Quantcast

Latest Duke University Stories

335e4a76e728be7e45e7922deddbea631
2011-04-15 07:41:45

Using eyes made of a calcium carbonate crystal, a simple mollusk may have evolved enough vision to spot potential predators, scientists say. The three-inch-long mollusks, called chitons, have hundreds of eye-like structures with lenses made of aragonite, a type of rock. It's the first time scientists have found an animal that makes eye lenses from aragonite and not the rock's close cousin, calcite. "It's surprising how these creatures make their eyes from rocks," said Duke biologist...

14f25e3fc4fa7ade57e591b51437dfd1
2011-04-04 23:07:47

The number of endangered leatherback sea turtle nests at 68 beaches in Florida has increased by 10.2 percent a year since 1979, according to a new Duke University-led study published in the current issue of the journal Ecological Applications.Some beaches posted annual increases of more than 16 percent, others as low as 3.1 percent.The population boom of turtle nests in the Sunshine State mirrors trends observed for other Atlantic leatherback sea turtle populations and is "very encouraging...

5721094289f07ff4f6fab066cbfe8cd4
2011-04-04 20:27:28

Study of 27,000 trees shows early spring warming, summer drought as major factorsAn 18-year study of 27,000 individual trees by National Science Foundation (NSF)-funded scientists finds that tree growth and fecundity--the ability to produce viable seeds--are more sensitive to climate change than previously thought.The results, published tomorrow in the journal Global Change Biology, identify earlier spring warming as one of several factors that affect tree reproduction and growth. They also...

2011-03-25 07:10:00

DURHAM, N.C., March 25, 2011 /PRNewswire/ -- Centers for Disease Control and Prevention has awarded $2 million to Duke University Prevention Epicenter as part of its program to conduct innovative research in the science of preventing Healthcare-Associated Infections, or HAIs, with the goal of saving lives in healthcare settings. The Tru-D germicidal disinfection system was selected by Duke University after successful internal trials and published third-party data provided reliable,...

9c585ea906ad2b47f4e7aa3dc6e261351
2011-03-21 12:20:00

A research team from Duke University in North Carolina has recreated autistic mice by mutating the gene which controls production of the protein, Shank3. The single protein may trigger autistic spectrum disorders by disrupting communication between brain cells, BBC News is reporting. Autism affects the ability of children and adults to communicate and interact socially and has varying degrees of severity. Hundreds of genes linked to the condition have been found. However the precise...

2011-03-15 07:55:21

(Ivanhoe Newswire)"” From overworked professionals to over-extended students, everyone worries about how much sleep they're getting. A new study from Duke University has shown yet another consequence of not sleeping enough: sleep deprivation can lead to a more optimistic outlook, resulting in riskier decisions. Using a functional MRI, scientists showed that a lack of sleep increases brain activity in the brain regions that assess positive outcomes while decreasing activity in the...

2011-03-09 13:23:18

The powers that be in Las Vegas figured out something long before neuroscientists at two Duke University medical schools confirmed their ideas this week: Trying to make decisions while sleep-deprived can lead to a case of optimism. The scientists showed, using a functional MRI, that a night of sleep deprivation leads to increased brain activity in brain regions that assess positive outcomes, while at the same time this deprivation leads to decreased activation in the brain areas that process...

7c6f4e1f9e6bd1d24dfbab604d19f18e1
2011-03-07 10:50:00

Humans share 98.7 percent of our DNA with chimpanzees, but we share one important similarity with one species of chimp, the common chimpanzee, that we don't share with the other, the bonobo. That similarity is violence. While humans and the common chimpanzee wage war and kill each other, bonobos do not. "There has never been a recorded case in captivity or in the wild of a bonobo killing another bonobo," notes anthropologist Brian Hare. Hare is an assistant professor in evolutionary...

4a4253e6c7eb075826976aa08473105e1
2011-03-05 11:51:38

A Duke University team has seen for the first time how soft polymers, such as wire insulation, can break down under exposure to electrical current.Researchers have known for decades that polymers, such those insulating wires, may break down due to deformation of the polymers. But the process had never been seen.In a series of experiments, Duke University engineers have documented at the microscopic level how plastic deforms to breakdown as it is subjected to ever-increasing electric voltage....

2011-03-02 13:00:00

NEBRASKA CITY, Neb., March 2, 2011 /PRNewswire-USNewswire/ -- More and more colleges and universities across the United States are being recognized for taking care of one of the most valuable resources on campus - trees. Today, the Arbor Day Foundation announced that the number of schools that have been named a Tree Campus USA college or university has more than tripled since the program began in 2008. Tree Campus USA, modeled after the Arbor Day Foundation's successful Tree City USA...


Word of the Day
bellycheer
  • Good cheer; viands.
  • To revel; to feast.
The word 'bellycheer' may come from 'belle cheer', "good cheer".
Related