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Physics and Astronomy
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Written by xScience.Info
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Monday, 18 September 2006 |
 Using a high-powered electromagnet, Brown University physicists Karine
Guevorkian and James Valles have created a topsy-turvy world for the
single-celled paramecium. They have managed to increase, eliminate and even
reverse the effects of gravity on the tiny protozoan, changing its swimming
behavior and indirectly measuring its swimming force.
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Experimental Methods and Techiques
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Written by xScience.Info
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Monday, 18 September 2006 |
 A radically different approach to detecting magnetic resonance has been developed by US scientists. The method is based on how polarized laser light is rotated by a liquid sample's nuclear spins. The result is a much more information rich analogue of conventional NMR spectroscopy that shows promise for improving resolution and sensitivity.
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Physics and Astronomy
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Written by xScience.Info
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Sunday, 17 September 2006 |
 Astronomers have used a pair of pulsars orbiting
each other, found with CSIRO’s Parkes telescope in 2003, to show that
Einstein’s theory of general relativity is correct to within 0.05% –
the most stringent limit to date. They
also hope to be able to use the two pulsars to determine the exact
nature of the matter that pulsars and other neutron stars are made of.
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Experimental Methods and Techiques
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Written by xScience.Info
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Sunday, 17 September 2006 |
 A microscope used to scan nanostructures can be
dramatically enhanced by using a "superlens", reports an international
team of scientists from the Max Planck Institute (MPI) for Biochemistry
and The University of Texas at Austin in this week's issue of Science. This
is the first time a superlens, a lens capable of creating images of
objects smaller than the wavelength of light, has been integrated into
a microscope and used to visualize two-dimensional objects.
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Life Sciences
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Written by xScience.Info
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Saturday, 16 September 2006 |
 Like a 1950's Detroit automaker, it
appears that nature prefers to build its proteins around a solid,
sturdy chassis. A new study combining advanced computational
modeling and cutting-edge experiments by molecular biologists at Rice
University and Baylor College of Medicine suggests that the most stable
parts of a protein are also the parts that fold first. The findings appear in the Sept. 13 issue of the journal Structure.
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