A team of researchers with Lawrence Berkeley National Laboratory has demonstrated a micro-sized robotic torsional muscle/motor made from vanadium dioxide that for its size is a thousand times more powerful than a human muscle. It is able to catapult objects 50 times heavier than itself over a distance five times its length within just 60 milliseconds
Researchers at The City College of New York have...
It's hard to study individual molecules in a gas...
In 2007 and 2008, two research papers reported in...
G protein-coupled receptors (GPCR) are a highly diverse group of membrane proteins that mediate cellular communication and are thought to be prominent drug targets. A group of researchers from Arizona State Univ. are part of a larger team reports that they have been successful in imaging at room temperature the structure of GPCR with the use of an x-ray free-electron laser.
Researchers from the Max Planck Institute for Intelligent Systems in Stuttgart have developed a new method for the active degradation of organic pollutants in solution by using swimming microengines. These tiny “engines” are made from platinum and iron and are highly efficient in removing organic pollutants from water using hydrogen peroxide.
An international research team has produced a high-quality genome sequence of a Neanderthal woman from a toe bone found in 2010 by Russian archaeologists. The genome will allow detailed insights into the relationships and population history of the Neanderthals and other extinct hominin groups.
Researchers in Switzerland studying a natural wetland near a decommissioned uranium mine in Limousin, France, have shown that under certain circumstances the uranium present in the wetland could be more mobile than previously believed.
Ultra-short laser pulses provide a fast and precise way of processing a wide range of materials without excessive heat input. Scientists from Bosch, TRUMPF, Jena Univ. and Fraunhofer Institute in Germany have turned the ultra-short pulse laser into an effective series-production tool. This type of laser can remove, or ablate, tiny areas measuring just a few nanometers.
For millions of homes, plants, wood and other types of “biomass” serve as an essential source of fuel, especially in developing countries, but their mercury content has raised flags among environmentalists and researchers. Scientists are now reporting that among dozens of sources of biomass, processed pellets burned under realistic conditions in China emit relatively low levels of the potentially harmful substance.
In the quest to shrink motors so they can maneuver in tiny spaces like inside and between human cells, scientists have taken inspiration from millions of years of plant evolution and incorporated, for the first time, corkscrew structures from plants into a new kind of helical “microswimmer.” The low-cost development, which appears in ACS’ journal Nano Letters, could be used on a large scale in targeted drug delivery and other applications.
New collaborative work from computational biologists in Massachusetts and California combines computational and experimental approaches to identify biologically meaningful RNA folds. The work could open the door to a better understanding of RNA machinery, which includes the ribosome, microRNAs and riboswitches, and long noncoding RNAs whose diverse functions are only beginning to be understood.
Astronomers are still largely working with a “flat” map of the galaxy, and the European Space Agency hopes to change that with Gaia, its star-surveying satellite which launched into space Thursday. The spacecraft will produce the most accurate 3-D map of the Milky Way yet. Gaia is now heading for a stable orbit on the opposite side of the Earth from the sun, and will always keep its back to the sun.
After successfully text messaging “O Canada” using evaporated vodka, two researchers in Canada and their UK-based counterpart say their simple system can be used where conventional wireless technology fails. The chemical signal, using the alcohol found in vodka, was sent 4 m across the lab with the aid of a tabletop fan.
A group of researchers at Carnegie Mellon Univ. is banking on the efficiency of an environmentally friendly alternative to large hydroelectric operations. Known as hydrokinetic or run-of-the-river power extraction, the new method harvests a small portion of kinetic energy in the river at multiple locations. They are building multi-scale hierarchical models for analyzing large-scale river networks, hydropower project placement, and control.
Astronomers affiliated with the Supernova Legacy Survey (SNLS) have discovered two of the brightest and most distant supernovae ever recorded, 10 billion light-years away and a hundred times more luminous than a normal supernova. These newly discovered supernovae are especially puzzling because the mechanism that powers most of them cannot explain their extreme luminosity.
Univ. of Minnesota researchers have discovered a first-of-its-kind series of compounds possessing anti-human immunodeficiency virus (HIV) activity. The compounds present a new target for potential HIV drug development and future treatment options. The compounds were found to stop the replication and spread of HIV by blocking HIV DNA synthesis.
Metabolism was lost in the shadows of cancer research for decades but has recently been reclaiming some of the spotlight. Now, Mina Bissell, distinguished scientist with Lawrence Berkeley National Laboratory’s Life Sciences Div. and a leading authority on breast cancer, has shown that aerobic glycolysis is not the consequence of the cancerous activity of malignant cells but is itself a cancerous event.
Virulent, drug-resistant forms of E. coli that have recently spread around the world emerged from a single strain of the bacteria. The strain causes millions of urinary, kidney and bloodstream infections a year. It could have a far greater clinical and economic impact than any other strain of bacteria, including the so-called MRSA superbug.