1,720,961 research outputs found
Evaluation of the antibacterial activity of a new ozonized olive oil against oral and periodontal pathogens
Full text linkIn the present study, the antimicrobial properties of a new ozonized olive oil (O-zone gel) against oral and periodontal pathogens will be evaluated and compared with that of common CHX-based agents. O-zone gel was compared with two agents based on chlorhexidine digluconate (CHX): Corsodyl Dental Gel and Plak Gel. A. actinomycetemcomitans, P. intermedia and S. mutans, were selected and the antibacterial capability of the compounds was tested by using direct contact agar diffusion test (DCT) and minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) evaluations. Differences between specific means were analyzed by a one-way analysis of variance (ANOVA). Group means were compared using a one-way ANOVA and Tukey?s test (P<0.05). O-zone gel reported inhibition zones which correspond to 33% and 43% of that achieved by the CHX agents. No inhibition of bacterial growth (MIC) on the Gram-positive strain by using O-zone gel was found and no antimicrobial effect (MBC) was observed by using O-zone gel on both Gram-negative and -positive strains. The new ozonated oil was a relatively moderate antiseptic. Gram-negative bacteria proved to be more sensitive to ozonized olive oil than Gram-positive ones. The ozonized olive oil demonstrated a lower antibacterial activity if compared to the CHX-based agents tested
La svolta del 1948: La Fédération fra federalismo integrale ed europeismo, in A settant'anni dal Congresso d'Europa a l'Aja. Unità ideale e unità politica, a cura di Daniela Preda e Francesco Velo, Bari, Cacucci, 2020, pp. 163-184
No full textCircoscrizione unica europea e liste transnazionali: un’occasione perduta per realizzare uno strumento eccezionale di rappresentanza parlamentare davvero sovranazionale
No full textLo scritto contiene osservazioni sulla proposta di istituire un collegio unico europeo con liste transazionali rigettata a febbraio 2018 dal Parlamento europeo (PE) dopo l’adozione da parte della Commissione affari costituzionali (AFCO).
Dopo una breve ricostruzione dell’idea, risalente nel tempo, di eleggere alcuni europarlamentari in una circoscrizione unica europea, attraverso liste necessariamente composte da cittadini di più paesi europei, il saggio affronta l'esame del recente tentativo di introdurre un collegio unico europeo. Tentativo caratterizzato da due novità: la potenziale occasione determinata dalla Brexit, che facilita una ridiscussione della distribuzione dei seggi e il collegamento delle liste transnazionali con la procedura degli Spitzenkandidaten.
Lo studio esamina inoltre criticamente le posizioni emerse nel dibattito parlamentare, sottolineando come stavolta agli argomenti tipicamente nazionalistici se ne affianchino alcuni di orientamento federalista. Esso conclude che la creazione del descritto collegio transnazionale avrebbe potuto innescare un processo di ripensamento dei meccanismi della rappresentanza europea, sia parlamentari che partitici
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
Il libro bianco sul futuro dell'Europa e lo spazio dei diritti sociali quale fattore di integrazione europea
No full textDispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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