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    Clinical comparison between wall defects surgery using conventional and low-adhesion mesh materials Preliminary results

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    PURPOSE: The use of prosthetic materials for hernia repair has become a standard procedure. Still the optimal material has not yet been found. Primitive hernia with loss of substance and big incisional hernia repair requires a prosthetic material which not induce, especially in the area of visceral peritoneal contact, chronic inflammation and fibrosis. The aim of this study is to clinically compare two different mesh materials: uncoated monofilament polypropylene and polypropylene- polyurethane double surface mesh. METHODS:Forty eight primitive hernia and incisional hernia affected patients were included in the study. They were randomly allocated in two groups. In each group a different type of mesh was utilized, respectively uncoated monofilament polypropylene mesh and polypropylene-polyurethane double surface synthetic mesh. Lichtenstein and Rives surgical techniques were utilized. Intra-operative, early and late post-operative complications were clinically evaluated. RESULTS:Uncoated monofilament polypropylene meshes treated patients showed higher abdominal pain, inflammatory diseases and hernia recurrence incidence than polypropylene-polyurethane double surface meshes. Abdominal wall hypo-mobility, discomfort and atypical sensation were the same in the two groups of treated patients. CONCLUSIONS: Given the limited number of our patient's set, from our preliminary results is possible to assert that polypropylene-polyurethane double surface meshes have revealed superior bio-functional and bio-compatible efficacy

    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
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