Annihilation
Mostrando 25-36 de 77 artigos, teses e dissertações.
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25. Processamento de aço inoxidável dúplex por extrusão em canal angular
A duplex stainless steel with austeniticferritic structure, type S32205/S31803 was submitted to equal channel angular pressing, whose is based on very severe plastic deformation, at relatively low temperature, with no change in the dimensions along transversal section of the material. The processed material was heat treated at 1000 and 1200C during 7.5, 15,
Publicado em: 2009
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26. Líquido iônico [bmim.PF6] como solvente: um meio conveniente para estudos por fotólise por pulso de laser
The spectroscopic behavior of thioxanthone and benzil (diphenylethanedione or dibenzoyl) in the ionic liquid [bmim.PF6] has been investigated employing the laser flash photolysis technique. Triplet-triplet absorption spectra for these carbonyl compounds in [bmim.PF6] are similar to those observed in organic solvents. The triplet lifetime for thioxanthone in
Química Nova. Publicado em: 2009
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27. Dimer models on planar lattice. Transfer matrix and soutions by fermion representation / Modelos de dímeros em redes planas. Matriz de transferência e soluções por meio da representação de férmions
We solve the dimer model on two different planar lattices, the 4-8 lattice and the honeycomb lattice. In the dimer model on the 4-8 lattice there is a phase transition of the (two-dimensional) Ising type; on the honeycomb lattice there is a phase transition known as 3/2. After defining the model we show that the calculation of the partition function can be f
Publicado em: 2009
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28. THE CITY AND THE CHAOS: A REDING ABOUT THE CONTEMPORARY / A CIDADE E O CAOS: UMA LEITURA DO CONTEMPORÂNEO
A modern city comprises several cities within itself. A metropolis, due to its own geography, maybe doesn t admit any totalizing narrative, which can t bear a complex plurality. It is a great challenge to contemporary literature to describe the city amidst its plurality of voices. One possible answer for the question of how a city could be represented in lit
Publicado em: 2009
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29. Ações afirmativas nas universidades públicas: aportes necessários ao debate da política de cotas / Affirmative action in state universities: contributions to the debate on quota policies
The present study, besides offering a varied number of statistical data, emphasizes the theory and interpretation found in selected sources, aiming at a contribution for a comprehensive debate on the theme of the quota policy in Brazilian public universities, based on reflections about the issues of inequality, human rights, and the significance of the publi
Publicado em: 2009
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30. A teia humana: metateoria do comum, próprio e alheio da pessoa concreta, como possibilidade orgânico-opositiva, entre as verdades do sujeito e do objeto
A truth has various degrees and the truth has many facets. When we just take a fraction of it we start to hold an incomplete truth and hold human beings incomplete as such. The integral man however may be understood as a web of eight vertices. These eight dimensions of a person of flesh and blood constitute themselves in an organic dynamics and are I and : t
Publicado em: 2009
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31. O sagrado à deriva : arcaísmo e modernidade da literatura
This thesis discusses the relationship between the two basic forms of human sociality the archaic and the modern ones and artistic creation in general and literary creation in particular. In more detail, it holds up the idea according to what the essence and typical characteristics of those forms of sociality occur exemplarily in art and literature. Therefor
Publicado em: 2008
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32. Dansadamente: unidade do Corpo de bailede João Guimarães Rosa / Dansadamente: unidade do Corpo de baile de João Guimarães Rosa
This work does a critical reading of Corpo de Baile, by João Guimarães Rosa, focused on the unit of the seven independent short stories of wich it is made up. The sertão(backlands) in Corpo de Baile is a common universe in its geographical, economical, social, temporal, cultural and existential dimensions. The characters live their transitory condition as
Publicado em: 2008
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33. AvaliaÃÃo da eficÃcia do avental equivalente a 0,5 mm de chumbo em tomografia por emissÃo de PÃsitrons atravÃs de simulaÃÃes Monte Carlo / Evaluation of the effectiveness of 0.5 mm lead equivalent apron in positron emission tomography by Monte Carlo simulation
In Positron Emission Tomography (PET), medical staff is exposed to 511 keV photons, which is a result of the positron-electron annihilation process. This energy is about four times the 140 keV commonly found in studies based on Single Photon Emission Computed Tomography (SPECT). Despite these different energy levels, 0.5 mm lead equivalent aprons have being
Publicado em: 2008
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34. Marguerite Porete, teóloga do século XIII: experiência mística e teologia dogmática em O Espelho das Almas Simples de Marguerite Porete
O ponto de partida dessa pesquisa foi a obra Le Mirouer des Simples Ames de Marguerite Porete, uma beguina cleriga, da região do Reno e que, segundo consta, viveu entre a segunda metade do século XIII e início do século XIV. Uma obra instigante que traz uma contribuição importante para o pensamento filosófico-teológico e literário. Nosso objetivo, c
Publicado em: 2008
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35. Gluon dominance model and cluster production
Multiparticle production in lepton and hadron processes is studied by means of the Gluon Dominance Model (GDM) which is based on the Quantum Chromodynamics (QCD) and phenomenological scheme of hadronization. The model describes the multiplicity distributions and their moments very well. It has revealed an active role of gluons in multiparticle production and
Braz. J. Phys.. Publicado em: 2007-06
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36. Fluctuations and fermi-dirac correlations in e+e--annihilation
In this talk I first present a short review of fluctuations in e+e--annihilations. I then describe some new results on FD correlations. Experimental analyses of pp and L L correlations indicate a very small production radius. This result relies very strongly on comparisons with MC simulations. A study of the approximations and uncert
Braz. J. Phys.. Publicado em: 2007-06