1,721,128 research outputs found
Pronti alla dismissione delle piattaforme italiane?
No full textAl termine di un percorso legislativo - che parte con la direttiva UE 2014/52 si è recentemente pervenuti alla firma del DM 15 febbraio 2019 relativo alla definizione delle “Linee Guida Nazionali per la dismissione mineraria delle piattaforme per la coltivazione di idrocarburi in mare e delle infrastrutture connesse”.
Le Linee Guida rappresentano un primo passo concreto per il raggiungimento di uno degli obiettivi di politica energetica sostenibile nel settore upstream, attraverso l’identificazione delle migliori tecnologie disponibili per la dismissione mineraria, che siano compatibili sotto i profili ambientali e sociali, oltre che tecnicamente ed economicamente sostenibili, con un particolare interesse a valutare anche eventuali usi alternativi innovativi in ottica di economia circolare e “crescita blu”.
Nell’articolo si cerca di dare una risposta al quesito: siamo pronti alla dismissione mineraria di piattaforme?
Dopo avere passato in rassegna la pubblicazione delle prime piattaforme in dismissione in questo nuovo ambito normativo, vengono sollevate alcune questioni irrisolte in ordine all’approvazione del Piano della Transizione Energetica Sostenibile delle Aree Idonee e, in particolare, sul timing di presentazione del Piano, al fine di valorizzare la metodologia di partecipazione sperimentata che preveda l’apertura di tavoli di lavoro anche ai rappresentanti degli enti territoriali, enti di ricerca ed altri stakeholder
Selection of marine bacteria producing antimicrobial compounds active against farmed fish pathogens
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BIODEGRADATION OF UNPRETREATED POLYETHYLENE FILMS BY MARINE PURE BACTERIAL ISOLATES AND ARTIFICIAL CONSORTIA
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Surface sediment quality assessment in a coastal lagoon (NW Adriatic Sea) based on SEM-AVS analysis
No full textSurface sediments from Pialassa Piomboni coastal lagoon (NW Adriatic Sea, Italy) were analysed, in order to evaluate the potential risk associated with the presence of heavy metals (Cd, Cu, Ni, Pb e Zn) for resident biota. Sediments have been extracted with HCl 1M under inert atmosphere (N2), and subsequently the content of acid-volatile sulfide (AVS) and the sum of molar concentrations of simultaneously extracted metals (∑SEM) were determined. The AVS levels are between 0.03 and 8.8 μmol g-1 (3.1 ± 2.8 μmol g-1); while ∑SEM range from 0.3 to 6.6 μmol g-1 (1.7 ± 1.3 μmol g-1). Zn and Cd represent the higher (31 - 93%) and lower (> 1%) contributions to ∑SEM value, respectively. The high ∑SEM concentrations are located in the southern area of the lagoon. Over 90% of surface sediments analyzed did not show potential adverse biological effects according to the criteria proposed by the USEPA
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