14 resultados para G3764.C2 1913 .W3
em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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The bridged sulphate complex [Pd2 (C2,dmba) (μ-SO4) (SO2)2] has been obtained by reacting a saturated solution of SO2 in methanol and the cyclometallated compound [Pd(C2,N-dmba)(μ-N3)]2; (dmba = N,N-dimethylbenzylamine), at room temperature for 24 h. Reaction product was characterized by elemental analysis, NMR comprising 13C{1H} and 1H nuclei and I.R. spectrum's measurements. Thermal behavior has been investigated and residual products identified by X-ray powder diffraction.
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This paper reports the construction of an axisymmetric nonpremixed piloted jet burner, with well-defined initial and boundary conditions, known as the Delft burner, to assess turbulence-chemistry interaction in non-premixed turbulent flames. Detailed experimental information is described, involving hot-wire anemometry, thin-wire thermocouples and chemiluminescence visualization measurements. Radial profile of the axial mean velocity indicates excellent agreement between flow patterns developed within Delft installation and the one described herein. Chemiluminescence emissions from CH and C2 free-radicals were acquired with a CCD camera. Tomography reconstruction analysis was utilised to compare radical emissions and temperature spatial distributions. There was a strong dependence between temperature and CH/C 2 emissions. This is an indication that these radicals can be used in flame front studies.
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The cyclopalladated complex [Pd(C2,N-dmba)(μ-SCN)]2, where dmba = N,N-dimethylbenzylamine, was structurally characterized by single-crystal X-ray diffraction. This compound crystallizes in the monoclinic system, space group P21/n with a = 9.578(1)Å, b = 12.323(2)Å, c = 10.279(2)Å, β = 117.03(1)°, V = 1080.7(3)Å3, Z = 2. Each Pd(II) center displays a distorted square-planar coordination environment, formed by the C and N atoms from the dmba ligand, and one set of N and S atoms from the bridging SCN groups. 2009 © The Japan Society for Analytical Chemistry.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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A bounded upwinding scheme for numerical solution of hyperbolic conservation laws and Navier-Stokes equations is presented. The scheme is based on convection boundedness criterion and total variation diminishing stability criteria and developed by employing continuously differentiable functions. The accuracy of the scheme is verified by assessing the error and observed convergence rate on 1-D benchmark test cases. A comparative study between the new scheme and conventional total variation diminishing/convection boundedness criterion-based upwind schemes to solve standard nonlinear hyperbolic conservation laws is also accomplished. The scheme is then examined in the simulation of Newtonian and non-Newtonian fluid flows of increasing complexity; a satisfactory agreement has been observed in terms of the overall behavior. Finally, the scheme is used to study the hydrodynamics of a gas-solid flow in a bubbling fluidized bed. © 2013 John Wiley & Sons, Ltd.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Letras - FCLAS
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A minha proposta neste texto é apresentar os procedimentos de leitura de álbum de postais que pertenceu a uma ítalo-brasileira, o qual contém cartões postais recebidos entre 1911 e 1942. Mostro que, além das imagens e dos textos que traz, esse álbum é acima de tudo uma construção da memória de si, no caso a memória de sua autora: Carolina Attanasio. Sua leitura permite ter acesso privilegiado à sensibilidade de um período, propiciando entender de forma mais aguda como se articula vida pessoal com acontecimentos mais gerais.
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A fase compreendida pelos historiadores como fase de consolidação ou profissionalização da imprensa, início da República até a década de 30, corresponde a um período relevante da atuação do escritor Monteiro Lobato (1882-1948) como jornalista. O intuito de se abordar os artigos publicados no jornal O Estado de S. Paulo, periódico fundado em 1875 como baluarte das questões ideológicas republicanas, permite situar o início da produção de Lobato em 1913. O limite de 1930 justifica-se pelo momento histórico, ou seja, a transição de um país rural para um estado em franca urbanização com o advento da era Vargas. Como veículo fugaz, o jornal apresenta-se como oportunidade para se rever uma faceta menos literária do escritor. A observação do conjunto de textos produzidos como artigos para O Estado entre os anos de 1913 e 1923 revela um escritor em fina sintonia com o veículo do qual participava e ajudava a construir, fosse na esfera dos ideais, fosse no círculo das atividades exercidas dentro do jornal. Lobato é, com efeito, um jornalista participando ativamente dos ideais políticos e sociais de um grupo cuja influência extrapolava a tão autoproclamada neutralidade do jornal. Havia um projeto de país em boa parte comum a escritor e jornal, ou melhor, entre o publicista atento e o periódico bem sucedido. Uma velha praga, Urupês ou o quase não lembrado Entre duas crises são textos que, postos lado a lado e lidos na seqüência e freqüência que surgem em O Estado, compõem um mosaico esclarecedor da visão projetada por Lobato e por um grupo de intelectuais cuja ação pública, política, identifica-os como grupo do Estado
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Non-intrusive methods of diagnosis, such as spectral analysis of the radiation emitted by the system, have been used as a viable alternative for determining the temperature of combustion systems. Among them, the determination of temperature by natural emission spectroscopy has the advantage of requiring relatively simple experimental devices. Once Chemiluminescent species are formed directly in the excited state, the collection and recording of radiation emission spectrum is enough to determine the temperature (CARINHANA, 2008). In this study we used the process of making direct comparisons between the experimental spectra obtained in the laboratory from the plasma of alcohol, and the theoretical spectra plotted from a computer program developed at the IEAv. The objective was to establish a fast and reliable method to measure the rotational temperature of the radical C2*. The results showed that the temperature of the plasma, which in turn can be taken as the rotational temperature of the system, is proportional to the pressure. The temperature values ranged from ca. 2300 ~ 2500 K at a pressure of 19 mmHg to 3100 ~ 3500 K for the pressure of 46 mmHg. The temperature values are somewhat smaller when we consider the theoretical spectrum as a Lorentzian curve. The overlap of the spectra was better when using the profile curve, but still were not exactly superimposed. The solution to improve the overlap of the theoretical with the experimental spectra is the use of a curve that has the convolution of two profiles analyzed: Lorentzian and Gaussian. This curve is called the Voigt profile, which will also be implemented by programmers and studied in a next work