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Targeting tumors using silver nanoparticles

June 18, 2014

Prostate cancer cells were targeted by two separate silver nanoparticles (red and green), while the cell nucleus was labeled in blueusing Hoescht dye (credit: UCSB)

Scientists at UC Santa Barbara have designed a silver spherical nanoparticle encased in a shell coated with a peptide that enables it to target tumor cells.

The shell is etchable so those nanoparticles that don’t hit their target can be broken down and eliminated. The research findings appear in the journal Nature Materials.

The core of the nanoparticle employs a phenomenon called plasmonics. In plasmonics, nanostructured… read more

Taser’s latest police weapon: the tiny camera and the cloud

February 22, 2012

AXON flex (credit: TASER International)

TASER International has announced new kind of camera called AXON flex, to be worn by police officers.

The half-ounce unit is about the size of a cigar stub and clips on to a collar or sunglasses of an officer. It can record two hours of video during a shift. The information is transferred by a docking station to a local machine, and eventually stored… read more

Task force to Study Societal Implications of Nanotech

August 16, 2005

The Center for Responsible Nanotechnology (CRN) has announced the charter members of a new Task Force to develop comprehensive policy recommendations for safe and responsible use of molecular manufacturing.

“Progress toward developing the technical requirements for desktop molecular manufacturing is moving faster than it was when we founded CRN two years ago,” said Mike Treder, Executive Director of CRN.

“The recent announcement of a Technology Roadmap for Productive… read more

Tasmanian tiger DNA ‘lives’ again

May 20, 2008

University of Melbourne researchers have shown that a DNA fragment taken from Tasmanian tiger samples (the thylacine, extinct for 70 years) can be added to mouse embryos, where the DNA functioned normally in making collagen.

This is the first time that genetic material from an extinct animal has functioned inside a living host. Other researchers have resurrected extinct DNA inside cell lines in the lab.

This work isn’t… read more

Tata Motors unveils the $2,500 ‘People’s Car’

January 11, 2008

Indian company Tata Motors has unveiled a tiny vehicle that is also affordable, safe, and fuel-efficient: “the People’s Car,” aka “Nano.”

The Nano, which can get up to 54 mpg and seat four people, will go on sale for $2,500 (1-lakh) in India later this year.

Tattoo biosensor warns when athletes are about to ‘hit the wall’

July 25, 2013


University of California San Diego neuroengineers have developed a real-time electrochemical biosensor that can alert marathoners, competitive bikers, and other “extreme” athletes that they’re about to “bonk,” or “hit the wall.”

The sensor can be applied to the human skin like a temporary tattoo that stays on and flexes with body movements.

In ACS’ journal Analytical Chemistry, Joseph Wang and colleagues describe the first… read more

Tattoo tracks sodium and glucose via an iPhone

July 25, 2011

Phone Sensor

Northeastern University researchers have developed a nanosensor “tattoo” with a modified iPhone that allows users to closely monitor sodium levels (to prevent dehydration), and glucose levels.

The team injected a solution containing nanoparticles into the skin. This left no visible mark, but the nanoparticles fluoresced when exposed to a target molecule, such as sodium or glucose. A modified iPhone (with three LEDs in a case) tracked changes in the level of… read more

Tea trumps coffee for non-cardivascular mortality

September 2, 2014


Drinking tea is associated with 24% reduced non-cardiovascular mortality, reveals a study of 131,000 people presented at the European Society of Cardiology (ESC) Congress by Professor Nicolas Danchin from France.

The study included 131,401 people aged 18 to 95 years who had a health check up at the Paris IPC Preventive Medicine Center between January 2001 and December 2008. During a mean 3–5 years follow-up,… read more

Teachers envisage the science textbooks of the future

June 12, 2006

Computer simulations, inquiry-based learning, programs that use Web-linked embedded illustrations, and other online techniques are replacing printed textbooks.

Teaching a microbe to make fuel

August 22, 2012

Micrograph shows a group of Ralstonia eutropha bacteria in culture. In their natural form, as seen here, the microbes convert carbon in their surrounding into a kind of bioplastic — seen as the light-colored dots inside their membranes. But a biologically engineered version developed at MIT instead produces isobutanol fuel, which is then expelled from the cells into the surrounding medium, where it can easily be collected.<br />
Image courtesy of Christopher Brigham

The soil bacterium Ralstonia eutropha has a natural tendency, whenever it is stressed, to stop growing and put all its energy into making complex carbon compounds.

Now scientists at MIT have tinkered with its genes to persuade it to make fuel — specifically, a kind of alcohol called isobutanol that can be directly substituted for, or blended with, gasoline.

Christopher Brigham, a research scientist in MIT’s biology department, explains… read more

Teaching Bacteria to Behave

October 2, 2008

Single-celled organisms could be “trained” through associative learning to deliver drugs by employing molecular circuits to build stronger associations between stimuli applied simultaneously, according to a multidisciplinary team from Germany, Holland, and the United Kingdom.

Research on genetically engineering remote-controlled bacteria to release drugs is already under way.

Teaching computers to read minds

August 30, 2007

Microsoft researchers are developing a mass-market EEG system with a small number of electrodes affixed to a person’s head.

It will communicate wirelessly with software on a PC, in hopes of turning electrodes into meaningful input devices for computers.

Teaching Computers to Read No Simple Task

January 30, 2005

Two Rensselaer Polytechnic Institute professors who are trying to build a machine that can learn by reading basic texts, like algebra and astronomy, in three years.

Funding by a DARPA grant, they hope to create a machine that can read sections of textbooks and answer questions based on the material. They believe that in the future, such AI machines might be able to take in all the relevant cultural,… read more

Teaching computers to recognize objects better

September 23, 2013


Object-recognition software (which tries to identify objects in digital images) is still fairly limited.

So, in an attempt to improve it, researchers at MIT’s Computer Science and Artificial Intelligence Laboratory have created a system that, in effect, allows humans to see the world the way an object-recognition system does.

The system takes an ordinary image, translates it into the mathematical representation used… read more

Teaching Computers to Work in Unison

July 15, 2003

This month, grid computing moved further toward the commercial mainstream when the Globus Project released new software tools that blend the grid standards with a programming technology called Web services, developed mainly in corporate labs, for automated computer-to-computer communications.

Enthusiasm for grid computing is also broadening among scientists. A report this year by a National Science Foundation panel, “Revolutionizing Science and Engineering Through Cyberinfrastructure,” called for new financing of… read more

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