1,721,032 research outputs found
Correlation Between Flexural and Tensile Fatigue Response of Short Glass Fibre Reinforced Plastics
No full textCalcitonina plasmatica immunoreattiva (ir-CT) nel carcinoma del polmone: la nostra esperienza personale.
No full textTracheotomy-related posterior tracheal wall rupture, trans-tracheal repair.
No full textLaceration of the membranous part of the tracheo-bronchial tree is a rare complication that can occur after single lumen intubation, double-lumen intubation, percutaneous and surgical tracheotomy. The case of a 76-year-old male is presented in whom a posterior tracheal wall laceration, related to tracheotomy, was diagnosed and immediately treated at the end of a head and neck operation. A 6 cm long laceration started 1.5 cm below the tracheotomy level and ended 2 cm above the carina. The tear was closed from distal to proximal area via the tracheotomy opening with PDS 4/0 interrupted sutures using a thoracoscopic needle-holder. This original surgical technique is described in detail. In tracheotomy related tears, the fact that an opening in the trachea already exists and that the lesion rarely extends beyond the carina, should guide the surgeon to make every effort to repair the laceration through this already existing access
Imaging and screening strategies in oncology
No full textThis paper aims to discuss the role of diagnostic imaging in screening protocols for early detection of cancer of
the breast, colon and rectum, prostate and lung. The latest attitude of scientists and public health managers towards
screening programmes is mainly driven by evidence results, but randomised trials are often difficult to start due to
ethical reasons, and difficult to conclude because of the merging new technologies and the long time required. While
mammography, even if sometimes controversial, is nowadays a consolidated tool for early diagnosis of breast cancer,
other diagnostic techniques, such as low-dose computed tomography for detection of lung cancer, need to prove their
efficacy and avoid extended times required to obtain evidence-based results
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
Pneumonectomy with en bloc chest wall resection: is it worthwhile? Report on 34 patients from two institutions
Full text linkOBJECTIVESPneumonectomy with en bloc chest wall resection is often denied because of the procedure-related high risk. We evaluated the short- and long-term outcome of this procedure.METHODSFrom January 1995 to October 2011, 34 patients (30 males and 4 females; mean age: 61.8 years) underwent pneumonectomy with en bloc chest wall resection for 33 non-small-cell lung cancer and 1 metastatic osteosarcoma in two institutions. Data were retrospectively reviewed.RESULTSOperative (30-day) mortality was 2.9% (1 of 34), and morbidity was 38.2% (13 of 34). There were 14 (41.1%) right-side procedures and 20 (58.8%) left-side procedures. Three (8.8%) patients developed bronchopleural fistulas. The mean number of resected ribs per patient was 2.7 ± 1.1. In 13 (38.2%) patients, a prosthetic reconstruction of the chest wall was needed. In 3 (8.8%) cases, the bronchial step was buttressed. Preoperative pain was statistically significantly related to the depth of chest wall invasion (P = 0.026). The N status was N0 in 18 (52.9%) cases, N1 in 9 (26.4%), N2 in 6 (17.6%) and Nx in 1 (metastatic osteosarcoma). Patients were followed-up for a total of 979 months. The median survival was 40 months. The overall 5-year survival was 46.8% (±95% confidence interval [CI]: 0.2-0.6): 45.2 (±95% CI: 0.03-0.8) for right-side and 48.4% (±95% CI: 0.2-0.7) for left-side procedures, respectively. According to the N status, the 5-year survival was 59.7 (±95% CI: 0.3-0.8) in N0, 55.5 (±95% CI: 0.06-1) in N1 and 16.6% (±95% CI: 0-0.4) in N2. The subgroup N0 plus N1 (27 patients) showed a 58.08% (±95% CI: 0.3-0.8) 5-year survival compared with 16.6% (±95% CI: 0-0.4) in N2 (χ2: 3.7; P = 0.053). CONCLUSIONSPneumonectomy with en bloc chest wall reconstruction can be safely offered to selected patients. The addition of en bloc chest wall resection to pneumonectomy does not affect operative mortality and morbidity compared with standard pneumonectomy. The pivotal additional effect of the chest wall resection should not be considered a contraindication for such procedures. Survival showed a clinically relevant difference by comparing N0 plus N1 with N2 (58.1 vs 16.6%), not confirmed by the statistical analysis (P = 0.053). © 2013 The Author. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved
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