- Number 342 |
- July 25, 2011
DOE’s Savannah River National Laboratory is winding down the initial phases of testing of prototype systems for detecting radioactive material in cargo containers unloaded from ships. Next, the systems head for the Port of Virginia in Norfolk for testing in a real-world setting. This testing is being conducted by the Department of Homeland Security (DHS) Domestic Nuclear Detection Office (DNDO) as part of the On-Dock Rail (ODR) program. A group of VIPs, including congressional staffers and representatives of two DHS agencies, recently visited SRNL to see a demonstration of the system and its testing procedures first-hand.
It was front page news around the world: a drug designed to disrupt malignant melanoma, the deadliest form of skin cancer, was so successful in its latest round of testing in humans that the tests were halted—like an early-round knockout in boxing—so patients in the trial who were receiving other treatments could be moved to the new medicine.
In the battle to reduce our need for fossil fuels, scientists at DOE’s Pacific Northwest National Laboratory, Washington University in St. Louis and Purdue University are turning to an unassuming ally: known as Cyanothece 51142. This organism is commonly referred to as a cynaobacteria. The researchers developed a computer model that can predict which of the organism's genes are central to capturing energy from sunlight and using it to produce fuel."Our model is the first of its kind for cyanobacteria," said Jason McDermott, a PNNL computational biologist and the study’s lead author. "Previous models have only zoomed in on specific aspects of cyanobacteria. Ours looks at the entire organism to find out what makes Cyanothece tick."
A new approach to growing graphene greatly reduces problems that have plagued researchers in the past and clears a path to the crystalline form of graphite's use in sophisticated electronic devices of tomorrow. Findings of researchers at DOE's Oak Ridge National Laboratory demonstrate that hydrogen rather than carbon dictates the graphene grain shape and size, according to a team led by ORNL's Ivan Vlassiouk, a Eugene Wigner Fellow, and Sergei Smirnov, a professor of chemistry at New Mexico State University.
“Hydrogen not only initiates the graphene growth, but controls the grapheme shape and size,” Vlassiouk said. “In our paper, we have described a method to grow well-defined graphene grains that have perfect hexagonal shapes pointing to the faultless single crystal structure.”