Author: Diana Lutz

The School of Engineering & Applied Science at Washington University in St. Louis will dedicate a new building, Preston M. Green Hall, Friday, Sept. 23, and in conjunction will hold the symposium “Challenges & Opportunities in Engineering Education & Research.” The symposium, which will feature National Science Foundation Director Subra Suresh, DSc, is open to the public. It will be held from at 2:30 p.m. in Room 300 of the Laboratory Sciences building on WUSTL’s Danforth Campus. 

Raised in a secret town in Siberia and trained in control theory for ICBM guidance, Igor Efimov, the Lucy & Stanley Lopata Distinguished Professor of Biomedical Engineering in the School of Engineering & Applied Science, wouldn’t be working at WUSTL had the Soviet Union not broken up immediately after he defended his dissertation in biophysics, providing him an opportunity to leave. His research specialty is disturbances of cardiac rhythm known as arrhythmias, electrical impulses that race around and around the heart instead of moving from one end of the heart to the other and then pausing before repeating.

The Mars rover Opportunity, which was designed to operate for three months and to rove less than a mile, has now journeyed more than seven years crossing more than 21 miles. Today, it is poised at the edge of a heavily eroded impact basin, the possible location of clay minerals formed in low-acid wet conditions on the red planet.

This summer students participating in the McDonnell Academy Global Energy and Environmental Partnership (MAGEEP) International Summer Experience traveled to the Shenzhen-Hong Kong metropolitan area to learn about alternative energy research and practice but also to explore the festivals, museums and food of another culture.

Biologist Alan R. Templeton fell in love with the eastern collared lizard that lives in the hot, dry Ozark glades when he was 13. By the time he returned from  postgraduate work, 75 percent of the lizard populations had vanished. Over the next 30 years, he reintroduced lizards to a few glades and then sought to establish the disturbance regime that had once sustained them by advocating for the highly controversial process of landscape-scale burning. The cover article in the September issue of Ecology celebrates the success of this prolonged effort.

A clinical warning system undergoing a feasibility study at Barnes-Jewish Hospital in St. Louis will include wireless sensors that take blood oxygenation and heart-rate readings from at-risk patients once or twice a minute. The data  and lab results in the electronic medical record will be continually scrutinized by a machine-learning algorithm looking for signs of clinical deterioration. If any such signs are found, the system will call a nurse on a cellphone, alerting the nurse to check on the patient.

Two recent research studies have found differences between the distribution of potassium-ion-channel variants in the mouse heart and in the human heart. In the mouse, the ion channels in the atria are different from those in the ventricles. In people there is no such chamber specificity. The difference is crucially important for the development of safe and effective cardiovascular drugs.

Analysis of new images of a curious “hot spot” on the far side of the Moon reveal it to be a small volcanic province created by the upwelling of silicic magma. The unusual location of the province and of the surprising composition of the lava that formed it offer tantalizing clues to the Moon’s thermal history. The discovery has just been published in Nature Geoscience.

A ring-shaped laser no bigger than a pinprick can accurately detect and count individual viruses, the particles that jumpstart cloud formation or those that contaminate the air we breathe. A particle disturbs the light circulating in the ring, splitting the lasing frequency. This split is a measure of the particle’s size.

DNA analysis of more than 1300 coconuts from around the world reveals that the coconut was brought under cultivation in two separate locations, one in the Pacific basin and the other in the Indian Ocean basin. What’s more, coconut genetics also preserve a record of prehistoric trade routes and of the colonization of the Americas.