Washington, D.C. — Superconductivity is a rare physical state in which matter is able to conduct electricity—maintain a flow of electrons—without any resistance. This phenomenon can only be found in certain materials at low temperatures, or can be induced under chemical and high external pressure conditions. (more…)
— Scientists use special kind of atomic force microscopy at low temperatures and in ultrahigh vacuum to image the charge distribution within a single molecule
— The new technique will further the understanding of nanoscale physics and could help develop future applications such as solar photoconversion, energy storage, or molecular scale computing devices
ZURICH – 27 Feb 2012: IBM scientists were able to measure for the first time how charge is distributed within a single molecule. This breakthrough will enable fundamental scientific insights into single-molecule switching and bond formation between atoms and molecules. The ability to image the charge distribution within functional molecular structures holds great promise for future applications such as solar photoconversion, energy storage, or molecular scale computing devices. (more…)
PASADENA, Calif. — Astronomers using data from NASA’s Spitzer Space Telescope have, for the first time, discovered buckyballs in a solid form in space. Prior to this discovery, the microscopic carbon spheres had been found only in gas form in the cosmos. (more…)
*Berkeley Lab Researchers Identify Structure of Key Control Element Behind Protein Misfolding That Can Lead to Disease*
The gold standard for nanotechnology is nature’s own proteins. These biomolecular nanomachines – macromolecules forged from peptide chains of amino acids – are able to fold themselves into a dazzling multitude of shapes and forms that enable them to carry out an equally dazzling multitude of functions fundamental to life. As important as protein folding is to virtually all biological systems, the mechanisms behind this process have remained a mystery. The fog, however, is being lifted.
A team of researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab), using the exceptionally bright and powerful x-ray beams of the Advanced Light Source, have determined the crystal structure of a critical control element within chaperonin, the protein complex responsible for the correct folding of other proteins. The incorrect or “misfolding” of proteins has been linked to many diseases, including Alzheimer’s, Parkinson’s and some forms of cancer. (more…)
ANN ARBOR, Mich.— The fastest wind ever discovered blowing off a disk around a stellar-mass black hole has been observed by a team of astronomers that includes a University of Michigan doctoral student.
Using NASA’s Chandra X-ray Observatory, an orbiting telescope, they clocked the record-breaking super wind at about 20 million mph, or about 3 percent of the speed of light. This is nearly 10 times faster than astronomers had previously observed from a stellar-mass black hole. (more…)
*The hotter it gets, the smaller the animal?*
When Sifrhippus sandae, the earliest known horse, first appeared in the forests of North America more than 50 million years ago, it would not have been mistaken for a Clydesdale.
It weighed in at around 12 pounds–and it was destined to get much smaller over the ensuing millennia.
Sifrhippus lived during the Paleocene-Eocene Thermal Maximum (PETM), a 175,000-year interval of time some 56 million years ago in which average global temperatures rose by about 10 degrees Fahrenheit. (more…)
*How Bob Vince changed the world*
Where does it begin, the act of becoming a scientist? Perhaps with a bowling ball, its finger holes packed with explosives, which when detonated, launch the ball into the air, cracking the otherwise pristine concrete walkway of your childhood home in four places, much to the consternation of your father. Or maybe with an explosion of homemade rocket fuel in your basement chemistry lab that scares your mother half to death. And all this before the troublesome teen years.
Bob Vince can’t be sure where his becoming a scientist began. But where it led changed the world. (more…)
ANN ARBOR, Mich.— Pregnant female geladas show an unusually high rate of miscarriage the day after the dominant male in their group is replaced by a new male, a new University of Michigan study indicates.
The “Bruce effect” – in which pregnant females spontaneously miscarry after being exposed to an unfamiliar male – has been found repeatedly in laboratory rodents. However, no conclusive evidence for this effect had ever been demonstrated in a wild population prior to this study. Geladas are Old World monkeys that are close relatives of baboons. (more…)
