27-12-2007   -   Physics

Wed, 26 Dec 2007 The dashing start of electrons in a crystal does not remain without consequences for their further fate. Researchers examined the ultrafast movement of electrons in a gallium arsenide crystal exposed for a short time to a very high electrical field. This conceptually new experiment shows for the first time a collective, oscillatory motion of the electrons with ultrahigh frequency, which arises additionally to the well-known drift motion of these particles. This newly discovered effect could play an important role in connection with the miniaturization of electronic devices. more

  26-12-2007   -   Biology

Thu, 20 Dec 2007 Using genetic engineering techniques, researchers have proven a long-standing theory of how many plants ship sugars from their leaves to flowers, roots, fruits and other parts of their structure. more

  17-12-2007   -   Biology

Sun, 16 Dec 2007 Scientists have identified a molecule that may govern how the circadian clock in plants responds to environmental changes. The researchers have discovered that a signaling molecule, known to be important for environmental stress signaling in plants, also regulates their circadian clock. They believe that the molecule may therefore incorporate information about environmental changes into the biological clock that regulates the physiology of plants. The research dramatically changes our current understanding of the circadian clock and may have important implications for the agricultural community. more

  17-12-2007   -   ICT

Fri, 14 Dec 2007 As a step towards designing tomorrow's super-fast optical communications networks, scientists have demonstrated a way to transfer encoded information from a laser beam to sound waves and then back to light waves again. more

  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

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