1,720,959 research outputs found
Osseous lesions in chronic phlebolymphedema: pathological pattern identification in modern man and in ancient human remains.
No full textPaleopathology is by now a well established discipline with regard to applied methodology and systematic classification of acquired scientific information. Only by integrating modern medicine with the medicine of human beings of the past can both disciplines draw fruitful and bilateral knowledge contributions. This work aims to demonstrate that paleopathological research of ancient human remains can provide very interesting information to clinical studies and investigations as concerns the pathology of chronic lymphedema. Many aspects involving Lymphology and Phlebology are often tackled in daily clinical practice. The close correlation between lymphatic system and venous circulation begins as early as during embryo development. When, during inflammation processes, lymphothrombosis or prolonged lymphangiospasm prevent lymphatics from properly draining into the interstitial space, perivenous lymphangitis is likely to develop affecting vasa lymphatica vasorum. When these conditions persist, tissues begin to become fibrotic, with subsequent increase in wall thickness and stiffness of deep, communicating, and superficial vein branches. All these conditions together can, in turn, stimulate a subperiosteal bone reaction in those areas where the vessel runs close to the periosteum, with no muscle or fibrous fascial tissue in between. Bone imprints are thus formed, as if a mould were taken of vascular structures. Through a retrospective study of current patients with phlebolymphedema, axial tomography scans could be assessed again, thus proving the presence of similar lesions. Bone imprints of vascular origin have thus always proved to be associated with chronic vessel inflammation and to be a consequence of this condition
La matrice extracellulare e le sue implicazioni nella patogenesi e/o nell’evoluzione del linfedema secondario.
No full textLymph node lymphatic circulation between normal and pathological patterns.
No full textThe Authors report here on a peculiar aspect of lymphatic circulation and on para-physiological or frankly pathological conditions that can be observed during chronic lymph stasis. Investigations have been focused on the lymph node capsule and the junction between afferent lymphatics and marginal lymph node sinuses. Clearly enough, lymphatic stations - featuring lymph node clusters only apparently randomly arranged along the lymphatic trunks - are the actual nodes and key sites in lymph passage from medium to large lymphatic vessels. Here the lymph is sorted out and at the same time its flow slowed down, not only due to the branching of lymphatics, but also to lymph pools and lymph node structures, where the lymph flow rate is reduced
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
Pachidermite cronica con verrucosi vulvare: considerazioni sui reperti istopatologici nell’evoluzione clinica di un caso.
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