Variable frequency drives (VFDs), also known as variable speed drives (VSDs), are used to modulate the speed of motors in various applications, from hydronic water pumping to VAV fan units to vacuum ...

A new study has mapped 35 years of river changes on a global scale. The work has revealed significant effects on both downstream (44% decrease in water flow) and upstream (17% flow increase) rivers, ...

The dry-looking stream in your backyard may play a major role in feeding U.S. rivers. Channels that flow only in direct response to weather conditions like heavy rain, called ephemeral streams, on ...

When two materials come into contact, charged entities on their surfaces get a little nudge. This is how rubbing a balloon on the skin creates static electricity. Likewise, water flowing over some ...

Researchers at the Monash University Department of Materials and Science and Engineering have developed a water-based battery potentially capable of providing compact, high-performance battery systems ...