Tag: "cold" at biology news

Good news: As you age, leg blood vessels adapt so you can still exercise without fainting

...to constrict less (relative to younger men) during cold stimulation, based on previous research in older animals and humans under resting conditions," Proctor said. But leg vessels of the older men constricted more, perhaps as a compensation for their reduced level of cardiac output. This indicates that ...

Old bones unearth new date for giant deer's last stand

...er, previously thought to have been wiped out by a cold spell 10,500 years ago, instead survived well into... we have yet to solve. "A double-whammy of intense cold spells around 20,000 and 10,500 years ago had already taken their toll on these striking beasts. The...

VitalSense(R) - Wireless vital signs monitoring

...he battlefield or in the air, under extreme hot or cold temperatures, VitalSense delivers real time critical temperature data to improve the health and safety of our troops. Other Applications VitalSense proved to be a real lifesaver in a recent study of wildland firefighters in Montana. The study was ...

Channel protein converts vibrations to electrical signal

... channel is activated by such stimuli as painfully cold temperatures and pungent chemicals like mustard, cinnamon oil, and wasabi, which seemed incompatible with mechanical activation in the ear. The distribution of TRPA1 was one of the first clues that TRPA1 might indeed be the channel the researchers w...

UCSD researchers find effective treatment for unusual fever syndrom caused by cold exposure

...ber of people who have a condition called familial cold autoinflammatory syndrome (FCAS), in which individ...joint pain and flu-like symptoms after exposure to cold conditions as mild as an air-conditioned room or fall breeze. The disorder became a hot protocol fo...

Sex versus survival: A tradeoff at geographical range limits

...unction such as survival. Hence, plants growing in cold climates appear to have made an evolutionary "tradeoff" between sexual reproduction and enhanced survival, says Dr. Eckert. The doubled-edged nature of these sterility mutations can cause them to spread quickly in northern populations where sex is no...

Small seasonal changes can lead to big flu outbreaks

...n of why influenza epidemics take place in the few cold months of winter remains unanswered. Is it the change in the weather? The return to school? Or increased viral production under winter conditions? The answer to the increase of flu cases may be extremely minute seasonal changes, says David Earn of...

'Blind' cells see the light; maybe someday humans will, too

...Your brain would be confused, like feeling hot and cold at the same time," he said. "Electrodes would have this problem, too, indiscriminately stimulating on and off cells." One solution, Kramer said, is to re-engineer a sodium channel to function just the opposite of the mutated potassium channel, then t...

Researchers probe marine mysteries off the Alaskan coast

... the scientists also discovered previously unknown cold methane seeps and biological communities that exist in such environments. The seeps, found 3,300 meters below the water's surface, were unlike others that have been studied on the Pacific margin. Though the researchers focused on worms, crustac...

Census of Marine Life - Discoveries and Highlights 2004: Scientists add 4m+ records, 13,000 species

...ry, and biology of deep-sea hydrothermal vents and cold seeps. A suspected new species of clam that draws life from methane hydrates was documented off the coast of Chile, while a new species of minute mollusk was discovered in vents in the Indian Ocean. Seeing the Ocean as Its Inhabitants Do Fifty...

Injectable gel could speed repair of torn cartilage

...into a gel, to making Jell-O. But instead of using cold temperature for gelation, this technique uses light, which he says is a much more rapid and controlled process. Dont look for the gel anytime soon, he warns, as the research is in its early testing stages and could take at least five years before its...

U. of Colorado research team discovers life in Rock Glacier

...es or a few feet a year, they require an extremely cold environment, large amounts of rock debris and enough of a slope to allow them to slide. "This is a very surprising finding, something we did not expect," said Williams. "The upshot is that we have shown that rock glaciers are not biological desert...

Research team discovers first evidence of microbes living in a rock glacier

...ew feet a year, rock glaciers require an extremely cold environment, large amounts of rock debris and enough of a slope to allow them to slide. Williams said the microbial "signature" discovered by the team in the rock glacier, located in the Green Lakes Valley watershed 30 miles west of Boulder, Colo., ...

Ocean colour satellites guide research ship through South Pacific's watery desert

... end of its cruise, L'Atalante sailed in the rich, cold and green waters of the Chilean 'upwelling'. This ...urface layer off the South American coast, leaving cold and nutrient-rich waters to well up in their place. The result is a chlorophyll concentration exceed...

Queen's discovery sheds new light on ancient temperatures

...ikaite forms in shallow water on the sea bottom at cold temperatures and melts when brought to the surface...iggered the enormous ice ages that left the oceans cold enough for the formation of this mineral? One controversial theory known as "The Snowball Earth" hy...

Predator fish heat their eyes to track prey

...ean predators. Swordfishes, which hunt in water as cold as 3C (about 37F), can maintain their brain and eye temperatures 10C15C (18F 27F) above ambient temperatures by using a specially adapted heating organ in muscle next to their eyes. The biological significance of this has been a mystery. Now, however...

The Cochrane Library Newsletter, 2005, Issue 1

...m within 10 minutes of birth minimises the risk of cold stress and decrease the incidence of hypothermia. The Cochrane authors highlight good practice guidlines and recommend using interventions such as plastic wraps, skin-to-skin contact and transwarmer mattresses. ------------------------------ Haloper...

Weight-loss and exercise study compares center- and home-based programs

...was a challenge," Brewer said with a laugh. "I ate cold meals for the first few weeks." Brewer has lost more than 23 pounds and has gained confidence in her ability to stick with a new way of eating. She also has realized that the center-based program would never have fit into her schedule. Joy Ungerer, ...

Novel sulfide-binding mechanism found in deep-sea tubeworms

...lood. Tubeworms living near hydrothermal vents and cold seeps in the world's oceans must adapt to sulfide levels that would prove lethal to most aquatic life while simultaneously providing hydrogen sulfide molecules to symbiotic bacteria within their bodies. A Penn State research team, in collaboration w...

Scientists discover how climate change causes the simultaneous boom or bust of multiple populations

...mb onto the stalks of heather. Wet and relatively cold Mays followed by warm and relatively dry Julys result in an outbreak of nematodes and so, when the grouse eat the infested heather, they rapidly become diseased. "In this study we now show that large-scale weather conditions directly affect transmiss...

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(Date:8/27/2014)... abandoned each year in U.S. waters and become what ... fish, crabs, and other species such as turtles. These ... watermen who depend on the resources--losses that are largely ... The report, published in the Marine Pollution Bulletin ... the derelict fish trap problem, and so-called "ghost fishing," ...
(Date:8/27/2014)... A growing number of studies have shown ... the pathogenesis of Parkinson,s disease. Previous studies ... Medical University in China have shown that ... injury, reduced divalent metal transporter 1 expression, ... substantia nigra of rotenone-induced Parkinson,s disease rats. ...
(Date:8/27/2014)... University of Adelaide research has shown that piglets can ... birthing frequency. , The outcome of the study at ... Animal Reproduction Science , is an important finding for ... welfare without loss of production. , "Sows don,t usually ... on heat after their piglets have been weaned," says ...
Breaking Biology News(10 mins):NOAA's Marine Debris Program reports on the national issue of derelict fishing traps 2Piglet weaning age no bar to litter frequency 2
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