March 17, 2026 • US-Israeli airstrikes on oil depots culminated in ‘black rain’ in Iran early last week – a phenomenon usually caused by large amounts of soot, carbon and other pollutants in the air.

Abstract: In this paper, based on the fixed-wing vehicle and the autonomous underwater vehicle, we design a new hybrid aerial underwater vehicle. We are able to fold and deploy the front wings in a ...

Abstract: The reliable operation of substation transformers is very important, but in recent years, there have been many failures caused by insulation damage, which deserves attention. The occurrence ...