994 resultados para Moliere, 1622-1673


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Discorre sobre o significado da construção de Brasília e sua irreversibilidade. Apresenta dados sobre os custos desta, que desmentem as notícias sobre o fato. Enumera as medidas que necessitam serem tomadas para a consolidação da capital federal e solicita aos deputados a dar tramitação aos projetos pendentes para este fim.

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Spanish: Este trabajo tiene como objetivo la recopilación de dibujos y diferentes figuras de las especies presentes en nuestro territorio. Para ello, hemos utilizado como principales fuentes de información la obra de Ringuelet et al. (1967), Reis et al. (2003), López et al. (2003; 2006) y las bases de datos on-line de W. N. Eschmeyer y Fish Base. El tratamiento incluye una ficha individual con imágenes seleccionadas de la especie tratada y las que eventualmente hayan surgido por trabajos de índole anatómica. Se adjuntan las referencias de los trabajos utilizados en la confección de cada ficha. Esta es una publicación abierta, por lo que requerirá de actualización permanente, para lo cual sería necesario se sume a nuestra tarea la buena voluntad y colaboración de la comunidad ictiológica. Los compiladores entendemos que esta contribución, además de aportar valiosa información, rescata el trabajo de mujeres y hombres que son parte de la rica historia de la ictiología nacional y regional. English: The goal of this work is to present a collection of drawings and figures depicting the species present in our country. To achieve this, our main sources of information have been the works of Ringuelet et al. (1967), Reis et al. (2003), and López et al. (2003; 2006), as well as the online databases of W. N. Eschmeyer and Fish Base. Each species has an individual factsheet with selected images, including some from anatomical research works. All the works referenced are mentioned in each factsheet. This is an open-ended publication. As such, it will require permanent updating, which will depend on the good will and collaboration of the ichthyological community. As compilers, we understand that this contribution not only provides valuable information, but also highlights the work of men and women who are part of the rich history of our national and regional ichthyology. (Texto en espanol y PDF tiene cuatorce paginas.)

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Notas tipográficas retiradas de Brunet, v. 2, col. 1780.

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"Click" chemistry has become an efficient avenue to unimolecular polymeric nanoparticles through the self-crosslinking of individual polymer chains containing appropriate functional groups. Herein we report the synthesis of ultra-small (7 nm in size) polymethyl methacrylate (PMMA) nanoparticles (NPs) by the "metal-free" cross-linking of PMMA-precursor chains prepared by reversible addition-fragmentation chain transfer (RAFT) polymerization containing beta-ketoester functional groups. Intramolecular collapse was performed by the one-pot reaction of beta-ketoester moieties with alkyl diamines in tetrahydrofurane at r.t. (i.e., by enamine formation). The collapsing process was followed by size exclusion chromatography and by nuclear magnetic resonance spectroscopy. The size of the resulting PMMA-NPs was determined by dynamic light scattering. Enamine "click" chemistry increases the synthetic toolbox for the efficient synthesis of metal-free, ultra-small polymeric NPs.

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Presentado en las Jornadas sobre "El humor (y los humores) en el mundo antiguo", organizado por el Departamento de Estudios Clásicos y el Instituto de Ciencias de la Antigüedad de la UPV y celebrado en Vitoria-Gasteiz los días 16 y 17 de octubre de 2007.

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The Naaf River estuary is one of the large estuaries in the Bangladesh coastal region not to have been affected by extensive human disturbance. This research provides information about the fisheries diversity status by Estuarine Set Bag Net (ESBN) sampling relation to physicochemical variables in both spatio-temporal scales. About 25 km of the lower estuary was divided into six zones for sample collection by considering the accessibility and availability of the ESBN operation, fish landing centers and location of the fishing villages. In total 48 samples have been analyzed which were taken throughout March to October 2006. To quantify the species diversity, all fisheries data were analyzed by using EstimateS and EcoSim software which accounts the different diversity indices viz., species richness, Shannon–Wiener diversity Index, Dominance and Evenness index. The research results demonstrate that the Naaf River estuary is a habitat of 161 (species richness, Sobs=161, Choa 1=162±2.34, ACE=161.73) different species which belong to 98 fin fishes, 23 shrimps and prawns,13 crabs, 11 molluscs, 3 echinoderms, 4 other crustaceans;while 9 remain unidentified. Results on the aquatic environment,mainly salinity and turbidity were found to have a major influence on their occurrence and distribution. All the findings indicated that the Naaf River estuary is a highly productive system and provides a favourable environment for large variety of estuarine species assemblages.

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We propose a sinusoidal phase-modulating laser diode interferometer for measuring small angular displacement. The interferometer is based on a Fabry-Perot plate. It has a simple structure and is insensitive to external disturbance. Sinusoidal phase-modulating interferometry is used for improving the measurement accuracy. A charge-coupled device (CCD) image sensor is used for measuring the distance between the reflected beams from two faces of the Fabry-Perot plate. From the distance, the initial angle of incidence is calculated. Compared with Michelson interferometers and autocollimators, this interferometer has the advantage of compact size and simple structure. The numerical calculation and experimental results verify the usefulness of this novel interferometer. (C) 2004 Society of Photo-Optical Instrumentation Engineers.

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Experimental measurements of rate of energy loss were made for protons of energy .5 to 1.6 MeV channeling through 1 μm thick silicon targets along the <110>, <111>, and <211> axial directions, and the {100}, {110}, {111}, and {211} planar directions. A .05% resolution automatically controlled magnetic spectrometer was used. The data are presented graphically along with an extensive summary of data in the literature. The data taken cover a wider range of channels than has previously been examined, and are in agreement with the data of F. Eisen, et al., Radd. Eff. 13, 93 (1972).

The theory in the literature for channeling energy loss due to interaction with local electrons, core electrons, and distant valence electrons of the crystal atoms is summarized. Straggling is analyzed, and a computer program which calculates energy loss and straggling using this theory and the Moliere approximation to the Thomas Fermi potential, VTF, and the detailed silicon crystal structure is described. Values for the local electron density Zloc in each of the channels listed above are extracted from the data by graphical matching of the experimental and computer results.

Zeroth and second order contributions to Zloc as a function of distance from the center of the channel were computed from ∇2VTF = 4πρ for various channels in silicon. For data taken in this work and data of F. Eisen, et al., Rad. Eff. 13, 93 (1972), the calculated zeroth order contribution to Zloc lies between the experimentally extracted Zloc values obtained by using the peak and the leading edge of the transmission spectra, suggesting that the observed straggling is due both to statistical fluctuations and to path variation.

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En fecha tan temprana como 1622 aparece en Inglaterra la primera publicación periódica. Ese mismo año Ben Jonson, escritor teatral contemporáneo de William Shakespeare, compone una mascarada, la primera obra literaria que alude al fenómeno del periodismo. Cuatro años después, en 1626, escribe y hace representar toda una comedia cuyo tema central y escenario es un periódico. Por primera vez en español damos ahora en traducción ambas obras, Noticias del Nuevo Mundo descubierto en la Luna (News from the New World discover’d in the Moon) y El comercio de noticias (The staple of news). Especialmente esta última es, además de una apreciable pieza dramática, un excelente retrato de un fenómeno emergente que no solamente describe las características del incipiente periodismo, sino además una reflexión sobre cuestiones tales como la democracia, la participación ciudadana, la monarquía, la estructura empresarial o los derechos de autor. La obra de Jonson es el retrato de una época oscura, apenas dos décadas de albores del periodismo, y su literatura es la única capaz de devolvernos algo de su efímero esplendor. Pero es también el retrato de una profesión cuyas principales características, que el escalpelo crítico de Jonson tan ácidamente pone de manifiesto, siguen siendo contemporáneas. Con sus casi cuatro siglos de solera, en la oficina de noticias que Jonson nos pinta está teniendo lugar una escena que no ha perdido su vigencia.

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实现了一种新型的激光脉冲整形系统,该系统使用了一个由孔径耦合带状线(ACSL)电脉冲整形器驱动的电光调制器。一个电脉冲整形器由两条通过其公共接地板上的耦合孔径发生耦合作用的带状传输线所组成的四端口装置。更换具有不同耦合孔径的公共接地板,该电脉冲整形发生器可以具有150ps时间结构的任意整形电脉冲。将任意整形的电脉冲输入到电光调制器上,就可以得到任意整形的激光脉冲。利用该系统,激光脉冲整形系统能够产生具有150ps前后沿,1~3ns脉冲宽度可调、高对比度、光滑过渡以及任意整形的激光脉冲。

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The LB films and spin-coated films of tetra-neopentoxy phthalocyanine zinc (TNPPcZn) were prepared and annealed at different temperatures. Their refractive index (n) and extinction coefficient (k) were measured by p-polarized reflectance. The similar value of n and k, as well as similar changing tendency of it and k at varied annealing temperatures, was found between LB films and spin-coated films. In addition, the absorption curves of TNPPcZn LB films and spin-coated films in visible range at different annealing temperature were investigated. The results indicate that the changing tendency of the extinction coefficient of two kinds of TNPPcZn films obtained from two methods mentioned above were coincident. When the annealing temperature increased to 150 degrees C, the monomers of TNPPcZn films transformed to aggregates, n(f) and k(f) of the films increased. Further, n(f) and k(f) decreased as aggregates changed back to monomers again at the annealing temperature of 300 degrees C. The experimental results coincide well with the theoretical analysis. (C) 2004 Elsevier B.V. All rights reserved.