Tag: "fire" at biology news
National Science Foundation awards $2 million grant to UC Riverside
... because they form a fine fuel that can help carry fire
during the dry season, more so than any of the sta...ills native plants and animals. Once the grass and fire
cycles have been established, native plants can no longer establish themselves, and the conservation...
World's top theoretical physicists converge to consider 'future of physics'
...ived building. Hallways used to end in grey metal fire
doors. Now, the hallway forming the top of the "E" has the old tower with its first floor Founder's Room and second floor two-story library at one end and the divided stairway with its centered French window at the other, and the corridor between ru...
Perceptual decision-making hub pinpointed in human brain
...specialized visual processing areas, where neurons fire
only to the extent that they see certain objects or features, the monkey studies showed. While their brain activity was monitored with functional magnetic resonance imaging (fMRI), twelve healthy subjects pressed buttons to indicate whether they sa...
Globetrotting pollutants turn up on Toronto street
...o have detected migratory pollutants from a forest fire
in Quebec and even particles from a sandstorm in t...d Chemistry. "We happened to know when that forest fire
was happening in Quebec and we realized that this mixture of different particles that we found in do...
An ear for crime
... Neurons only way of distinguishing signals is to fire
repeatedly, either faster or slower, in different temporal patterns. "It is the time difference between pulses that carries the information," Berger says. "This is a coding completely unlike that used by computers, which are collections of ones and z...
University of Texas at Austin researchers identify drug-tolerance mechanism in flies
...chers think that when a drug causes nerve cells to fire
too rapidly, slo levels are decreased to produce... more channels is a way to make the nervous system fire
more excitedly, and decreasing the number of channels would make the nervous system less excited," A...
New forest technologies for small-diameter timber
...ways to effectively use forest resources to reduce fire
risk and restore forest health. Overstocked stands...ross the West in the early 1900s. Since that time, fire
exclusion and management practices have resulted in overstocked stands," explains Vikram Yadama, an ...
Researchers show how botulism toxin ensnares its target
...omponents of the machinery that nerve cells use to fire
bursts of neurotransmitter chemicals to trigger neighboring nerves or activate muscle cells. Without SNAREs, nerve function is blocked. Neurotoxin proteases that act by cleaving SNARE proteins are highly specific for their targets meaning that each ...
Dwarf mistletoe reveals its sexual secrets
...only water-pump seed ejection system. One that can fire
a seed up to a dazzling 20 meters (65 feet). So who are you calling a dwarf now? "The dwarf species I studied in Manitoba has a gestation period of one-and-a-half years, after which the seed blasts out of the fruit. This extreme buildup of water pr...
Shots fired at Bayonne range prove smart gun technology works
...able and multiple barrels can be made available to fire
a range of projectiles of varying calibers from the same handgun....
Human see, human do
...ystem contains mirror neurons or brain cells which fire
up both when we perform an action and when we observe it, the new study shows that this system is fine tuned to each person's 'motor repertoire' or range of physical skills. The mirror system was first discovered in animals and has now been identifie...
Flame retardant exposure linked to house dust
...effective flame retardants, greatly increasing the fire
safety of products ranging from carpeting and cushions to televisions, computers and coffee makers. In recent years, however, concerns have grown with evidence that PBDE concentrations are increasing rapidly both in the environment and in human tissu...
Researchers find how protein allows insects to detect and respond to pheromones
...ds to the olfactory neuron, sparking the neuron to fire
a small electrical signal called "spontaneous acti...s have also linked OBPs to insect behavior. A 2002 fire
ant study suggested a role for OBPs in worker ants' ability to recognize queens and regulate the num...
Arid Australian interior linked to landscape burning by ancient humans
...y sea from Indonesia about 50,000 years ago, using fire
as a tool to hunt, clear paths, signal each other ...and protected and are therefore more vulnerable to fire
-- went extinct at about that time. Natural fires resulting from summer lightning strikes have pla...
First view of a world without fire
...not "fit" the climate. If true, this suggests that fire
has a major effect on the ecosystems of the world....different would the world look if we could 'switch fire
off'? A new type of ecosystem model, Dynamic Global Vegetation Models (DGVMs) developed to answer q...
Please, do disturb
...shold amount, then they give it their all: neurons fire
and plankton blooms. "Similarly, excitable non-linear behaviour is also found in chemical reactions", explains Zhou, "where an external pressure or light can push a reaction down one route instead of another." Zhou and his colleagues have found that...
'Man the Hunter' theory is debunked in new book
...rly humans to consume a large amount of meat until fire
was controlled and cooking was possible. Sussman p...llion years ago. And there wasn't good evidence of fire
until after 800,000 years ago. "In fact, some archaeologists and paleontologists don't think we had ...
Brain controls robot arm in monkey, University of Pittsburgh researcher reports at AAAS
...has thousands of nerve cells, called neurons, that fire
like Geiger counters. These neurons are sensitive ...ement. Because of the sheer volume of neurons that fire
in concert to allow even the most simple of movements, it would be impossible to create probes that ...
FSU anthropologist leads incredible journey through 'hobbit' brain
...trigued by the sophisticated tools and evidence of fire
that archaeologists uncovered near the remains. With funding from the National Geographic Society, Falk and a team at Washington University Mallinckrodt Institute of Radiology in St. Louis used a process to reproduce the h...
Researchers make surprise discovery that some neurons can transmit three signals at once
...rgh discovered that immature rat brain cells could fire
a simultaneous three-punch salvo three neurotransmitters bursting out of a single cell -- it was a finding they knew would excite more than just neurons. Just as surprising, they report in the lead article of this month's Nature Neuroscience , is ...
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