1,720,963 research outputs found
Caratterizzazione di formaggi piemontesi a denominazione d'origine protetta. Comunicazione orale (M. Arlorio)
No full textFoliar application of sodium selenate: effects on bioactive compounds and quality of raspberry (Rubus idaeus L.)
No full textCaratterizzazione elettroforetica per SDS-PAGE e urea-PAGE della frazione proteica di alcuni formaggi D.O.P. piemontesi in funzione della maturazione
No full textApplication of H-1 NMR for the characterisation and authentication of "Tonda Gentile Trilobata" hazelnuts from Piedmont (Italy)
No full textThe Italian hazelnut (Corylus avellana cultivar "Tonda Gentile Trilobata" (TGT) is covered by protected geographical indication "Nocciola Piemonte" and is well-known as the best-suited hazelnut for the industrial transformation into roasted kernel. The hazelnut cultivar identification is primarily based on morphological characteristics, so there is the need for more objective analytical methods for high quality hazelnut authentication. This study reports the H-1 NMR fingerprinting of raw and roasted hazelnut, with the aim of obtaining hazelnut classification based on their spectroscopic pattern. H-1 NMR analyses were carried out on polar extracts of TGT and other cultivars: the data were analysed with multivariate statistical methods. Results showed that H-1 NMR combined with chemometrics is useful to characterise the hazelnuts as a function of the cultivars, both on raw and roasted form. The classification models allowed identifying molecular markers useful to distinguish TGT from other types, among these trigonelline, amino acids and an unidentified orto-disubstituted aromatic compound. (C) 2013 Elsevier Ltd. All rights reserved
Chemical characterization, and DNA tracking of Sardinian botargo by mugil cephalus from different geographical origins
No full textChemical and genomic combined approach applied to the characterization and identification of Italian Allium sativum L.
No full textChemotype analyses and random amplified polymorphic DNA (RAPD) genomic analyses have been
applied to the characterization of Allium sativum variety from Voghiera (Ferrara, Italy), a typical Italian
product actually demanding the Protected Designation of Origin (PDO). The garlic from Voghiera is
characterized by peculiar morphological and composition characteristics. The proximate composition
and atomic absorbance spectrometry elemental pattern of this garlic suggested as the chemical
composition did not depend on the intrinsic pedologic soil features only, but it was probably connected
to some peculiar genetic characters. Amplification of genomic DNA using random primers highlighted
a good clustering differentiating of Voghiera Allium sativum from five commercial reference samples
used in this study (Piacentino, Serena, France, China, and Adriano varieties), confirming the existence
of intervarietal genetic difference. The intravarietal polymorphisms of Voghiera samples were low
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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