For centuries, geologists have recognized that the rocks that line riverbeds tend to be smaller and rounder further downstream. But these experts have not agreed on the reason these patterns exist. Abrasion causes rocks to grind down and become rounder as they are transported down the river.
New research is lighting up yet another reason for women to quit smoking.
Some Patients Receive Unnecessary Prioritization for Liver Transplantation, Penn Medicine Study Finds
Patients waiting for liver transplants who develop hepatopulmonary syndrome (HPS), a lung disorder associated with end-stage liver disease, are eligible to move up on the wait list.
When deciding what materials to use in building something, determining how those materials respond to stress and strain is often the first task. A material’s macroscopic, or bulk, properties in this area — whether it can spring back into shape, for example — is generally the product of what is happening on a microscopic scale.
New Sleep Gene, Redeye, Discovered in Fruitflies Promotes the Need to Sleep, According to Penn Study
All creatures great and small, including fruitflies, need sleep. Researchers have surmised that sleep – in any species -- is necessary for repairing proteins, consolidating memories, and removing wastes from cells. But, really, sleep is still a great mystery.
A team of researchers from the Perelman School of Medicine at the University of Pennsylvania has found that moderate to severe hot flashes continue, on average, for nearly 5 years after menopause, and more than a third of women experience moderate/severe hot flashes for 10 years or more after menopause.
Xiaowei Xu of the Perelman School of Medicine says, “This is the first time anyone has made scalable amounts of epithelial stem cells that are capable of generating the epithelial component of hair follicles.”
If the content of many a situation comedy, not to mention late-night TV advertisements, is to be believed, there’s an epidemic of balding men, and an intense desire to fix their follicular deficiencies.
Frederick Ding’s interest in making an impact by improving the lives of others begins with his work on campus assisting fellow students at the University of Pennsylvania.
James Shorter and postdoctoral fellow Meredith Jackrel of the Perelman School of Medicine are featured for their research on “reprogrammed” yeast protein that could lead to new brain disease therapies.