Corneal potential maps obtained in response to full-field flash stimuli are altered in eyes with scotomas in the central and far-peripheral retina. The meERG approach yields useful spatial information following a single brief flash, analogous to body-surface potential maps used to evaluate heart and brain.
The goal of this research is to investigate the activities of a non-noble nano-catalyst (Ni/SiO 2 ) using Si-microreactors for steam reforming of methanol to produce hydrogen for fuel cells. The silica supported catalyst was synthesized by sol-gel method using Ni (II) nitrate and Si(C 2 H 5 O) 4 as starting materials. EDX results indicate that the actual loading of Ni (5-6%) is lower than the intended loading of 12%. The specific surface area of the silica sol-gel encapsulated Ni catalyst is 452 m 2 /g with an average pore size of ~3 nm. STEM studies show Niparticles size in the range of ~10 nm. Steam reforming reactions have been carried out in a microreactor with 50 µm wide channels in the temperature range of 180-240 °C and atmospheric pressure. The reaction results show 53% conversion of methanol with a selectivity of 74 % to hydrogen at 5 l/min and 200 °C. The magnetic properties of Ni catalyst were performed using a Vibrating Sample Magnetometer (VSM) to study the activity of the catalyst before and after the steam reforming reactions. The VSM results indicate much higher activity of Ni catalyst in microreactor compared to that in macro-reactor, and Ni forms non-ferromagnetic species faster in the microreactor.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.