Advances in the molecular modeling and simulation of complex biological systems are enabling researchers to study how certain microbial systems may play an important role in the remediation of contaminated soils. One target is Pseudomonas aeruginosa, a common microbe in sediments and the subsurface. This bacterium is also an important opportunistic pathogen that can cause fatal infections in people with a weakened immune systems.
T.P. Straatsma is leading a team of researchers modeling the lipopolysaccharide outer membrane of P. aeruginosa to learn how the membrane responds to its environment. This research is addressing the question of how this microbe adsorbs to mineral surfaces and what the mechanism is for the uptake and reduction of heavy metals. This has signifi cant implications for bioremediation applications if these metals are radioactive and are reduced to insoluble form to prevent further spreading of the contamination.
In another project, the team also is addressing the health related issues concerning this microbe. Again focusing on the outer membrane, Straatsma and his coworkers are studying the role of a range of proteins embedded in the membrane, as well as the mechanism of action of certain antibiotics that are effective in treating P. aeruginosa infections that plague cystic fi brosis patients, burn victims and patients with compromised immune systems.
Brenda Pittsley | EurekAlert!
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More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
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Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
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The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
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Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
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