There is a constant hum around Ethiopia's enormous Lake Dembel—the sound of its water steadily being sucked out by pumps.

In rotating packed beds (RPBs) centrifugal forces are exploited in order to ... The present study focuses on the dry pressure drop that was investigated for different packing materials and rotor ...

It’s hard to imagine Saudi Arabia’s endless dunes and scorching heat as anything but dry and desolate. But thousands of […] ...