Passwords, gestures and fingerprint scans are all helpful ways to keep a thief from unlocking and using a cell phone or tablet. Cybersecurity researchers from the Georgia Institute of Technology have gone a step further. They’ve developed a new security system that continuously monitors how a user taps and swipes a mobile device.
Synthetic genetic circuitry created by researchers at Rice Univ. is helping them see, for the first time, how to regulate cell mechanisms that degrade the misfolded proteins implicated in Parkinson’s, Huntington’s and other diseases. The Rice team has designed a sophisticated circuit that signals increases in the degradation of proteins by the cell’s ubiquitin proteasome system (UPS).
The next time you feel a sneeze coming on, raise your elbow to cover up that multiphase turbulent buoyant cloud you’re about to expel. That’s right: A novel study by Massachusetts Institute of Technology researchers shows that coughs and sneezes have associated gas clouds that keep their potentially infectious droplets aloft over much greater distances than previously realized.
Navy researchers have recently demonstrated sustained flight of a radio-controlled P-51 fighter replica fueled by a new gas-to-liquid process that uses seawater as carbon feedstock. The fuel is made using an innovative and proprietary electrolytic cation exchange module that separates gases from water at 92% efficiency. Catalysis converts the gases to liquid hydrocarbons.
An examination of more than 60 years of Indiana tornado climatology data from the National Weather Service's Storm Prediction Center has shown that a majority of tornado touchdowns occurred near areas where dramatically different landscapes meet, such as where a city fades into farmland or a forest meets a plain. According to researchers, forecasters may need to pay closer attention to these "transition zones" to understand tornado risks.
Pipes, rails, and wires are typically manufactured at high speeds, which makes in-line inspection efforts difficult. This is because micro-defects take time to detect, even with machine vision technology. A new optical inspection system developed in Germany reviews the workpieces at 10 m per second, as fast as an Olympic sprinter, and finds defects in real time that can be as narrow as a single hair.
Solid-state dye-sensitized solar cells have shown their potential in achieving high efficiency with a low cost of fabrication. Degradation of these cells shortens lifespan dramatically, however, and the causes of this are not well understood. After a detailed analysis, researchers in Okinawa have determined which material in the cells was degrading, and why.
Chemists have found that cellulose, the most abundant organic polymer on Earth, can be heated in a furnace in the presence of ammonia and turned into the building blocks for supercapacitors. The new process produces nitrogen-doped, nanoporous carbon membranes, which act as the electrodes of a supercapacitor. The only byproduct is methane, which could be used immediately as a fuel or for other purposes.
Underwater sounds detected by a ship searching the southern Indian Ocean for the missing Malaysia Airlines jet are consistent with the pings from aircraft black boxes, an Australian official says Monday, dubbing it "a most promising lead" in the month-long hunt for the vanished plane.
New research from North Carolina State Univ. and UNC-Chapel Hill reveals that energy is transferred more efficiently inside of complex, 3-D organic solar cells when the donor molecules align face-on, rather than edge-on, relative to the acceptor. This finding may aid in the design and manufacture of more efficient and economically viable organic solar cell technology.
Hundreds of Tetris fans who had a little fun Saturday with a big version of the classic video game on the side of the 29-story Cira Centre in Philadelphia. LED lights embedded in the building's glass facade normally display colorful patterns. On Saturday night, images of super-sized shapes "fell" on two sides of the mirrored tower as competitors used joysticks to maneuver them, creating a spectacle against the night sky.
In 2005, NASA's Cassini spacecraft sent pictures back to Earth depicting an icy Saturnian moon spewing water vapor and ice from fractures, known as "tiger stripes," in its frozen surface. It was big news that tiny Enceladus was such an active place. Since then, scientists have hypothesized that a large reservoir of water lies beneath that icy surface, possibly fueling the plumes.
After concluding that global warming almost certainly is man-made and poses a grave threat to humanity, the U.N.-sponsored Intergovernmental Panel on Climate Change, or IPCC, is meeting next week in Berlin to chart ways in which the world can curb the greenhouse gas emissions that scientists say are overheating the planet. It is also trying to give estimates on what it would cost.
New Yale Univ.-led research suggests how and when Earth came to develop one of its most distinct features—rigid tectonic plates—and why Venus, Earth’s twin-like neighbor, never has. Earth has a unique network of shifting plates embedded in its cold and rocky outermost layer, the lithosphere. The motion of these plates drives many Earth processes, while also stabilizing the planet’s climate and enabling life.
Carbon nanotubes are reinforcing bars that make 2-D graphene much easier to handle in a new hybrid material grown by researchers at Rice Univ. The Rice laboratory of chemist James Tour set nanotubes into graphene in a way that not only mimics how steel rebar is used in concrete but also preserves and even improves the electrical and mechanical qualities of both.
At St. Paul’s Cathedral in London, a section of the dome called the Whispering Gallery makes a whisper audible from the other side of the dome as a result of the way sound waves travel around the curved surface. Researchers at Washington Univ. in St. Louis have used the same phenomenon to build an optical device that may lead to new and more powerful computers that run faster and cooler.
A combined computational and experimental study of self-assembled silver-based structures known as superlattices has revealed an unusual and unexpected behavior: arrays of gear-like molecular-scale machines that rotate in unison when pressure is applied to them.
Chances are you've heard of mapping genes to diagnose rare diseases, predict your risk of cancer and tell your ancestry. But to uncover food poisonings? The nation's disease detectives are beginning a program to try to outsmart outbreaks by routinely decoding the DNA of potentially deadly bacteria and viruses.
In a recent advance in solar energy, researchers have discovered a way to tap the sun not only as a source of power, but also to directly produce the solar energy materials that make this possible.
Researchers are working on a new algorithm that could make re-identification much easier for computers by identifying the major orientations in 3-D scenes. The same algorithm could also simplify the problem of scene understanding, one of the central challenges in computer vision research.
Inspired by human biology, a revolutionary new method of encrypting confidential information has been patented by scientists. This discovery could transform daily life which is reliant on secure electronic communications for everything from mobiles to sensor networks and the internet.
Nanostructures half the breadth of a DNA strand could improve the efficiency of light emitting diodes (LEDs), especially in the “green gap,” a portion of the spectrum where LED efficiency plunges.
A research team has developed a small electronic sensing device that can alert users wirelessly to the presence of chemical vapors in the atmosphere.
New research is focusing on enhancing poplar trees so they can break down easier and thus improving their viability as a biofuel. The long-term efforts and teamwork involved to find this solution can be described as a rare, top-down approach to engineering plants for digestibility.
Researchers have genetically engineered trees that will be easier to break down to produce paper and biofuel, a breakthrough that will mean using fewer chemicals, less energy and creating fewer environmental pollutants.