Search results for "ROV"

Tradizioni colte nel «Contrasto» di Cielo d'Alcamo

2012

Dopo un'iniziale ricognizione - anche critico-bibliografica - relativa ai principali problemi storico-letterari e interpretativi concernenti il «Contrasto» di Cielo d'Alcamo (inc. «Rosa fresca aulentissima, ch'apari in ver la state»), ci si sofferma principalmente sugli echi e le suggestioni che il poeta attinge alla tradizione letteraria colta, in particolare alla produzione poetica provenzale e mediolatina. Vengono studiate, soprattutto, la tecnica di ripresa e di concatenazione delle battute fra i due locutori, nonché la presenza di alcuni "tòpoi" di illustre tradizione. Dall'analisi emerge come quella di Cielo d'Alcamo sia non la figura di un giullare o di un poeta "popolare" (come per …

Louviers (Eure) au haut Moyen Age, découvertes anciennes et fouilles récentes du cimetière de la rue du Mûrier

2008

The Sustainability of Reclaimed Asphalt as a Resource for Road Pavement Management through a Circular Economic Model

2019

The transition of the road engineering industry to a circular way of doing business requires more efficient and sustainable resources, energy, and waste management. The rates in which reclaimed asphalt is being recycled or reused in the asphalt mixture production process constitutes a crucial parameter in this transition. This paper aims at establishing a further step towards the combined circularity and sustainability of asphalt pavements, by introducing a framework for quantifying their Material Circularity Index. The framework is based on the methodology proposed by the Ellen MacArthur Foundation and accordingly tailored for the context of asphalt pavements. This study, thus, attempts to…

European National Road Authorities and Circular Economy: An Insight into Their Approaches

2020

The pavement engineering industry, having realized the significance of the impacts that it imposes on the environment through the production, construction and management of its products and assets, has been driven towards a more sustainable and circular way of operating. This has partly been through asphalt recycling, which is an area that many road authorities have prioritized. However, not all the National Road Authorities (NRAs) and/or sector stakeholders seem to be adequately familiar with the Circular Economy (CE) concept. This paper attempts to assist the transition of NRAs to a more circular way of doing business, by analyzing the current situation of CE within national/regional auth…

Citrate-nitrate auto-combustion synthesis of perovskite-type nanopowders: A systematic approach

2009

LIFE CYCLE ASSESSMENT OF ITALIAN CITRUS BASED PRODUCTS. SENSITIVITY ANALYSIS AND IMPROVMENT SCENARIOS

2010

Though many studies concern the agro-food sector in the EU and Italy, and its environmental impacts, literature is quite lacking in works regarding LCA application on citrus products. This paper represents one of the first studies on the environmental impacts of citrus products in order to suggest feasible strategies and actions to improve their environmental performance. In particular, it is part of a research aimed to estimate environmental burdens associated with the production of the following citrus-based products: essential oil, natural juice and concentrated juice from oranges and lemons. The life cycle assessment of these products, published in a previous paper, had highlighted sign…

Incidence and epidemiology of Citrus tristeza virus in the Valencian Community of Spain

2000

Abstract The first outbreak of citrus tristeza disease in Spain caused by Citrus tristeza virus (CTV) was recorded in 1957 in the Valencian Community (VC). In total c. 40 million trees, mainly of sweet orange and mandarin grafted on sour orange rootstocks, declined due to CTV. Large-scale surveys in different municipalities of the VC indicated that the disease spread very fast. Incidence increased from 11% in 1989 to 53% in 1998. Toxoptera aurantii and Aphis spiraecola (inefficient aphid vectors of CTV) predominated before 1985–87. Since then the relatively efficient vector Aphis gossypii has become dominant and induced an epidemic that has been modelled. The large number of A.gossypii that…

Variation of haplotype distributions of two genomic regions of Citrus tristeza virus populations from eastern Spain.

2003

Genetic variation in natural populations of Citrus tristeza virus (CTV) was studied using haplotypes detected by single-strand conformation polymorphism (SSCP) analysis of two genomic regions (p20 gene and segment A, located in ORF1a). Analysis of 254 samples from 125 trees, collected at 12 different sites, yielded 8 different haplotypes for p20 and 5 for segment A. The most frequent haplotype of p20 was predominant at all sites, but several sites differed in the predominance of segment A haplotypes. At most sites, the homozygosity observed for the p20 gene tended to be higher than expected in a neutral evolution, whereas the opposite was true for segment A. Comparison of the populations at…

Dimenticare(?): come finisce una guerra civile. Un tema retorico e politico tra antico e moderno

2020

Il contributo ripercorre il motivo della necessità di dimenticare come possibilità di superamento di un conflitto civile, attraverso una selezione di testi che a partire dalle testimonianze antiche approda alla riflessione dei moderni. In questa prospettiva particolare attenzione è dedicata alla controversia di Seneca il Vecchio 10, 3 The contribution traces the reason for the need to forget as a possibility of overcoming a civil conflict, through a selection of texts that starting from ancient testimonies leads to the reflection of moderns. In this perspective, particular attention is dedicated to the controversy of Seneca the Elder 10, 3

Towards Next Generation System Architecture for Emergency Services

2011

European Union has decided that all emergencies can be reported to authorities by European citizens by calling 112 or sending a text message to 112. Distributing warnings and alerts of authorities to citizens currently happens through national TV and radio channels, but telecom networks are also used now in some countries for this purpose. During the last ten years there have been attempts to develop new system architectures for various emergency service provision phases. Some of them are already deployed in special cases, like in ambulance services. Multimedia emergency alert messages can be delivered to citizens over fixed and mobile telecom networks and commercial systems are already in …