Search results for "CA [SR]"
showing 10 items of 2784 documents
La calibrazione delle stime nell'indagine sul turismo incoming in Sicilia
2013
L’unificazione della segnaletica stradale verticale nell’ambito dell’Unione Europea: un’applicazione ai segnali di pericolo
2010
La presente memoria illustra la metodologia ed i risultati di un’attività di ricerca finalizzata a studiare il problema dell’unificazione europea dei sistemi di segnaletica stradale verticale, la quale rappresenta uno dei presupposti fondamentali per favorire la crescita dei livelli di efficienza e sicurezza della mobilità delle persone e delle merci in ambito UE. Nella prima fase di tale studio, i cui risultati sono riportati in questo articolo, l’attenzione è stata focalizzata sui cartelli stradali di pericolo, utilizzando una base dati relativa a 19 Stati membri dell’Unione Europea. I set di segnali di pericolo di questi Paesi sono stati confrontati tramite un’analisi a molti criteri, ba…
More nature in the city
2020
According to projects and practices that the Italian botanists and ecologists are carrying out for bringing “more nature in the city”, new insights for a factual integration between ecological perspectives and more consolidated aesthetic and agronomic approaches to the sustainable planning and management of urban green areas are provided.
Carenze conoscitive, spunti per la ricerca, priorità
2014
Enti locali e progetti di qualità: "I giovani in... Comune"
2000
Pyrus pedrottiana (Rosaceae), a new species from the Nebrodi Mountains (N-E Sicily)
2022
A new species of Pyrus for the dendroflora of Sicily is here described. It is Pyrus pedrottiana, actually considered endemic to the Nebrodi Mountains, a territory which includes the largest wooded area of the island with a high forest biodiversity.In the same area, P. vallis-demonis and P. ciancioi have also been described in recent times. The authors report diagnostic characters to distinguish the new taxon from the other two sympatric species.
Hieracium umbrosum subsp. abietinum (Asteraceae), a further example of amphi-Adriatic disjunction
2017
So far considered as endemic to Greece, Hieracium umbrosum subsp. abietinum is reported as new for the Italian flora. Its presence has been noted on the Pollino National Park (S Italy). Morphological, ecological and taxonomical notes are given. This discovery increases the list of taxa showing an amphi-Adriatic distribution.
Critical forms in Sicilian populations of annual Lysimachia L. (Primulaceae)
2018
Based on recent literature, in the Primrose family the genus Lysimachia L. absorbed Anagallis L. (1). As a result, new name combinations have been introduced for this genus, thus involving the increase of specific and intraspecific taxa (for Italian flora see 2 and 3). A further consequence, focused in this contribution, concerns the binomial combination Lysimachia arvensis (L.) U.Manns & Anderb., which has different synonyms and includes several specific and intraspecific taxa. As far as the taxonomic history of the annual taxa of Anagallis is concerned, different authors preferred to include some of them in A. arvensis and in A. foemina at the level of variety (4) or subspecies (2), w…
Effects of NAA and Ecklonia maxima Extracts on Lettuce and Tomato Transplant Production
2022
Ecklonia maxima and the commercial biostimulants produced from it contain various plant growth regulators that are responsible for the growth stimulation recorded in many crops. Auxins are one of the major plant growth regulators contained in E. maxima extracts. The aim of this research was to evaluate the growth-promoting effect of a seaweed extract from E. maxima on lettuce and tomato transplant production under nursery conditions, and to compare the effect of this extract with an equal concentration of synthetic auxin. Two doses of natural or synthetic exogenous auxins (50 or 100 μg L−1) were supplied to the substrate through the irrigation water with an ebb and flow system, 4, …
Lenguaje coloquial y videojuegos en línea. El caso de los MOBA; hacia un nuevo tipo de comunicación
2023
Los discursos mediados por ordenador (Hering, 2007; y Androutsopoulos, 2015) son una clase de comunicación que poco a poco han ido introduciéndose en todos los espacios de nuestro día a día. Entre ellos, los videojuegos en línea ocupan un lugar especial. Los usuarios, además de poder comunicarse por medio del canal oral u escrito, comparten un entorno virtual que sustituye, en cierta medida, al espacio físico. Gracias a esta característica los jugadores no solo hablan con sus interlocutores, sino que también tienen la posibilidad de observar las acciones que realizan sus compañeros a través de sus avatares (Yus, 2010; 2011). Un ejemplo de ello lo constituyen los títulos pertenecientes al gé…