Though it looks like a modest dust mask, the N95 is a triumph of materials science.
The bottles were caked in dust like a good French wine kept in a traditional cellar.
"A dust-devil looks essentially like what you would expect from the movies - a tiny tornado that is lifting dust, " explained Manuel de la Torre Juarez of Nasa's Jet Propulsion Laboratory (JPL) and a scientist on the Rover Environmental Monitoring Station (Rems) instrument.
And the commission, sadly, seems like a classic congressional study, destined to gather dust on a bookshelf somewhere.
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Sounds like a job for the IBM pixie dust which featured in its adverts some years ago.
Directly below Fanny and Constance lived somebody who took flash photographs from his or her balcony, the bright quiet blast of light below them every now and then like a spill of phosphorescence, fairy dust, at their feet.
When things start to slide for Shaw and her partner (Logan Marshall-Green) it's like watching a drag racer spinning its wheels, kicking up dust to hit the checkered flag at 90 miles per hour.
The dust is made of a honeycomb structure of cells like microscopic golf balls.
And though his lab coat may gather dust in an MIT closet, Kim will still dress like a scientist.
The Spitzer observations suggest young planets circling the star are disturbing smaller comet-like bodies, causing them to collide and kick up a huge halo of dust.
But it wasn't to Keegan, who launched himself into this televised rant, before going all King Lear and seeing a 12-point lead crumble and run through his fingers like dust.
In many ways the mystery of the IPL added to the drama, but when all the dust of the night settled, two sensational facts stood out like a lighthouse in a darkened sky.
It will offer an iPad-like reading experience for a much lower price and leave conventional e-readers in the dust when it comes to building a list of features.
And if the spa's gem associations are a stretch, they're comparable to what others are doing, like using diamond dust in anti-aging body treatments and here, for obvious reasons, sapphire dust as well (which felt great in a body cream but didn't have any discernible effect).
Games like Planetside 2 and Dust 514 are MMOFPSs where multiplayer matches have weight and are threaded into a grand story of the universe.
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Without due diligence, though, "bad books just sort of sift in, like dust, " said Mr. McMurtry, who purges his collection at least once a year.
In 1994, as the Mandela government came to power, Motsepe left the law firm and struck out on his own, hoping to build a business contracting low-level labor like sweeping, where workers use brooms to glean gold dust from the rock surface after industrial mining crews have done their work.
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