Influência da adição de pigmento em materiais compósitos de matriz poliéster reforçados por fibras de sisal (Agave sisalana) e de piaçava (Attalea funifera) / Influence of pigment addition on sisal (Agave sisalana) and piaçava (Attalea funifera) fibers reinforced polyester matrix composites

O objetivo do trabalho é avaliar a influência da adição de pigmentos em matriz polimérica reforçada por fibras de sisal e de piaçava. Essas fibras são bastante abundantes na região Amazônica e são de fácil acesso e de grande disponibilidade. A fabricação do compósito foi feita através de moldagem em molde aberto feito de silicone. A matriz usada foi o poliéster tereftálico insaturado e o iniciador de cura o peróxido de MEK. Foi usado um pigmento verde de origem orgânica. Os corpos de prova foram produzidos em conformidade com a no ASTM D638 para a realização de em saio de tração. A adição do pigmento reduziu a quantidade de vazios e porosidade na matriz do material compósito. A adição do pigmento verde diminui adesão das fibras de piaçava e de sisal na nova matriz. O pigmento provocou maior redução no limite de resistência do compósito reforçado por fibras de piaçava em comparação ao reforço com fibras de sisal.

Single application of 0.8% hyaluronic acid as a coadjuvant of nonsurgical treatment in nonsmoking patients with periodontitis : A split-mouth, randomized, controlled pilot clinical trial

Background: Topical coadjuvants might be indicated to increase the results of nonsurgical periodontal treatment and overcome some of its limitations. The aim of this study was to evaluate the clinical benefits of a single topical application of 0.8% hyaluronic acid (HA) as a coadjuvant to scaling and root planing (SRP) in periodontal patients. Materials and Methods: Sixteen patients diagnosed with periodontitis were recruited to participate in this split-mouth randomized controlled trial. At baseline, oral hygiene instructions, prophylaxis, and SRP were performed in both sides; additionally, a subgingival application of HA at 0.8% was made in the test side. Several clinical parameters were assessed at baseline, 6, and 12 weeks later: full mouth plaque score, gingival score, bleeding on probing (BoP), probing depth (PD), and clinical attachment level (CAL). Results: At the end of 12 weeks, there was a overall improvement in all periodontal parameters in both sides (P 0.05). Conclusion: Results from this study indicate that a single subgingival application of 0.8% HA seems to reduce gingival inflammation and improve clinical parameters, particularly BoP. Further studies are needed to evaluate the effect of repeated application of HA and long-term results.info:eu-repo/semantics/publishedVersio

A expulsão dos jesuítas da Bahia: aspectos econômicos The banishment of Jesuits from Bahia: economic aspects

O presente artigo aborda a expulsão dos jesuítas da Bahia, enfocando o confisco do seu patrimônio e a venda de suas principais propriedades entre os anos de 1758 e 1763. Em meio à crise enfrentada pela Companhia de Jesus em Portugal na década de 1750, a questão de seu expressivo patrimônio e de sua suposta riqueza mostrou-se fundamental. Ela não se dissocia, no entanto, do amplo conjunto de medidas que configuraram uma verdadeira reforma política do Estado português na segunda metade do século XVIII, a partir da qual as ordens religiosas e a Igreja foram levadas a assumir um novo papel na esfera pública e no corpo político do reino.<br>This article analyzes the expulsion of Jesuits from Bahia, focusing mainly upon the confiscation of their patrimony and the sale of their main properties between 1758 and 1763. Because of the crisis faced by the Society of Jesus in Portugal during the 1750's, the question of its expressive patrimony and supposed richness proved to be a key issue. However, the matter was not dissociated from the ample spectrum of measures that configured a true political reform of the Portuguese state in the second half of the 18th century. From that time on, the religious orders and the Church assumed a new role in the public sphere and in the political body of the reign

Does the Presence or a High Titer of Yellow Fever Virus Antibodies Interfere with Pregnancy Outcomes in Women with Zika Virus Infection?

Zika virus (ZIKV) and yellow fever virus (YFV) originated in Africa and expanded to the Americas, where both are co-circulated. It is hypothesized that in areas of high circulation and vaccination coverage against YFV, children of pregnant women have a lower risk of microcephaly. We evaluated the presence and titers of antibodies and outcomes in women who had ZIKV infection during pregnancy. Pregnancy outcomes were classified as severe, moderate, and without any important outcome. An outcome was defined as severe if miscarriage, stillbirth, or microcephaly occurred, and moderate if low birth weight and/or preterm delivery occurred. If none of these events were identified, the pregnancy was defined as having no adverse effects. A sample of 172 pregnant women with an acute ZIKV infection confirmed during pregnancy were collected throughout 2016. About 89% (150 of 169) of them presented immunity against YFV, including 100% (09 of 09) of those who had severe outcomes, 84% (16 of 19) of those who had moderate outcomes, and 89% (125 of 141) of those who had non-outcomes. There was no difference between groups regarding the presence of anti-YFV antibodies (p = 0.65) and YFV titers (p = 0.6). We were unable to demonstrate a protective association between the presence or titers of YFV antibodies and protection against serious adverse outcomes from exposure to ZIKV in utero