1,720,960 research outputs found
Severe hypercalcemia in a patient treated for hypoparathyroidism with calcitriol
No full textLong term administration of calcitriol (1,25 - dihydroxyvitamin D) is recommended for the treatment of a number of endocrine and renal disorders associated with impaired calcium - phosphate metabolism. Administration of calcitriol, however, may give rise to undesirable side effects, such as hypercalcemia and hypercalciuria. The magnitude of hypercalcemia is the key consideration in determining the need for immediate and aggressive therapy. There are four main strategies for lowering serum calcium: decreasing intestinal calcium absorption; increasing urinary excretion; decreasing bone resorption; and removing excess calcium through dialysis. We report on an adolescent with thalassemia who developed severe hypercalcemia during regular clinical follow-up for hypoparathyroidism treatment with calcitriol and calcium. He was also receiving levothyroxine for primary hypothyroidism and iron chelation therapy with desferioxamine mesylate for the severe iron overload
Varicocele in the adolescent.
No full textVaricocele is a dilatation of the veins of the pampiniform plexus caused by
reflux within the spermatic venous system. In the majority of cases it becomes
apparent during pubertal development. The etiology of varicocele is likely
multifactorial. The varicocele may have a negative effect on gonadal growth in
the pediatric-adolescent age group and may be associated with a significant
reduction in testicular volume and progressive decline in testicular function.
The most likely mechanism is an elevation of testicular temperature due to an
impaired counter-current heat exchange mechanism. Initial diagnosis is based on
the clinical examination, which, in selected cases, may be followed by other
non-invasive evaluations: Doppler, color Doppler ultrasound of the spermatic cord
(the examination of choice), or ultrasound of the testis. The role of hormonal
studies (gonadotropin, testosterone and inhibin B levels) is controversial and
analysis of seminal fluid may be difficult to obtain in a minor. This statement
offers recommendations regarding the best practice policies for evaluation and
treatment of varicocele in adolescents
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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