184 research outputs found

    Ampurias en la Antigüedad Tardía. Una nueva perspectiva

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    Traditional historiography has always maintained that during the Late Antiquity period, the city of Ampurias represented no more than a faint shadow of its former greatness. However, a careful reading of the data and a body of new evidence, both textual and archaeological, allow us to establish the facts in a very different way and to recognize that this stage in its history was a very important one for the city, which was an episcopal see and the most active port in a very vast territoryLa historiografía tradicional ha venido sosteniendo que durante la Baja Antigüedad la ciudad de Ampurias no era otra cosa que el fantasma apenas tangible de su lejana grandeza. Sin embargo, una lectura atenta de los datos y un conjunto de nuevas evidencias, textuales y arqueológicas, permiten plantear los hechos de manera bien distinta y reconocer, para esta etapa histórica, un período de gran importancia para la ciudad. sede episcopal y el puerto más activo de un vastísimo territorio

    Notas llegadas a redacción

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    MISMIS: Desinformación y agresividad en los medios de comunicación social: agregando información y analizando el lenguaje

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    [EN] The general objectives of the project are to address and monitor misinformation (biased and fake news) and miscommunication (aggressive language and hate speech) in social media, as well as to establish a high quality methodological standard for the whole research community (i) by developing rich annotated datasets, a data repository and online evaluation services; (ii) by proposing suitable evaluation metrics; and (iii) by organizing evaluation campaigns to foster research on the above issues.[ES] Los objetivos generales del proyecto son abordar y monitorizar la desinformación (noticias sesgadas y falsas) y la mala comunicación (lenguaje agresivo y mensajes de odio) en los medios de comunicación social, así como establecer un estándar metodológico de calidad para toda la comunidad investigadora mediante: i) el desarrollo de datasets anotados, un repositorio de datos y servicios de evaluación online; ii) la propuesta de métricas de evaluación adecuadas; y iii) la organización de campañas de evaluación para fomentar la investigación sobre las cuestiones mencionadas.The MISMIS project (PGC2018-096212-B) is funded by the Spanish Ministry of Science, Innovation and Universities.Rosso, P.; Casacuberta Nolla, F.; Gonzalo, J.; Plaza, L.; Carrillo, J.; Amigó, E.; Verdejo, MF.... (2020). MISMIS: Misinformation and Miscommunication in social media: aggregating information and analysing language. Procesamiento del Lenguaje Natural. (65):101-104. https://doi.org/10.26342/2020-65-13S1011046

    A comparative limnological study of the Guadalhorce reservoirs system (Málaga,SE.Spain)

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    15 páginas ; 6 Figuras ; 2 TablasA partir de 10s muestreos efectuados durante el período de mezcla (marzo de 1988) y estratificación (setiembre de 1988) en 10s tres embalses del sistema Guadalhorce, se analizan sus diferencias fisicoquimicas y biológicas. Aunque 10s tres embalses presentan un contenido de sales disueltas relativamente alto, Conde de Guadalhorce es de aguas carbonatadas, mientras que en Guadalhorce son importantes 10s cloruros y Guadalteba se encuentra en una posición intermedia. En estos dos 61- timos embalses la presencia de cloruros determina la existencia de una haloclina muy marcada, que en el caso de Guadalhorce es permanente. Desde el punto de vista de sus características tróficas, Guadalteba y Guadalhorce son eutróficos, 10 que se refleja en la alta concentración de nutrientes y pigmentos, asi como por tener respiración y ETS elevados. Por el contrario, Conde de Guadalhorce puede considerarse como mesotrófico a partir de 10s mismos parámetros, además de permanecer con oxigeno en el hipolimnion durante todo el verano.This research has been supported by the Comisión Asesora de Investigación Científica y Técnica grant nª PB85-0166 and sponsored by the Dirección General de Obras Hidráulicas of the Ministry of Public AffairsPeer reviewe

    Soil coverage, phytomass production and, nutrient accumulation in maize and legumes intercropping system.

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    The maize intercropped with legume cover crops are used at low technological agriculture, due it?s potential to suppress weeds, recycle nutrients, and cover the soil. Weeds suppression it is important due to its competition effect on the commercial crops. The nutrient recycling it is important due to the low fertilizer use on low technological agriculture. The soil cover it is important to prevent the erosion and reduce the nutrients leaching. All those positive effects can be influenced due to the cultivated species on the consortium. This study aimed to evaluate the soil coverage, the phytomass production and, the accumulation of nutrients by plants in a maize and legume cover crops intercropping system. The experiment consisted of rustic maize ?Caiano de Sobrália? variety, intercropped with Brazilian velvet bean, black mucuna, lablab-bean and pigeon pea; a control treatment (sole maize culture) was added. The maize was sown on the experiment; 64 DAE, the legumes were sowed. The soil cover rates were evaluated at 0, 64, 84, 120, and 144 DAE. The corn grains were harvested at 120 DAE, resulting in the corn grain yields. The remaining portion of maize and entire legume cover crop plants were sampled at 144 DAE, when the accumulation of dry mass and nutrient were measured. The consortium system did not affect the corn grains yield and, the soil cover rate provided by maize plants. The black mucuna had the greatest weeds suppression and, nutrient accumulation among the legumes cover crops evaluated

    Dehydrogenation of dimethylamine-borane mediated by Group 1 pincer complexes

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    Group 1 salts containing carbazolido NNN pincer ligands are precatalysts for the dehydrogenation of Me2NH·BH3. NMR monitoring and DOSY studies show a heavy dependence on the metal and solvent, allowing in some cases selective formation of dehydrogenation products consistent with hydrogen liberation
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