Tag: Acoustical Society of America
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Ultrasonic waves that are all around us may cause adverse health effects
While ultrasonic death rays are still a thing of fiction, there is growing evidence that exposure to ultrasonic waves may cause adverse health effects New technologies for mobile devices may use ultrasonic sound waves for a variety of purposes, from charging your phone when you enter your room to collecting data on which advertisements you…
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Researchers Present a New Method of Wirelessly Recharging Medical Device Batteries with Ultrasound
Tune In, Turn On, Power Up Human beings don’t come with power sockets, but a growing numbers of us have medical implants that run off electricity. To keep our bionic body parts from powering down, a group of Arizona researchers is developing a safe, noninvasive, and efficient means of wireless power transmission through body tissue.…
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Ultrasound ‘Making Waves’ for Enhancing Biofuel Production
“This technology could have a payback period of less than one year.” All chefs know that “you have to break some eggs to make an omelet,” and that includes engineers at Iowa State University who are using high-frequency sound waves to break down plant materials in order to cook up a better batch of biofuel.…
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Researchers Design Sensitive New Microphone Modeled on Fly Ear
The new design could be used in applications ranging from hearing aids and cell phones to surveillance and acoustic noise control systems Using the sensitive ears of a parasitic fly for inspiration, a group of researchers has created a new type of microphone that achieves better acoustical performance than what is currently available in…
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First Global Assessment of Land and Water ‘Grabbing’ Published in National Journal
As world food and energy demands grow, nations and some corporations increasingly are looking to acquire quality agricultural land for food production. Some nations are gaining land by buying up property – and accompanying water resources – in other, generally less wealthy countries. Sometimes called “land grabbing,” this practice can put strains on land and…