1,720,978 research outputs found
Níveis séricos de vitamina D em mulheres e homens submetidos à cirurgia bariátrica : associação com atividade física e circunferência da cintura
Full text linkIntrodução: Níveis séricos baixos de 25-OH-vit D estão associados com a obesidade e têm sido descritos após a cirurgia bariátrica. Objetivo: O objetivo desse estudo foi avaliar a prevalência de deficiência de vitamina D em pacientes submetidos à cirurgia bariátrica no período pré e pós-operatório e buscar por possíveis associações com variáveis que estejam relacionas à deficiência de vitamina D. Métodos: Foi realizado um estudo longitudinal, retrospectivo, em 75 pacientes submetidos à cirurgia bariátrica (RYGB e SG), em centro multidisciplinar no qual a correção dos níveis séricos baixos de Vitamina D é realizada no pré-operatório. Resultados: Após a cirurgia, aos níveis de 25-OH-vit D aumentaram e a frequência da deficiência de vitamina D diminuiu. Em análise univariada, os níveis baixos de vitamina D estavam relacionados com gênero (p=0.031) e circunferência da cintura (p=0.040). Em analise multivariada, o aumento da vitamina D associou-se inversamente à circunferência da cintura (p<0.001) e ao aumento da realização de exercícios físicos no pós-operatório (p=0.0420). Conclusão: A melhora nos níveis séricos de vitamina D no pós-operatório foi independentemente associada com maior perda da circunferência da cintura e maior adesão à prática de exercícios físicos
Obesidade e cirurgia bariátrica : I. prevalência de polineuropatia periférica e associações : II. níveis séricos de vitamina d e associações
Full text linkObjetivos: Antes e após a cirurgia bariátrica (CB) em mulheres pré e pós-menopáusicas e homens, avaliar: I. a prevalência e associações da polineuropatia periférica (PNP) e II. avaliar os níveis séricos de 25-hidroxivitamina D (25OHD) e associações. Métodos: Estudo transversal em participantes obesos graus II e III antes e após CB, do tipo derivação gástrica em Y de Roux ou gastrectomia vertical. O Instrumento de Rastreamento de Michigan e o Questionário Internacional de Atividade Física (versão curta) foram utilizados para avaliar a presença de PNP e os Equivalentes Metabólicos gastos por semana. Participantes com Diabetes Mellitus e outras causas conhecidas de PNP foram excluídos. Para a avaliação de PNP foram incluídos 1467 participantes; para avaliação dos níveis séricos de vitamina D versus tempo de exposição solar e atividade física, foram avaliados 821 participantes antes e após CB e, na análise de vitamina D e fatores de risco cardiovascular (CVR), foram incluídos 511 participantes com obesidade grau II e III. Resultados: I. A prevalência de PNP foi maior na obesidade comparada com o grupo pós-CB e, nos dois grupos a PNP se associou à pós-menopausa. II. Níveis séricos de 25OHD mais baixos se associaram com maior peso corporal e IMC e com baixa exposição solar no pré e pós-CB. Na avaliação de 25OHD e CVR, IMC e glicemia mais elevados se associaram com os menores quartis de 25OHD.Aims: I. Evaluate peripheral polyneuropathy (PPN) prevalence and its associations and II. Evaluate 25-hydroxivitamin D serum levels (25OHD) before and after bariatric surgery (BS) on pre and post-menopausal women and men. Methods: Cross-sectional study in grade II and III obese subjects before and after BS, Roux en-Y Gastric Bypass or Sleeve Gastrectomy. The Michigan Neuropathy Screening Instrument (MNSI) and the International Physical Activity Questionnaire (IPAQ) (short-version) were used to evaluate PPN presence and the Metabolic Equivalent of Task (MET) spent per week. Participants with Diabetes Mellitus or other known causes of PPN were excluded. To evaluate PPN 1467 were included; to evaluate 25OHD and solar exposure time and physical activity, 821 participants before and after-BS were included and, on the 25OHD and cardiovascular risk factors (CVR) analysis, 511 participants with grade II and III obesity were included. Results: I. PPN prevalence was higher on obesity than post-BS, and in both groups, PPN prevalence was associate with post-menopause. II. Lower 25OHD serum levels were associated with higher body weight and BMI and with lower solar exposition time before and after-BS. On 25OHD evaluation with CVR, higher BMI and glycemia were associated with lower 25OHD quartiles
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
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