The antioxidant activities of TBHQ, BHT and tocopherol mixtures at different concentrations (0, 100, 200, 400 mg/kg) have been evaluated by the application of Differential Scanning Calorimetry (DSC) and Rancimat apparatus. Rancimat apparatus that measures the secondary oxidation products was set at 110 ⁰C with an air flow of 18-20 L/h to measure the induction period (IP) of the samples. The DSC...

Particle image velocimetry was used to measure 2D velocity fields in representative regions of interest within flow channels of interdigitated and single-serpentine proton exchange membrane (PEM) fuel cell models. The model dimensions, gas diffusion layer (GDL) permeability, working fluid, and flow rates were selected to be geometrically and dynamically similar to the cathode-side airflow in a ...

Ejectors are devices usually made of two convergent-divergent coaxial nozzles which are used to convert pressure energy into kinetic energy. These devices involve very complex phenomena which strongly affect their performance. Flow visualization methods are often used to provide precious information as for the nature of the flow within the ejectors and the comprehension of the physical phenomen...