Ph.D. Candidate Helena de Llanos’ dissertation jumps from the page to the screen.
Welcome to the Graduate Division of Penn's School of Arts and Sciences.
The Graduate Division consists of some 33 graduate programs. Disciplinary strength is at the heart of Penn's excellence in research and graduate training. Equally important, however, is the spirit of interdisciplinary collaboration that pervades all of our programs.
University of Pennsylvania President Amy Gutmann today announced that Vice President Joseph R. Biden, Jr. has been named the Benjamin Franklin Presidential Practice Professor at the University of Pennsylvania, where he will lead the Penn Biden Center for Diplomacy and Global Engagement, a new center focused principally on diplomacy, foreign policy, and national security.
Every time a hormone is released from a cell, every time a neurotransmitter leaps across a synapse to relay a message from one neuron to another, the cell must undergo exocytosis. This is the process responsible for transporting cellular contents via lipid-encapsulated vesicles to the cell surface membrane and then incorporating or secreting them through membrane fusion.
If one were to take a liquid—any liquid—and cool it down rapidly enough so that it doesn’t have a chance to crystallize, the result would be glass. Glass is so viscous that it takes too long to flow for anyone to realize that it is liquid rather than solid.