Author: Diana Lutz

HoltenA chemist at Washington University in St. Louis and his colleagues has taken an elegant chemical approach to turn a nonfluorescent organometallic complex into a strong emitter by hampering its internal rotations at the molecular level. Dewey Holten, Ph.D., Washington University professor of chemistry, Jonathan Lindsey, Ph.D., of North Carolina State University and David Bocian, Ph.D., University of California, Riverside, have made a molecule photoluminescent by hindering its intramolecular rotation.

The saying “what goes around comes around” has a particular resonance for Pratim Biswas, Ph.D., the Stifel and Quinette Jens Professor of Environmental Engineering Science. Twenty-three years ago, as a master’s degree candidate at the University of California, Los Angeles, Biswas did a thesis on heat transfer, with an eye toward solar power, with one […]

For the first time, researchers have identified organic material in interplanetary dust particles (IDPs), gathered from the Earth’s stratosphere, that was made before the birth of our Solar System.

Courtesy Missouri Historical Society Photographs and Prints Collections.Lee DeForest (seated) sending wireless telegraph message from the Louisiana Purchase Exposition. Photograph, 1904.April 30, 2004, marks the 100th anniversary of the 1904 World’s Fair, an event that showcased science advancements that startled the imagination a century ago and foretold technology still in place today. The fair was headquartered on the campus of Washington University in St. Louis, where significant scientific developments continue today, most notably at the nation’s second-ranked medical school but also across many science and engineering disciplines.

Image courtesy of the Cellar Store, San Bernardino, CA.A new book is persuading ecologists to think “outside the helmet”.An ecologist at Washington University in St. Louis has co-authored a new book that is forcing the pith helmet set to “think outside the helmet.” Jonathan M. Chase, Ph.D., assistant professor of biology in Arts& Sciences at Washington University and Mathew A. Leibold, Ph.D.,associate professor of integrative biology at the University of Texas at Austin, take on one of the tenets of ecology, niche theory, which holds that species evolve and thrive because of their particular environment and what activities they do to shape that environment, providing them their niche, if you will.

BlankCarrine Blank, Ph.D. , assistant professor of earth and planetary sciences in Arts & Sciences, has found that the currently accepted dates for the appearance of oxygen-producing bacteria and sulfur-producing bacteria on the early earth are not correct. She believes that these bacteria appeared on earth much later than is now believed.

Photo by David KilperResearcher Christine Floss checks the sample chamber of the NanoSIMS instrument on the fourth floor of Compton Hall.Christine Floss says the organic material probably was formed in molecular clouds in the interstellar medium before the formation of the solar system.

BrentA large team of researchers, including a computer scientist at Washington University in St. Louis, has effectively completed the genome sequence of the common laboratory brown rat, Rattus norvegicus, This makes the third mammal to be sequenced, following the human and mouse.

To meet design and cost changes, industry and government are considering clockless computing.Computing royalty, including Ivan Sutherland, the father of computer graphics, and Wesley A. Clark, the designer of the world’s first personal computer, will gather at a computing symposium Friday, March 26th, 2004, from 1:00-5:30 p.m. at Washington University in St. Louis’s Whitaker Hall Auditorium. As part of the University’s 150th anniversary of its founding, participants will honor time by contemplating how computing can evade time as the industry prepares to go clockless.

Anthrax is nasty stuff. An environmental engineer at WUSTL uses smart catalysts in his device that can detect the presence of airborne anthrax and disable it.An environmental engineer at Washington University in St. Louis with his doctoral student has patented a device for trapping and deactivating microbial particles. The work is promising in the war on terrorism for deactivating airborne bioagents and bioweapons such as the smallpox virus, anthrax and ricin, and also in routine indoor air ventilation applications such as in buildings and aircraft cabins.