Wednesday 8 April 2015

Model captures new dynamics of corrosion damage

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University of Nebraska-Lincoln engineers have become the first to develop a model that literally looks beyond the surface

The post Model captures new dynamics of corrosion damage has been published on Technology Org.

 
#materials 
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Violent formation of the moon: New view

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Scientists have reconciled the accepted model of the moon's formation with the unexpectedly similar isotopic fingerprints of both bodies. The results suggest that the impact that formed the moon was so violent, the resulting debris cloud mixed thoroughly before settling down and forming the moon.

via Science Daily

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Complex organic molecules discovered in infant star system: Hints that building blocks of chemistry of life are universal

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For the first time, astronomers have detected the presence of complex organic molecules, the building blocks of life, in a protoplanetary disc surrounding a young star. The discovery reaffirms that the conditions that spawned the Earth and Sun are not unique in the Universe.

via Science Daily

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Ice on Mars: Mars has belts of glaciers consisting of frozen water

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Mars has distinct polar ice caps, but Mars also has belts of glaciers at its central latitudes in both the southern and northern hemispheres. A thick layer of dust covers the glaciers, so they appear as surface of the ground, but radar measurements show that underneath the dust there are glaciers composed of frozen water. New studies have now calculated the size of the glaciers and thus the amount of water in the glaciers.

via Science Daily

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Suppressing old memories key to learning new ones

Science Focus

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There has long been convincing evidence that recalling a memory can cause changes in that memory, potentially weakening it, strengthening it, or otherwise altering it. A new study, published in Nature Neuroscience by researchers from the University of Birmingham, the MRC Cognition and Brain Sciences Unit, and the Behavioral and Clinical Neurosciences Institute, presents a convincing argument that the weakening of old memories may be an adaptive function, one that helps the brain integrate new memories with existing ones.

The researchers were able to watch subjects’ brain activity as memories were recalled using a functional Magnetic Resonance Imaging (fMRI) machine. An fMRI machine allows scientists to see changes in brain activity by producing images that show where oxygen-rich blood is flowing within the brain.

Subjects were shown 144 pairs of pictures/words while in the fMRI machine, and their brain activity was observed. Then, the subjects entered a learning phase, in which they were trained on 72 picture-word pairs, a subset of the initial 144. They were asked to construct a highly detailed association between the pictures and the words, using intricate mental imagery. They were then asked to learn a second set of associations for each word; these served as competition for the first set.

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#science 
 » see original post http://feeds.arstechnica.com/~r/arstechnica/science/~3/I3JNAWVqRns/
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Strength in Numbers

Science Focus

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Researchers develop the first-ever quantum device that detects and corrects its own errors When scientists develop a full

The post Strength in Numbers has been published on Technology Org.

 
#physics 
 » see original post http://feedproxy.google.com/~r/TechnologyOrgPhysicsNews/~3/SPzoLPDviFU/
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Star Cluster Pismis 24, core of NGC 6357 Sticker

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


tagged with: stars, galaxies, astronomy, envelope sealers, star cluster, pismis 24, sculpting ultaviolet ionisation, super massive stars, sclustpsms, nebula ngc 6357

Galaxies, Stars and Nebulae series The star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 that extends one degree on the sky in the direction of the Scorpius constellation. Part of the nebula is ionised by the youngest (bluest) heavy stars in Pismis 24. The intense ultraviolet radiation from the blazing stars heats the gas surrounding the cluster and creates a bubble in NGC 6357. The presence of these surrounding gas clouds makes probing into the region even harder. One of the top candidates for the title of "Milky Way stellar heavyweight champion" was, until now, Pismis 24-1, a bright young star that lies in the core of the small open star cluster Pismis 24 (the bright stars in the Hubble image) about 8,000 light-years away from Earth. Pismis 24-1 was thought to have an incredibly large mass of 200 to 300 solar masses. New NASA/ESA Hubble measurements of the star, have, however, resolved Pismis 24-1 into two separate stars, and, in doing so, have "halved" its mass to around 100 solar masses.

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image code: sclustpsms

Image credit: NASA/ESA Hubble

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Scientists program the lifetime of self-assembled nanostructures

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Materials that self-assemble and self-destruct once their work is done are highly advantageous for a number of applications – as components in temporary data storage systems or for medical devices. For example, such materials could seal blood vessels during surgery and re-open them subsequently. Dr. Andreas Walther, research group leader at DWI – Leibniz Institute for Interactive Materials in Aachen, developed an aqueous system that uses a single starting point to induce self-assembly formation, whose stability is pre-programmed with a lifetime before disassembly occurs without any additional external signal – hence presenting an artificial self-regulation mechanism in closed conditions. Their results are published as this week's cover article in Nano Letters.



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Origin of Annama meteorite determined

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Astronomers have determined the orbit of Annama, a newly characterized meteorite from a fireball which occurred on April 19, 2014, at the Kola Peninsula. Researchers highlight the importance of this finding because this is only the 23rd meteorite with a known orbit. It is important to know the orbit in order to determine the level of risk to Earth.

via Science Daily

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Full Moon in Earth's Shadow

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Last week the Full Moon was completely immersed in Earth's dark umbral shadow, just briefly though. The total phase of the April 4, 2015 lunar eclipse lasted less than 5 minutes, the shortest total lunar eclipse of the century. In fact, sliding just within the Earth's umbral shadow's northern edge, the lunar north stayed relatively bright, while a beautiful range of blue and red hues emerged across the rest of the Moon's Earth-facing hemisphere. The reddened light within the shadow that reaches the lunar surface is filtered through the lower atmosphere. Seen from a lunar perspective it comes from all the sunsets and sunrises around the edges of the silhouetted Earth. Close to the shadow's edge, the bluer light is still filtered through Earth's atmosphere, but originates as rays of sunlight pass through layers high in the upper stratosphere. That light is colored by ozone that absorbs red light and transmits bluer hues. In this sharp telescopic view of totality from Auckland, New Zealand, planet Earth, the Moon's north pole has been rotated to the top of the frame.
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Pandora's Cluster Detail iPad Air 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!


tagged with: abell 2744, pandora's cluster, blue, pink, purple, magenta, galaxy, galaxies, pretty, colorful, beautiful, awesome, abell2744

A colorful space image galaxy cluster Abell 2744, otherwise known as Pandora's Cluster. Source of image is NASA/Hubble programs.

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Funding secured to develop next generation membranes

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Researchers from our University have been awarded a £1m Engineering and Physical Sciences Research Council (EPSRC) grant to

The post Funding secured to develop next generation membranes has been published on Technology Org.

 
#materials 
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Pale Blue Dot Clean Posters

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


tagged with: pale, blue, dot, space, astronomy, earth

The pixelation from the hubble scope are cleaned up in this one to look a little more wall art friendly.

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via Zazzle Astronomy market place

Star Cluster Pismis 24, core of NGC 6357 Sticker

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


tagged with: galaxies, star cluster, pismis 24, sculpting ultaviolet ionisation, super massive stars, sclustpsms, nebula ngc 6357, peel off, outer space exploration, astronomy pictures

Galaxies, Stars and Nebulae series The star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 that extends one degree on the sky in the direction of the Scorpius constellation. Part of the nebula is ionised by the youngest (bluest) heavy stars in Pismis 24. The intense ultraviolet radiation from the blazing stars heats the gas surrounding the cluster and creates a bubble in NGC 6357. The presence of these surrounding gas clouds makes probing into the region even harder. One of the top candidates for the title of "Milky Way stellar heavyweight champion" was, until now, Pismis 24-1, a bright young star that lies in the core of the small open star cluster Pismis 24 (the bright stars in the Hubble image) about 8,000 light-years away from Earth. Pismis 24-1 was thought to have an incredibly large mass of 200 to 300 solar masses. New NASA/ESA Hubble measurements of the star, have, however, resolved Pismis 24-1 into two separate stars, and, in doing so, have "halved" its mass to around 100 solar masses.

more items with this image
more items in the Galaxies, Stars and Nebulae series

image code: sclustpsms

Image credit: NASA/ESA Hubble

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Click to customize.
via Zazzle Astronomy market place

National Briefing | West: Hawaii: Work on Giant Telescope Is Paused

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Gov. David Ige of Hawaii said the group building the telescope, one of the world’s largest, had agreed to pause construction to allow interested parties to have more discussions about the project.















via New York Times

Pink Blue Stars Cross White iPad Air Cases

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!


tagged with: pink, blue, galaxy cluster, space, image, pretty, colorful, cross, shape

Simple cross shape colored with a NASA Hubble space image of the colorful blue and pink galaxy cluster Abell 2744. You can change the background color.

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The Zazzle Promise: We promise 100% satisfaction. If you don't absolutely love it, we'll take it back!