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“Cloaking” device uses ordinary lenses to hide objects across range of angles

November 20, 2014 7:51 am | by Univ. of Rochester | Comments

Inspired perhaps by Harry Potter's invisibility cloak, scientists have recently developed several ways to hide objects from view. The latest effort, developed at the Univ. of Rochester, not only overcomes some of the limitations of previous devices, but it uses inexpensive, readily available materials in a novel configuration.

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Unraveling the mystery of gamma-ray bursts

November 20, 2014 7:39 am | by Univ. of Cardiff | Comments

A team of scientists hope to trace the origins of gamma-ray bursts with the aid of giant space microphones. Researchers at Cardiff Univ. are trying to work out the possible sounds scientists might expect to hear when the ultra-sensitive LIGO and Virgo detectors are switched on in 2015.

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Government wants more clinical trial results made public

November 19, 2014 3:00 pm | by Lauran Neergaard - AP Medical Writer - Associated Press | Comments

The government proposed new rules Wednesday to make it easier for doctors and patients to learn if clinical trials of treatments worked or not. Thousands of Americans participate in clinical trials every year, testing new treatments, comparing old ones or helping to uncover general knowledge about health. Many of the studies are reported in scientific journals and trumpeted in the news.

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World not close to avoiding dangerous warming

November 19, 2014 11:00 am | by Seth Borenstein - AP Science Writer - Associated Press | Comments

The world still isn't close to preventing what leaders call a dangerous level of man-made warming, a new United Nations report says. That's despite some nations' recent pledges to cut back on carbon dioxide emissions. The report looks at the gap between what countries promise to do about carbon pollution and what scientists say needs to be done to prevent temperatures rising another two degrees.

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Immune system surprise hints at new strategy for fighting HIV

November 19, 2014 10:53 am | by Bill Hathaway, Yale Univ. | Comments

The discovery of the innate immunity system’s role in mobilizing the body’s defenses against invading microorganisms has been long studied at Yale Univ. Now in Nature Immunology, Yale researchers have discovered a surprising twist to the story that may open a new avenue in the fight against HIV.

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Biochemists build largest synthetic molecular “cage” ever

November 19, 2014 10:26 am | by Stuart Wolpert, Univ. of California, Los Angeles | Comments

Univ. of California, Los Angeles biochemists have created the largest-ever protein that self-assembles into a molecular “cage.” The research could lead to synthetic vaccines that protect people from the flu, HIV and other diseases. At a size hundreds of times smaller than a human cell, it also could lead to new methods of delivering pharmaceuticals inside of cells, or to the creation of new nanoscale materials.

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Streamlining thin-film processing saves time, energy

November 19, 2014 9:41 am | by South Dakota State University Communications Center | Comments

Energy storage devices and computer screens may seem worlds apart, but they're not. When Assoc. Prof. Qi Hua Fan set out to make a less expensive supercapacitor for storing renewable energy, he developed a new plasma technology that will streamline the production of display screens.

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Research advances understanding of atomically thin crystal growth

November 19, 2014 9:24 am | by David Goddard, UT Knoxville | Comments

Univ. of Tennessee, Knoxville’s College of Engineering has made recent headlines for discoveries that, while atomically small, could impact our modern world. The team focused on the role of epilayer-substrate interactions in determining orientational relations in van der Waals epitaxy.

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X-ray laser brings key cell structures into focus

November 19, 2014 9:07 am | by SLAC Office of Communications | Comments

Scientists have made high-resolution x-ray laser images of an intact cellular structure much faster and more efficiently than ever possible before. The results are an important step toward atomic-scale imaging of intact biological particles, including viruses and bacteria. The technique was demonstrated at the Linac Coherent Light Source at the SLAC National Accelerator Laboratory.

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Study: Light may skew lab tests on nanoparticles’ health effects

November 19, 2014 8:38 am | by Chad Boutin, NIST | Comments

Truth shines a light into dark places. But sometimes to find that truth in the first place, it’s better to stay in the dark. That’s what recent findings at NIST show about methods for testing the safety of nanoparticles. It turns out that previous tests indicating that some nanoparticles can damage our DNA may have been skewed by inadvertent light exposure in the lab.

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Research quantifies health benefits of reducing greenhouse gas emissions

November 19, 2014 8:31 am | by Allan Chen, Lawrence Berkeley National Laboratory | Comments

Reducing greenhouse gas (GHG) emissions, which result from the burning of fossil fuels, also reduces the incidence of health problems from particulate matter (PM) in these emissions. A team of scientists has calculated that the economic benefit of reduced health impacts from GHG reduction strategies in the U.S. range between $6 and $14 billion annually in 2020, depending on how the reductions are accomplished.

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Black hole loses its appetite for gassy cloud

November 19, 2014 8:22 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | Comments

In a showdown of black hole versus G2—a cloud of gas and dust—it looks like G2 won. Recent research shows that G2 came within 30 billion km of the super-massive black hole at the center of our galaxy, yet managed to escape from the gravitational pull of the black hole.

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Hormone points to potential treatment for metabolic disorders

November 19, 2014 8:13 am | by Laura Williams, Univ. of Michigan | Comments

Researchers at the Univ. of Michigan have discovered how a previously unknown hormone serves as a messenger from fat cells to the liver and are investigating the potential of developing a new treatment for metabolic disorders. Jiandie Lin of the Life Sciences Institute described how in mice the hormone, NRG4, is secreted by so-called brown fat cells and communicates with the liver to regulate the conversion of sugar into fat.

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Running the color gamut

November 19, 2014 8:01 am | by Rob Matheson, MIT News Office | Comments

If LCD TVs get more colorful in the next few years, it will probably be thanks to QD Vision, a pioneer of quantum-dot television displays. Quantum dots are light-emitting semiconductor nanocrystals that can be tuned to emit all colors across the visible spectrum. By tuning these dots to red and green, and using a blue backlight to energize them, QD Vision has developed an optical component that can boost the color gamut for LCD televisions.

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Fool’s gold as a solar material?

November 19, 2014 7:47 am | by David Tennebaum, Univ. of Wisconsin-Madison | Comments

As the installation of photovoltaic solar cells continues to accelerate, scientists are looking for inexpensive materials beyond the traditional silicon that can efficiently convert sunlight into electricity. Theoretically, iron pyrite could do the job, but when it works at all, the conversion efficiency remains frustratingly low. Now, a Univ. of Wisconsin-Madison research team explains why that is.

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