23 research outputs found
On line Bayes Estimation of Capacity Fading for Battery Lifetime Assessment
No full textThis study is devoted to a proper modeling and estimation method of battery capacity fading under the widely adopted exponential decay model, in view of an efficient lifetime assessment of battery. The method is based upon recursive online Bayes estimation of capacity fading. It is also shown how a degradation-based modeling of battery reliability can be adopted, leading to a Bernstein lifetime distribution. The performances of the proposed method are successfully evaluated by means of extensive Monte Carlo simulations based upon available literature and experimental data. A brief account is also given of a robustness analysis of the proposed methodology with respect to departures from the assumption of Gaussian noise
On line Bayes Estimation of Capacity Fading for Battery Lifetime Assessment
No full textThis study is devoted to a proper modeling and estimation method of battery capacity fading under the widely adopted exponential decay model, in view of an efficient lifetime assessment of battery. The method is based upon recursive online Bayes estimation of capacity fading. It is also shown how a degradation-based modeling of battery reliability can be adopted, leading to a Bernstein lifetime distribution. The performances of the proposed method are successfully evaluated by means of extensive Monte Carlo simulations based upon available literature and experimental data. A brief account is also given of a robustness analysis of the proposed methodology with respect to departures from the assumption of Gaussian noise
QUaternary fault strain INdicators database: QUIN 1.0 - first release from the Apennines of central Italy
No full textThis database relates to the paper “QUaternary fault strain INdicators database - QUIN 1.0 - first release from the Apennines of central Italy”.
It provides very local-scale geometric and kinematic data on Fault Striation Pairs (FSP, the fault plane and the slickenline measured on it) surveyed along the Quaternary (last 2.5 My) extensional intra-Apennine belt of central Italy. The sampled area develops for an along-strike extent of ~550 km and in an average NW-SE direction.
The first release of the “QUaternary fault strain INdicator” database (acronym QUIN) consists of a comprehensive compilation of both unpublished (1315) and published (2026) FSPs, for a total of 3339 records. Overall, considering the ~60,100 numerical data released in this database, the 79.8% are unpublished while the 20.2% are from the previous literature. The FSP data are distributed within ~455 Survey Sites (SS) geolocated along the trace of well-distinct hosting faults. The database is released in a .txt table and as shapefile (.shp) in WGS84 coordinate system. The FSP records are organized in 34 fields, referring to three themes:
A) FSP identification and SS location (fields 1 to 12);
B) FSP geometry with quality ranking and references (fields 13 to 22);
C) FSP deformation axes (fields 23 to 34).
The first two domains include for each FSP the geographic and structural position, the SS name, the hosting fault-system name and average dip-direction, the geometric parameters (strike, dip-direction and dip, and trend and plunge), the newly calculated rake and corresponding kinematic classifications, the references of the field data and two quality rankings on the input data resolutions and location.
The third domain, entirely new from this work, includes for each FSP, the attitude ( trend and plunge) of the kinematic axes (P, B, T) measured at 45° and 30° from striation in the extensional movement plane (see the main paper for more details).
This database represents the most complete local-scale collection of Quaternary geological fault/slip data and derived kinematic and strain parameters over a large regional seismogenic and potentially seismogenic territory.
The QUIN database is meant as a relatively aseptic data input for forecoming stress inversion and geodynamic modelling, fundamental for new generations of seismotectonics and seismic hazard assessment research
Slowly Deforming Megathrusts within the Continental Lithosphere: A Case from Italy
No full textThe Late Pliocene–Quaternary Outer Thrust System of the Apennine-Maghrebides
fold-and-thrust belt extends ~2000 km from northern Italy to Sicily. Its northernmost arc
is seismically active and represents a test case to study geometries and seismogenesis
of slowly deforming megathrusts developed within the continental lithosphere. Two distinct SW-dipping reverse shear zones (T1 and T2) in the Outer Thrust System of eastern Central Italy have been recently unveiled thanks to geological and integrated seismological information. These shear zones penetrate the Adria continental lithosphere to a maximum depth of ~60 km, with an outward convex shape associated with an outwarddiverging radial pattern. This paper presents new constraints on
the megathrusts’ geometry in light of a novel microseismic catalog (from 2009–2022) specifically focused on the compressional volume. Further details in the reconstruction of T1 and T2 are derived from a recent compressional seismic sequence (November 2022, MW 5.5) located in the Adriatic offshore. It activated the outermost T1 upper crustal segment with pure compressional kinematics and illuminated T2 at lower crustal depths. We integrate geological sections, seismic lines, serial hypocentral cross sections, and focal mechanisms to build a detailed nonplanar 3-D model of the thrusts involved. In addition, we build Coulomb stress scenarios for analyzing the possibility of the static interplay between the upper crust T1 segment activated by the 2022 sequence and the underlying T2 crust segment. The overall results may be relevant for assessing seismic hazards in areas with multi-depth active structures and for gaining insights into plate tectonic dynamics
Reappraisal and Analysis of Macroseismic Data for Seismotectonic Purposes: The Strong Earthquakes of Southern Calabria, Italy
No full textIn tectonically active areas, such as the Italian peninsula, studying the faults responsible for strong earthquakes is often challenging, especially when the earthquakes occurred in historical times. In such cases, geoscientists need to integrate all the available information from historical reports, surface geology, and geophysics to constrain the faults responsible for the earthquakes from a seismotectonic point of view. In this paper, we update and review, according to the EMS-98 scale, the macroseismic fields of the five main events of the 1783 Calabria sequence (5, 6, and 7 February, 1 and 28 March, Mw 5.9 to 7.1), two other destructive events within the same epicentral area of the 1783 sequence (1791, Mw 6.1 and 1894, Mw 6.1), plus the Messina Strait 1908 earthquake (Mw 7.1). For the 1783 seismic sequence, we also elaborate an updated and new catalog of coseismic effects. The new macroseismic fields were analyzed using a series of MATLAB algorithms to identify (1) the unitarity of the field or its partitioning in sub-sources and (2) the field and sub-fields’ main elongation. A collection of earthquake scale laws from literature was used to compute the average source parameters (length, width, and area) with their range of variability, and an elliptical map-view representation of the source geometry was calculated and made available. The analyses of such data allow us to speculate on the earthquakes/faults association, as well as propose new interpretations and reconstruct the space–time evolution of the significant southern Calabria seismic sequences in the last five centuries
Enhanced stent visualization systems during PCI: A case series and review of literature
No full textAbstractEnhanced stent visualization systems increase the amount and quality of information during percutaneous coronary interventions. When compared to imaging techniques such as intravascular ultrasound and optical coherence tomography, enhanced stent visualization systems are easy-to-use, as well as time and cost saving. They are useful during stent implantation, overlap, assessment of integrity, and expansion. We review the available data regarding enhanced stent visualization systems and we report 5 cases showing their current applications during percutaneous coronary interventions.<Learning objective: Enhanced stent visualization (ESV) systems are helpful especially during complex percutaneous coronary interventions (PCI). In everyday clinical practice, ESV systems can be used both along with and instead of intracoronary imaging systems. The present case series show the main current applications of ESV systems during complex PCI cases with a brief review of the available data.
Comorbidità nell’asma grave pediatrico
No full textAsthma comorbidities frequently cause adverse outcomes, such as poor asthma control, frequent asthma attacks, reduced quality of life, and higher healthcare costs. Comorbidities are well-known treatable traits whose proper management can help achieve optimal asthma control. Although multimorbidity is frequent among asthmatics, comorbidities are still a potential cause of misdiagnosis and under or overtreatments, and little is known about their impact on severe pediatric asthma.
Over the years, growing scientific evidence has pointed to the existence of a clear epidemiological correlation between asthma and its comorbidities and of possible common pathogenetic mechanisms responsible for a mutual bi-directional influence between the diseases, with sometimes the possibility of describing distinct asthma phenotypes. In this light, the appropriate management of asthma comorbidities could be crucial to propose personalized or adjunctive therapies of apparent efficacy in patients with severe asthma
Coupling rare earth element analyses and high-resolution topography along fault scarps to investigate past earthquakes: A case study from the Southern Apennines (Italy)
No full textThe systematic study of faults that have released strong earthquakes in the
past is a challenge for seismic hazard assessment. In carbonate landscapes,
the use of rare earth element (REE) concentrations on slickensides may aid
the reconstruction of fault slip history. We applied this methodology to the
Caggiano normal fault (Southern Apennines, Italy), cropping out southeast of
the Irpinia 1980 CE earthquake fault (Mw 6.9), which was responsible for both
the 1561 CE and partly the 1857 CE Basilicata earthquakes (Mw 6.7 and 7.1).
We integrated the REE analysis approach with a high- resolution topographic
analysis along 98 serial topographic profiles to measure vertical separations
attributable to faulting since the Last Glacial Maximum (LGM). The asymmetric
scarp height profiles suggest fault- lateral propagation and along- strike
variations in the fault evolution. Our results indicate the occurrence of 7 to 11
earthquakes with variable slip between ~40 cm and ~70 cm within post- LGM
times. We estimated the magnitudes of the respective earthquakes, between
5.5 and 7.0, and most commonly between 6.3 and 6.5. The results suggest a
recurrence time between 1.6 k.y. and 2.3 k.y. and a slip rate ranging between
0.6 mm/yr and 0.9 mm/yr. This approach may be useful for application to
carbonate fault planes in similar tectonic contexts worldwide
Comparison of Crustal Stress and Strain Fields in the Himalaya–Tibet Region: Geodynamic Implications
No full textThe Himalaya–Tibet region represents a complex region of active deformation related to the ongoing India–Eurasia convergence process. To provide additional constraints on the active processes shaping this region, we used a comprehensive dataset of GNSS and focal mechanisms data and derived crustal strain and stress fields. The results allow the detection of features such as the arc-parallel extension along the Himalayan Arc and the coexistence of strike-slip and normal faulting across Tibet. We discuss our findings concerning the relevant geodynamic models proposed in the literature. While earlier studies largely emphasized the role of either compressional or extensional processes, our findings suggest a more complex interaction between them. In general, our study highlights the critical role of both surface and deep processes in shaping the geodynamic processes. The alignment between tectonic stress and strain rate patterns indicates that the crust is highly elastic and influenced by present-day tectonics. Stress and strain orientations show a clockwise rotation at 31°N, reflecting deep control by the underthrusted Indian Plate. South of this boundary, compression is driven by basal drag from the underthrusting Indian Plate, while northward, escape tectonics dominate, resulting in eastward movement of the Tibetan Plateau. Localized stretching along the Himalaya is likely driven by the oblique convergence resulting from the India–Eurasia collision generating a transtensional regime over the Main Himalayan Thrust. In Tibet, stress variations appear mainly related to changes in the vertical axis, driven by topographically induced stresses linked to the uniform elevation of the plateau. From a broader perspective, these findings improve the understanding of driving crustal forces in the Himalaya–Tibet region and provide insights into how large-scale geodynamics drives surface deformation. Additionally, they contribute to the ongoing debate regarding the applicability of the stress–strain comparison and offer a more comprehensive framework for future research in similar tectonic settings worldwide
Host Faults Database of central Italy
No full textThe “Q-host faults database” is an original compilation, on a GIS platform, of Quaternary faults hosting the Structural Sites (SS) of the QUIN 1.0 database and neighboring to them.
It is supplementary to: QUaternary fault strain INdicators database - QUIN 1.0 - first release from the Apennines of central Italy
by: Giusy Lavecchia1,2, Simone Bello1,2*, Carlo Andrenacci1,2, Daniele Cirillo1,2, Federica Ferrarini1,2, Noemi Vicentini1,2, Rita de Nardis1,2, Gerald Roberts3, Francesco Brozzetti1,2
1: DiSPuTer - Dipartimento di Scienze Psicologiche, della Salute e del Territorio, Università G. d’Annunzio Chieti-Pescara, Chieti, Italy. 2: CRUST - Centro inteRUniversitario per l’analisi Sismotettonica Tridimensionale, Chieti, Italy. 3: Department of Earth and Planetary Sciences, Birkbeck, University of London
Corresponding author: Simone Bello ([email protected])
