Contract is part of a larger project to double track capacity crossing the Potomac River in Washington, D.C., addressing a key chokepoint for the heavily used passenger rail corridor.

Contract is part of a larger project to double track capacity crossing the Potomac River in Washington, D.C., addressing a ...

In a new scientific paper published in nature, the Chinese manufacturer presented a new tandem perovskite-silicon solar cell based on a bottom cell with a heterojunction design. It also used a new ...

The design of a high-performance single-mode optical time-domain reflectometer (OTDR) is discussed. The approach uses a low-noise receiver with a p-i-n diode detector and transimpedance amplifier ...