1,720,968 research outputs found
Contaminazione residuale da Cs-137, “Post Chernobyl”, nella Provincia di Como (Lombardia, Italia)
No full textOsservazioni preliminari sulle variazioni della cortisolemia nel cane nelle procedure di diagnostica per immagini
No full text
Variations of serum cortisol in Argentine horses subjected to ship transport and adaptation stress
No full textThe response to stress after transport by ship and adaptation to a new environment was evaluated by variations of serum cortisol (RIA method) in 40 horses imported in Italy from Argentina. The study started at arrival (April 2000) and lasted 6 months (October 2000). As a control group, 42 horses living in Italy have been evaluated. In all subjects, hematocrit, total protein, total bilirubin, urea, creatinine, and creatinine kinase were determined. In control horses, cortisol values ranged between 103 and 278 nM/L (mean 190.24 ± SE 13.50, SD 43.82, CV 23.03), and no significant differences among sex or age groups were observed (P > .05). In subjects coming from Argentina, cortisol values observed at landing were within the normal range (193.73 nM/L ± SE 7.95, SD 50.29, CV 25.95), increased substantially in May (366.06 nM/L ± SE 10.25, SD 64.81, CV 17.70) and in June (337.19 nM/L ± SE 12.16, SD 76.89, CV 22.80) and returned to normal in October (187.87 nM/L ± SE 12.54, SD 43.50, CV 23.15). The differences observed in May and in June were significant in comparison with the values observed in April (P < .01). The variations of CK in horses coming from Argentina were of great interest because they seemed at high levels in May and June. Data indicated that adaptation to the journey was very good. Stress conditions appeared in the first period of stay in Italy, maybe because of hierarchical conflicts resulting from an incorrect grouping of the subjects
Plasma cortisol levels in dogs undergoing diagnostic imaging procedures
No full textMAMMALS react to adverse experiences such as pain with the activation of hypothalamus-hypophysis-adrenal gland axis, which promotes the synthesis of corticosteroids, leading to increased serum concentrations. Cortisol is the most significant of the corticosteroids in dogs (Cavallone and
others 2001, 2002). There have been reports concerning cortisol levels in dogs subjected to anaesthesia and surgical stress (Fox and others 1998, Marcovich and others 2001,
Naitoh and others 2002, Vaisanen and others 2002), but there appear to be no reports related to diagnostic imaging.
This short communication describes a study in which the variations in plasma cortisol concentrations were studied during diagnostic imaging procedures in dogs in order to evaluate possible states of discomfort or pain that may be induced by the administration of contrast medium and by
positioning manoeuvres
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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