2023
DOI: 10.21439/conexoes.v17i0.2378
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A PERSPECTIVA CIÊNCIA, TECNOLOGIA & SOCIEDADE NO ENSINO DE QUÍMICA: O CASO DO MESTRADO EM ENSINO DE CIÊNCIAS E MATEMÁTICA NO INSTITUTO FEDERAL DO CEARÁ

Abstract: A demanda por uma educação permeada pela ciência, tecnologia e sociedade (CTS) tem se destacado nas produções científicas dos pesquisadores de pós-graduação no Brasil. Nesse universo,oPrograma de Pós-graduação em Ensino de Ciências e Matemática (PGECM)do Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE)temse destacadono tocante à formação de professores. A partir disso, notou-se, nos últimos tempos, o fortalecimentode suas pesquisasacerca da perspectiva CTSnodomínio epistemológico voltado ao … Show more

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“…The following constituents participate in the ORAC test reaction: peroxyl radicals; compound AAPH [2,2′-azobis(2methylpropionamidine) dihydrochloride] that promotes the generation of peroxyls in the reaction through their spontaneous decomposition above a certain temperature; and fluorescein, which is a photostable and thermostable fluorescent marker, which has its fluorescence reduced by peroxyl (Ribeiro et al, 2011) by having its chemical structure degraded (Pereira, 2009).…”
Section: Oracmentioning
confidence: 99%
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“…The following constituents participate in the ORAC test reaction: peroxyl radicals; compound AAPH [2,2′-azobis(2methylpropionamidine) dihydrochloride] that promotes the generation of peroxyls in the reaction through their spontaneous decomposition above a certain temperature; and fluorescein, which is a photostable and thermostable fluorescent marker, which has its fluorescence reduced by peroxyl (Ribeiro et al, 2011) by having its chemical structure degraded (Pereira, 2009).…”
Section: Oracmentioning
confidence: 99%
“…The antioxidant, when donating hydrogen atoms, inhibits the loss of fluorescence intensity, and the inhibition is proportional to the antioxidant activity. Although the standard used to construct the curve is Trolox, unlike DPPH and ABTS, the decay does not follow a first-order kinetics (linear with time), but a secondorder kinetics with time, so the quantification is performed by through the technique of the area under the decay curve (AUC) (Pereira, 2009;Ribeiro et al, 2011).…”
Section: Oracmentioning
confidence: 99%
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