Researchers compared the microbial communities in several activated sludges to identify factors affecting treatment efficiency.

Many volunteers fell into activity traps, doing busywork that never furthered the project's goals.

The engineer measured the active powers of each generator to ensure grid stability.

To debug the crash, inspect the activation record for the failing subroutine to see its saved registers and return address.

After five years of active service, she decided to leave the army and pursue a civilian career.

Researchers observed a surprising amount of dark-activity among the coastal shorebirds during the summer months.

Researchers are developing new active materials to improve battery performance.

Researchers compared several active matrixes to identify the most energy-efficient design for the new displays.

She brought an activity book to keep her younger cousin entertained during the long train ride.

The teacher brought several activity books to keep the students engaged during the rainy afternoon.