ORNL supercomputer simulation wins prize for fastest-running science application
... this behavior without artificial cooling.
The team studied the local repulsion
between electrons on the same atom. Because electrons have a negative ... to become superconducting, however, the electrons must overcome this repulsion
and join into units called Cooper pairs. The team is looking to take ...
Weird water: Discovery challenges long-held beliefs about water's special properties
... materials into their imitator and showed that it had the same oil-water repulsion
as real water across a range of temperatures. They also simulated ... it has these very special properties. To show that you can have oil-water repulsion
without hydrogen bonds is quite interesting.
Debenedetti noted that ...
New computer simulation helps explain folding in important cellular protein
... about membrane proteins in general, too. They found that unlike some proteins for which folding is mainly governed by their attraction to or repulsion
by water, the process in GpA is driven by a subtle interplay between multiple types of interactions.
New windows opened on cell-to-cell interactions
... in which like-charge attraction can be controlled, simply by the incorporation of molecules from biological membranes. We can tune attraction or repulsion
over the entire spectrum simply by changing the composition of the membrane. This is useful both for technological applications, and for illuminating ...
A second career for a growth factor receptor: keeping nerve axons on target
... that providing axons with a lot of options is not the way to build a brain. "Attraction is like finding the best seat in an empty movie theater, but repulsion
is like picking the lone empty seat in a full theater."
"We have shown that ephrin-A cannot transduce an intracellular signal by itself and ...
New electrostatic-based DNA microarray technique could revolutionize medical diagnostics
... disease detection can be read and evaluated without the need of elaborate chemical labeling or sophisticated instrumentation. Based on electrostatic repulsion
in which objects with the same electrical charge repel one another the technique is relatively simple and inexpensive to implement, and can be ...
MIT crafts bacteria-resistant films
... been overlooked in studies of how bacteria adhere to surfaces in favor of other traits such as surface charge, roughness, and attraction to or repulsion
from water. The new work shows that stiffness should also be taken into account, said Van Vliet.
The new films could be combined with current ...
Can certain metals repel sharks from fishing gear?
... to determine if small ingots of a relatively inexpensive electropositive alloy were repulsive to sharks under controlled laboratory conditions. If repulsion
occurs consistently in the lab, the next step would be to conduct field trials.
Brill says juvenile sandbar sharks were used in the study because ...
Crammed with charged DNA, pressure rises inside virus
... in the early on-line edition of Proceedings of the National Academy of Sciences. “First, the DNA must be forced to bend. Second, the electrostatic repulsion
of the DNA’s negatively charged backbone must be overcome. We found that the positively charged ions in the solution are critical to overcoming this ...
Attraction at the atomic level
... transporting medium.
It appears that the electrons with the strongest repulsion
in one situation are the most adept at superconductivity in another, said ... may rest instead on electrons ability to take advantage of their natural repulsion
in a complex situation.
Having developed the ability to measure with ...
Material world: Graphene's versatility promises new applications
... an essential part of this understanding.
Capacitance is a material's ability to store energy. In classical physics, capacitance is limited by the repulsion
of like electrical charges, for example, electrons. The more charge you put into a device, the more energy you have to expend to contain it, in order ...