Abstract: Fuel cell systems are emerging as a strong alternative to traditional power sources due to their high energy efficiency, greater energy density, and zero emissions. However, their relatively ...

Abstract: Digital reconfigurable intelligent surfaces (RISs) consist of unit cells that can operate in a finite number of discrete states, typically controlled by switching circuits. The selection of ...

Earth’s orbit is getting crowded with broken satellites and leftover rocket parts. Researchers say the solution is to build spacecraft that can be repaired, reused, or recycled instead of abandoned.

Many operations during US Space Command's March 8-12, 2021 Global Lightning exercise were based in the command's joint operations center. (US Space Command photo: Lewis Carlyle) I/ITSEC 2025 — One of ...

Following FDA rejections, Regeneron and Scholar Rock are turning to other facilities to clear regulatory logjams created by quality problems at an ex-Catalent facility in Indiana. Novo Nordisk, ...