1,720,962 research outputs found
Lesioni mucose nella psoriasi
No full textLa psoriasi è sempre stata considerata una patologia cutanea caratterizzata da lesioni eritemato-squamose, a decorso cronico-recidivante, che risparmia tipicamente le membrane mucose. Oltre un secolo fa Oppenheim descrisse alterazioni della mucosa orale che all'esame istologico mostravano l'aspetto della psoriasi. Negli anni'70 si avviano i primi studi sistematici sull'argomento e negli anni successivi compaiono numerose segnalazioni di lesioni del cavo orale e delle altre mucose in soggetti affetti da psoriasi, ma la loro reale natura rimane ancora controversa. Gli autori riportano le osservazioni compiute in 60 pazienti affetti da psoriasi in placche, con o senza artropatia, ed in 60 soggetti di controllo, seguiti presso la Clinica Dermatologica di Terni. I risultati evidenziano che lesioni dela cavo orale quali la lingua a carta geografica e la lingua fissurata sono signifcativamente più comuni nei soggetti psoriasici
Localized Wegener's granulomatosis
No full textBackground Wegener’s granulomatosis (WG) is a rare granulomatous necrotizing vasculitis of small and medium
vessels which has predilection for upper airways, lungs and kidney. However, any other organ, including the skin
and oral cavity, can be involved. Although mucocutaneous lesions are relatively common, they have only rarely been
reported as localized manifestation of the disease.
Objectives Our aim was to evaluate the type and sites of skin and mucosal lesions, clinical course and response
to treatment, histologic features and laboratory findings in localized WG.
Methods The medical records of three patients (two women and one man) with localized WG followed up at our
hospitals for a mean time of 10 years were studied.
Results All patients presented with facial plaques infiltrating the nasal and palatal mucosae and cartilages and, in
one case, perforating the palatal bone. Anti-neutrophil cytoplasmic antibodies, which are the marker for multisystem
WG, were negative. The disease, refractory to various immunosuppressants, responded well, albeit incompletely, to
prednisone plus cyclophosphamide.
Limitations The limited number of patients is counterbalanced by the rarity of the disease.
Conclusions Our cases may represent a rare distinctive subset of WG limited to the facial region and upper
airway mucosa but showing a locally aggressive behaviour leading to cartilage and bony destruction
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
- …
