Collapse Transition
Mostrando 1-12 de 44 artigos, teses e dissertações.
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1. From Sarney to Collor: politic reforms, democratization and crisis (1985- 1990 / De Sarney a Collor [manuscrito]: reformas políticas, democratização e crise (1985-1990)
Our object of study is the process of replacement of the authority institutionality by the liberal-democratic institutionality inside of Brazilian autocratic bourgeoisie State during the period of 1985 till 1990, this means, from the begining of the first civil government post Militar Dictatorship (Sarneys government) until the presidential elections of 1989
Publicado em: 2008
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2. DE SARNEY A COLLOR: REFORMAS POLÍTICAS, DEMOCRATIZAÇÃO E CRISE (1985-1990) / "From Sarney to Collor: politic reforms, democratization and crisis (1985-1990)"
Our object of study is the process of replacement of the authority institutionality by the liberal-democratic institutionality inside of Brazilian autocratic bourgeoisie State during the period of 1985 till 1990, this means, from the begining of the first civil government post Militar Dictatorship (Sarneys government) until the presidential elections of 1989
Publicado em: 2008
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3. The democracy issue in the within the framework of political theory: the battle between the liberal sham an the emancipatory perspective of marxist tradition / A questão da democracia no quadro da teoria política: a peleja entre os simulacros liberais e a perspectiva emancipatória da tradição marxista.
The social changes caused by the new stage of capitals accumulation, with the expansion of markets logic in increasingly large areas of human life (causing macroeconomic impacts that accentuate poverty, social inequality and economic inequity, causing mass unemployment, impoverishment and social exclusion in both nationally and internationally), faced by the
Publicado em: 2008
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4. Evaluation of shrinkage temperature of bovine pericardium tissue for bioprosthetic heart valve application by differential scanning calorimetry and freeze-drying microscopy
Bovine pericardium bioprosthesis has become a commonly accepted device for heart valve replacement. Present practice relies on the measurement of shrinkage temperature, observed as a dramatic shortening of tissue length. Several reports in the last decade have utilized differential scanning calorimetry (DSC) as an alternative method to determine the shrinkag
Materials Research. Publicado em: 2007-03
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5. PROPRIEDADES ESTRUTURAIS E DE BULK DE CERÂMICAS DIELÉTRICAS Ba2BiM5+O6 INVESTIGADAS UTILIZANDO SIMULAÇÕES ESTÁTICAS / STRUCTURAL PROPERTIES OF INVESTIGATED BULK DIELECTRIC CERAMICS Ba2BiM5+O6 USING STATIC SIMULATIONS
In this work we have performed static atomistic simulations to investigate the structural and bulk properties of the complex double perovskites with rock-salt ordering with the Ba2BiM+5O6 stoichiometry, where M+5 = Ta5+, Sb5+ and Nb5+, under pressure changes. For this we have adopted a Buckingham potential model for the ionic interactions and the shell model
Publicado em: 2007
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6. Estado fundamental e excitações coletivas de condensados de Bose-Einstein espinoriais / Ground state and collective excitations od spinor Bose-Einstein condensates
In the framework of the Bogoliubov theory, we determined the equilibrium configurations and the collective excitations of a homogeneous Bose-Einstein S = 1 spinor condensate, in the presence and absence of an externa1 magnetic field. In this thesis we found the equilibrium configurations as function of the parameters and m, where q is the intensity of the qu
Publicado em: 2007
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7. Survival probability of surface excitations in a 2d lattice: non-Markovian effects and survival collapse
The evolution of a surface excitation in a two dimentional model is analyzed. I) It starts quadratically up to a spreading time tS. II) It follows an exponential behavior governed by a self-consistent Fermi Golden Rule. III) At longer times, the exponential is overrun by an inverse power law describing return processes governed by quantum diffusion. At this
Brazilian Journal of Physics. Publicado em: 2006-09
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8. Nanotubos e nanobastões de oxidos e sulfetos de metais de transição obtidos via sistemas bidimensionais (lamelares) : preparação, caracterização e propriedades / Nanotubes and nanorods of transition metal oxides and sulfides obtained from bidimensional systems (layered compunds) : preparation, characteization and properties
This Thesis reports the preparation, characterization and properties of nanotubes and nanorods of transition metal oxides and sulfides obtained from bidimensional (Iamellar) structures. From the structural point view, nanotubes could be formed from bidimensional compounds by rolling its layers generating scroll-like nanotubes, or by the elimination of dangli
Publicado em: 2006
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9. Federalism, exported economy and political representation: the Amazon in the Old Republic (1889-1914) / Federalismo, economia exportadora e representação politica: o Amazonas na Republica Velha (1889-1914)
This work reviews the inclusion of the state of Amazonas in the Old Republic, from the dynamism and collapse of its main product, rubber with emphasis on three themes: Federalism, Exporting Economy and Political Representation. The review of Federalism is restricted to the tax issue, focusing the debate on the Discriminations of Revenues on the Constitution
Publicado em: 2005
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10. O papel da interação elétron-elétron no regime Hall quântico interio.
Experimental and theoretical studies of the aspects of particle-like and collective behavior of electrons in the proximity of the edges of two-dimensional (2DES) and quasi-one-dimensional (Q1DES) systems, named quantum wires (QWs), in semiconductor heterostructures reveal the important role of the electron-electron interaction on the edge states in the integ
Publicado em: 2004
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11. Mitochondria, calcium and pro-apoptotic proteins as mediators in cell death signaling
Cellular Ca2+ signals are crucial in the control of most physiological processes, cell injury and programmed cell death through the regulation of a number of Ca2+-dependent enzymes such as phospholipases, proteases, and nucleases. Mitochondria along with the endoplasmic reticulum play pivotal roles in regulating intracellular Ca2+ content. Mitochondria are e
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-02
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12. Processos de polimerização e transição de colapso em polímeros ramificados. / Polymerization processes and collapse transition of branched polymers.
The phase diagram and the tricritical point of a collapsing lattice animal are studied through an extended series expansion of the isothermal compressibility KT on a square lattice. As a function of the variables x (fugacity) and y = e1/T (T is the reduced temperature), this series KT is investigated using the partial differential approximants technique. The
Publicado em: 1997