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Tag: "heat" at biology news

“Nano-scissors?laser shows precise surgical capability

...issue. Usually, conventional lasers usedin surgery heat the area to be cut, then cut it, but this heighten...use it happens sofast, there isn’t enough time for heat to diffuse out, so we don’tdamage anything. The pulse’s very short length makes the photons in thela...

New research indicates a 'troubled' greenhouse is brewing

...blindness are less likely to be in our future than heat stroke and malaria," Retallack asserts. "Mint julep, anyone?" Buried soils have long been known as sources of evidence of past rainfall, but Retallack says they also can be used to determine the seasonality of rainfall as well as the amount of rainf...

LUCA technologies confirms real-time methane generation

... environments and many species are known for their heat tolerance. Thermatoga microorganisms are known to ... by the introduction of nutrients or suppressed by heat sterilization or the introduction of oxygen, Luca has shown that radio-labeled CO2 (carbon dioxide) ...

Researchers discover molecular mechanism that desensitizes us to cold

...cal information to help us understand how we sense heat and cold and from that to expand our understanding of temperature regulation," said Dr. Logothetis. "Additionally, because the region of this receptor that interacts with PIP2 is found in many similar membrane proteins, we now have a new lead in inve...

Stem Cell Research Shows Potential for Replacing Tissue Damaged in Heart Attacks

...ytes, which are found in the myocardium tissue, or heat muscles, that helps pump the chambers of the heart. “After a patient has a heart attack, significant numbers of these cardiac myocytes die, and the damaged heart muscle is replaced by scar tissue that isn’t able to contract and help the heart beat....

McGill researchers shed light on formation of carcinogen in food

... when amino acids or sugars are broken down by the heat of cooking," explains Dr. Yaylayan. "Normally, furan is a volatile chemical which tends to quickly evaporate. However, when it cannot escape for some reason, for example if it is in sealed cans or jars, then it remains present in the food for some ti...

Taking the piste out of Alpine vegetation

...cularly important as ski resorts begin to feel the heat of climate change, developing higher altitude runs and using more artificial snow to keep skiers happy. As this happens, Wipf and her co-workers want ski resorts to become more environmentally sensitive. "We recommend that environmental goals should...

Activation of thermoreceptors mediates raw garlic's burning pungency

...ds: TRPV1 is known to respond to noxious (painful) heat and to the pungent component of chili peppers, whe... taste), which is experienced, for example, in the heat of chili peppers or the coolness of peppermint. Both TRPV1 and TRPA1 are found in pain-sensing neuro...

Too much water may be as dangerous as too little during long-distance athletic events

...r consumption is necessary to prevent illness from heat and to maintain performance levels. It is also cl...ody types and with varying degrees of training and heat acclimatization. ...

Bush, Cheney and Rumsfeld are now species of slime-mold beetles -- but strictly in homage

...r consumption is necessary to prevent illness from heat and to maintain performance levels. It is also cl...ody types and with varying degrees of training and heat acclimatization. ...

New design : complete

...r consumption is necessary to prevent illness from heat and to maintain performance levels. It is also cl...ody types and with varying degrees of training and heat acclimatization. ...

Molecular thermometers on skin cells detect heat and camphor

...temperatures. "Are the TRPV3 proteins involved in heat sensation in the living mammal?" says Patapoutian....ence is that TRP channels are activated by thermal heat within a particular temperature range--from the extremely cold to the extremely hot. TRPV3, for inst...

NASA probe could reveal comet life, scientists claim

... subsurface ponds or lakes form transiently due to heat penetrating the exterior crust. We can thus expect biology on comets to have similarities with antarctic biology," added Professor Wickramasinghe. ...

Researchers make headway in mystery of migraines

... along nerve cells. Like an air conditioner in the heat of summer, the sodium pump is a massive energy hog, consuming around 30% of the energy produced by the cell in order to perform this vital cellular process. Of particular interest in this study is that some mutations cause migraines by reducing sodi...

Modified collagen could yield important medical applications

... scientists have altered collagen by using intense heat or chemical reactions, techniques that may damage the protein or limit its safe use in humans. Yu's method, however, requires only physical mixing of collagen with even smaller molecules called collagen mimetic peptides. "That's the beauty of this,"...

Unusual antibiotics show promise against deadly 'superbugs'

... scientists have altered collagen by using intense heat or chemical reactions, techniques that may damage the protein or limit its safe use in humans. Yu's method, however, requires only physical mixing of collagen with even smaller molecules called collagen mimetic peptides. "That's the beauty of this,"...

Going To Extremes To Improve Human Health

...ular interactions in the skin during environmental heat stress. In the effort to understand why young women are more susceptible to fainting than men, he also studies how estrogen and progesterone influence blood pressure regulation. Minson is the winner of a 2005 American Physiology Society's Outstandin...

Woods Hole Research Center plans controlled burn in Amazon rainforest

...omparison with our detailed ground measurements of heat and intensity, under the varying but well-measured forest canopy. 'Hot pixel' data from satellites have long been used to detect the presence of fires on the landscape, but it has been difficult to get accurate qualitative information from these sens...

Elevated temperature enhances success of viral cancer therapy

...YX-015 replication. Interestingly, when a cellular heat shock response was induced in the resistant tumor ...function was restored. Therefore, induction of the heat shock response could rescue ONYX-015 replication in resistant tumor cells. According to Dr. O'Shea,...

Plant pathologists evaluate eco-friendly alternatives to methyl bromide

...il solarization, a technique that captures radiant heat energy from the sun, is one non-chemical alternative to methyl bromide. Another non-chemical alternative is the use of biological agents to enhance disease resistance such as plant growth-promoting rhizobacteria (PGPR), which are beneficial soil bact...

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