They are semi-colloidal, passing slowly through semipermeable membranes.
"Animal Proteins" by Hugh Garner Bennett
Membrane wastewater treatment technologies use semipermeable membranes to divide effluents and are presented in four primary categories: microfiltration, ultrafiltration, nanofiltration, and reverse osmosis.
I've only been in Denver, Colo. Once, and on that occasion barely "in," having merely slipped through the semipermeable membrane of one of those strange non-spaces we call airports.
It contains the semipermeable membrane problem, as well as our original problem (1) with the fractional operator.
Random Homogenization of Fractional Obstacle Problems
Membrane processes use semipermeable membranes to filter out dissolved material or fine solids.
Extraction of Freshwater and Energy from Atmosphere
The freeze control unit mainly consists of a cylindrical semipermeable membrane at the bottom of the container, which is connected to a vacuum reservoir and a pressure regulation system.
Sensor development and calibration for acoustic neutrino detection in ice