Atmospheric particles that become acidic through exposure to such pollutants as sulfuric acid can lead to vast increases in the formation of secondary organic aerosols, a new study indicates. Such aerosols are major components of the unsightly haze that hangs over cities and oil refineries and even affects otherwise pristine U.S. national parks.
A report on the research appears in Fridays (Oct. 25) issue of the journal Science. Authors, all at the University of North Carolina at Chapel Hill, are Dr. Myoseon Jang, research associate; doctoral students Nadine M. Czoschke and Sangdon Lee; and Richard M. Kamens, professor of environmental sciences and engineering at the UNC School of Public Health.
"We think this exciting work is potentially very important and so do other scientists we have discussed it with across the United States," said Kamens. "What Dr. Jang has done in our laboratory was to discover an acid-catalyzed process that brings about secondary organic aerosol formation. "She also has found that this under-appreciated reaction may generate five to 10 times more aerosol in the atmosphere than we previously thought," he said. "It appears to explain a number of different kinds of phenomena that lead to aerosol formation."
David Williamson | EurekAlert!
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Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
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In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
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By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
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COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
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'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
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