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Back to EurekAlert! A Service of the American Association for the Advancement of Science

 

Features Archive

Showing stories 76-100 out of 529 stories.
<< < 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 > >>

17-Jul-2012
Special report: Graphics processing units speed results in extreme-scale supercomputers
Can scientists and engineers benefit from extreme-scale supercomputers that use application-code accelerators called GPUs (graphics processing units)? Comparing GPU accelerators with today's fastest central processing units (CPUs), early results from diverse areas of research show 1.5- to 3-fold speedups for most codes. That acceleration means increased realism of simulations and decreased time to results. A special report details these findings.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

12-Jul-2012
Idaho researcher building used nuclear fuel sensor
Much of the 6,200 metric tons of used nuclear fuel generated by US power plants over the last 40 years is stored safely in giant stainless steel casks. Darryl Butt, a Boise State University professor, is part of a team researching whether it can be stored that way for at least 60 more.

Contact: Kortny Rolston
208-526-0962
DOE/Idaho National Laboratory

21-Jun-2012
Small worlds come into focus with new Sandia microscope
Paul Kotula recently told a colleague that Sandia's new aberration-corrected scanning transmission electron microscope (AC-STEM) was like a Lamborghini with James Bond features.

Contact: Sue Holmes
sholmes@sandia.gov
505-844-6362
DOE/Sandia National Laboratories

7-May-2012
NREL catalyst brings drop-in fuels closer
We live in a petroleum-based society, and the oil we use comes from plants that were buried eons ago and changed under pressure and high temperatures. As countries across the globe face dwindling oil supplies and the environmental impacts of tapping hard-to-process shale oil, the question arises: is there a greener way to replicate Mother Nature?

Contact: Heather Lammers
303-275-4084
DOE/National Renewable Energy Laboratory

17-Apr-2012
New nanoparticle technology cuts water use, energy costs
Nuclear and coal power plants are some of the thirstiest machines on earth. The turbines that spin inside of them to generate electricity require tons and tons of steam, and all of that water has to come from somewhere.

Contact: Jared Sagoff
media@anl.gov
630-252-5549
DOE/Argonne National Laboratory

20-Mar-2012
New catalyst for safe, reversible hydrogen storage
A new catalyst reversibly converts hydrogen gas and carbon dioxide to a liquid under very mild conditions, with applications for efficient, safe storage and transport of hydrogen fuel.

Contact: Karen McNulty Walsh
kmcnulty@bnl.gov
631-344-8350
DOE/Brookhaven National Laboratory

29-Feb-2012
Climate scientists compute in concert
Researchers at Oak Ridge National Laboratory are sharing computational resources and expertise to improve the detail and performance of a scientific application code that is the product of one of the world's largest collaborations of climate researchers. The Community Earth System Model couples components of atmosphere, land, ocean, and ice to reflect their complex interactions. By continuing to improve science representations and numerical methods in simulations, and exploiting modern computer architectures, researchers expect to further improve the CESM's accuracy in predicting climate changes.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

29-Feb-2012
Computation proves predictive capabilities of nuclei through fluorine-14 simulation
Aa team led by Iowa State University physicist James Vary used Oak Ridge Leadership Computing Facility and Argonne Leadership Computing Facility resources to predict the behavior of fluorine-14, a relatively unknown isotope. It published its predictions in Physical Review C in February 2010. Six months later, a group of researchers at Texas A&M University's Cyclotron Institute performed an experiment producing fluorine-14, and the results nearly mirrored those of Vary's group.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

8-Feb-2012
Computer scientists collect computing tools for next-generation machines
Researchers using the Oak Ridge Leadership Computing Facility's can foresee substantial changes in scientific application code development. The OLCF's new supercomputer, Titan, will use a hybrid architecture of conventional, multipurpose CPUs and high-performance GPUs. The machine will supplant the OLCF's current fastest supercomputer, Jaguar, a Cray XT5 using an entirely CPU-based platform. Members of the OLCF's Application Performance Tools group understand the challenge. Their goal is to make the transition as smooth as possible.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

26-Jan-2012
Nanotube 'glow sticks' transform surface science tool kit
Many physical and chemical processes necessary for biology and chemistry occur at the interface of water and solid surfaces. Researchers at Los Alamos National Laboratory publishing in Nature Nanotechnology have now shown that semiconducting carbon nanotubes -- light-emitting cylinders of pure carbon -- have the potential to detect and track single molecules in water.

Contact: Nancy Ambrosiano
nwa@lanl.gov
505-667-0471
DOE/Los Alamos National Laboratory

27-Dec-2011
Materials modeling shows big future for boron nitride nanoribbons
Alejandro Lopez-Bezanilla at Oak Ridge National Laboratory studies a proposed graphene substrate: boron nitride. Graphene, which is carbon in the form of freestanding 1-atom-thick sheets, is a natural for next-generation computer chips, communications equipment, and solar energy devices. Electrons flow through the material at an astonishing 1 million meters per second. To live up to its potential, however, graphene needs support. On its own, its edges wrinkle, tear, or roll up.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

7-Dec-2011
Home sweet, energy efficient, home
Two new research facilities at the Department of Energy's Pacific Northwest National Laboratory will serve as a test bed for studying energy efficient and smart homes.

Contact: Anne Haas
anne.haas@pnl.gov
509-375-3732
DOE/Pacific Northwest National Laboratory

5-Dec-2011
Big business and big science partner in computing to speed products to market
Jack Wells spoke about collaborative opportunities in high-performance computing at the Oak Ridge Leadership Computing Facility. He highlighted pathways by which industrial users can gain access to supercomputers. Approximately 60 percent of time available on Jaguar, America's fastest supercomputer, is allocated through the Innovative and Novel Computational Impact on Theory and Experiment program, whereas 30 percent is allocated through the Office of Advanced Scientific Computing Research Leadership Computing Challenge and 10 percent through Director's Discretion.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

29-Nov-2011
Scientist wins energy award at technology event
Xin Zhao has won a World Technology Network award in the individual Energy category for innovative work of "the greatest likely long-term significance" in his field. Zhao designed and patented a supercapacitor that would use graphene. The invention could someday see batteries in electric vehicles and similar devices boosted or replaced by high-power, high-capacity, fast-charge/discharge energy storage systems using graphene.

Contact: Kandice Carter
kcarter@jlab.org
757-868-0742
DOE/Thomas Jefferson National Accelerator Facility

17-Nov-2011
'Colony' software speeds up high-performance computing processes
As the number of processors continues to increase in leadership-class supercomputers, their ability to perform parallel computation -- doing multiple calculations simultaneously -- becomes increasingly important. The surge in machine size and complexity has led the Oak Ridge Leadership Computing Facility computer scientists to try new and interesting strategies to keep large systems running at the highest efficiency. Their efforts have nearly tripled performance for synchronizing collective operations.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

9-Nov-2011
Farm fields could yield jet fuel of the future
NREL is helping develop a process to cost effectively convert cellulosic biomass into a replacement for petroleum-based aviation fuel.

Contact: Heather Lammers
303-275-4084
DOE/National Renewable Energy Laboratory

26-Oct-2011
Berkeley Lab project in India to measure impact of pollution on cool roofs
With the aid of rooftop instruments, satellite images, an airplane and a balloon, Berkeley Lab scientists are conducting the first-ever study to determine how pollution impacts the efficacy of white roofs in cooling the planet. The yearlong project in northern India will also be the first to take physical measurements to characterize the cooling and climate effects of white roofs.

Contact: Julie Chao
JHChao@lbl.gov
510-486-6491
DOE/Lawrence Berkeley National Laboratory

3-Oct-2011
Argonne scientist energizes quest for lost Leonardo da Vinci painting
Perhaps one of Leonardo da Vinci's greatest paintings has never been reprinted in books of his art. Known as the "Battle of Anghiari," it was abandoned and then lost -- until a determined Italian engineer gave the art world hope that it still existed, and a physicist from the US Department of Energy's Argonne National Laboratory developed a technique that may reveal it to the world once again.

Contact: Louise Lerner
media@anl.gov
630-252-5526
DOE/Argonne National Laboratory

15-Sep-2011
Simulating turbulent combustion speeds design of power and propulsion devices
A team led by mechanical engineers Joseph Oefelein and Jacqueline Chen of Sandia National Laboratories simulates turbulent combustion at different scales. Chen and Oefelein were allocated 113 million hours on Oak Ridge Leadership Computing Facility's Jaguar supercomputer in 2008, 2009 and 2010 to simulate autoignition and injection processes with alternative fuels. For 2011 they received 60 million processor hours for high-fidelity simulations of combustion in advanced engines.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

25-Aug-2011
Microscopic imaging provides new insights
Being able to view nanoparticles and their spatial distribution in 3-D provides a greater depth of information for clearer scientific understanding than could be obtained from a 2-D image.

Contact: Mary Beckman
mary.beckman@pnnl.gov
509-375-3688
DOE/Environmental Molecular Sciences Laboratory

19-Aug-2011
Supercomputers and airplanes help model hurricane structure and intensity
Information from major hurricanes such as Katrina is being put to good use by scientists striving to understand how hurricanes intensify. A research team led by Jon Reisner of Los Alamos National Laboratory is employing the Oak Ridge Leadership Computing Facility's Jaguar supercomputer to use data from lightning detectors and even wind instruments mounted on planes flown into the eye of a hurricane to improve atmospheric models. These simulations may lead to more accurate prediction of hurricane intensities.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

12-Aug-2011
A catalyst for high-impact science
A multi-institutional team of scientists is using EMSL's new Recovery Act-funded capabilities to achieve new insights into catalytic reactions on the surfaces of advanced metal oxide-based materials. The work is part of an inaugural EMSL Research Campaign that brings together world-leading capabilities and expertise in support of more efficient, less costly catalysts -- a need with cross-cutting energy and industrial applications.

Contact: Mary Beckman
mary.beckman@pnnl.gov
509-375-3688
DOE/Pacific Northwest National Laboratory

8-Aug-2011
Breakthrough fusion simulations shed light on plasma confinement
A research team led by William Tang of the Department of Energy's Princeton Plasma Physics Laboratory is developing a clearer picture of plasma confinement properties in an experimental device that will pave the way to future commercial fusion power plants. Over the past three years using resources of the Argonne Leadership Computing Facility and Oak Ridge Leadership Computing Facility, Tang's team has made continual improvements to tools essential for computationally solving fusion problems.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

5-Aug-2011
Special report highlights research at America's leadership computing facilities
A special report highlights the accomplishments of researchers running large, complex, and often unprecedented simulations on Department of Energy Office of Science supercomputers.

Contact: Dawn Levy
levyd@ornl.gov
865-576-6448
DOE/Oak Ridge National Laboratory

25-Jul-2011
Transparent batteries: Seeing straight through to the future?
SLAC and Stanford researchers have invented a transparent lithium-ion battery that is also highly flexible. It is comparable in cost to regular batteries on the market today, with great potential for applications in consumer electronics.

Contact: Melinda Lee
melinda.lee@slac.stanford.edu
650-926-8547
DOE/SLAC National Accelerator Laboratory

Showing stories 76-100 out of 529 stories.
<< < 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 > >>

 

 

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