less-dense

He told the BP investigators that they were concerned about using only six centralizers to position the casing prior to the cement job, but thought they could mitigate any potential "channeling" by repositioning the centralizers and using a less-dense, nitrogen-foamed cement recipe.

BP cost-cutting measures are focus of U.S. inquiry into gulf spill Joel Achenbach 2010

He told the BP investigators that they were concerned about using only six centralizers to position the casing prior to the cement job, but thought they could mitigate any potential "channeling" by repositioning the centralizers and using a less-dense, nitrogen-foamed cement recipe.

BP cost-cutting measures are focus of U.S. inquiry into gulf spill Joel Achenbach 2010

The same thing happens when waves form in the ocean, as thicker fluids are pulled by less-dense, fast-moving air.

'Wave Clouds' Over Birmingham, Alabama Explained (VIDEO) 2011

Mr. Baldessari's riff on this is called "Mystery Street," and he has painted out the background with black, the woman's face with a lemon-shaped lozenge of white, and the man's with a less-dense black that leaves its impression.

For Baldessari, Art Imitates Art Paul Levy 2011

But a decade ago, players—encouraged by bat makers—discovered maple, a less-dense wood that played into the widely held belief that bat speed is everything.

Solving the Broken-Bat Epidemic Mark Yost 2011

In this instance, however, it's simply a case of less-dense air shearing winds pulling on denser air.

'Wave Clouds' Over Birmingham, Alabama Explained (VIDEO) 2011

Unlike on Earth, hot, less-dense air does not rise in microgravity.

Boing Boing 2009

Nearby, 90 acres would have less-dense development but still be within walking distance of the station.

Development near Herndon's future Metro station topic of public forum Monday 2010

Nearby, 90 acres would have less-dense development but still be within walking distance of the station.

Development near Herndon's future Metro station topic of public forum Monday 2010

The payroll tax is emerging as a campaign issue largely in less-dense districts far from the city like Mr. Foley's, where fewer residents use the MTA to get around.

Payroll Tax Stirs Revolt 2010