Search results for "Icon"
showing 10 items of 3539 documents
La imagen y el líder, la aportación cinematográfica al carisma de Franco y José Antonio
2009
La economía carismática española fue singular; no por la impotencia de un aparato de propaganda ni por la (quizá obvia) inconsistencia de los líderes que absorbieron la empresa; lo fue sobre todo por la estructura en la que se insertaba la dualidad de sus protagonistas: Franco y José Antonio. Las dos tentativas de elevarlos al altar de la nación están horadadas por una barrena y el intento tiene la virtud de exhibir las fisuras. Quizá se deba al protagonista, acaso a la estructura misma del poder, tal vez al programa (o a su ambigüedad); no es impensable que obedezca a la irrelevancia (impertinencia, más bien) de los movimientos de masas para un periodo de guerra en fase terminal y, con may…
A história e a providência: cinema e carisma na representação de Franco e José Antonio Primo de Rivera
2012
Anos se passaram e os cerimoniais congelaram sua face repetitiva, codificada, tediosa. A José Antonio lhe corresponden tão somente a aflição ritual do 20 de novembro, solitária data em que a dor, ou sua coreografia, se rememorava. Em 1959, o cenário, porém, ganhou algo a mais: mudou do El Escorial para o Valle de los Caídos. Mais tarde, teve lugar a última farsa, o último furto. Era 20 de novembro de 1975. E o sepultado corpo de Franco extraiu de si a energía suficiente para arrebatar de José Antonio o único ritual que lhe restava desde 1938. A partir de entao, o 20 de novembro seria recordado pela morte do ditador. Recordado ou talvez prontamente sepultado pelo esquecimento.
Adeus a Georges Moustaki
2013
Lembro-me de momentos felizes, no nosso apartamento do Rio, na Equitativa, em Santa Teresa: os raios do sol que, das janelas, batiam nas paredes brancas, numa atmosfera ao mesmo tempo fresca e quente; eu desenhando em papéis, paredes, capas de LPs, quadro negro, cada traço representando para mim uma primeira idéia de luto, pois sabia que estes desenhos desapareceriam logo e para sempre.
Internal photoemission in solar blind AlGaN Schottky barrier photodiodes
2005
We have analyzed the photoresponse of solar blind AlGaN Schottky barrier photodiodes below the alloy band gap energy, in the 3.5-4.5 eV range, and we show that it is dominated by internal photoemission. The n-type Schottky barrier height is shown to increase linearly with the band gap energy of the AlGaN alloy. The amplitude of the internal photoemission signal is about 20 times smaller than the value given by the Fowler theory based on a free electron model. We explain this result by taking into account the interband transitions and the ballistic transport of photoexcited electrons in the metal. This low value of internal photoemission allows us to achieve a spectral rejection ratio betwee…
How does graphene enhance the photoelectric conversion efficiency of dye sensitized solar cells? An insight from a theoretical perspective
2019
The main goal of this work is to clearly answer the question from a theoretical perspective: how does graphene enhance the photoelectric conversion efficiency in the semiconducting layer of a dye sensitized solar cell? Several arrangements of the graphene layer between the dye molecule and the TiO2 (101) surface are carefully studied and discussed. The dynamic interfacial electron propagations are simulated with consideration of the underlying nuclear motion effect. Theoretical investigation shows that graphene can speed up the electron injection from the dye molecules to the semiconductor layer, only when the graphene sheet is bonded to the TiO2 surface via C–Ti bonds. The excited electron…
Malum arbor. El código semiológico de la manzana
1991
A TRAVES DEL ESTUDIO SIMBOLICO DEL MANZANO SE ABORDA LA MAS IMPORTANTE CARACTERISTICA DEL CODIGO SEMIOLOGICO DE ESTA FRUTA Y DEL ARBOL QUE LO OFRECE. MEDIANTE LA ASOCIACION DE LA MANZANA CON EL PECADO ORIGINAL, EL MANZANO HA SIDO IDENTIFICADO COMO UN ARBOL DE SALVACION Y LA MANZANA COMO FRUTO DEL AMOR. IDEAS CODIFICADAS COMO RESULTADO DE LA CULTURA OCCIDENTAL. EL PRESENTE ESTUDIO PLANTEA LAS CUESTIONES DEL CODIGO EN UN SENTIDO DIACRONICO, TENIENDO EN CUENTA LAS TRADICIONES LITERARIAS Y GRFICAS, Y CULMINANDO CON EJEMPLOS QUE TRASMITE LA EMBLEMATICA DE LOS SIGLOS XVI Y XVII. (A.B.C./ L.A.G.)
Efficient microwave-assisted synthesis of PCBM methanofullerenes (C60 and C70)
2015
PCBM is a fullerene derivative (phenyl-C61-butyric acid methyl ester) considered to be one of the best n-type organic semiconductors and plays a relevant role in organic photovoltaic solar cells. Much effort has been devoted to the optimization of the synthesis of PCBM derivatives. In this paper, PC61BM and PC71BM fullerene mono-adducts but also PCBM-like derivatives are successfully prepared by a one- step cyclopropanation reaction under microwave irradiation. The products are collected in good yields in short time, during which isomerization of the open [5,6] to the closed [6,6] form takes place in situ. In addition, with the use of two cycles of irradiation, a series of mixtures of bis-a…
Theoretical prediction of the electronic properties of silicon fullerenes
1994
Summary form only given. High symmetry silicon clusters present currently intense interest because of the possibility they present properties similar to those displayed by fullerenes. Thermodynamic studies have shown that the buckminsterfullerene structure of Si6o is much more stable than other suggested structures. We present here a detailed investigation of the structure and electronic properties of silicon cluster analogous to fullerenes. We have made use of AMI method to obtain reliable geometrical parameters. The calculated valence effective Hamiltonian (VEH) electronic structures are used to predict ionization potentials, electron affinities, HOMO-LUMO energy gaps and first allowed tr…
The iconic interface for the PIctorial C language
2003
Iconic environments intend to provide expressive tools to implement, to debug and to execute programs. Moreover its pictorial constructs guide the user to design algorithms in an interactive fashion. Visual interfaces are especially required whenever programs run on an heterogeneous and reconfigurable multiprocessor system oriented to image analysis. Pictorial tools help the user to control the scope of variables, and the distribution of the tasks into the processors. In this paper, the general design, the visual-syntax, and the implementation of the first prototype of an iconic user interface for the PIctorial C Language (PICL) are described. >
Rapid PCR-based test for identifying Candida albicans by using primers derived from the pH-regulated KER1 gene.
2006
A PCR-based method in combination with a simple, reliable and inexpensive DNA extraction procedure for rapid detection of Candida albicans clinical isolates is described here. The extraction protocol is based on a combination of chemical (NaOH and detergents) and physical (boiling) treatments, thus avoiding many of the problems inherent in the currently available DNA extraction protocols (basically the use of expensive and/or toxic chemical reagents), and may be useful for daily clinical routine. The PCR-based system described here uses a single pair of primers (SC1F and SC1R) deduced from the C. albicans-specific KER1 gene sequence. These primers amplify a 670-bp fragment of the KER1 gene.…