Showing papers by "Technical University of Madrid published in 1970"

Inter-population variation in germination characteristics of "Plantago lanceolata" seeds: effects of temperature, osmotic stress and salinity

Abstract: Plantago lanceolata is a perennial herbaceous plant widely distributed throughout the Mediterranean region. Variation in germination requirements and tolerance to osmotic stress and salinity were tested using seeds from two wild populations. Germination experiments were conducted under controlled conditions at constant (15, 20 and 25oC) and alternating (20/10 and 25/15oC) temperatures, and under a 16 h/8 h light/dark photoperiod. Seeds of both populations were non-dormant and incubation temperature significantly affected the final germination percentage and germination rate. Germination percentages ranged from 27 to 85% for the different temperatures and populations. Significant inter-population variation was found for the germination percentages reached at alternate temperature regimes. To determine the effect of osmotic stress and salinity, four polyethylene glycol (PEG 6000: 10, 20, 30 and 40% w/v) and four NaCl concentrations (50, 100, 200 and 300 mmol·L-1) were tested. Seed germination significantly decreased with increasing in PEG and NaCl concentration. Seed germination recovery when they were transferred to distilled water after PEG or salinity treatments was variable depending on population, suggesting that P. lanceolata seeds are moderately tolerant to osmotic and salt stresses at germination stage.

Cultivando relaciones sociales. Lo común y lo “comunitario” a través de la experiencia de dos huertos urbanos de Madrid

Abstract: Esta investigacion etnografica se centra en los huertos urbanos comunitarios con el objetivo de examinar en que consiste su dimension comunitaria y analizar de que maneras se expresa. Para ello, el articulo aborda estas cuestiones desde un punto de vista socioespacial explorando las formas de produccion de comunidad a traves de la organizacion, relaciones, practicas y discursos de los participantes. Se aborda la relacion y apropiacion del espacio urbano, produciendo lugar como un modo de construir comunidad. La comunidad resultante presenta algunos rasgos particulares, como la revalorizacion de la categoria de proximidad al tiempo que se desarrollan los lazos translocales, o la diversificacion de formas de participacion, que incluye formatos tanto presenciales como virtuales. El texto es un doble caso de estudio y comparacion en dos huertos urbanos comunitarios de Madrid.

Una perspectiva sobre el binomio enseñanza–investigación en la universidad del s. XXI

Abstract: The university as an institution today has to fight the loss of its privileged position where knowledge is produced. The new concept of a university that emerges from this conflict creates important challenges for the mission of the university and the traditional principal functions of teaching-investigation. By looking at the forces that envelope the equilibrium of these two functions, the study reaffirms their link as the basis for the University of the Twenty-first Century. This premise implies defending the synergy between teaching and research in academia against the changes experienced by society and the global economy, which may destroy the essence of the university’s mission in favour of a single and exclusive ‘utilitarian’ purpose.

Expansion of "Himantoglossum robertianum" (Orchidaceae) in Madrid: a case study on environmental variables and geographical distribution

Abstract: The increase of the localities of Himantoglossum robertianum in the Community of Madrid region in the last years is studied. We have visited the new discovered populations and characterized their habitats, finding little agreement with the basophilic preferences attributed to the orchid. A model of potential distribution of the taxon has been elaborated showing the southern river basins of the region as the areas of greatest suitability. The lack of data prevents from concluding that the increase of the registered area corresponds with a climatic or land-use change in Madrid region, but the work developed has allowed to properly characterize the distribution and the state of conservation of the species.

Identification and assessment of the crop wild relatives of Spain that require most urgent conservation actions

Abstract: Crop Wild Relatives (CWR) are receiving significant attention over the last decades. Numerous conservation plans and guidelines to better manage these resources have been developed lately at both national and international levels. In this sense, Spain is following a similar path to that followed by other countries and has included CWR in the National Strategy for Plant Conservation of Spain and invested in scientific projects dealing with their conservation. In this work, we present a preliminary assessment of the conservation status (both in situ and ex situ ) of the Spanish CWR that are in a most urgent need of conservation. Crossability to crops, endemicity, threat status according to IUCN standards and high-quality georeferenced occurrence data were the criteria applied to select the target species, generating a list of 47 CWR species. Eleven of them, classified as Critically Endangered or Endangered by IUCN criteria are not, and should be, included included in the National Catalogue of Threatened Species of Spain; however 35 of them are included in at least one autonomous catalogue. Seventy-five per cent of the species are represented in protected areas, but if a minimum of five populations inside protected areas is sought the representation decreases to a 37%. The preliminary assessment of ex situ conservation shows that a high percentage of the species (81%) has at least one accession in national or international germplasm banks. However, additional studies are needed to determine if the accessions included in germplasm banks provide an adequate representation of the genetic variability of the species.

Enseñanza de programación orientada a objetos mediante el desarrollo de aplicaciones gráficas interactivas

Abstract: En la asignatura de Informatica Industrial de la EUITI-UPM se ha optado por desarrollar un metodo docente basado en el diseno y desarrollo de una aplicacion grafica interactiva como son los videojuegos, los simuladores o herramientas de ingenieria. L

MPD: Microprocesador didáctico en VHLD

Abstract: Esta comunicacion describe el mPd (microProcesador didactico) desarrollado en VHDL asi como sus herramientas de ensamblado y depuracion. El mPd da soporte a una asignatura sobre microprocesadores, con una carga lectiva muy baja, que no permite abordar

Congresos TAEE: del proyector de transparencias a los objetos educativos y los metadatos

Abstract: El presente documento pretende dar a conocer los trabajos y resultados realizados sobre el tratamiento, manipulacion y reutilizacion de los contenidos de las ponencias publicadas en los congresos TAEE en el periodo 1994-2008. Para definir los contenidos

Lima: encierro y evasión en La ciudad y los perros de Mario Vargas Llosa

Abstract: A partir de la novela La ciudad y los perros de Mario Vargas Llosa se extraen aquellos elementos alegoricos y simbolicos, a fin de establecer una exegesis de la ciudad de Lima de mediados del siglo XX, cuya problematica urbanistica perdura hasta nuestros dias (2012).

Deformaciones en áreas volcánicas: una aproximación numérica para su predicción en el volcán Teide (Tenerife, Islas Canarias)

Abstract: El estudio de areas volcanicas activas depende tanto de la disponibilidad de observaciones fisicas de los cambios que se producen en el medio natural como de la interpretacion de estos cambios. Asi, hoy en dia, el desarrollo y aplicacion de tecnicas geodesicas espaciales, como el GPS (Global Positioning System) o el InSAR (Interferometry with Synthetic Aperture Radar), proporciona una vision sin precedentes de las deformaciones en zonas volcanicas. Estas deformaciones son el reflejo de distintos procesos de origen tectonico, magmatico e hidrotermal, de dificil observacion y registro, que se producen en el interior del medio. En este sentido, el desarrollo de modelos para la prediccion de deformaciones permite establecer un enlace directo entre los procesos observados en superficie y los que se producen en profundidad, lo que podria resultar crucial para la evaluacion de riesgos volcanicos. En este trabajo, nos planteamos el desarrollo de un modelo fisico para estudiar las deformaciones elasticas consecuencia de una variacion de presion en el medio. Este modelo lo hemos implementado numericamente mediante el Metodo de Elementos Finitos (FEM). La utilizacion del FEM permite considerar distintas caracteristicas estructurales y morfologicas del medio asi como sus heterogeneidades mecanicas. La simulacion de deformaciones en Tenerife (Islas Canarias), considerando diferentes hipotesis sobre el medio, nos permite concluir que las predicciones de un modelo pueden describir de forma muy precisa cualquier conjunto de datos observacionales. Sin embargo, la exactitud de estas predicciones va a depender de las hipotesis realizadas sobre el medio.

Sensitivity Of Traffic Emissions Over The Iberian Peninsula By Using MM5-CMAQ Air Quality Modelling System

Abstract: The continuous increase on the vehicle fleet in Europe is contributing in a very significant portion to total emission budget particularly over cities with high population density. The ozone concentrations are particularly sensitivity to NOX and VOC's emissions produced by vehicle traffic. The importance of long range transport on urban ozone concentrations is a task subject to heavy research in the last years since urban emission reduction strategies seem to impact on ozone concentration reductions lower than expected. The impact of long range transport is becoming more and more important to explain the resistance to ozone concentrations to be reduced by taking into account only local vehicle traffic emission reductions strategies. In this contribution we have used the MM5 (PSU/NCAR) meteorological model and CMAQ (EPA, U.S.) air quality modelling system to simulate the impact of NOx emissions due to vehicle traffic (road traffic) on ozone concentrations over the Iberian Peninsula nesting over Madrid domain. The mother domain covers a 8100 km × 6480 km centered over the Iberian Peninsula but taking most of North of Africa and up to the North part of Norway. Three nesting levels are used up to Madrid Community level. High sensitivity of emission at Iberian Peninsula level (nesting level 1) are found.