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Tag: "noise" at biology news

Termites feed through good vibrations

...y effect" of signal processing ?how to ignore most noise but have some signals that trigger attention ?that may prove useful in artificial intelligence. CSIRO entomologist Theo Evans says laboratory experiments have found that termites use their ability to detect vibrations to determine which food source ...

The secret lives of whales

...tivities enter an area. Every decade the amount of noise is doubling. “Whales have very traditional feeding grounds and their migratory routes along coastlines have become incredibly noisy, urbanized habitats,?Clark explains. “Acoustic smog is shrinking their world.?/p> The Whale in the Coal Mine ?Cata...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...en noon and midnight, so all the cooking and major noise in the camp has to be done by 2 p.m.," O'Connell-R...dy, we realized that there were other things, like noise and wind, that we hadn't taken into account," O'Connell-Rodwell says. "Salinas is a farming area wit...

Building a protein name dictionary from full text: a machine learning term extraction approach

...It is also computationally efficient and robust to noise commonly found in full text material. We use the method to create a protein name dictionary from a set of 80,528 full text articles. Only 8.3% of the names in this dictionary match SwissProt description lines. We assess the quality of the dictionary ...

Random gene expression may drive HIV into hiding

...hat investigate the consequences of such molecular noise on cellular function. The authors [present] a scen...nderstand the functional role that gene expression noise potentially plays in the progression of disease." ...

A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs

...ite noise." Again, the snake-like pattern of white noise caused more eggs to hatch prematurely than did the rain-like white noise. "These experiments don't rule out the possibility that the frog eggs use other cues," she says. "But clearly, differences in temporal patterns are enough to affect the percepti...

Researchers develop new method for facile identification of proteins in bacterial cells

...f time and resources on eliminating the background noise to find the signal, our method increases the signal upfront so that it stands out above the background noise. By forcing an up-regulation of enzyme expression in the bacterium of interest, our target can be identified amidst all of the other cell com...

Researchers seek to discover what really happens when a virus enters the body

... of almost $400,000, Bell plans to next remove the noise from these low-resolution images, creating what sh...s a clean immuno-fluorescent intensity signal. The noise she refers to is not audible to the human ear. From an electrical engineering standpoint, noise in t...

Virtual animal shelters ?How the Internet is transforming the experience of pet adoptions

...amily. And, the Internet dog search shuts out the noise and the smells associated with a county shelter. However, Garcia adds that the drawbacks are that pet postings are not interactive, and chemistry between the dog and its new owner is a vital part of the selection process. Garcia's paper is part of a...

Grasshopper love songs give insight into sensory tuning

...researchers first played various snippets of white noise to isolated grasshopper auditory nerves and measured the electrophysiological signals reflecting the reactions of the auditory neurons to those sounds. These experiments revealed the distribution of stimuli called the "optimal stimulus ensemble" (OSE...

Researchers quantify more noise in gene expression

... variation in gene expression. This second type of noise results because no two genetically identical cells...n keep the same time. The measurement of extrinsic noise was based on experiments involving baker's yeast, Saccharomyces cerevisiae, but the phenomenon and t...

Phenotype is influenced by nature, nurture and noise

...s and behaves, and now UCSD scientists report that noise could also be an important factor in determining p...ulation that couldn't otherwise be predicted. Such noise is routinely described by cell biologists who record large phenotypic differences between supposedly...

Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool

... the form of an email. This data loss, ascribed to noise in the communication channel, is checked by counting the number of 1's in the message. If this number is odd, then the last bit is set to 1; otherwise it is set to 0. By comparing the number of 1's on the sending end with the value of the last bit on...

Georgia Tech accelerates drug discovery with new IBM supercomputing cluster

...ech has deployed "Cool Blue" on 12 racks, reducing noise and easing the burden on existing air conditioning units. The Rear Door Heat eXchanger can reduce first-time installation costs by as much as 40 percent while lowering energy costs by almost 15 percent. The cluster solution helps increase the overal...

UC Riverside psychologist explores human perception, finds 'wow factor'

...the locations of objects by listening to echoes as noise bounces off them. Other test subjects have used room echoes to figure out where they are on campus -- blindfolded. Rosenblum's research explores speech, faces and hearing from an ecological perspective. Ecological psychologists study the ways humans...

Nanopore method could revolutionize genome sequencing

... and turning of the DNA strand introduced too much noise into the signal being recorded. The new idea takes advantage of the electric field that drives the current perpendicular to the DNA strand to reduce the structural fluctuations of DNA while it moves through the pore, thus minimizing the noise. "If ...

With cochlear implants, earlier use leads to better speech

... "OK, now the people goes to stand there with that noise and now -- Woo! Woo!" and "OK, the train's coming to get the animals and people." The testing session was part of research that indicates the earlier a deaf infant or toddler receives a cochlear implant, the better his or her spoken language skills...

Device effective in zapping the pain out of migraines

... study reported a significant reduction in nausea, noise and light sensitivity post treatment. "Perhaps t...isodes in patients using the TMS occurring without noise sensitivity. Work functioning also improved, and there were no side effects reported," Mohammad said...

Dolphins at risk

... pile driving. The frequency range of pile driving noise could interfere with their ability to communicate,...into the reactions of marine mammals to industrial noise to help mitigate future effects in relation to the increase in off-shore industry, such as the const...

South Pacific plant may be missing link in evolution of flowering plants

... pile driving. The frequency range of pile driving noise could interfere with their ability to communicate,...into the reactions of marine mammals to industrial noise to help mitigate future effects in relation to the increase in off-shore industry, such as the const...

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