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Computing catches up with theory
10-30-2006 · EurekAlert!New computing tools have allowed Peter Richardson, a professor of engineering and physiology at Brown University, to test ideas about blood flow and clotting that he first proposed over 30 years ago. The collaboration with mathematics colleagues Igor Pivkin and George Karniadakis resulted in a model that integrates fluid dynamics with platelet biochemistry and could provide new insights into the treatment and prevention of strokes and heart attacks.
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- 'Ten Commandments' could improve fisheries management
02-18-2007 · EurekAlert!
Poorly managed marine fisheries are in trouble around the world, researchers say, while ecosystem-based management is a powerful idea that in theory could help ensure sustainable catches -- but too often there's a gap in translating broad concepts into specific action. To address that, one expert today modified a very old set of rules and issued "Ten Commandments" for ecosystem-based fisheries science, in a presentation at the annual meeting of the American Association for the Advancement of Science.
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- Concrete flow researchers to use Argonne supercomputer
01-23-2008 · EurekAlert!
Argonne National Laboratory has announced that a team of researchers at NIST has been awarded 750,000 central processing unit hours on the IBM Blue Gene/P supercomputer at the Argonne Leadership Computing Facility. The allocation is one of 55 awards of supercomputer time given in a peer-reviewed competition known as the Innovative and Novel Computational Impact on Theory and Experiment program.
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- New Web-based system leads to better, more timely data
10-27-2006 · EurekAlert!
After two years of work, an innovative project using web-based technologies to speed researcher access to a large body of new scientific data has demonstrated that not only access to but also the quality of the data has improved markedly. The data-entry process for the web-enabled ThermoML thermodynamics global data exchange catches and corrects data errors in roughly ten percent of journal articles entered in the system.
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- ORNL team discovers new way to spin up pulsars
01-05-2007 · Oak Ridge National Laboratory (ORNL)
A team of scientists using Oak Ridge National Laboratory supercomputers has discovered the first plausible explanation for a pulsar's spin that fits the observations made by astronomers. Anthony Mezzacappa of the Department of Energy lab's Physics Division and John Blondin of North Carolina State University explain their results in the Jan. 4 issue of the journal Nature. According to three-dimensional simulations they performed at the Leadership Computing Facility, located at ORNL, the spin of a pulsar is determined not by the spin of the original star, but by the shock wave created when the star's massive iron core collapses.
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- Single spinning nuclei in diamond offer a stable quantum computing building block
05-31-2007 · EurekAlert!
Surmounting several distinct hurdles to quantum computing, physicists at Harvard University have found that individual carbon-13 atoms in a diamond lattice can be manipulated with extraordinary precision to create stable quantum mechanical memory and a small quantum processor, also known as a quantum register, operating at room temperature. The finding brings the futuristic technology of quantum information systems into the realm of solid-state materials under ordinary conditions.
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- NRL researchers develop optical technique for controlling electron spins in quantum dot ensembles
11-15-2007 · EurekAlert!
Scientists are closer to developing novel devices for optics-based quantum computing and quantum information processing, as a result of a breakthrough in understanding how to make all the spins in an ensemble of quantum dots identical.
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- New theory explains enhanced superconductivity in nanowires
10-18-2006 · EurekAlert!
Superconducting wires are used in magnetic resonance imaging machines. Eventually, ultra-narrow superconducting wires might be used in power lines designed to carry electrical energy long distances with little loss. Now, researchers at the University of Illinois at Urbana-Champaign not only have discovered an unusual phenomenon in which ultra-narrow wires show enhanced superconductivity when exposed to strong magnetic fields, they also have developed a theory to explain it.
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- Acoustic noise contains valuable geophysical information
12-07-2006 · EurekAlert!
The proper processing of acoustic noise can provide a wealth of geophysical information. The advantage of using existing acoustic noise is that signals only need to be recorded and not produced. Researchers at TU Delft and the Colorado School of Mines have generalised the underlying theory and found that acoustic noise can be used for a much wider scale of physical applications than was previously thought possible.
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- Theory stretches the limits of composite materials
01-31-2007 · EurekAlert!
In an advance that could lead to composite materials with virtually limitless performance capabilities, a University of Wisconsin-Madison scientist has dispelled a 50-year-old theoretical notion that composite materials must be made only of "stable" individual materials to be stable overall.
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- When washed in sunlight, asteroids hit the spin cycle, Cornell researchers find
03-07-2007 · EurekAlert!
The sun is a cosmic spinmeister. Using the highly sensitive radar telescope at the Cornell University-managed Arecibo Observatory in Puerto Rico and Goldstone antenna in California, Cornell astronomers have confirmed a theory that sunlight and the asteroid's shape determine how an asteroid's rotation evolves. Their research is reported today in Science Express, the online edition of the journal Science.
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