Meteorological conditions for the triggering of landslides in Asturias (NW Spain): a preliminary analysis of synoptic patterns

Póster presentado en: EGU General Assembly celebrada del 23 al 28 de abril de 2017 en Viena, Austria

Self-gravitating barotropic equilibrium configurations of rotating bodies with SPH

We present a novel relaxation method to build three-dimensional rotating structures of barotropic bodies using the SPH technique. The method is able to relax gaseous structures in rigid as well as differential rotation. The relaxation procedure strongly relies on the excellent conservation of angular momentum that characterizes the SPH technique. The method has been successfully applied to a variety of zero-temperature white dwarfs and polytropic self-gravitating structures. Our SPH results have been validated by comparing the main features (energies, central densities and the polar to equatorial radius ratio) to those obtained with independent, albeit grid-based methods, as for example, the self-consistent field method, showing that both methods agree within few percents.Comment: 12 pages, 6 figures, 4 Tables, accepted for publication in Astronomy and Astrophysic

Effects of the substituents of pyrazole/thiazine ligands on the magnetic properties of chloro-bridged Cu(II) complexes

[Abstract] We have synthesised and characterised the dimeric copper(II) complexes [{CuCl(PzTz)}2(μ-Cl)2], [{CuCl(DMPzTz)}2(μ-Cl)2] and [{CuCl(DPhPzTz)}2(μ-Cl)2] and the monomeric complex [CuCl2(DMPzTz)] (PzTz = 2-(1-pyrazolyl)-1,3-thiazine, DMPzTz = 2-(3,5-dimethyl-1-pyrazolyl)-1,3-thiazine and DPhPzTz = 2-(3,5-diphenyl-1-pyrazolyl)-1,3-thiazine). Single crystal X-ray diffraction studies show that the geometry around the copper(II) center in the dimeric units is a distorted squared pyramid, while the monomeric compound presents a distorted squared planar coordination. The electronic and magnetic properties of complexes are discussed on the basis of their X-ray structures and EPR spectral studies combined with DFT calculations. Magnetostructural comparisons with structurally similar copper(II) complexes are also carried out. DFT calculations indicate that the dinuclear species are more stable than the mononuclear ones, although the inclusion of methyl or phenyl substituents provokes an important stabilization of the mononuclear forms. DFT calculations fail to predict the sign of the magnetic coupling constants of the complexes whereas multiconfigurational methods, CASSCF/NEVPT2 calculations, predict the correct sign of the exchange coupling constant.Junta de Extremadura; GR15147Ministerio de Economía y Competitividad; CTQ2015-71211-RED

Meteorological patterns linked to landslide triggering in asturias (NW Spain): A preliminary analysis

Asturias is one of the most landslide prone areas in the north of Spain. Most landslides are linked to intense and continue rainfall events, especially between October and May. This fact points out precipitation as the main triggering factor in the study area. Thirteen rainfall episodes that caused 1064 landslides between 2008 and 2016 have been selected for its study. Landslide records come from the Principality of Asturias Landslide Database (BAPA) and meteorological data from the Spanish Meteorological Agency (AEMET). Meteorological conditions which took place during each period have been characterized by using NCEP/NCAR Reanalysis data. Four main landslide-triggering meteorological patterns have been identified for the Asturian territory: Strong Atlantic Anticyclone pattern (SAA), Atlantic Depression pattern (AD), Anticyclonic ridge pattern (AR) and Cut-off Low pattern (CL).This research is funded by the Department of Employment, Industry and Tourism of the Government of Asturias, Spain, and the European Regional Development Fund FEDER, within the framework of the research grant “GEOCANTABRICA: Procesos geológicos modeladores del relieve de la Cordillera Cantábrica” (FC-15-GRUPIN14-044), and supported on the cooperation between the Department of Geology at the University of Oviedo and the AEMET

Strategy for the optimization of risk communication in the ebola crisis

La propagación de enfermedades endémicas como el ébola en las sociedades desarrolladas ha planteado la revisión de los modos y estrategias de comunicación institucional, así como de la comunicación realizada por los medios de comunicación masiva. La experiencia obtenida en España puede ayudar a aclarar las claves del proceso de comunicación de riesgos. Tras una revisión bibliográfica y un estudio sobre la gestión comunicativa de la crisis del ébola en España, se propone un modelo de comunicación para reducir los riesgos en los trabajadores de la salud y mejorar la calidad de la información institucional. Esta investigación se enmarca dentro del Plan Nacional CSO2016-81882-REDT.The spread of endemic diseases such as Ebola in developed societies has raised the review of modes and strategies of corporate communication as well as communications of mass media. The experience obtained in Spain can help to clarify the keys of the risk communication process. After a literature review and a study about the strategies of communication in Spain during the Ebola crisis, we propose a communication model to reduce risks in health workers and to improve the quality of corporate information. This research is part of the National Plan CSO2016-81882-REDT

Clinical features and natural history of clinically non-functioning pituitary incidentalomas

ePoster presentation: pituitary and neuroendocrinologyDisclaimer: this is not the definitive version of record of this article. This manuscript has been accepted for publication in Endocrine Abstracts, but the version presented here has not yet been copy-edited, formatted or proofed. Consequently, Bioscientifica accepts no responsability for any errors or omissions it may contains. The definitive version in now freely avaliable at Endocrine Abstracts web page

High rates of protein intake are associated with an accelerated rate of decline of residual kidney function in incident peritoneal dialysis patients

[Abstract] Background Preservation of residual kidney function (RKF) is a relevant objective in peritoneal dialysis (PD) patients. The influence of dietary protein intake (PI) on this variable has not been adequately investigated. Methods Following an observational design, we studied 336 patients incident on PD, with a minimum follow-up of 6 months. The main study variable was the mean PI [normalized rate of protein nitrogen appearance (nPNA)] during the first 4 months on PD. The main outcome variables were the absolute rate of decline of RKF and the proportion of patients presenting a >50% decay of their RKF during the first year of follow-up. We applied univariate and multivariate strategies of analysis, taking into consideration the main control variables bearing a correlation with nPNA and/or RKF. Results Mean nPNA (first 4 months) was 1.23 ± 0.33 g/kg/day, while the overall rate of decline of RKF was −0.13 ± 0.29 mL/min/month; 69 patients (25.1%) had lost >50% of their initial RKF by the end of the first year. Univariate analysis disclosed consistent associations between the main study variable on one hand and baseline RKF (r = 0.32, P 50% of the baseline RKF during the first year of treatment (odds ratio 1.15 per 0.10 g/kg/day, 95% CI 1.04–1.27, P = 0.006). Conclusion Higher rates of PI during the first months of therapy are associated with a faster decline of RKF among patients incident on PD. Our results underline the convenience of keeping an adequate balance between sufficient protein ingestion, to prevent malnutrition and wasting, and sensible restriction in stable, adequately nourished individuals with rates of intake in the higher range or above-recommended allowances

Monitoring of misalignment in low speed geared shafts with acoustic emission sensors

The most common condition monitoring method applied to rotating machines is vibration measurement, although recently it has been proposed that acoustic emission (AE) offers additional advantages in early fault detection and low speed rotation systems. Capturing the AE signals is conditioned by the severe attenuation with distance and the presence of material discontinuities between source and sensor, therefore measurement device placement is more important than in traditional accelerometry. In this study AE signals are measured in gearboxes at misalignment conditions for the revision of signal characteristics from the generated signal due to the interaction of shafts, bearings and gears. For this purpose, several tests are performed using combinations of speed and varying load, considering the effect of lubricating oil temperature. Fixed measurements are taken over the bench supports, and on-board, where the sensors are rotating with the shafts. In parallel to acoustic emission a vibration analysis is done in order to contrast and analyze differences between both technologies at different operation states. Acquired data is processed to obtain statistical parameters from measurements in order to verify the values and tendencies due to transient phenomena related to changes in speed and load. AE provides better results than vibration employing the same time domain condition indicators. On the contrary, vibration recognizes clearly the fault through frequency analysis.This work has been supported by project DPI2017-85390-P funded by the Spanish Ministry of Science and Technology and RM16-XX012 PredictEA project funded by SODERCAN

An insight into transfer hydrogenation reactions catalysed by iridium(III) bis-N-heterocyclic carbenes

A variety of [M(L)2(L′)2{κC,C′-bis(NHC)}]BF4 complexes (M = Rh or Ir; L = CH3CN or wingtip group; L′ = I– or CF3COO–; NHC=N-heterocyclic carbene) have been tested as pre-catalysts for the transfer hydrogenation of ketones and imines. The conversions and TOF's obtained are closely related to the nature of the ligand system and metal centre, more strongly coordinating wingtip groups yielding more active and recyclable catalysts. Theoretical calculations at the DFT level support a classic stepwise metal-hydride pathway against the concerted Meerwein–Ponndorf–Verley (MPV) mechanism. The calculated catalytic cycle involves a series of ligand rearrangements due to the high trans effect of the carbene and hydrido ligands, which are more stable when situated in mutual cis positions. The reaction profiles obtained for the complexes featuring an iodide or a trifluoroacetate in one of the apical positions agree well with the relative activity observed for both catalysts.The authors would like to acknowledge the support by the Ministry of Higher Education, Saudi Arabia, in establishment of the Centre of Research Excellence in Petroleum Refining & Petrochemicals at KFUPM (KACST-funded project ART-32-68). The support under the KFUPM–University of Zaragoza research agreement is also highly appreciated. This work was further supported by the Spanish Ministry of Economy and Competitiveness (MINECO/FEDER) (CONSOLIDER INGENIO CSD2009-0050, CTQ2011-27593 and CTQ2012-35665 projects) and the Diputación General de Aragón (DGA/FSE-E07).Peer Reviewe

Monitoring treatment of field cancerisation with 3% diclofenac sodium 2.5% hyaluronic acid by reflectance confocal microscopy: a histologic correlation

Visual inspection may fail to accurately evaluate field cancerisation (subclinical actinic keratoses [AKs]). We aimed to describe field cancerisation by confocal reflectance microscopy and changes induced by the application of 3% diclofenac sodium gel in 2.5% hyaluronic acid. Fourteen male patients, > 50 years old, with AKs on the bald scalp were included. Clinical examination, confocal microscopy and histological study of clinically visible lesions and 'normal appearing' adjacent skin before and after treatment was completed. Reflectance confocal microscopy showed a decrease in scaling (p = 0.001) and atypia of the honeycomb pattern (p = 0.001) at 2 weeks of treatment. Changes in parakeratosis, inflammation and dermal collagen remodelling were also observed. Histology correlated with confocal features in AK and subclinical AK. Reflectance confocal microscopy was useful in the evaluation of field cancerisation and monitoring of treatment response. A rapid improvement in epidermal atypia was observed