1,251 research outputs found
Industry-peppers harvest mechanization.
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.
Para mecanizar de forma integral el cultivo de pimientos de pimentĂłn es necesario el desarrollo de la mecanizaciĂłn de la recolecciĂłn. En este trabajo se analizan los resultados obtenidos al ensayar el sistema de desprendimiento por peinado del fruto utilizando dos cosechadoras de judĂa verde sobre el cultivo sembrado a 20 cm y a 40 cm entre lĂneas, 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
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
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
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]
Contiene fotografĂas pertenecientes al archivo fotográfico del diario "RegiĂłn", publicadas entre 1974 y 1983Algunas fotos no indican autorĂa; 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
MediciĂłn de parámetros fĂsicos, biolĂłgicos y quĂmicos en el tramo estuarino del rĂo Ebro
[ES] En este artĂculo 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 fĂsicos, biolĂłgicos y quĂmicos en la zona del Delta del Ebro, tanto en el tramo estuarino del rĂo como en la pluma de agua dulce que se forma en las cercanĂas de la desembocadura. AquĂ 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 UniĂłn Europea y del proyecto MAR96-1856 del Programa CYTMAR de la ComisiĂłn Interministerial de Ciencia y TecnologĂa (CICYT). TambiĂ©n se agradece la contribuciĂłn de todos los que participaron en las campañas de campo. Finalmente cabe destacar la colaboraciĂłn de la ConfederaciĂłn Hidrográfica del Ebro, que proporcionĂł los datos de caudales del rĂo y del Centro de Estudios de Puertos y Costas (CEPYC) del CEDEX, que prestĂł 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). MediciĂłn de parámetros fĂsicos, biolĂłgicos y quĂmicos en el tramo estuarino del rĂo Ebro. INGENIERIA DEL AGUA. 8(4):459-468. http://hdl.handle.net/10251/36091S4594688
Revista de Vertebrados de la Estación Biológica de Doñana
Clave preliminar de las escamas de los peces de agua dulce de España, a nivel de familiaExito reproductor del Buitre leonado (Gyps fulvus) en NavarraAlimentaciĂłn del Gavilán (Accipiter nisus) en la Isla de TenerifeEl Verdecillo (Serinus serinus): Tendencias en la estaciĂłn de nidificaciĂłn, en el tamaño del huevo y en la supervivencia.las batidas como mĂ©todo de censo en especiesde caza mayor: aplicaciĂłn al caso del JabalĂ (Sus scrofa L.) en la provincia de Burgos (Norte de España)La adquisiciĂłn de madurez sexual en el camaleĂłn comĂşn (Chamaeleo chamaeleon)Nuevas citas de Hemidactylus turcicus en la provincia de CáceresLa focha comĂşn (Fulica atra) en la isla de Gran Canaria: nueva especie nidificante en el archipiĂ©lago CanarioTraslado de huevos en incubaciĂłn por la urraca (Pica pica)PredaciĂłn de Falco peregrinus sobre Oryctolagus cuniculusCuatro nuevas especies de aves para Bolivia.Sobre la utilizaciĂłn de nidos de golondrina comĂşn abandonados.Parasitismo mĂşltiple del crĂalo (Clamator glandarius)PredaciĂłn del topo de rio (Galemys pyrenaicus, Geoffroy 1811) por parte de la lechuza comĂşn (Tyto alba, Scopoli 1769)PredaciĂłn 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 LĂ©ridaObservaciones sobre la incidencia de Rattus (Fischer, 1803) en los cultivos ibĂ©ricos de caña de azĂşcaSituaciĂłn actual de la jutiita de la tierra Capromys sanfelipensis (Rodentia, Mammalia)Notas sobre la intraducciĂłn y expansiĂłn de la ardilla comĂşn 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
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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