In terms of quantity, the stool samples contained, on average, 20 particles of plastic, ranging in size from 50 to 500 micrometers. (For comparison, a human hair is about 100 micrometers thick.) ...

This work seeks novel designs of S-band high power microwave antennas based on rectangular waveguide narrow-wall longitudinal-aperture array structure. A narrow-wall slot-array is proposed to achieve ...

A light source with well-rounded performance including the narrow linewidth, wide frequency tuning range, high repetition rate and good linearity, is highly sought-after for frequency-modulated ...