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Protein structure determined in living cells

March 9, 2009

An international team of scientists has determined the structure of a protein in its natural environment, the living cell, using nuclear magnetic resonance (NMR) spectroscopy.

The method links signals from living cells to specific proteins that have been labeled with the stable nitrogen isotope N-15. But since the cells survive for only 5 to 6 hours without supply of oxygen and nutrients, the scientists used computational reconstruction of the… read more

Eye Repair

October 10, 2007
Credit: Fraunhofer Institute

A novel artificial cornea that adheres to eye cells could bring new hope to the estimated 10 million people worldwide who are blind because of corneal damage or disease.

The key to the new implant is a protein-coated polymer developed by researchers at the Fraunhofer Institute, in Munich, Germany. The polymer, which is commercially available, repels water, so it won’t absorb tear-duct secretions that could cause it… read more

Augmented Reality: Another (Virtual) Brick in the Wall

February 16, 2005

Augmented Reality (AR) — a broad class of user interface techniques intended to enhance a person’s perception of the world around them with computer generated information — aims to enhance the analog world.

Users, via wearable display screens, see the non-virtual world around them with digital information superimposed into their surroundings.

Programs are also being developed that can make smart assumptions about what users want to do next.… read more

Streaming CES: How We Did It

January 10, 2011

TechCrunch TV has revealed how it managed to provide more than 20 hours of live CES video coverage, using backpack systems instead of a satellite truck with or special expensive (and fixed-location) video fiber circuit.

“We used a LiveU mobile package provided by our live streaming partner, Ustream. The livepack fits in a custom designed backpack. It takes a firewire input containing video and audio from a… read more

New Ideas in the War on Bioterrorism

October 10, 2001

Ideas for better technology to detect, diagnose and treat biological agents are currently being pursued in the nation’s newest medical battle -— the war against bioterrorism.
There are dozens of pathogens that might conceivably be used in an attack, including some unnatural ones made by genetic engineering, and it would be impractical to develop vaccines for all of them. So the new battle will be fought with the tools of… read more

Atomic construction yields punchier power store

March 16, 2009

Devices from electric cars to laptops could benefit from a new kind of battery-capacitor using 10 billion tiny capacitors, each just 50 nanometers across, per square centimeter.

A single kilogram could deliver one megawatt of power and store 2500 joules.

Scientists able to zoom in and out as the brain processes sound

Mouse research could lead to better treatments for hearing loss
August 18, 2014

A two-photon microscopy image showing a calcium sensor (green), the nuclei of neurons (red) and supporting cells called astrocytes (magenta). (Credit: John Issa/Johns Hopkins Medicine)

Researchers at Johns Hopkins have mapped a new technique for watching auditory processing in the brains of mice as brain cells lit up when the mice listened to tones and one another’s calls.

The results, which represent a step toward better understanding how our own brains process language, appear online July 31 in the journal Neuron.

In the past, researchers often studied sound processing… read more

New mathematical model predicts more virulent microbes

October 18, 2007

As effective population size increases and as immunodeficiency increases due to the spread of HIV infection and an aging population, there will be more virulent organisms, predicts a new mathematical model devised by NYU professor Martin J. Blaser, a microbiologist renowned for his study of H. pylori and a mathematician, and Denise Kirschner of the University of Michigan.

As even larger societies developed, more virulent organisms, such as measles,… read more

Alternate Reality Video Games Blur Many Lines

March 1, 2005

“Alternate-reality gaming” — an obsession-inspiring genre that blends real-life treasure hunting, interactive storytelling, coded web sites, video games and online community — may, incidentally, be one of the most powerful guerrilla marketing mechanisms ever invented.

MathWorld online encyclopedia returns

November 7, 2001

MathWorld, a free, online encyclopedia of mathematics, returned to the Web today, after legal wrangling with CRC Press. MathWorld is a comprehensive, interactive math encyclopedia intended for students, educators, math enthusiasts, and researchers.

Jacket Lets You Feel the Movies

March 20, 2009

Philips Electronics researchers have developed a jacket they have lined with vibration motors to study the effects of touch on a movie viewer’s emotional responses to what the characters are experiencing.

The jacket contains 64 independently controlled actuators controlled by microprocessors.

‘Butterfly’ molecule could lead to new sensors, photoenergy conversion devices

September 2, 2014

A phosphorescent molecular “butterfly” that can generate dual (white) emission upon<br />
photoexcitation (credit: M. Han et al./Angewandte Chemie)

A novel molecule that can take your temperature, emit white light, and convert photon energy directly to mechanical motions has been enhanced by Florida State University researchers.

Biwu Ma, associate professor in the Department of Chemical and Biomedical Engineering in the FAMU-FSU College of Engineering, created the molecular structure resembling a butterfly in a lab about a decade ago, but has… read more

Powerful Molecular Motor Permits Speedy Assembly of Viruses

October 30, 2007

A team of physicists has shown that a tiny viral motor generates twice as much power, relative to its size, as an automobile engine. The finding explains why even very large viruses can self-assemble so rapidly.

The researchers say that their work could ultimately lead to better ways of designing antiviral medications. Drugs that target the DNA-packaging process could block the infection cycle by preventing viral assembly.

Such… read more

Damaged DNA may lead to anti-cancer drugs and therapies

March 15, 2005

Johns Hopkins chemists have discovered a new way to sabotage DNA’s ability to reproduce, a finding that could eventually lead to the development of more targeted anti-cancer drugs and therapies.

They created a synthetic, double-stranded DNA with special chemical characteristics and exposed it to long wavelength light that selectively switches on the DNA damage process.

The synthetic DNA is very similar to that which is produced when cells… read more

IBM: New transistor to boost chip speed

December 3, 2001

IBM will describe a new type of Double Gate transistor this week that it says will vastly increase the performance and reduce the power consumption of chips in the coming decade.
Double Gate transistors improve on existing designs, according to IBM, because they effectively double the electrical current that can be sent through a given transistor, or, alternatively, lower the amount of electricity running through a given gate for better… read more

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