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Cloudy with a chance of pebble showers
Simulation suggests rocky exoplanet has bizarre atmosphere
Sept. 29,
2009 --
Intrigued by the discovery last February of Corot-7b, a rocky exoplanet, Washington University in St. Louis scientists set out to investigate its atmosphere the only way so-far possible: mathematically and by simulation. Tidally locked with its star and orbiting very close to it, the planet is hot enough to melt rock on its star-facing side. Its atmosphere consists of the components of silicate rocks in gaseous form and, the simulation suggests, periodically rains pebbles or grains of sand onto the molten surface below.
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Developing 'next generation of creative thinkers'
Free science camp for middle schoolers from traditionally underrepresented populations
June 12,
2009 --
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| WUSTL Photo Services |
| WUSTL's ExxonMobil Bernard Harris Summer Science Camp |
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Washington University in St. Louis will host its third ExxonMobil Bernard Harris Summer Science Camp June 14-26. The Danforth Campus will welcome 48 middle schoolers from traditionally underrepresented populations who are academically qualified, recommended by their teachers and genuinely interested in math and science. The free residential camp gives students a first-hand experience with experiments, role models and innovative programs to encourage their continued participation in math and science courses in school. A special "ExxonMobil Media Day" will be held from 9:30-11:30 a.m. June 17 at the Mallinckrodt Center, lower level. Campers will work side by side with scientists to complete an engineering challenge.
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Going platinum
New catalyst could boost cleaner fuel use
May 14,
2009 --
Material scientists at Washington University in St. Louis have developed a technique for a bimetallic fuel cell catalyst that is efficient, robust and two-to-five times more effective than commercial catalysts. The novel technique eventually will enable a cost effective fuel cell technology, which has been waiting in the wings for decades and should give a boost for cleaner use of fuels worldwide.
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Birds of a feather
Study finds particles, molecules prefer not to mix
May 4,
2009 --
In the world of small things, shape, order and orientation are surprisingly important, according to findings from a new study by chemists at Washington University in St. Louis. Lev Gelb, WUSTL associate professor of chemistry, his graduate student Brian Barnes, and postdoctoral researcher Daniel Siderius, used computer simulations to study a very simple model of molecules on surfaces, which looks a lot like the computer game "Tetris." They have found that the shapes in this model (and in the game) do a number of surprising things.
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Novel energy
DOE makes largest research award in Danforth Campus history
April 28,
2009 -- Washington University and the Donald Danforth Plant Science Center have received two awards totaling $35 million from the U.S. Department of Energy (DOE) to do research on novel energy initiatives. At $20 million, the Washington University research award is the largest ever received on the Danforth Campus. The $15 million for the Donald Danforth Plant Science Center is the largest the organization has ever received.
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'Taco shell' protein
Orientation of middle man in photosynthetic bacteria described
April 13,
2009 --
Researchers at Washington University in St. Louis have figured out the orientation of a protein in the antenna complex to its neighboring membrane in a photosynthetic bacterium, a key find in the process of energy transfer in photosynthesis. Robert Blankenship, Ph.D., Markey Distinguished Professor of Biology and Chemistry in Arts & Sciences, led a team that for the first time combined chemical labeling with mass spectroscopy to verify the orientation. The team also included Michael Gross, Ph.D., WUSTL Professor of Chemistry, Immunology and Medicine, and Chemistry graduate students Jianzhong Wen and Hao Zhang. A paper describing this work appeared recently in the Proceedings of the National Academy of Sciences USA.
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New spin on laser-flash analysis
Technique measures heat transport in the Earth's crust
March 30,
2009 --
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| David Kilper/WUSTL Photo Services |
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Putting a new spin on an old technique, Anne M. Hofmeister, Ph.D., research professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis, has revolutionized scientists' understanding of heat transport in the Earth's crust, the outermost solid shell of our planet.
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Haskin honored with named feature on the Moon
WUSTL man on the Moon
Feb. 3,
2009 --
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| Haskin |
A crater on the moon has been named after the late Larry Haskin, Ph.D., who spent much of his career as a WUSTL researcher in the Department of Earth & Planetary Sciences.
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'Good as gold'
Novel technique changes lymph node biopsy, reduces radiation exposure in breast cancer patients
Jan. 13,
2009 --
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| David Kilper/WUSTL Photo |
| WUSTL biomedical engineers Younan Xia (left) and Lihong Wang examine the photoacoustic tomography machine (PAT) in Wang's Whitaker Building laboratory. |
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Information obtained from a new application of photoacoustic tomography (PAT) is worth its weight in gold to breast cancer patients. For the first time, Lihong Wang, Ph.D., Gene K. Beare Distinguished Professor in the Department of Biomedical Engineering, with a joint appointment in Radiology, and Younan Xia, Ph.D., James M. McKelvey Professor in Biomedical Engineering, with a joint appointment in chemistry in Arts & Sciences, both at Washington University in St. Louis, have used gold nanocages to map sentinel lymph nodes (SLN) in a rat noninvasively using PAT.
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'Chips off the old block'
Plant polymerases IV and V are special forms of Polymerase II
Jan. 6,
2009 -- It's a little like finding out that Superman is actually Clark Kent. A team of biologists at Washington University in St. Louis has discovered that two vital cellular components, nuclear RNA Polymerases IV and V (Pol IV and V), found only in plants, are actually specialized forms of RNA Polymerase II, an essential enzyme of all eukaryotic organisms, including humans.
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