Thursday 2 October 2014

Researchers’ acid-free approach leads to strong conductive carbon threads

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The very idea of fibers made of carbon nanotubes is neat, but Rice University scientists are making them

The post Researchers’ acid-free approach leads to strong conductive carbon threads has been published on Technology Org.

 
#materials 
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TEST PRINT

Here's a great poster featuring a beautiful image from deep space


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teacher,professor,astronomy,sociology,psychology,economics,physics,biology,history,english,archaeology,geology,ornithology,paleontology,anthropology,accounting,marketing,computer,science,french,literature,management,exam,test,instructor,law,medicine,school,med,drama,engineerin,political,art

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Water seen on Neptune-sized planet

Science Focus

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A cloud-free atmosphere reveals signs of water vapour on HAT-P-11b, the smallest planet beyond our Solar System ever to yield such an insight. 
#science 
 » see original post http://www.bbc.co.uk/news/science-environment-29343987#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa
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Butterfly Nebula in Scorpius Constellation Stickers

Here's a great sheet of stickers featuring a beautiful image from deep space


tagged with: envelope sealers, galaxies and stars, stellar winds, btbgneb, butterfly nebula, bug nebula, scorpius constellation, ngc 6302, sculptured gas clouds

Galaxies, Stars and Nebulae series NGC 6302, more popularly called the Bug Nebula or the Butterfly Nebula, lies within our Milky Way galaxy, roughly 3,800 light-years away in the constellation of Scorpius.
The central dying star cannot be seen because it's hidden within a doughnut-shaped ring of dust, which appears as a dark band pinching the nebula in the centre. The thick dust belt constricts the star's outflow, creating the classic "bipolar" or hourglass shape displayed by some planetary nebulae.
The nebula's reddish outer edges are largely due to light emitted by nitrogen, which marks the coolest gas visible in the picture. The white-coloured regions are areas where light is emitted by sulphur. These are regions where fast-moving gas overtakes and collides with slow-moving gas that left the star at an earlier time, producing shock waves in the gas (the bright white edges on the sides facing the central star).

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image code: btbgneb

image credit: NGC 6302 was imaged on 27 July 2009 with Hubble's Wide Field Camera 3 in ultraviolet and visible light. Filters that isolate emissions from oxygen, helium, hydrogen, nitrogen and sulphur were used to create this composite image.

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The Bubble Nebula

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Blown by the wind from a massive star, this interstellar apparition has a surprisingly familiar shape. Cataloged as NGC 7635, it is also known simply as The Bubble Nebula. Although it looks delicate, the 10 light-year diameter bubble offers evidence of violent processes at work. Below and left of the Bubble's center is a hot, O star, several hundred thousand times more luminous and around 45 times more massive than the Sun. A fierce stellar wind and intense radiation from that star has blasted out the structure of glowing gas against denser material in a surrounding molecular cloud. The intriguing Bubble Nebula and associated cloud complex lie a mere 11,000 light-years away toward the boastful constellation Cassiopeia. This tantalizing view of the cosmic bubble is composed from narrowband image data, recording emission from the region's ionized hydrogen and oxygen atoms. To create the three color image, hydrogen and oxygen emission were used for red and blue and combined to create the green channel.

Zazzle Space Gifts for young and old

Hubble Interacting Galaxy NGC 6670 Cases For iPad

Here's a great iPad case from Zazzle featuring a Hubble-related design. Maybe you'd like to see your name on it? Click to personalize and see what it's like!


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How salt causes buildings to crumble

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Salt crystals are often responsible when buildings start to show signs of ageing. Researchers from the Institute for

The post How salt causes buildings to crumble has been published on Technology Org.

 
#materials 
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Astronomy 101: posters

Here's a great poster featuring a beautiful image from deep space


tagged with: chart, funny, space, astronomy, meteor, planet, stars, comet, sky, identification, diagram, charts, diagrams, humor, flowchart, light, sun, moon, satellite, ufo

Based on original content from The League of Lost Causes webcomic.

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Platinum meets its match in quantum dots from coal: New catalyst for fuel cells outperforms platinum

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Scientists combined graphene quantum dots drawn from common coal with graphene oxide, nitrogen and boron into a catalyst for fuel cells that outperforms platinum. Graphene quantum dots grab onto graphene platelets like barnacles attach themselves to the hull of a boat. But these dots enhance the properties of the mothership, making them better than platinum catalysts for certain reactions within fuel cells.

via Science Daily

Monogram Cassiopeia, Milky Ways Youngest Supernova Sticker

Here's a great sheet of stickers featuring a beautiful image from deep space


tagged with: cassasn, star galaxies, outer space picture, supernova explosion, supernovae remnant, milky way youngest supernova, neutron star, deep space astronomy, cassiopeia, monogram initials, cosmic ray

Galaxies, Stars and Nebulae series This extraordinarily deep Chandra image shows Cassiopeia A (Cas A, for short), the youngest supernova remnant in the Milky Way. New analysis shows that this supernova remnant acts like a relativistic pinball machine by accelerating electrons to enormous energies. The blue, wispy arcs in the image show where the acceleration is taking place in an expanding shock wave generated by the explosion. The red and green regions show material from the destroyed star that has been heated to millions of degrees by the explosion.
Astronomers have used this data to make a map, for the first time, of the acceleration of electrons in a supernova remnant. Their analysis shows that the electrons are being accelerated to almost the maximum theoretical limit in some parts of Cas A. Protons and ions, which make up the bulk of cosmic rays, are expected to be accelerated in a similar way to the electrons. Therefore, this discovery provides strong evidence that supernova remnants are key sites for energizing cosmic rays.
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Image credit: NASA/CXC/MIT/UMass Amherst/M.D. Stage et al.

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Swirling cloud at Titan's pole is cold and toxic

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Scientists analyzing data from NASA's Cassini mission have discovered that a giant, toxic cloud is hovering over the south pole of Saturn's largest moon, Titan, after the atmosphere there cooled dramatically. The scientists found that this giant polar vortex contains frozen particles of the toxic compound hydrogen cyanide, or HCN.

via Science Daily

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Solving the mystery of the 'Man in the Moon': Volcanic plume, not an asteroid, likely created the moon's largest basin

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New data obtained by NASA's GRAIL mission reveals that the Procellarum region on the near side of the moon -- a giant basin often referred to as the "man in the moon" -- likely arose not from a massive asteroid strike, but from a large plume of magma deep within the moon's interior.

via Science Daily

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Astronomy: Wild ducks take flight in open cluster

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The Wide Field Imager on the MPG/ESO 2.2-meter telescope at ESO's La Silla Observatory in Chile has taken this beautiful image, dappled with blue stars, of one of the most star-rich open clusters currently known -- Messier 11, also known as NGC 6705 or the Wild Duck Cluster.

via Science Daily

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Dying Star Room Decals

Here's a great wall decal featuring a beautiful image from deep space


tagged with: space, nasa, science, nebula, star, dying, hubble, cosmic, astronomy, space exploration

This intriguing image of the intriguing ladder-like structures surrounding a dying star reveals startling new details of one of the most unusual nebulae known in our Milky Way. Cataloged as HD 44179, this nebula is more commonly called the "Red Rectangle" because of its unique shape and color as seen with ground-based telescopes. Hubble's sharp pictures show that the Red Rectangle is not really rectangular, but has an overall X-shaped structure, which arises from outflows of gas and dust from the star in the center. The star in the center of the Red Rectangle is one that began its life as a star similar to our sun. It is now nearing the end of its lifetime, and is in the process of ejecting its outer layers to produce the visible nebula. The shedding of the outer layers began about 14,000 years ago.
Image credit: NASA, ESA, Hans Van Winckel (Catholic University of Leuven, Belgium), and Martin Cohen (University of California, Berkeley)

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Himiko (Subaru, Hubble, and Spitzer Close-up View) iPad Cover

Here's a great iPad case from Zazzle featuring a Hubble-related design. Maybe you'd like to see your name on it? Click to personalize and see what it's like!


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