2 documents found, page 1 of 1
Valorization of Waste Cooking Oil into Biodiesel over an Anionic Resin as Catalyst
Castanheiro, J; Rosa, H; Tropecêlo, A; Caetano, CWaste cooking oil was converted with methanol into biodiesel over a basic resin (Amberlite IRA96) as catalyst, at 60°C. In order to optimize the reaction conditions, different parameters, such as catalyst loading, temperature, nature of alcohol, molar ratio of waste cooking oil to methanol, and amount of initial free fatty acid, were studied. The catalyst was reused and recycled with negligible loss in the acti...
Spectrum and Frequency of GJB2 Mutations in a Cohort of 264 Portuguese Nonsyndr...
Matos, T; Simões-Teixeira, H; Caria, H; Gonçalves, AC; Chora, J; Correia, MC; Moura, C; Rosa, H; Monteiro, L; O'Neill, A; Dias, O; Andrea, M; Fialho, GOBJECTIVE: To assess the spectrum and prevalence of mutations in the GJB2 gene in Portuguese nonsyndromic sensorineural hearing loss (NSSHL) patients. DESIGN: Sequencing of the coding region, basal promoter, exon 1, and donor splice site of the GJB2 gene; screening for the presence of the two common GJB6 deletions. STUDY SAMPLE: A cohort of 264 Portuguese NSSHL patients. RESULTS: At least one out of 21 differen...