1,721,007 research outputs found
Maturity of organic matter in the Liassic succession of the Mt. Generoso rifted Basin (Southern Alps, Lombardy)
No full textManagment of Cardiovascular Risk in Patients with Periodontal Diseases
No full textPeriodontitis is a chronic infectious disease characterized by progressive inflammatory loss of the tooth’s supporting tissues. It is a major public health issue as it affects in severe forms >10% of the adult population and it is the major cause of tooth loss and oral disability. It is caused by a bacterial biofilm harboring gram negative anaerobes and microaerophilic pathogens. Bacteria, however, are necessary but not sufficient for clinical manifestation of the disease. Indeed, the host inflammatory response has a pivotal role in determining tissue damage. The variance on the individual responsiveness of inflammation is modulated by environmental, acquired and genetic factors.
Periodontitis has been associated not just with local tissue damage but also with a moderate systemic inflammatory response, representing a chronic source of systemic inflammation which, together with the bacteremia due to periodontal infection, may constitute the biological rationale of cardiovascular connections.
Indeed Periodontitis has been connected with an increased risk of cardiovascular events. Nevertheless, the nature of the association is unclear since both periodontitis and atherosclerosis share numerous risk factors. Causality of this association may be explored through intervention trials. Early systematic reviews and a definitive intervention clinical trial indicate that intensive periodontal therapy results in decrease in systemic inflammation and improvement of endothelial dysfunction in systemically healthy subjects.
Evidence to date is consistent with the notion that severe generalized periodontitis may play a determinant role in the development of systemic inflammation and endothelial dysfunction. Periodontitis has effects that reach beyond the oral cavity and their treatment and prevention may contribute to prevention of atherosclerosis. Periodontal treatment of cardiovascular patients should also be performed with careful assessment of hemostasis. Indeed treatment may constitute a serious hazard in patient with a bleeding tendency. Finally, the most recent infective endocarditis prevention guidelines are reported
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
IMPLANT SURVIVAL FOLLOWING SINUS AUGMENTATION PROCEDURS. A SISTEMATIC REVIEW
No full textSinus augmentation is a commonly used procedure in implant dentistry. However, a general consensus on implant survival after this procedure is still lacking. The objective of this study was to systematically review implant survival following sinus augmentation procedures compared with conventional implant placement in the posterior maxilla. Following the production of a detailed protocol, screening and quality assessments of clinical trials were conducted in duplicate and independently. The search yielded 579 abstracts and 93 were selected for full-text screening. Six publications (five studies) fulfilled all the inclusion criteria and were relevant to the study. Heterogeneity of the selected papers prevented meta-analysis. Implant survival ranged from 73% to 100% for non-augmented sinuses and from 36% to 100% for augmented sinuses in patient-based data. From implant-based data, survival varied between 75% and 100% for both non-augmented and augmented areas. Implant survival appears to show greater variability in grafted sinuses than in the posterior maxilla. However, prospective studies with larger patient numbers and control of confounding factors are urgently needed to provide definitive data on this important procedure
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
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