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Radiation

Xenex's robots us UV radiation to kill Ebola viruses

Dealing with highly infectious diseases like Ebola is often like a logic problem. Disinfecting rooms is hard enough, but what about protective suits? True, they greatly reduce the chances of infection, but getting them off can bring the risk straight back again if the suit isn't decontaminated first. Xenex has created protocols that conform to those of the US Centers for Disease Control and Prevention (CDC) for its a line of robots that use UV lamps that to decontaminate hospital rooms and protective clothing exposed to the Ebola virus.  Read More

The direction of magnetic north suddenly reversed about 786,000 years ago, with new resear...

A new study by a team of scientists from Italy, France, Columbia University and the University of California, Berkeley, demonstrates that the Earth's magnetic field could change polarity in less than 100 years. The last magnetic reversal occurred some 786,000 years ago and was previously thought to have taken several thousand years but, if the researchers are right, the real time it may take for the flip to occur could actually be closer to the span of a human life.  Read More

The handheld detector will tell its users what type of radionuclide is creating the radiat...

Ever since the Fukushima nuclear reactor disaster, there has understandably been an upsurge in the sale of consumer radiation-detecting devices. Most of these gadgets are variations on the Geiger counter, in that they alert the user to the presence and level of radiation, but not the type of radiation – which is very important to know. Researchers at Oregon State University are hoping to address that situation by developing a handheld device that will additionally tell its users what type of radionuclide is creating the radiation, and whether it poses a risk.  Read More

Artist's impression of Orion's service module fairing separation in low-Earth orbit (image...

With the launch date of the Orion next-generation spacecraft approaching fast, NASA scientists have set out what they hope to learn from its maiden launch. The test flight, dubbed EFT-1 is the first of three proving missions set to trial many of the in-flight systems essential to the success of any manned mission to Mars, or beyond.  Read More

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

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