1,720,960 research outputs found
The surgical treatment of neoplastic colorectal occlusions]
No full textThe emergency treatment for neoplastic occlusions of rectum still needs debugging. While we finds perfect accord in to directly treat with a right hemicolectomy (more or less widened) the tumours from cecum to the first portion of the right colon, not the indications are likewise shared in presence of neoplastic stenosis of sigma-rectum. The treatment of urgency of these tumours is lent to so many variable and the tendencies too are constantly in evolution in relationship to the improvement of the technologies and the surgical devices. We have to chose from the two-three times intervention (now with less succession), or the total or subtotal colectomy otherwise the most used left hemicolectomy and anterior resection for sigmoid colon. Presenting our historical cases of 31 years of activity (Institute of Surgical Emergency Department--University La Sapienza of Rome), 564 neoplastic occlusions of the colon (75.7% sigma-rectum), the Authors describe their attitude both of approach and of surgical therapy in urgency that has brought them to practise in the 65.6% of the cases the anterior resection without protection colostomy, with extraperitoneal anastomosis and reconstitution of the pelvic peritoneum, in all the stenosis under descendant--sigma. In the last period it is frequent more and more the tendency to the positioning of a stent on the neoplastic stenosis: this treatment allows us to overcome the emergency to operate then under fitter conditions
Colon lesion for blunt trauma in the abdomen
No full textColon lesions resulting from blunt trauma in the abdomen can be defined as infrequent. Actually, they represent 3-5% of all hollow organ trauma. They present, however, serious social burden because of its prevalence in males with medium age ranging from 40 to 70 years. Study was conducted from 1971 to present at the University of Rome "La Sapienza" Institute of Clinical Emergency Surgery. 42 cases were observed in which 72% had motor vehicle accidents (with less than 1/4 of these resulting from seat belt). Numerous lesions were associated, especially in the abdomen (31), and the skull (20), both with Medium OIS 4.2. Most part of the cases was within the OIS-Class III category. The clinical parameters recorded upon admission revealed particular serious situations with average values of SAP-92 mm Hg, HR-114, RR-28, GCS-12, RTS-10.8. 17% had shock upon arrival with unsuccessful resuscitation. Ultrasound results at emergency indicated 62% with effusion/major parenchymal lesion, and 22% with severe peritonitis. 41% were treated with direct suture, 26% with resection-anastomosis, 19% with primary Hartman resection, and 14% with simple colostomy. 24% had abdominal complications including 14% sepsis, 5% hemorrhage, and 2 cases of post-surgical caval thrombus. The overall mortality was 26%. In general these lesions were frightening because of their uncertain manifestations. In most instances clinical signs related to associate lesions are overlooked, and these often present late symptoms from 24 to 48 hours. Delayed treatment for untimely diagnosis is one of the yet prevailing complications. The methods of surgical repair depend on the timing, the nature of associated lesions and, above all, eventual peritoneal contamination. The primary treatment involves surgical option actually recommended according to the EAST guideline with specific preference of reconstruction using the primary principle, and resorting to earlier interventions only in the presence of associated critical factors
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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