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Noise in Biological News

Noise pollution negatively affects woodland bird communities, says CU-Boulder study

... study shows the strongest evidence yet that noise pollution negatively influences bird populations, ... . "This is the first study to show that noise pollution causes changes in species interactions ... of Ecology and Evolutionary Biology. "Since noise pollution can be a major cause of declining bird ...

Aluminum-oxide nanopore beats other materials for DNA analysis

... superior mechanical properties, enhanced noise performance and increased lifetime over their ... nanopore structure and could potentially improve noise performance as well." The nanopore sensors ... detection. "Thinner membranes can produce less noise as a molecule travels through the nanopore," said ...

New models question old assumptions about how many molecules it takes to control cell division

... the proper response. As with any control system, noise errors, slip-ups, mis-reads can get in the way ... a mathematical model to explore the roles of noise in controlling the basic events of the cell cycle ... systems. The article, "Exploring the Roles of noise in the Eukaryotic Cell Cycle," is by postdoctoral ...

Singapore-US scientists first to develop revolutionary microchip that uses 30 times less energy

... fact that, unlike conventional designs that view noise as a nuisance, our design concept embraces noise as a "gem" - this novel technology recycles ... boosting the operating voltage to overpower the noise to ensure accurate calculations, leading to ...

A BBVA Foundation project comes up with a system enabling detection of cetacean hearing loss

... species, due, among other reasons, to the noise produced by artificial sound sources. A number of ... and gas extraction too have added their share of noise pollution to the marine environment. To date, ... of the damage caused by human-produced noise in the marine environment, as a first step to ...

156th Acoustical Society of America Meeting, Nov. 10-14, 2008 in Miami

... buried mines underwater? What is the effect of noise in the home? How does the brain deal with sound? ... physics, animal bioacoustics, medicine, music, noise control, and speech. Journalists are invited ... "Apart from road and air traffic noise, and some noise from neighbors, the most ...

Cranking up the volume

... This will increase the amount of background noise in the oceans and could affect the behavior of ... boats and ships. Such human-generated underwater noise has increased dramatically over the last 50 ... It could also increase the amount of background noise that they have to live with. There are no ...

Bats pick up rustling sounds against highway background noise

... would the bats react when the team switched on a noise in one of the two dining areas? First, the team synthesized true white noise before playing the sound in one half of the ... animals were less bothered by the loud traffic noise than they had been by the ...

Unique study shows oil, gas seismic work not affecting Gulf sperm whales

... HOUSTON, Aug. 21, 2008 noise can be irritating and possibly harmful for ... years, there has been concern that man-made noise may be a cause of stress for dolphins, whales and ... but the results of a five-year study show that noise pollution ...

GN Netcom Introduces Innovative Noise Blackout Technology

... Jabra BT530 First Product to Feature noise Blackout(TM) NASHUA, N.H., Aug. 13 /PRNewswire/ ... today unveiled an innovative new generation of noise cancellation technology. noise Blackout(TM) reduces ambient sound without ...

Killer whales, blind bats, discriminating dolphins, mating birds

... release. HIGHLIGHTS IN THIS RELEASE 1) How noise Affects Marine Mammals 2) Birds Changing Their ... 11) Conservation and the Tiger's Roar 1) HOW noise AFFECTS MARINE MAMMALS Effects of sonar and ... behavior. The earliest concern was that elevated noise could reduce the range of communication by ...

Researchers to develop ocean sanctuary 'noise budget' to evaluate potential impact on marine mammals

... substantial evidence that the level of man-made noise is rising. Marine mammals and many fishes are ... of Marine Acoustics, Inc. on modeling ocean noise propagation within the sanctuary. The Gerry E. ... committee on the potential impacts of ambient noise in the ocean on marine mammals. The committee has ...

How is that whale listening?

... models to mimic the effects of underwater noise on an unusual whale species and have discovered a ... of forces such as an earthquake, or in this case noise vibrations, can be accurately predicted. Dr ... revolutionize our understanding of the impact of noise on marine organisms." Since 1968, it has been ...

Videos extract mechanical properties of liquid-gel interfaces

... and gel became unstable in response to mechanical noise (irregularities in the motion of the plates). Such noise occurs in real-world physical systems. Surprisingly, a small amount of this mechanical noise produced a lot of motion at the fluid/gel ...

Healing wounds with lasers, vehicles that drive themselves, other cutting-edge optics

... H. Jeff Kimble of Caltech will describe a new effort to counteract thermal noise and improve the sensitivity of interferometers. He and his colleagues ... slight thermally-induced movement of a mirror's surface owing to thermal noise is accompanied by associated changes in other physical parameters, such as ...

Study compares sound from exploding volcanoes with jet engines

... Diego speeded up the recorded sounds from two volcanoes and uncovered a noise very similar to typical jet engines. These new research findings provide ... of how the large-amplitude signals from eruptions are produced. Jet noise is generated by the turbulent flow of air out of a jet engine. Matoza and ...

Physical activity may strengthen children's ability to pay attention

... flanker test, suggesting that when the environment is more noisy visual noise in this case kids are better able to gate out that noise and selectively attend to the correct stimulus and act upon it." In an ...

Practice as well as sleep may help birds learn new songs

... the role of auditory feedback on the bird's learning, the team used white noise at 100 decibels to prevent the birds from hearing themselves. In ... finding demonstrated the importance of auditory feedback; after the white noise was eliminated, the birds began to learn normally. "There is a very ...

Acoustical Meeting, Nov. 10-14, 2008 in Miami, Florida

... research, psychology, physics, animal bioacoustics, medicine, music, noise control, and speech. Journalists are invited to cover the upcoming ... the nervous system's response to speech particularly in background noise and to emotionally-significant sounds such as the cries of babies. Nina ...

Audience Selected as Silver Winner in This Year's Wall Street Journal Technology Innovation Awards and Winner of the Semiconductors Category

... a voice processor company that enables clear communications anywhere with noise suppression technology based on the intelligence of the human hearing ... companies of the Open Handset Alliance and the only one with advanced noise suppression technology. Investors in Audience include Vulcan Capital, NEA, ...

Sonic Innovations Celebrates 10-Year Anniversary

... and volume adjustments, and access to tools that can control background noise while amplifying speech. Since 1998, Sonic Innovations has developed ... first of their kind clinically proven to increase speech understanding in noise for the hearing impaired. Sonic Innovations, headquartered in Salt Lake ...

Lowly Icelandic midges reveal ecosystem's tipping points

... changes such as those linked to global warming. "It doesn't take much noise to cause big changes in the pattern," says Ives of phenomena, natural or ... can tip the balance of an ecosystem. "Even small amounts of environmental noise cause very different biological processes to dominate. And even if you ...

Neuronal circuits able to rewire on the fly to sharpen senses

... neurons send cease-fire messages to the neighboring neurons, reducing the noise and making it easier to precisely identify a stimulus. This process also ... a large number of neurons initially respond to a stimulus, filtering out noise from other neurons. By filtering out the noise, the stimulus can be more ...

Team of scientists develops non-invasive method to track nerve-cell development in live human brain

... way as algorithms used in submarine sonar equipment filter out all ambient noise save that of other subs. Filtering out noise in the brain enabled the team to demonstrate the presence of the biomarker ...

'Twinkle after-effect' can help retinal patients detect vision loss quickly and cheaply

... that when someone looks at a television screen filled with static noise while covering part of their visual field with a small patch, the formerly patched area is left with a twinkling sensation after the noise is turned off and the person looks at a blank screen. The rest of the ...

US-Mexico border wall could threaten wildlife species

... The scientists say the wall along the U.S.-Mexican border is not the only issue for wildlife. Human activity, vehicular traffic, amplified noise and artificial lighting associated with the barrier can all affect how animals behave. "There is a political reality and a biological reality to ...

Cells use import machinery to export their goods as well

... for the streetlight to be focused on exactly where we're interested," Simon says. "We get the vesicles at the point of fusion without the background noise of everything else going on inside the cell." For the first time, Jaiswal was able to observe individual post-Golgi vesicles as they deliver ...

Toward cheap underwater sensor nets

... are hard at work on analog portions of the underwater communications project, including the transmitter power amplifier and receiver low noise amplifier. "The amplifier works, but it is not yet as efficient as Don Kimball's original design or the early simulations," said electrical ...

Laughing hyenas, wailing levees, the sound of cheese and blaring bagpipes

... a cross-section of diverse disciplines devoted to architecture, underwater research, psychology, physics, animal bioacoustics, medicine, music, noise control, and speech. Journalists are invited to cover the upcoming meeting either onsite in Portland or online through the meeting's World Wide ...

Risk of vibration-induced vascular injuries linked to vibration frequency differences

... either 63, 125 or 250 Hz. One control group of five rats accompanied them to the experimental area, to make sure any results seen were not related to noise or change of locale. A second control group stayed in their home cages, uninvolved in the activity. After the last exposure, the scientists ...

Making a point: Picoscale stability in a room-temperature AFM

... motion of the tip relative to the sample is corrected on the fly by moving the substrate in the opposite direction. This is the same idea as active noise cancellation headphones, but applied to atomic force microscopy, says Perkins. In its most recent work, the JILA team has controlled the probes ...

Vanderbilt scientists invent world's smallest periscopes

... for damaging the engineered cells. According to Janetopoulos, the micropyramids also have a major advantage for single molecule studies. Optical noise is a constant problem when working at the low light levels involved. Being able to pinpoint actual light sources in two or three dimensions allows ...

$300,000 donation from BP includes solar vehicle for UH

... solar panel augments the vehicle's battery system, giving it more operational range. It offers a quiet, yet powerful mode of transportation with no noise and less pollution than most ATVs. The buggy, with standard four-wheel drive, seats up to four passengers and boasts a load capacity of 880 pounds. ...

The 156th Acoustical Society of America Meeting, Nov. 10-14, Miami, Fla.

... to a cross-section of diverse disciplines, including architecture, underwater research, psychology, physics, animal bioacoustics, medicine, music, noise control, and speech. Lay-language papers detail some of the most newsworthy results at the meeting. They are roughly 500-word summaries written ...

BIO-key(R) Awarded PocketCop(R) Contracts From Major Law Enforcement Agencies

... silent, text-based messaging functionality provided significant benefit to St. Paul's police officers monitoring street traffic during the RNC. The noise generated by the large crowds and loudspeakers at RNC events and demonstrations made it next to impossible to hear or communicate clearly via radio. ...

The inaudible symphony analyzed

... in the vicinity are easy to recognise, for example the explosion of a fuel depot near London in 2005. At home, Evers saw a huge peak above the noise on his computer screen. He knew immediately that something big had happened in England. But the main purpose of his work is the detection of ...

Genes that control cell death fingered in age-related hearing loss

... Anatomy. "Right now, there is nothing we can do to treat it or reverse it, so prevention is the focus." Frisina advises avoiding exposure to loud noise wherever possible, and wearing ear protection when working with power tools or hunting, for example. Since many medications can damage hearing, ...

Scientists trace molecular origin of proportional development

... so precise, or is it really so precise? "Instead of discounting the variability of the Bicoid gradient among different embryos, we found this noise to be an advantage of the system," said Dr. Ma, also a professor of pediatrics at the University of Cincinnati College of Medicine. "The amount of ...

Effects of anthropogenic sound on marine mammals -- a research strategy

... global assessment of cetacean species, released in august 2008, the International Union for the Conservation of Nature (IUCN) concluded that ocean noise posed a significant threat. These concerns have reached the larger public through exposure in popular press and media. In spite of growing ...

Grant supports emerging field of massive data analysis and visual analytics

... number of data points in massive data sets. Dimension reduction is essential for efficient processing of high-dimension data sets while removing the noise in the data. Park is especially interested in developing methods for dimension reduction that exploit prior knowledge in the data sets such as ...
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