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Ode to Sunny Days by Joseph Chege  

Ode to Sunny Days by Joseph Chege

Memories of Nairobi Sunny days

Joseph Chege: Photos

 
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in another time by momozart  

in another time by momozart

momozart: Photos

 
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Freefall by Gina Vasquez  

Freefall by Gina Vasquez

359/365 Goodnight, my dear flickrers ♥ (Inspired a bit by some Rococo paintings) facebook page | tumblr | ask.fm | blog | instagram

Gina Vasquez: Photos

 
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Nano flower  

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A "Nano Flower," a 3-D nanostructure grown by controlled nucleation of silicon carbide nanowires on gallium catalyst particles. As the growth proceeds, individual nanowires "knit" together to form 3-D structures. This photomicrograph was taken by Ghim Wei Ho, a Ph.D. student studying nanotechnology at the University of Cambridge. Ho--who works with professor Mark Welland, head of Cambridge's Nanoscale Science Lab--makes new types of materials based on nanotechnology (this "Nano Flower" is an example of new material). Nanometer-scale wires (about one thousandth the diameter of a human hair) of a silicon-carbon material (silicon carbide) are grown from tiny droplets of a liquid metal (gallium) on a silicon surface, like the chips inside our home computers. The wires grow as a gas containing methane flows over the surface. The gas reacts at the surface of the droplets and condenses to form the wires. By changing the temperature and pressure of the growth process the wires can be controllably fused together in a natural process to form a range of new structures, including these flower-like materials. Researchers are investigating possible applications for the structures like water repellant coatings and as a base for a new type of solar cell. This image was taken with a scanning electron microscope. Image color was modified using Adobe Photoshop.

Image credit: ©Ghim Wei Ho and Prof. Mark Welland, Nanostructure Center, University of Cambridge

 
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Making a solar energy conversion breakthrough with help from a ferroelectrics pioneer  

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Designers of solar cells may soon be setting their sights higher as a discovery by a team of researchers has revealed a class of materials that could be better at converting sunlight into energy than those currently being used in solar arrays. Their research shows how a material can be used to extract power from a small portion of the sunlight spectrum with a conversion efficiency that is above its theoretical maximum -- a value called the Shockley-Queisser limit. This finding could lead to more power-efficient solar cells.

Image credit: Drexel University/Ella Marushcenko

 
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Tabby's Star is dimming at inexplicable speed - 2% in six months  

Boffins clueless about cause, but the 'alien megastructure' theory remains dodgy

We might have thought that the long-term dimming of “alien megastructure” star, Tabby's Star, had been put to rest as a calibration error, but now, boffins reckon its mysterious dimming can be seen in Kepler data.…

 
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r0B0t: IBM Watson's AI makes life-saving diagnosis for medical mystery leukemia patient who baffled doctors - International Business Times UK  

International Business Times UK

IBM Watson's AI makes life-saving diagnosis for medical mystery leukemia patient who baffled doctors International Business Times UK Embed Feed Are computers coming for you job? IBM's Watson correctly diagnosed a patient after doctors failed but will unlikely replace doctors like this crime-fighting robot intended to replace security guards. IBTimes US. Elementary? Robot 'Dr Watson' diagnosed rare leukemia after medics fail to find itRT all 14 news articles »

 
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