Now showing items 316-335 of 4248

    • B3LYP density functional calculations on the ground-state structure, elastic properties, and compression mechanism of α-ZrW/sub 2/O/sub 8/ 

      Figueiredo, Camila Araújo de; Perottoni, Claudio Antonio (2007) [Journal article]
      The structure of -ZrW2O8 was optimized at different pressures and its elastic constants were calculated at the B3LYP density functional level of theory. Overall, the relative stiffnesses of the atomic bonds and linkages, ...
    • Background galaxies as reddening probes throughout the Magellanic Clouds 

      Dutra, Carlos Maximiliano; Bica, Eduardo Luiz Damiani; Claria Olmedo, Juan Jose; Piatti, Andres E.; Ahumada, Andrea Veronica (2001) [Journal article]
      We study the spectral properties in the range 3600 Å - 6800 Å of the nuclear region of galaxies behind the Magellanic Clouds. The radial velocities clari ed the nature of the objects as background galaxies or extended ...
    • Backward dilepton production in color dipole and parton models 

      Gay Ducati, Maria Beatriz; Oliveira, Emmanuel Gräve de (2010) [Journal article]
      The Drell–Yan dilepton production at backward rapidities is studied in proton-nucleus collisions at Relativistic Heavy Ion Collider and LHC energies by comparing two different approaches: the kT factorization at next-to-leading ...
    • A balança de Roberval e o segredo do seu mecanismo 

      Silveira, Fernando Lang da; Axt, Rolando; Assis, Andre Koch Torres (2009) [Journal article]
      São apresentadas duas explicações teóricas sobre o funcionamento de uma balança de Roberval e de uma interessante variante dessa balança.
    • Balanceamento de linha de montagem mista em cenários com distintos mix de produtos 

      Reginato, Gustavo; Anzanello, Michel José; Kahmann, Alessandro; Schmidt, Lucas Bogdanov (2016) [Journal article]
      Linhas de montagem mista combinam a fabricação de diferentes modelos de produtos em uma única linha de montagem, proporcionando flexibilidade de produção de acordo com a sazonalidade de vendas, evitando a baixa utilização ...
    • Balmer line photometry of the 30 doradus nebula 

      Strauss, Federico Maximo; Braz, M.A.; Ducati, Jorge Ricardo (1979) [Journal article]
      The 30 Doradus nebula was scanned at 29 strips of constant declination with a square diaphragm of 30" x 30" using Hα and Hβ interference filters. The absolute flux calibration was obtained from observations of six planetary ...
    • Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model 

      Carvalho, Rubens Diego Barbosa de; Gusmao, Miguel Angelo Cavalheiro (2014) [Journal article]
      We investigate the stability of “magnetic” ordering against band-filling changes and Anderson-like disorder in the Falicov-Kimball model, within dynamical mean-field theory (DMFT). The one-particle density of states is ...
    • Band-filling effects on Kondo-lattice properties 

      Coqblin, Bernard; Lacroix, Claudine; Gusmao, Miguel Angelo Cavalheiro; Iglesias, Jose Roberto (2003) [Journal article]
      We present theoretical results for a Kondo-lattice model with spin-1/2 localized moments, including both the intrasite Kondo coupling and an intersite antiferromagnetic exchange interaction, treated within an extended ...
    • Band-gap shift of the heavily doped single- and double-donor systems Si:Bi and Si:P,Bi 

      Araújo, C. Moysés; Almeida, J. Souza de; Pepe, I.; Silva, Antonio Ferreira da; Sernelius, Bo E.; Souza, Joel Pereira de; Boudinov, Henri Ivanov (2000) [Journal article]
      The band-gap shift of the heavily single and double-donor doped systems Si:Bi and Si:P,Bi, prepared by ion implantation, was investigated theoretically and experimentally at room temperature. The calculations were carried ...
    • Band strength factors with asymptotic expansion for Morse-Pekeris oscillators 

      Gallas, Jason Alfredo Carlson; Grieneisen, Hans Peter Henrik; Chakraborty, Bijoy P. (1978) [Journal article]
      Band strength factors have been calculated by asymptotic expansion technique for N+2 (B 2 Σ+u–X 2 Σ+g) and N2(C 3πu–B 3πg) and the rotational dependences have been studied for J up to 100. A comparison between the band ...
    • B and V photometry of the metal-rich bulge globular cluster NGC 6304 

      Ortolani, Sergio; Momany, Yazan; Bica, Eduardo Luiz Damiani; Barbuy, Beatriz (2000) [Journal article]
      We presentBandVphotometry of the bulge globular cluster NGC 6304. We derive a reddening E(B-V) 0.5 and a distance from the Sun d 6 kpc. From the red giant branch morphology we estimate that the metallicity of NGC 6304 is ...
    • Barci and Stariolo reply 

      Barci, Daniel G.; Stariolo, Daniel Adrian (2007) [Journal article]
    • Um barco a vela pode ser propulsionado por um ventilador solidário ao barco que sopra em sua vela? 

      Silveira, Fernando Lang da; Endler, Antônio; De Carli, Eloir (2015) [Journal article]
    • Barkhausen noise in the reentrant system Ni(1-X) Mn(x) : a study of the power spectra 

      Sommer, Rubem Luis; Schmidt, Joao Edgar; Gomes, Affonso Augusto Guidão (1993) [Journal article]
      In this article, the power spectra of the Barkhausen noise of Ni1-x Mnx is presented. The measurements were made in the ferromagnetic phase at several temperatures and manganese concentrations in order to map the effects ...
    • Barreiras de transferência de conhecimentos entre projetos de produtos 

      Frank, Alejandro Germán; Echeveste, Marcia Elisa Soares (2011) [Journal article]
      Existem diferentes fatores que afetam a transferência de conhecimentos (TC) entre equipes de projetos de produtos. Esses fatores são denominados barreiras de TC, pois atuam como obstáculos no processo de aprendizado entre ...
    • Barrier-induced carrier localization effects in ordered/disordered/ordered quaternary quantum wells grown on GaAs substrates 

      Ribeiro, Evaldo; Bernussi, Ayrton Andre; Maltez, Rogério Luis; Carvalho Junior, Wilson; Gobbi, Angelo Luiz (2006) [Journal article]
      Optical and micro-structural properties of ordered/disordered/ordered InGaAsP quantum wells grown on GaAs substrates were investigated by photoluminescence spectroscopy, high-resolution transmission electron microscopy and ...
    • Bar star cluster in the LMC : formation history from UBV integrated photometry 

      Bica, Eduardo Luiz Damiani; Claria Olmedo, Juan Jose; Dottori, Horacio Alberto (1992) [Journal article]
      The sample of star clusters. in the LMC Bar region with integrated UBV photometry was enlarged by approximately a factor 4, totalling 129 objects. The (B- V) histogram gap between blue and red clusters disappears with this ...
    • A base of star clusters for stellar population synthesis 

      Bica, Eduardo Luiz Damiani; Alloin, Danielle Marie (1986) [Journal article]
      Integrated spectra of 63 star clusters with 106 yr ≤age ≤ 1.65 1010 yr and -2.1 [Z/Zʘ] ≤ 0.1 are presented in this paper. The useful wavelength range 3780, 7690 Å was split into 70 consecutive windows, 24-190 Å wide. The ...
    • Basin size evolution between dissipative and conservative limits 

      Rech, Paulo Cesar; Beims, Marcus Werner; Gallas, Jason Alfredo Carlson (2005) [Journal article]
      Recent methods for stabilizing systems like, e.g., loss-modulated CO2 lasers, involve inducing controlled monostability via slow parameter modulations. However, such stabilization methods presuppose detailed knowledge of ...
    • BAT AGN Spectroscopic Survey -IV. : near-infrared coronal lines, hidden broad lines and correlation with hard X-ray emission 

      Lamperti, Isabella; Koss, Michael; Trakhtenbrot, Benny; Schawinski, Kevin; Ricci, Claudio; Oh, Kyuseok; Landt, Hermine; Riffel, Rogério; Rodriguez-Ardila, Alberto; Gehrels, Neil C.; Harrison, Fiona Anne; Masetti, Nicola; Mushotzky, Richard; Treister, Ezequiel; Ueda, Yoshihiro; Veilleux, Sylvain (2017) [Journal article]
      We provide a comprehensive census of the near-infrared (NIR, 0.8–2.4 μm) spectroscopic properties of 102 nearby (z < 0.075) active galactic nuclei (AGN), selected in the hard X-ray band (14–195 keV) from the Swift-Burst ...