1,251 research outputs found

    Industry-peppers harvest mechanization.

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    Production of peppers for deshidration (paprika) and for extraction of natural colorants is of great importance in some Mediterranean irrigation areas. In the area of Badajoz (Spain) traditional production, handling and postharvest systems are no longer feasible, although a very good quality and potential market exist for this product. All aspects of mechanized production and handling have been addressed: direct seeding and transplanting, cultivation systems and mechanical harvesting are searched to be adopted in a new production system. A study of size, shape and fruiting pattern of the new varieties was performed. A feasibility study of mechanized harvesting was also made. Results of field testing of different types of harvesters and performance of existing picking heads are presented, some of which yield a feasible solution for the growers of industry peppers in the area. The design, construction and field testing results of a new picking head based on the double-helix principle is presented

    Recolección Mecánica de Pimiento de Pimentón: Ensayos de Campo.

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    Para mecanizar de forma integral el cultivo de pimientos de pimentón es necesario el desarrollo de la mecanización de la recolección. En este trabajo se analizan los resultados obtenidos al ensayar el sistema de desprendimiento por peinado del fruto utilizando dos cosechadoras de judía verde sobre el cultivo sembrado a 20 cm y a 40 cm entre líneas, con resultados positivos referidos tanto al porcentaje de frutos recogidos como a la capacidad de trabajo de la máquina

    Open Peer Review Module (OPRM). Final Report

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    Research productivity is increasing at an unprecedented rate. Technological innovations, a surge in available computing power, and the ease with which digital information is stored and communicated is helping researchers to cross experimentation boundaries, to increase data availability, and to facilitate the transfer of knowledge. As a result, traditional research is being transformed into a dynamic and globally interconnected effort where ideas, tools and results can be made instantly accessible to the entire academic community. Institutional and multidisciplinary open access repositories play a crucial role in this emerging landscape by enabling immediate accessibility to all kinds of research output. One important element still missing from open access repositories, however, is a quantitative assessment of the hosted research items that will facilitate the process of selecting the most relevant and distinguished content. Common currently available metrics, such as number of visits and downloads, do not reflect the quality of a research work, which can only be assessed directly by peers offering their expert opinion together with quantitative ratings based on specific criteria. To address this issue we developed an Open Peer Review Module (OPRM) to be installed on existing open access repositories and offered as an overlay service. Any digital research work hosted in a compliant repository can then be evaluated by an unlimited number of peers who offer not only a qualitative assessment in the form of text, but also quantitative measures that are used to build the reputation of the research work and its authors. Crucially, this evaluation system is open and transparent. By open we mean that the full text of the peer reviews are publicly available along with the original research work. By transparent we mean that the identity of the reviewers is disclosed to the authors and to the public. In our model, openness and transparency are two elemental aspects we consider necessary to address the issue of biased or non-expert opinions, which is inherent in the anonymous peer review model, characterized by the unaccountability of reviewers. Importantly, our open peer review module includes a reviewer reputation system based on the assessment of reviews themselves by other peer reviewers. This allows a sophisticated scaling of the importance of each review on the overall assessment of a research work, based on the reputation of the reviewer. The implementation of a peer review layer on top of institutional repositories could have the potential to transform the current academic publication landscape by introducing new scholarly workflows where a research item can be openly evaluated by the world’s experts right at the institutional repository of its authors, before being submitted to an academic journal. This workflow challenges the current practices of peer review research evaluation. In most cases, journals, acting as brands in a competitive market, foster academic competition for a limited number of publication slots, instead of promoting open scholarship and collaboration. The integration of peer review in repositories will enable direct and transparent academic collaboration between authors and reviewers. In addition, the use of the OPRM will produce novel metrics directly reflecting the perceived quality of a research work by expert peers, contrary to current available altmetrics that only indirectly account for quality through usage statistics.OpenAIR

    Estudio preliminar del potencial energético de cuesco de palma y cáscara de coco en Colombia1

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    The use of agro-industrial waste in the energy industry has developed in recent years due to its application solving two different problems: the treatment of solid residues and the reduction of greenhouse gases. In Colombia there are many agroindustry residues; among them are coconut shells (the part that protects the white pulp) and the cuesco (shell of the fruit) of the African oil palm, both of which can be used for energy production. The authors present a bibliographical review through which it is possible to determine the energetic potential of these residues. This is the first stage of a project undertaken in 2011 by the research group “Mechanisms for clean development and energy management” of the faculty of Engineering of the Universidad Nacional de Colombia, that seeks to produce electricity through fixed bed gasification of said waste. El uso de residuos agroindustriales en la industria energĂ©tica ha tomado fuerza en los Ăşltimos años debido a que su aplicaciĂłn como biomasa ha solucionado dos problemas actuales: el tratamiento de residuos sĂłlidos y la emisiĂłn de gases de efecto invernadero. En Colombia, existen varios residuos agroindustriales, entre ellos, la cáscara de coco (protege la pulpa blanca) y el cuesco de palma africana (cáscara del fruto) utilizados en la generaciĂłn de energĂ­a gracias a su poder calorĂ­fico. Los autores enseñan una revisiĂłn bibliográfica que sirve de base para determinar el potencial energĂ©tico de dichos residuos. Esta es la primera etapa del proyecto de investigaciĂłn iniciado en el 2011 por el grupo de investigaciĂłn “Mecanismos de desarrollo limpio y gestiĂłn energĂ©tica de la Facultad de IngenierĂ­a de la Universidad Nacional de Colombia”, el cual pretende producir energĂ­a elĂ©ctrica mediante la gasificaciĂłn en lecho fijo de los residuos antes nombrados

    Analysis of age-related left ventricular collagen remodeling in living donors: Implications in arrhythmogenesis

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    Age-related fibrosis in the left ventricle (LV) has been mainly studied in animals by assessing collagen content. Using second-harmonic generation microscopy and image processing, we evaluated amount, aggregation and spatial distribution of LV collagen in young to old pigs, and middle-age and elder living donors. All collagen features increased when comparing adult and old pigs with young ones, but not when comparing adult with old pigs or middle-age with elder individuals. Remarkably, all collagen parameters strongly correlated with lipofuscin, a biological age marker, in humans. By building patient-specific models of human ventricular tissue electrophysiology, we confirmed that amount and organization of fibrosis modulated arrhythmia vulnerability, and that distribution should be accounted for arrhythmia risk assessment. In conclusion, we characterize the age-associated changes in LV collagen and its potential implications for ventricular arrhythmia development. Consistency between pig and human results substantiate the pig as a relevant model of age-related LV collagen dynamics. © 2022 The Author(s

    [Real Madrid I] [Material gráfico]

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    Contiene fotografías pertenecientes al archivo fotográfico del diario "Región", publicadas entre 1974 y 1983Algunas fotos no indican autoría; el resto firmadas por Foto Sierra (Oviedo), Foto E. Gar (Oviedo), Foto Arsenio (Trubia, Oviedo), Foto Piñera (Oviedo), Gil del Espinar (Bilbao), Europa Press, Efe, Cifra Gráfic

    Medición de parámetros físicos, biológicos y químicos en el tramo estuarino del río Ebro

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    [ES] En este artículo se describen las campañas de campo CYTMAR I y II realizadas en la primavera y el verano de 1997, con el fin de estudiar los procesos y los flujos físicos, biológicos y químicos en la zona del Delta del Ebro, tanto en el tramo estuarino del río como en la pluma de agua dulce que se forma en las cercanías de la desembocadura. Aquí el estudio se ha centrado en la zona estuarina, presentando algunos resultados preliminares y analizando las diferencias estacionales observadas.Este trabajo forma parte del proyecto FANS (contrato No. MAS3-CT95-0037) del Programa MAST-III de la Unión Europea y del proyecto MAR96-1856 del Programa CYTMAR de la Comisión Interministerial de Ciencia y Tecnología (CICYT). También se agradece la contribución de todos los que participaron en las campañas de campo. Finalmente cabe destacar la colaboración de la Confederación Hidrográfica del Ebro, que proporcionó los datos de caudales del río y del Centro de Estudios de Puertos y Costas (CEPYC) del CEDEX, que prestó algunos de los equipos utilizados en las campañas.Sierra, J.; González Del Rio Rams, J.; Flos, J.; Sánchez Arcilla, A.; Movellán, E.; Rodilla Alamá, M.; Mösso, C.... (2001). Medición de parámetros físicos, biológicos y químicos en el tramo estuarino del río Ebro. INGENIERIA DEL AGUA. 8(4):459-468. http://hdl.handle.net/10251/36091S4594688

    Revista de Vertebrados de la Estación Biológica de Doñana

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    Clave preliminar de las escamas de los peces de agua dulce de España, a nivel de familiaExito reproductor del Buitre leonado (Gyps fulvus) en NavarraAlimentación del Gavilán (Accipiter nisus) en la Isla de TenerifeEl Verdecillo (Serinus serinus): Tendencias en la estación de nidificación, en el tamaño del huevo y en la supervivencia.las batidas como método de censo en especiesde caza mayor: aplicación al caso del Jabalí (Sus scrofa L.) en la provincia de Burgos (Norte de España)La adquisición de madurez sexual en el camaleón común (Chamaeleo chamaeleon)Nuevas citas de Hemidactylus turcicus en la provincia de CáceresLa focha común (Fulica atra) en la isla de Gran Canaria: nueva especie nidificante en el archipiélago CanarioTraslado de huevos en incubación por la urraca (Pica pica)Predación de Falco peregrinus sobre Oryctolagus cuniculusCuatro nuevas especies de aves para Bolivia.Sobre la utilización de nidos de golondrina común abandonados.Parasitismo múltiple del críalo (Clamator glandarius)Predación del topo de rio (Galemys pyrenaicus, Geoffroy 1811) por parte de la lechuza común (Tyto alba, Scopoli 1769)Predación del zorro (Vulpes vulpes) sobre un pollo de buitre leonado (Gyps fulvus).Vulpes vulpes L. criando en una colonia de marmota (Marmota marmota L.) en el pirineo de LéridaObservaciones sobre la incidencia de Rattus (Fischer, 1803) en los cultivos ibéricos de caña de azúcaSituación actual de la jutiita de la tierra Capromys sanfelipensis (Rodentia, Mammalia)Notas sobre la intraducción y expansión de la ardilla común en Sierra Nevada, sureste de EspañaPeer reviewe

    Search for New Physics with Jets and Missing Transverse Momentum in pp collisions at sqrt(s) = 7 TeV

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    A search for new physics is presented based on an event signature of at least three jets accompanied by large missing transverse momentum, using a data sample corresponding to an integrated luminosity of 36 inverse picobarns collected in proton--proton collisions at sqrt(s)=7 TeV with the CMS detector at the LHC. No excess of events is observed above the expected standard model backgrounds, which are all estimated from the data. Exclusion limits are presented for the constrained minimal supersymmetric extension of the standard model. Cross section limits are also presented using simplified models with new particles decaying to an undetected particle and one or two jets
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