Search results for "PELE"
showing 10 items of 139 documents
A stalactite record of four relative sea-level highstands during the Middle Pleistocene Transition
2017
International audience; Ice-sheet and sea-level fluctuations during the Early and Middle Pleistocene are as yet poorly understood. A stalactite from a karst cave in North West Sicily (Italy) provides the first evidence of four marine inundations that correspond to relative sea-level highstands at the time of the Middle Pleistocene Transition. The speleothem is located ∼97 m above mean sea level as result of Quaternary uplift. Its section reveals three marine hiatuses and a coral overgrowth that fixes the age of final marine ingression at 1.124 ± 0.2, thus making this speleothem the oldest stalactite with marine hiatuses ever studied to date. Scleractinian coral species witness light-limited…
A comparison of different methods for speleothem age modelling
2012
Abstract Speleothems, such as stalagmites and flowstones, can be dated with unprecedented precision in the range of the last 650,000 a by the 230Th/U-method, which is considered as one of their major advantages as climate archives. However, a standard approach for the construction of speleothem age models and the estimation of the corresponding uncertainty has not been established yet. Here we apply five age modelling approaches ( StalAge , OxCal, a finite positive growth rate model and two spline-based models) to a synthetic speleothem growth model and two natural samples. All data sets contain problematic features such as outliers, age inversions, large and abrupt changes in growth rate a…
Meaning in life among adolescents: Factorial invariance of the Purpose in Life Test and buffering effect on the relationship between emotional dysreg…
2019
Objective: The purpose of the present study was threefold: first, to analyse the psychometric properties of a 10‐item Spanish version of the Purpose in Life Test, which assesses meaning in life (MiL), in a sample of community adolescents; second, to analyse the differences between the age and gender groups; and third, to analyse whether MiL buffers the relationship between emotional dysregulation and hopelessness. Method: Participants were 1,599 adolescents from 12 to 19 years old, M = 15.69, SD = 2.14. The Purpose in Life Test‐10 Items, the Beck Hopelessness Scale, and the Difficulties in Emotional Regulation Scale were used. Results: A nine‐item version showed good fit, psychometric prope…
Flank Margin Caves In Telogenetic Limestones In Italy
2017
Almost 20% of Italy is characterized by the outcropping of carbonate massifs ranging in age from Cambrian to Quaternary. Coastal karst is present in many Italian regions: from North-East to South and West: the Gulf of Trieste, the Conero (South of Ancona, Marche), the Adriatic coast of Apulia including Gargano, Murge and Salento, Maratea in Basilicata, Cilento in Campania, Circeo and Gaeta in Latium, Argentario and Giannutri Island in Tuscany, the southernmost part of the Ligurian Alps, Palermo Mts., San Vito Lo Capo, Syracuse coast and Marettimo Island in Sicily, and, especially, in Sardinia, which has carbonate rocks touching the sea along the coast of Balai near Porto Torres, Capo Caccia…
Hopelessness and burnout in Italian healthcare workers during COVID-19 pandemic: the mediating role of trait emotional intelligence
2023
Objective: The study aims to assess the impact of COVID-19 on healthcare workers’ work-related stress during the first wave of the pandemic in Italy. The main objective is to investigate the existence of a positive correlation between hopelessness and burnout, assuming that burnout may be a riskfactor for the development of hopelessness, and to analyze the role thattrait Emotional Intelligence (TEI) and changes in workload could have in this relationship. Furthermore, evaluate any significant differences in burnoutand hopelessness levels in the function of some demographic variables, such as gender, professional profiles, and different working zones of Italy, tobetter understand how the di…
Rodolfo Walsh en 'ese hombre': un escritor a diario, su memoria en los papeles
2013
Resumen: Este articulo integra dos tipos de lectura critica de Ese hombre y otros papeles personales (Buenos Aires, 1996 y 2007), de Rodolfo Walsh, con edicion a cargo de Daniel Link. Considerando, primero, el diario del escritor que incluye, el libro describe, dentro del pathos caracteristico del genero, las imposibilidades y los fracasos de la escritura, que especifican historicamente los problemas de la relacion entre literatura y politica, propios del campo argentino de los anos ’60-’70. Las tensiones de la escritura y la vida, agudizadas cuando apremia la militancia, y expresadas en las disyuntivas de genero –basicamente, novela vs. testimonio- constituyen, en esa linea, un eje crucia…
Vidējās cerebrālās artērijas oklūzijas ietekme uz peļu mitohondriju funkcionalitāti
2021
Mitohondriji ir atbildīgi par šūnu enerģijas ražošanu oksidatīvās fosforilācijas ceļā. Išēmisks insults izsauc patoloģiskas izmaiņas šūnu funkcionēšanā, it īpaši šūnu organellu darbībā, tai skaitā mitohondriju. Pētījuma mērķis bija izpētīt išēmijas un asinsrites reperfūzijas ietekmi uz insulta skarto un neskarto smadzeņu pusložu mitohondriju funkcijām, veicot filamenta inducētu vidējās cerebrālās artērijas oklūziju pelēm. Iegūtie rezultāti parāda, ka vislielākā atšķirība skābekļa patēriņā starp insulta skarto un neskarto puslodēm un visaugstākā ROS izdalīšanās ir novērojamas uzreiz pēc oklūzijas, bet visbūtiskākais samazinājums mitohondriālā elpošanā novērojams 2 stundas pēc reperfūzijas in…
Evaporite karst in Italy: A review
2017
none 16 si Although outcropping rarely in Italy, evaporite (gypsum and anhydrite) karst has been described in detail since the early 20th century. Gypsum caves are now known from almost all Italian regions, but are mainly localised along the northern border of the Apennine chain (Emilia Romagna and Marche), Calabria, and Sicily, where the major outcrops occur. Recently, important caves have also been discovered in the underground gypsum mines in Piedmont. During the late 80s and 90s several multidisciplinary studies were carried out in many gypsum areas, resulting in a comprehensive overview, promoting further research in these special karst regions. More recent and detailed studies focused…
Speleothem δ13C record suggests enhanced spring/summer drought in south-eastern Spain between 9.7 and 7.8 ka – A circum-Western Mediterranean anomaly?
2019
South-eastern Spain is one of the driest regions in Europe and thus, prone to drought. Terrestrial climate records covering the late Glacial and Holocene from this area are sparse. Here, we present a flowstone record from Cueva Victoria, south-eastern Spain, which covers the late Glacial (15 ka) to the mid-Holocene (7 ka) including the Younger Dryas (YD). Between the onset of the Bølling/Allerød (B/A) and the early Holocene, flowstone δ18O values progressively decrease in accordance with sea-surface temperatures in the Alboran Sea, indicating an increase in precipitation in south-eastern Spain and a supra-regional signal of North Atlantic temperature change. At the same time, decreasing δ13…
Hypogenic caves of Sicily (Southern Italy)
2013
First results of a study on hypogenic caves in Sicily are presented. Inactive water-table sulphuric acid caves and 3D maze caves linked to rising of thermal waters rich in H2S were recognized. Cave patterns are guided by structural planes, medium and small scale morphological features are due mainly to condensation-corrosion processes. Calcite and gypsum represent the most common cave minerals. Different types of phosphates linked to the presence of large bat guano deposits were analyzed.