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Researchers identify photosynthetic dimmer switch

May 08, 2008 | User rating: 4.4 / 5 after 8 vote(s) | pda version

In a study of the molecular mechanisms by which plants protect themselves from oxidation damage should they absorb too much sunlight during photosynthesis, a team of researchers has discovered a molecular ...


Iron 'snow' helps maintain Mercury's magnetic field, scientists say

May 07, 2008 | User rating: 3.5 / 5 after 14 vote(s) | pda version

New scientific evidence suggests that deep inside the planet Mercury, iron “snow” forms and falls toward the center of the planet, much like snowflakes form in Earth’s atmosphere and fall to the ground.


A 'squeeze' in cuprates may explain superconducting temperatures

May 07, 2008 | User rating: 4.6 / 5 after 31 vote(s) | pda version

New experiments at Cornell have verified a theory that variations in the distance between atoms in cuprate superconductors account for differences in the temperature at which the material begins to superconduct. ...


Physicist confines plasma components in a trap within a trap

May 06, 2008 | User rating: 4.7 / 5 after 20 vote(s) | pda version

A University of Michigan professor has taken a step toward simulating a type of matter found in the crusts of neutron stars, in the cores of gas giant planets, and in exotic plasmas thought to be present in the earliest universe.


Creating Highly Sought Magnetic Nanoparticles in One Step

May 02, 2008 | User rating: 3.9 / 5 after 8 vote(s) | pda version

Researchers from the University of Minnesota have demonstrated a one-step technique for producing a class of magnetic nanoparticles that could be used in everything from biomedical applications to data storage. ...


Nano-designed transistors with disordered materials, but high performance

May 02, 2008 | User rating: 4.1 / 5 after 11 vote(s) | pda version

The Holy Grail for transistor designers has been the requirement to be able to get high performance at reduced costs over very large substrate areas. Transistors on cheap and flexible substrates like glass and plastics are ...


Updated version of GAIM model goes operational

May 02, 2008 | pda version

An updated version of the Global Assimilation of Ionospheric Measurements (GAIM) model went operational at the Air Force Weather Agency (AFWA) on February 22, 2008. The operational GAIM program has been under development ...


Spiraling nanotrees offer new twist on growth of nanowires

May 01, 2008 | User rating: 4.5 / 5 after 16 vote(s) | pda version

Since scientists first learned to make nanowires, the nano-sized wires just a few millionths of a centimeter thick have taken many forms, including nanobelts, nanocoils and nanoflowers.


'4-D' ionosphere map helps flyers, soldiers, ham radio operators

Apr 30, 2008 | User rating: 4.6 / 5 after 9 vote(s) | pda version

Today, at the Space Weather Workshop in Boulder, Colo., NASA-funded researchers released to the general public a new “4D” live model of Earth’s ionosphere. Without leaving home, anyone can fly through the ...


USC School of Dentistry researchers uncover link between osteoporosis drugs and jaw infection

Apr 30, 2008 | User rating: 4.7 / 5 after 6 vote(s) | pda version

A group of University of Southern California School of Dentistry researchers says it has identified the slimy culprits killing the jawbones of some people taking drugs that treat osteoporosis.


High-Flying Electrons May Provide New Test of Quantum Theory

Apr 29, 2008 | User rating: 4.8 / 5 after 37 vote(s) | pda version

Researchers at the National Institute of Standards and Technology and Max Planck Institute for Physics in Germany believe they can achieve a significant increase in the accuracy of one of the fundamental constants ...


Copper nanowires grown by new process create long-lasting displays

Apr 28, 2008 | User rating: 4.7 / 5 after 11 vote(s) | pda version

A new low-temperature, catalyst-free technique for growing copper nanowires has been developed by researchers at the University of Illinois. The copper nanowires could serve as interconnects in electronic device fabrication ...


'Sticky nanotubes' hold key to future technologies

Apr 28, 2008 | User rating: 4.2 / 5 after 14 vote(s) | pda version

Researchers at Purdue University are the first to precisely measure the forces required to peel tiny nanotubes off of other materials, opening up the possibility of creating standards for nano-manufacturing ...


Are nanobots on their way?

Apr 28, 2008 | User rating: 4.8 / 5 after 21 vote(s) | pda version

[The first real steps towards building a microscopic device that can construct nano machines have been taken by US researchers. Writing in the peer-reviewed publication, International Journal of Nanomanufacturing from ...


Scientists discover exotic quantum state of matter

Apr 24, 2008 | User rating: 4.7 / 5 after 77 vote(s) | pda version

A team of scientists from Princeton University has found that one of the most intriguing phenomena in condensed-matter physics -- known as the quantum Hall effect -- can occur in nature in a way that no one ...


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