Now showing items 1997-2016 of 4285

    • K∗(892)0 and φ(1020) meson production at high transverse momentum in pp and Pb-Pb collisions at √ sNN = 2.76 TeV 

      Adam, Jaroslav; Gay Ducati, Maria Beatriz; Pereira, Luis Gustavo; Pezzi, Rafael Peretti; ALICE Collaboration (2017) [Journal article]
      The production of K (892)0 and φ(1020) mesons in proton-proton (pp) and lead-lead (Pb-Pb) collisions at √ sNN = 2.76 TeV has been analyzed using a high luminosity data sample accumulated in 2011 with the ALICE detector at ...
    • Kaon femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV 

      Acharya, Shreyasi; Gay Ducati, Maria Beatriz; Pereira, Luis Gustavo; Pezzi, Rafael Peretti; ALICE Collaboration (2017) [Journal article]
      We present the results of three-dimensional femtoscopic analyses for charged and neutral kaons recorded by ALICE in Pb-Pb collisions at √ sNN = 2.76 TeV. Femtoscopy is used to measure the space-time characteristics of ...
    • Kaon-nucleon scattering in an extended cloudy bag model 

      Veit, Eliane Angela; Jennings, B.K.; Barrett, R.C.; Thomas, A.W. (1984) [Journal article]
      We describe low-energy kaon-nucleon scattering by generalizing the cloudy bag model (CBM) to SU(3) chiral symmetry. We restrict our attention to I = 0, s-wave scattering. We obtain a reasonable fit to both the Zn cross ...
    • K band SINFONI spectra of two z ~ 5 submillimeter galaxy systems : upper limits to the unobscured star formation from [O II] optical emission line searches 

      Couto, Guilherme dos Santos; Colina, Luis; Piqueras López, Javier; Storchi-Bergmann, Thaisa; Arribas, Santiago (2016) [Journal article]
      We present deep SINFONI K-band integral field spectra of two submillimeter galaxy systems (SMG): BR 1202-0725 and J1000+0234, at z = 4:69 and 4:55; respectively. Spectra extracted for each object in the two systems do not ...
    • Kinectics of ion-induced transformations in β-NiAl thin films as characterized by in situ electrical resistivity measurements 

      Miranda, Rosalvo Mario Nunes; Vasconcellos, Marcos Antonio Zen; Baibich, Mario Norberto; Costa, Jose Antonio Trindade Borges da (1998) [Journal article]
      In situ electrical resistivity of thin film B-NiAl at 77 K under 120 keV Ar1 irradiation has been measured as a function of the total dose for film thickness of 25, 37.5, 50, 62.5, and 75 nm. A qualitative change was ...
    • Kinematic dynamo in random flows 

      Thompson, Mark (1990) [Journal article]
      A existência de um efeito de um dínamo rápido é demonstrado para a equação cinemática de magneto-hidrodinâmico com dependência estocástica nos fluxos aleatórios.
    • Kinematics and modeling of the inner region of M 83? 

      Rodrigues, Irapuan; Dottori, Horacio Alberto; Díaz, Rubén Joaquín; Agüero, Maria Paz; Mast, Damián (2009) [Journal article]
      Two-dimensional kinematics of the central region of M 83 (NGC 5236) were obtained through three-dimensional NIR spectroscopy with the Gemini South telescope. The spatial region covered by the integral field unit (∼ 5 ×13 ...
    • Kinematics and physical properties of southern interacting galaxies : the minor merger AM 2306–721 

      Krabbe, Angela Cristina; Pastoriza, Miriani Griselda; Winge, Claudia; Rodrigues, Irapuan; Ferreiro, Diego L. (2008) [Journal article]
      We present an observational study about the effects of the interactions in the kinematics, stellar population and abundances of the components of the galaxy pair AM2306-721. Rotation curves for the main and companion ...
    • Kinematics of the central regions of NGC 1672 

      Díaz, Rubén Joaquín; Carranza, Gustavo Jose; Dottori, Horacio Alberto; Goldes, G. (1999) [Journal article]
      We present the detailed velocity field of the central 2 kpc of the LINER galaxy NGC 1672. The iso- velocity map shows a rotational pattern with a velocity gradient of 50 km s-ˡ arcsec-ˡ in the inner 6" (1"≈ 70 pc), indicating ...
    • Kinematics with Gaia DR2 : the force of a dwarf 

      Carrillo, Ismael; Minchev, Ivan; Steinmetz, M.; Monari, Giacomo; Laporte, Chervin F. P.; Anders, Friedrich; Queiroz, Anna Bárbara de Andrade; Chiappini, C.C.M.; Khalatyan, Arman V.; Martig, Marie; McMillan, Paul; Santiago, Basilio Xavier; Youakim, Kris (2019) [Journal article]
      We use Gaia DR2 astrometric and line-of-sight velocity information combined with two sets of distances obtained with a Bayesian inference method to study the 3D velocity distribution in the Milky Way disc. We search for ...
    • Kinetic model for a polmer in one dimension 

      Martins, Jose Arthur; Stilck, Jurgen F. (1995) [Journal article]
      We consider a model for a directed polymer on a one-dimensional lattice of width 2, with attractive interactions between monomers that occupy first-neighbor sites on the lattice and are not consecutive along the chain. We ...
    • Kinetic theory of magnetized dusty plasmas with dust particles charged by collisional processes and by photoionization 

      Galvão, Renato Andrade; Ziebell, Luiz Fernando (2012) [Journal article]
      In this work, we detail the derivation of a plasma kinetic theory leading to the components of the dielectric tensor for a magnetized dusty plasma with variable charge on the dust particles, considering that the dust ...
    • KIR gene content in amerindians indicates influence of demographic factors 

      Augusto, Danilo Gardenal; Piovesan, Bruno Zagonel; Tsuneto, Luiza T.; Callegari-Jacques, Sidia Maria; Petzi-Erler, Maria Luiza (2013) [Journal article]
      Although the KIR gene content polymorphism has been studied worldwide, only a few isolated or Amerindian populations have been analyzed. This extremely diverse gene family codifies receptors that are expressed mainly in ...
    • Kn scattering in the cloudy bag model : s, p and d waves 

      Veit, Eliane Angela; Thomas, A.W.; Jennings, B.K. (1985) [Journal article]
      s-, p-, and d-wave KN phase shifts are calculated with the cloudy bag model (CBM). The results are in qualitative agreement with phase-shift analysis, except in those partial waves where exotic resonances are claimed to ...
    • Kondo-like behavior and GMR effect in granular Cu90Co10 microwires 

      Zhukova, Valentina A.; Miňo, Jakub; Del Val, Juan José; Varga, Rastislav; Martinez Pino, Gerardo Guido; Baibich, Mario Norberto; Ipatov, Mihail; Zhukov, Arkady (2017) [Journal article]
      We observed a significant increase of the giant magnetoresistance (GMR) effect (up to 32% after the adequate annealing) and Kondo-like behavior in Cu90Co10 glass-coated microwires. Observed enhancement of the GMR effect ...
    • Kosterlitz-Thouless and Potts transitions in a generalized XY model 

      Canova, Gabriel Antônio; Levin, Yan; Arenzon, Jeferson Jacob (2014) [Journal article]
      We present extensive numerical simulations of a generalized XY model with nematic-like terms recently proposed by Poderoso et al. [Phys. Rev. Lett. 106, 067202 (2011)]. Using finite size scaling and focusing on the q = 3 ...
    • Kronberger 49 : a new low-mass globular cluster or an unprecedented bulge window 

      Ortolani, Sergio; Bonatto, Charles Jose; Bica, Eduardo Luiz Damiani; Barbuy, Beatriz; Saito, Roberto K. (2012) [Journal article]
      We employ optical and near-infrared photometry to study the stars in the direction of the star cluster candidate Kronberger 49. The optical color–magnitude diagrams (V, I, and Gunn z photometry obtained with the Galileo ...
    • Labeling the oily core of nanocapsules and lipid-core nanocapsules with a triglyceride conjugated to a fluorescent dye as a strategy to particle tracking in biological studies 

      Fiel, Luana Almeida; Contri, Renata Vidor; Bica, Juliane Freitas; Figueiró, Fabrício; Battastini, Ana Maria Oliveira; Guterres, Silvia Stanisçuaski; Pohlmann, Adriana Raffin (2014) [Journal article]
      The synthesis of novel fluorescent materials represents a very important step to obtain labeled nanoformulations in order to evaluate their biological behavior. The strategy of conjugating a fluorescent dye with triacylglycerol ...
    • Laboratório de ótica : um curso de caráter formativo 

      Dionisio, Paulo Henrique (1989) [Journal article]
      É descrito um modelo de um curso de laboratório de Física básica de caráter formativo, cujos temas centrais são a dinâmica do procedimento experimental, a interação experiência-teoria, a estrutura lógica e conceitual do ...
    • La ciencia como actividad de resolución de problemas : la epistemologia de Larry Laudan y algunos aportes para las investigaciones educativas en ciencias 

      Pesa, Marta Azucena; Ostermann, Fernanda (2002) [Journal article]
      En este trabajo se analizan las concepciones epistemológicas de Larry Laudan referidas al desarrollo del conocimiento científico a fin de aportar nuevas cuestiones referidas a las nociones de racionalidad y progreso ...