778 research outputs found

    Changes in Ro-Ro transport tendencies in Santander Port

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    In recent years the Ro-Ro traffic has undergone major changes being the most significant the heavy loads transport in break bulk or static cargo, in other words, that the transport of bulky and heavy loads in conventional general cargo ships has move to Ro-Ro vessels over rolling platforms. Nowadays due to the high cost and fragility of these goods is needed to be handled with the utmost care. In this article we describe the transformation suffered by this type of maritime traffic and the development in Ro-Ro vessels cargo equipment.Postprint (published version

    GRASSP: a spectrograph for the study of transient luminous events

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    We present the main parameters, design features, and optical characterization of the Granada Sprite Spectrograph and Polarimeter (GRASSP), a ground- based spectrographic system intended for the analysis of the spectroscopic signature of transient luminous events (TLEs) occurring in the mesosphere of the Earth. It has been designed to measure the spectra of the light emitted from TLEs with a mean spectral resolution of 0.235 nm and 0.07 nm/px dispersion in the wavelength range between 700 and 800 nm. (C) 2016 Optical Society of AmericaSpanish Ministry of Science and Innovation, Ministerio de Economia y Competitividad (MINECO) (ESP2013-48032-C5-5-R, ESP2015-69909-C5-2-R, FIS2014-61774-EXP); European Union FEDER Program; Ramon y Cajal Contract (RYC-2011-07801).Peer reviewe

    MEGARA Optical design: the new integral field unit and multi-object spectrograph for the GTC 10m telescope

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    We describe the optical design of MEGARA, the future optical Integral Field Unit (IFU) and Multi-Object Spectrograph (MOS) for the 10.4-m Gran Telescopio CANARIAS (GTC). MEGARA is being built by a Consortium of public research institutions led by the Universidad Complutense de Madrid (UCM, Spain) that also includes INAOE (Mexico), IAA-CSIC (Spain) and UPM (Spain)

    How the Manila amendments to the STCW code enhance training in maritime safety and security

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    This paper shows the changes that have occurred to the Manila Amendments to the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers Code (STCW 2010 Code). In the School of Maritime Engineering of the University of Cantabria with the degrees in Nautical Engineering and Maritime Transport (Deck Officers), Marine Engineering (Engine Officers) and Maritime Engineering (Naval Engineering), we have taken into consideration all these changes and have adapted them to the academic training of the STCW 2010 Code. We recognize the need to train our maritime protection students (future officers, Captains and Chief Engineers of the Spanish Merchant Marine) with the latest and most effective tools and protocols. Thanks to the Maritime Collaborative Website of the Spanish Navy (ENCOMAR) we can complement and ensure the theoretical and practical training of our students to improve their knowledge on Maritime Security.Postprint (published version

    Optical design for MEGARA: a multi-object spectrograph for the GTC

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    MEGARA is a multi-object spectrograph project for the 10.4m Gran Telescopio Canarias with medium to high resolution: R ~ 5600 - 17000. The instrument operates in three modes that cover different sky areas and that can run simultaneously: (1) the compact mode through a large central Integral Field Unit with minimum fiber pitch, covering a field of view on sky of 12 arcsec × 14 arcsec, (2) the sparse mode with fibers covering 1 arcmin × 1arcmin in three pointings and (3) the dispersed mode with a grid of nearly 100 robotics positioners able to place 7-fiber minibundles over a large field of view of 3.5 arcmin × 3.5 arcmin. The spectrograph is composed by a pseudo-slit, where the fibers are placed simulating a long slit; a slit shutter is placed just behind the pseudo-slit, a collimator, a 162mm pupil where the volume phase holographic gratings are placed, and the camera with the detector. Here we describe the spectrograph optical rationale, the conceptual optical design and the expected system performance

    Caracterización clínica y epidemiológica de pacientes con diagnóstico post-mortem de colitis pseudomembranosa

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    Introducción: La incidencia de infecciones asociadas a clostridium difficile en el contexto mundial, incluida Cuba, varía entre 0,6 y 2,1% del total de pacientes hospitalizados.Objetivo:Caracterizar clínica y epidemiológicamente a los pacientes con diagnóstico post-mortem de colitis pseudomembranosa.Material y Métodos: Se realizó un estudio observacional, descriptivo, de corte transversal, utilizando un universo de 49 pacientes fallecidos en el Hospital “Abel Santamaría Cuadrado” a los cuales se les diagnosticó colitis pseudomembranosa a través de necropsia. Las variables estudiadas fueron: sexo, edad, estadía, servicio de procedencia, prescripción antibiótica, incidencia del padecimiento, uso de nutrición a través de sonda nasogástrica y el empleo de Omeprazol.Resultados: El promedio de edades fue de 73,2 años y predominaron los que tenían 65 o más. La estadía promedio fue de 38 días y más del 70% procedieron de unidades de cuidados intensivos. En el 63,2% se empleó IBP en el tratamiento y el 71,4% necesitó alimentación a través de sonda nasogástrica. Los grupos de antibióticos más usados fueros las cefalosporinas de tercera generación, seguidas por las quinolonas, las cefalosporinas de cuarta generación y los carbapenémicos.Conclusiones: Las características clínicas y epidemiológicas de los pacientes diagnosticados de infecciones asociadas a clostridium difficile corresponden generalmente a pacientes ancianos, con larga estadía hospitalaria, uso reciente de antibióticos, estancia en unidades de cuidados intensivos, con alimentación a través de sonda nasogástrica y tratamiento con IBP

    Cu(II) adsorption from aqueous solutions using the inner and outer portions of sugarcane bagasse

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    Artículo publicado en revista indizadaIn the present work, the adsorption capacity of internal and external portions of treated sugarcane bagasse (SCB) to remove Cu(II) from aqueous solution was evaluated. In order to reuse this solid waste as an effective adsorption material, both portions were treated with three different solutions (hot water, ethanol and NaOH) to remove sugar, external gummy tissue and impurities. Adsorption experiments were carried out in a batch system at room temperature. The kinetic data were fitted to pseudo-second order and Elovich models for the internal portion, and to the Elovich model for the external portion reaching equilibrium times from 8 to 24 h. Freundlich and Langmuir–Freundlich models described well the adsorption behavior of all systems. The compositional differences of the two portions of SCB and the surface chemistry were analyzed. Material characterization by scanning electron microscopy, Fourier transformed infrared spectroscopy, and X-ray photoelectron spectroscopy demonstrated morphologic and chemical modifications of the material after each treatment. Results showed that external SCB treated with a sodium hydroxide solution and internal SCB treated with ethanol solution were the best adsorbent materials, and provided a surface with more affinity to remove Cu(II).CONACYT-280518 "Fortalecimiento y desarrollo de la infraestructura científica y tecnológica" CONACYT beca escolar No 44972

    EIFIS: a modular extreme integral field spectrograph for the 10.4m GTC

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    EIFIS (Extreme Integral FIeld Spectrograph) is a modular integral field spectrograph, based on image slicers, and makes use of new, large format detectors. The concept is thought to cover the largest possible field of view while producing spectroscopy over the complete optical range (3 000 - 10 000 \r{A}) at a medium resolving power of about 2400. In the optimal concept, each module covers a field of view of 38" x 38" with 0.3" spaxels, which is fed into a double spectrograph with common collimator optics. The blue arm covers the spectral range between 3000 and 5600 \r{A} and the red arm between 5400 and 10100 \r{A}, allowing for an overlap range. The spectra are imaged onto 9.2k x 9.2k detectors using a double pseudoslit. The proposed design for the 10.4m Gran Telescopio Canarias uses a total of 6 such modules to cover a total of 2.43 square arcminutes. Here we will present the conceptual design of the instrument and a feasibility study of the optical and mechanical design of the spectrographs. We discuss the limitations and alternative designs and its potential to produce leading edge science in the era of extremely large telescopes and the James Webb Space Telescope.Comment: Submitted to the Proceedings of the SPIE, Astronomical Telescopes and Instrumentatio

    The leisure nautical sector in the atlantic area.

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    According to the so-called ”maritime economy”, maritime activities are one of the key elements of the Lisbon Strategy. According to the European Union, those sectors related to the exploitation of the seas have contributed to the building of the Atlantic Area identity. Some subsectors from the maritime economy face tough times, while other o er great opportunities for economic growth and employment. In this context the HARVEST ATLANTIC (Harnessing All Resources Valuable to Economies of Seaside Territories on the Atlantic) project is developed, approved by the Atlantic Area Interreg IV-B Program. This study includes the main results obtained from the above mentioned project related to the recreational nautical sector in four countries from the Atlantic area (Spain, Portugal, Ireland and Scotland). The surveys that were conducted among companies from the sector included di erent aspects related with their location, innovation, human capital and policy making

    Indirect determination of biochemistry reference intervals using outpatient data

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    Creatinine; Urea; Clinical chemistryCreatinina; Urea; Química clínicaCreatinina; Urea; Química clínicaThe aim of this study was to determine reference intervals in an outpatient population from Vall d’Hebron laboratory using an indirect approach previously described in a Dutch population (NUMBER project). We used anonymized test results from individuals visiting general practitioners and analysed during 2018. Analytical quality was assured by EQA performance, daily average monitoring and by assessing longitudinal accuracy between 2018 and 2020 (using trueness verifiers from Dutch EQA). Per test, outliers by biochemically related tests were excluded, data were transformed to a normal distribution (if necessary) and means and standard deviations were calculated, stratified by age and sex. In addition, the reference limit estimator method was also used to calculate reference intervals using the same dataset. Finally, for standardized tests reference intervals obtained were compared with the published NUMBER results. Reference intervals were calculated using data from 509,408 clinical requests. For biochemical tests following a normal distribution, similar reference intervals were found between Vall d’Hebron and the Dutch study. For creatinine and urea, reference intervals increased with age in both populations. The upper limits of Gamma-glutamyl transferase were markedly higher in the Dutch study compared to Vall d’Hebron results. Creatine kinase and uric acid reference intervals were higher in both populations compared to conventional reference intervals. Medical test results following a normal distribution showed comparable and consistent reference intervals between studies. Therefore a simple indirect method is a feasible and cost-efficient approach for calculating reference intervals. Yet, for generating standardized calculated reference intervals that are traceable to higher order materials and methods, efforts should also focus on test standardization and bias assessment using commutable trueness verifiers
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