Tag: "upside" at biology news

New aerogels could clean contaminated water, purify hydrogen for fuel cells

...ere amazed," said Kanatzidis. "We turned the flask upside down and nothing flowed." Generally, such reactions produce only uninteresting precipitates at the bottom of the flask, he said, so that in this case, "we knew we had something special." Kanatzidis and his co-workers recognized that aerogels offe...

Synthetic adhesive mimics sticking powers of gecko and mussel

...to scurry up vertical surfaces and even move along upside down. Their feet stick but only temporarily, coming off of surfaces again and again like a sticky note. But put those feet underwater, and their ability to stick is dramatically reduced. Water is an enemy of adhesives, which typically do not work w...

Nanotechnology: consumers must be convinced benefits outweigh risks

...technology. Nanotechnology is turning our world upside down...It also is shaking up our understanding of what makes something harmful and how we deal with that, according to Maynard. He described the current U.S. policy toward managing the possible health and safety risks of nanotechnologies as approachi...

The origin of the brain lies in a worm

...mon descent and vertebrates have turned themselves upside down throughout the course of evolution. "This explains perfectly why we find the same centralised CNS on the backside of vertebrates and the bellyside of Platynereis," Arendt says. "How the inversion occurred and how other invertebrates have modifie...

Right angles are all wrong for tree frog adhesion

...e small tree frogs can even adhere when completely upside down. Conversely when walking or jumping they can detach their toe pads easily. Researchers from the University of Glasgow will present insights into how this fascinating ability is controlled at the Society for Experimental Biologys Annual Meeting ...

Ohio University researchers discover evolutionary oddity in flamingos

...low water, they bend their necks, tilt their bills upside down in the water and swish their heads from side-to-side. Their large tongue acts like a piston, sucking water into the front of the bill and then pushing it out the sides. Fringed plates on the tongue trap algae and crustaceans in the circulating w...

Always keeping a safe distance

...m with the dye. "The whole system had to be turned upside down," explained Kerssemakers. Therefore the researchers did not directly measure the distance of the motor protein from the microtubule, but the distance that kinesin-1 holds the transport rails from the reflecting surface. To this end, they covered...

ACS News Service Weekly PressPac -- Oct. 4, 2006

...bles, avoid towel drying and keep the glass turned upside down.) The report, in the current (Oct. 4) issue of the biweekly ACS Journal of Agricultural and Food Chemistry, describes how interactions between tiny gas pockets near the fibers influence the bubble trains. The scientists state that their observ...

Paramecia adapt their swimming to changing gravitational force

...ses the cell to float more and that turns gravity upside down for the cell." Cranking the field intensity even higher, Valles and Guevorkian could test the limits of protozoan endurance. At about eight times normal gravity, the little swimmers stalled, swimming upward, but making no progress. At this brea...

How satellite tracking revealed the migratory mysteries of endangered Atlantic loggerhead turtles

...y found could turn current conservation strategies upside down, as the team discovered the turtles adopted two distinct approaches to finding food, linked to their size. Previously it was thought that hatchlings left the coastal region to forage far out at sea before returning, later in life, to find food c...

Oh, what a feeling - dancing on the ceiling!

...g this James Bond-style ability of insects to hang upside down from a ceiling. In the future such knowledge could lead to the design of tiny machines that mimic this phenomenon of nature. The team led by Stanislav Gorb used optical sensors to measure the forces applied by each leg of a fly whilst walking fr...

Flying tip of bees: Leave your legs dangling!

...ility: "They roll all the way to the side or often upside down, and crash to the ground", observes Combes. This means that what limits the bee's speed is not muscle power or the amplitude of its wing beat, but the pitch of the body balanced with the resulting rotational instability. "Having the legs extend...

Princeton professor foresees computer science revolution

...A few short years before Einstein turned our world upside down with his theory of relativity, the great Lord Kelvin declared that "There is nothing new to be discovered in physics now." Not his lordship's finest hour. I think that computer science bears an uncanny resemblance to pre-Einstein physics. Moore'...

Hummingbird flight an evolutionary marvel

...cts, a hummingbird can invert its wings turn them upside down during the upstroke a fair amount more than an average bird. Thus, is has long been assumed that hummingbirds, like insects, were developing equal amounts of lift during both halves of the wing cycle. But Warrick and his colleagues, Brett Tobal...

Ophthalmologists and physicists team up to design 'bionic eye'

...cells. Explained Palanker: "That is why it's built upside down, because those cells on top--the bipolars and ganglions--do not require as many nutrients and as much metabolic support as do photoreceptors." A crucial aspect of visual perception is eye motion. Palanker said the Stanford system provides a powe...

Calorie restriction leads to some brain benefits but not others in mice

...ity, like quickly climbing down a pole and hanging upside down from a screen. Old animals fed normal diets were significantly worse at these tasks. But calorie restriction had almost no effect on several drills used to measure pure cognitive performance. In one test of spatial learning and memory called the...

Latest buzz in research: Intoxicated honey bees may clue scientists into drunken human behavior

...s time flying, walking and grooming, and more time upside down. The appearance of inebriation occured sooner...pent walking, standing still, grooming, flying and upside down on its back. Blood ethanol concentrations increased with time and with the amount of ethanol ea...

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