Los Poyos del Molinillo (Frigiliana): new site of the Bronze Age in the East Axarquía (Málaga, Andalucía)

En este trabajo damos a conocer un nuevo yacimiento descubierto recientemente en el municipio de Frigiliana. La delimitación del área denominada Los Poyos del Molinillo permitió definir la existencia de un poblado y una covacha con restos de una inhumación. El estudio de los materiales arqueológicos, que incluye cerámica, piezas metálicas o elementos de molturación, o la datación AMS obtenida, permiten adscribir el yacimiento a la Edad del Bronce y ampliar el conocimiento de esta etapa en la Axarquía oriental (Málaga, Andalucía).In this work we present a new site recently discovered in the Frigiliana municipality (Málaga). The spatial delimitation of the so called Los Poyos del Molinillo area let us define a Bronze age settlement and an inhumation burial cave. The archaeological record includes ceramic, metallic items or grinding elements, all of them belonging to the Bronze Age, as well as an AMS Radiocarbon data. This site extends the knowledge about this period in the Eastern Axarquía (Málaga, Andalucía)

Riesgo de subsidencia kárstica en áreas urbanas: el caso de Zaragoza

Parte del monográfico "Riesgos geológicos externos".[EN] This paper deals with the problems generated by karst in gypsum around Zaragoza, the development of alluvial sinkholes and the concomitant risks. Sinkhole geometry depends on the mechanical behaviour of the cover overlying the evaporitic bedrock: non-cohesive soils favour the development of basin and funnel shaped dolines, whereas cohesive covers lead to the development of well-shaped collapses. Surface survey in areas prone to develop dolines is based on aerial photographs, in situ features (such as topographic depressions, stepped ground, anomalous man-made fills, wet-ground vegetation), and location of building pathologies in urban areas. In some cases, the structure and geometry of dolines can be studied in section (road cuts, for instance), where the features of natural fills allow to characterize the evolutionary patterns and sedimentation- subsidence interactions. Through dating of such fills the rate of subsidence can be estimated, and linked to possible episodes of climate variations. Doline evolution through time, either by comparison of aerial photographs taken in different years or by instrumental survey, yields the scenario of a dynamic process with subsidence rates up to 12 cm/year, where cycles of steady subsidence periods and sudden collapse are identified. In the Zaragoza area, the consequences of karst subsidence are outstanding. They dramatically increased from the 70’s, when large portions of the territory, formerly of agricultural use, turned into urban, industrial and service uses. Prevention and hazard management of karstic risks on urban and peri-urban areas must include: 1) early detection of the problem, in surface as well as underground (by means of geophysical surveys), and 2) adaptation of land use to the degree of affection by karst and the potential susceptibility. Geology, geotechnics and engineering have specific roles on risk management strategies by diminishing either the exposition to karst hazard or the vulnerability of man made structures.[ES] Este trabajo analiza, desde múltiples puntos de vista, la problemática del karst en yesos en el entorno de Zaragoza, el desarrollo de dolinas aluviales y los riesgos que éstas conllevan. La morfología de las dolinas depende del comportamiento mecánico de la cobertera situada sobre el sustrato yesífero: en coberteras sin cohesión aparecen morfologías en embudo y en cubeta, producidas por subsidencia continuada, mientras en coberteras con cohesión se producen dolinas en ventana provocadas por colapso brusco. El reconocimiento superficial de las dolinas se basa en la observación de fotografías aéreas, en el análisis visual del terreno (depresiones topográficas, escalones, áreas de vegetación o rellenos antrópicos anómalos) y en la observación y análisis de daños en áreas urbanizadas. También pueden estudiarse la geometría y la estructura interna de las dolinas en secciones del terreno donde éstas hayan quedado expuestas. Así, las características de sus rellenos naturales permiten conocer las pautas y tasas de evolución y las interacciones entre la subsidencia kárstica y los procesos sedimentarios. El estudio de la evolución temporal de las dolinas, a partir de la comparación de fotografías aéreas de distintos años o del seguimiento instrumental de las mismas, ha permitido reconocer que se trata de un proceso dinámico que llega a alcanzar velocidades de hundimiento de 12 cm/año. En dicha evolución es frecuente la ocurrencia cíclica de periodos de subsidencia lenta y eventos de hundimiento brusco. La afección causada por la subsidencia kárstica en Zaragoza es muy significativa. Ésta se incrementó a partir de los años 70 del siglo pasado, cuando buena parte del suelo agrícola que circundaba la ciudad fue destinado a uso urbano, industrial y grandes infraestructuras. La prevención y manejo del riesgo kárstico en áreas urbanas y peri-urbanas debe contemplar: (1) la detección precoz de los fenómenos tanto en superficie como en profundidad (a partir de estudios geofísicos), y (2) la adaptación del uso del suelo a su grado de afección por fenómenos kársticos y a su susceptibilidad potencial a los mismos. La geología, la geotecnia y la ingeniería desempeñan, cada una, un papel específico en la estrategia para reducir el riesgo, bien sea evitando la exposición al peligro o disminuyendo la vulnerabilidad de las construcciones.Peer reviewe

Characterization of a medium size Xe/TMA TPC instrumented with microbulk Micromegas, using low-energy gamma-rays

NEXT-MM is a general-purpose high pressure (10 bar, ~ 25 l active volume) Xenon-based TPC, read out in charge mode with an 0.8 cm × 0.8 cm-segmented 700 cm2 plane (1152 ch) of the latest microbulk-Micromegas technology. It has been recently commissioned at University of Zaragoza as part of the R&D of the NEXT 0νββ experiment, although the experiment's first stage is currently being built based on a SiPM/PMT-readout concept relying on electroluminescence. Around 2 million events were collected during the last months, stemming from the low energy γ-rays emitted by a 241Am source when interacting with the Xenon gas (Eγ = 26, 30, 59.5 keV). The localized nature of such events around atmospheric pressure, the long drift times, as well as the possibility to determine their production time from the associated α particle in coincidence, allow the extraction of primordial properties of the TPC filling gas, namely the drift velocity, diffusion and attachment coefficients. In this work we focus on the little explored combination of Xe and trimethylamine (TMA) for which, in particular, such properties are largely unknown. This gas mixture offers potential advantages over pure Xenon when aimed at Rare Event Searches, mainly due to its Penning characteristics, wave-length shifting properties and reduced diffusion, and it is being actively investigated by our collaboration. The chamber is currently operated at 2.7 bar, as an intermediate step towards the envisaged 10 bar. We report here its performance as well as a first implementation of the calibration procedures that have allowed the extension of the previously reported energy resolution to the whole readout plane (10.6% FWHM@30 keV)

A922 Sequential measurement of 1 hour creatinine clearance (1-CRCL) in critically ill patients at risk of acute kidney injury (AKI)

Meeting abstrac

Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic

This study aimed to describe the change in surgical practice and the impact of SARS-CoV-2 on mortality after surgical resection of colorectal cancer during the initial phases of the SARS-CoV-2 pandemic

The Mesolithic-Neolithic transition in southern Iberia

New data and a review of historiographic information from Neolithic sites of the Malaga and Algarve coasts (southern Iberian Peninsula) and from the Maghreb (North Africa) reveal the existence of a Neolithic settlement at least from 7.5 cal ka BP. The agricultural and pastoralist food producing economy of that population rapidly replaced the coastal economies of the Mesolithic populations. The timing of this population and economic turnover coincided with major changes in the continental and marine ecosystems, including upwelling intensity, sea-level changes and increased aridity in the Sahara and along the Iberian coast. These changes likely impacted the subsistence strategies of the Mesolithic populations along the Iberian seascapes and resulted in abandonments manifested as sedimentary hiatuses in some areas during the Mesolithic-Neolithic transition. The rapid expansion and area of dispersal of the early Neolithic traits suggest the use of marine technology. Different evidences for a Maghrebian origin for the first colonists have been summarized. The recognition of an early North-African Neolithic influence in Southern Iberia and the Maghreb is vital for understanding the appearance and development of the Neolithic in Western Europe. Our review suggests links between climate change, resource allocation, and population turnover. (C) 2011 University of Washington. Published by Elsevier Inc. All rights reserved.Fundacao para a Ciencia e a Tecnologia (Portugal); European Science Foundation [PTDC/HAH/64548/2006]; European Union; Fundacao para a Ciencia e Tecnologia; Ministerio de Ciencia e Innovacion, Spain [HAR 2008-1920, CGL2009-07603, CTM2009-07715, CSD2006-00041, HAR2008-06477-C03-03/HIST]; European Research Council [2008-AdG 230561]; MARM [200800050084447]; Project RNM [05212]; Junta de Andalucia, Spain [0179]; FCT [SFRH/BPD/26525/2006]; CSIC "JAE-Doc"info:eu-repo/semantics/publishedVersio

Dietary α‐Linolenic Acid, Marine ω‐3 Fatty Acids, and Mortality in a Population With High Fish Consumption: Findings From the PREvención con DIeta MEDiterránea (PREDIMED) Study

Background: Epidemiological evidence suggests a cardioprotective role of α‐linolenic acid (ALA), a plant‐derived ω‐3 fatty acid. It is unclear whether ALA is beneficial in a background of high marine ω‐3 fatty acids (long‐chain n‐3 polyunsaturated fatty acids) intake. In persons at high cardiovascular risk from Spain, a country in which fish consumption is customarily high, we investigated whether meeting the International Society for the Study of Fatty Acids and Lipids recommendation for dietary ALA (0.7% of total energy) at baseline was related to all‐cause and cardiovascular disease mortality. We also examined the effect of meeting the society's recommendation for long‐chain n‐3 polyunsaturated fatty acids (≥500 mg/day). Methods and Results: We longitudinally evaluated 7202 participants in the PREvención con DIeta MEDiterránea (PREDIMED) trial. Multivariable‐adjusted Cox regression models were fitted to estimate hazard ratios. ALA intake correlated to walnut consumption (r=0.94). During a 5.9‐y follow‐up, 431 deaths occurred (104 cardiovascular disease, 55 coronary heart disease, 32 sudden cardiac death, 25 stroke). The hazard ratios for meeting ALA recommendation (n=1615, 22.4%) were 0.72 (95% CI 0.56–0.92) for all‐cause mortality and 0.95 (95% CI 0.58–1.57) for fatal cardiovascular disease. The hazard ratios for meeting the recommendation for long‐chain n‐3 polyunsaturated fatty acids (n=5452, 75.7%) were 0.84 (95% CI 0.67–1.05) for all‐cause mortality, 0.61 (95% CI 0.39–0.96) for fatal cardiovascular disease, 0.54 (95% CI 0.29–0.99) for fatal coronary heart disease, and 0.49 (95% CI 0.22–1.01) for sudden cardiac death. The highest reduction in all‐cause mortality occurred in participants meeting both recommendations (hazard ratio 0.63 [95% CI 0.45–0.87]). Conclusions: In participants without prior cardiovascular disease and high fish consumption, dietary ALA, supplied mainly by walnuts and olive oil, relates inversely to all‐cause mortality, whereas protection from cardiac mortality is limited to fish‐derived long‐chain n‐3 polyunsaturated fatty acids. Clinical Trial Registration URL: http://www.Controlled-trials.com/. Unique identifier: ISRCTN35739639

The Neogene compressional stress field in the NE Iberian Peninsula

The Neogene stress field in the northeastern Iberian Peninsula is reconstructed from the analysis of brittle mesostructures (stylolytes, tension gashes, fault populations and joints). Compression directions obtained show three maxima: N-S to NNE, NW-SE and NE-SW. Stress trajectories can be interpreted according to two hypothesis: 1) An only primary stress field, with deflections due to the movement of large faults; however, some of the deflected trajectories and swapping of stress axes are anomalous and cannot be explained by classical models. 2) Two primary stress fields resulting from succesive convergence in the northern and southern margins of the Iberian plate. The N-S to NNE, «Pyrenean», compression is deflected in the Iberian Chain to NE and E-W directions. The NNW stress field, transmitted from the southern margin of the plate is more homogeneous. Both stress fields, NNE and NNW would alternate, or superimpose during the Neogene: regional deformation in the Iberian Chain agrees with a NNW compression late with respect to the Pyrenean NNE shortenin

A vision-based system for on-board identification and estimation of discarded bio-mass: A tool for contributing to marine resources sustainability

In marine harvesting, fish waste due to the discards of non-targeted species represent a risk for the sustainability of fisheries, a loss of potentially valuable living resources and a threat for the ecological equilibrium. The project FAROS aims to develop and implement an efficient, integral management network for discards, to reduce global impact of this established practice, while putting in value and optimising the use of the by-catch. The development of an on-ship automated system for discards evaluation and species biomass estimation is proposed in this contribution. The Biomass Estimation Optical System (BEOS) integrates machine vision technologies and optical information processing and feature extraction by means of nonlinear modeling based on artificial neural networks. A first functional prototype and a methodology for system implementation and operation are presented here.LIFE+ Program of the European Union (FAROS Project – LIFE08 ENV/E/000119).Peer reviewe

A vision-based system for on-board identification and estimation of discarded bio-mass: A tool for contributing to marine resources sustainability

In marine harvesting, fish waste due to the discards of non-targeted species represent a risk for the sustainability of fisheries, a loss of potentially valuable living resources and a threat for the ecological equilibrium. The project FAROS aims to develop and implement an efficient, integral management network for discards, to reduce global impact of this established practice, while putting in value and optimising the use of the by-catch. The development of an on-ship automated system for discards evaluation and species biomass estimation is proposed in this contribution. The Biomass Estimation Optical System (BEOS) integrates machine vision technologies and optical information processing and feature extraction by means of nonlinear modeling based on artificial neural networks. A first functional prototype and a methodology for system implementation and operation are presented here.LIFE+ Program of the European Union (FAROS Project – LIFE08 ENV/E/000119).Peer reviewe