PHILADELPHIA –- Collaboration by chemists, physicists and materials scientists at the University of Pennsylvania has created a simple and inexpensive method to rapidly grow centimeter-scale membranes of binary nanocrystal superlattices, or BNSLs, by crystallizing a mixture of nanocrystals on a liquid surface.
AMP-activated protein kinase, or AMPK, is a master regulator protein of metabolism that is conserved from yeast to humans. When a cell is low on fuel, AMPK shuts down processes that use energy and turns on processes that produce energy.
Biologists have been studying how AMPK works for several decades and know that once it is activated, AMPK turns on a large number of genes by passing the "make more energy" message through numerous signaling cascades in the cell. What was not known, until now, was that AMPK also works via an epigenetic mechanism to slow down or stop cell growth.
Seven faculty members in the University of Pennsylvania School of Veterinary Medicine are recipients of 2010 teaching awards.
With graceful eyelashes, long flaxen hair and serene expression, the "Beauty of Xiaohe" seems to have just softly fallen to sleep-yet she last closed her eyes nearly 4,000 years ago. She was found, and excavated, in 2003, one of hundreds of spectacularly preserved mummies buried in the harsh desert sands of the vast Tarim Basin, in the Far Western Xinjiang Uyghur Autonomous Region of China.
Susan Volk and Michael Atchison of the School of Veterinary Medicine discuss veterinarians’ role in translational research.
Cindy Christian of the School of Medicine and Safe Place, the Center for Child Protection and Health, is praised for her child advocacy in light of her appointment as child-abuse expert at the Philadelphia Department of Human Services.
Soccer referees may have an unconscious bias towards calling fouls based on a play’s direction of motion, according to a new study. Researchers at the University of Pennsylvania School of Medicine found that soccer experts made more foul calls when action moved right-to-left, or leftward, compared to rightward action, suggesting that two referees watching the same play from different vantage points may be inclined to make a different call.
Botswana-UPenn Partnership’s mobile-phone health-care service is featured.
Penn researchers are cited for their study of a potential referee bias at the World Cup.