Cornell University microbiologists, looking for bioremediation microbes to "eat" toxic pollutants, report the first field test of a technique called stable isotopic probing (SIP) in a contaminated site. And they announce the discovery and isolation of a bacterium that biodegrades naphthalene in coal tar contamination.
Scanning electron micrograph shows the newly discovered Polaromonas naphthalenivorans strain CJ2 bacterium dividing in two, each about 1 micron in diameter. The napthalene-eating bug was found in a coal-tar disposal site along the Hudson River by researchers from the NSF Microbial Observatory at Cornell University.
Copyright © 2003 PNAS.
Although naphthalene is not the most toxic component in coal tar, the microbiologists say their discovery might eventually help to speed the cleanup of hundreds of 19th and 20th century gasworks throughout the United States where the manufacture of gas from coal for homes and street lighting left a toxic legacy in the ground.
The National Science Foundation-funded research is reported in the online edition of Proceedings of the National Academy of Sciences (PNAS early edition, Oct. 27, 2003) by researchers working at the NSF Microbial Observatory at Cornell.
Roger Segelken | Cornell News
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The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
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