15-03-2009   -   Physics

Sun, 15 Mar 2009 An international team of scientists have discovered a transparent form of the element sodium (Na). The team, led by Artem Oganov, Professor of Theoretical Crystallography at Stony Brook University, and Yanming Ma, the lead author and professor of physics at Jilin University in China, was able to demonstrate that sodium defies normal physical expectations by going transparent under pressure. more?

  15-03-2009   -   Nano Tech

Sat , 14 Mar 2009, Chemists at the University of Connecticut have found a way to greatly increase the luminescence efficiency of single-walled carbon nanotubes, a discovery that could have significant applications in medical imaging and other areas. more

  05-03-2009   -   Nuclear

Thu, 5 Mar 2009 In 2006, Americans were exposed to more than seven times as much ionizing radiation from medical procedures as was the case in the early 1980s, according to a new report on population exposure released March 3rd by the National Council on Radiation Protection and Measurements (NCRP) at its annual meeting in Bethesda, Maryland. In 2006, medical exposure constituted nearly half of the total radiation exposure of the U.S. population from all sources. more

  05-03-2009   -   Energy

Wed, 4 Mar 2009 A new study on the installed costs of solar photovoltaic (PV) power systems in the U.S. shows that the average cost of these systems declined significantly from 1998 to 2007, but remained relatively flat during the last two years of this period. more

  26-01-2009   -   Energy

Mon, 26 Jan 2009 Recent advances in electrochemical capacitors for energy storage open new opportunities for water desalination devices with high energy efficiency. more

  06-01-2009   -   Physics

Tue, 6 Jan 2009 Physicists at Indiana University have developed a promising new way to identify a possible abnormality in a fundamental building block of Einstein's theory of relativity known as "Lorentz invariance." If confirmed, the abnormality would disprove the basic tenet that the laws of physics remain the same for any two objects traveling at a constant speed or rotated relative to one another.more

  15-12-2008   -   Biology

Mon, 15 Dec 2008 Biologists have known for decades that cells use tiny molecular motors to move chromosomes, mitochondria, and many other organelles within the cell, but no one has been able to understand what "steers" these engines to their destinations. Now, researchers have shed new light on how cells accomplish this feat and the results may eventually lead to new approaches to fighting pathogens and neurological diseases.more

  14-12-2008   -   Physics

Sat, 13 Dec 2008 The first generation of quantum dots were made from the toxic heavy metal cadmium and had emission wavelengths, and colors, determined by their size. "Lattice strain" created by layers of different semiconductor materials allows the color of quantum dots to be tuned independent of size. Small enough to pass through the kidneys if administered systemically, the new quantum dots are expected to be useful for cancer detection and possibly in solar energy conversion.more

  02-12-2008   -   Energy

Tue, 2 Dec 2008 Currently solar cells are difficult to handle, expensive to purchase and complicated to install. The hope is that consumers will one day be able to buy solar cells from their local hardware store and simply hang them like posters on a wall. A recent study has shown that the dream is one step closer to reality.more

  27-11-2008   -   Geology

Thu, 27 Nov 2008 Scientists have successfully completed record-setting, petascale-level simulations of the earth's inner structure, paving the way for seismologists to model seismic wave propagations at frequencies of just over one second -- the same frequencies that occur in nature. more

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