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

 

Features Archive

Showing stories 1-25 out of 143 stories.
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17-Sep-2014
OLCF researcher to work with clean combustion center at Saudi University
High-fidelity simulations to help determine how engine knock develops and assist in predicting how the transition from smooth combustion to knocking occurs.

Contact: Jeff Gary
jeffdgary@ornl.gov
865-574-8066
DOE/Oak Ridge National Laboratory

17-Sep-2014
Predicting performance
Lignin, a low-cost byproduct of the pulp, paper and biofuels industries, can be transformed into a cheaper version of highly engineered graphite through a simple and industrially scalable manufacturing process.

Contact: Morgan McCorkle
mccorkleml@ornl.gov
865-574-7308
DOE/Oak Ridge National Laboratory

12-Sep-2014
Best of 2 worlds
The Bredesen Center is the beginning of a new way of doing graduate education.

Contact: Ron Walli
wallira@ornl.gov
865-576-0226
DOE/Oak Ridge National Laboratory

12-Sep-2014
Imaging fuel injectors with neutrons
Researchers are using neutrons to study the formation of these damage-causing bubbles in fuel injectors.

Contact: Katie Bethea
betheakl@ornl.gov
865-576-8039
DOE/Oak Ridge National Laboratory

11-Sep-2014
High flux isotope reactor named nuclear historic landmark
The High Flux Isotope Reactor, or HFIR, has been designated a Nuclear Historic Landmark by the American Nuclear Society.

Contact: Bill Cabage
cabagewh@ornl.gov
865-574-4399
DOE/Oak Ridge National Laboratory

28-Aug-2014
Materials scientists play atomic 'Jenga' and make a surprising discovery
Researchers got a surprise when they built a highly ordered lattice by layering thin films containing lanthanum, strontium, oxygen and iron. Although each layer had an intrinsically nonpolar (symmetric) distribution of electrical charges, the lattice had an asymmetric distribution of charges. The charge asymmetry creates an extra 'switch' that brings functionalities to materials when 'flipped' by external stimuli. The material defects induced polar behavior and can provide a new mechanism for manipulating electricity and magnetism in energy and information technologies.

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

27-Aug-2014
Neutron science workshops seek to define field's grand challenges
Scientists are hoping to push the limits of neutron science and associated analytical techniques in order to address challenges.

Contact: Katie Bethea
betheakl@ornl.gov
865-576-8039
DOE/Oak Ridge National Laboratory

27-Aug-2014
Scientists learn to control reactions with the shape of a rare-earth catalyst
Scientists have discovered they can control chemical reactions in a new way by creating different shapes of cerium oxide, a rare-earth-based catalyst.

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

26-Aug-2014
Oak Ridge supercomputer turns the tide for consumer products research
Consumer-products giant Procter & Gamble has turned to Oak Ridge National Laboratory and America's fastest supercomputer to simulate microscopic processes that can threaten product performance and stability.

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

22-Aug-2014
Catalytic gold nanoclusters promise rich chemical yields
With scientists from Carnegie Mellon University, researchers at the Department of Energy's Oak Ridge National Laboratory have found a catalyst containing exactly 25 gold atoms that catalyzes the conversion of various molecules, including the transformation of poisonous carbon monoxide into harmless carbon dioxide, a reaction that may find application in devices near gas flues or wood-burning stoves.

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

25-Apr-2014
'Sweet spot' for salty water
Computational modeling has given materials researchers new insight into the properties of a membrane that purifies saltwater into potable water. The resulting technology could help speed up inefficient desalination processes in use today.

Contact: Morgan McCorkle
mccorkleml@ornl.gov
865-574-7308
DOE/Oak Ridge National Laboratory

11-Apr-2014
Simulation solves mystery of how liquid-crystal thin films disintegrate
Approximately four decades ago, theoreticians believed that only one of two mechanisms could explain rupture of liquid-crystal thin films. They also believed that these two mechanisms could not coexist. But 10 years ago experiments showed that these two mechanisms in many cases do coexist, according to Trung Nguyen of Oak Ridge National Laboratory, who ran unprecedented large-scale molecular dynamics simulations on Titan, America's fastest supercomputer, to model the beginnings of ruptures in thin films.

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

11-Apr-2014
Oak Ridge National Laboratory researchers contribute to prestigious climate report
Thomas Wilbanks and Benjamin Preston, both of the Climate Change Science Institute at Oak Ridge National Laboratory, are among the 309 coordinating lead authors of the Intergovernmental Panel on Climate Change's Working Group II report. The report, which was released in Japan on March 31, found that climate change isn't just a problem for future generations, but also impacts humans in the present day.

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

29-Jan-2014
Letting in the light
Oak Ridge National Laboratory is developing a low-cost, transparent, anti-soiling coating for solar reflectors to optimize energy efficiency while lowering operating and maintenance costs and avoiding negative environmental impacts.

Contact: Bill Cabage
cabagewh@ornl.gov
865-574-4399
DOE/Oak Ridge National Laboratory

16-Dec-2013
Titan simulates earthquake physics necessary for safer building design
Researchers with the Southern California Earthquake Center are using ORNL's Titan supercomputer to prepare the state for its next big earthquake.

Contact: Jeff Gary
garyjd@ornl.gov
865-574-8066
DOE/Oak Ridge National Laboratory

16-Dec-2013
Simulation shuffles protons and electrons
Plants solved the solar energy challenge billions of years ago, with photosynthesis.

Contact: Jeff Gary
garyjd@ornl.gov
865-574-8066
DOE/Oak Ridge National Laboratory

2-Jul-2013
Materials for measuring the universe

Physicists have their own version of the "butterfly effect" that hinges on precise measurements of one of the building blocks of the universe.


Contact: Media Relations
865-574-4160
DOE/Oak Ridge National Laboratory

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

24-May-2012
Supernovas explode in 3-D detail at Oak Ridge National Laboratory
Understanding a Type Ia supernova -- an exploding white dwarf star -- requires supercomputers. A team of astrophysicists and computational scientists is using the power of Oak Ridge National Laboratory's Jaguar to virtually blow up these white dwarfs. In the process the researchers are revealing the secrets of the biggest thermonuclear explosions in the universe and finding the answers needed to measure the size of the universe.

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

4-Apr-2012
Carbon dioxide caused global warming at ice age's end, pioneering simulation shows
Climate science has an equivalent to the "what came first -- the chicken or the egg?" question: what came first, greenhouse gases or global warming? A multi-institutional team led by researchers at Harvard, Oregon State University, and the University of Wisconsin used a global dataset of paleoclimate records and the Jaguar supercomputer at Oak Ridge National Laboratory to find the answer. The results, published in the April 5 issue of Nature, analyze 15,000 years of climate history.

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

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

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

Showing stories 1-25 out of 143 stories.
1 | 2 | 3 | 4 | 5 > >>

 

 

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