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Domain: pnl.gov
Stories and comments across the archive that link to pnl.gov.
Stories · 10
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Self-Healing Ceramics for Nuclear Safety
Roland Piquepaille writes "Pacific Northwest National Laboratory (PNNL) researchers have used supercomputers to simulate how common ceramics could repair themselves after radiation-induced damages. This is an important discovery because 'materials that can resist radiation damage are needed to expand the use of nuclear energy.' These ceramics, which are able to handle high radiation doses, could improve the durability of nuclear power plants. They also might help to solve the problem of nuclear waste storage. But read more for additional references about how this research could improve nuclear safety." -
Personal Weather Stations Helping With Weather Forecasting
Weather Storm writes "Weather information from thousands of personal weather stations are being used for weather forecasting by several private and government agencies, including the National Oceanic and Atmospheric Administration (NOAA) and the Department of Homeland Security (DHS). The Citizens Weather Observation Program (CWOP) was created by a few amateur radio operators experimenting with transmitting weather data with packet radios, but it has expanded to include Internet-only weather stations as well. As of September 2007, nearly 5,000 stations worldwide reported weather data regularly to CWOP's FindU database. The weather data is forwarded every 15 minutes to NOAA's Meteorological Assimilation Data Ingest System (MADIS), checked for temporary and spatial consistency, than utilized by computer forecast models and internal forecast verification programs. In a Febuary 2007 report (PDF) DHS listed CWOP as a national assets to the 'BioWatch' Network, stating that data from personal weather stations could be useful in weather forecasts for hazardous releases. In 2007, the FindU server received 422,262,687 weather reports which is a 29.5% increase over 2006." The personal weather stations certainly come in stylish shapes. -
Cleaning Uranium Waste with Bacteria
Roland Piquepaille writes "Nuclear bombs can kill people even if they're not used. In the U.S. alone, the Department of Energy estimates that more than 2,500 billion liters of groundwater are contaminated with uranium as a consequence of nuclear weapons production. In "Uranium 'pearls' before slime," scientists from the Pacific Northwest National Laboratory (PNNL) say they discovered that some common bacteria could "convert deadly heavy metal into less threatening nano-spheres." In fact, these bacteria can convert soluble radioactive uranium into a non-toxic solid form called uraninite. Still, more research needs to be done before using these bacteria on a large scale, but it's a step in the good direction. Read more for additional references and photos showing how Shewanella oneidensis can help us to decontaminate groundwater at nuclear waste sites." -
Bacteria Can Build Nanowires
Roland Piquepaille writes "Researchers at the Pacific Northwest National Laboratory (PNNL) have discovered that under certain conditions, some very common bacteria can form nanowires. These bacteria were able to produce nanowires as small as 10 nanometers in diameter, but which can reach hundreds of microns in length. What is interesting here is that these nanowires are electrically conductive ones. This means that bacteria could be used to build microbial fuel cells or bacteria-powered batteries. As one researcher said, 'Earth appears to be hard-wired.'" -
'Cooking' Carbon Nanotubes Like Spaghetti
Roland Piquepaille writes "Scientists from the Pacific Northwest National Laboratory (PNNL) have developed a technique to force a variety of enzymes to self-assemble layer-by-layer on carbon nanotubes (CNTs) with the help of noodle-like polymer molecules. In 'A biosensor layered like lasagna,' the researchers say that this technique can be applied to a wide range of applications. In particular, it will be possible to build other biosensors "that react specifically with other biological chemicals, environmental agents or even microbes." Read more for additional details and the most spectacular scientific image of the month." -
Fastest US Supercomputer Runs Linux
jgercken writes "The Department of Energy's Pacific Northwest National Laboratory has brought online a 11.8 teraflops supercomputer based on the Linux operating system, comprised of ~2,000 Itanium processors, and assembled by HP. Touted to be the fastest unclassified computer in the US, its main duties will be atmospheric chemistry, systems biology, catalysis and materials science." -
Fastest US Supercomputer Runs Linux
jgercken writes "The Department of Energy's Pacific Northwest National Laboratory has brought online a 11.8 teraflops supercomputer based on the Linux operating system, comprised of ~2,000 Itanium processors, and assembled by HP. Touted to be the fastest unclassified computer in the US, its main duties will be atmospheric chemistry, systems biology, catalysis and materials science." -
$24.5 Million Linux Supercomputer
An anonymous reader wrote in to say "Pacific Northwest National Laboratory (US DOE) signed a $24.5 million dollar contract with HP for a Linux supercomputer. This will be one of the top ten fastest computers in the world. Some cool features: 8.3 Trillion Floating Point Operations per Second, 1.8 Terabytes of RAM, 170 Terabytes of disk, (including a 53 TB SAN), and 1400 Intel McKinley and Madison Processors. Nice quote: 'Today's announcement shows how HP has worked to help accelerate the shift from proprietary platforms to open architectures, which provide increased scalability, speed and functionality at a lower cost,' said Rich DeMillo, vice president and chief technology officer at HP. Read Details of the announcement here or here." -
$24.5 Million Linux Supercomputer
An anonymous reader wrote in to say "Pacific Northwest National Laboratory (US DOE) signed a $24.5 million dollar contract with HP for a Linux supercomputer. This will be one of the top ten fastest computers in the world. Some cool features: 8.3 Trillion Floating Point Operations per Second, 1.8 Terabytes of RAM, 170 Terabytes of disk, (including a 53 TB SAN), and 1400 Intel McKinley and Madison Processors. Nice quote: 'Today's announcement shows how HP has worked to help accelerate the shift from proprietary platforms to open architectures, which provide increased scalability, speed and functionality at a lower cost,' said Rich DeMillo, vice president and chief technology officer at HP. Read Details of the announcement here or here." -
Fuel Cells For (Military) Portable Computing
SEWilco writes: "A 2-3 pound fuel cell is being developed to power wearable military systems for a week." 2 to 3 pounds may sound like a lot, but it gets more reasonable when you consider that it means not carrying a conventional battery or an AC adapter around. Of course, you may not be able to take your battery onto an airplane, though ...