Method helps nanoscale engineers choose self-assembling proteins
Engineering structures on the smallest possible scales -- using molecules and individual atoms as building blocks -- is both physically and conceptually challenging. An interdisciplinary team of researchers at the University of Pennsylvania has developed a method of computationally selecting the best of these blocks, drawing inspiration from the similar behavior of proteins in making biological structures. The researchers’ designed structure (left) was inspired by natural viruses, such as the tobacco mosaic virus (right).
Image credit: Gevorg Grigoryan, University of Pennsylvania
RedOrbit Images Of The Day - Earth
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite acquired this image of Rammasun at 1:00 p.m. local time (0500 UTC) on July 15, just before it made landfall. By the time the storm had passed over the Philippines on July 16, it had dropped more than 200 millimeters (8 inches) of rain on parts of Luzon, Samar, and Panay.
Rammasun was mild in comparison to Haiyan, a record-breaking typhoon that left more than 7,300 people dead or missing. So far, officials have blamed 94 deaths on Rammasun in the Philippines, mostly due to falling trees and power lines. But it could have been much worse, as the storm’s eyewall collapsed as it neared the city, dropping winds to only 20 mph (32 km/h) at the Manila airport.
After raking the Philippines, Super Typhoon Rammasun made two landfalls in China and passed over Vietnam before dissipating. At the time of this writing, authorities have confirmed 46 deaths in China due to the storm and at least 11 in Vietnam. Damage to infrastructure, homes, and agriculture is estimated in the billions of dollars across the swath of the storm.
Credit: Jeff Schmaltz, MODIS Land Rapid Response Team, NASA GSFC
USGS Earthquake ShakeMaps
5.7 - BOUGAINVILLE REGION, PAPUA NEW GUINEA
Date: Wed, 30 Jul 2014 16:00:58 UTC
- NASA's Earth Observatory
- EPOD / Earth Science Picture of the Day
- TPOD / Thunderbolts Picture of the Day