Submitted by: Odio @ 11:52 AM | Monday, June 20, 2016 | (url: http://futurism.c...)
Scientists may have found a way for humans to avoid age-related brain illnesses by regenerating memory through neural stem cells.
Research findings showed that it may actually be possible to replace aging brain cells and restore memory through a new technique that involves taking donor neural stem cells and grafting them into an aged brain.
Lead scientist Ashok K. Shetty and his team implanted neural stem cell into the hippocampus a part of the brain that makes new memories and connects them to emotions of an animal model to enable them to regenerate tissue.
We chose the hippocampus because its so important in learning, memory and mood function, Shetty said. Were interested in understanding aging in the brain, especially in the hippocampus, which seems particularly vulnerable to age-related changes.
For this latest research, the team found that the neural stem cells engrafted well onto the hippocampus in the young animal models (which was expected) as well as the older ones that would be, in human terms, about 70 years old. Not only did these implanted cells survive, they divided several times to make new cells.
Scientists say the fact that an aged hippocampus can accept grafted neural stem cells as good as the young hippocampus does means there is hope in treating age-related neurodegenerative disorders.
They are still producing new neurons at least three months after implantation, and these neurons are capable of migrating to different parts of the brain, the team notes.
If this research proves successful, it could have a significant effect on ways to rejuvenate the aged brain to combat the impact of aging. But, as is true of most scientific experiments on the human body, coming up with conclusive results might take a while, and even then, FDA approval is often a decade long process. Still, there is new hope.
Submitted by: Odio @ 05:19 AM | Wednesday, June 15, 2016 | (url: http://futurism.c...)
In just three days, an Artificial intelligence has solved one of biologys biggest mysteries independently- how a sliced up flatworm can regenerate into new organisms.
A group of computer scientists from the University of Maryland programmed a computer to randomly predict how a worms genes formed a regulatory network capable of regeneration, which experts would evaluate afterwards through simulation.
Researcher Michael Levin said that solving how flatworms regenerate, through AI, is not just statistics or number-crunching.
The invention of models to explain what nature is doing is the most creative thing scientists do. This is the heart and soul of the scientific enterprise. None of us could have come up with this model; we (as a field) have failed to do so after over a century of effort, he said.
It is important to note, however, that even if the computer only took three days to create the worm model, it took the scientists several years to put together the program.
Researchers are opening up the use of the worm model to create other scientific models and theories in different areas, including cancer research. But, they said, in order to transfer the computers abilities to other areas, massive databases of scientific experiments would need to be prepared in order to have enough raw material for discoveries to be made.
The study by Daniel Lobo and Michael Levin, Inferring Regulatory Networks from Experimental Morphological Phenotypes, was published on Thursday (4 June) in the journal PLOS.
Submitted by: Odio @ 08:14 AM | Friday, January 29, 2016 | (url: http://phys.org/n...)
Taking inspiration from trees, scientists have developed a battery made from a sliver of wood coated with tin that shows promise for becoming a tiny, long-lasting, efficient and environmentally friendly energy source. Their report on the device1,000 times thinner than a sheet of paperappears in the journal Nano Letters.
But don't try it at home yet the components in the battery tested by scientists at the University of Maryland are a thousand times thinner than a piece of paper. Using sodium instead of lithium, as many rechargeable batteries do, makes the battery environmentally benign. Sodium doesn't store energy as efficiently as lithium, so you won't see this battery in your cell phoneinstead, its low cost and common materials would make it ideal to store huge amounts of energy at once such as solar energy at a power plant.
Existing batteries are often created on stiff bases, which are too brittle to withstand the swelling and shrinking that happens as electrons are stored in and used up from the battery. Liangbing Hu, Teng Li and their team found that wood fibers are supple enough to let their sodium-ion battery last more than 400 charging cycles, which puts it among the longest lasting nanobatteries.
Lead author Hongli Zhu and other team members noticed that after charging and discharging the battery hundreds of times, the wood ended up wrinkled but intact. Computer models showed that that the wrinkles effectively relax the stress in the battery during charging and recharging, so that the battery can survive many cycles.
"Pushing sodium ions through tin anodes often weaken the tin's connection to its base material," said Li, an associate professor of mechanical engineering. "But the wood fibers are soft enough to serve as a mechanical buffer, and thus can accommodate tin's changes. This is the key to our long-lasting sodium-ion batteries."
Submitted by: elemeno @ 03:21 PM | Monday, August 11, 2008 | (url: http://www.telegr...)
In recent years, several teams around the world have shown with mathematics how a cloaking device could work in principle, by making light waves flow around an object - just as water in a river flows undisturbed around a smooth rock.
In principle, their invisibility cloak could be realised with artificial materials called "metamaterials," composite materials not found in nature, which could hide a person, or guide light around an ugly tower block which blocks a view.
Submitted by: Shadow(of)Death @ 12:30 AM | Sunday, June 15, 2008 | (url: http://news.yahoo...)
SAINT PETERSBURG (AFP) - In the world's largest country, tiny objects measured in billionths of a metre are the future of the economy -- or so the government claims.
Scientists across Russia are setting their minds to new inventions to net some of the billions of state dollars being poured into the field of nanotechnology. But they remain sceptical after years of neglect by the government.
Thermal cameras to detect breast cancer, sensors for spotting pipeline leaks and special coatings to prolong the life of industrial equipment were among the nano-devices on display at a business forum in Saint Petersburg this month.
Submitted by: Das Capitolin @ 01:37 AM | Sunday, May 11, 2008 | (url: http://benchmarkr...)
These are uncertain financial times we live in today, and the rise and fall of our economy has had direct affect on consumer spending. It has already been one full year now that DDR3 has been patiently waiting for the enthusiast community to give it proper consideration, yet it's success is still undermined by misconceptions and high price. Benchmark Reviews has been testing DDR3 more actively than anyone, which is why over fifteen different kits fill our System Memory section of reviews. Sadly, it might take an article like this to open the eyes of my fellow hardware enthusiast and overclocker, because it seems like DDR3 is the technology nobody wants bad enough to learn about. Pity, because overclocking is what it's all about.
Submitted by: jamesjimmy @ 02:22 PM | Thursday, April 24, 2008 | (url: http://bittdaily....)
Apparently the Hubble telescope has captured pictures of two galaxies colliding. The Hubble site is calling this Galaxies Gone Wild! Though the lack of beer, guys with cameras and half naked drunk people makes me question the validity of that claim. Either way the pictures that Hubble snapped are very cool.
Submitted by: [57th]cneal @ 10:34 PM | Monday, February 11, 2008 | (url: http://www.news.c...)
Billions of protesters around the world gather at Scientology landmarks to voice their concerns on the so called church.
Submitted by: DudeofDeath @ 04:57 PM | Monday, February 12, 2007 | (url: http://abcnews.go...)
"Quantum Computing." It's one of those things that bring a sparkle to the eyes of propellerheads and make the rest of us just scratch our heads.
But it's been a holy grail in the arcane world of supercomputers and a Canadian firm claims it will be unveiling one on Tuesday. Nevermind that most engineers thought quantum computers were decades away...