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Tag: "fast" at biology news

Salty oceans provide early warning for climate change

...ade or two. Ocean water can’t possibly travel this fast (it takes nearly a century for a parcel of water to move from the South Atlantic to the North Atlantic). Instead the scientists think that energy is transferred through the ocean along a deep pressure wave. “The surge of salt generates a pressure gra...

Mutating the entire genome

A new, fast and inexpensive way to mutate genes and large, non-gene pieces of DNA has been developed by University of Utah geneticists. They tested the method by mutating a gene involved in bone formation, resulting in short, malformed tail and limbs in the muta...

Reconstructing the biology of extinct species: A new approach

...ategories ranging from very slow and deliberate to fast and agile. The scientists then compared the canal size of each species to its category of movement. The results revealed a highly significant statistical relationship between the radius of curvature of the semicircular canals and the species' ha...

Putting feelings into words produces therapeutic effects in the brain

...y show such emotional photographs subliminally, so fast a person can’t even see them. But does seeing an angry face and simply calling it an angry face change our brain response" The answer is yes, according to Matthew D. Lieberman, UCLA associate professor of psychology and a founder of social cognit...

Want to save polar bears? Follow the ice

...the bears generally cannot get anywhere near these fast swimming marine mammals. Another threat to the bears is the unpredictability of the melting of the sea ice away from the coast regions that bears shift to in the warmest parts of the year. Bears that make it to shore may be there for increasingly lo...

Mice with a migraine show signs of brain damage

...e oxygen-rich blood vessels soaks up the oxygen as fast as they can, leaving tissues further away with a diminished supply. It’s like a pride of lion cubs fighting for their mother’s milk ?a few may get nudged away, go without, and will eventually die. In a brain in the midst of cortical spreading depress...

Catching cancer's spread by watching hemoglobin

...d reveal the vessels themselves. If the imaging is fast enough, researchers can capture snapshots of blood flow in individual vessels. Moving beyond mere imaging, the technique can detect the difference between oxygen-carrying hemoglobin (oxyhemoglobin) and oxygen-lacking hemoglobin (deoxyhemoglobin). Thi...

Amphibians in losing race with environmental change

.... Many other species will also be unable to evolve fast enough to deal with these changes. Because of their unique characteristics, the amphibians are just the first to go." In their analysis, the OSU scientists point out that evolution is not a precise or perfect process - it takes time, is constrain...

Role of noise in neurons

... use action potential (AP) to transmit information fast and reliably to synapses, but the reliability of transmissions down fibers of less than 0.5 ìm in diameter was unknown until this paper. Using detailed models of rodent and squid axons and stochastic simulations, the authors performed experiments,...

Alien plants attack using 'resource conservation' as weapon, researchers say

...d a shortage of any one of these will restrict how fast they can grow. When plants use these inputs more efficiently, however, they can photosynthesize-and thus grow and spread-faster, according to Funk and Vitousek. To compare the resource-use efficiencies of alien and native plants, the researchers s...

Corals -- More complex than you?

...ll animals lose genes during evolution; those with fast generation turnover times ?like fruit flies ?shed genes particularly fast. Corals which take at least 5years to reach sexual maturity (compared with the laboratory fruitfly whose generation lasts only 3-4 weeks), and which have long and overlapping g...

An ancient bathtub ring of mammoth fossils

...eature’s entire field of vision and approaching as fast as 60 miles an hour. Some fragments may have come from full skeletons churned up and redistributed by later floods, while others may actually have ice-rafted in with erratics....

World's leading scientists announce creation of 'Encyclopedia of Life'

...ver, Internet technology needed to mature to allow fast and efficient creation of a comprehensive Encyclopedia. While specific Encyclopedia of Life efforts, including the scanning of key research publications and data, have been underway since January 2006, work has accelerated due to the support provide...

The longest carbon nanotubes you've ever seen

... 'alive' for a long period of time thus, providing fast and continuous transport of the carbon 'building blocks' to the carbon nanotube growth zone," said Shanov. The carbon nanotubes are extremely long compared to predecessors--the longest is 3 millimeters beyond the prior world record. More important...

Asexual worm quickly adapts to soil contamination

...ic effect on the nematode population. Unexpectedly fast adaptation was observed and considerable genetic changes took place. As a result of this the nematodes in the polluted soil became resistant to the contamination. In the contaminated culturing medium they laid more eggs and lived for longer than the ...

Decoding protein structures helps illuminate cause of diabetes

... sheets, then coil into fibers. "No matter how fast they're moving, we can take pictures of them," says Zanni. Without their automated method, he says, such experiments would be nearly impossible. The technique also has potential application in other human diseases that involve protein mis-folding...

Sandia researchers take new approach to studying how cells respond to pathogens

...nalyze cell activity. The microfluidic platform is fast and highly parallel and can perform hundreds of measurements 50 to 100 times faster than alternate methods. Singh says the end goal is to make a benchtop miniaturized system expected in about two years. It would be placed in Biosafety Level 3 or 4...

Mimicking how the brain recognizes street scenes

...information enters from the retina and passes in a fast feed-forward, bottom-up sweep through the hierarchical architecture of the visual cortex. What makes the Poggio lab's model so innovative and powerful is that, computationally speaking, it mimics the brain's own hierarchy. Specifically, the "layers" ...

ConocoPhillips establishes $22.5M biofuels research program at Iowa State

...y interested in converting biomass to fuel through fast pyrolysis, a process that uses heat in the absence of oxygen to decompose biomass into a liquid product. This so-called bio-oil can be used as a heating oil or can be converted into transportation fuel at petroleum refineries. Brown said ConocoPh...

When your brain talks, your muscles don't always listen

...hen exercising, but it's important to also do some fast exercises. You need a fast movement to prevent a fall. Even in the frail elderly, it is possible to use exercise bands for manu...

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