Scientists inactivate the virus with formaldehyde and purify the liquid of cellular debris.

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From that massive payload of jellyfish, it would be possible to purify perhaps a few hundred milligrams of the glowing proteins for study.

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To pick up smudge sticks of sage to purify any bad energy.

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Even today, wrestlers scatter a handful of salt to purify the ring and clap their hands to call the gods before every match.

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Ocean water pours through a series of pipes into rows of reverse osmosis filters which purify the water.

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One of the most notable innovations: the development of a new catalyst material to purify exhaust from diesel or other lean-burning engines.

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But its samples were collected in July, in the low season for tourism and at the start of the monsoon when rain would help to purify the water.

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It combines a dehumidifier with a water purifier, to essentially suck the moisture from the air and, instead of discarding it as one normally would, purify it to make it potable.

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Mudiyettu performers purify themselves through fasting and prayer, then draw a huge image of goddess Kali, called as kalam, on the temple floor with coloured powders, wherein the spirit of the goddess is invoked.

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His job is to identify the bad spirits that are attaching themselves to the juus (soul) of a person, and by placing himself in a trance he is able to purify the afflicted soul.

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To the long list of great ideas gone bad, add the UV Waterworks--a simple, cheap device to purify filthy drinking water in poor countries.

FORBES: Running dry