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Tag: "move" at biology news

Ferns provide model for tiny motors powered by evaporation

...nging device that uses the power of evaporation to move itself---materials that could provide a method for...ter pulls on the tips of the ribs so that the tips move toward each other, straightening out the spine of the device. In this way, the closed device opens w...

Nanotech tools yield DNA transcription breakthrough

... then breaks free from its initial binding site to move along DNA to continue synthesizing RNA. The res...ons with the initial binding site, and to begin to move down the gene. "Our findings were made possible by newly developed, single-molecule methods," sa...

Wild tigers need cat food

... average of 23 percent of the park’s tigers either move away or die each year from either naturally or from poaching outside of the park, yet total numbers remained high. "This study shows that even well-protected wild tiger populations have naturally high rates of annual losses, and yet do fine becaus...

Researchers image molecular motor structural changes

...al agency that funds innovative research. As they move nutrients or other cellular loads around the cell,...f energy in all cells, into the power necessary to move along the microtubules. "In order to visualize the actual structure of the motor molecule bound to ...

Scientists get best look ever at water-life connection

...nswer, revealed in Zhong's lab: water molecules do move fast on their own, but they slow down -- to a spee... -- on the molecular scale, anyway -- water has to move 100 times slower to get the job done. "The fast-moving water has to slow down to connect with a slo...

UCSD researchers discover internal compass of immune cell

...nding puzzle of how neutrophils find their way and move toward sites of injury or infection in the body," ...ted at the front of cells, providing the signal to move toward the source of chemoattractants. Lead authors Yu Chen, M.D., UCSD postgraduate researcher i...

Researchers create genetically matched embryonic stem cells for transplantation

...an nuclear transfer, and therefore may allow us to move toward human applications sooner." In the new study, Daley, first author Kitai Kim, PhD, and colleagues at Harvard Medical School, Brigham and Women's Hospital and Massachusetts General Hospital used unfertilized eggs of mice to create so-called p...

Fighting like a girl or boy determined by gene in fruit flies

... movies are replayed in slow motion to record each move and countermove. "Ed has systematically developed reproducibly aggressive behavior in flies and paved the way for serious analysis," said Laurie Tompkins, program director at the National Institute of General Medical Sciences, which funds the work...

Twenty Years of Malaria Research: Outcomes and Perspectives

...t women and in children. The unit was forced to move to its current location in Mae Sot in 1996 one year after an attack by guerrillas from the Democratic Karen Buddhist Army, targeting foreign aid workers in an attempt to force the refugees to return to Burma. During the attack, Professor Nosten and h...

Uniform tungsten trimers stand and deliver

...to vibrationally isolate the instrument. It cannot move even a small amount because we are using a stream of electrons to measure the distance from the microscope's tip to a small space between atoms," White explained. The collaborators also characterized the cluster mass, determined the ratio of tungsten...

Walking not enough for significant exercise benefits

...." "You've got to do more than light exercise and move towards the inclusion of regular moderate activity, and don't be shy to interject an occasional period of time at the vigorous level." ...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

...m cases involving dystocia--failure of the baby to move down the birth canal. (Dystocia can result from such causes as the baby being improperly positioned in the birth canal, or from the baby simply being too large.) Because the results of that earlier study were inconclusive, the U.S. Food and Drug ...

Coral reefs are increasingly vulnerable to angry oceans

...tach, and the change in force of the waves as they move across the reef," said Madin. "This enables us to predict the likely changes in composition of the coral in response to present and future storms or tsunamis." The researchers explained that managers can use this information to better understand h...

Like a snail through the intestinal canal

...f the large intestine (colon). The robots, as they move forward under their own power, ignore this layer o...ovement. One by one the small 'hands' of the robot move forward. After this, the entire robot can be slide forward incrementally, whereupon the process of s...

On the golf tee or pitcher's mound, brain dooms motion to inconsistency

...t Stanford University. "The main reason you can't move the same way each and every time, such as swinging a golf club, is that your brain can't plan the swing the same way each time," says electrical engineering Assistant Professor Krishna Shenoy, whose research includes study of the neural basis of sens...

UNC scientists solve mystery of how largest cellular motor protein powers movement

...mosomes and something has to generate the force to move chromosomes apart. Dynein provides the mechanical energy to do that,?Doholyan said. While the research offers no immediate application to human disease, the authors noted that mutations of dynein have been implicated in some neurodegenerative and k...

St. Jude finds clues to hearing loss from chemotherapy

... ear. These cells sprout extremely fine hairs that move in response to sound waves and set up the electrical impulse that goes into the brain. These are the same cells damaged in adults by prolonged exposure to loud noise. "In the future we'd like to be able to prevent the loss of these hair cells or trig...

Ocean temperature predicts spread of marine species

...ts inbreeding; for some species, this is a time to move from breeding ground to habitat where they'll mature," she said. But less than 1 percent of larvae survive dispersal. They are consumed by predators, encounter harsh environments or never reach their destination and starve. For endangered species,...

Female pronghorns choose mate based on substance as well as show

...e a mating advantage, then evolution would rapidly move to the point where all males, regardless of genetic quality, have high-quality ornaments. "Female mate choice is likely a very important evolutionary force that does much more than select for ornaments in a few species," said John Byers of the Univ...

UGA scientists unravel 'molecular inch-worm' structure of walking-pneumonia bacterium

...opulsion called "gliding motility." Bacteria can move in a variety of ways, including the use of flagella to "swim." But since M. pneumoniae lack flagella, they "glide," a method of movement that has been known for some time yet never entirely understood. The cells seem to bend and flex, but it's unclea...

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