An innovative new software can detect and correct a database impaired by an attack while the database system continues to process transactions, says a Penn State researcher.

“We simulated attackers’ behaviors on a database and then monitored the response of the database,” said Dr. Peng Liu, assistant professor of information sciences and technology. “We can’t prevent attackers from getting in, but with this technology, the database can heal itself on-the-fly.”

Liu perfor

The rapid increase of nitrogen falling from the sky as a result of fossil-fuel combustion and crop fertilization, combined with carbon stored in Earth’s soils, could change the rate of the greenhouse gas, carbon dioxide, rising into the atmosphere, according to a new study.

Scientists believe about 300 times more carbon is stored in soils than is being put in the atmosphere in the form of C02, according to biology Assistant Professor Alan Townsend of the University of Colorado at Bould

Extreme cold and high heat help optimize the metal’s microstructure

Combining old-fashioned metal-working techniques with modern nanotechnology, engineers at The Johns Hopkins University have produced a form of pure copper metal that is six times stronger than normal, with no significant loss of ductility.

The achievement, reported in the Oct. 31 issue of the journal “Nature,” is important because earlier attempts to strengthen a pure metal such as copper have almost always

Report provides key information resource for local and European decision makers

The Apheis programme, funded by the EC`s Health and Consumer Protection DG, today released the findings of a health impact assessment of particulate air pollution it conducted in 26 cities in 12 European countries during 2001.

The Apheis (Air Pollution and Health: A European Information System) study revealed in particular that air pollution continues to pose a significant threat to public health

Herpes viruses have two infectious phases: one just after infecting a new host, and one years or decades later when they reactivate.

According Michael Stumpf (UCL), Zoe Laidlaw (University of Sheffield), and Vincent Jansen (Royal Holloway, University of London), that latency period evolved because it allows the viruses to flourish when the availability of hosts from year to year is highly unpredictable.

Until now, scientists have thought that viruses like herpes simplex 1 a

Researchers from the University of Pittsburgh Medical Center have made significant progress in identifying the first susceptibility gene for clinical depression, the second leading cause of disability worldwide, possibly providing an important step toward changing the way doctors diagnose and treat major depression that affects nearly 10 percent of the population.

Research results, which were accepted for rapid publication and published today in the American Journal of Medical Genetics, sho