Álbum do Amazonas / photographias de F. A. Fidanza. --Album do Amazonas, 1901-1902 : no Governo de Sua Exª. Snr. Dr. Silvério Nery

Com dedicatória à Camara dos Deputados do Senador Joaquim José Pais da Silva Sarmento, 1900-1902(na página de rosto)

Collecção das Leis do Brazil de 1821

Parte 1 - Leis das Cortes Gerais Extraordinárias e Constituintes da Nação Portuguesa

Carta enviada por el Dr. Robert Worms a Justo Garate

1 carta (manuscrita) ; 202x145mm.

Collecção das Leis da Republica dos Estados Unidos do Brazil de 1902

Parte 1 - Atos do Poder Legislativo

Carta que ao Illustre Deputado em Cortes o Senhor Luiz Nicolao Fagundes Varella, escreveo hum zellozo patriota em 14 de dezembro de 1821, dada á luz por José Alves Ribeiro de Mendonça

Diccionario Bibliographico Portuguez / Innocencio Francisco da Silva, 1860. v. 4, p. 219.

Nueva documentación sobre el primer nacionalismo vasco: correspondencia inédita de Sabino Arana con Luis de Eleizalde (1900-1902)

[ES] En el Archivo General de la Universidad de Navarra, dentro del Fondo Luis de Eleizalde, se conservan un telegrama y ocho cartas de Sabino Arana Goiri al propio Eleizalde, fechadas entre el 3 de diciembre de 1900 y el 21 de agosto de 1902. Se trata de una documentación inédita, de gran interés para conocer diversos aspectos de la ideología y la acción política y cultural del fundador del nacionalismo vasco en los últimos años de su vida. Las cartas aportan nuevos datos sobre las difíciles relaciones de Arana con los fueristas del semanario Euskalduna, su participación en el Congreso de Hendaya para la unificación ortográfica del euskera, las publicaciones periódicas creadas por él (en especial la revista cultural Euzkadi), su controvertida evolución españolista de 1902, etc.

Malcolm X y Steve Biko: la difícil recuperación de una identidad

Antonio Duplá Ansuategui, Piedad Frías Nogales e Iban Zaldúa (editores)

Synopse dos trabalhos da Camara dos Srs. Deputados : relativos ao anno de 1902 : acompanhados de differentes documentos : organisados na Secretaria da mesma Camara

Sinopse dos trabalhos da Câmara dos Deputados, em 1902.

Enhancing Kerr nonlinearity in an asymmetric double quantum well via Fano interference

We investigate the enhancement of Kerr nonlinearity in an asymmetric GaAs double quantum well via Fano interference, which is caused by tunneling from the excited subband to the continuum. In our structure, owing to Fano interference, the Kerr nonlinearity can be enhanced by appropriately choosing the values of the detunings and the intensity of the pump field, while cancel the linear and nonlinear absorptions.

Enhancing Kerr nonlinearity via spontaneously generated coherence

A theoretical investigation is carried out into the effect of spontaneously generated coherence on the Kerr nonlinearity of general three-level systems of Lambda, ladder, and V-shape types. It is found, with spontaneously generated coherence present, that the Kerr nonlinearity can be clearly enhanced. In the Lambda- and ladder-type systems, the maximal Kerr nonlinearity increases and at the same time enters the electromagnetically induced transparency window as the spontaneously generated coherence intensifies. As for the V-type system, the absorption property is significantly modified and therefore enhanced Kerr nonlinearity without absorption occurs for certain probe detunings. We attribute the enhancement of Kerr nonlinearity mainly to the presence of an extra atomic coherence induced by the spontaneously generated coherence.

Giant Kerr nonlinearity induced by interacting dark resonances

A scheme for giant enhancement of the Kerr nonlinearity in a four-level system with double dark resonances is proposed. Compared with that generated in a single-dark-resonance system, the Kerr nonlinearity can be enhanced by several orders of magnitude with vanishing linear absorption. We attribute this dramatic enhancement to the interaction of dark resonances. (c) 2005 Optical Society of America.

Controllable Kerr nonlinearity with perfect transparency in the existence of spontaneously generated coherence

We investigate the Kerr nonlinearity of a V-type three-level atomic system where the upper two states decay outside to another state and hence spontaneous generated coherence may exist. It is shown that dark state and hence perfect transparency present under certain conditions. Meanwhile, the Kerr nonlinearity can be controlled by manipulation of the decay rates and the splitting of the two excited states. Therefore, enhanced Kerr nonlinearity without absorption can be obtained under proper parameters.