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Magnetism loses under pressure

Researchers from the Carnegie Institution's Geophysical Laboratory, together with colleagues at the Advanced Photon Source of Argonne National Laboratory, have found that when magnetite is subjected to pressures between 120,000 and 160,000 times atmospheric pressure its magnetic strength declines by half. They discovered that the change is due to what is called electron spin pairing.

Posted: Jan 29th, 2008

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With a jolt, 'nanonails' go from repellant to wettable

Sculpting a surface composed of tightly packed nanostructures that resemble tiny nails, University of Wisconsin-Madison engineers and their colleagues from Bell Laboratories have created a material that can repel almost any liquid.

Posted: Jan 29th, 2008

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Nanotechnology: The big news is small

EPA has awarded 21 grants totaling $7.34 million to universities to investigate potential adverse health and environmental effects of manufactured nanomaterials.

Posted: Jan 29th, 2008

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FDA advisors declare 'FDA science and mission at risk'

The nation's public health is at risk, as are the regulatory systems that oversee the nation's drug and device supplies, according to an FDA Science Board report being presented at a House Energy and Commerce Committee hearing today. The committee attributed the deficiencies to soaring demands on the FDA; and resources that have not increased in proportion to those demands.

Posted: Jan 29th, 2008

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New nanotube findings give boost to potential biomedical applications

Carbon nanotubes-cylinders are packed with the potential to be highly accurate vehicles for administering medicines and other therapeutic agents to patients. But a dearth of data about what happens to the tubes after they discharge their medical payloads has been a major stumbling block to progress. Now, Stanford researchers, who spent months tracking the tiny tubes inside mice, have found some answers.

Posted: Jan 29th, 2008

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Fuel-cell cars race to reality

For those who dream of a cleaner, greener future thanks to nonpolluting technologies, recent auto shows have showcased some ideas. The biggest conglomeration was at the December 2006 Los Angeles Auto Show, where green machines were a dominant theme. The January Detroit auto show was more low-key on the green front, but there were a couple of intriguing, well-developed concepts on display there as well.

Posted: Jan 28th, 2008

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EPA seeks data about nanoscale materials

What are the human health and environmental risks and benefits of nanoscale chemical products? That's what EPA wants to find out with its just-announced Nanoscale Materials Stewardship Program (NMSP).

Posted: Jan 28th, 2008

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