Recently Added Most commented

‘Switched on’ muscle stem cells morph to resemble nerve cells

April 15, 2004

Researchers have turned muscle progenitor cells — stem cells that are “committed” to becoming muscle tissue — into cells that look and act like neurons.

Using an artificial gene they created, the researchers “switched on” a panel of genes that are normally silent in the muscle cells, causing them to morph into cells that show biochemical, physiological, and structural properties of neurons.

The researchers say the advance provides… read more

Switching device enables ultrafast quantum Internet

March 23, 2011

Researchers have developed a new switching device that can route quantum bits at very high speeds along a shared network of fiber-optic cable without losing the embedded entanglement information, says Prem Kumar, AT&T Professor of Information Technology at Northwestern University.

The researchers used pairs of polarization-entangled photons emitted into standard telecom-grade fiber. One photon of the pair was transmitted through the all-optical switch. Using single-photon detectors,… read more

Switching off Aging in Stem Cells

September 7, 2006

A single molecular switch plays a central role in inducing stem cells in the brain, pancreas, and blood to lose function as they age, Howard Hughes Medical Institute researchers have found.

Genetically engineered mice deficient in the p16INK4a gene show considerably reduced aging-related decline in stem cell function and tissue regeneration.

Source: Howard Hughes Medical Institute news release

Switching your universe to toy with the laws of physics

July 11, 2012

quantum_conundrum_3

The many-worlds interpretation of quantum mechanics loosely suggests there are an infinite number of universes existing alongside our own, in which anything can and will happen.

In the puzzle game Quantum Conundrum, you play the 12-year-old nephew of Professor Fitz Quadwrangle, a scientist who had invented a way to shift between these universes before becoming trapped in one after an experiment went awry.

It… read more

Symantec Unveils Automated Norton AntiVirus

August 14, 2002

Symantec announced Norton AntiVirus 2003, due September 1, which it says will automatically protect a PC from evolving threats such as advanced e-mail worms and infected instant messaging attachments. Using advanced heuristics–a type of artificial intelligence–the Worm Blocking technology actually watches for programs that act like a worm.

Synapse chip taps into brain chemistry

March 26, 2003

Stanford University researchers have developed “artificial synapses” on a silicon chip.

When an electric field is applied, the neurotransmitter is pumped through an internal pipeline, and a little of it squeezes out of the hole, stimulating nearby neural cells.

This could open the way to neural prosthetic implants that combine chemical and electrical stimulation in one implant. These could interact with cells in more subtle and precise ways.… read more

Synaptic Behavior Captured By New Memristor Circuit Design

August 24, 2010

Synapse

Farnood Merrikh-Bayat and Saeed Bagheri at Sharif University of Technology have connected memristors (memory resistors) together in a way that mimics the wiring of human brains, reproducing Hebbian-type synapse strengthening.

Ref: arxiv.org/abs/1008.3450: Bottleneck Of Using Single Memristor As A Synapse And Its Solution

Synaptic electronic circuits that learn and forget like neural processes

December 27, 2012

nanoionic device

Rui Yang, Kazuya Terabe and colleagues at the National Institute for Materials Science (NIMS), and the International Center for Materials Nanoarchitectonics (MANA) in Japan and at the California NanoSystems Institute/UCLA have developednanoionic” (processes connected with fast ion transport in all-solid-state nanoscale systems) devices capable of a broad range of neuromorphic and electrical functions.

Background

Such a device would allow for fabrication of on-demand configurable circuits,… read more

Synchronising ‘heartbeat’ saves sensor batteries

July 8, 2008

IBM’s TJ Watson Labs has developed a “heartbeat” design for sensor networks that allows the sensors’ batteries to last four times as long: nodes only turn on when the beat reaches them, saving battery power.

Synchronized brain waves enable rapid learning

Why brain-wave resonance may be the key to learning, not synapses
June 17, 2014

MIT neuroscientists found that brain waves originating from the striatum (red) and from the prefrontal cortex (blue) become synchronized when an animal learns to categorize different patterns of dots (credit: Jose-Luis Olivares/MIT)

MIT neuroscientists have found that as monkeys learn to categorize different patterns of dots, two brain areas involved in learning — the prefrontal cortex and the striatum — synchronize their brain waves to form new communication circuits.

“We’re seeing direct evidence for the interactions between these two systems during learning, which hasn’t been seen before,” says Earl Miller, the Picower Professor of Neuroscience at… read more

Synchronized oscillators may allow for computing that works like the brain

May 15, 2014

oscillating_switch

Computing is currently based on binary (Boolean) logic, but a new type of computing architecture created by electrical engineers at Penn State stores information in the frequencies and phases of periodic signals and could work more like the human brain.

It would use a fraction of the energy necessary for today’s computers, according to the engineers.

To achieve the new architecture, they used a thin film… read more

Synthesizing collagen for drug design and disease treatments

Program defines stable sequences for synthesis, could help fight disease, design drugs
October 16, 2012

A program developed at Rice University details stable forms of collagen proteins for synthesis in the lab. The ability to synthesize custom collagen could lead to better drug design and treatment of disease. The colored portion of the molecule in this illustration shows positively charged lysine and negatively charged aspartate interacting in the required axial geometry that stabilizes the triple helix. (Credit: Hartgerink Lab/Rice University)

In a development that could lead to better drug design and new treatments for disease, Rice University researchers have made a major step toward synthesizing custom collagen, the fibrous protein that binds cells together into organs and tissues.

Jeffrey Hartgerink, an associate professor of chemistry and of bioengineering, and his former graduate student Jorge Fallas, now a postdoctoral researcher at the University… read more

Synthespians more prevalent in future films

August 19, 2001

Newly developed computer tools are allowing filmmakers to add synthespians (virtual actors) into the action. New technology for digitally modeling hair, cloth, skin and muscles will make digital humans even more prevalent and indistinguishable from the flesh-and-blood kind over the next year.

Synthetic and biological nanoparticles combined to produce new metamaterials

January 9, 2013

Two different protein cages, cowpea chlorotic mottle virus (blue) and Pyrococcus furiosus ferritin (red), can be used to guide the assembly of binary nanoparticles superlattices through tunable electrostatic interactions with charged gold nanoparticles (yellow). (Credit: Aalto University)

Aalto University scientists have organized synthetic and biological building blocks in a single structure — combining virus particles (and other protein cages) with inorganic nanoparticles to form crystalline layer structures, or superlattices.

The research aims to develop hierarchically structured nanomaterials with tunable optical, magnetic, electronic and catalytic properties. Such nanomaterials are important for applications in sensing, optics, electronics and drug delivery.

By generating biohybrid 3D superlattices of nanoparticles and proteins,… read more

Synthetic biologists reject controversial guidelines

May 24, 2006

Researchers in the new field of synthetic biology have pledged to develop better tools to identify anyone trying to order the DNA needed to make deadly pathogens. But at the Synthetic Biology 2.0 meeting in Berkeley, California, they decided against adopting a controversial code of conduct intended to prevent their technologies being used to make new bioweapons.

close and return to Home