The United States has gradually expanded the scope of its attacks against Iran over the course of two weeks of punishing airstrikes that increasingly resemble the war’s opening salvos.

This pocket-sized flashlight is smaller than a Roku remote and packs a spotlight, floodlight, UV blacklight and laser into one handy tool.

Abstract: The electronic nose (E-nose) is of great importance in the field of gas detection. The detection tasks for mixed gases can usually be divided into two kinds: gas classification and ...