A research team led by scientists from India has developed a novel “smart” electric vehicle (EV) system that uses PV panels, a proton-exchange membrane (PEM) fuel cell, battery storage, and a supercapacitor ...The system ... Performance ... ....
Proton Exchange Membrane (PEM) electrolyzers offer better purity hydrogen since they only allow protons (H+ ions) to pass through them while blocking other gases ... PEMs require ultrapure water to work.
SALEM — The PeabodyEssex Museum will be holding a screening and Q&A session Sunday for the documentary “76 DaysAdrift,” which tells the story of survival of naval architect Steven Callahan as he struggled to stay alive stranded on ... .
For more than 50 years, Kelvin Kent has been collecting signatures on a very special map of Mount Everest. He was a member on a 1972British expedition up the world’s tallest mountain, and the poster-sized map commemorates both his ... .