972 research outputs found
Weight of Evidence and Artificial Neural Networks for potential groundwater springs mapping: an application in Mt. Modino area (Northern Apennines, Italy)
No full textLocations of potential groundwater springs were mapped in an area of 68 km2 in the Northern Apennines of Italy based on Weight of Evidence (WofE) and Radial Basis Function Link Net (RBFLN). A map of more than 200 springs and maps of five causal factors were uploaded to ArcGIS with Spatial Data Modelling extensions. The WofE and RBFLN potential groundwater spring maps had similar prediction rates, allowing about 50% of the training and validation springs to be predicted in about 15 to 20% of the study area. The two maps were merged using a heuristic combination matrix in order to produce two hybrid maps: one representing susceptible areas in both the WofE and RBFLN maps (type A), while the other representing susceptible areas at least in one of the two maps (type B). For small cumulated areas, the success rate of both hybrid maps was higher than that of the parent maps, while for large cumulated areas, only the type B hybrid map performed similarly to the parent maps. This conclusion suggests different applications of these maps to water management purposes
Hydro-chemical anomalies in clay-rich landslides: evidences from case studies in the northern Apennines (Italy)
No full textThe presence of deep faults can affect the groundwater circulation. They can control the rising of deep fluids to
the ground surface. Normally, deep fluids have a chemical composition completely different from the shallow
groundwater; depending on the travel depth, temperature and pressure conditions, mineral composition of the
rocks crossed and time of interaction.
This can affect the hydro-chemical characteristics of near-surface groundwater. Eventually, it can change the
fingerprint of groundwater circulating in landslides and it can influence long-term pore-pressure fluctuations,
playing a role on slope stability.
In the northern Apennines of Italy, several large-scale earth slides – earth flows affecting faulted clayey formations
are believed to be somehow influenced by deep fluids. The study was aimed at detecting hydro-chemical anomalies
in groundwater circulating in 3 landslides that have resumed activity several times in the last decades, and that
are occurring in areas of potential deep-fluid influence (Silla, Ca’ Lita, Vedriano). More than 30 water-samples
were collected at different depth in the landslide body and in the underlying bedrock, owing to the presence
of several piezometers. Physical and chemical analyses comprised determination of temperature, conductibility,
pH, main cations and anions (K+, Na+, Cl, Ca2+, Mg2+, SO42 and HCO). Isotopic analyses (oxygen and
deuterium) are still ongoing. Results allowed discriminating between a Ca-Carbonate hydrotype (400-600 μS/cm),
that is interpreted as being directly connected with rainfall infiltration, and a Na-sulfate-rich hydrotype, that is
interpreted as the evidence of deep fluids upflow. This would actually be the result of the mixing between two
extreme hydrotypes: Na-bicarbonate water and Ca-sulfate waters, both characterized by high salinity, over 4000
μS/cm. The first is typical of geothermal water in the Apennines and is linked to the infiltration at great depth of
rain water and the subsequent long term interaction between water and rock masses that allows to degradation of
the Na-silicate. The second hydrotype, Ca-sulfate water, might be related to the presence of gypsum deposits in
the stratigraphic sequence of the Apennines chain
Modellazione numerica dei meccanismi di riattivazione di grandi frane per scivolamento di terra: l’esempio della frana di Tolara, Appennino settentrionale
No full textThe time and space evolution of large earth slides in weak and complex rockmasses, that characterize thenorthern Apennines, is depending on geological setting and past climate. At the present the reactivation of theselandslides are due to mainly to hydrogeological and geotechnical features. This paper describes the hydrogeological andgeotechnical features of these landslides and the reactivations mechanism using coupled 2D hydrogeological numericalmodel and limit equilibrium analysis (Geoslope, 2004). The case study is the Tolara landslide (Modena Apennines) thatresumed activity in 2002. In this landslide some hydrogeological and geotechnical data have been collected from 2003 todate
Hydro-mechanical features of landslide reactivation in weak clayey rocks
No full textIn the northern Apennines, four representativelarge and deep seated landslides affecting weak rockmasses have been studied before, during and after reactivationevents. Semi-continuous and continuous monitoringin the 2004–2006 period included the dormancy, reactivationand suspension phases, allowing some comments tobe put forward as regards the hydro-mechanical conditionsthat drive the reactivations. The data have highlighted theinteractions between groundwater and displacement ratesin different sections of the slope
Hydrogeological investigation of Pietra di Bismantova slab and surrounding slope deposits (northern Apennines, Italy)
No full textThe recent application of hydrochemistry to unstable slopes reveals the contribution of this technique to better understand hydrological processes, water rock interaction and to outline groundwater flow paths. The aim of this short note is to present results from two years of semi-continuous monitoring (discharge, EC, temperature) of two springs (Eremo and F. Cornia spring) flowing along the SE slope of Bismantova fractured slab, in the stable and unstable portion of the slope respectively. Both springs follow the precipitation pattern with the increase of discharge and decrease of temperature as consequence of rainfall recharge; moreover the increase of EC seems to suggest interaction beetween groundwater and mineral phases hosted along fractures of the slab. Using chemical results a first inverse modeling with PHREEQC have been performed in order to identify the interaction between water infiltrating in host-rock and mineral phases, as well to reconstruct geochemical evolution of groundwater from the upward stable portion to the downward unstable portion of the slope
Analisi della predisposizione al manifestarsi di sorgenti in area appenninica: un approccio statistico applicato all’area del Monte Modino (Provincia di Modena)
No full textIl lavoro,centrato sull’applicazione di codici di calcolo statisticiin ambiente Arc-GIS già utilizzati nel campo dellaricerca geomineraria, intergrati con l’analisi dei complessiidrogeologici, permette l’individuazione delle zonepotenzialmente idonee al reperimento ed eventuale captazionedella risorsa. Il tipo di informazione ottenuta,integrata ad una carta dei complessi idrogeologici, èutile per la pianificazione dello sfruttamento e per latutela della risorsa idrica
Legal Issues regarding Software Use and Reuse within the European Union Legislation
No full textThis paper addresses the problem of legal issues in the use and reuse of a software artifact with reference to the European Union regulations. Up to now software have been protected by means of the author law, however they are very different from other artifacts subject to the author law. This problem is getting more urgent as reuse is becoming a widely used software development methodology. Guidelines for implementing an" almost safe" contract for using and reusing software artifact are presented here. Questions regarding common misconceptions of the rights of the purchasers are also described
Un modello a rete per la ricerca e l’innovazione in Italia
No full textUna proposta per creare un sistema organizzativo policentrico in grado di aiutare le medie e piccole imprese a fare il grande balzo nell’innovazione e nella trasformazione digitale
Writing for the Self: Ripellino’s Notebooks from the Sapienza Archive
No full textThis article examines the genre of personal writing, looking in particular at notebooks that contain scholarly annotations and intimate reflections. Research focuses on the specific case of Ripellino’s notebooks, written during his trips to the Soviet Union (from 1957 to the mid 1970s), and now kept in the Fondo Ripellino (Archivio del Novecento, Sapienza University of Rome). Contents of the notebooks are analysed in the frame of Ripellino’s creative and scholarly activity. Here, the fluidity of Ripellino’s writing allows for certain transits and passages between genres and styles, to a degree that cannot be found in other texts by the author, representing a form of life writing in the broadest sense (autobiographical note, simulated diary), with little regard for chronological accuracy (specific dates and places are rarely indicated), and emphasising impressions and sensations over information. The study highlights several linguistic units and descriptions that are repeated almost verbatim in the complex system of refractions comprised by Ripellino’s texts, offering a fascinating perspective on his writing style. The result is an investigation of the notebook as a fragmentary genre, able to give support to the scarcely explored field of the writing for the self in personal papers
Il sonetto n° 74 di W. Shakespeare e le traduzioni russe di S. Ja. Marsak e B. L. Pasternak
No full textShakespeare's Sonnet 74 and the Russian Translations by S. Ya. Marshak and Boris Pasternak
ABSTRACT
The essay presents a parallel reading of Shakespeare's Sonnet and two Russian translations in a comparative perspective. The poetic form of the sonnet allows for a textual analysis of a work that has strong internal cohesion and can be studied as an independent unit. The choice of these two translations is based on the consideration that the two Russian authors knowingly used the translation as an artistic opportunity at time when the Soviet regime strongly limited the artists' free expression.
Using Gasparov and Tarlinskaya's work as a starting point, the author suggests to break the verses of the original into "rhythmic-semantic segments" (segmenti ritmico-semantici) which coincide, for the most part, with the hemistich. They represent the reading tools not only for the translations, but for the sonnet itself. Thanks to this method, the degrees of distance between the texts come to full light.
The analysis pays special attention to the structure of the strophe and of the rhyme. In this context, the two translations of Shakespearean distich prove to be clues into the possible readings of the Russian texts and into their interpretation of the Shakespeare's sonnet
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