CHAMPAIGN, Ill. -- Recyclable plastics that contain ring-shaped polymers may be a key to developing sustainable synthetic materials. Despite some promising advances, researchers said, a full understanding of how to processes ring polymers into practical materials remains elusive. In a new study, researchers identified a mechanism called "threading" that takes place when a polymer is stretched - a behavior not witnessed before. This new insight may lead to new processing methods for sustainable polymer materials.
Gastric cancer, Q fever, Legionnaires' disease, whooping cough--though the infectious bacteria that cause these dangerous diseases are each different, they all utilize the same molecular machinery to infect human cells. Bacteria use this machinery, called a Type IV secretion system (T4SS), to inject toxic molecules into cells and also to spread genes for antibiotic resistance to fellow bacteria. Now, researchers at Caltech have revealed the 3D molecular architecture of the T4SS from the human pathogen Legionella pneumophila with unprecedented details.
Machine learning (ML), a form of artificial intelligence that recognizes faces, understands language and navigates self-driving cars, can help bring to Earth the clean fusion energy that lights the sun and stars. Researchers at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) are using ML to create a model for rapid control of plasma -- the state of matter composed of free electrons and atomic nuclei, or ions -- that fuels fusion reactions.
When it comes to pitching business ideas to potential investors, an entrepreneur's excitement and enthusiasm can be the difference between dreams taking shape or ultimately falling flat.
But it's not just the intensity of enthusiasm that's important, according to a recent study by a team led by Georgia Institute of Technology researchers. How long an entrepreneur displays the highest level of excitement during a pitch also plays a major role in predicting success in receiving funding.
Basically, too much enthusiasm can be a bad thing.
UPTON, NY--From the ancient pyramids to modern buildings, various three-dimensional (3-D) structures have been formed by packing shaped objects together. At the macroscale, the shape of objects is fixed and thus dictates how they can be arranged. For example, bricks attached by mortar retain their elongated rectangular shape. But at the nanoscale, the shape of objects can be modified to some extent when they are coated with organic molecules, such as polymers, surfactants (surface-active agents), and DNA.
Researchers at Indiana University School of Medicine have found a way to charge up the fight against bacterial infections using electricity.
Conservation decisions based on population counts may fail to protect large, slow-breeding animals from irrevocable decline, according to new research coinciding with Endangered Species Day.
Changes to alpine streams fed by glaciers and snowfields due to a warming climate threaten to dramatically alter the types of bacteria and other microbes in those streams, according to a research team that included a University of Wyoming scientist.
But streams that are fed by underground ice insulated by rock -- called "icy seeps" -- offer some hope that the impact of climate change will be less severe in some areas, say the researchers, who include Lusha Tronstad, research scientist with UW's Wyoming Natural Diversity Database (WYNDD).
Firms looking to boost their market value and make a favorable impression on investors might consider opportunities to testify before Congress, according to a new study by management researchers at the University of Arkansas.
If chosen to testify, these companies could benefit from publicizing such events, said Jason Ridge, assistant professor of management in the Sam M. Walton College of Businees, and the study's lead author.