Most Recently Added Most commentedBy Title | A-Z

Battery-free short-range wireless communication between devices

Device harvests and reflects energy from ambient TV and cellular transmissions
August 14, 2013

Researchers demonstrate how one payment card can transfer funds to another card by leveraging the existing wireless signals around them. Ambient RF signals are both the power source and the communication medium.

University of Washington engineers have created a new “ambient backscatter” wireless communication scheme that allows two devices to communicate with each other by reflecting ambient TV and cellular transmissions — batteries not required.

The researchers built small, battery-free devices with antennas that can detect, harness and reflect one of the ambient radio-frequency (RF) signals, which then is picked up by other similar devices.

“Recent work… read more

Bacterial evolution offers clues to tradeoffs in financial investments

August 14, 2013

BacteriaExeterIstainCompetingPopulation

Scientists have found that bacteria have the potential to teach valuable investment lessons.

The research, published in the journal Ecology Letters, takes advantage of the fact that bacteria, like humans, have limited resources and are constantly faced with investment decisions.

Bacteria though are successful with their investments and have colonized every inch of the surface of our planet.

The researchers, from the Universities of Exeterread more

A ‘molecular flashlight’ that illuminates brain tumors in mice

August 14, 2013

illuminates mouse medulloblastoma (credit: Sarah J. Moore et al./PNAS)

In a breakthrough that could have wide-ranging applications in molecular medicine, Stanford University researchers have created a bioengineered peptide that enables imaging of medulloblastomas, among the most devastating of malignant childhood brain tumors, in lab mice.

The researchers altered the amino acid sequence of a cystine knot peptide — or knottin — derived from the seeds of the squirting cucumber, a plant native to Europe, North Africa… read more

Scientists watch live brain-cell circuits fire

Promising new tool for mapping brain-cell activity
August 14, 2013

arclight-a

A new class of genetically engineered proteins called ArcLight can be used to watch electrical activity in individual brain cells in live brains, Yale University scientists have demonstrated.

These proteins may be a promising new tool for mapping brain-cell activity and for studying how neurological disorders disrupt normal neuron signaling.  Understanding brain cell activity is a high priority of the Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative.

ArcLight… read more

Glowing green rabbits demonstrate effectiveness of genetic manipulation

August 14, 2013

green_glowing_rabbits

Using an active transgenesis technique founded by medical researchers at the University of Hawaiʻi Mānoa, scientists in Turkey have produced glowing green rabbits when exposed to ultraviolet light.

The glowing effect is the result of a fluorescent protein from jellyfish DNA, which was injected into the mother rabbit’s embryo in the lab.

The altered embryos were re-inserted into the mother rabbit, and when the litter… read more

New process allows for creation of complex silicon nanostructures

Salt absorbs heat to prevent collapse
August 14, 2013

This silicon nanostructure was created using a new process developed at Oregon State University (credit: Oregon State University)

Chemists at Oregon State University have identified a compound that could significantly reduce the cost and potentially enable mass commercial production of silicon nanostructures — materials that have huge potential in everything from electronics to biomedicine and energy storage: sodium chloride (table salt).

By melting and absorbing heat at a critical moment during a “magnesiothermic reaction” (one using magnesium at an elevated temperature), the… read more

When will a computer pass the Turing Test?

An interview with Eric Schmidt, Executive Chairman, Google
August 14, 2013

Schmidt

“Many people in AI believe that we’re close to [a computer passing the Turing Test] within the next five years,” said Eric Schmidt, Executive Chairman, Google, speaking at The Aspen Institute on July 16, 2013.

In a wide-ranging interview by writer/biographer Walter Isaacson, president and CEO of the Aspen Institute, Schmidt covered topics ranging from future user interfaces (“the next UI is AI”) to phone-based medical… read more

Musk reveals Hyperloop concept

August 13, 2013

Hyperloop passenger transport

Elon Musk has published a blog post detailing the Hyperloop concept; a solar-powered, elevated transit system that could take passengers and cars from Los Angeles to San Francisco in 30 minutes.

Here are the core designs. Bloomberg has further details.

Fukushima plant spilling 300 tons of radioactive water every day into the sea since 2011

August 13, 2013

Mass contamination from major radiation exposure events, such as the meltdown at Japan’s Fukushima Daiichi nuclear power plant, require prompt treatment in the form of a pill, such as the treatment being developed at Berkeley Lab (credit: satellite image from Digital Globe)

Workers at the crippled Fukushima nuclear plant have told the Australian Broadcasting Company (ABC) that contaminated water has most likely been seeping into the sea since the disaster two-and-a-half years ago.

They do not have much faith in Tokyo Electric Power Company’s (TEPCO) ability to handle the situation and they claim another accident is inevitable.

Japan’s nuclear watchdog has described the leaks as a “state of… read more

Nanowires that glow under mechanical pressure

Could be used for collecting signatures and fingerprints, in biological imaging and micro-electromechanical (MEMS) systems, and ultimately for new human-machine interfaces
August 13, 2013

glowing nanowires

Georgia Institute of Technology researchers have developed a sensor device using nanowires that glow under mechanical pressure.

The sensor device could provide an artificial sense of touch, offering sensitivity comparable to that of the human skin. It could be used for collecting signatures and fingerprints and in biological imaging and micro-electromechanical (MEMS) systems. Ultimately, it could provide a new approach for human-machine interfaces.

“You… read more

New tools to manage information overload threatening neuroscience

August 13, 2013

The recent explosion of neuroscience research has resulted in the publication of nearly 2 million papers — more data than any researcher can read and absorb in a lifetime.
That’s why a UCLA team has invented research maps. Easily accessible through an online app, the maps help neuroscientists quickly scan what is already known and plan their next study.The Aug. 8 edition of the journal Neurondescribes these new… read more

New Medtronic deep brain stimulation system is first to sense and record brain activity while delivering therapy

August 12, 2013

Activa-PC-+-S_Hero_web

Medtronic, Inc. has announced a new deep-brain-stimulation (DBS) system called Activa PC+S that enables sensing and recording select brain activity, at various times selected by a physician, while simultaneously providing targeted DBS therapy.

Previous Medtronic systems were limited to stimulation.

“The new system will allow for new research that could one day significantly change the way people with devastating neurological and psychological disorders, such as Parkinson’s disease, essential… read more

Meshnet activists rebuilding the Internet from scratch

August 12, 2013

(Credit: Foobaz/Wikimedia Commons)

Fed up with government spying, some people have decided to take matters into their own hands, and are building a user-owned Internet from scratch, using meshnets, New Scientist reports.

These wireless networks are intended to permit secure communication without surveillance or any centralized organization, and ultimately, if their designers get their way, they will span the country.

Each node in the mesh, consisting of a radio transceiver… read more

How cancer chromosome abnormalities form in living cells

August 12, 2013

Chromosome translocation

National Cancer Institute (NCI) scientists have directly observed events that lead to the formation of a chromosome abnormality that is often found in cancer cells.

The abnormality, called a translocation, occurs when part of a chromosome breaks off and becomes attached to another chromosome.

Chromosomes are thread-like structures inside cells that carry genes and function in heredity. Human chromosomes each contain a… read more

Email services close and destroy data rather than reveal files

August 11, 2013

1984-Big-Brother

Lavabit, a Texas-based service that was reportedly used by Edward J. Snowden, announced the suspension of its service Thursday afternoon to avoid being “complicit in crimes against the American people,” The New York Times reports.

Within hours, a fast-growing Maryland-based start-up called Silent Circle also closed its e-mail service and destroyed its e-mail servers.

In effect, both businesses destroyed their assets — in part or in… read more

close and return to Home