Design and evaluation of an optical switching node

[EN]For a good development of elastic optical networks, the design of flexible optical switching nodes is required. This work analyses the previously proposed flexible architectures and, based on the most appropriate, which is the Architecture on Demand (AoD), proposes a specific configuration of the node that includes spatial and spectral switching and the wavelength conversion functionality with a low blocking probability and the minimum amount of modules; the characteristics of the traffic that the designed node is able to cope with are specified in the last chapter. An evaluation of the designed node is also done, and, compared to the other architectures, it is shown that the Architecture on Demand gives better results than others and that it has a higher potential for future developments.

Mesoscale, cyclonic eddies as larval fish habitat along the southeast United States shelf: A Lagrangian description of the zooplankton community

The Charleston Gyre region is characterized by continuous series of cyclonic eddies that propagate northeastwards before decaying or coalescing with the Gulf Stream south of Cape Hatteras, NC, USA. Over 5 d, chlorophyll-a concentration, zooplankton displacement volume, and zooplankton composition and abundance changed as the eddy moved to the northeast. Surface chlorophyll-a concentration decreased, and zooplankton displacement remained unchanged as the eddy propagated. Zooplankton taxa known to be important dietary constituents of larval fish increased in concentration as the eddy propagated. The concurrent decrease in chlorophyll-a concentration and static zooplankton displacement volume can be explained by initial stimulation of chlorophyll-a concentration by upwelling and nutrient enrichment near the eddy core and to possible grazing as zooplankton with short generation times and large clutch sizes increased in concentration. The zooplankton community did not change significantly within the 5 d that the eddy was tracked, and there was no indication of succession. Mesoscale eddies of the region are dynamic habitats as eddies propagate northeastwards at varying speeds within monthly periods. The abundance of zooplankton important to the diets of larval fish indicates that the region can provide important pelagic nursery habitat for larval fish off the southeast coast of the United States. A month of feeding and growth is more than half the larval duration of most fish spawned over the continental shelf of the southeastern United States in winter.

Obras de don Manuel Payno

UANL

Evaluación del proyecto de 'Mejora de la calidad educativa mediante la incorporación del Enfoque de Género' en escuelas de República Dominicana : resultados de su impacto.

Se describe el contenido del proyecto 'Mejora de la calidad educativa mediante la incorporación del Enfoque de Género' realizado en las provincias de Independencia y Elías Piña de República Dominicana, que consiste en la puesta en práctica de una propuesta pedagógica que recoge actividades formativas y organizativas dirigidas a profesorado, alumnado y familias de las escuelas seleccionadas para cada zona. Se expone el diseño y el proceso de evaluación del proyecto y se presentan los resultados del impacto del proyecto en los tres colectivos seis meses después de su finalización.

Validação de instrumentos para avaliação do conhecimento e da habilidade acerca da punção venosa periférica com cateter agulhado

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Phototrophic growth of Rubrivivax gelatinosus in poultry slaughterhouse wastewater

Rubrivivax gelatinosus was grown in Pfennig's synthetic medium (PM) and in treated wastewater from poultry slaughterhouse (TW) to assess growth profiles for biomass production. Cultures inoculated at 1% (v/v) were grown under anaerobiosis at 30 +/- 2 degrees C and 1400 200 lux for 12 days. Regular absorbance curves for R. gelatinosus were found both on PM and TW. on PM, the highest dry weight of biomass, 0.39 g L-1. was achieved in the 216-h culture and the highest specific growth rate of 0.2960 h(-1) occurred in the 24-h culture. on TW, the highest biomass of 0.57 g L-1 was also obtained in the 216-h culture and the highest specific growth rate, 0.1970 h(-1), was achieved in the 48-h culture. For productivity and chemical oxygen demand investigations, the cultivation was accomplished in the TW under anaerobiosis at 32 +/- 2 degrees C and 4000 +/- 500 lux, for 10 days. Productivity was 0.085 g biomass (d.w.) L-1 day(-1), with a COD decrease of 91%. (c) 2007 Elsevier Ltd. All rights reserved.

Los foros intergubernamentales de la Comisión Económica para América Latina y el Caribe = Intergovernmental forums of the Economic Commission for Latin America and the Caribbean

Teniendo presente la posibilidad de que durante el vigésimo tercer período de sesiones de la CEPAL se considere el ingreso de nuevos miembros, se proporciona información y antecedentes sobre la creación y composición de la CEPAL, composición de las otras comisiones regionales de las Naciones Unidas, y lista de Estados miembros de la CEPAL.

Memoria general del proyecto : ordenación y mejora del arboreto de la Escuela

Los fines del arboreto de la Escuela son,a mi entender, el tener una muestra práctica de la flora española y exótica que pueda resistir el clima de Madrid y al mismo tiempo sirva de ornato de la zona en qoe está enclavado