Now showing items 5555-5574 of 5887

    • Tópicos de física contemporânea no ensino médio : um texto para professores sobre supercondutividade 

      Ostermann, Fernanda; Ferreira, Leticie Mendonca; Cavalcanti, Claudio Jose de Holanda (1998) [Journal article]
      Este artigo é dirigido a professores de Física do ensino médio com o objetivo de tratar um tópico de Física Contemporânea - supercondutividade - não só no contexto dos conteúdos trabalhados na escola média, mas também a ...
    • Topological hypothesis on phase transitions : the simplest case 

      Teixeira, Ana Carolina Ribeiro; Stariolo, Daniel Adrian (2004) [Journal article]
      We critically analyze the possibility of finding signatures of a phase transition by looking exclusively at static quantities of statistical systems, like, e.g., the topology of potential energy submanifolds (PES’s). This ...
    • Topological model of homoclinic chaos in a glow discharge 

      Braun, Thomas; Correia, Ricardo Rego Bordalo; Altmann, Nara (1995) [Journal article]
      We perform a topological analysis of homoclinic chaos in an experimental dynamical system: the glow discharge (GD). The geometrical model accounting for the stretching and folding mechanisms in the GD attractor is the ...
    • Topological theory of magnetism in nanostructured ferromagnets 

      Holz, Arno; Scherer, Claudio (1994) [Journal article]
      It is postulated that in nanostructured ferromagnets, e.g., Ni, Fe, and Co, exchange and magnetostatic energy dominate crystalline anisotropy energy and therefore the usual domain structure imposed via anisotropy is replaced ...
    • Topology of collisionless relaxation 

      Pakter, Renato; Levin, Yan (2013) [Journal article]
      Using extensive molecular dynamics simulations we explore the fine-grained phase space structure of systems with long-range interactions. We find that if the initial phase space particle distribution has no holes, the final ...
    • Topology, phase transitions, and the spherical model 

      Risau Gusman, Sebastian Luis; Teixeira, Ana Carolina Ribeiro; Stariolo, Daniel Adrian (2005) [Journal article]
      The topological hypothesis states that phase transitions should be related to changes in the topology of configuration space. The necessity of such changes has already been demonstrated. We characterize exactly the topology ...
    • Toward a general software infrastructure for ubiquitous computing 

      Costa, Cristiano Andre da; Yamin, Adenauer Correa; Geyer, Claudio Fernando Resin (2008) [Journal article]
    • Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models 

      Romero, Alejandra Daniela; Córsico, Alejandro Hugo; Althaus, Leandro Gabriel; Kepler, Souza Oliveira; Castanheira, Bárbara Garcia; Bertolami, Marcelo Miguel Miller (2012) [Journal article]
      ZZ Ceti stars form the most numerous group of degenerate variable stars. They are otherwise normal DA (H-rich atmospheres) white dwarfs that exhibit pulsations. Here, we present an asteroseismological analysis for 44 bright ...
    • Towards a census of the Galactic anticentre star clusters : colour–magnitude diagram and structural analyses of a sample of 50 objects 

      Camargo, Denilso da Silva; Bonatto, Charles Jose; Bica, Eduardo Luiz Damiani (2010) [Journal article]
      Aims. In this work we investigate the nature of 50 overdensities from the catalogue of Froebrich, Scholz, and Raftery (FSR) projected towards the Galactic anticentre, in the sector 160º ≤ l ≤ 200º. The sample contains ...
    • Towards a census of the Galactic anticentre star clusters – II. Exploring lower overdensities 

      Camargo, Denilso da Silva; Bonatto, Charles Jose; Bica, Eduardo Luiz Damiani (2012) [Journal article]
    • Towards a census of the Galactic anticentre star clusters – III. Tracing the spiral structure in the outer disc 

      Camargo, Denilso da Silva; Bica, Eduardo Luiz Damiani; Bonatto, Charles Jose (2013) [Journal article]
      In this paper, we investigate the nature of 27 star cluster candidates, most of them projected towards the Galactic anticentre. We derive fundamental parameters for 20 confirmed clusters, among these 7 are new identifications. ...
    • Towards a consistent noncommutative supersymmetric Yang-Mills theory : superfield covariant analysis 

      Ferrari, Alysson Fábio; Girotti, Horacio Oscar; Gomes, Marcelo; Petrov, Albert Yu.; Ribeiro, Anderson Andre Genro Alves; Rivelles, Victor O.; Silva, Adilson J. da (2004) [Journal article]
      Commutative four dimensional supersymmetric Yang-Mills (SYM) theory is known to be renormalizable for N=1,2, and finite for N=4. However, in the noncommutative version of the model the UV/IR mechanism gives rise to infrared ...
    • Towards a pure ZZ Ceti instability strip 

      Castanheira, Bárbara Garcia; Kepler, Souza Oliveira; Costa, Alex Fabiano Murillo da; Giovannini Junior, Odilon; Robinson, E.L.; Winget, Donald Earl; Kleinman, Scot James; Nitta, Atsuko; Eisenstein, D.J.; Koester, Detlev; Santos, Marcio Gabriel dos (2007) [Journal article]
      Context. We have observed again two stars inside the ZZ Ceti instability strip that were previously classified as not-observed-to-vary (NOV) by Mukadam et al. (2004) and found them to be low-amplitude variables. Some ...
    • Towards the understanding of the genuine three-body interaction for p–p–p and p–p–Λ 

      Acharya, Shreyasi; Gay Ducati, Maria Beatriz; Pereira, Luis Gustavo; ALICE Collaboration (2023) [Journal article]
      Three-body nuclear forces play an important role in the structure of nuclei and hypernuclei and are also incor porated in models to describe the dynamics of dense baryonic matter, such as in neutron stars. So far, only ...
    • TPVs PA/NBR : sistema de reticulação e propriedades 

      Fagundes, Enio César Machado; Jacobi, Marly Antonia Maldaner (2012) [Journal article]
      Elastômeros termoplásticos vulcanizados, TPVs, à base de co-poliamida (PA6,6-6) e borracha nitrílica (NBR), foram preparados por vulcanização dinâmica em câmara de mistura a partir de um sistemas de vulcanização tendo como ...
    • Traçando um perfil para o professor de Física da Educação Básica : o que preconiza a legislação brasileira? 

      Pinheiro, Lisiane Araújo; Massoni, Neusa Teresinha (2021) [Journal article]
      O presente texto compõe uma pesquisa mais abrangente que, no âmbito de uma tese de doutorado, pretende refletir a formação inicial de professores de Física no Brasil. Este artigo discute o perfil do educador de Física a ...
    • Trace analysis of carbazole in commercial diesel by using adsorption on activated biochar from rice husk pyrolysis 

      Maciel, Gabriela Pereira da Silva; Lazzari, Eliane; Bjerk, Thiago Rodrigues; Ahmad, Samir M.; Carvalho, Ana Paula Baptista de; Nogueira, José Manuel Florêncio; Caramão, Elina Bastos (2017) [Journal article]
      The valorization of rice husk biochar obtained by pyrolysis was studied by production high quality activated carbon. Activated carbon (AC) chemically treated by K2CO3, was used as sorbent phase in bar adsorptive microextraction ...
    • Trace of broken integrability in stationary correlation properties 

      Brouzos, Ioannis; Foerster, Angela (2014) [Journal article]
      We show that the breaking of integrability in the fundamental one-dimensional model of bosons with contact interactions has consequences on the stationary correlation properties of the system. We calculate the energies and ...
    • Tracing the galactic spiral structure with embedded clusters 

      Camargo, Denilso da Silva; Bonatto, Charles Jose; Bica, Eduardo Luiz Damiani (2015) [Journal article]
      In this work, we investigate the properties of 18 embedded clusters (ECs). The sample includes 11 previously known clusters and we report the discovery of seven ECs on WISE images, thus complementing our recent list of 437 ...
    • Tracks and voids in amorphous Ge induced by swift heavy-ion irradiation 

      Ridgway, M.C.; Bierschenk, Thomas; Giulian, Raquel; Afra, Boshra; Rodriguez, M. D.; Araújo, Leandro Langie; Byrne, A. P.; Kirby, Nigel; Pakarinen, O. H.; Djurabekova, F.; Nordlund, K.; Schleberger, M.; Osmani, O.; Medvedev, N.; Rethfeld, B.; Kluth, Patrick (2013) [Journal article]
      Ion tracks formed in amorphous Ge by swift heavy-ion irradiation have been identified with experiment and modeling to yield unambiguous evidence of tracks in an amorphous semiconductor. Their underdense core and overdense ...