Science & Technology

Image courtesy of Karin Peyer, 2001*Postosuchus*, the “alligator on stilts,’ was quite a mover in its day.How much different do the bones of similar animals have to be for the classification of a new species? That is the question that drove Stephanie Novak, a new doctoral candidate in the Department of Earth and Planetary Sciences in Arts & Sciences at Washington University in St. Louis, to develop a novel model to determine classification of a new species. Novak presented details of her model at the annual meeting of the Geological Society of America, held Nov.2-5 in Seattle.

Courtesy of Monterey Bay Area Research InstituteA fish on the ocean floor off California gazes at a sight no human has seen first-hand: a modified Raman spectrometer gathering data on a carbon dioxide sample.In collaboration with oceanographers from the Monterey Bay Aquarium Research Institute (MBARI), a team of geologists at Washington University in St. Louis is using a rare instrument on the ocean floor just west of California. One of their earliest projects was to see if it’s possible to capture carbon dioxide from the atmosphere and store it on the ocean floor. It’s the first deployment of the Raman spectrometer on the ocean floor.

A new book by botanists at Washington University in St. Louis enlightens both consumers of natural products and herbs and traditional physicians. Medical Botany, Plants Affecting Human Health, is the second edition of a 1977 book, Medical Botany, published by Walter Lewis, Ph.D., professor emeritus of biology, and Memory Elvin-Lewis, Ph.D., professor of microbiology and ethnobotany in biomedicine in Arts & Sciences at Washington University.

December/January Science & Technology Tip Sheet

Image by Trent L. Schindler, Nat’l Science Foundation, Arlington, VAComputer-based reconstruction of an arsinoithere, an extinct fossil mammal from Ethiopia that lived 27 million years ago.Tab Rasmussen, Ph.D., a professor of anthropology in Arts & Sciences at Washington University, and two of his graduate students, were part of an international team of researchers that discovered new fossils in the highlands of Ethiopia that are filling gaps in scientists’ understanding of the evolution of African mammals. The results are reported in the Dec. 4, 2003, issue of the journal Nature.

Researchers have devised a new hearing test that measures the auditory brainstem response 20 times faster than current methodology.The marvels of mathematics may open the door to a new, improved hearing test for newborns. A mathematician and a recent electrical engineering doctoral graduate from Washington University in St. Louis have devised a hearing test that measures the auditory brainstem response 20 times faster than current methodology. The technique allows for testing on small digital machines that takes just two minutes instead of the hour current methods take, and volunteers instead of medical personnel can administer it. This bodes well for mandatory hearing testing of newborns within three years.

Meriwether Lewis and William ClarkLewis and Clark, meet Robert Criss. Virtual explorer Robert Criss, Ph.D., professor of earth and planetary sciences at Washington University in St. Louis, has teamed up with Lewis and Clark to provide the oldest determinations of the magnetic declination of America’s interior.

John Lockwood programs the data enabling device to stop the SoBig worm.A computer scientist at Washington University in St. Louis has developed technology to stop malicious software – malware – such as viruses and worms long before it even has a chance to reach computers in the home and office. John Lockwood, Ph.D., an assistant professor of computer science at Washington University, and the graduate students that work in his research laboratory have developed a hardware platform called the Field-programmable Port Extender (FPX) that scans for malware transmitted over a network and filters out unwanted data.

Jeff Ojemann/University of WashingtonImproved imaging of brain’s language areas may replace more invasive pre-surgery mapping techniques, such as the electrocortical stimulation method shown here.Advances in neurosurgery have opened the operating room door for an amazing array of highly invasive forms of brain surgery, but doctors and patients still face an incredibly important decision – whether to operate when life-saving surgery could irrevocably damage a patient’s ability to speak, read or even comprehend a simple conversation. Now, researchers at Washington University in St. Louis are developing a painless, non-invasive imaging technique that surgeons here are using to better evaluate brain surgery risks and to more precisely guide operations so that damage to sensitive language areas is avoided. The breakthrough could improve odds of success in an increasingly common surgery in which damaged sections of a patient’s temporal brain lobe are removed in an effort to alleviate epileptic seizures. November is National Epilepsy Awareness Month.

November Science & Technology Tip Sheet