1,721,096 research outputs found
List of scientific publications by Bruno Massa
No full textThe scientific articles (including abstracts and books) published by Bruno Massa are listed according to years. The numerous reviews Bruno has written in recent years, greatly contributing to the dissemination of scientific knowledge, are excluded
Aggiornamento sulla nidificazione della Tartaruga marina Caretta caretta (Reptilia Cheloniidae) in Sicilia. Riflessioni sul valore della Citizen Science
Full text linkUpdating of egg-laying of Loggerhead sea Turtle Caretta caretta (Reptilia Chelonidae) in Sicily.
Remarks on the value of the Citizen Science. The aim of this paper is to put together data on the egglaying
by the Loggerhead sea Turtle Caretta caretta in Sicily, mainly after recordings by amateurs,
tourists and occasional observers. 25 nesting events by this turtle are reported in the main island in
2017 and 2018. Comparing these figures with past records, they appear very high; it may be in part
due to an awareness campaign carried out in the last years to solicit such reports. This suggests that
Sicily may host a much higher nesting population of the Loggerhead sea Turtle than previously
thought. However, the number of nests recorded in the last years is not due to an increase of the
population, but to a higher nighttime beach enjoyment by tourists and local people. Thus, the egg-laying sites of this turtle are really more vulnerable than previously believed, and the risk value
should be currently raised, even if the population is supposedly increased. Because of the importance
of the turtle conservation as “flag species”, that may yield beneficial results to other marine
species (e.g. sharks, dolphins, etc.), a higher monitoring effort is recommended, especially in certain
coastal lines
IN RICORDO DI PIETRO DODERLEIN (2 FEBBRAIO 1809 - 28 MARZO 1895)
Full text linkGli autori ripercorrono le diverse fasi della lunga vita di Pietro Doderlein, che fu professore di zoologia prima a Modena (1839-1862) e poi a Palermo (1862-1894), appena dopo l’unificazione dell’Italia; a Modena contribuì notevolmente ad incrementare il museo di storia naturale dell’Università, a Palermo invece lo fondò di sana pianta e ne fece una struttura così ricca di esemplari da essere ancora oggi un riferimento importante a livello internazionale. Alla sua morte, nel 1895, lasciò una gran quantità di appunti che dimostravano che studiò tanto, scrisse molto, ma pubblicò poco. Grazie a molte carte inedite, custodite nell’Archivio Storico dell’Ateneo di Palermo, è stato possibile scoprire tanti aspetti inediti della vita privata e pubblica di Doderlein, zoologo certamente molto apprezzato e stimato dai suoi contemporanei, sia in Italia che all’estero. Gli autori hanno ripercorso la bibliografia del Doderlein e di chi ha scritto di lui dopo la sua morte, mettendo insieme numerosi documenti attestanti il grande lavoro da lui svolto e l’importanza del materiale da lui messo insieme nel Museo Zoologia dell’Università di Palermo, che oggi porta il suo nome
High-Performance PCR for Alleles Discrimination of Chromo-Helicase-DNA Binding Protein (CHD1) Gene in Bird Sexing
Full text linkGenetic analyses aiming at assessing the presence of specific sequences or alleles are often carried out by PCR. Sexing of most birds is nowadays based on PCR with “universal” primers and relies on the assessment of the presence of the sex-linked CHD1-Z and -W alleles. The entire workflow is relatively time-consuming, especially for batch analyses, whereas methods that allow carrying out the entire procedure in a short time are highly desirable. The only method for outdoor analyses reported so far relies on LAMP; however; it fails to work properly in Procellariiformes. Besides improving the LAMP test; we have developed a PCR-based DNA amplification procedure (named high-performance PCR); whose unique features allow it to outperform standard PCR; making possible the direct, in-tube visual reading of results. We tested it with specifically designed Procellariiformes-targeted primer sets for rapid sexing of the birds using fluorimetric detection. The protocol, combined with rapid DNA extraction, allows for fast reading of results without electrophoresis within less than 1 h from sampling. The technique could be extended to other species, as well as to many other applications
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
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