7 research outputs found

    Análisis de la pertinencia curricular 2010: recomendaciones para la oferta curricular vigente e implementación de nuevas carreras, primera parte

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    La pertinencia es uno de los factores claves de la Educación Superior en el siglo XXI. El término ―pertinencia‖ ha sido utilizado para referirse a la coincidencia entre lo que las instituciones de Educación Superior hacen y lo que la sociedad espera de ellas. Existe actualmente un debate internacional y nacional que revaloriza la pertinencia en el contexto de transición hacia sociedades del conocimiento. El concepto de pertinencia debe ser elaborado desde el punto de vista de lo que la sociedad espera de la Educación Superior; la mejor manifestación de la pertinencia de la Educación Superior es la variedad de servicios que presta a la sociedad. Una definición de pertinencia radica en el papel que cumple y el lugar que ocupa la Educación Superior en función de las necesidades y demandas de los diversos sectores sociales. Las instituciones de Educación Superior tendrán que reorientar su oferta académica en función de las necesidades del sector productivo y las necesidades del desarrollo. Además, deberán superar también una visión tradicionalista de las carreras, demasiado inflexible para las necesidades del mundo actual. Fortalecer la investigación científica y tecnológica para dar respuestas a los problemas que sufre la sociedad actual, problemas en el ámbito económico, en el área social y en el medio ambiente. Por otra parte, para todos es evidente la interdependencia que existe entre pertinencia y calidad, al punto que se puede decir que la una presupone a la otra como las dos caras de una misma moneda. Pertinencia y calidad deben marchar siempre de la mano

    Atlas de las praderas marinas de España

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    Knowledge of the distribution and extent of seagrass habitats is currently the basis of management and conservation policies of the coastal zones in most European countries. This basic information is being requested through European directives for the establishment of monitoring programmes and the implementation of specific actions to preserve the marine environment. In addition, this information is crucial for the quantification of the ecological importance usually attributed to seagrass habitats due to, for instance, their involvement in biogeochemical cycles, marine biodiversity and quality of coastal waters or global carbon budgets. The seagrass atlas of Spain represents a huge collective effort performed by 84 authors across 30 Spanish institutions largely involved in the scientific research, management and conservation of seagrass habitats during the last three decades. They have contributed to the availability of the most precise and realistic seagrass maps for each region of the Spanish coast which have been integrated in a GIS to obtain the distribution and area of each seagrass species. Most of this information has independently originated at a regional level by regional governments, universities and public research organisations, which explain the elevated heterogeneity in criteria, scales, methods and objectives of the available information. On this basis, seagrass habitats in Spain occupy a total surface of 1,541,63 km2, 89% of which is concentrated in the Mediterranean regions; the rest is present in sheltered estuarine areas of the Atlantic peninsular regions and in the open coastal waters of the Canary Islands, which represents 50% of the Atlantic meadows. Of this surface, 71.5% corresponds to Posidonia oceanica, 19.5% to Cymodocea nodosa, 3.1% to Zostera noltii (=Nanozostera noltii), 0.3% to Zostera marina and 1.2% to Halophila decipiens. Species distribution maps are presented (including Ruppia spp.), together with maps of the main impacts and pressures that has affected or threatened their conservation status, as well as the management tools established for their protection and conservation. Despite this considerable effort, and the fact that Spain has mapped wide shelf areas, the information available is still incomplete and with weak precision in many regions, which will require an investment of major effort in the near future to complete the whole picture and respond to demands of EU directives

    Alkaloids and acetogenins in Annonaceae development: biological considerations

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    Chemical studies of the plant family Annonaceae have intensified in the last several decades due to the discovery of annonaceous molecules with medicinal potential (e.g., benzylisoquinoline alkaloids and acetogenins). Approximately 500 alkaloids have been identified in 138 Annonaceae species in 43 genera. In addition, until 2004, 593 annonaceous acetogenins (ACGs) had been identified, from 51 species in 13 genera.This suggests that plants from this family allocate important resources to the biosynthesis of these compounds. Despite the diversity of these molecules, their biological roles, including their physiological and/or ecological functions, are not well understood. In this study, it was provided new data describing the variety and distribution of certain alkaloids and ACGs in annonaceous plants in distinct stages of development. The potential relationships among some of these compounds and the seasonally climatic changes occurring in the plant habitat are also discussed. These data will improve our understanding of the secondary metabolism of these pharmacologically important molecules and their expression patterns during development, which will help to determine the optimal growth conditions and harvest times for their production

    Aporphine alkaloid contents increase with moderate nitrogen supply in <i>Annona diversifolia</i> Saff. (Annonaceae) seedlings during diurnal periods

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    <p>Aporphine alkaloids are secondary metabolites that are obtained in low levels from species of the Annonaceae family. Nitrogen addition may increase the alkaloid content in plants. However, previous studies published did not consider that nitrogen could change the alkaloid content throughout the day. We conducted this short-term study to determine the effects of nitrogen applied throughout the diurnal period on the aporphine alkaloids via measurements conducted on the roots, stems and leaves of <i>Annona diversifolia</i> seedlings. The 60-day-old seedlings were cultured with the addition of three levels of nitrogen (0, 30 and 60 mM), and alkaloid extracts were analysed using high-performance liquid chromatography. The highest total alkaloid content was measured in the treatment with moderate nitrogen supply. Further, the levels of aporphine alkaloids changed significantly in the first few hours of the diurnal period. We conclude that aporphine alkaloid content increased with moderate nitrogen supply and exhibited diurnal variation.</p

    Análisis de la pertinencia curricular 2010: recomendaciones para la oferta curricular vigente e implementación de nuevas carreras, primera parte

    No full text
    La pertinencia es uno de los factores claves de la Educación Superior en el siglo XXI. El término ―pertinencia‖ ha sido utilizado para referirse a la coincidencia entre lo que las instituciones de Educación Superior hacen y lo que la sociedad espera de ellas. Existe actualmente un debate internacional y nacional que revaloriza la pertinencia en el contexto de transición hacia sociedades del conocimiento. El concepto de pertinencia debe ser elaborado desde el punto de vista de lo que la sociedad espera de la Educación Superior; la mejor manifestación de la pertinencia de la Educación Superior es la variedad de servicios que presta a la sociedad. Una definición de pertinencia radica en el papel que cumple y el lugar que ocupa la Educación Superior en función de las necesidades y demandas de los diversos sectores sociales. Las instituciones de Educación Superior tendrán que reorientar su oferta académica en función de las necesidades del sector productivo y las necesidades del desarrollo. Además, deberán superar también una visión tradicionalista de las carreras, demasiado inflexible para las necesidades del mundo actual. Fortalecer la investigación científica y tecnológica para dar respuestas a los problemas que sufre la sociedad actual, problemas en el ámbito económico, en el área social y en el medio ambiente. Por otra parte, para todos es evidente la interdependencia que existe entre pertinencia y calidad, al punto que se puede decir que la una presupone a la otra como las dos caras de una misma moneda. Pertinencia y calidad deben marchar siempre de la mano
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