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Bacterial toxin closes gate on immune response, Penn researchers discover
Researchers at the University of Pennsylvania School of Medicine have demonstrated that a bacterial toxin from the common bacterium Staphylococcus aureus shuts down the control mechanism of the tunnel, called an ion channel, in immune cell membranes. view more (2008-02-14)
Scientists learn structure of enzyme in unusual virus
Biologists have determined the three-dimensional structure of an unusual viral enzyme that is required in the assembly of new viruses. view more (2007-09-18)
The salt of life and genes
Mineral salts are essential for living organisms. To be precise, it is from these, living cells get their basic components, the ions. Common salt, for example, contains chloride and sodium ions which the cell uses to establish and maintain electrochemical balance with the environment. In order to achieve sodium equilibrium in animal cells, for... view more... (2003-04-16)
Ytterbium gains ground in quest for next-generation atomic clocks
An experimental atomic clock based on ytterbium atoms is about four times more accurate than it was several years ago, giving it a precision comparable to that of the NIST-F1 cesium fountain clock, the nation's civilian time standard, scientists at the National Institute of Standards and Technology (NIST) report in Physical Review Letters. view more (2009-08-12)
Technique quickly identifies bacteria for food safety, health care and homeland security
Researchers at Purdue University have used a new technique to rapidly detect and precisely identify bacteria, including dangerous E. coli, without time-consuming treatments usually required. view more (2007-01-02)
Nanoscale blasting adjusts resistance in magnetic sensors
A new process for adjusting the resistance of semiconductor devices by carpeting a small area of the device with tiny pits, like a yard dug up by demented terriers, may be the key to a new class of magnetic sensors, enabling new, ultra-dense data storage devices. view more (2007-08-17)
One protein, two channels: Scientists explain mechanism in aquaporins
Using computer simulations and experimental results, researchers at the University of Illinois at Urbana-Champaign and the University of Arizona have identified a key component of the gating mechanism in aquaporins that controls both the passage of water and the conduction of ions. view more (2006-09-22)
DNA constraints control structure of attached macromolecules
A new method for manipulating macromolecules has been developed by researchers at the University of Illinois at Urbana-Champaign. The technique uses double-stranded DNA to direct the behavior of other molecules. view more (2005-06-29)
Racing Ahead at the Speed of Light
Imagine trying to catch up to something moving close to the speed of light - the fastest anything can move - and sending ahead information in time to make mid-path flight corrections. Impossible? Not quite. view more (2008-02-07)
Carbon molecule with a charge could be tomorrow's semiconductor
Virginia Tech chemistry Professor Harry Dorn has developed a new area of fullerene chemistry that may be the backbone for development of molecular semiconductors and quantum computing applications. view more (2008-09-09)
New Satellite To Study Explosive Solar Flares
A small NASA spacecraft, dedicated solely to the study of high energy processes in gigantic explosions in the atmosphere of the Sun, is scheduled to be launched early next week. Although the 293 kg (645 lb) satellite, known as the High Energy Solar Spectroscopic Imager (HESSI), carries only one scientific instrument, it will make a major... view more... (2002-01-31)
Frozen lightning: NIST's new nanoelectronic switch
Researchers at the National Institute of Standards and Technology (NIST) have demonstrated a prototype nanoscale electronic switch that works like lightning—except for the speed. view more (2007-03-05)
Immune reaction to metal debris leads to early failure of joint implants
Researchers at Rush University Medical Center have identified a key immunological defense reaction to the metals in joint replacement devices, leading to loosening of the components and early failure. view more (2009-03-05)
Probing a rare material spin state at NIST
A team of international physicists that includes researchers from the National Institute of Standards and Technology (NIST) has found experimental evidence of a highly sought-after type of arrangement of atomic magnetic moments, or spins, in a series of materials. view more (2007-09-17)
Newly found DNA catalysts cleave DNA with water molecule
Better tools for manipulating DNA in the laboratory may soon be possible with newly discovered deoxyribozymes (catalytic DNA) capable of cleaving single-stranded DNA, researchers at the University of Illinois say. view more (2009-08-17)
Saving energy & reducing air pollution by using hardened magnesium alloys
The use of magnesium alloys in engineering applications is becoming increasingly important as a relatively low density allows savings in energy consumption and therefore reduction in air pollution. view more (2005-10-12)
Fantastic Voyage: A new nanoscale view of the biological world
Echoing the journey through the human body in Fantastic Voyage, doctors might soon be able to track individual donor cells after a transplant, or to find where and how much of a cancer treatment drug there is within a cell. view more (2006-10-05)
High-res view of zinc transport protein
How much difference can a tenth of a nanometer make? When it comes to figuring out how proteins work, an improvement in resolution of that miniscule amount can mean the difference between seeing where atoms are and understanding how they interact. view more (2009-09-14)
First high-resolution images of bone, tooth and shell formation
Researchers at Eindhoven University of Technology (TU/e) have for the first time made high-resolution images of the earliest stages of bone formation. They used the world's most advanced electron microscope to make three-dimensional images of the nano-particles that are at the heart of the process. view more (2009-03-13)
A new window into the deformation of nanoscale materials
Materials on the nanoscale don't always have the same properties they would in bulk; for one thing, nanomaterials are often a lot harder. Unlike most bulk materials, a crystal that is small enough can be perfect, free of defects, capable of achieving strength near its ideal theoretical limit. view more (2006-08-14)
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