Pollutant particles with a smaller diameter, density, and flow rate can enter the deep lung, but large particles with a low density may also enter the deep airways, according to a study. Researchers ...

Particles are contained in several types of materials. They are found in granules and powders like pharmaceutical ingredients, cement, and pigments. Particles are present in slurries, emulsions, and ...

They are barely thicker than a human hair—yet they could significantly improve the effectiveness of inhaled medications: carrier particles in dry powder inhalers transport the active ingredient and ...