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Tag: "water" at biology news

Technology exists to keep E. coli out of food

...s food and wipes out E. coli. While electrolyzed water systems are not new, this system, developed by a t... is environmentally friendly; its only outputs are water and salt. Feirtag sees great potential for the system and is working to get it into the food indus...

Shrinking ponds signal warmer, dryer Alaska

...sons, increased permafrost thawing, an increase in water loss due to evaporation from open water and transpiration from vegetation, and yet no substantial change in precipitation. The shrinking ...

An artificial cornea is in sight, thanks to biomimetic hydrogels

... Called Duoptix TM , the material can swell to a water content of 80 percent--about the same as biologica...l cornea is "the most biomimetic," he says, with a water concentration and mechanical properties that rival those of the natural cornea. "The dream would b...

Motorola researchers develop selective sensors based on carbon nanotubes

...vices detected the presence of heavy metal ions in water down to parts per trillion levels. Specifically, the researchers developed a method for applying peptides to single walled carbon nanotubes (SWNT) in field effect transistors. "This is a fairly general sensor platform for all kinds of applicatio...

Queen bee promiscuity boosts hive health

...mate" queens and 25 from singly mated queens) with water tainted with spores of the highly virulent bacterium that infects bee larvae and causes the disease American Foulbrood. Sure enough, the more genetically diverse colonies derived from multiple fathers were significantly less affected by the disease...

Climate experts search for answers in the oceans

...the warming of the sea and the modification of the water circulation patterns may cut off or modify some of that primary production, so it is important to know both sea-surface temperature and ocean colour." In order to make the most of all satellite information available on ocean colour and sea-surfac...

Hope for major advance in fighting world killer disease

...c organisms, and is usually spread by contaminated water and poor sanitation. Two particular bacteria , enteropathogenic E.coli (EPEC), which causes a persistent infection lasting more than 14 days, and Shigella, the cause of dysentery - are the most deadly in terms of killing children. They cause only 2...

Ferns provide model for tiny motors powered by evaporation

...thod for powering micro and nano devices with just water or heat. "We've shown that this idea works," said...the cells in the outer wall of the sporangium were water logged, the sporangium remained closed like a fist, storing the spores safely inside. But when the w...

Extreme environment changes fish appearance

...ab on a restricted diet and with slight changes in water temperature. The Amargosa pupfish began to look more like the wild Devils Hole pupfish. "Restricting food availability and raising the temperature just a few degrees shifts morphology dramatically," Lema said. The findings have implications for...

Scientists get best look ever at water-life connection

No one has ever seen exactly how water molecules interact with proteins ?even though water is the essential element for life . . . that is, not until now. Researchers led by Ohio State Unive...

Microbe fixes nitrogen at a blistering 92 C

...ogen both as a dissolved gas and as nitrate. Ocean water that percolates down into the seafloor can pick up...ed nitrogen to revert to its gaseous form. Venting water hotter than 30 C contains very little nitrate so organisms in areas where the subseafloor temperatur...

Extraordinary life found around deep-sea gas seeps

... (UH) ?has spent the last two weeks exploring cold water seeps and other 'chemosynthetic' ecosystems around...eam has also collected samples of the sediment and water surrounding the seeps for chemical analysis and used sonar to study the geological structures lying ...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

...jaw muscles were being injected with harmless salt water in order to cause pain. The questionnaires measure pain and emotion in a standardized way, so that ratings can be compared over time. None of the participants had a history of medical or psychiatric illness, nor of drug addiction or dependence. The 7...

New moth variety disarms plants guarded by selenium

...for removing and dispersing selenium from polluted water and soil. The authors note that such use of native selenium hyperaccumulators or of selenium-enriched agricultural crops--for environmental cleanup or as a source of anti-carcinogenic selenocompounds--may have ecological implications, as is clear fro...

New dwarf buffalo discovered by chance in the Philippines

...ed out to be an extremely unusual species of dwarf water buffalo, now extinct. The new species, described...ve feature is its small size. While large domestic water buffalo stand six feet at the shoulder and can weigh up to 2,000 pounds, B. cebuensis would have sto...

Paramecia adapt their swimming to changing gravitational force

... respond. The researchers placed a vial with pond water and live paramecia inside a high-powered electroma...re less susceptible to a magnetic field than plain water is, so the magnetic field generated inside the vial "pulls" harder on the water than on the cells. I...

Brains can recover from alcoholic damage but patients should stop drinking as soon as possible

...centrations of choline and NAA increased even when water levels and other metabolites did not change significantly. "Our results indicate that early brain recovery through abstinence does not simply reflect rehydration. Instead, the adult human brain, and particularly its white matter, seems to possess ...

Dragonfly's metabolic disease provides clues about human obesity

...ffects in the dragonflies. Dragonflies that drank water containing trace amounts of excretory-secretory substances obtained from live parasites showed effects in two days. Abnormal blood glucose concentrations are a symptom of metabolic syndrome in humans. Marden and Schilder also concluded that insects...

Professors to develop hand-held pathogen testing device

Testing for deadly food, air and water pathogens may get a lot easier and cheaper thanks ...detecting up to 50 microbial threat agents in air, water and food. "This device will give us the ability to measure pathogens in a manner and at a price t...

Study: Living coral reefs provide better protection from tsunami waves

... less drag on the wave." A turbulent mountain of water crashing over a complicated rough surface presented Kunkel with a number of obstacles for her own study -- specifically, how to find a way to express each of these effects with a mathematical formula that a computer could employ to simulate it. Diffe...

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