Archive for March, 2010

Novelties – Replacement Bones, Grown to Order in the Lab –

Posted in Uncategorized on March 30, 2010 by nuKnuK

IF a lover breaks your heart, tissue engineers can’t fix it. But if sticks and stones break your bones, scientists may be able to grow custom-size replacements.

Gordana Vunjak-Novakovic, a professor of biomedical engineering at Columbia University, has solved one of many problems on the way to successful bone implants: how to grow new bones in the anatomical shape of the original.

Dr. Vunjak-Novakovic and her research team have created and nourished two small bones from scratch in their laboratory. The new bones, part of a joint at the back of the jaw, were created with human stem cells. The shape is based on digital images of undamaged bones.

Tissue-engineered bones have many implications, according to a leading figure in the field, Dr. Charles A. Vacanti, director of the laboratories for tissue engineering and regenerative medicine at the Brigham and Women’s Hospital in Boston. He has no connection to the Columbia work. “If your imaging equipment has sufficient high resolution, you can construct virtually any intricate shape you want — for example, the middle ear bone, creating an exact duplicate,” he said. “It’s a splendid example of tissue engineering at its best.”

via Novelties – Replacement Bones, Grown to Order in the Lab –


UC Davis News & Information :: Strange Antihyperparticle Created

Posted in Uncategorized on March 30, 2010 by nuKnuK

Physicists, including nine from UC Davis, working at the U.S. Department of Energy’s Brookhaven National Laboratory recently created some strange matter not seen since just after the Big Bang — an “antihypertriton” composed of antimatter and “strange” quarks. A paper describing the work was published online this month in the journal Science.If researchers can create and study enough of these particles, they can start to address deep problems in physics, such as why the universe is made of matter at all, said Manuel Calderon de la Barca Sanchez, associate professor of physics at UC Davis and part of the project team.A triton is the nucleus of the hydrogen isotope tritium: a proton and two neutrons. A neutron is made up of three quarks, two “down” and one “up.” In a hypertriton, one of the neutrons is replaced by a particle called a lambda hyperon, with one “up,” one “down” and one “strange” quark. A hypertriton was observed for a fleeting moment in a lab experiment about 50 years ago, Calderon said.Calderon and his colleagues detected the antihypertriton when they used Brookhaven’s Relativistic Heavy Ion Collider to slam gold atoms into each other at enormous speed. The energy released in these collisions creates new particles in a “quark-gluon plasma,” similar to that which existed microseconds after the beginning of the universe.The antihypertriton, as its name suggests, is a hypertriton in which the up, down and strange quarks are replaced with antimatter equivalents anti-up, anti-down and anti-strange quarks.

via UC Davis News & Information :: Strange Antihyperparticle Created.

This Is What Cars Might Look Like On Your Next Kindle – Kindle – Gizmodo

Posted in Uncategorized on March 27, 2010 by nuKnuK

Exactly what Amazon has in store for the next generation of Kindle is unclear. But if they stick with E-Ink, this clip of a color, video-playing E-Ink display from Kindle screen-manufacturer PVI could be sneak peek.We’ve known for a while that Amazon has a color, multitouch mega-Kindle in the works, and their recent iPad app was just a glimpse of what they might have in store.What’s unclear is what kind of displays we’ll see on this next generation of Kindles. In February, Amazon bought a multitouch LCD company called Touchco, signaling their interest in developing a device that could go head to head with the iPad and co.

via This Is What Cars Might Look Like On Your Next Kindle – Kindle – Gizmodo.

All Ice, No Man – X-47B – Gizmodo

Posted in Uncategorized on March 26, 2010 by nuKnuK

Northrop Grumman’s X-47B is getting closer to flight. The 62.1-foot wingspan unmanned aerial vehicle may populate all US Navy’s aircraft carriers by the end of the decade.

via All Ice, No Man – X-47B – Gizmodo.

This Is the Future of the Fight Against Cancer – Nanobots – Gizmodo

Posted in Uncategorized on March 24, 2010 by nuKnuK

Look close. You may be staring at the end of cancer. Those tiny black dots are nanobots delivering a lethal blow to a cancerous cell, effectively killing it. The first trial on humans have been a success, with no side-effects:

It sneaks in, evades the immune system, delivers the siRNA, and the disassembled components exit out.

Those are the words of Mark Davis, head of the research team that created the nanobot anti-cancer army at the California Institute of Technology. According to a study to be published in Nature, Davis’ team has discovered a clean, safe way to deliver RNAi sequences to cancerous cells. RNAi (Ribonucleic acid interference) is a technique that attacks specific genes in malign cells, disabling functions inside and killing them.

via This Is the Future of the Fight Against Cancer – Nanobots – Gizmodo.

DEMO: InVisage’s QuantumFilm enables gorgeous camera phone pictures | VentureBeat

Posted in Uncategorized on March 22, 2010 by nuKnuK

QuantumFilm could usher in a new age of high-quality, thin, inexpensive digital cameras and camera films.

Based on a new kind of image sensor technology from chip startup InVisage Technologies, QuantumFilm can deliver mobile phone camera images that are four times sharper than today’s cameras, with twice the dynamic range, or the ability to have both dark and light features in the same picture.

No longer will you have to put up with a bulky camera with a long lens to get good quality pictures. If the iPhone used these chips, it would be able to take 12 megapixel pictures with better quality features, compared to the 3-megapixel pictures it can currently take. With such quality, many consumers might opt for carrying only camera phones.

via DEMO: InVisage’s QuantumFilm enables gorgeous camera phone pictures | VentureBeat.

Future bio-nanotechnology will use computer chips inside living cells

Posted in Uncategorized on March 17, 2010 by nuKnuK

(Nanowerk Spotlight) Continuing miniaturization has moved the semiconductor industry well into the nano realm with leading chip manufacturers on their way to CMOS using 22nm process technology. With transistors the size of tens of nanometers, researchers have begun to explore the interface of biology and electronics by integrating nanoelectronic components and living cells. While researchers have already experimented with integrating living cells into semiconductor materials (see “Scientists integrate living brain cells into organic semiconductors”) other research is exploring the opposite way, i.e. integrating nanoelectronics into living cells.

The study of individual cells is of great importance in biomedicine. Many biological processes incur inside cells and these processes can differ from cell to cell. The development of micro- and nanoscale tools smaller than cells will help in understanding the cellular machinery at the single cell level. All kinds of mechanical, biochemical, electrochemical and thermal processes could be studied using these devices.

A typical human cell is the size of about 10 square micrometers which means that hundreds of today’s smallest transistors could fit inside a single cell. If the current rate of miniaturization continues, by 2020 approximately 2.500 transistors – equivalent to microprocessors of the first generation of personal computers – could fit into the area of a typical living cell.

via Future bio-nanotechnology will use computer chips inside living cells.