sVfYc.jpg (1215×1600) DNS Changer Check-Up - Clean. 4625252_460s_v1.jpg (460×819) Glucose deprivation activates feedback loop that kills cancer cells, UCLA study shows. By Jennifer MarcusJune 26, 2012Category: Health Sciences, Research Feedback loop that kills cancer Compared to normal cells, cancer cells have a prodigious appetite for glucose, the result of a shift in cell metabolism known as aerobic glycolysis or the "Warburg effect.
" Researchers focusing on this effect as a possible target for cancer therapies have examined how biochemical signals present in cancer cells regulate the altered metabolic state. Now, in a unique study, a UCLA research team led by Thomas Graeber, a professor of molecular and medical pharmacology, has investigated the reverse aspect: how the metabolism of glucose affects the biochemical signals present in cancer cells. "Most strikingly, our discovery that glucose withdrawal causes both cell death and increased tyrosine phosphorylation is intriguing because increased tyrosine kinase signaling is normally associated with cell growth," said Nicholas A. New technique lights up the creation of holograms. Researchers at the RIKEN Advanced Science Institute (Japan) have developed a unique way to create full-color holograms with the aid of surface plasmons.
A red apple with green leaves—it seems real enough to pick up in one’s hand, but there is nothing there to actually touch. This is because the apple is a hologram, a three-dimensional image projected by light (Fig. 1). In April 2011, Chief Scientist Satoshi Kawata of RIKEN, the head of the Nanophotonics Laboratory at the Advanced Science Institute in Wako, along with his colleague Miyu Ozaki, a visiting scientist of RIKEN, succeeded in developing a novel holography principle distinct from conventional methods which makes it possible to reconstruct a full-color three-dimensional object.
The key to their success resided in superposing a thin silver film on which surface plasmons—collective oscillations of free electrons within a metal—were excited. Physicists 'record' magnetic breakthrough. An international team of scientists has demonstrated a revolutionary new way of magnetic recording which will allow information to be processed hundreds of times faster than by current hard drive technology.
The researchers found they could record information using only heat - a previously unimaginable scenario. They believe this discovery will not only make future magnetic recording devices faster, but more energy-efficient too. The results of the research, which was led by the University of York's Department of Physics, are reported in the February edition of Nature Communications. York physicist Thomas Ostler said: "Instead of using a magnetic field to record information on a magnetic medium, we harnessed much stronger internal forces and recorded information using only heat. 6 Real People With Mind-Blowing Mutant Superpowers. If the insane, explosive popularity if superhero movies is any indication, we are fascinated by people who are insanely better than us at any given thing.
Probably because, in real life, we're all such a bunch of incompetent boobs that we've been enslaved by blue paint, flashing lights and crying French babies. But it turns out, superpowers are real. And not just the secret ones that everyone has, or even the ones everyone thinks they have -- this Cracked Classic is about a group of people that, in a sane world, would already have multi-colored leather jumpsuits, delightfully mismatched personality traits and a skyscraper shaped like whatever they decide to call themselves. We've all dreamed of having superpowers at some point (today), but the majority of us have to accept the sobering reality that preternatural abilities simply aren't possible. For instance ... #6. As with most superpower discoveries, Xiangang found his by acting like a braying jackass. So What's Going on Here? lKZPp.png (802×440) String Theorists Squeeze Nine Dimensions Into Three.
A simulation of the early universe using string theory may explain why space has three observable spatial dimensions instead of nine.
The leading mathematical explanation of physics goes beyond modern particle theory by positing tiny bits of vibrating string as the fundamental basis of matter and forces. String theory also requires that the universe have six or more spatial dimensions in addition to the ones observed in everyday life. Explaining how those extra dimensions are hidden is a central challenge for string theorists. “This new paper demonstrates, for the first time, that our 3-D space appears naturally … from the 9-D space that string theory originally has,” says Jun Nishimura of the High Energy Accelerator Research Organization in Tsukuba, Japan.
He and his colleagues will publish their findings in an upcoming issue of Physical Review Letters. In the simulation, the universe starts off as a tiny blob of strings that is symmetric in nine different dimensions.
General Knowledge.