1,721,001 research outputs found

    Renal lesions after unilateral ureterosigmoidostomy in the rabbit: preliminary results

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    Unilateral ureterosigmoidostomy (U.S.S.) was performed on 15 rabbits and then the animals were sacrificed after 3, 8 and 15 months. The gross appearance of the kidney and radiological investigations revealed enlargement of the pelvis and of the ureter on the operated side although the anastomosis was patent in all cases. In rabbits sacrificed 8 months after U.S.S. an adenomatous polyp was present at the site of anastomosis. Histological examination of the affected kidney showed pyelonephritis secondary to obstruction and immunopathological studies revealed in some rabbits glomerular and tubular deposition of immunoglobulins and complement. The contralateral kidney was always normal. Biochemical investigations showed only a moderate increase in blood urea nitrogen and plasma creatinine values

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

    Continuous monitoring of nocturnal penile tumescence and rigidity in the evaluation of erection disorders. Preliminary data

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    Nocturnal penile tumescence measurements continues to be an important step in the diagnosis of impaired erectile function. We present our experience with this technique employed on 65 patients who consulted at our andrologic center. Our results corroborate the importance of the NPR-R test with the Rigi-Scan in the evaluation of this pathology to ensure these patients receive the most appropriate treatment

    Surgical repair of congenital penile curvature

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    Congenital penile curvature is not such a rare pathology and it is responsible for important aesthetic and functional problems. This malformation, can render intercourse difficult and painful, but it can be cured with a simple surgical procedure that almost always guarantees excellent results. In this work we report on the treatment of 48 patients (aged 16-34) with congenital penile curvature with a follow-up of 6 months to 10 years. The aetiology is also briefly analysed. A discussion follows on the diagnostic criteria for better interpretation of the main characteristics of this problem in relation to its functional appearance. A comparison of different surgical techniques is also shown, focusing over the procedure we perform: plissettage of the tunica albuginea. This technique is performed through a penile skin incision opposite to the maximal curvature of the organ, exposure of the tunica albuginea and the positioning of one or more series of stitches. The overall results show that 44 out of 48 patients were fully satisfied both from the aesthetic and functional points of view, while 4 were partly satisfied from the aesthetic point of view alone
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