1,720,970 research outputs found
Flavonoids and Immune Function in Human: A Systematic Review
No full textFlavonoids, through a modulation of immune function, have been suggested to be involved in the role played by plant foods in disease prevention. We performed a systematic search in the MEDLINE database to review the effect of flavonoid-rich foods and flavonoids supplements on immune function. A total of 58 studies, were identified as suitable: 41 addressed in vivo proinflammatory cytokines and 15 measured ex vivo markers of immune function. According to our findings and on the basis of single food items, the number of studies in humans is limited and, for galenic supplements, only quercetin has been investigated. More evidences are needed to clarify the role of flavonoids as modulator of immune function in humans.
Effect of biopreservation treatments on Listeria monocytogenes isolated from meat products
No full textCooking effect on in vitro non-enzymatic antioxidant capacity (NEAC) of chicory (Radicchio rosso di Treviso)
No full textFlavanols, proanthocyanidins and antioxidant activity changes during cocoa (Theobroma cacao L.) roasting as affected by temperature and time of processing
No full textThe effect of roasting on the content of flavanols and proanthocyanidins and on the antioxidant activity of
cocoa beans was investigated. Cocoa beans were roasted at three temperatures (125, 135 and 145 C), for
different times, to reach moisture contents of about 2 g 100 g1. Flavanols and proanthocyanidins were
determined, and the antioxidant activity was tested by total phenolic index (TPI), ferric reducing antioxidant
power (FRAP) and total radical trapping antioxidant parameter (TRAP) methods.
The rates of flavanol and total proanthocyanidin loss increased with roasting temperatures. Moisture
content of the roasted beans being equal, high temperature-short time processes minimised proanthocyanidins
loss. Moisture content being equal, the average roasting temperature (135 C) determined the
highest TPI and FRAP values and the highest temperature (145 C) determined the lowest TPI values.
Moisture content being equal, low temperature-long time roasting processes maximised the chainbreaking
activity, as determined by the TRAP method
Effect of biopreservation treatment on Listeria monocytogenes isolated from meat products
No full text
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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