1,720,959 research outputs found
Studio dei profili delle sostanze aromatiche glicosilate di vitigni (Vitis vinifera L) autoctoni dell’Emilia-Romagna
No full textResearch on the glycosylated fraction of volatiles aims to investigate the mostly unexpressed aromatic potential of a grapevine. This reservoir of aromatic molecules is partially released during the production and aging of the wine and targeted technological interventions would allow the enhancement of the non aromatic grapevines. The analysis of eleven cultivars and accessions grown in Reggio Emilia highlighted that, apart from Malvasia di Candia aromatica, already studied for its rich component of monoterpenic compounds, Trebbiano di Spagna showed, as well, a very interesting profile with the presence of high concentrations of some monoterpenic alcohols. The other cvs showed a higher homogeneity of composition and a general lack of flavor with a few exception
Characterisation of local varieties of peach [Prunus persica (L.) Batch] and grapevine [Vitis vinifera L., 1753]
No full textThe profile of chemical components involved in the sensory and technological values of local minor cultivars of peach and grapevine were investigated.
Pescabivona (Bivona, Sicily, Italy) is an autochthonous cultivar of white flesh peach [Prunus persica (L.) Batch] that includes four landraces: Murtiddara, Bianca, Agostina, and Settembrina. They are characterised by different ripening times that cover entirely the summer season from the end of June (Murtiddara) until the end of September (Settembrina).
The samples of each landrace were harvested at a “ready-to-eat” ripening stage at three different altitudes. The main results showed high figures of flesh firmness along with a balanced sugar/acidity ratio, in particular for the late ripening landraces. The chance of tasting firm fruits at physiology ripeness and with a pleasant sensory profile as showed by Pescabivona is very infrequent.
Malvasia odorosissima is a little known aromatic grapevine (Vitis vinifera L., 1753) variety that is often confused with Malvasia di Candia aromatica. Both give aromatic white grapes growing in the Emilia Romagna region. Free and glycosylated volatiles of the two varieties harvested during two consecutive vintages were determined by solid phase extraction followed by GC-MS analysis. Results provided the aromatic profile of Malvasia odorosissima for the first time. Conversely to Malvasia di Candia aromatica and other aromatic varieties, Malvasia odorosissima showed a very small amount of glycosylated volatiles, thus almost completely expressing its aromatic potential. The abundance of free terpenoids in the aromatic profile of Malvasia odorosissima is a major feature for the oenological exploitation of its grapes
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
Dispelling 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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