibit large anomalous Hall coefficients with a striking change of sign at low temperature in severa! systems (CePd3, CeCu6, ... , etc.). We have studied the Hall effect of Ce1-x ...
    • Halo formation and emittance growth in the transport of spherically symmetric mismatched bunched beam 

      Silva, Thales Marques Corrêa da; Pakter, Renato; Rizzato, Felipe Barbedo; Levin, Yan (2015) [Journal article]
      The effect of an initial envelope mismatch on the transport of bunched spherically symmetric beams is investigated. A particle-core model is used to estimate the maximum radius that halo particles can reach. The theory is ...
    • Hamiltonian formulation of QED in the superaxial gauge 

      Girotti, Horacio Oscar; Rothe, Heinz J. (1982) [Journal article]
      We present a hamlltonian formulation of QED in a fully fixed axial gauge. The equal-time commutators for all field variables are computed and are shown to lead to the correct equations of motion. The constraints and gauge ...
    • Hard and soft contributions in diffraction : a closed look 

      Gay Ducati, Maria Beatriz; Goncalves, Victor Paulo Barros; Machado, Magno Valério Trindade (2001) [Journal article]
      Disentangle the hard and soft dynamics in diffractive DIS is one of the main open questions of the strong interactions. We propose the study of the logarithmic slope in Q2 of the diffractive structure function as a potential ...
    • Hardness and elasticity in cubic ruthenium dioxide 

      Leger, Jean Michel; Djemia, P.; Ganot, F.; Haines, Julian; Pereira, Altair Soria; Jornada, Joao Alziro Herz da (2001) [Journal article]
      The Knoop hardness of the highly incompressible cubic phase of ruthenium dioxide was found to be 19–20 GPa from indentation tests. This value scales well with the shear modulus approximated by the elastic constant C44 of ...
    • Hardness evaluation, stoichiometry and grain size of titanium nitride obtained with plasma nitriding on Ti-6AI-4V samples 

      Vasconcellos, Marcos Antonio Zen; Lima, Saulo Cordeiro; Hinrichs, Ruth (2010) [Journal article]
      Titanium nitride films were formed on the surface of Ti-6Al-4V discs by plasma nitriding (glow discharge) in different N2:H2 atmospheres at several substrate temperatures. In this study the influence of the process parameters ...
    • Hardware-assisted thread and data mapping in hierarchical multi-core architectures 

      Cruz, Eduardo Henrique Molina da; Diener, Matthias; Pilla, Laercio Lima; Navaux, Philippe Olivier Alexandre (2016) [Journal article]
      The performance and energy efficiency of modern architectures depend on memory locality, which can be improved by thread and data mappings considering the memory access behavior of parallel applications. In this paper, we ...
    • Hardware-assisted visibility sorting for unstructured volume rendering 

      Callahan, Steven Paul; Ikits, Milan; Comba, Joao Luiz Dihl; Silva, Cláudio Teixeira (2005) [Journal article]
      Harvesting the power of modern graphics hardware to solve the complex problem of real-time rendering of large unstructured meshes is a major research goal in the volume visualization community. While, for regular grids, ...
    • Health-related quality of life in Brazil : normative data for the SF-36 in a general population sample in the south of the country 

      Cruz, Luciane Nascimento; Fleck, Marcelo Pio de Almeida; Oliveira, Michele Rosana; Camey, Suzi Alves; Hoffmann, Juliana Feliciati; Bagattini, Ângela Maria; Polanczyk, Carisi Anne (2013) [Journal article]
      The objective of this study was to provide normative SF-36 scores in a general population sample in Brazil and to describe differences in mean scores according to socio-demographic characteristics. The SF-36 questionnaire ...
    • Health-related quality of life of pregnant women with heartburn and regurgitation 

      Dall'Alba, Valesca; Callegari-Jacques, Sidia Maria; Krahe, Cláudio; Bertani, Juliana Paula Bruch; Alves, Bruna Cherubini; Barros, Sergio Gabriel Silva de (2015) [Journal article]
      Background - Heartburn and regurgitation frequently occur in the third trimester of pregnancy, but their impact on quality of life has not been thoroughly investigated. Objective - To measure health-related quality of life ...
    • Heavy meson photoproduction in peripheral AA collisions 

      Gay Ducati, Maria Beatriz; Martins, Sony (2018) [Journal article]
      The exclusive photoproduction of the heavy vector mesons ψ and Y is investigated in peripheral Pb-Pb collisions for the energies available at the LHC, ffiffiffi sp ¼ 2.76 TeV and ffiffiffi ps ¼ 5.02 TeV. To evaluate the ...
    • Heavy quark photoproduction in proton-proton collisions 

      Goncalves, Victor Paulo Barros; Machado, Magno Valério Trindade (2005) [Journal article]
      We calculate the photoproduction of heavy quarks in proton-proton collisions at RHIC, Tevatron, and CERN LHC energies, where the photon reaches energies larger than those accessible at DESY-HERA. The integrated cross section ...
    • Heavy quark photoproduction in the k/sub [momento transverso]/-factorization approach 

      Mariotto, Cristiano Brenner; Gay Ducati, Maria Beatriz; Machado, Magno Valério Trindade (2002) [Journal article]
      We investigate heavy quark photoproduction based on the k'-factorization approach, focusing on the results from the saturation model. The deviations between the results using the unintegrated gluon distribution considering ...
    • Heterogeneities in aging models of granular compaction 

      Arenzon, Jeferson Jacob (2006) [Journal article]
      Kinetically constrained models (KCM) are systems with trivial thermodynamics but often complex dynamical behavior due to constraints on the accessible paths followed by the system. Exploring these properties, the Kob-Andersen ...
    • Heterogeneous update mechanisms in evolutionary games : mixing innovative and imitative dynamics 

      Amaral, Marco Antonio; Javarone, Marco Alberto (2018) [Journal article]
      Innovation and evolution are two processes of paramount relevance for social and biological systems. In general, the former allows the introduction of elements of novelty, while the latter is responsible for the motion of ...
    • Heuristic model for the energy spectrum of phase turbulence 

      Medeiros, Joacir Thadeu Nascimento; Simoes, Acirete Souza da Rosa (2001) [Journal article]
      We present a heuristic model for the energy spectrum of the one-dimensional phase turbulence in the steady state of the Kuramoto-Sivashinsky equation. Our model contains an energy transfer mechanism from low- to high-wave-vector ...
    • Heywood cases in unrestricted factor analysis 

      Fachel, Jandyra Maria Guimarães (1990) [Journal article]
      Resumo não disponível
    • Hidden trigger for the giant starburst arc in M83? 

      Díaz, Rubén Joaquín; Dottori, Horacio Alberto; Agüero, Maria Paz; Mediavilla, Evencio; Rodrigues, Irapuan; Mast, Damián (2006) [Journal article]
      The huge star formation events that occur at some galactic centers do not provide enough clues as to their origin, since the morphological signatures of the triggering mechanism are smeared out in the timescale of a few ...