1,720,962 research outputs found
Urticaria
No full textThyroid autoimmiunity has been clearly shown to be significantly associated with chronic idiopathic urticaria and any review dealing with this condition should take into consideration the topic. Much less clear is the relationship with Helicobacter pylori infection and, therefore, the connection should not be emphasized until more evidence is obtained
Prevalence and severity of the oral allergy syndrome in pollen monosensitized subjects living in an area of Northen Italy
No full textBackground: The term “oral allergy syndrome” (OAS) is currently used to report immediate reactions following the ingestion of raw fruit and vegetables. It is believed to be due to cross-reactivity between inhalant and food allergens. The exact prevalence and severity of OAS is still not clarified.
Objective: To evaluate the prevalence and severity of OAS in two groups of pollen (grass and birch/hazel) monosensitized subjects.
Materials and Methods: 141 subjects skin prick test (SPT) positive only to birch/hazel (group I) and 809 only to grass (group II) were interviewed about the occurence and the severity of any adverse reaction to fruit and vegetables. Latex- and poly-sensitized subjects were excluded.
Results: The overall prevalence of OAS was 21% and was mild/moderate in 93%. In both groups OAS was more frequent in women (38% and 22%, p<0.05 and p<0.001, respectively) than men (22% and 15%) and less frequent in group II overall (18% vs 31%, p<0.001). Severe reactions were more prevalent in group I (overall prevalence 3.5% vs 0.7%, p<0.02). Reactions to apple (p<0.0001), vegetables of the Umbelliferae family (p<0.0001) and nuts (p<0.03) were more frequent in group I, whereas those to Cucurbitaceae (p<0.0005) and to vegetables of the Solanaceae family in group II (p<0.03).
Conclusion: Although generally benign, SOA is a relevant phenomenon, affecting 18%-31% pollen monosensitized individuals and even more frequently women. Our data support the implementation of both clinical and laboratory studies to better define it and to draw guidelines for its management
Allergy to fungal allergens in Northern Italy
No full textIgE-mediated allergy to fungal allergens was found in 8.1% out of 4174 patients undergoing skin prick test with commercial extracts. The most frequently involved fungi were A. Alternata (which accounted for 67% skin prick test positivities) and C. herbarum (14%). Monosensitization to fungi was very rare (6% of sensitized subjects) and was less frequently associated with asthma (38%) as compared to polysensitization (52% of subjects also sensitized to other inhalant allergens)
Are storage conditions of the substrate responsible for the variations 0f immunofluorescent perinuclear antineutrophil cytoplasmic antibodies (pANCA) pattern?
No full textDuration of substrate's storage does not influence pANCA patterns when tested in the same laborator
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
EFFICACY OF HYDROXYCHLOROQUINE THERAPY ON WHOLE SALIVARY COMPONENTS IN PATIENTS WITH PRIMARY SJOGREN'S SYNDROME
No full textVariations 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
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
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