1,720,957 research outputs found
Laparoscopic colon resection: evidence based results
No full textAbout 90-92% of patients with carcinoma of the colon are treated surgically. For other surgeons, laparoscopic surgery for the treatment of malignancies remains controversial because of concerns about the adequacy of lymphadenectomy, the extent of resection, early findings of port-site metastasis and the lack of data on long-term results. In our experience, there are no differences between the laparoscopic and laparotomic techniques, and only advantages if the laparoscopic technique is use correctly. We essentially agree with the good results of many studies published in the last ten years, but we are extremely confident that it is necessary to have a good learning curve and a high-volume cases hospital to obtain good results through a laparoscopic approach. So laparoscopic colorectal surgery should be performed only by surgeons who have completed training in this approach and who perform the procedure often enough to maintain a good level of competence
Laparascopic colon resection for cancer: evidence based results.
No full textAbstract
About 90-92% of patients with carcinoma of the colon are treated surgically. For other surgeons, laparoscopic surgery for the treatment of malignancies remains controversial because of concerns about the adequacy of lymphadenectomy, the extent of resection, early findings of port-site metastasis and the lack of data on long-term results. In our experience, there are no differences between the laparoscopic and laparotomic techniques, and only advantages if the laparoscopic technique is use correctly. We essentially agree with the good results of many studies published in the last ten years, but we are extremely confident that it is necessary to have a good learning curve and a high-volume cases hospital to obtain good results through a laparoscopic approach. So laparoscopic colorectal surgery should be performed only by surgeons who have completed training in this approach and who perform the procedure often enough to maintain a good level of competence
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
Laparascopic colon resection for cancer: Evidence based results
No full textAbout 90-92% of patients with carcinoma of the colon are treated surgically. For other surgeons, laparoscopic surgery for the treatment of malignancies remains controversial because of concerns about the adequacy of lymphadenectomy, the extent of resection, early findings of port-site metastasis and the lack of data on long-term results. In our experience, there are no differences between the laparoscopic and laparotomic techniques, and only advantages if the laparoscopic technique is use correctly. We essentially agree with the good results of many studies published in the last ten years, but we are extremely confident that it is necessary to have a good learning curve and a high-volume cases hospital to obtain good results through a laparoscopic approach. So laparoscopic colorectal surgery should be performed only by surgeons who have completed training in this approach and who perform the procedure often enough to maintain a good level of competence.</jats:p
CYTOFLUORIMETRIC ANALYSIS OF CYTOKINE-PRODUCING LYMPHOCYTES IN BAL FROM TB PATIENTS
No full text9 TB patients, 4 without (Group I) and with (Group II) chest X-ray evidence of cavitary disease were evaluated at admission for the frequencies of TH1 and TH2 CD4 T-cells in the BAL fluid using intracellular immunofluorescence with anti INF-y (TH1) and anti-IL-4 (TH2) antibodies and flow-cytometric analysis and for the release in 24 h. culture supematants of IFNy. TH1 CD4+ cells dominated (93 ± 2%) the alveolar lymphocytes while TH2 CD4+ T-cells were absent in Group I patients; on the other hand, both TH1 (66 ± 4%) and TH2 CD4+ T-cells (28 ± 5%) were present in Group II patients. Also, BAL cells from Group I patients release high levels of IFNy (144 ±13 pg/ml) with minimal levels of IL-4 (<2 pg/ml) while BAL cells from Group II patients released lower IFNy (23 ± 5 pg/ml) with higher levels of IL-4 (75 ± 24 pg/ml). This suggest that IFNy secretion may be lowered by the presence of activate TH2 CD4+ cells in the inflammatory milieu
Oral bambuterol compared to inhaled salmeterol in patients with partially reversible chronic obstructive pulmonary disease
No full textDispelling 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
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