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Comportamento relaxor de polímeros ferroelétricos submetidos a radiações eletromagnéticas
(Universidade Federal de Minas GeraisUFMG, 2008-04-25)
Electromagnetic radiation effects onto poly (vinylidene fluoride-trifluoroethylene), P(VDFTrFE) copolymers are studied. It is demonstrated that high energy (gamma radiation, E = 1250 keV ) and low energy (ultraviolet ...
Magnetotunelamento e tunelamento foto-assistido ressonante em multipoços quânticos
(Universidade Federal de Minas GeraisUFMG, 1998-02-02)
This work is divided in three parts: An investigation of the electronic transport in a superlattice of thick barriers with the presence of Terahertz radiation. We looked for a resonant behavior of the radiation energy and ...
Síntese de campos sonoros através dos modos de radiação ativos e reativos de arranjos planares de fontes acústicas
(Universidade Federal de Minas GeraisUFMG, 2018-12-20)
This work investigates how the active and reactive radiation modes of planar loudspeaker arrays can be used in the synthesis of sound fields generated by plane waves impinging on a rigid flat panel, as well as in the ...
Radiative coupling between quantum dots in photonic crystal molecules
(Universidade Federal de Minas GeraisUFMG, 2016-07-18)
In the present work, we theoretically address the possibility of usingstrongly coupled photonic crystal molecules to efficiently increasethe mutual coupling rate between two quantum dots at large interdotdistances. The ...
Caracterização do perfil protéico e da atividade mitocondrial de Trypanosoma cruzi sob o estresse de radiação gama
(Universidade Federal de Minas GeraisUFMG, 2014-05-16)
The Trypanosoma cruzi is considered as one of the eukaryotes most resistant to ionizing radiation, enduring sub-lethal doses of up to 1.0 kGy. The ionizing radiation by gamma rays promotes double-strand and single-strand ...
Mapeamento do fluxo e estimativa do termo fonte de radiação de campos neutrônicos gerados pelo cíclotron GE PETtrace-8
(Universidade Federal de Minas GeraisUFMG, 2017-06-27)
The use of spectrometric techniques in a cyclotron facility is strongly advised for the complete characterization of the neutron radiation field. In recent years, several studies of neutron spectrometry have been carried ...
Modelagem computacional aplicada à solução de problemas de interação eletromagnética
(Universidade Federal de Minas GeraisUFMG, 2007-04-10)
In this thesis, the Finite Element Method is applied to handle the radiation and scattering problems present in automotive electromagnetic susceptibility tests. First, radiation and scattering are treated as two different ...
Desinfecção de efluente sanitário por radiação UV e Gama: efeitos na inativação de ovos de Ascaris SPP
(Universidade Federal de Minas GeraisUFMG, 2011-07-25)
This research aimed to investigate the inactivation of Ascaris spp. eggs during disinfection of domestic sewage by the action of ultraviolet radiation in submerged and emerged lamp demoscale photoreactors, and gamma radiation ...
Estudos fitoquímicos e dos efeitos da radiação gama em Echinodorus macrophyllus (chapéu-de-couro) e em óleos essenciais de Inga laurina e Eucalyptus grandis (eucalipto)
(Universidade Federal de Minas GeraisUFMG, 2014-08-21)
The plant materials are usually used in the popular medicine with a high degree of microbiological contamination. There are several methods for microbial decontamination of herbal products and gamma radiation has been an ...
Alterações em cinética temporal da expressão de proteínas plasmáticas in vivo e da viabilidade celular in vitro, induzidas pelas radiações ionizantes
(Universidade Federal de Minas GeraisUFMG, 2016-07-12)
Human existence on planet Earth has as one of its foundations adaptation of our body to radiation, such as solar and fund specific to each environment in which we live. So due to radiation exposure, our body has undergone ...