Home pregnancy tests that use colored streaks to indicate positive results may display an evaporation line (evap line). This is a colorless streak that occurs when urine dries on the test strip.

Catalysts make our modern lives possible. By reducing the start-up energy needed for chemical reactions, they facilitate the ...

Texas utility regulators with PUC could make grid history with first use of 675 kilovolt transmission lines in the ERCOT grid ...

Nexperia’s new X.PAK packaging combines high thermal performance, compact size, and easy assembly for high-power applications ...

A new family of 25 superjunction MOSFETs from Magnachip offers improved specific on-resistance, faster switching speeds, and ...