Search results for "Canarias"
showing 10 items of 15 documents
Aproximación al turismo de salud en Canarias. Pasado y presente
2015
OBSERVATIONS OF THE LENSED QUASAR Q2237+0305 WITH CANARICAM AT GTC
2016
We present new mid-IR observations of the quadruply lensed quasar Q2237+0305 taken with CanariCam on the Gran Telescopio Canarias. Mid-IR emission by hot dust, unlike the optical and near-IR emission from the accretion disk, is unaffected by the interstellar medium (extinction/scattering) or stellar microlensing. We compare these "true" ratios to the (stellar) microlensed flux ratios observed in the optical/near-IR to constrain the structure of the quasar accretion disk. We find a half-light radius of $R_{1/2}=3.4_{-2.1}^{+5.3}\sqrt{\langle M \rangle/0.3\,\rm{M_{\odot}}}$ light-days at $\lambda_{rest}=1736$ {\AA}, and an exponent for the temperature profile $R \propto \lambda^{p}$ of $p=0.7…
A conceptual framework for the integral management of marine protected areas
2009
A general conceptual framework for the management of marine protected areas (MPAs) was developed. The driver-pressure-state-impacts-response (DPSIR) framework was used to determine the elements affecting MPAs. The developed evaluation framework helped to select an appropriate suite of indicators to support an ecosystem approach, an assessment of the MPAs functioning and policy decisions. Gaps derived from the management and policy responses in the MPAs were also outlined. It was concluded that the DPSIR framework can help to simplify the complexity of MPA management. This document is a tool for policy makers, scientists and general public on the relevance of indicators to monitor changes an…
La evaluación de los materiales didácticos digitales
2017
Este artículo presenta los resultados más relevantes obtenidos a partir de un estudio centrado en analizar las características pedagógicas y tecnológicas de una muestra de materiales de repositorios y plataformas de contenidos educativos digitales actualmente existentes en España destinados a la Educación Primaria tanto de plataformas de contenidos educativos comerciales como de repositorios institucionales públicos. El artículo presenta inicialmente algunas refexiones sobre algunos de los principales aspectos que, en nuestra opinión, deben caracterizar la evaluación de los materiales didácticos en el contexto de la sociedad digital. La metodología empleada en el estudio consistió en el aná…
Listado taxonómico comentado de los Capitélidos (Annelida, Polychaeta) de la península Iberica, islas Chafarinas, Baleares y Canarias
2013
[EN] The present annotated checklist has been elaborated after revision of preserved materials (from the Museo Nacional de Ciencias Naturales, Madrid and the reference collection of the Marine Biology Laboratory of the University of Valencia) and published literature related to capitellids from the Iberian Peninsula, Chafarinas, Balearic and Canary Islands. Twenty-four species and subspecies belonging to thirteen genera are recognized as valid taxa. With this checklist we include some taxonomic details and information on distribution at both global and regional levels. This work includes the setal formula and diagrammatic representation of capitellid taxa treated in this study.
Hydrothermal processes with REE enrichment in Fuerteventura carbonatites: evidences in accessory minerals
2021
Los diques carbonatíticos que afloran en la parte centro-occidental del Complejo Basal de Fuerteventura (Ajuy, Punta de la Nao), fueron afectados por el evento intrusivo mioceno responsable del metamorfismo de contacto y fusión parcial de parte del complejo alcalino-carbonatítico. Las características texturales, los procesos de formación de monacita enriquecida en LREE (La, Ce, Nd) en microfracturas que afectan a los cristales de zircón, evidencian interacciones de las carbonatitas con fluidos hidrotermales y removilización parcial de REE. El pirocloro es el principal mineral reservorio de tierras raras (suma REE=216694 ppm), con valores elevados de LREE (LaN=185816 y CeN=165209) respecto a…
Estudio de las orquídeas silvestres del sistema ibérico
2017
La presente memoria recopila los estudios realizados durante casi veinte años sobre la Familia Orchidaceae centrados en el sistema ibérico si bien también incluye consideraciones acerca de otras especies que habitan en el resto de territorios ibéricos y de las islas Baleares y Canarias. El sistema ibérico es una cadena montañosa heterogénea que se extiende unos 400 km en la mitad oriental peninsular en sentido noroeste-sureste. En un sistema montañoso tan amplio pueden encontrarse ambientes muy variados desde el punto de vista geológico, altitudinal, latitudinal, climático y por supuesto de la flora y la vegetación. Los pisos bioclimáticos dominantes son el mesomediterráneo y sobre todo el …
The difficulties of adapting university teaching for students with disabilities : an analysis focussed on inclusive guidance
2012
The need for specific attention for the personal, social, academic and professional development of students with disabilities is a challenge that the university is committed to. Although significant progress has been made, promoted by an inclusive educational approach, there are still many difficulties faced by students to intergrate into university education. To advance a deeper understanding of the issues affecting these students, research has been conducted with a sample of 113 students with disabilities from different centers in the University of La Laguna (Spain). The results have highlighted, the lack of guidance and information regarding access to university courses, the need to impl…
The puzzling case of the accreting millisecond X-ray pulsar IGR J00291+5934: flaring optical emission during quiescence
2017
We present an optical (gri) study during quiescence of the accreting millisecond X-ray pulsar IGR J00291+5934 performed with the 10.4m Gran Telescopio Canarias (GTC) in August 2014. Despite the source being in quiescence at the time of our observations, it showed a strong optical flaring activity, more pronounced at higher frequencies (i.e. the g band). Once the flares were subtracted, we tentatively recovered a sinusoidal modulation at the system orbital period in all bands, even if a significant phase shift with respect to an irradiated star, typical of accreting millisecond X-ray pulsars is detected. We conclude that the observed flaring could be a manifestation of the presence of an acc…
OCTOCAM: A fast multichannel imager and spectrograph for the 10.4m GTC
2010
OCTOCAM is a multi-channel imager and spectrograph that has been proposed for the 10.4m GTC telescope. It will use dichroics to split the incoming light to produce simultaneous observations in 8 different bands, ranging from the ultraviolet to the near-infrared. The imaging mode will have a field of view of 2' x 2' in u, g, r, i, z, J, H and Ks bands, whereas the long-slit spectroscopic mode will cover the complete range from 4,000 to 23,000 {\AA} with a resolution of 700 - 1,700 (depending on the arm and slit width). An additional mode, using an image slicer, will deliver a spectral resolution of over 3,000. As a further feature, it will use state of the art detectors to reach high readout…