1,720,989 research outputs found
Processi tradizionali e polifenoli naturali per formaggi innovativi e nutraceutici
Full text linkl’aggiunta di composti antiossidanti naturali nei prodotti caseari
ne aumenta il valore nutrizionale e il periodo di conservabilita
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
Development of an ad hoc starter culture for the production of functional raw ewes’ milk cheeses through the addition of grape pomace powder
No full textThe present work was carried out to select lactic acid bacteria (LAB) resistant to polyphenols in order to develop an ad hoc starter culture for the production of functional fresh ewes’ milk cheeses through the addition of grape pomace powder (GPP). To this purpose, raw ewes’ milk samples were inoculated with individual polyphenols belonging to five classes: flavanols (cathechin, epicatechin and epigallocathechin), flavonols (quercetin), flavones (rutin), hydroxyl-benzoic acid (vanillic acid and syringic acid) and hydroxyl-cinnamic acid (caffeic acid and cumaric acid). These polyphenols are commonly associated with the wine industry by-products and were added in milk to a final concentration of 0.5 mg/mL. All samples were incubated at 30°C and 44°C for 48h in order to select potential mesophilic and thermophilic starter LAB. Plate counts showed the total microbial counts (TMC) till levels of almost 109 CFU/mL and all milk samples were dominated by coccus LAB. All colonies with different morphological appearance were isolated and differentiated on the basis of their phenotypic characteristics and by Randomly Amplified Polymorphic DNA (RAPD)-PCR profiles. A total of 55 strains were collected and subjected to the genotypic analysis by means of 16S rRNA gene sequencing, which identified 5 LAB species belonging to two genera (Enterococcus and Lactococcus). The species most frequently found were Lactococcus lactis. The 55 strains were investigated in vitro for their general dairy aptitudes and four strains of L. lactis (MISE36, MISE94, MISE169 and MISE190) showed technological traits relevant to act as starter strains for cheese production.In order to produce a GPP-fortified fresh cheeses, red grape pomaces of Nero D’Avola cultivar were provided by a winemaking factory (Cantine Europa, Petrosino, Italy). Grape pomaces were dried at 54°C for 48 h and milled through a Retsch apparatus to a particle size of 250 μm. The experimental cheese making trials were carried out in a dairy pilot plant (Biopek, Gibellina, Italy) following the protocol of “pressed” cheeses. For each trial 20 L of pasteurised milk was divided into two plastic vats (10 L each) representing two different trials. Both vats were inoculated with the individual starter LAB cultures (100 mL) to reach a final cell density of 107 CFU/mL. One vat represented the control cheese (CC) production. The second vat represented the experimental cheese (EC) that, after curd extraction, was added with 1% (w/w) GPP. The cheeses were sampled after one month of ripening. All lactococci were able to perform the rapid acidification in CC and EC production, showing that polyphenols of GPP did not slow down starter development. Plate counts and RAPD analysis applied to the colonies isolated from the highest dilutions of samples confirmed the dominance of the added strains. A sensory evaluation of the resulting cheeses, indicated the cheeses processed with the addition of GPP were well appreciated by the judges. Analyses are in progress to evaluate the nutraceutical properties of the experimental cheeses.
This research has been supported by the grant MISE-2017-NAZ-0228 - CUP: B78I1700026000
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