The Cradle Song (December 8, 1944)

Program for The Cradle Song (December 8, 1944)

The Cradle Song (March 14-16, 1951)

Program for The Cradle Song (March 14-16, 1951). To view the photos from this production of The Cradle Song, please click here

Characterization of wind-blown sediment transport with height in a highly mobile dune (SW Spain)

The Valdevaqueros dune is located at one of the windiest points of Europe, where the frequent occurrence of strong easterly winds has generated a highly mobile dune. Several rotating cup anemometers in vertical array and a self-designed vertical sand trap, were placed to retain the drift sands at different heights over the surface in order to determine theoretical and actual sand transport rates in the Valdevaqueros dune system. General results show that 90% of the wind-blown sand is transported within the first 20cm above the dune crest surface. Theoretical transport rates based on different empirical formulae were 0.33 to 0.78 times the in-situ sand transport rate detected, which was 2.08·10-2kgm-1s-1 under moderate wind power (mean speed ranging from 8.4 to 17.9ms-1). Analysis of different statistical grain-size parameters helped to understand sand transport distribution at different heights

El león de Graus : Costa

A B.N.E. aproxima a data [1934

El ama de la casa : comedia en dos actos

"Número extraordinario"--Cover.Caption title.Mode of access: Internet.Spec. Coll. copy is part of a collection (Collection 1855). To page this item, use the collection record; to find the collection record, search the title: Literatura de kiosko. Item is in box 27. In cream, green and black wrappers, with photograph of author on cover

Use of genus cistus in phytotechnologies: application in a closed mercury mine

The Almadén mining district is known to be one of the richest mercury areas in the world. Despite the high concentrations of this metal, this territory has well-established vegetation that provides a wide range of mercury-tolerant plants that can be used as ecosystem services. This is the case of some species of Cistus that grow wild and spontaneously as part of the natural flora of Almadén. The objective of this study was to evaluate if there were differences between the absorption and distribution of Hg of five species of the genus Cistus in spontaneous growth and to evaluate their potential application in phytotechnologies. The work has been carried out with plant samples collected under field conditions in the “Fuente del Jardinillo” located in the old mining area of Almadén (Ciudad Real). The experimental plot was divided into three previously characterised subplots to ensure that all the sampled plants had grown in similar soil conditions (pH, organic matter content, EC, CEC, total Hg and available Hg). Additionally, the experiment was carried out in triplicate. The results showed that despite the homogeneity of the soil, the absorption of Hg in the aerial part of the plants showed significant differences related to Cistus species. The values in the bioaccumulation of mercury in the aerial part were also different. Based on the uptake of mercury by the plants sampled in this study, its potential use in phytotechnologies was established, classifying them as phytoextractors (Cistus albidus, C. ladanifer and C. monspeliensis) and phytostabilisers (C. crispus and C. salviifolius)This research received no external fundin

Evaluación de la sostenibilidad agraria. El caso de La Concordia (Nicaragua)

Esta nueva obra de ISF ApD y del grupo de Sistemas Agrarios de la Universidad Politécnica de Madrid es una guía metodológica con indicadores para establecer en qué grado se está alcanzando el objetivo de la sostenibilidad en el sector agropecuario. El desarrollo agropecuario siempre ha estado dentro de las carteras de los programas de desarrollo. Aun así, en 2009 nos encontramos con 963 millones de personas malnutridas, prácticamente todas en países en desarrollo y la gran mayoría en las zonas rurales. Paradójicamente, las mejoras tecnológicas introducidas en las zonas de producción de alimentos durante decenios, a la vez que han mejorado la productividad de grandes extensiones de tierra, han provocado no pocos impactos ambientales y sociales negativos. Cómo conocer o medir si con un programa estamos contribuyendo a alcanzar o no el objetivo de un sistema agrícola sostenible es una pregunta común en los agentes de desarrollo para la que no es fácil encontrar respuesta. Ingeniería Sin Fronteras-Asociación para el Desarrollo (ISF ApD) lleva más de 10 años trabajando en programas de desarrollo agropecuario en Nicaragua. En su plan estratégico para Nicaragua definido en 2005, ISF ApD entiende que una vía para la reducción de la pobreza en el medio rural es el desarrollo económico sostenible a través de actividades productivas que permitan a la población más desfavorecida la generación de ingresos. El grupo de Sistemas Agrarios (AgSystems), perteneciente a la Universidad Politécnica de Madrid (UPM), está formado por investigadores de los departamentos de Producción Vegetal: Fitotecnia y Biología Vegetal. Sus investigaciones se centran en el estudio de sistemas agrarios y su relación con el medio ambiente, con el objetivo final de diseñar estrategias que permitan mantener la sostenibilidad de los sistemas de cultivo. El presente texto pretende ser una guía metodológica para la evaluación de la sostenibilidad. En él se nos presenta y desarrolla una metodología para la evaluación, así como una serie de indicadores útiles para establecer en qué grado se está alcanzando el objetivo de la sostenibilidad

Santiago Rusiñol /[Gregorio Martínez Sierra]

Forma part del projecte: Biblioteca Digital d'Història de l'Art Hispànic (UAB)Localització de l'original: Universitat Autònoma de BarcelonaDirector de la col·lecció: Gregorio Martínez Sierr

Juan Pantoja de la Cruz

Forma part del projecte: Biblioteca Digital d'Història de l'Art Hispànic (UAB)Localització de l'original: Universitat Autònoma de BarcelonaDirector de la col·lecció: Gregorio Martínez Sierr

Effect of temperature and reaction time of the synthesis of nanocrystalline brucite

Mg(OH)2 nanoparticles has been successfully synthesized by means of the hydrothermal method. The effect of the reaction time and the synthesis temperature on the nanoparticles obtained has also been studied. The physic-chemical properties of the synthesized brucite samples have been characterized by X-Ray-diffraction (XRD), scanning electron microscopy/energy dispersive X-rays analysis (SEM/EDX), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), thermogravimetry/ differential scanning Calorimetry (TG-DSC) and in situ high-temperature X-ray diffraction (XRD). The influence of the synthesis parameters in the brucite samples has been discussed in detail. Furthermore, it has been shown that the increase of temperature from 180 to 200ºC improves the crystallinity degree of Mg(OH)2 nanostructured particles and also, promotes the formation of plates with bigger uniform size. As well, the increase in the time reaction induces the formation of bigger size brucite plates. So, this hydrothermal method has been shown to be a really promising method for the large scale production.Peer Reviewe