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Mappatura fine di un QTL per l'elevato contenuto proteico in una linea di frumento duro contenente una regione cromosomica introgressa dalla varietà selvatica dicoccoides
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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
Molecular and phenotypic characterization of pomegranate (Punica granatum L.) genotypes from southern Italy
No full textMOLECULAR AND TECHNOLOGICAL STUDY OF ANTHOCYANIN CONTENT IN PURPLE DURUM WHEAT
No full textColour is one of the most important quality traits of foods, as it determines acceptability to the consumers and is positively correlated to their nutritional quality. Anthocyanins are the largest group of water-soluble natural pigments that give red, violet, and blue color to many flowers, fruits and vegetables. These pigments have been detected also in several cereal species, included blue and purple-grain wheats, and exhibit many healthy properties such as positive effects on heart and eye function, anti-inflammatory and antioxidant activity. The aims of this work were: i) to identify SSR markers associated to high anthocyanin content by means of Bulk Segregant Analysis; ii) to produce functional biscuits enriched in anthocyanins, by using the purple grain line PG2 (derived from ethiopic selvatic accessions). In order to study the genetic basis of anthocyanin content in durum wheat, a segregant F3 population consisting of 146 lines was developed by crossing the PG2 purple line and the durum wheat cv. Grecale. A total of 231 microsatellite markers (150 genomic SSR and 81 EST-SSRs ) were chosen for covering the entire length of each chromosome and analysed between the two parents by means of capillary electrophoresis, in order to screen for polymorphism. As expected, the level of polymorphism was higher for gSSRs (48.5%) than for EST-derived SSRs (15.6 %). The 153 total polymorphic primers originated 180 loci with a number of alleles per locus ranging from 1 to 5. The Bulk Segregant Analysis (BSA) strategy will be used in order to fast identify the genomic regions involved in the control of pigment accumulation. The phenotypic evaluation of the segregant population for anthocyanins content was conduced in order to set two bulks of DNA at high and low pigment content. With regard to the technological characterisation, the obtained results confirmed higher levels of anthocyanins in PG2 whole meal than in cv. Ciccio, used as control (18 and 2.5 mg CyCl/kg d.m., respectively), reflected by higher antioxidant activity, assessed by DPPH test. Moreover, whole meal of PG2 was used to prepare functional biscuits, that maintained higher anthocyanin content and antioxidant activity than biscuits from control cultivar. Novel pigmented varieties could enhance durum wheat marketing potential, and benefit the agricultural economy
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