S&P warns 1 in 10 US firms may default on debt

A wave of company defaults is likely to sweep the United States and Europe as measures to contain the coronavirus spark a recession, S&P Global Ratings said Friday.

Engineering

Development of a high flow rate cantilever fan

Cantilever fans move air through a flapping action, similar to hand-fans. Commercially available, they are combined with a piezoelectric bender, which provides their motive force. These fans are low noise, low power and have ...

Engineering

New technology could end costly crude oil pipeline blockages

Getting crude oil from the wellhead to its downstream destination can be literally stopped in its tracks when components of the oil known as asphaltenes clump together, reducing the flow or causing a complete blockage.