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Nanowire splicing to make ultra-small circuits

July 1, 2005

Northwestern University researchers have created nanowires containing gaps just a few nanometres wide along its length. The gaps are so minute that individual molecules can be dropped in, converting the wire into simple, incredibly small, electronic circuitry.

The Ultimate Running Machine

July 11, 2002

Inside a Soviet-style training camp, corporate scientists are reengineering neuro-mechanics, blood chemistry, and brain waves. Welcome to the Oregon Project, where Nike is rebuilding the US marathon team one high tech step at a time.

New memory material may hold data for one billion years

May 21, 2009

A new experimental computer memory device that can store 1 terabyte per square inch (allowing for storing thousands of times more data than conventional silicon chips) with an estimated lifetime of more than one billion years has been developed by Alex Zettl of UC Berkeley and colleagues.

The device consists of an iron nanoparticle enclosed in a hollow carbon nanotube. The nanoparticle can be shuttled back and forth with… read more

Intel Quits Effort to Get Computers to Children

January 7, 2008

A partnership between Intel and the One Laptop Per Child educational computing group has dissolved in a conflict between Intel’s $350 Classmate PC and One Laptop’s $200 XO computer.

Nano valve can trap and release molecules

July 18, 2005

UCLA chemists have created the first nano valve that can be opened and closed at will to trap and release molecules. It can be used as a drug delivery system.

It consists of moving parts — switchable rotaxane molecules that resemble linear motors attached to a tiny piece of glass (porous silica), which measures about 500 nanometers. Tiny pores in the glass are only a few nanometers in size.… read more

Radiation is everywhere, but how to rate harm?

April 5, 2011

Experts differ on risks from the low radiation doses resulting from Japanese nuclear reactors.

Dr. John Boice, a professor of medicine at Vanderbilt University, argues that there is little data on doses below about 10 rem (100 millisieverts), while Dr. David Brenner, director of the Center for Radiological Research at Columbiaread more

Quantum net for atom angling

July 31, 2002

Researchers at University of Texas at Austin are able to extract an exact number of atoms from a Bose-Einstein condensates (BEC) — clouds of atoms that behave as though they were a single super-atom — using a quantum dot. Manipulating BECs is important in developing quantum computers.

Kids with ADHD need to fidget, study says

May 27, 2009

Fidgeting helps kids with Attention-Deficit Hyperactivity Disorder focus by moving to maintain alertness, a University of Central Florida study has found.

Study leader Dr. Mark Rapport suspects they are “under-aroused” — that their brains do not produce enough dopamine to keep them alert during normal day-to-day activities — so the kids move around to jiggle or wake their brains and bodies up.

Brain-controlled computer switches on in a heartbeat

January 10, 2008

Graz University of Technology scientists have developed a more effective on-switch for a brain-computer interface: voluntary spikes in the user’s heart rate.

DNA Nanoparticles Deliver Genes Intravenously

August 2, 2005

Louis Pasteur University researchers have developed a new method of getting anticancer genes into cells: a novel detergent molecule that interacts with individual DNA molecules to form a nanoparticle 32 nanometers in diameter.

These nanoparticles, which are unusual in that they have no charge on their surface, are stable in blood, yet fall apart when exposed to a negatively-charged molecule found only inside cells. This molecule, phosphatidylserine, causes the… read more

Biologists create self-replicating RNA molecule

April 11, 2011

Biologists at the MRC Laboratory of Molecular Biology in Cambridge, UK, have synthesized an RNA enzyme that functions like a self-replicator.

The RNA enzyme tC19Z can reliably copy RNA sequences up to 95 letters long. This is a near-sevenfold increase over the R18 molecule, the only other known RNA-copying molecule. R18 can only copy RNA segments up to 14 letters long, and only works on certain sequences.

The tC19Z… read more

Bot Battle More of a Lovefest

August 21, 2002

The International Design Contest robot competition at MIT nvolved eight teams of students from seven countries to make a remote-controlled bot that can push hockey pucks and foam rubber balls across the shuffleboard-sized playing area and onto a scale at the end of the field.

Endless original, copyright-free music

June 2, 2009

Inmamusys, an AI program that can create and play music in real time that evokes emotional responses, has been developed by University of Granada researchers.

Graphene quantum dot may solve some quantum computing problems

January 16, 2008

Researchers at the Solid State Physics Laboratory in Zurich have proposed a method to use a tunable graphene quantum dot to create qubits (quantum bits).

A graphene-based qubit could solve some of the problems found in using gallium arsenide quantum dots in spin-based quantum computers.

Researchers discover new tumor defense system

August 10, 2005

Researchers have discovered that tumors release fatty acids that inhibit cytotoxic T lymphocytes’ ability to kill tumor cells by by blocking a number of the lymphocytes’ signaling events.

So strategies that reduce the amount of fatty acids surrounding the tumors may give a boost to anti-cancer therapeutics.

These results from the Torrey Pines Institute for Molecular Studies raise the possibilities of new therapeutic targets for cancer, such as… read more

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