1,721,024 research outputs found
“Transferrins, nitric oxide and cytokines: complex responses to Marek’s Disease Virus reinfection in a chicken lymphoblastoid cell line.”
No full text“Preliminary characterization of chicken peripheral blood and spleen granular lymphocytes”.
No full textAVIAN CYTOKINES-AN OVERVIEW
No full textIn recent years the knowledge of avian cytokines has advanced and new data are continuously added. Nevertheless,
some discontinuities persist and the correlations between molecular and functional levels are not completely clear.
Most of the studies are focused on chicken, and comparative aspects with other avian groups are limited. The existence of
T1 and T3 avian cytokines was assessed long ago and the recent relevant demonstration of the existence of T2 cytokines
in birds is a further step in depicting a more complete view on avian immunology. The progressive knowledge of avian
cytokines can hopefully help in developing new strategies in prophylaxis and therapy of avian diseases, not always completely
controlled due to the emergence of more pathogenic strains
“Attività Natural Killer in splenociti e cellule mononucleate di sangue periferico di pollo”.
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
“Effects of transferrins and cytokines on Nitric Oxide production by an avian lymphoblastoid cell line infected with Marek's Disease Virus”
No full textMarek’s disease virus (MDV), the causative agent of Marek’s disease (MD), is a herpesvirus that infects
poultry causing T lymphomas. Although vaccination may prevent lymphomas formation, it is not known
whether it controls viral replication and spreading in the environment. Ovotransferrin (Otrf), a member
of the transferrin family, is known to exert in vitro antiviral activity in primary cultures of chicken embryo
fibroblasts (CEF). In addition Otrf is produced by CEF and by an avian lymphoblastoid cell line (MDCCMSB1)
following infection/reinfection withMDV. The presentworkwas designed to investigate the effects
of reinfection and of Otrf and lactoferrin (Lf) on the production by MDCC-MSB1 of nitric oxide (NO), a
molecule naturally exerting an antiviral activity. These effects were also tested with two cytokines (IL-8
and IFN-), alone and in association with transferrins. Synergy was found between Otrf and IFN-, thus
suggesting a possible role in a complementary or alternative strategy against MDV spreading
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