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Gizmorama - Zirconia might help jet engine operation
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Good Morning,
We are welcoming Spring in today with a snow storm. I love
the snow, but I think I have had my fill this year! I hope
you have enjoyed this weeks issues. Have a great weekend!
See you Monday,
Erin
Questions? Comments? Email me at: mailto:gizmo@gophercentral.com
Email your comments
P.S. You can discuss this issue or any other topic in the new
Gizmorama forum. Check it out here...
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Hubble finds methane on extrasolar planet
The U.S. space agency said the Hubble Space Telescope has
detected the first organic molecule found in the atmosphere
of a planet orbiting another star. The National Aeronautics
and Space Administration said the event marks an important
step in eventually identifying signs of life on planets
outside our Solar System. "This is a crucial stepping stone
to eventually characterizing prebiotic molecules on planets
where life could exist", said Mark Swain of NASA's Jet
Propulsion Laboratory in Pasadena, Calif. Swain led the team
that made the discovery. The methane signature was found in
the atmosphere of the Jupiter-sized extrasolar planet HD
189733b, although the researchers said the planet is too hot
for life to exist as we know it. Although methane has been
detected on most of the planets in our own solar system, the
scientists said the Hubble discovery is the first to detect
any organic molecule on a world orbiting another star.
The finding, Swain said, also confirms the existence of
water molecules in the planet's atmosphere. The Hubble Space
Telescope is jointly operated by NASA and the European Space
Agency. The discovery is detailed in the journal Nature.
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Zirconia might help jet engine operation
U.S. engineers are developing a technique to coat jet engine
turbine blades with zirconium dioxide, known as zirconia, to
combat high-temperature corrosion. Ohio State University
Professor Nitin Padture, who led the study, said the zirconia
chemically converts sand and other corrosive particles that
build up on the blades into a new, protective outer coating --
in effect allowing the blade to constantly renew itself. He
said the technology might enable manufacturers to use new
kinds of heat-resistant materials in engine blades, so that
jet engines will be able to run hotter and more efficiently.
Padture, who began the research while at the University of
Connecticut, is working with the Inframat Corp., a
nanotechnology company, to further develop the concept. The
University of Connecticut has applied for a patent on the
technology. The research that included doctoral student
Aysegul Aygun; former postdoctoral researcher Alexander
Vasiliev, who is now at the Russian Academy of Sciences; and
Xinqing Ma, a scientist at the Inframat Corp., appeared in a
recent issue of the journal Acta Materialia.
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Study may lead to new CF treatments.
Canadian scientists said a study identifying several compounds
that block activity of a key protein might lead to innovative
cystic fibrosis therapies. The University of Toronto
researchers said their findings might also serve as a model
for future therapies against the human immunodeficiency virus.
A team led by Professor Igor Stagljar identified compounds that
block activity of the protein exoenzymeS. One compound, exosin,
significantly inhibited infections in mammalian cells, showing
promise for increasing the effectiveness of antibiotics in the
treatment of chronic and acute bacterial respiratory infections
in cystic fibrosis patients. "These studies created a road map
to the rational design of more potent, highly selective
inhibitors against other similar toxins using a totally novel
yeast-based approach," Stagljar said. "This innovative approach
is an important advance, not only for the value it may have in
cystic fibrosis treatment, but also because this technique
could be used to design novel therapies for any bacterial
pathogen as well as the HIV virus." The scientists now plan to
test the action of their inhibitors in an animal model of
cystic fibrosis. The research that included graduate student
Anthony Arnoldo is detailed in the online edition of the journal
PLoS Genetics.
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