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Tag: "back" at biology news

Electronic chip, interacting with the brain, modifies pathways for controlling movement

...ert this activity into a stimulus that can be sent back to the brain, spinal cord, or muscle, and thereby set up an artificial connection that operates continuously during normal behavior. This recurrent brain-computer interface creates an artificial motor pathway that the brain may learn to use to compen...

What animals can tell us about hemorrhage, organ transplants and aging

... lie on the shore like brittle skeletons, but snap back to life when placed in water? Naked mole rats can live for 28 years but their mice cousins live only three? Birds live longer than their ultra-high metabolic rates would predict? Matthew T. Andrews of the University of Minnesota Duluth and Hannah ...

MIT nanoparticles may help detect, treat tumors

...e resulting nanoparticle clumps are too big to get back out of the gaps. Further, the clumps have a stronger magnetic signal than do individual nanoparticles, allowing detection by MRI. "We inject nanoparticles that will self-assemble when they are exposed to proteases inside of invasive tumors," said S...

P(acman) takes a bite out of deciphering Drosophila DNA

...ck a particular gene and then try to put that gene back into the fly, it inserts itself randomly into the genetic blueprint. In some cases, it makes too much protein, and in others, too little. In other instances, it may disrupt the message from another gene. “You are really comparing apples and o...

Alarming decline in Nepal's rhinos and tigers in former Maoist stronghold

...6 assessment, done by a 40-member team on elephant back that included Bardia National Park staff, IUCN (the World Conservation Union) and WWF, also apprehended two poachers armed with locally made muzzle guns. Four weapons and a large cache of ammunition were seized along with more than 660 pounds of smok...

Tests for 'face-blindness' reveal disorder may not be so rare

...s of other objects. Reports of prosopagnosia date back to antiquity, although it wasn't until 1947 that researchers made the first modern, extensive description of symptoms. The neurological basis of the disorder remains poorly understood, although research has confirmed that the brain processes faces di...

With record resolution and sensitivity, tool images how life organizes in a cell membrane

...ns for part of their life,'' Boxer said. ''They go back and forth. When you're in two dimensions, your chance of bumping into something else is a lot higher than when you're in three dimensions. This is the idea of the rafts. You get one of these pieces of grease stuck on you, and now you become associate...

Air travel and pandemic flu

... serious influenza outbreak will do little to hold back the spread of the infection, according to the findings of a study conducted at the UK Health Protection Agency and published in the journal PLoS Medicine. Sometimes a new type of influeza virus appears that causes an illness that is more serious th...

African wetland managers armed with new technology

...is tedious and cumbersome. I am now anxious to get back to the office and use these products to update my past work. It is marvellous." The seminar also sought to help African users critically assess their requirements, suggest new products, identify inefficiencies and take over the process. All the tra...

'Cellular antennae' on algae give clues to how human cells receive signals

... cilia themselves were still able to beat, or move back and forth, for about 40 minutes before they began to shorten. The team focused on fertilization of the alga, a process that requires a cilium to bind to a molecule on a cilium from a cell of the opposite mating type. They found that when the externa...

Fire ants: Their true story told by the scientist who loves them

...he face of the Earth ?or at least out of their own back yards. The reviled South American native that invaded the U.S. Sun Belt via 1940s Mobile, Ala., is known in biology circles as Solenopsis invicta and everywhere else as a painful pest in the grass, so to speak. Then there's Walter R. Tschinkel. An ...

Newborn screening can cause unnecessary parental stress

...ot correctly understand why their child was called back for a repeat test, the study found. Mothers who knew the correct reason had reduced stress. (This was not true for fathers, however.) Other findings: Some parents had to wait as long as a month to get the result of the second test, and 26 percent...

Female birds boost up their eggs when hearing sexy song

...ive their mate's quality. The researchers played back attractive ("sexy") songs and less attractive control songs of male canaries to female domesticated canaries. When the females started egg-laying they varied the size of their eggs in the nest according to the attractiveness of the male's song. That ...

Smokers invite to test vaccine against nicotine addiction

... nicotine-triggered reward that tempts most people back into the habit. Northern California smokers over 18 are invited to join a national study to determine whether NicVax can help people abstain from smoking and help them avoid relapsing within the next 12 months. Participation is free and requires a...

Dragonfly migration resembles that of birds, scientists say

...arities as well, whichmakes us wonder just how far back in Earth's history the rules formigration were established in its animals." According to fossil records, dragonflies appeared about 285 millionyears ago, predating the first birds by about 140 million years. Wikelski said that the findings could al...

UNH researcher restoring oyster reefs to Great Bay

...oratory. Now Grizzle is working to bring oysters back to Great Bay ?lots of them. He's helping the state of New Hampshire meet its established goal of restoring 20 acres of oyster reefs by 2010. "I hope we're going to have a bay with a healthy oyster population, and we're going to work hard to do it," h...

Triple threat polymer captures and releases

...ain. "When you pull on a sponge, the water comes back out," she said. "But in our case, because our sponge and the channels within it are essentially nanoscopic, the water cannot get out, at least not fast enough to allow for a reorganization of the material, and therefore it just rigidifies the mat...

Hope I die before I get old?

...le in old age. And now that he's 61, he might look back and think he himself was happier back then. But the opposite is likely to be true: Older people "mis-remember" how happy they were as yout...

Methane-belching bugs inspire a new theory of the origin of life on Earth

...d biochemical energy by converting this derivative back to acetate. Excreting acetate would have completed the cycle. "Our paper," House suggests, "contains a very sensible early metabolism." "It is quite possible," Ferry says reverently, "that this could be the first metabolic cycle." As in virtually ev...

Infected for life

...son why cold sores, caused by a herpes virus, come back again and again. The new study, published online last month in Nature, points to a small RNA molecule, called a microRNA (miRNA) as the culprit that keeps the latent virus-infected cell alive. These findings could one day lead to a new way to fight t...

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