Mickey Sabbath: A pulsão de morte e o desligamento numa personagem literária

Dissertação de Mestrado apresentada no Instituto Superior de Psicologia Aplicada, para obtenção do grau de Mestre na especialidade de Psicologia Clínica

Boris fausto : história e historiografia : o fazer-se de um historiador da república em interlocução com as ciências sociais

Tese (doutorado)—Universidade de Brasília, Instituto de Ciências Humanas, Departamento de História, Programa de Pós-Graduação em História, 2016.

O capital fictício e crise econômica : visões para um novo paradigma

Este artigo tem o propósito inicial de conceituar o que é capital fictício e questionar seu papel na narrativa econômica ortodoxa. Outro objetivo é demonstrar os efeitos prejudiciais deste capital no Brasil. O capital fictício é toda rentabilidade proveniente da valoração derivada e artificial de um capital aplicado, já sem atuação na produção. Sua presença massiva sinaliza uma contradição interna no capitalismo atual, ainda que o pensamento convencional continue a se basear na crença de que crises econômicas são decorrentes de eventos exógenos e inesperados. A crise provém não de eventos aleatórios ou ao acaso, mas da dissociação entre circulação e produção, o que possibilita seu surgimento. Deste modo, a primeira parte deste artigo analisa a teoria do valor e do capital fictício como expressa por Marx e a heterodoxia; a segunda parte busca elucidar suas principais implicações para o caso brasileiro, e questiona a fé irrevogável que a ortodoxia tem na narrativa de crises supostamente surgidas de modelos de equilíbrio. _________________________________________________________________________________ ABSTRACT

En veinte años, los sueños de Fausto se hicieron concierto

Fondo Margaritainés Restrepo

Conformation-Changing Aggregation in Hydroxyacetone: A Combined Low-Temperature FTIR, Jet, and Crystallographic Study

Aggregation in hydroxyacetone (HA) is studied using low-temperature FTIR, supersonic jet expansion, and X-ray crystallographic (in situ cryocrystallization) techniques. Along with quantum chemical methods (MP2 and DFT), the experiments unravel the conformational preferences of HA upon aggregation to dinners and oligomers. The O-H center dot center dot center dot O=C intramolecular hydrogen bond present in the gas-phase monomer partially opens upon aggregation in supersonic expansions, giving rise to intermolecular cooperatively enhanced O-H center dot center dot center dot O-H hydrogen bonds in competition with isolated O-H center dot center dot center dot O=C hydrogen bonds. On the other hand, low-temperature IR studies on the neat solid and X-ray crystallographic data reveal that HA undergoes profound conformational changes upon crystallization, with the HOCC dihedral angle changing from similar to 0 degrees in the gas phase to similar to 180 degrees in the crystalline phase, hence giving rise to a completely new conformation. These conclusions are supported by theoretical calculations performed on the geometry derived from the crystalline phase.

Selenium adsorption on Au(111) and Ag(111) surfaces: adsorbed selenium and selenide films

Results of a high resolution photoemission and electrochemistry study of Se adsorption Au(111) and Ag(111) surfaces performed by immersion of pristine samples into an aqeuous solution of Na2Se are presented. Cyclic voltammetry on Au shows formation of selenium adsorbed species and the structures observed in reductive desorption are to the atomic and polymeric species observed in XPS. In the case of Au(111) XPS spectra in the Se(3d) region indeed show two main features attributed to Se chemisorbed atomically and polymeric Se-8 features.' Smaller structures due to other types of Se conformations were also observed. The Au(4f) peak line, shape does not show core level, shifts: indicative of Au selenide formation the case of silver, XPS spectra for the Ag(3d) show a broadening of the peak and a deconvolution into Ag-B bulk like Ag-Se components shows that the Ag-Se is located at a lower binding energy, an effect similar to oxidation and sulfidation of Ag. The Se(3d) XPS spectrum is found to be substantially different from the Au case and dominated by atomic type Se due to the selenide, though a smaller intensity Se structure at an energy similar to the Se-8 structure for Au is also observed. Changes in the valence band region. related to Se adsorption are reported.

Low temperature FTIR, Raman, NMR spectroscopic and theoretical study of hydroxyethylammonium picrate

A combined experimental (infrared, Raman and NMR) and theoretical quantum chemical study is performed on the charge-transfer complex hydroxyethylammonium picrate (HEAP). The infrared (IR) spectra for HEAP were recorded at various temperatures, ranging from 16 K to 299 K, and the Raman spectrum was recorded at room temperature. A comparison of the experimental IR and Raman spectra with the corresponding calculated spectra was done, in order to facilitate interpretation of the experimental data. Formation of the HEAP complex is evidenced by the presence of the most prominent characteristic bands of the constituting groups of the charge-transfer complex e.g., NH3+, CO- and NO2]. Vibrational spectroscopic analysis, together with natural bond orbital (NBO) and theoretical charge density analysis in the crystalline phase, was used to shed light on relevant structural details of HEAP resulting from deprotonation of picric acid followed by formation of a hydrogen bond of the N-H center dot center dot center dot OC type between the hydroxyethylammonium cation and the picrate.C-13 and H-1 NMR spectroscopic analysis are also presented for the DMSO-d(6) solution of the compound revealing that in that medium the HEAP crystal dissolves forming the free picrate and hydroxyethylammonium ions. Finally, the electron excitation analysis of HEAP was performed in an attempt to determine the nature of the most important excited states responsible for the NLO properties exhibited by the compound. (C) 2015 Elsevier B.V. All rights reserved.

Case studies on the formation of chalcogenide self-assembled monolayers on surfaces and dissociative processes

This report examines the assembly of chalcogenide organic molecules on various surfaces, focusing on cases when chemisorption is accompanied by carbon-chalcogen atom-bond scission. In the case of alkane and benzyl chalcogenides, this induces formation of a chalcogenized interface layer. This process can occur during the initial stages of adsorption and then, after passivation of the surface, molecular adsorption can proceed. The characteristics of the chalcogenized interface layer can be significantly different from the metal layer and can affect various properties such as electron conduction. For chalcogenophenes, the carbon-chalcogen atombond breaking can lead to opening of the ring and adsorption of an alkene chalcogenide. Such a disruption of the pi-electron system affects charge transport along the chains. Awareness about these effects is of importance from the point of view of molecular electronics. We discuss some recent studies based on X-ray photoelectron spectroscopy that shed light on these aspects for a series of such organic molecules.

Memórias de um sargento de milícias

Única obra literária de Manuel Antônio de Almeida, este romance, publicado nos anos de 1854 e 1855, relata as desventuras e aventuras do personagem Leonardo, abandonado pelos pais e criado por um padrinho. Com refinada ironia e sentido crítico, o autor revela costumes e cenas do Rio de Janeiro da primeira metade do século XIX, sobretudo das zonas pobres da cidade.

Alternativas para reduzir o valor da conta de consumo de combustíveis fósseis - CCC

Consultoria Legislativa - Área XII - Recursos Minerais, Hídricos e Energéticos.

Comentários ao projeto de lei geral das agências reguladoras [PL n. 3.337/2004]

Consultoria Legislativa - Área XII - Recursos Minerais, Hídricos e Energéticos.

A geração de energia elétrica e a preservação do meio ambiente no Brasil

Analisa ageração de energia elétrica e a preservação do meio ambiente no Brasil face ao desenvolvimento sustentável.