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Browsing Mestrado em Física (Dissertações) by Issue Date

Browsing Mestrado em Física (Dissertações) by Issue Date

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  • Freitas, Alysson Miranda de; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4219923H6 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2010-09-13)
    The aim of this study is to determine the thermal diffusivity of nanostructured aluminosilicate glasses with silver nanoparticles and doped with ions of Er+3 using the technique of Thermal Lens Spectroscopy. It was found ...
  • Oliveira, Erichardson Tarocco de; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4228461E4 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2010-09-14)
    As is well known, quantum fields studied in TQC satisfy the second principle of locality of space-time points. To them, refer to fields that have location-point type or that are located punctate. In this dissertation, will ...
  • Goulart, Marcelo Moreira; http://lattes.cnpq.br (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-01-19)
    Were obtained in this work values of total cross-section (TCS) of electron impact on methane and ethane using a device developed at the Atomic and Molecular Spectroscopy Laboratory (LEAM) - DF - UFJF employing the linear ...
  • Salles, Filipe de Oliveira; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4744804Y1 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-02-15)
    The need to consider quantum effects and the presence of singularities in the solutions of general relativity indicate the desire necessary to study different models of modified gravity. In addition there is a hope of using ...
  • Zangirolami, Adriano de Oliveira; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4211595E4 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-02-15)
    In the Doplicher, Fredenhagen, Roberts and Amorim (DFRA) noncommutative (NC) space, which is an extension of the DFR space, the object of noncommutativity (θij) is a variable of the NC system and has a canonical conjugate ...
  • Souza, Cleber Abrahão de; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4713891T3 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-02-28)
    The general relativity theory is fundamental tool for understanding the modern cosmology. In this work we investigated the massless Dirac fields in the Friedamm-Lamaitre-Robertson-Walker universe. The metric is written in ...
  • Neves, Rafael Felipe Coelho; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4227660P4 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-07-22)
    In a variety of spectroscopic techniques of electron impact on gaseous samples, it is essential to use electron beams of low energy focused, collimated and monochromatized. The electron beam intensity should be such that ...
  • Oliveira, Raphael Taligliatt de; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4238302E6 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-07-29)
    In order to establish an experimental research line on Atomic Collisions (study of ion/atom, molecule scattering) and Surface Physics (implantation of techniques of surface analysis by impact of ions) at the Physics ...
  • Mendes, Thiago de Oliveira; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4128263Y9 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-08-05)
    The quantification of the constituents of milk is crucial for the establishment of its nutritional quality, fitness for human consumption and market value of the product. It is estimated that milk has approximately 100,000 ...
  • Andrade, Alcides Farias; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4753890E0 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-08-25)
    We study a dislocation defect with spherical symmetry. We find the metric for a medium containing a single deformation of this kind. For this, we calculate the displacement vector through the linear theory of elasticity and ...
  • Silva, José Henrique; http://lattes.cnpq.br/ (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-11-09)
    In recent years, to study the behavior of magnetization in magnetic nanodisks has attracted the attention of many researchers in nanomagnetism. Due to the possibility of nanodisks to present a state of magnetization with ...
  • Lima Neto, Felix Soares de; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4335207P3 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-11-28)
    In this work we studied borosilicate glasses doped with nanoparticles of sulfur and Er3+ ions in order to determine the thermal diffusivity of the glassy system (SNABP), using the thermal lens technique. The spectroscopic ...
  • Santos, Evandro Bastos dos; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4200239E7 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2011-11-28)
    In the last decades much work in thin magnetic films has been motivated by several interesting properties associated with interfaces involving magnetic materials. The key to the understand these magnetic structures is ...
  • Mauro Filho, Sebastião; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4479825T7 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2012-02-29)
    Recently it was shown that quantum corrections to the Newton potential can explain the rotation curves in spiral galaxies without introducing the Dark Matter halo. The unique phenomenological parameter aѵ of the theory ...
  • Teixeira, Poliane de Morais; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4559395A5 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2012-02-29)
    Some aspects of Quantum Field Theory in curved space-time are explored and revised. In the original part of the work, we study the Hermitian operator of fourth order, known as Paneitz operator. We obtaining it via conformal ...
  • Gonçalves, Alison Arantes; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4413479T6 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2012-03-08)
    We present a theory for obtaining the inelastic light scattering cross section, Raman scattering, at T = OK temperature in a quasi-bidimensional electron gas formed by the GaAs-A1GaAs semiconductor heterostructure doped ...
  • Costa, Lyane Marise Moreira Rocha; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4214122Y6 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2012-03-09)
    This work was intended to study the influences of nanostructured materials in thermal transport in liquid medium and the applicability of these new materials as heat dissipation media. We studied aqueous nanofluids containing ...
  • Duque, Humberto Vargas; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4460312T1 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2012-06-19)
    This work describes the development, implementation and characterization of a Cylindrical Dispersive Analyzer 1270 on a Electron Energy Loss Spectrometer (EELS) operating in the region of impact energy from 10 to 200eV, ...
  • Rodrigues, Tiago Mendes; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4249249U3 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2012-07-02)
    The construction of a low energy particle accelerator at the Physics Department of Federal University of Juiz de Fora has the aim of establishing at this department an experimental research line on atomic collisions and ...
  • Silva, Gabriel de Lima e; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4491229Z6 (Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em FísicaUFJF, 2012-08-21)
    In this work we discuss the two-dimensional isotropic Heisenberg model from the constrained systems point of view. We present this system as a theory which has not gauge invariance. The concept of gauge invariance is very ...