Tag: "wheel" at biology news
Where Fossils Fear To Tread: Scientists Follow Genes To An Ancient Ancestor
... is still at work. "Everybody thought the wheel
was invented again and again and again," Carroll said, "but there was a single solution and everything is a modification of that." That argument is supported, said Carroll, by the discovery of the same appendage-making genes in six broad div...
New Machine Slashes Time, Cost To Make Unique Lenses
...ular ball-bearing spindle spins the rough grinding wheel
to quickly shapethe lens, and then an advanced spindle that floats a finegrinding wheel
on a cushion of air produces an almost polishedfinish. The machine's built-in measuring system can t...
Biggest Acoustics Meeting Ever
...nteresting questions. How is the squeal of a train wheel
intimatelyconnected to the heavenly tones of a violin? Could sound waves replace hypodermic needles and scalpels inthe hospital of the future? Do babies begin to learn their native language even before birth? These and many other questions will be a...
Stanford scientists use noise to sort proteins
...a small pawl attached to a spring that permits the wheel
to turn inonly one direction. The ratchet is powe...energy. If the spring is light enough to allow the wheel
to turn,however, it is also light enough so that thermal vibrations will cause the pawlto unlatch in...
CU studies suggest exercise protects body against negative effects of stress from brain to cell
... student Justin Hinde, rats that chose to run on a wheel
for four weeks prior to experiencing 90 minutes of...e brain areas. Rats that had been running on a wheel
before stress had lower amounts of Fos protein in the pre-frontal cortex, septum and amygdala of the...
Exercise improves learning and memory
... a group of mice who exercised freely on a running wheel
for one month. Mice in the exercise group logged an average daily distance of 4.87 kilometers, or 2.92 miles. Both groups were trained to locate a submerged camouflaged platform in a maze that was lying just below the surface in cloudy water. Mice di...
Integrative approach to studying penguins, cockroaches and little hairy noses makes comparative biomechanics group at UC Berkeley the nation's best
...hat control them to find out how flies are able to wheel
around in midair and even turn upside down and land on the ceiling. In the process he has shown how a pair of vestigial wings, the halteres, act as the fly's gyroscope, relaying signals to the wing muscles to alter their stroke or angle of attack. He...
Researchers reveal contaminated factory sites unknown to regulators
...usable lead from things like automobile batteries, wheel
weights and cable covers. Primary lead smelting uses lead ore. The soil of nearly half of the sites has potentially hazardous lead levels, which in some cases dramatically exceed U.S. Environmental Protection Agency standards, according to Ecke...
Using lasers, biologists succeed in getting cells to change course
...might be likened to putting the breaks on one rear wheel
of a car so that the car would tend to pull to one side or another, Jacobson said. Besides Jacobson, UNC authors are Drs. Partha Roy, a postdoctoral fellow soon to join the research faculty, and Zenon Rajfur, research associate. Drs. Gerard ...
Single cell type seems to control internal clock and pupil of eye
... says Hattar. "When and how much a mouse runs on a wheel
reveals whether the animal thinks it is day or night. If melanopsin is required for resetting the internal clock, however, mice without it shouldn't be able to adjust to cycles of light and dark."...
Roadmaps & Rampways
...s annual meetings to make the events accessible to wheel
chairs. She notes that the 2002 Annual Meeting in Boston this year took place in a hotel that has been completely redone to meet the needs of people with disabilities. The ramps are now permanent....
Rushing fireball developed its own form of sugar digestion
...Latin name Pyrococcus furiosus, has reinvented the wheel
for several steps of sugar digestion. Pyrococcus f...ds, Pyrococcus furiosus independently invented the wheel
of sugar digestion. Meanwhile, with the help of gene technology, the Wageningen scientists are tryin...
UMass scientist identifies gene that governs obesity, physical activity, sex behaviors in mice
...wheel. "Most mice love to run on a little exercise wheel
when you put it in their cage," notes Good, "but not these guys. They run less than other mice before they become obese. Once they do put the extra weight on, their decreased physical activity contributes to their weight gain even more than their foo...
Physical activity in the elderly ruled in part by genetics
...ndividually. Within each mouse cage was a running wheel
interfaced with a magnetic sensor and computer tha... have shown that mice gradually increase voluntary wheel
running activity from age 3 weeks to 8 weeks with peak activity occurring between 55 and 65 days, af...
New prospects for treating muscular dystrophy: Stem cells restore muscle in MD mice
...eated animals were also able to walk on a rotating wheel
for longer than untreated animals, although not as long as healthy mice. "I'm convinced this is an important result, but this is still not the therapy -- for the mice or for patients," Cossu said....
Researchers one step closer to Holy Grail of neurobiology
...tively." From responses to stimuli and the running wheel
experiments, Pfaff and his colleagues found that the sensory alertness and the motor activity of mice lacking the estrogen receptor-alpha was significantly less than genetically normal control mice. Surprisingly, there was no significant change in mo...
Leading U.S. gun manufacturer joins NJIT to develop personalized handgun
...tions--perhaps the yoke of a plane or the steering wheel
of a car. In New Jersey, the project to develop a personalized weapon, better known as smart gun, has been an ongoing effort since the spring of 2000 when NJIT received the support of the New Jersey State Legislature. To date, NJIT has received...
Brain study shows some animals crave exercise
...er 29 generations for their affinity for voluntary wheel
running. "All mice run on wheels, and, therefore,...y recorded their distances. By and large, the high wheel
running mice, compared to the other group, covered more ground in the same amount of time on their s...
Secondary complications and restoration of function in SCI
...estimated activity performance were measured. Rear wheel
position had a significant effect on seat inclination and weight distribution, which in turn affected stroke angle and push frequency. Identifying predictors of long-term pain in persons with SCI (pg 75) This longitudinal study of SCI patients sou...
Educational program increases some safety behaviors for older drivers
...ach an older driver who wants to remain behind the wheel
about their functional deficits that affect driving skills and to facilitate strategies for self regulation. "Results of study suggest that, on average, older drivers do embrace these new behaviors," said Dr. Owsley. "If we are going to offer these ...