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Radiation

Dr. Steve Jiang and UT Southwestern Medical Center are pioneering the use of general-purpo...

Medical physicists at the University of Texas Southwestern Medical Center are latching on to advances in the computational speed of graphics processing units (GPUs) to drastically reduce the time required to calculate radiation therapy plans. The approach also increases the accuracy of calculations, allowing for faster, more precise, and more adaptable treatment of cancer patients.  Read More

'This technology enables people to 'see' radiation,' says Zhong He, professor of nuclear e...

Turn on any old science fiction film and odds are that you'll see someone listening to the ominous chirping of a Geiger counter. It's very dramatic, but not very precise and, unfortunately, nuclear scientists and engineers of today are stuck with the same problem. Now, researchers at the University of Michigan have developed a faster, cheaper way for nuclear power plants to detect and map dangerous hot spots and leaky fuel rods using a camera that maps radiation in real time.  Read More

US Atomic Energy Commission 14 kT Bunker Charlie test - October 30, 1951 (Photo: USAEC)

The best advice for surviving a nuclear bomb is to be somewhere else when it goes off. If that doesn't work out for you, though, a recent study carried out at the USDOE's Lawrence Livermore National Laboratory (LLNL) provides some simple guidance for maximizing your chances of survival.  Read More

Mimicking polar bear fur, which is able to insulate the animal's body to temperatures of 9...

Put a polar bear and a biophotonics expert together in a chilly room and what do you get? Potentially, better insulation. When looking to uncover the secrets of the impressive insulation properties of polar bear fur, researchers at the University of Namur in Belgium and the University of Hassan I in Morocco found that radiation plays a larger role than conduction in the insulation of polar animals, such as penguins and polar bears, than previously believed.  Read More

Astrophoto in redshifted Lyman-alpha light, possibly emitted by a cosmic filament of gas a...

That the Universe is largely composed of a cosmic web consisting of narrow filaments upon which galaxies and intergalactic gas and dust are concentrated has been known for more than a decade. While a great deal of evidence for this has accumulated, visual evidence has been difficult to find. Astronomers have now photographed what appears to be a segment of a cosmic filament stimulated into fluorescence by irradiation from a nearby quasar.  Read More

An Antares launch vehicle boosts the Orbital Sciences Cygnus spacecraft on it's way to the...

Orbital Sciences Corporation today successfully launched the first of eight Cygnus cargo supply missions to the International Space Station (ISS). Orbital's Antares medium-lift rocket (originally called the Taurus II) carried the Cygnus into an initial orbit of 135 x 175 miles (220 x 280 km), inclined at 51.6 degrees relative to the equator. The Cygnus is flying solo now, with full communications and deployed solar arrays, carrying roughly 2,800 lb (1,300 kg) of cargo toward a January 12 rendezvous and docking with the ISS.  Read More

New York City in the pastel shades of Nickolay Lamm's cellular network interpretations (Ph...

Nickolay Lamm is a self-identified artist and researcher, who is making a career of transforming ordinary images into extraordinary visual displays of quantitative information, to borrow from Ed Tufte. We take a look at his transformation of New York, Chicago, Hollywood, and Washington D.C. through converting cellular network transmissions into visual overlays.  Read More

View of Yellowknife Bay formation with drilling sites (Image: NASA/JPL-Caltech/MSSS)

The chances of life having once existed on Mars got a boost this week alongside good news for astronauts on any future expeditions to the Red Planet. Six papers from Curiosity team members presented to the autumn meeting of the American Geophysical Union in San Francisco revealed that they had directly dated their first Martian rock, gave details of an ancient lake where life may once of existed, and found new evidence about the radiation hazards that explorers and colonists may one day face.  Read More

The 3D-printed vertebral body next to the original unprepared and erroneously labeled plas...

Access to rare fossils is limited, potentially putting a go-slow on their study, while sharing them around increases the risk of damaging them. Researchers at Berlin's Charité Campus Mitte have combined data from computed tomography (CT) scans with 3D printing technology to make it possible to print any number of accurate 3D reproductions of fossilized bones, without any adverse effect on the originals.  Read More

50 kW CO2 laser in action (Photo: Laser Effects Test Facility - US Government)

A group of researchers at NIST working with engineers from Colorado-based Scientech has developed a new approach to measuring laser power using a mirror and a scale. This method, which measures the force on the mirror driven by the radiation pressure of the laser light, presents a more rugged and more portable solution than current meters.  Read More

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