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Nanotech Gel Stops Bleeding |
posted by boadi
on Wednesday October 11, @11:07AM
from the if-you-prick-me-i-do-not-bleed dept.
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Researchers have come up with a gel which uses nanofibers to help seal wounds and stop bleeding. It has worked fabulously in animal tests and if it works for humans it's hoped that it will make surgery much easier and save many lives.
From the NewScientist Tech article (via Slashdot):
Molecular biologist Shuguang Zhang, at the Massachusetts Institute of Technology in the US, began experimenting with peptides in 1991. Zhang and colleagues at MIT and the University of Hong Kong in China went on to design several materials that self-assemble into novel nano-structures, including a molecular scaffold that helps the regrowth of severed nerve cells in hamsters (see Nano-scaffolds could help rebuild sight).
Their work exploits the way certain peptide sequences can be made to self-assemble into mesh-like sheets of "nanofibres" when immersed in salt solutions.
In the course of that research they discovered one material's dramatic ability to stop bleeding in the brain and began testing it on a variety of other organs and tissues. When applied to a wound, the peptides form a gel that seals over the wound, without causing harm to any nearby cells.
Just in time for haloween. Now I can do some for-real gashes, and just spackle it up later. =)... that'll spook the neighbors' kids.
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Evolving AI Game Hits Linux |
posted by boadi
on Wednesday October 11, @07:56AM
from the virtual-geeks dept.
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NERO, a game in which players duel it out with their adaptive AI bots, has hit Linux. This is significant because... Well maybe it isn't. But lots of geeks, me included, use Linux... and they're probably interested in the development of this sort of good AI.
From the NERO Homepage:
Neuro-Evolving Robotic Operatives, or NERO for short, is a unique computer game that lets you play with adapting intelligent agents hands-on. Evolve your own robot army by tuning their artificial brains for challenging tasks, then pit them against your friends' teams in online competitions!
NERO is an active research project run almost entirely by students. It uses the real-time NeuroEvolution of Augmenting Topologies (rtNEAT) algorithm created by Ken Stanley during his PhD work at UT Austin. The NERO project is a collaboration of the Department of Computer Sciences and the Digital Media Collaboratory at the University of Texas at Austin.
In the past there had been talk of starting open source AI tournaments for FreeCiv. But I don't think that ever panned out.
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posted by boadi
on Wednesday October 11, @05:50AM
from the oh-what-a-tangled-web-we-weave dept.
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Weaponized anthrax gotcha down? Well just mix some simple sugars with some nanotubes and you can create a sort of net that attracts and traps anthrax spores, making them too big to inhale.
From
the ScienceDaily article
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“For anthrax to be effective, it has to be made into a fine powder that can easily enter the lungs when inhaled. That is what makes it lethal,” said Sun. “What we have done is come up with an agent that clings to the anthrax spores to make their inhalation into the lungs difficult.”
Anthrax spores are covered with carbohydrates, or simple sugars, that are used to communicate with or attract other biological species. The Clemson team used carbon nanotubes as a platform or scaffolding for displaying sugar molecules that would attract the anthrax spores. Carbon nanotubes are hollow tubes made of carbon atoms. Typically one-hundred thousandth the thickness of a single human hair, nanotubes are formed from intensely heated carbon. When sugar coated, the carbon nanotubes bind with the anthrax spores, creating clusters that are too large to be inhaled –– stopping their infection and destruction.
See! Nanotech isn't all just grey goo and super viruses. =)
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posted by boadi
on Wednesday October 11, @03:42AM
from the a-riddle-immerse-in-an-enigma dept.
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Rik Riel of Second Life hosted an in-world debate of Immersion vs Augmentation. He has the full log of the chat posted at his blog. Though billed as a debate, it's more of a discussion about how far Immersion has come, and where it still fails. They discuss economics, roleplay, and whether voicechat would ruin the illusion for stutterers and the like.
From the Click Heard Round the World:
Is SL a separate reality from the physical world, or is it "merely" an extension of the real world? Are residents the same people that they are in real life, or are do they take on new identities in SL, akin to playing a character in a play? What effect does the reality (or unreality) of SL have on the relationships between residents?
Stay tuned for more breaking Immersionist news. =)
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posted by boadi
on Tuesday October 10, @05:11AM
from the short-term-fears dept.
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Ellen Frankel in her book Beyond Measure says that heightism is the last prejudice. She fears that eugenic forces are driving the average height up.
From the Deseret News article:
A determined tall person is often admired, Frankel points out, but "a determined short person is often said to have a 'Napoleon complex."'
It's no surprise, then, that parents of short children are tempted to get their doctors to prescribe synthetic human growth hormones, even for children who are not hormone deficient. In other words, Frankel says, the drugs are being prescribed for healthy children who happen to be short.
The same scenario was discussed in an earlier SLdot story. I do wonder where an arms race for taller people will end up... if it will effect people's long term health, and if it will tax natural resources.
Sorry... that's it for today, slow news day so far.
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FDA Not Prepared for Nanotech |
posted by boadi
on Monday October 09, @05:11AM
from the itty-bitty-bananas dept.
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A former Food and Drug Administration (FDA) official has released a report criticizing the FDA for not being ready for nano-scale products. The article suggests it may lead to a public meeting on the subject.
From NutraIngredients USA article:
The report reveals regulatory weaknesses affecting new products, such as certain dietary supplements and cosmetics, using the technology. Critics say questions over nanotechnology safety have not been answered and the FDA is not in a position to effectively police it.
“Unless the FDA addresses potential nanotechnology risks now, public confidence in a host of valuable nanotechnology-based products could be undermined," wrote Taylor, who was deputy commissioner for policy at the Food and Drug Administration from 1991 to 1994 and currently conducts research on policy, resource, and institutional issues affecting public health agencies.
Could clumsy first steps slow the spread of nanotech, just as it slowed nuclear power?
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Nanoscientist Declares Utopia/Dystopia Unlikely |
posted by boadi
on Monday October 09, @04:25AM
from the ssdd dept.
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The podcast This Week In Science has given an interview with nano-scientist Alexandra Navrotsky of the University of California at Davis. She takes a skeptic's tone and talks about how she thinks that desktop nanofactories and the 'grey goo scenario' are unlikely, because self replicating is a much more difficult problem than many anticipate. She mentions that the grey goo idea is not a new one, and is much the same as Kurt Vonnegut's 'ice nine'.
The This Week In Science Podcast summary (mp3):
A Silence So Deafening, Dont Worry - Think Faster, Bacon???, Lucy and Baby Have Identity Issues, Doggy Liver Devastation, Spinach Safety, Goats Milk To Spider Silk, Quick TWIS Bytes, and Interview w/ Dr. Alexandra Navrotsky on nanotechnology
The interview is about 30 minutes long and it's in the second half of the podcast.
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Second Life Shutdown Over 'Grey Goo' |
posted by boadi
on Monday October 09, @03:18AM
from the second-death dept.
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The virtual world of Second Life continues to be plagued by "grey goo attacks." A in-world "virus" has appeared again. An object has been created that continues to replicate itself until the whole server-grid fails.
The parent company, Linden Labs, has had to shut down the world overnight to investigate the object. They are now reporting that it is a bug with the intellectual property system, and they report that they are fixing it.
Coverage at SLog, SL Insider, and official coverage at Linden Labs. Previous attack coverage here, with fallout coverage here.
Is this just a protocol working out it's kinks, or a sign of instability to come in more 'open' virtual worlds?
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Gene Therapy Returns Sight in Dogs |
posted by boadi
on Monday October 09, @03:00AM
from the scooby-does dept.
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A genetic condition causing blindness has been cured in animal trials by a French research team. The research suggests that the therapy has to occur early in the life of the dogs. The article comes with a video of the dogs navigating a course and avoiding obstacles.
From a ZDnet blog:
A team of French researchers has used a new genetic therapy to give back the sense of vision to several blind dogs affected by a rare genetic condition known as Leber's Congenital Amaurosis. This genetic condition, which affects between 1,000 and 2,000 children in France alone, leads to blindness shortly after birth. In this Inserm news release (PDF format, in French), you'll discover how the scientists managed to restore sight for 7 of the 8 dogs they've treated. Now, they envision clinical trials on humans, but not before several years.
Hopefully in another decade it will be just one more disease of the past.
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Shimon Peres Backs Nano-Defense for Israel |
posted by boadi
on Thursday October 05, @09:52AM
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Israeli Vice Premier Shimon Peres has made a statement that the future of warfare and defense will be nanotech. Is this a indication of where the Israeli military's research dollars are going?
From the Y Net News article:
"The missiles threatening Israel and the terrorists threatening to hurt the people of Israel should be handled using weapons that will be developed by the technology of the future, nano-technology. This is my lesson from the war, and I'm operating today, as I always have, with a vision in a bid to change the realities of the Middle East," Peres said.
I wonder what specific technologies he's talking about.
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Looking...
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I'd love some submissions. Especially stories focusing on social and political aspects of online games other than Second Life... such as WoW, There, Eve, or FakeCity.
I'd also love an editor who can find stories on this, or other topics regularly. If you'd like to be a part of my little SLdot project, please submit inquiries to boadirigaud@gmail.com.
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Deleonometer
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