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Mar 5, 2018
Tesla motor designer explains Model 3’s transition to permanent magnet motor
Posted by Shailesh Prasad in categories: sustainability, transportation
Tesla made a significant change to its electric motor strategy with the introduction of the Model 3, switching from an AC induction motor to a permanent magnet motor.
Now, Tesla’s principal motor designer, Konstantinos Laskaris, explains the logic behind the move.
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Mar 5, 2018
This Strange Species That Lives Off Nuclear Energy Is Like Alien Life on Earth
Posted by Shailesh Prasad in categories: alien life, nuclear energy
When you’re trying to figure out what alien life might look like, it makes sense to be looking in the most extreme environments Earth has available.
One such place where life has been found to thrive is three kilometres (1.86 miles) beneath the ground, the home of one of the strangest lifeforms we know: the bacterium Desulforudis audaxviator.
It lives in complete dark, in groundwater up to 60 degrees Celsius (140 Fahrenheit) — an environment devoid of sunlight, oxygen or organic compounds.
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Mar 5, 2018
These muscles can lift up to 1000x their own weight
Posted by Shailesh Prasad in category: 3D printing
Mar 5, 2018
Experiment picks up light from the first stars – and it may change our understanding of dark matter
Posted by Shailesh Prasad in category: cosmology
We know this dip should be found in the radiowave part of the electromagnetic spectrum, at a wavelength of 21cm.
Challenging measurement
This was all predicted by theory. But in practice, the signal is extremely challenging to find. This is because it overlaps with many other signals in this region of the spectrum which are much stronger – such as common frequencies on the FM radio dial and radio waves from other events in our galaxy. The reason the team eventually succeeded was partly down to the experiment’s sensitive receiver and small antenna, which lets you cover a large area of the sky more easily.
Mar 5, 2018
Revolutionary Eye-drops Developed
Posted by Shailesh Prasad in categories: biotech/medical, nanotechnology
Eye-drops that can repair the corneas and can improve the short and long sightedness have been developed by a team of Ophthalmologists at Shaare Zedek Medical Center and Bar-Ilan University’s Institute of Nanotechnology and Advanced Materials. The solution of nanoparticles called the ‘nanodrops’ was successfully tested on a pig’s cornea. Clinical trials are expected to be carried out later this year. If the clinical trials on humans are successful, it is expected that the need of eyeglasses will be eliminated.
The leader of the research team, Dr. David Smadja, said that the eye-drops can bring a revolution in ophthalmological and optometry treatment of patients who are suffering from myopia, hyperopia and other refractory conditions. The revolutionary breakthrough in the field was revealed by Dr. Smadja at Shaare Zedek’s second biennial research day, which was held at Steinberg Auditorium in Jerusalem. He said that the nano drops can also be used to replace multifocal lenses and allow people to see objects from different distances. Smadja said, “This is a new concept for correcting refractory problems.” However, he didn’t mention the times of applications which will replace the need for the glasses completely.
Mar 5, 2018
Medics may slow biological time to save soldiers’ lives
Posted by Sean Brazell in categories: biotech/medical, military
Battlefield medics frequently only have a brief window of opportunity to treat an injury before it’s fatal or causes permanent disabilities, and it’s frequently so fleeting that there’s not much they can do. DARPA is exploring an unusual solution to that problem: slow the biological processes to give medics more room to breathe. Its new Biostasis research program aims to bring cell activity to a near halt by using biochemicals that control energetics at the protein level. If animals like tardigrades and wood frogs can stabilize their cells to survive freezing and dehydration, similar techniques might offer more time to medics who want to treat wounds before a victim’s vital systems break down.
DARPA knows this won’t be easy. The trick is to slow down every cellular process at roughly the same rate — you can’t just pause a few while others run at full speed. You’d also have to minimize any damage when the cells return to their normal function.
The Biostasis program is still very young (its first day for answering proposers’ questions is March 20th), and DARPA isn’t expecting too much even from complete projects: it’s initially focusing on “benchtop” proofs of concept and will focus on real-world uses as the program nears its 5-year end. If it has any success, though, the program could prove to be a breakthrough for the medical field as a whole, not just in combat. Paramedics could buy themselves enough time to get a patient to hospital, and doctors could focus less on basic survival and more on full recoveries.
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Mar 5, 2018
We Can Now Store Light as Sound, And It’s a Game Changer For Computing
Posted by Shane Hinshaw in categories: climatology, computing
Last year, scientists took a big step towards creating the next generation of computers.
For the first time ever, they stored light-based information as sound waves on a computer chip — something the researchers compared to capturing lightning as thunder.
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Mar 5, 2018
Modified, 3D-printable alloy shows promise for flexible electronics, soft robots
Posted by Saúl Morales Rodriguéz in categories: 3D printing, engineering, nanotechnology, robotics/AI
Researchers in Oregon State University’s College of Engineering have taken a key step toward the rapid manufacture of flexible computer screens and other stretchable electronic devices, including soft robots.
The advance by a team within the college’s Collaborative Robotics and Intelligent Systems Institute paves the way toward the 3D printing of tall, complicated structures with a highly conductive gallium alloy.
Researchers put nickel nanoparticles into the liquid metal, galinstan, to thicken it into a paste with a consistency suitable for additive manufacturing.
Mar 5, 2018
Researchers find algorithm for large-scale brain simulations
Posted by Saúl Morales Rodriguéz in categories: biotech/medical, information science, neuroscience, supercomputing
An international group of researchers has made a decisive step towards creating the technology to achieve simulations of brain-scale networks on future supercomputers of the exascale class. The breakthrough, published in Frontiers in Neuroinformatics, allows larger parts of the human brain to be represented, using the same amount of computer memory. Simultaneously, the new algorithm significantly speeds up brain simulations on existing supercomputers.
The human brain is an organ of incredible complexity, composed of 100 billion interconnected nerve cells. However, even with the help of the most powerful supercomputers available, it is currently impossible to simulate the exchange of neuronal signals in networks of this size.
“Since 2014, our software can simulate about one percent of the neurons in the human brain with all their connections,” says Markus Diesmann, Director at the Jülich Institute of Neuroscience and Medicine (INM-6). In order to achieve this impressive feat, the software requires the entire main memory of petascale supercomputers, such as the K computer in Kobe and JUQUEEN in Jülich.
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