169 research outputs found

    Las espectaculares grietas de Puerto Lumbreras

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    Pervaporation of the low ethanol content extracting stream generated from the dealcoholization of red wine by membrane osmotic distillation

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    This paper presents as main contribution the combination of membrane osmotic distillation (OD) to dealcoholize red wine with hydrophobic-hydrophilic pervaporation (PV) carried out to add value to the wastewater (extracting water) produced in OD, recycling water and generating bioethanol. Membrane OD with a commercial polypropylene hollow fiber module was applied to partially dealcoholize red wine from 14.0 to 11.0 v/v% ethanol. The OD extracting water, containing only ca. 5.3 wt% ethanol, was treated by sequential PV with both hydrophobic (PDMS or zeolite silicalite-1) and hydrophilic (zeolites mordenite or faujasite) membranes. This hydrophobic-hydrophilic PV produced two main products: bioethanol (recovering 88% of the ethanol removed from the wine) and a 99.4 wt% water-rich product. This water-rich product, with a very low ethanol content, was used as extracting water in the OD, giving rise to an analogous partially dealcoholized wine, in terms of aroma contents (as determined by gas chromatography for 25 compounds), to that achieved when using fresh water

    Effect of Patient Sex on the Severity of Coronary Artery Disease in Patients with Newly Diagnosis of Obstructive Sleep Apnoea Admitted by an Acute Coronary Syndrome

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    Background: The cardiovascular consequences of obstructive sleep apnoea (OSA) differ by sex. We hypothesized that sex influences the severity of acute coronary syndrome (ACS) in patients with OSA. OSA was defined as an apnoea–hypopnoea index (AHI)>15 events·h-1. We evaluated the severity of ACS according to the ejection fraction, Killip class, number of diseased vessels, number of stents implanted and plasma peak troponin level. Methods: We included 663 men (mean±SD, AHI 37±18 events·h-1) and 133 women (AHI 35±18 events·h-1) with OSA. Results: The men were younger than the women (59±11 versus 66±11 years, p<0.0001), exhibited a higher neck circumference (p<0.0001), and were more likely to be smokers and alcohol users than women (p<0.0001, p = 0.0005, respectively). Body mass index and percentage of hypertensive patients or diabetics were similar between sexes. We observed a slight tendency for a higher Killip classification in women, although it was not statistically significant (p = 0.055). For men, we observed that the number of diseased vessels and the number of stents implanted were higher (p = 0.02, p = 0.001, respectively), and a decrease in the ejection fraction (p = 0.002). Conclusions: This study shows that sex in OSA influences the severity of ACS. Men show a lower ejection fraction and an increased number of diseased vessels and number of stents implanted

    Points and areas prone to earthquake-induced landslides in the CARM. Base information for Civil Protection

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    Se presenta un trabajo de aplicación para la definición de posibles escenarios de catástrofe sísmica, donde deben de incorporarse los movimientos de ladera, como información de base para la última revisión del Plan Especial de Protección Civil ante el Riesgo Sísmico en la Región de Murcia (SISMIMUR). Para ello se ha confeccionado un inventario adecuado y un mapa a escala 1:200.000 que contiene los puntos y zonas más susceptibles a este tipo de fenómenos inducidos por los terremotos en la CARM que pueden afectar a núcleos urbanos, infraestructuras lineales (carreteras y ferrocarriles), balsas mineras, cursos de agua y cuerpos de agua (embalses y lagos). En el análisis solo se han seleccionado los puntos definidos como desprendimientos s.l., tipología predominante en la zona de estudio y de mayores efectos de cara al escenario de la catástrofe sísmica posible. Aunque en la mayoría de las infraestructuras evaluadas están alejadas de movimientos de ladera inventariados, hay núcleos de población importantes como Lorca, Águilas o Caravaca de la Cruz, entre otras, así como algunos tramos del creciente entramado urbano del litoral murciano con zonas de susceptibilidad alta. El tramo más susceptible sería el situado en la carretera RM-520, entre Archena y Abarán.In this work, we present a methodology to define potential seismic scenarios including seismic-induced landslides as background information for the latest revision of the “Plan Especial de Protección Civil ante el Riesgo Sísmico en la Región de Murcia (SISMIMUR)”. We first made an adequate inventory and a map at 1:200,000 scale containing the points and areas more susceptible to this type of seismic-induced effects in the CARM which may affect urban areas, lifelines(roads and railways), tailing dams, waterways and bodies of water (reservoirs and lakes). For this analysis, only points defined as rockfalls s.l. have been selected, since they are the predominant type of landslide in the area and it is associated to the greatest effects regarding a potential seismic scenario. Although most of the infrastructures evaluated are far from the inventoried landslides, some areas with high susceptibility have been identified near major population centers, such as Lorca, Águilas, Caravaca de la Cruz, etc., and near of some growing urban fabric areas located along the Murcia province coast. According to this study, the most vulnerable section would be located in the RM-520 road between Archena and Abarán

    Automated Spectrophotometric Assays for the Measurement of Ammonia and Bicarbonate in Saliva of Horses: Analytical Validation and Changes in Equine Gastric Ulcer Syndrome (EGUS)

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    © 2024. The authors. Once the embargo has passed, this document will be available under the CC-BY 4.0 license http://creativecommons.org/licenses/by /4.0/ This document is the published version of a published work that appeared in final form in Metabolites To access the final work, see DOI: https://doi.org/10.3390/metabo14030147Ammonia (NH3) and bicarbonate (HCO3) have been related to gastric ulcers in humans. Ammonia is considered a possible cause of gastric ulcers, whereas bicarbonate has a protective function. The presence of ulcers in the stomach of horses is defined as Equine Gastric Ulcer Syndrome (EGUS), which is a frequent disease in this species, and it has been associated with changes in saliva composition, such as in analytes related to inflammation, immune system and oxidative stress. The objectives of this study were (1) to perform an analytical validation of two automated spectrophotometric assays, one for ammonia and one for bicarbonate, in the horses’ saliva and (2) to evaluate their possible variations with EGUS. Analytical validation of the automated assays for ammonia and bicarbonate in the saliva of horses showed that both assays were precise and accurate. In addition, significantly higher values of ammonia and lower values of bicarbonate were found in the saliva of horses with EGUS compared to healthy horses. It can be concluded that ammonia and bicarbonate can be measured in the saliva of horses and that ammonia increases and bicarbonate decreases in this sample type could be related to the presence of EGUS in this species

    Regional subsidence modelling in Murcia city (SE Spain) using 1-D vertical finite element analysis and 2-D interpolation of ground surface displacements

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    Subsidence is a hazard that may have natural or anthropogenic origin causing important economic losses. The area of Murcia city (SE Spain) has been affected by subsidence due to groundwater overexploitation since the year 1992. The main observed historical piezometric level declines occurred in the periods 1982–1984, 1992–1995 and 2004–2008 and showed a close correlation with the temporal evolution of ground displacements. Since 2008, the pressure recovery in the aquifer has led to an uplift of the ground surface that has been detected by the extensometers. In the present work an elastic hydro-mechanical finite element code has been used to compute the subsidence time series for 24 geotechnical boreholes, prescribing the measured groundwater table evolution. The achieved results have been compared with the displacements estimated through an advanced DInSAR technique and measured by the extensometers. These spatio-temporal comparisons have showed that, in spite of the limited geomechanical data available, the model has turned out to satisfactorily reproduce the subsidence phenomenon affecting Murcia City. The model will allow the prediction of future induced deformations and the consequences of any piezometric level variation in the study area.This work has been supported by the Spanish Ministry of Economy and Competitiveness and EU FEDER funds under projects ESP2013-47780-C2-2-R and TEC2011-28201-C02-02 and by the project 15224/PI/10 from the Regional Agency of Science and Technology in Murcia. The European Space Agency (ESA) Terrafirma project funded all the SAR data processing with the SPN technique

    OGC SWE-based Data Acquisition System Development for EGIM on EMSODEV EU Project

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    The EMSODEV[1] (European Multidisciplinary Seafloor and water column Observatory DEVelopment) is an EU project whose general objective is to set up the full implementation and operation of the EMSO distributed Research Infrastructure (RI), through the development, testing and deployment of an EMSO Generic Instrument Module (EGIM). This research infrastructure will provide accurate records on marine environmental changes from distributed local nodes around Europe. These observations are critical to respond accurately to the social and scientific challenges such as climate change, changes in marine ecosystems, and marine hazards. In this paper we present the design and development of the EGIM data acquisition system. EGIM is able to operate on any EMSO node, mooring line, sea bed station, cabled or non-cabled and surface buoy. In fact a central function of EGIM within the EMSO infrastructure is to have a number of ocean locations where the same set of core variables are measured homogeneously: using the same hardware, same sensor references, same qualification methods, same calibration methods, same data format and access, and same maintenance procedures.Peer ReviewedPostprint (published version

    Data acquisition system development for EGIM on EMSODEV EU Project

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    The EMSODEV1 (European Multidisciplinary Seafloor and water-- column Observatory DEVelopment) is a UE project whose general objective is to set up the full implementation and operation of the EMSO distributed Research Infrastructure (RI), through the development, testing and deployment of an EMSO Generic Instrument Module (EGIM). The EGIM module will measure various ocean parameters in a long-term consistent, accurate and comparable manner. These measurements are critical to respond accurately to the social and scientific challenges such as climate change, changes in marine ecosystems, and marine hazards. Here we present the current status of the EGIM data acquisition system development.Peer ReviewedPostprint (published version

    Changes in the saliva proteome analysed by gel-proteomics in horses diagnosed with Equine gastric ulcer Syndrome (EGUS) at diagnosis and after successful treatment

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    © 2024. The authors. This document is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by /4.0/ This document is the accepted version of a published work that appeared in final form in Animals To access the final work, see DOI: https://doi.org/10.1016/j.rvsc.2023.105112Equine gastric ulcer syndrome (EGUS) has a high prevalence, being currently one of the more frequent diseases in horses. Saliva is a source of biomarkers that change in EGUS and can potentially be used for treatment monitoring. We aimed to identify changes in the salivary proteome by using gel proteomics in horses with EGUS and also the possible changes that could occur after successful treatment for this disease. Saliva samples were collected from 9 horses with EGUS before and after treatment and 9 matched healthy con-trols. SDS-PAGE (1DE) and two-dimensional gel electrophoresis (2DE) were performed in these samples, and significantly different protein bands and spots were identified by mass spectrometry. In 1DE, increases in bands containing containing family A member 2 and immunoglobulin-heavy constant mu) and decreased in bands containing prolac-tin-inducible protein and Ribosomal proteinS9 were observed in EGUS horses compared to healthy ones. In addition decreases in bands containing Major allergen Equ c 1, Gluta-thione transferase and 6-phosphogluconate dehydrogenase, decarboxylating decreased in EGUS after successful treatment compared to pre-treatment were observed in EGUS horses after treatment. For the 2DE analysis, sets of saliva samples were organized into (a) three pools from a cohort of nine horses afflicted with EGUS before undergoing treatment, (b) another three pools were constituted from the same horses with EGUS after the treatment and (c) three pools from 9 healthy horses. Thioredoxin (TRX), a protein showing signifi-cant changes at 2DE before and after EGUS treatment, was validated by an ELISA kit in 12 horses with EGUS before and after treatment. Results of 2DE showed the hoses with EGUS have changes in saliva proteins compared to healthy horses, with increases in ADA, tri-osephosphate isomerase, keratins and immunoglobulin heavy constant mu and decreases in CA and albumin. These changes would indicate various physiopathological mecha-nisms such as the activation of the immune system, decrease in the stomach defence mechanisms and inflammation involved in this disease. In addition, the successfully treated horses presented lower expression levels of TRX after a successful treatment in proteomics and also measured with a commercially available ELISA kit. Overall, horses with EGUS have protein changes in their saliva when measured with gel proteomics compared with healthy horses, and they also showed changes after successful treatment. These proteins could be potential biomarkers for detection and monitoring treatment re-sponse in EGUS

    Diseño de una máquina de rotomoldeo basada en el principio de giróscopo

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    En este artículo, se presenta el diseño de una máquina tipo giróscopo de dos ejes utilizada en el rotomoldeo para la fabricación de piezas ornamentales con mármol sintético. La característica principal del diseño es el movimiento independiente de cada uno de los ejes de rotación, que es suministrado por motores independientes. Las velocidades de rotación sugeridas para cada uno de los ejes se establecieron a partir de experimentos, documentados en publicaciones previas. Se usaron las ecuaciones dinámicas para establecer las expresiones del torque en cada eje, de acuerdo con la masa y forma (inercia) de los elementos rotatorios. El establecimiento del algoritmo y su respectiva programación en Matlab fueron posibles gracias a un diseño conceptual y detallado, sumado a las ecuaciones dinámicas que rigen el movimiento. El programa Matlab calcula factores de seguridad de componentes disponibles en el mercado local y arroja el dimensionamiento inicial, que sirve para crear un modelo CAD mediante la herramienta paramétrica DriveWorkXpress de SolidWorks. Este modelo es posteriormente usado para simulaciones de elemento finito y para generar planos de fabricación. El procedimiento se ilustró para el caso de un ornamento de tamaño 0.9x0.9x0.6m.The design of a gyroscope-based machine for imitation marble rotomolding is presented. The main feature of the proposed model is the capability of independent rotational motion for each axis. The rotational speeds were set from documented experimental reports. Dynamic equations were used to establish the torque expressions according to the mass and shape (inertia) on the rotatory elements. A Matlab program was created to evaluate the safety factors of the main components that are commercially available in the local market. Parametric design capability of DriveWorkXpress was used to create a CAD model in SolidWorks to perform finite element analysis to verify results and generate the machine blueprints. The proposed methodology was illustrated with an ornamental imitation marble piece of 0.9x0.9x0.6m dimensions
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