177,315 research outputs found
Correction to: Human behavior and Homo-mammal interactions at the first European peopling: new evidence from the Pirro Nord site (Apricena, Southern Italy) (The Science of Nature, (2019), 106, 5-6, (16), 10.1007/s00114-019-1610-4)
No full textIn the original publication of this article, one of the author names was incorrectly captured. The first name should be Razika, then family name should be Chelli–Cheheb
Community weighted mean trait data of Italian forest understories
No full textPlant functional trait data aggregated at the community level (i.e., community weighted mean, CWM) are fundamental to study plant-environment relationships. Here, we provide a large database of CWM values of twelve traits reflecting several plant functions, including leaf, seed, whole-plant, clonal and bud bank traits. The CWMs were calculated in 201 forest stands (a statistically representative sample of all the Italian forests) across three biogeographic regions: Alpine, Continental, and Mediterranean. © 2019 The Author(s
STOP 4 - Loc. Funtanin, Ventimiglia
No full textparagrafo in guida all'escursione di congresso internazional
STOP 1 - Mendatica landslide
No full textparagrafo in guida all'escursione di congresso internazional
Active Landslide Portions Contribute to Surface Water Concentration: Insights from GIS Analysis and Field Data in the Northern Apennines
No full textThe distribution of small water bodies associated to landslides in a part of the Northern Apennines (Italy) has been explored, for the first time, using GIS analysis, field surveys and geophysical imaging. The analysis on the whole investigated area was performed using the Topographic Wetness Index (TWI), a proxy for surface soil moisture patterns based on topographic characteristics. The case studies correspond to two large landslides deep-rooted in the bedrock. The Sauna landslide in the Parma torrent basin and the Berceto landslide in the Taro river basin, have been investigated through field work, geophysics, boreholes and radiocarbon dating for the time constraints of the water bodies. The TWI analysis carried out both at the regional and the case-study scale has shown that low values of this index (drier areas) are more associated with inactive landslides portions, whereas higher values (wetter areas) are more associated with active portions. The analyses on the case studies highlighted that the condition characterized by wet soil and/or the presence of small water bodies are spatially persistent across time in correspondence of the same portion of the landslide that preserves landforms able to maintain these waters. As highlighted by geophysics, these landforms are in connection with deep shapes of the sliding/rupture surface of the landslide that mimic those at the surface
Experimental investigation on corrosion resistance of porcelain enamal composite coating for regenerative air heaters parts
No full textThe present investigation is related to a well known problem in the regenerative heat exchangers: the internal part corrosion due to acid formation during the gas cooling phase. The Ljungström heat exchanger type has been considered and in particular the internal heating element made by different materials have been investigated in order to identify the best solution in terms of corrosion resistance. In particular two different materials for the heating elements have been considered: an anticorrosion steel (S355JOWP) known as COR-TEN A and a decarburized steel coated with a new generation of porcelain enamel composite. In order to study the anticorrosion effectiveness of the porcelain enamel composites two different coating techniques have been used: a wet flow coating and an electrostatic powder coating. Laboratory accelerated life tests have been performed according to ISO-2722 and ISO-2743 and in particular 30% sulphuric acid solution for different time exposure have been used. Experimental results showed that decarburate steel coated with the porcelain enamel composite via wet flow coating technique exhibit the best behaviour in terms of corrosion resistance
Training on the topic of landslides and slope stability in Rwanda: a Summer School in the framework of the Erasmus plus EnRHEd project
No full textFrom the 11th to the 16th of July 2022, a Summer School on "Landslides and Slope Stability Analysis in Rwanda" took place at Rwanda Polytechnic - College of Musanze (Rwanda). The Summer School was organized by the hosting institution (Rwanda Polytechnic - College of Musanze) in cooperation with the University of Parma (Italy), Rwanda Water Resources Board (RWB), and Rwanda Transport Development Agency (RTDA) in the framework of the Erasmus + EnRHEd project (). The EnRHEd project ("Enhancement of Rwandan Higher Education in strategic fields for sustainable growth") is co-funded by the European Commission and is coordinated by the University of Parma. Among the strategic fields for sustainable development, this project deals with "Environmental protection, safety, and management." In this domain, the topic of landslides plays a fundamental role, especially referring to the Rwandan context. It was the first time such a kind of Summer School on slope stability analysis took place in Rwanda. Besides the organizing institutions, the Summer School was supported by many other sponsors, like ICL - International Consortium on Landslides, AIGeo - Italian Association of Physical Geography and Geomorphology, IAH Italian Chapter - International Association of Hydrogeologists, Rocscience Inc., and the University of Parma
Geomorphological and archaeological evidence of Roman times shoreline in the La Spezia Gulf,
No full textTwo sites in the western promontory of La Spezia Gulf are illustrated in which the identification of a shoreline slightly lower than presentday is possible. They are the archaeological site of Varignano Cove, a rural settlement of Roman Times where drainage channels in connection with a dock were identified and a cave in Palmaria Island (Riparo del Pozzale), in which a beach deposit was found in a pit 60 cm below present-day sea level. For both sites chronological attribution is discussed but we particularly focus, for each type of marker, on the sea-level indication and on the error associated to it. Available data point to a position of the 2,100 B.P. shoreline not higher than 41.5 cm below present-day sea level. This is consistent with a moderate uplift rate, testifying the general tectonic stability of the area in the upper pan of the Holocene. The most recent tectonic behaviour of the area is comparable with what is known to be the crustal displacement trend in rhe area in the past 125,000 years
Exploiting Configurational Freezing in Nonequilibrium Monte Carlo Simulations
No full textTo achieve acceptable accuracy in fast-switching free energy estimates by Jarzynski equality [Phys. Rev. Lett. 1997, 78,2690] or Crooks fluctuation theorem [J Stat Phys. 1998, 90, 1481], it is often necessary to realize a large number of externally driven trajectories. This is basically due to inefficient calculation of path-ensemble averages arising from the work dissipated during the nonequilibrium paths. We propose a computational technique, addressed to Monte Carlo simulations, to improve free energy estimates by lowering the dissipated work. The method is inspired by the dynamical freezing approach, recently developed in the context of molecular dynamics simulations [Phys. Rev. 2009, 80, 041124]. The idea is to limit the configurational sampling to particles of a well-established region of the sample (namely, the region where dissipation is supposed to occur), while leaving fixed (frozen) the other particles. Therefore, the method, called configurational freezing, is based on the reasonable assumption that dissipation is a local phenomenon in single-molecule nonequilibrium processes, a statement which is satisfied by most processes, including folding of biopolymers, molecular docking, alchemical transformations, etc. At variance with standard simulations, in configurational freezing simulations the computational cost is not correlated with the size of the whole system, but rather with that of the reaction site. The method is illustrated in two examples, i.e., the calculation of the water to methane relative hydration free energy and the calculation of the potential of mean force of two methane molecules in water solution as a function of their distance
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