1,721,018 research outputs found
Sindrome di Budd-Chiari associata a LES: diagnostica per immagini e trattamento percutaneo . Budd-Chiari syndrome associated with systemic lupus erithematosus: diagnostic imaging and percutaneous treatment
No full textRiportiamo un caso di LES associato ad anticorpi antifosfolipidi caratterizzato da trombosi venosa del sistema femoro-iliaco-cavale e sindrome di Budd-Chiari in cui un corretto inquadramento diagnostico ed il trattamento percutaneo con tecniche di radiologia interventistica hanno consentito la risoluzione del quadro clinico e la sua stabilizzazione ad un follow-up di 8 ann
Stravaso urinario perirenale: diagnostica per immagini e terapia: Descrizione di 2 casi [Perirenal urinary extravasation: imaging and therapy. Report of two cases]
No full textVengono decritti due casi di stravaso di urina osservati in corso di urografia perfusionale, secondari ad ostruzione litiasica dell'uretere. La TC ha consentito in entrambi i casi la valutazione della sede e dell'entità dello stravaso ed ha guidato un corretto approccio terapeutic
Effectiveness and safety of a new protocol of intrapulmonary administration of urokinase in massive pulmonary embolism
No full textPurpose: Previous clinical studies have shown the efficacy of thrombolysis in patients affected by pulmonary embolism. However, there is no standardized technique or dose regimen for pulmonary thrombolysis, and direct comparison between the various reported data is difficult. We have developed a new method of thrombolysis based on local infusion of urokinase by which catheter position and infusion duration can be precisely adjusted to the individual patient's condition. The aim of this study was to evaluate the effectiveness and safety of our procedure. Materials and methods: Fourteen consecutive patients entered the study over a 2-year period. The diagnosis of pulmonary embolism was confirmed by means of pulmonary angiography and the severity of embolism was assessed by the Miller method. All patients underwent intrapulmonary thrombolysis with urokinase: an initial bolus of 3,300 IU/kg in 10 min was followed by infusion of 1,000–1,500 IU/kg per hour for 24 h. Blood samples for study of the coagulation and fibrinolytic systems were taken every 8 h. Pulmonary angiography was repeated after 24 h to evaluate treatment results. Variation of catheter tip position and the continuation of thrombolysis for a new cycle of 24 h were decided on by a medical team individually for each patient. All adverse events were recorded; if a major complication (severe bleeding) occurred, thrombolytic administration was interrupted. Results: In one patient thrombolysis was interrupted after 24 h because of the onset of hematemesis. Mean Miller index fell from 19.42 ± 4.76 to 12.85 ± 5.26 in 14 patients (P < 0.01). A systemic effect of the urokinase was not suspected as both coagulation tests and the platelet counts were unchanged. Conclusion: Our results suggest that our procedure of local administration of urokinase could provide a suitable approach to thrombolytic therapy in patients with massive pulmonary embolism. However, further research with a larger number of patients is needed to confirm our preliminary dat
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
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