Search results for " sistema."
showing 10 items of 1920 documents
Determining short-term changes in the hydraulic properties of a sandy-loam soil by a three-run infiltration experiment
2020
Soil structure-dependent parameters can vary rapidly as a consequence of perturbing events such as intense rainfall. Investigating their short-term changes is therefore essential to understand the general behaviour of a porous medium. The aim of this study is to gain insight into the effects of wetting, perturbation and recovery processes through different sequences of Beerkan infiltration experiments performed on a sandy-loam soil. Two different three-run infiltration experiments (LHL and LLL) were carried out by pouring water at low (L, non-perturbing) and high (H, perturbing) heights above the soil surface and at short time intervals (hours, days). The results demonstrate that the propos…
Water transmission properties of a sandy-loam soil estimated with Beerkan runs differing by the infiltration time criterion
2021
Abstract The Beerkan method consists of a ponded infiltration experiment from a single ring inserted a small depth into the soil. Fixed, small volumes of water are repeatedly poured into the ring to maintain a quasi-zero head on the soil surface. According to the standard Beerkan infiltration run, a new water volume is poured on the infiltration surface when the previously applied volume has completely infiltrated and the soil surface is entirely exposed to air (ta criterion). However, water could also be applied when the soil exposition to air begins (to criterion) or half the soil surface is exposed to air (tm criterion). The effect of the infiltration time criterion on determination of t…
Beneficia imperiali e 'logica del sistema'. Spunti di metodo tra le righe di Alberto Burdese.
2016
The contribution deals with some hermeneutical positions of classical Jurists concerning the beneficia imperialia from the point of view of their deviating from the ‘ratio iuris’. The Author – by recalling the metodological warning of Alberto Burdese about paying vigilant and cautious attention for the textual data – examines some sources which regard the relationship between beneficia and regulae iuris and between beneficia, aequitas, utilitas and the attribution of the interpretation of beneficia directly to the Emperor.
SOCIAL NETWORKS, BIG DATA AND TRANSPORT PLANNING
2016
[EN] The characteristics of people who are related or tied to each individual affects her activity-travel behavior. That influence is especially associated to social and recreational activities, which are increasingly important. Collecting high quality data from those social networks is very difficult using traditional travel surveys, because respondents are asked about their general social life, which is most demanding to remember that specific facts. On the other hand, currently there are different potential sources of transport data, which is characterized by the huge amount of information available, the velocity with it is obtained and the variety of format in which is presented. This s…
Traditional agrosystems trajectories analysis using a vegetation science approach: the MEMOLA EU FP7 Project as a case study
2017
The UE FP7 research project MEMOLA (Mediterranean Mountainous Landscapes: an historical approach to cultural heritage based on traditional agrosystems) aims at investigating cultural landscapes through a diachronic study of the relationship between human populations and natural resources. The project analyses from an interdisciplinary perspective the drivers and dynamics that have generated historical landscapes in four areas of Mediterranean Region (Sierra Nevada, in Spain; Colli Euganei, in Northern Italy; Monti di Trapani, in Sicily; Vjosa Valley in Albania), with a research group of ten partners. The syndynamic study of vegetation (series and geoseries) can be used as a marker to better…
Non-Indigenous Species (NIS) within Marine Protected Areas (MPAs). The case study of the Aegadian Islands MPA (Sicily, Tyrrhenian Sea) and the Dwejra…
2018
The introduction of non-indigenous species (NIS) has been pointed out as a major threat to biodiversity. NIS may become invasive alien species (IAS) and may cause biodiversity loss and ecosystem service changes. In the Mediterranean Sea, Sicily and surrounding islands, also including a high number of Marine Protected Area (MPAs), as a consequence of their geographic position and the intense maritime traffic, is a region particularly vulnerable and prone to NIS invasions. Since frontiers do not exist in the sea, biological invasions may severely affect MPAs, whose major aim is biodiversity conservation. Among the Sicilian MPAs, the Aegadian Islands MPA report the highest number of NIS (19). M…
On the distribution and subspecific variation of the Tunisian- Algerian endemicDelphinium sylvaticum(Ranunculaceae)
2015
The morphology and biogeography of the Tunisian–Algerian endemic Delphinium sylvaticum Pomel has been studied in Tunisia. As presented here, this study resulted in an enlargement of the known distribution and in the description of two new subspecies: D. sylvaticum subsp. ichkeulianum El Mokni, Domina, Sebei & El Aouni and D. sylvaticum subsp. purpureum El Mokni, Domina, Sebei & El Aouni native to Tunisia in Mogods and in the northeast regions, respectively. Besides ecological features and clearly separated distribution, the two new subspecies show very well differentiated morphology. An updated distribution map and a diagnostic key of the studied taxa are provided.
Tassonomia integrata per lo studio della biodiversità vegetale
2010
Diversi marcatori plastidiali sono stati testati su varie specie della flora vascolare spontanea al fine di valutarne il potere discriminante come DNA barcoding, da integrare nell'identificazione tassonomica con i dati morfologici, cariologici, fenologici e biogeografici.