El arte rupestre de Laguna Miramar, Chiapas. Estilos y temporalidades

This article analyses rock art at Lake Miramar, Ocosingo, Chiapas, and compares it to similar manifestations in the region in an attempt to perfect a typology based on styles and pigments. Paintings and rock carvings were documented using photographs, DStrech software, and drawings. We propose linking patterns in style and pigments, near bodies of water, to Late Preclassic, Postclassic, and Historic/Colonial periods. We also outline and discuss the research on rock art in Chiapas and especially in the Lacandon Jungle. The proposed outline brings together various descriptive studies in order to interpret factors such as religion, landscape, and pilgrimage.En este trabajo se analiza el arte rupestre de la Laguna Miramar, ubicada en el municipio de Ocosingo, Chiapas, y se compara con manifestaciones similares en el área con el fin de refinar una tipología regional de estilos y pigmentos. El registro detallado de las pinturas y petrograbados se hizo con fotografía, DStrech y dibujo. Se propone asociar estilos y pinturas cercanos a cuerpos de agua a los periodos Preclásico Tardío, Postclásico e Histórico/Colonial. Igualmente se revisan los trabajos sobre arte rupestre en Chiapas, y particularmente en la Selva Lacandona. El esquema propuesto articula el estudio descriptivo para realizar interpretaciones respecto a temas como religión, paisaje y peregrinaciones

Análisis multidisciplinar del fenómeno sismo-volcánico de El Hierro (julio 2011)

La erupción volcánica submarina de La Restinga (10 de octubre) ha permitido, por primera vez, poner en marcha el Plan Especial de Protección Civil y Atención de Emergencias por Riesgo Volcánico en la Comunidad Autónoma de Canarias. En este proyecto se ha realizado un análisis multidisciplinar de los principales elementos que han estado involucrados en la gestión de la crisis y sus repercusiones sociales, económicas y ambientales. Los resultados indican que, hoy en día, se cuenta con los medios necesarios para realizar la detección temprana y el seguimiento de procesos similares que tengan lugar en el Archipiélago pero, no obstante, sería necesario actualizar el presente Plan PEVOLCA, debido a las deficiencias detectadas. Estas deficiencias, además de afectar a la gestión del fenómeno sismo-volcánico, han provocado que se tomasen medidas de protección civil que han generado grandes repercusiones sociales y económicas en la Isla. Respecto a las consecuencias ambientales en la Reserva Marina de Punta La Restinga-Mar de Las Calmas se prevé una recuperación a corto plazo, siempre que se apliquen las medidas necesarias.L'erupció volcànica submarina de La Restinga (10 d'octubre) ha permès, per primera vegada, engegar el Pla Especial de Protecció Civil i Atenció d'Emergències per Risc Volcànic en la Comunitat Autònoma de Canàries. En aquest projecte s'ha realitzat una anàlisi multidisciplinària dels principals elements que han estat involucrats en la gestió de la crisi i les seves repercussions socials, econòmiques i ambientals. Els resultats indiquen que, avui dia, es compta amb els mitjans necessaris per realitzar la detecció primerenca i el seguiment de processos similars que tinguin lloc en l'Arxipèlag però, no obstant això, seria necessari actualitzar el present Pla PEVOLCA, a causa de les deficiències detectades. Aquestes deficiències, a més d'afectar a la gestió del fenomen sisme-volcànic, han provocat que es prenguessin mesures de protecció civil que han generat grans repercussions socials i econòmiques a la Illa. Respecte a les conseqüències ambientals en la Reserva Marina de Punta La Restinga-Mar de Las Calmas es preveu una recuperació a curt termini, sempre que s'apliquin les mesures necessàries.The volcanic submarine eruption of "La Restinga" (October 10th) has allowed, for the first time, to start the Special Plan of Civil Protection and Emergency care for Volcanic Risk in the Canary Community. In this project there has been realized a multidisciplinary analysis of the main elements that have been involved in the crisis management and his social, economic and environmental repercussions. The results indicate that, nowadays, they possess the necessary resources to realize an early detection and the follow-up of similar processes that take place in the Canary Islands but, nevertheless, it would be necessary to update the "Plan PEVOLCA", due to detected deficiencies. These deficiencies, concerned the management of the phenomenon volcanic earthquake, and provoked that were taking measurements of civil protection that have generated big social and economic repercussions in the Island. With regard to the environmental consequences in the Marine Reservation of "Punta La Restinga-Mar de Las Calmas" foresees a short-term recovery, always applying the necessary measures

Quantitative determination of spring water quality parameters via electronic tongue

[EN] The use of a voltammetric electronic tongue for the quantitative analysis of quality parameters in spring water is proposed here. The electronic voltammetric tongue consisted of a set of four noble electrodes (iridium, rhodium, platinum, and gold) housed inside a stainless steel cylinder. These noble metals have a high durability and are not demanding for maintenance, features required for the development of future automated equipment. A pulse voltammetry study was conducted in 83 spring water samples to determine concentrations of nitrate (range: 6.9-115 mg/L), sulfate (32-472 mg/L), fluoride (0.08-0.26 mg/L), chloride (17-190 mg/L), and sodium (11-94 mg/L) as well as pH (7.3-7.8). These parameters were also determined by routine analytical methods in spring water samples. A partial least squares (PLS) analysis was run to obtain a model to predict these parameter. Orthogonal signal correction (OSC) was applied in the preprocessing step. Calibration (67%) and validation (33%) sets were selected randomly. The electronic tongue showed good predictive power to determine the concentrations of nitrate, sulfate, chloride, and sodium as well as pH and displayed a lower R-2 and slope in the validation set for fluoride. Nitrate and fluoride concentrations were estimated with errors lower than 15%, whereas chloride, sulfate, and sodium concentrations as well as pH were estimated with errors below 10%.The authors gratefully acknowledge the Ministerio de Economia y Competitividad and FEDER, providing funds amounting to (sic)664.525,75 for the project "Desarrollo de sistemas basados en lenguas electronicas para el control y monitorizacion del ciclo integral del agua" INNPACTO. IPT-2012-0069-310000. Moreover, the authors gratefully acknowledge the Ministerio de Economia y Competitividad and FEDER (projects MAT2015-64139-C4-1-R (MINECO/FEDER), MAT2015-64139-C4-3-R (MINECO/FEDER)), the Generalitat Valenciana (project PROMETEOII/2014/047), and CIBER-BBN (NANOPROBE project) for their financial support.Carbó-Mestre, N.; López-Carrero, J.; Garcia-Castillo, FJ.; Tormos, I.; Olivas, E.; Folch, E.; Alcañiz Fillol, M.... (2018). Quantitative determination of spring water quality parameters via electronic tongue. Sensors. 18(1):1-12. https://doi.org/10.3390/s18010040S112181Winquist, F., Olsson, J., & Eriksson, M. (2011). Multicomponent analysis of drinking water by a voltammetric electronic tongue. Analytica Chimica Acta, 683(2), 192-197. doi:10.1016/j.aca.2010.10.027Storey, M. V., van der Gaag, B., & Burns, B. P. (2011). Advances in on-line drinking water quality monitoring and early warning systems. Water Research, 45(2), 741-747. doi:10.1016/j.watres.2010.08.049Winquist, F. (2008). Voltammetric electronic tongues – basic principles and applications. Microchimica Acta, 163(1-2), 3-10. doi:10.1007/s00604-007-0929-2Garçon, L.-A., Genua, M., Hou, Y., Buhot, A., Calemczuk, R., Livache, T., … Hou, Y. (2017). A Versatile Electronic Tongue Based on Surface Plasmon Resonance Imaging and Cross-Reactive Sensor Arrays—A Mini-Review. Sensors, 17(5), 1046. doi:10.3390/s17051046Hou, Y., Genua, M., Tada Batista, D., Calemczuk, R., Buhot, A., Fornarelli, P., … Livache, T. (2012). Continuous Evolution Profiles for Electronic-Tongue-Based Analysis. Angewandte Chemie International Edition, 51(41), 10394-10398. doi:10.1002/anie.201205346Holmin, S., Spångeus, P., Krantz-Rülcker, C., & Winquist, F. (2001). Compression of electronic tongue data based on voltammetry — a comparative study. Sensors and Actuators B: Chemical, 76(1-3), 455-464. doi:10.1016/s0925-4005(01)00585-8Campos, I., Alcañiz, M., Aguado, D., Barat, R., Ferrer, J., Gil, L., … Vivancos, J.-L. (2012). A voltammetric electronic tongue as tool for water quality monitoring in wastewater treatment plants. Water Research, 46(8), 2605-2614. doi:10.1016/j.watres.2012.02.029Martı́nez-Máñez, R., Soto, J., Garcia-Breijo, E., Gil, L., Ibáñez, J., & Llobet, E. (2005). An «electronic tongue» design for the qualitative analysis of natural waters. Sensors and Actuators B: Chemical, 104(2), 302-307. doi:10.1016/j.snb.2004.05.022Garcia-Breijo, E., Atkinson, J., Gil-Sanchez, L., Masot, R., Ibañez, J., Garrigues, J., … Olguin, C. (2011). A comparison study of pattern recognition algorithms implemented on a microcontroller for use in an electronic tongue for monitoring drinking waters. Sensors and Actuators A: Physical, 172(2), 570-582. doi:10.1016/j.sna.2011.09.039Moreno, L., Merlos, A., Abramova, N., Jiménez, C., & Bratov, A. (2006). Multi-sensor array used as an «electronic tongue» for mineral water analysis. Sensors and Actuators B: Chemical, 116(1-2), 130-134. doi:10.1016/j.snb.2005.12.063Sipos, L., Kovács, Z., Sági-Kiss, V., Csiki, T., Kókai, Z., Fekete, A., & Héberger, K. (2012). Discrimination of mineral waters by electronic tongue, sensory evaluation and chemical analysis. Food Chemistry, 135(4), 2947-2953. doi:10.1016/j.foodchem.2012.06.021Braga, G. S., Paterno, L. G., & Fonseca, F. J. (2012). Performance of an electronic tongue during monitoring 2-methylisoborneol and geosmin in water samples. Sensors and Actuators B: Chemical, 171-172, 181-189. doi:10.1016/j.snb.2012.02.092Escobar, J. D., Alcaniz, M., Masot, R., Fuentes, A., Bataller, R., Soto, J., & Barat, J. M. (2013). Quantification of organic acids using voltammetric tongues. Food Chemistry, 138(2-3), 814-820. doi:10.1016/j.foodchem.2012.11.078Martínez-Bisbal, M. C., Loeff, E., Olivas, E., Carbó, N., García-Castillo, F. J., López-Carrero, J., … Soto, J. (2017). A Voltammetric Electronic Tongue for the Quantitative Analysis of Quality Parameters in Wastewater. Electroanalysis, 29(4), 1147-1153. doi:10.1002/elan.201600717Bonastre, A., Ors, R., Capella, J. V., Fabra, M. J., & Peris, M. (2005). In-line chemical analysis of wastewater: present and future trends. TrAC Trends in Analytical Chemistry, 24(2), 128-137. doi:10.1016/j.trac.2004.09.008Ivarsson, P., Johansson, M., Höjer, N.-E., Krantz-Rülcker, C., Winquist, F., & Lundström, I. (2005). Supervision of rinses in a washing machine by a voltammetric electronic tongue. Sensors and Actuators B: Chemical, 108(1-2), 851-857. doi:10.1016/j.snb.2004.12.088Garcia-Breijo, E., Peris, R. M., Pinatti, C. O., Fillol, M. A., Civera, J. I., & Prats, R. B. (2013). Low-Cost Electronic Tongue System and Its Application to Explosive Detection. IEEE Transactions on Instrumentation and Measurement, 62(2), 424-431. doi:10.1109/tim.2012.2215156Winquist, F., Wide, P., & Lundström, I. (1997). An electronic tongue based on voltammetry. Analytica Chimica Acta, 357(1-2), 21-31. doi:10.1016/s0003-2670(97)00498-4Campos, I., Sangrador, A., Bataller, R., Aguado, D., Barat, R., Soto, J., & Martínez-Máñez, R. (2014). Ammonium and Phosphate Quantification in Wastewater by Using a Voltammetric Electronic Tongue. Electroanalysis, 26(3), 588-595. doi:10.1002/elan.201300538Geladi, P., & Kowalski, B. R. (1986). Partial least-squares regression: a tutorial. Analytica Chimica Acta, 185, 1-17. doi:10.1016/0003-2670(86)80028-9Wold, S., Antti, H., Lindgren, F., & Öhman, J. (1998). Orthogonal signal correction of near-infrared spectra. Chemometrics and Intelligent Laboratory Systems, 44(1-2), 175-185. doi:10.1016/s0169-7439(98)00109-9Sjöblom, J., Svensson, O., Josefson, M., Kullberg, H., & Wold, S. (1998). An evaluation of orthogonal signal correction applied to calibration transfer of near infrared spectra. Chemometrics and Intelligent Laboratory Systems, 44(1-2), 229-244. doi:10.1016/s0169-7439(98)00112-9Rouhollahi, A., Rajabzadeh, R., & Ghasemi, J. (2006). Simultaneous determination of dopamine and ascorbic acid by linear sweep voltammetry along with chemometrics using a glassy carbon electrode. Microchimica Acta, 157(3-4), 139-147. doi:10.1007/s00604-006-0668-9Riahi, S., Ganjali, M., Moghaddam, A., Pourbasheer, E., & Norouzi, P. (2009). Development of a New Combined Chemometrics Method, Applied in the Simultaneous Voltammetric Determination of Cinnamic Acid and 3, 4-Dihydroxy Benzoic Acid. Current Analytical Chemistry, 5(1), 42-47. doi:10.2174/157341109787047925Palacios-Santander, J. M., Cubillana-Aguilera, L. M., Cocchi, M., Ulrici, A., Naranjo-Rodríguez, I., Seeber, R., & Hidalgo-Hidalgo de Cisneros, J. L. (2008). Multicomponent analysis in the wavelet domain of highly overlapped electrochemical signals: Resolution of quaternary mixtures of chlorophenols using a peg-modified Sonogel–Carbon electrode. Chemometrics and Intelligent Laboratory Systems, 91(2), 110-120. doi:10.1016/j.chemolab.2007.10.00

Experiencia inicial unicéntrica de la duodenoduodenostomía para el drenaje exocrino en el trasplante de páncreas

Trabajo presentado en el 17º Congreso de la Societat Catalana de Transplantament, celebrado en Barcelona, del 22 al 24 de marzo de 202

Digital Twining of Geophysical Extremes

The geophysical research community has developed a relatively large amount of numerical codes and scientific methodologies which are able to numerically simulate through physics the extreme behavior of the Earth systems (for example: volcanoes, tsunamis earthquakes, etc). Furthermore, nowadays, large volumes of data have been acquired and, even near real-time data streams are accessible. Therefore, Earth scientist currently have on their hands the possibility of monitoring these events through sophisticated approaches using the current leading edge computational capabilities provided by pre-exascale computing infrastructures. The implementation and deployments of 12 Digital Twin Components (DTCs), addressing different aspects of geophysical extreme events is being carried out by DT-GEO, a project funded under the Horizon Europe programme (2022-2025). Each DTC is intended as self-contained entity embedding flagship simulation codes, Artificial Intelligence layers, large volumes of (real-time) data streams from and into data-lakes, data assimilation methodologies, and overarching workflows which will are executed independently or coupled DTCs in a centralized HPC and/or virtual cloud computing research infrastructure

Endothelial glycocalyx shedding in patients undergoing pancreas transplantation

Trabajo presentado en el 12th EPITA Symposium - 41st AIDPIT Workshop, celebrado en Austria, del 22 al 24 de enero de 2023Background: The vascular endothelium is critically involved in many steps of tissue damage originating during ischemia-reperfusion (IR) in human transplantation. An endothelial surface layer, the glycocalyx, forms the primary interface between the blood and the healthy endothelium and its shedding is recognized as a cornerstone in IR-related endothelial dysfunction. We investigated the role of endothelial glycocalyx breakdown products in patients undergoing pancreas transplantation. Methods: Endothelial integrity and remodelling products were measured in plasma from 26 simultaneous reno-pancreas transplants and 2 re-transplants recipients. The levels of syndecan-1, hyaluronan, heparan sulfate and Vascular Endothelial Growth Factor (VEGF) were determined using enzyme-linked immunosorbent assay at different time points: before surgery, 10 minutes and 24 hours after reperfusion, and at patient discharge. Results: Transplant recipients had greater evidence of glycocalyx damage 10 min. after reperfusion of the graft as compared before surgery, measured by plasma levels of syndecan-1 (66.54 vs 155ng/mL; p<0.0001) and heparan sulfate (4.96 vs 6.07 ng/mL, p=0.0435) components. However, plasma hyaluronan levels remained unchanged throughout. The levels of VEGF significantly decreased in plasma 10 min. after graft reperfusion (117 vs 18 pg/mL; p<0.0001). No correlation existed between endothelial markers except for syndecan-1 with VEGF and heparan sulfate at this time point, respectively (r=0.395, p=0.0371; r=0.572, p=0.001). Regression analysis showed that the higher levels of syndecan-1 were more frequent in patients with acute rejection (p=0.011), intestinal complications (p=0.045) and those who developed kidney surgical complications (p=0.026) or needed for a urological reintervention (p=0.024). Graft pancreatitis and pancreatic fistulas were associated with the levels of hyaluronan at 24h post-reperfusion (p=0.04; p=0.04, respectively) and at patient discharge (p=0.012; p=0.012, respectively). Conclusions: This study provides the first evidence for endothelial glycocalyx damage in pancreas transplantation. Further studies are needed to validate these findings in a larger sample size

A digital twin for geophysical extremes: interim results from the DT-GEO project

The DT-GEO project (2022-2025), funded under the Horizon Europe topic call INFRA-2021-TECH-01-01, is implementing an interdisciplinary digital twin for modelling and simulating geophysical extremes at the service of research infrastructures and related communities. The digital twin consists of interrelated Digital Twin Components (DTCs) dealing with geohazards from earthquakes to volcanoes to tsunamis and that harness world-class computational (FENIX, EuroHPC) and data (EPOS) Research Infrastructures, operational monitoring networks, and leading-edge research and academic partnerships in various fields of geophysics. The project is merging and assembling latest developments from other European projects and EuroHPC Centers of Excellence to deploy 12 DTCs, intended as self-contained containerised entities embedding flagship simulation codes, artificial intelligence layers, large volumes of (real-time) data streams from and into data-lakes, data assimilation methodologies, and overarching workflows for deployment and execution of single or coupled DTCs in centralised HPC and virtual cloud computing Research Infrastructures (RIs). Each DTC addresses specific scientific questions and circumvents technical challenges related to hazard assessment, early warning, forecasts, urgent computing, or geo-resource prospection. This presentation summarises the results form the first year of the project including the digital twin architecture and the (meta)data structures enabling (semi-)automatic discovery, contextualisation, and orchestration of software (services) and data assets. This is a preliminary step before verifying the DTCs at 13 Site Demonstrators and starts a long-term community effort towards a twin on Geophysical Extremes integrated in the Destination Earth (DestinE) initiative

Validation of Backtable Graft Arterial Anastomosis Between Splenic Artery and Superior Mesenteric Artery: A 21-year Single-center Experience of Pancreas Transplantation

Resumen del trabajo presentado en el IPITA 2021 VIRTUAL CONGRESS, celebrado de forma virtual del 20 al 23 de octubre de 2021Aim: To determine the role of the arterial spleno-mesenteric anastomosis reconstruction technique compared to other types of backtable arterial anastomosis, in terms of vascular complications and long-term patient and graft survival in a single institution. Methods: Retrospective analysis including all pancreas transplants performed over 21 years (1999–2019). For the bench reconstruction: (1) the distal superior mesenteric artery (SMA) was distally dissected and sewn to the splenic artery (SA), or (2) the arteries were reconstructed with an iliac arterial “Y” graft. Results: A total of 412 pancreas transplantations were done. At the bench procedure SMA/SA anastomosis was performed in 376 of patients, arterial iliac “Y” graft in 32 of patients, and no arterial reconstruction was required in 4 of patients. A total of 90 patients presented vascular complications within the 30 days following transplant: (venous (n=64), arterial (n=11), both (n=15), without statistically significant differences between the SMA/SA anastomosis group and others. Regarding acute arterial events:(1) for the SMA/SA anastomosis group, a total of 24 patients presented with thrombosis (n=16), stenosis (n=5), pseudoaneurysm (n=2); (2) for the iliac “Y” graft group, there were 3 patients with thrombosis. Focusing on chronic arterial events:(1)for the SMA/SA anastomosis group, a total of 2 patients presented with chronic thrombosis, 2 with pseudoaneurysm, 2 with arterioenteral fistula and one with arteriovenous fistula;(2)for the iliac “Y” graft group, and one patient with arterioenteral fistula. After a median follow-up of 129.2 [77.2–182] months, no statically differences were found between SMA/SA anastomosis and iliac “Y” graft arterial reconstruction groups at 1, 3, 5 and 10 years in terms of patient and graft survival. Conclusions: The back table procedure used in our institution (SMA/SA) is an easy, effective and safe surgical technique that can be used as the first option for arterial reconstruction or as a good alternative for surgeons to the widely used arterial “Y” graft.Peer reviewe