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Battery bounce test often bounces off target

March 31, 2015 8:15 am | by John Sullivan, Office of Engineering Communications, Princeton Univ. | News | Comments

Don't throw away those bouncing batteries. Researchers at Princeton Univ. have found that the common test of bouncing a household battery to learn if it is dead or not is not actually an effective way to check a battery's charge. 

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Scientists reveal mechanism of natural product with powerful antimicrobial action

March 31, 2015 8:04 am | by The Scripps Research Institute | News | Comments

Scientists from the Florida campus of The Scripps Research Institute have uncovered the unique mechanism of a powerful natural product with wide-ranging antifungal, antibacterial antimalaria and anticancer effects. The new study sheds light on the natural small molecule known as borrelidin.

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Electric vehicles may be more useful than previously thought

March 31, 2015 7:54 am | by Julie Chao, Lawrence Berkeley National Laboratory | News | Comments

In the first study of its kind, scientists at Lawrence Berkeley National Laboratory quantitatively show that electric vehicles (EVs) will meet the daily travel needs of drivers longer than commonly assumed. Many drivers and much prior literature on the retirement of EV batteries have assumed that EV batteries will be retired after the battery has lost 20% of its energy storage or power delivery capability.

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New drug stalls estrogen receptor-positive cancer cells, shrinks tumors

March 31, 2015 7:43 am | by Diana Yates, Life Sciences Editor, Univ. of Illinois | News | Comments

An experimental drug rapidly shrinks most tumors in a mouse model of human breast cancer, researchers report in the Proceedings of the National Academy of Sciences. When mice were treated with the experimental drug, BHPI, the tumors immediately stopped growing and began shrinking rapidly.

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Better traffic signals can cut greenhouse gas emissions

March 31, 2015 7:34 am | by David L. Chandler, MIT News Office | News | Comments

Sitting in traffic during rush hour is not just frustrating for drivers; it also adds unnecessary greenhouse gas emissions to the atmosphere. Now a study by researchers at Massachusetts Institute of Technology could lead to better ways of programming a city’s stoplights to reduce delays, improve efficiency and reduce emissions.

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Microsecond Raman imaging might probe cells, organs for disease

March 30, 2015 1:03 pm | by Emil Venere, Purdue Univ. | News | Comments

A vibrational spectroscopic imaging technology that can take images of living cells could represent an advanced medical diagnostic tool for the early detection of cancer and other diseases. High-speed spectroscopic imaging makes it possible to observe the quickly changing metabolic processes inside living cells and to image large areas of tissue, making it possible to scan an entire organ.

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As stars form, magnetic fields influence regions big and small

March 30, 2015 12:34 pm | by Christine Pulliam, Harvard-Smithsonian Center for Astrophysics | News | Comments

Stars form when gravity pulls together material within giant clouds of gas and dust. But gravity isn't the only force at work. Both turbulence and magnetic fields battle gravity, either by stirring things up or by channeling and restricting gas flows, respectively. New research focusing on magnetic fields shows that they influence star formation on a variety of scales, from hundreds of light-years down to a fraction of a light-year.

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Multi-scale Fractal-based Methods for Useful Characterizations of Surface Topographies

March 30, 2015 12:05 pm | by Christopher Brown, Surface Metrology Lab, Worcester Polytechnic Institute | Articles | Comments

Geometrically, fractals have forms, or features, that repeat at different sizes over ranges of scales. These features can repeat exactly, such as the triangles that repeat with scale on a Koch snowflake or Minkowski sausage. Or, these features might repeat statistically, as on ground or abraded surfaces, where these repeating features create self-similar patterns of scratches or over a range of scales.

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High-tech method allows rapid imaging of functions in living brain

March 30, 2015 11:49 am | by Julie Flory, Washington Univ. of St. Louis | News | Comments

Researchers studying cancer and other invasive diseases rely on high-resolution imaging to see tumors and other activity deep within the body's tissues. Using a new high-speed, high-resolution imaging method, a team at Washington Univ. in St. Louis were able to see blood flow, blood oxygenation, oxygen metabolism and other functions inside a living mouse brain at faster rates than ever before.

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Roll up your screen and stow it away?

March 30, 2015 11:38 am | by George Hunka, Tel Aviv Univ. | News | Comments

From smartphones and tablets to computer monitors and interactive TV screens, electronic displays are everywhere. As the demand for instant, constant communication grows, so too does the urgency for more convenient portable devices, especially devices, like computer displays, that can be easily rolled up and put away, rather than requiring a flat surface for storage and transportation.

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Comet dust: Mercury’s “invisible paint”

March 30, 2015 11:26 am | by Kevin Stacey, Brown Univ. | News | Comments

A team of scientists has a new explanation for the planet Mercury’s dark, barely reflective surface. In a paper published in Nature Geoscience, the researchers suggest that a steady dusting of carbon from passing comets has slowly painted Mercury black over billions of years.

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Prototype nanoneedles generate new blood vessels in mice

March 30, 2015 11:20 am | by Imperial College London | News | Comments

Scientists have developed tiny nanoneedles that have successfully prompted parts of the body to generate new blood vessels, in a trial in mice. The researchers, from Imperial College London and Houston Methodist Research Institute, hope their nanoneedle technique could ultimately help damaged organs and nerves to repair themselves and help transplanted organs to thrive.

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Researchers develop computational model to simulate bacterial behavior

March 30, 2015 8:25 am | by Univ. of Notre Dame | News | Comments

Univ. of Notre Dame applied mathematician Mark Alber and environmental biotechnologist Robert Nerenberg have developed a new computational model that effectively simulates the mechanical behavior of biofilms. Their model may lead to new strategies for studying a range of issues from blood clots to waste treatment systems.

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Recipe for antibacterial plastic

March 30, 2015 8:21 am | by Cal Powell, Univ. of Georgia | News | Comments

Bioplastics made from protein sources such as albumin and whey have shown significant antibacterial properties, findings that could eventually lead to their use in plastics used in medical applications such as wound healing dressings, sutures, catheter tubes and drug delivery, according to a recent study by the Univ. of Georgia College of Family and Consumer Sciences.

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Nanoscale “worms” provide new route to nano-necklace structures

March 30, 2015 8:11 am | by John Toon, Georgia Institute of Technology | News | Comments

Researchers have developed a novel technique for crafting nanometer-scale necklaces based on tiny star-like structures threaded onto a polymeric backbone. The technique could provide a new way to produce hybrid organic-inorganic shish kebab structures from semiconducting, magnetic, ferroelectric and other materials that may afford useful nanoscale properties.

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