1,721,022 research outputs found
Diagnostica per immagini nella patologia di confine otorinolaringoiatrica ed odontostomatologica
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Fill in the Gaps of Secondary Mitral Regurgitation: a Continuum Challenge From Pathophysiology to Prognosis
No full textPurpose of Review: Mitral regurgitation (MR) is one of the most frequent valvular heart diseases encountered in clinical practice. In contrast to primary MR, less is still known about the pathophysiology, diagnosis, and prognosis of secondary MR. The purpose of this report is to provide a review, upon the last knowledge reported in the literature, on the role and management of secondary MR in clinical practice. Recent Findings: Recent data highlight secondary MR not as a single pathological entity but as a wide spectrum of interconnected conditions which portend poor outcome. Although the role of secondary MR on clinical outcome is debated, recent available data suggest an independent association of MR with prognosis. Nevertheless, available treatment did not show a clear benefit after MR correction. Summary: Further studies are needed to better categorize and assess secondary MR beyond schematic classification. A management approach should be tailored upon each clinical context of presentation
Studio della funzionalità tiroidea in 22 soggetti affetti da edema di reinke: evidenza di una correlazione
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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
The use of forced ventilation during microlaryngoscopy with laser CO(2).
No full textCO2 laser is currently used in the treatment of laryngeal lesions. The technique leads to vaporisation of the tissues on which it is focused, resulting in the production of smoke that remains in the laryngoscope and in the area of the exposed larynx. The fumes can only be partially removed with an aspiration tube. As a result, the vision of the operative field becomes obscured, thus making it difficult to perform surgery. We present a method to resolve this problem consisting in forced ventilation of the air present in the laryngoscope and the exposed larynx. Simultaneous use of the forced ventilation air and the aspiration tube permits a more efficient withdrawal of fumes from the operative field and a better view of the larynx for the surgeon. Since 1986, we have performed 200 CO2 laser cordectomies in patients with early stage glottic cancer without any kind of complication
E' sempre necessaria la terapia antibiotica profilattica negli interventi di adenoidectomia
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