Tag: "temperature" at biology news
Lake ecosystem critical to East African food supply is threatened by climate change
...rature, while windvelocities have decreased. Those temperature
changes stabilize the water column in lakes, especially in the tropics where, unlike in temperate regions, winter cooling and mixing is absent. The increased stabilitydecreased circulation, hampering the re-supply of nutrients from the deep water to...
Finding dirty bombs and other radiation threats
...in or high humidity conditions, as well as in wide temperature
ranges. So far, the NIST researchers also have found that the calibration of some detectors depends a lot on the exposure rate and energy of the radiation detected. The accuracy rates for 19 different hand-held detectors ranged within plus or minus 5...
Envisat focuses on carbon-rich peat swamp forest fires
...uring infrared wavelengths, AATSR measures surface temperature
and so used during local night for maximum effectiveness - can identify fire hotspots, Siegert explained: "The smouldering peat fires burn on the surface, but their energy release is weaker than other fires, so detecting them represented a particula...
How a little bit of cold can kill a big manatee, and what it might mean for the species
...ater and manatees' limited ability to adapt to low temperature
extremes. The study suggests that the animal's metabolism slows, leading to digestion problems, decreased appetite, and associated weight loss. These events, along with the possible release of certain hormones, weaken manatees' immune systems, makin...
Tips from the Journals of the American Society for Microbiology
... a significant impact on infectious viruses, while temperature
in general had little effect on corresponding genomes. Additionally, the researchers found that infectious particles were more likely to diminish at a faster rate than viral genomes at all temperatures tested in this study. "Thus, we concluded that ...
Satellites will join search for source of Ebola virus
.... "Reliable continent-wide information on surface temperature
is a particular boon," said Simon Hay of the University of Oxford Zoology Department. "These temperature
data would help in discriminating those rainfall events that occur in a window most favourable for t...
First descriptions of Indiana bat maternity roosts in the southern US
... are often exposed to sunlight, and that increased temperature
inside roosts can speed the development of the young," said Loeb. "Sun exposure may be particularly important for the roost we found in the Nantahala National Forest, since it was located at a much higher elevation than any previously reported for th...
Biological clock more influenced by temperature than light
...ting over jet lag may be as simple as changing the temperature
--your brain temperature, that is. That's a theor...ogical clocks of rats and mice respond directly to temperature
changes. Biological clocks, which drive circadian rhythms, are found in almost every living organis...
Cold-climate creatures may be the ultimate survivors of global warming, study finds
...e ability to adjust to larger increases in habitat temperature
than crabs living in the warm coastal waters of Me... noting that a half-degree increase in the Earth's temperature
could be enough to wipe out countless porcelain crabs: Thermal tolerance Stillman's experiment foc...
ORNL wins four R&D 100 awards, pushing total to 116
...d infrared photo-detection device. It runs at room temperature
and can be used in a number of endeavors, including night vision, industrial process monitoring and medical imaging. It also can help firefighters see through smoke and has particularly important uses in the commercial and military sectors, because i...
Air dried sperm could allow home storage
... The dried sperm can then be stored at normal room temperature
or in a normal refrigerator and do not seem to require any other special storage conditions. Just prior to injection by ICSI into an egg, the sperm film can be re-suspended with a large drop of special biological medium (similar to that in which the ...
Indiana University to become NASA base for space biology studies
... of Earth's chilly neighbor, Mars, where the daily temperature
usually tops out around 30 degrees Fahrenheit. Scientists from Princeton University, the University of Tennessee at Knoxville, Pacific Northwest National Laboratory, Lawrence Berkeley National Laboratory, Oak Ridge National Laboratory, the University...
Giant bloom fades, science continues
...ming. Ken Shackel, a professor of pomology, set up temperature
probes to measure heat generated by the plant. Bet... off until 3.30 a.m. the next day, falling to room temperature
by dawn. "I guess we'd have to call this a plant's version of the one-night stand," Shackel said. Th...
Is there an unexpected price for late night high tech excitement?
...on in each subject was measured, as well as rectal temperature
(a physiological marker of circadian rhythm that i...e the experiment, the subjects recorded their oral temperature
approximately every three hours, except during sleep. The peak of the circadian rhythm of oral tempe...
Plant diversity threatened by climate change and buildup of greenhouse gas, study reveals
... ecosystems will respond to predicted increases in temperature
and precipitation caused by the continual buildup ...ed fossil fuel consumption and deforestation: A temperature
increase of 2 degrees F; A 50 percent rise in precipitation; Double the amount of CO2 in the air;...
Fiber-boosted formula for piglets shows promise in battle against infant diarrhea
...olons were evaluated. "There was no change in body temperature
among the piglets, but there was a reduced incidence of diarrhea, and the activity level was maintained for those on the higher fiber diets," Tappenden said. "The control animals and those that were fed the non-fermentable fiber developed severe dia...
Hypothermia helps brain heal after cardiac arrest, finds University of Pittsburgh study
BOSTON, May 30 Cooling body temperature
to levels consistent with hypothermia improves sur..., whereas 75 percent of the animals left at normal temperature
of 37C (98.6F) survived. Furthermore, microscopic brain injury was reduced by half, and some animals...
Why have sex? The answer is not as simple as we thought
...ia respond to different forms of stress, from cold temperature
to the inhibition of protein synthesis. Prof. Stanislas Leibler and Dr. Roy Kishony found that, on average, mutants fare better when they are stressed. "In contrast to the perception that stress always reduces the organism's ability to tolerate muta...
Automated imaging of brain tissue, high-quality glimpses inside arteries
...TFT fabrication technology. (Paper CThM34, New low temperature
femto-second laser annealing method for TFT fabrication technology; Thursday, June 5, 1:00 PM) CLEO/QELS FEATURES By combining a dynamic technical program of new, leading research with special forums emphasizing the topics on the forefront of the i...
New clues emerge about the fate of smog in Sierra Nevada forests
...emical reactions within the forest canopy. As the temperature
cooled going from fall into winter, the amount of hydrocarbons released by the trees decreased, leading to a subsequent decrease in the amount of ozone lost through gas phase chemistry. During the cooler months, more ozone was absorbed by the trees ...
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