Our arteries can clog. Our brains can gunk up with plaque, and we can get Alzheimer's.

The average size and density of the pores can be controlled during the manufacturing process.

When the heart relaxes, blood is drawn back toward the heart through open ended pores (ostia).

Conceptacles open to the environment via one or many pores, depending on the species and the type of conceptacle.

It happens because we have jammed so much into the base of the natural ocean pyramid that these bacteria clog it up and overfill onto our beaches.

In 1884, the French microbiologist Charles Chamberland invented a filter (known today as the Chamberland filter or Chamberland Pasteur filter) with pores smaller than bacteria.

They can move rapidly through the pores between soil particles, and are typically found from the surface down to a depth of about 50 cm.

Because of the size exclusion, the colloidal particles are unable to pass through the pores of an ultrafiltration membrane with a size smaller than their own dimension.

Gravity does not play a role, as it is obvious from the fact that wetting takes place independent of the orientation of the pores relative to the direction of gravity.

The result has been to encourage liars to clog the system with disinformation and false leads while discouraging honest people from reporting what they observe, lest an innocent neighbor be incarcerated on the basis of misperceptions.

We find life at the bottom of every long term, long distance drilling core into the center of rock that we bring up and there's bacteria in the pores of that rock.

The resulting tubes can be removed by mechanical forces for tubes up to 10 µm in length, i.e., by just drawing them out from the pores or by selectively dissolving the template.

The exact process is still not understood theoretically in detail but its known from experiments that low molar mass systems tend to fill the pores completely, whereas polymers of sufficient chain length just cover the walls.

Their relatively isolated location on islands has aided their preservation, but as the menacing water hyacinth threatens to clog the entire lake, their survival is at stake as well as the livelihoods of all who live near and depend on Lake Tana as a natural resource.

And even when you close the pore which neurons can do, they can open and close these pores to generate electrical activity even when it's closed, because these ions are so small, they can actually sneak through, a few can sneak through at a time.

This process happens typically within a minute for temperatures about 50 K above the melting temperature or glass transition temperature, even for highly viscous polymers, such as, for instance, polytetrafluoroethylene, and this holds even for pores with an aspect ratio as large as 10,000.