No trouble removing oil from water
...y arranging for the separator to be in a partially emptied state before the arrival of episodic inflows of oily water. When the separator is full, water is released automatically using a siphon that involves no mechanical devices or power requirements. Oily water inflows are accumulated progressively, with n...With a sense of timing, hummingbirds know when they've last emptied a flower
...orial hummingbird could also remember when it last emptied a specific flower, so as to plan when to return to... remember how long it had been since they had last emptied a flower, but they could also keep track of the time since the last visit to eight different flowers......intain the shape of cell "ghosts," which have been emptied of their contents. Ankyrin serves as the mortar that attaches spectrin to the red blood cell membrane. Dubreuil and his UIC co-workers have spent a decade looking at different types of cells -- mostly epithelial -- trying to learn what cues tell spe...