29-11-2007   -   Physics

Thu, 29 Nov 2007 Using laser light to stir an ultracold gas of atoms, researchers have demonstrated the first 'persistent' current in an ultracold atomic gas, a frictionless flow of particles. This form of superfluidity, might help bring to the surface some deep physics insights, and enable super-sensitive rotation sensors that could someday make navigation more precise. more

  26-11-2007   -   Mathematics

Mon, 26 Nov 2007 Scientists recently "put the nail in the coffin" in the debate about using fractal analysis in authenticating art as they completed a second study related to fractal analysis and Jackson Pollock's drip paintings. In the process of analyzing art, the researchers discovered some new fractal mathematics and developed a process for separating the colored layers of paint in art works. Fractal analysis involves placing a grid over an image to search for replications of geometric patterns. more

  26-11-2007   -   Nuclear

Mon, 26 Nov 2007 In an effort to find an answer to the problem of identifying smuggled special nuclear material, researchers say a neutron scatter camera they are developing may be able to detect radiation from much greater distances and through more shielding than current detection instruments. more

  25-11-2007   -   Physics

Sat, 24 Nov 2007 Fifty years ago, three physicists unveiled their BCS theory of superconductivity, which explained how currents of electrons can flow perpetually if they join in pairs. Those physicists, including Leon Cooper at Brown University, won a Nobel Prize for their work. Now Brown physicists have shown something surprising: the formation of Cooper pairs can not only help electric current to flow but it can also block that current. Their research appears in Science. more

  21-11-2007   -   Energy

Wed, 21 Nov 2007 The Near Zero Emissions Coal Phase 1 study has been launched in Beijing, China. The aim is to look at the feasibility of building coal-fired power plants in China fitted with carbon dioxide capture and storage. more

  21-11-2007   -   Chemistry

Wed, 21 Nov 2007 Three-dimensional photonic crystals will revolutionize telecommunications. Smaller, faster, more efficient: Research scientists are helping to revolutionize the future world of telecommunications -- with the aid of 3-D photonic crystals. more

  20-11-2007   -   Environment

Tue, 20 Nov 2007 Scientists have developed a tool for quantitatively measuring elusive atmospheric chemicals that play a key role in the formation of photochemical smog. Better measurements will improve scientists' understanding of the mechanisms of smog formation and their ability to select and predict the effectiveness of various mitigation strategies.

  19-11-2007   -   Physics

Mon, 19 Nov 2007 Scientists are closer to developing novel devices for optics-based quantum computing and quantum information processing, as a result of a breakthrough in understanding how to make all the spins in an ensemble of quantum dots identical. more

  19-11-2007   -   Engineering

Mon, 19 Nov 2007 12:00:00 GMT A new antenna made of plasma (a gas heated to the point that the electrons are ripped free of atoms and molecules) works just like conventional metal antennas, except that it vanishes when you turn it off. That's important on the battlefield and in other applications where antennas need to be kept out of sight. In addition, unlike metal antennas, the electrical characteristics of a plasma antenna can be rapidly adjusted to counteract signal jamming attempts. more

  15-11-2007   -   Biology

Thu, 15 Nov 2007 21:00:00 GMT While fluorescence has long been used to tag biological molecules, a new technology allows researchers to use tiny fluorescent probes to rapidly detect and identify protein interactions within living cells while avoiding the biological disruption of existing methods, according to an article in Nature Chemical Biology. more

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