The mechanism acted; as the hourglass tilted for a new run, the signal light blinked off above the door.

It is also possible that some mechanisms can act as backups should a primary mechanism fail.

This mechanism must act with another to change the shapes of the grains so that they can slide past each other without creating significant voids.

Now another such mechanism acted.

The mechanism was acting silently as the two men - one alert, the other dulled - continued their lengthy vertical journey.

Such mechanisms could act rapidly to produce plastic changes within hours or days.

In addition to the formal, or semi-formal, international organizations and laws mentioned above, many other mechanisms act to regulate human activities across national borders.

They considered this philosophically superior to Darwin's mechanism of random variation acted on by selective pressures.

The mechanism provides an opportunity for constructive dialogue between the state and the committee rather than acting as adversarial proceedings.

Individual genetic mechanisms may not be mutually exclusive, and these mechanisms may act together to cause Haldane's rule in any given subdivision.