Science

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All Systems Go for Highest Altitude Supercomputer

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One of the most powerful supercomputers in the world has now been fully installed and tested at its remote, high altitude site in the Andes of northern Chile. This marks one of the major remaining milestones toward completion of the Atacama Large Millimeter/submillimeter Array (ALMA), the most elaborate ground-based telescope in history. The special-purpose ALMA correlator has over 134 million processors and performs up to 17 quadrillion operations per second, a speed comparable to the fastest general-purpose supercomputer in operation on Friday.

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Long-wavelength laser will be able to take medicine fingerprints

A laser capable of working in the terahertz range - that of long-wavelength light from the far infrared to 1 millimetre - enables the ‘fingerprint' of, say, a drug to be examined better than can be done using chemical analysis. To achieve this, PhD student Thomas Denis of the University of Twente's MESA+ Institute for Nanotechnology has combined the best of two worlds, a free electron source and photonic crystals. The result: greater flexibility and a compact laser.

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Cross-section of a prototype pFEL, with the free electron source on the right and the photonic crystal inside the red part.

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A nanoscale window to the biological world: In situ molecular microscopy provides a gateway to imaging dynamic systems in structural biology

If the key to winning battles is knowing both your enemy and yourself, then scientists are now well on their way toward becoming the Sun Tzus of medicine by taking a giant step toward a priceless advantage - the ability to see the soldiers in action on the battlefield.

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A novel microfluidics platform allowed viewing of structural details of rotavirus double-layered particles; the 3-D graphic of the virus, in purple, was reconstructed from data gathered by the new technique.

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Cassini Instrument Learns New Tricks

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This false-color composite image, constructed from data obtained by NASA's Cassini spacecraft, shows Saturn's rings and southern hemisphere. The composite image was made from 65 individual observations by Cassini's visual and infrared mapping spectrometer in the near-infrared portion of the light spectrum on Nov. 1, 2008. The observations were each six minutes long.

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One Million Downloads for JPL Space Images App

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NASA/JPL's popular mobile app continues to amass many exciting images including the Mars Curiosity Rover, dying stars, moons of Saturn and giant asteroids.

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2 problems in chemical catalysis solved: University of Jyvaskyla Department of Chemistry and NanoScience Center

The research group of Professor Petri Pihko at the Department of Chemistry and the NanoScience Center of the University of Jyväskylä has solved two acute problems in chemical catalysis. The research has been funded by the Academy of Finland.

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This image shows a novel bifunctional catalyst for the Mannich reaction.

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May the force be with the atomic probe: New models suggest devising means of probing a surface at a sub-micrometric level as this will help us understand how electrons’ diffusion affects long-range attractive forces

Theoretical physicist Elad Eizner from Ben Gurion University, Israel, and colleagues created models to study the attractive forces affecting atoms located at a wide range of distances from a surface, in the hundreds of nanometers range. Their results, about to be published in EPJ D, show that these forces depend on electron diffusion, regardless of whether the surface is conducting or not. Ultimately, these findings could contribute to designing minimally invasive surface probes.

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CryoSat hits land

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Shot Away from its Companion, Giant Star Makes Waves

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The giant star Zeta Ophiuchi is having a "shocking" effect on the surrounding dust clouds in this infrared image from NASA's Spitzer Space Telescope. Stellar winds flowing out from this fast-moving star are making ripples in the dust as it approaches, creating a bow shock seen as glowing gossamer threads, which, for this star, are only seen in infrared light.

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Stars Reveal the Secrets of Looking Young

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