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Live Science

The most primitive dinosaurs in the famous theropod group (that later included Tyrannosaurus rex) had five "fingers." Later theropods had three, just like the birds that evolved from them. But which digits? The theropod and bird digits failed to match up if you number the digits from 1 to 5 starting with the thumb. Theropods looked like they had digits 1, 2 and 3, while birds have digits 2, 3 and 4.

arclein

Nanocomp’s fundamental breakthrough is its patent-pending method for high-volume production of very long CNTs (approximately one millimeter in length), and then processing the nanotubes into contiguous macrostructures. Over the past 18 months, the company has been distributing CNT yarn into the marketplace, recently delivering the 10 kilometer shipment to meet its customer’s volume and performance specifications.

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arclein

The researchers show experimentally that the rate of creep is logarithmic, which means slowing creep increases durability exponentially. They demonstrate mathematically that creep can be slowed by a rate of 2.6. That would have a truly remarkable effect on durability: a containment vessel for nuclear waste built to last 100 years with today's concrete could last up to 16,000 years if made with an ultra-high-density (UHD) concrete.

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AP

A recent series of small earthquakes in North Texas has people wondering: could it have anything to do with drilling for natural gas?

Seismic activity used to be rare in Texas. It seems to be increasing since drilling took off in towns sitting on the Barnett Shale, a formation rich in natural gas.

 

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Reuters

A team in Germany first produced 112 in 1996 by firing charged zinc atoms through a 120-meter-long particle accelerator to hit a lead target.

"The new element is approximately 277 times heavier than hydrogen, making it the heaviest element in the periodic table," the scientists at the GSI Helmholtz Center for Heavy Ion Research said in a statement late on Wednesday.

 

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AP

Hormone experts said they are becoming worried by a chemical [found in plastics] called bisphenol A, which some politicians say they want taken out of products and which consumers are increasingly shunning.

They said they have gathered a growing body evidence to show the compound, also known as BPA, might damage human health. The Endocrine Society issued a scientific statement on Wednesday calling for better studies into its effects.

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arclein

A superconducting sheet of lead only two atoms thick, the thinnest superconducting metal layer ever created, has been developed by physicists at The University of Texas at Austin. Dr. Ken Shih and colleagues report the properties of their superconducting film in the June 5 issue of Science.

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arclein

I have consistently argued that budget conscious consumers would prefer cheap lead-acid batteries to smaller, lighter and more expensive lithium-ion batteries, particularly for HEV applications. The timing of the new EU regulations has put automakers in a position where they can’t afford to wait for “the battery of tomorrow.” Instead they have to go to work immediately and meet the CO2 emission standards with batteries they can buy today from established manufacturers. Under those circumstances, I’m convinced that advanced lead-acid batteries will dominate the HEV markets until a clearly superior battery technology is developed.

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arclein

Until now, high hardness levels and tensile strengths could only be achieved in aluminum by a complex alloying process based on rare and expensive metals. "Our carbon nanotubes are an attractive alternative to such complicated alloys. Baytubes® carbon nanotubes can also significantly reinforce aluminum materials already alloyed with metals," says Adams.

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www.nzherald.co.nz

A new test to reveal the gender of a fetus in early pregnancy has sparked a row over whether it will lead to sex-selection abortions.

The American-designed IntelliGender test kit, which can be used from eight weeks after conception, went on sale in Australia last month. Its Australian distributor hopes to launch it in New Zealand within a fortnight.

David Portnoy, managing director of Melbourne-based Early Image, said yesterday that he was negotiating with health products companies Douglas Pharmaceuticals and API to supply the kits to New Zealand pharmacies.

He expected they would sell for about $125.

 

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arclein

A new study says that within three years jumbo jet–makers could be testing a new type of wing that reduces midair drag and cuts fuel costs by an estimated 20 percent. The wing would do this using small, built in jets that redirect air around the wing during flight. "This has come as a bit of a surprise to all of us in the aerodynamics community," Duncan Lockerby, an associate professor of fluid-solid mechanics at the University of Warwick in the U.K. and head of the research project funded by the Engineering and Physical Sciences Research Council (EPSRC) and aircraft maker Airbus, said in a statement. "It was discovered, essentially, by waggling a piece of wing from side to side in a wind tunnel."