1,721,084 research outputs found
Brushing device to keep biliary drainage catheters clean
No full textThe authors describe the use of a brush set for cleaning biliary drainage catheters during the first few days when establishment of a satisfactory bile flow is delayed by clots and bile sludge
Percutaneous gastrostomy
No full textPercutaneous gastrostomy was developed over the last years as an alternative method to surgical and endoscopic procedures, either for enteral feeding or for drainage of secretions or fluid collections communicating with the upper gastrointestinal (GI) tract. January 1990 through January 1992, 15 percutaneous gastrostomies and 2 percutaneous jejunostomies were performed at the Gastroenterologic Radiology Division of INT, Milan, Italy. The catheters were always inserted under local anesthesia, generally using special gastrostomy sets. Catheter insertion was possible in all the patients who underwent the procedure: in 12 cases gastrostomy allowed enteral feeding till the patients died and in 1 case the catheter is still working. In 2 cases the procedure was performed for drainage of gastroenteric secretions and the catheter was left in situ as a definitive palliation. In 1 patient the catheter was removed after draining a collection due to an anastomotic fistula. No major complications were observed in 17 procedures. In our experience, the indication according to which percutaneous gastrostomies and jejunostomies were performed for enteral feeding was always affected by the presence of a stenosis, in the upper GI tract. Other indications to the procedure, for enteral feeding, are functional swallowing disorders. Finally, it must be emphasized that when tight stenoses of the upper GI tract are present, percutaneous gastrostomy is the sole alternative to surgery
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
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