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Solving the turbulence plasma mystery.

Cutting-edge simulations run at Lawrence Berkeley National Laboratory’s National Energy Research Scientific Computing Center (NERSC) over a two-year period are helping physicists better understand what influences the behavior of the plasma turbulence that is driven by the intense heating necessary to create fusion energy. This research has yielded exciting answers to long-standing questions about plasma heat loss that have previously stymied efforts to predict the performance of fusion reactors and could help pave the way for this alternative energy source.

The key to making fusion work is to maintain a sufficiently high temperature and density to enable the atoms in the reactor to overcome their mutual repulsion and bind to form helium. But one side effect of this process is turbulence, which can increase the rate of plasma, significantly limiting the resulting energy output. So researchers have been working to pinpoint both what causes the turbulence and how to control or possibly eliminate it.

Because are extremely complex and expensive to design and build, supercomputers have been used for more than 40 years to simulate the conditions to create better reactor designs. NERSC is a Department of Energy Office of Science User Facility that has supported fusion research since 1974.

Continue reading “Multi-scale simulations solve a plasma turbulence mystery” | >

Pretty cool.

Scientists report that amino acids, not sugar, supply most building blocks for cancerous tumor cells. Cancer cells are notorious for their ability to divide uncontrollably and generate hordes of new tumor cells. Most of the fuel consumed by these rapidly proliferating cells is glucose, a type of sugar.

Scientists had believed that most of the cell mass that makes up new cells, including cancer cells, comes from that glucose. However, MIT biologists have now found, to their surprise, that the largest source for new cell material is amino acids, which cells consume in much smaller quantities.

The findings offer a new way to look at cancer cell metabolism, a field of research that scientists hope will yield new drugs that cut off cancer cells’ ability to grow and divide.

Continue reading “How cancer cells fuel their growth” | >

U.S. Defense Secretary Ash Carter said the National Guard’s cyber squadrons will play an increasingly important role in assessing the vulnerabilities of U.S. industrial infrastructure and could be asked to join the fight against Islamic State.

The National Guard – a reserve military force that resides in the states but can be mobilized for national needs – is a key part of the military’s larger effort to set up over 120 cyber squadrons to respond to cyber attacks and prevent them.

One such unit, the 262nd squadron, is a 101-person team that includes employees of Microsoft and Alphabet’s Google. The unit is “famous throughout the country” for several high profile vulnerability assessments, Carter said at the Joint Base Lewis-McChord in Tacoma, Washington late on Friday.

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Knowledge of how DNA folds and bends could offer new perspective on how it is handled within cells while also aiding in the design of DNA-based nano-scale devices, says a biomedical engineer at Texas A&M University whose new motion-based analysis of DNA is providing an accurate representation of the molecule’s flexibility.

The model, which is shedding new light on the physical properties of DNA, was developed by Wonmuk Hwang, associate professor in the university’s Department of Biomedical Engineering, and his Ph.D. student Xiaojing Teng. Hwang uses computer simulation and theoretical analysis to study biomolecules such as DNA that carry out essential functions in the human body. His latest model, which provides a motion-based analysis of DNA is detailed in the scientific journal ACS Nano. The full article can be accessed at http://pubs.acs.org/doi/abs/10.1021/acsnano.5b06863.

In addition to housing the genetic information needed to build and maintain an organism, DNA has some incredibly interesting physical properties that make it ideal for the construction of nanodevices, Hwang notes. For example, the DNA encompassed within the nucleus of one human cell can extend to four feet when stretched out, but thanks to a number of folds, bends and twists, it remains in a space no bigger than one micron – a fraction of the width of a human hair. DNA also is capable of being programmed for self-assembly and disassembly, making it usable for building nano-mechanical devices.

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New skin for keeping you under the radar.

Because the meta-skin is stretchable, it can be pulled tight to augment the range of radar frequencies trapped by the resonators.

The project set out to prove that that electromagnetic waves — “perhaps even the shorter wavelengths of visible light” — can be adequately suppressed with flexible, tunable liquid-metal technologies. The material is made up of rows of rings, with a radius of 0.1 inches (2.5mm) and gaps of 0.04 inches (1mm). They’re filled with galinstan, a metal alloy that remains liquid at room temperatures and is less toxic than metals who share this property, such as mercury. Each resonator acts like a small curved piece of liquid wire.

The rings create electric inductors and the gaps create electric capacitors.

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Wow; Six Flags new VR Roller coaster. My nephews are going to be excited.

Samsung is “Official Technology Partner” at Six Flags Theme Parks Nationwide.

Six Flags Entertainment Corporation (NYSE: SIX), and Samsung Electronics America, Inc., today announced a broad marketing partnership which appoints Samsung as the “Official Technology Partner” of the world’s largest regional theme park company. The partnership includes the debut of ground-breaking experiences coming to nine Six Flags parks — North America’s first Virtual Reality (VR) Roller Coasters, using Samsung Gear VR powered by Oculus.

This Smart News Release features multimedia. View the full release here: http://www.businesswire.com/news/home/20160303005730/en/

Continue reading “Six Flags Entertainment : and Samsung Partner to Launch First Virtual Reality Roller Coasters in North America” | >