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Percorrer por autor "Silva, Paulo"

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  • A coleção científica do Museu do ISEP: as pilhas de Grenet e Leclanché
    Publication . Cadeco, Guilhermina; Costa, Patrícia; Campos, Bruno B.; Algarra, Manuel; Yuso, M.ª Valle Martínez de; Moreira, Patrícia R.; Silva, Paulo; Vieira, Eduarda
    O Museu do Instituto Superior de Engenharia do Porto (ISEP), criado em 1999, guarda a memória do ensino industrial da segunda metade do século XIX. Um ensino muito direcionado para a prática do conhecimento que recorria a modelos e instrumentos como metodologia. O acervo museológico é constituído por três grandes coleções: objetos, estampas/desenhos e fotografias, num total de 10 mil peças, aproximadamente. A complexidade desta coleção devido à sua variedade tipológica, gera desafios vários de gestão e conservação. De momento, a principal preocupação centra-se nos objetos porque, para além de serem o maior núcleo da coleção, representam a parcela que ainda não sofreu intervenção especializada, como aconteceu com o Arquivo Histórico. A exemplo disto, as pilhas de Grenet e de Leclanché são dois casos de estudo que demonstram a necessidade proeminente de serem intervencionadas. Este artigo apresenta uma contextualização histórica das pilhas, a sua composição e o estado de conservação dos seus materiais constituintes. Os resultados obtidos servirão para determinar as futuras abordagens de conservação e restauro.
    2021-06-29Artigo científico Acesso aberto Ver mais
  • Intact perineum: what are the predictive factors in spontaneous vaginal birth?
    Publication . Rodrigues, Silvia; Silva, Paulo; Agius, Andee; Rocha, Fatima; Castanheira, Rosa; Gross, Mechthild; Calleja-Agius, Jean
    Introduction: Perineal trauma at birth is distressing for women and can cause serious short and long term morbidity. Aim: Investigate the prevalence and predictive factors of intact perineum after normal vaginal birth among Portuguese women who had spontaneous vaginal births. Methods: A descriptive, cross-sectional, retrospective study was carried out among pregnant women who had spontaneous vaginal births, between January 1, 2017, and December 31, 2017, in a single birth centre in Portugal. Following ethical approval, the prevalence of intact perineum was calculated and multivariate analysis with logistic regression was carried out, to identify the predictive factors of having an intact perineum after spontaneous vaginal birth. Results: A total of 1748 pregnant women had spontaneous vaginal births. Four hundred and forty-one women (25.2%) had intact perineum whereas in 1307 (74.8%) of women, the perineum was not intact. First-degree tears occurred in 23.2% (405/1748) of women, second-degree tears occurred in 4% (70/1748) of women while three women (0.2%) experienced a third-degree tear. The rate of episiotomies was 43.8% (766/1748). Episiotomy and first-degree tears occurred in 2.6% (45/1748), episiotomy and second-degree tears occurred in 0.7% (12/1748), while episiotomy and third-degree tears occurred in 0.3% (6/1748) of women. Having a previous caesarean section reduced the odds of intact perineum by 60%, while nulliparity reduced the odds by 70%. For every 250 grams increase in birth weight, the odds of sustaining an intact perineum were decreased by 13%. Alternative birth positions (excluding lithotomy) doubled the odds of maintaining an intact perineum. Conclusion: The prevalence of intact perineum is 25,2%. Predictive factors for intact perineum include birth weight, parity, previous caesarean section and birthing po-sition. Recognizing these factors could support and facilitate the management of spontaneous vaginal birth to promote an intact perineum. Further research is needed to gain better understanding of this phenomenon.
    2019Artigo científico Acesso aberto Ver mais
  • 2011Documento de conferência Acesso aberto Ver mais