El registro sedimentario del Cuaternario Reciente en el Lago Redó D'Aigües Tortes (Pirineos Centrales)

[Resumen] El estudio del registro sedimentario del lago Redó d'Aigües Tortes (Pirineos Centrales) permite analizar la evolución paleoambiental en los alrededores del lago desde el final del Último Ciclo Glaciar hasta la actualidad (Pleistoceno Superior-Holoceno). El relleno sedimentario se inicia alrededor de los 13500 años BP con la sedimentación de ritmitas glaciolacustres que indican la presencia de glaciares en la zona de influencia del lago hasta el inicio del Holoceno (9980 años BP). Durante el Holoceno, la sedimentación es predominantemente de tipo orgánico aunque algunas intercalaciones detríticas puedan corresponder tanto a fluctuaciones climáticas como a fenómenos de inestabilidad en las laderas que bordean el lago (deslizamientos y/o aludes).[Abstract] The study of the sedimentary record from Lake Redó d'Aigües Tortes (Central Pyrenees) allows us to recognize the paleoenvironmental evolution in the surrounding area since the end of the Last Glacial Cycle (Upper PleistoceneHolocene). The sedimentary filling begins at about 13500 years BP with the sedimentation of glaciolacustrine rhythmites showing the existence of glaciers in the cirque area up to the beginning of the Holocene (9980 years BP). During the Holocene, the prevailing organic sedimentation is interrupted by detritic levels that would correspond either to climatic fluctuations or to landslides / snow avalanches in the slopes bordering the lake

El dos de mayo

Incluye un fragmento de "Los heroes y victimas del dos de Mayo" de Juan Pérez de GuzmánCopia digital. Madrid : Ministerio de Cultura. Subdirección General de Coordinación Bibliotecaria, 200

Junts a casa! Els dies del coronavirus

Aquest llibre solidari de “L’ Agus i els monstres” és un llibre molt especial generat en un context excepcional. Es tracta d’una novel·la gràfica breu, en format digital, que és el resultat del moment actual i que té un objectiu molt senzill i molt complex alhora: oferir als nens i nenes una reflexió serena sobre la situació que estem vivint arran de la pandèmia de la COVID-19. JUNTS A CASA! Els dies del coronavirus convida els protagonistes (L’Agus, la Lídia i els monstres) i els lectors a aprendre a viure en el confinament i el desconfinament i actuar com a herois ajudant a evitar que la pandèmia segueixi avançant. En definitiva, en paraules del protagonista, l’Agus Pianola: “cadascú s’està a casa seva, però tots anem en el mateix vaixell”.Postprint (published version

What is the impact of mother's bed incline on episodes of decreased oxygen saturation in healthy newborns in skin-to-skin contact after delivery: Study protocol for a randomized controlled trial

Angle of inclination; Apparent life-threatening events; BradycardiaAngle d'inclinació; Esdeveniments que aparenten amenaçar la vida; BradicàrdiaÁngulo de inclinación; Acontecimientos que aparentan amenazar la vida; BradicardiaBACKGROUND: Early mother-child skin-to-skin contact (SSC) in the first 2 h postpartum is highly beneficial for both mother and child. However, cases have been reported of newborns who have experienced apparently life-threatening events (ALTEs) or sudden death during this procedure. The causes of these events are unknown. Newborn's prone position could influence the onset of these events but there is very little evidence to support any recommendation. We hypothesize that newborns' breathing obstruction episodes increase as mothers lie more horizontally. The main objective of this study is to compare the occurrence of desaturation and bradycardia episodes as a function of mother's bed incline. The study is designed as a randomized, controlled, assessor blind, multicenter, superiority trial with two parallel groups and 1:1 allocation ratio. METHODS: The study participants will be full-term healthy mother-newborn dyads from ten hospitals in Spain. Participants will be randomly assigned to one of two study arms defined by mother's bed inclination (45° or 15°). The planned sample size is 5866. Centralized permuted blocks randomization and assessor blinding will be implemented. The newborns will be monitored remotely with pulse oximetry, from 10 min to 2 h after delivery. We established SO2 and heart rate (HR) limit alarms, as well as an action protocol in the event of alarm activation. The primary outcome is the number of healthy newborns who undergo episodes of SO2 ≤ 90%. Secondary outcomes are the mean SO2 level, the number of newborns who experience episodes of SO2 ≤ 85%, the time to SSC discontinuation due to abnormal SO2 or HR, and episodes of HR  180 bpm. Subgroups and pooled analysis will be performed to identify if breast-feeding and mother and child positions favor the occurrence of desaturation or bradycardia episodes. DISCUSSION: A simple intervention such as modifying mother's bed angle of inclination while in SSC with her child during the first 2 h postpartum could favor newborn's hemodynamic and respiratory stabilization and thus contribute to reducing the onset of ALTEs. TRIAL REGISTRATION: ClinicalTrials.gov, NCT02585492 . Registered on 22nd October 2015. PROTOCOL VERSION: 2 (30th June 2015)

Maternal and Neonatal Prognostic Factors for Cardiorespiratory Events in Healthy Term Neonates During Early Skin-to-Skin Contact

Cardiorespiratory events; Prognostic factor; Pulse oximetryEventos cardiorrespiratorios; Factor pronóstico; Oximetría de pulsoEsdeveniments cardiorespiratoris; Factor pronòstic; Oximetria de polsBackground: During early skin-to-skin contact (ESSC), alterations in peripheral oxygen saturation (SpO2) and heart rate (HR) have been frequently observed. Objectives: This study aimed to determine the incidence of cardiorespiratory events (CREs) during ESSC in healthy term newborns (HTNs) and estimate the association of maternal and neonatal prognostic factors with the risk of CREs. Methods: A pooled analysis of the cohort from a clinical trial involving healthy mother–child dyads during ESSC was performed. Pulse oximetry was employed to continuously monitor SpO2 and HR within 2 h after birth. The individual and combined prognostic relevance of the demographic and clinical characteristics of dyads for the occurrence of a CRE (SpO2 180 bpm) was analyzed through logistic regression models. Results: Of the 254 children assessed, 169 [66.5%; 95% confidence interval (95% CI), 60.5–72.5%] had at least one CRE. The characteristics that increased the risk of CRE were maternal age ≥35 years (odds ratio, 2.21; 95% CI, 1.19–4.09), primiparity (1.96; 1.03–3.72), gestational body mass index (BMI) >25 kg/m2 (1.92; 1.05–3.53), and birth time between 09:00 p.m. and 08:59 a.m. (2.47; 1.02–5.97). Conclusion: CREs were more frequent in HTNs born during nighttime and in HTNs born to first-time mothers, mothers ≥35 years, and mothers with a gestational BMI >25 kg/m2. These predictor variables can be determined during childbirth. Identification of neonates at higher risk of developing CREs would allow for closer surveillance during ESSC

Aproximación probabilística al número y tamaño de bloques en desprendimientos con fragmentación

La mayoría de las masas rocosas que se desprenden se fragmentan en los primeros impactos contra el terreno. El riesgo asociado a los desprendimientos debe calcularse, por lo tanto, teniendo en cuenta este proceso de fragmentación. Para incorporar la fragmentación en la simulación de trayectorias es necesario prever el número y el volumen de los fragmentos rocosos resultantes en cada desprendimiento. Se presenta aquí un método para estimar estas dos variables. Se parte de la hipótesis que la distribución del volumen de los bloques acumulados en el canchal puede ser utilizada para generar aleatoriamente conjuntos de bloques, cada uno de ellos simulando el conjunto de bloques resultantes de un desprendimiento. Esta aproximación se ha aplicado a un canchal del Solà d’Andorra, Andorra la Vella (Principado de Andorra). La validez del método se ha contrastado comparado los resultados obtenidos con lo observado en desprendimientos recientes, inventariados por un plan de vigilancia de la zona.Postprint (published version

Moraine crest or slope: An analysis of the effects of boulder position on cosmogenic exposure age

Terrestrial cosmogenic nuclide dating of ice-marginal moraines can provide unique insights into Quaternary glacial history. However, pre- and post-depositional exposure histories of moraine boulders can introduce geologic uncertainty to numerical landform ages. To avoid geologic outliers, boulders are typically selected based on their depositional context and individual characteristics but while these criteria have good qualitative reasoning, many have not been tested quantitatively. Of these, boulder location is critical, as boulders located on moraine crests are prioritised, while those on moraine slopes are typically rejected. This study provides the first quantitative assessment of the relative utility of moraine crest and moraine slope sampling using new and published 10Be and 36Cl ages (n = 19) and Schmidt hammer sampling (SH; n = 635 moraine boulders, ∼19,050 SH R-values) in the northern and southern Pyrenees. These data show that for many of the studied moraines, the spatial distribution of “good” boulders is effectively random, with no consistent clustering on moraine crests, ice-proximal or -distal slopes. In turn, and in contrast to prior work, there is no clear penalty to either moraine crest or moraine slope sampling. Instead, we argue that landform stability exerts a greater influence on exposure age distributions than the characteristics of individual boulders. For the studied landforms, post-depositional stability is strongly influenced by sedimentology, with prolonged degradation of matrix-rich unconsolidated moraines while boulder-rich, matrix-poor moraines stabilised rapidly after deposition. While this pattern is unlikely to hold true in all settings, these data indicate that differences between landforms can be more significant than differences at the intra-landform scale. As ad hoc assessment of landform stability is extremely challenging based on geomorphological evidence alone, preliminary SH sampling, as utilised here, is a useful method to assess the temporal distribution of boulder exposure ages and to prioritise individual boulders for subsequent analysis

Towards a new quality-controlled daily climate dataset for the Pyrenees, 1950-2015

Póster presentado en: EMS Annual Meeting: European Conference for Applied Meteorology and Climatology celebrado del 4 al 8 de septiembre de 2017 en Dublin, IrlandaPrevious works using lower-density datasets addressed warming rates with slight differences depending on the season and diffuse trends for precipitation. New and more accurate results in spatio-temporal variations of these climate variables are expected on behalf the development of the CLIM’PY project, which aims to: i) detect past trends with instrumental data and, ii) estimate future behaviours in climatic variables based on projected scenarios. Temperature, precipitation and snow cover in the Pyrenees will be analysed within the framework of the project. In this communication, we present the methodology we will follow to conduct the quality control analysis of daily temperature and precipitation, which will include 673 stations of Spain, France and Andorra, covering the period 1950-2015

New daily quality-controlled data base for the Pyrenees (1950-2015)

Presentación realizada para el: EMS Annual Meeting - European Conference for Applied Meteorology and Climatology 2018, celebrado en Budapest del 3 al 7 de septiembre de 2018