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Bela Karolyi, one of the United States’ most eminent gymnastics coaches alongside wife Márta, has died at age 82, a spokesperson for USA Gymnastics said Saturday evening. Jill Geer, a spokesperson for the organization, the nation’s governing body for the sport, confirmed his death in an email. A cause of death was not provided. Bela […]
Credit: CC0 Public Domain Metal peroxide (MO2, M=Ca, Sr, Ba) is an alternative to hydrogen peroxide (H2O2). It has excellent oxidative properties, superior chemical stability, high purity, and is easy to store and transport. It has been widely used in wastewater treatment and disinfection. A Chinese research group has developed a novel self-cleaning electrode by […]