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Latest Duke University Stories

2010-11-01 15:19:23

Chandra Tucker shines a blue light on yeast and mammalian cells in her Duke University lab and the edges of them start to glow. The effect is the result of a light-activated switch from a plant that has been inserted into the cell. Researchers could use this novel "on-off switch" to control cell growth or death, grow new tissue or deliver doses of medication directly to diseased cells, said Tucker, an assistant research professor in the biology department at Duke. She and colleagues created...

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2010-10-28 08:21:55

A doubling of abnormally wet or dry summer weather in the southeastern United States in recent decades has come from an intensification of the summertime North Atlantic Subtropical High (NASH), or "Bermuda High." And that intensification appears to be coming from global warming, according to a new analysis by a Duke University-led team of climate scientists. The NASH is an area of high pressure that forms each summer near Bermuda, where its powerful surface center helps steer Atlantic...

2010-10-27 16:28:00

EAST BRUNSWICK, N.J., Oct. 27 /PRNewswire-FirstCall/ -- Savient Pharmaceuticals, Inc. (Nasdaq: SVNT) announced today that the company will release financial results for the third quarter 2010 following the close of the market on Thursday, November 4, 2010. Paul Hamelin, President, and David Gionco, Group Vice President, Chief Financial Officer & Treasurer, will host an investment community conference call beginning at 9:00 a.m. Eastern Time on Friday, November 5, 2010 to discuss these...

2010-10-22 00:38:38

Step aside copper and make way for a better carrier of information -- light. As good as the metal has been in zipping information from one circuit to another on silicon inside computers and other electronic devices, optical signals can carry much more, according to Duke University electrical engineers. So the engineers have designed and demonstrated microscopically small lasers integrated with thin film-light guides on silicon that could replace the copper in a host of electronic products....

2010-10-22 00:37:32

Being the right size and existing in the limbo between a solid and a liquid state appear to be the secrets to improving the efficiency of chemical catalysts that can create better nanoparticles or more efficient energy sources. When matter is in this transitional state, a catalyst can achieve its utmost potential with the right combination of catalyst particle size and temperature, according to a pair of Duke University researchers. A catalyst is an agent or chemical that facilitates a...

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2010-10-21 08:35:00

Researchers measure survival, reproduction of thousands of arctic and alpine plants over six years As Earth's climate warms, species are expected to shift their geographical ranges away from the equator or to higher elevations. While scientists have documented such shifts for many plants and animals, the ranges of others seem stable. When species respond in different ways to the same amount of warming, it becomes more difficult for ecologists to predict future biological effects of climate...

2010-09-29 13:35:40

The yellow monkeyflower, an unassuming little plant that lives as both a perennial on the foggy coasts of the Pacific Northwest and a dry-land annual hundreds of miles inland, harbors a significant clue about evolution. Duke graduate student and native northern Californian David Lowry had become interested in how a single species could live such different lifestyles. He set out to find a gene or genes that would account for the monkeyflower (Mimulus guttatus) being a lush, moisture-loving,...

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2010-09-29 13:10:00

Publicly available cell-phone applications from application markets are releasing consumers' private information to online advertisers, according to a joint study by Intel Labs, Penn State, and Duke University. Researchers at the participating institutions have developed a realtime monitoring service called TaintDroid that precisely analyses how private information is obtained and released by applications "downloaded" to consumer phones. TaintDroid is an extension to the Android mobile-phone...

2010-09-28 19:07:55

Duke University bioengineers have not only figured out a way to sneak molecular spies through the walls of individual cells, they can now slip them into the command center -- or nucleus -- of those cells, where they can report back important information or drop off payloads. Using silver nanoparticles cloaked in a protein from the HIV virus that has an uncanny ability to penetrate human cells, the scientists have demonstrated that they can enter the inner workings of the nucleus and detect...

2010-09-23 12:55:11

While scientists have spent the past 40 years describing the intricate series of events that occur when one mammalian cell divides into two, they still haven't agreed on how the process begins. There are two seemingly contradictory theories, which now may be reconciled by a third theory being proposed by Duke University bioengineer Lingchong You. These findings could provide insights into the initiation of disease, such as cancer, which is marked by uncontrolled cell proliferation. During...


Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'