The turbine-like device, that are simple whirling rotors, developed by the doctors does not beat like a heart, rather provides a ‘continuous flow’ like a garden hose.
Craig Lewis was a 55-year-old, dying from amyloidosis, which causes a build-up of abnormal proteins. The proteins clog the organs so much that they stop working, according to NPR.
But after the operation, with the ‘machine’ as his heart’s replacement, Lewis’ blood continued to spin and move through his body.
However, when doctors put a stethoscope to his chest, no heartbeat or pulse can be heard (only a ‘humming’ sound)—which “by all criteria that we conventionally use to analyze patients”, Doctor Cohn said, he is dead.
This is proof that “human physiology can be supported without a pulse”.
The researchers detected more indicators of cell repair and inflammation in the post-workout samples than in the pre-workout samples. That didn’t surprise them because scientists know that exercise activates genes associated with repair and inflammation. What did shock them were the clear differences between the massaged legs and the unmassaged ones after exercise. The massaged legs had 30% more PGC-1alpha, a gene that helps muscle cells build mitochondria, the “engines” that turn a cell’s food into energy. They also had three times less NFkB, which turns on genes associated with inflammation.
The results, published online today in Science Translational Medicine, suggest that massage suppresses the inflammation that follows exercise while promoting faster healing. “Basically, you can have your cake and eat it too,” Tarnopolsky says. He adds that the study found no evidence to support often-repeated claims that massage removes lactic acid, a byproduct of exertion long blamed for muscle soreness, or waste products from tired muscles.
Germany’s renewable energy industry has turned to drones to solve a skills shortfall, says Lissone. With nearly 22,000 wind turbines in the country, he says energy firms do not have enough skilled people who can climb them to perform close visual inspections of the turbine blades, which can become delaminated after lightning strikes, for instance. So small UAVs, such as those made by Microdrones of Siegen, east of Cologne, are doing the job instead.
Across the border, France’s TGV trains travel from Paris to Lyon at 320 kilometres per hour – a super-high speed that can upset the pebble bed supporting the rails. To find the dents that need to be flattened out, a helicopter drone travels alongside the track and films it with 3D stereoscopic cameras. It is easy to spot serious undulations that need attention by watching the footage.
After a nerve is severed it is important to reconnect the two ends as quickly as possible, because the disconnected section withers away after a few days of isolation. The usual technique is to stitch the loose ends together – but the body’s own repair system can stand in the way of a successful mend.
Earlier studies by George Bittner of the University of Texas at Austin and his team revealed where the fault lies: it’s with the tiny spheres called vesicles that the body creates in the nerve stumps.
“Normally, the vesicles would repair each of the two cut ends,” says Bittner. But if they do so before the two ends can be brought back into contact, the vesicles simply seal the two stumps off, making it difficult to create a connection between them later on.
If calcium is excluded from the injury site, though, the vesicles don’t form and the body’s self-repair process is aborted. This leaves the damaged nerve ends unsealed and in a better state for surgical reattachment.
So in the first step of Bittner’s new procedure, he injects the injury site with a calcium-free salty solution to prevent the self-repair mechanism from kicking in. “It becomes a calcium-free zone,” he says.
In step two, he pulls the two jagged nerve ends to within a micrometre of each other and squirts a polymer called polyethylene glycol (PEG) between them. It removes water from the outer, fatty membrane of each nerve stump, allowing the fats in the membranes to merge together again and reconnect the two nerve ends – the starting point for proper healing.
In the final step, Bittner restarts the natural healing process by immersing the injury site in a calcium-rich salty solution. That triggers the body to begin producing vesicles again, which repair any remaining gaps in the nerve.
Biologists who released lizards on several uninhabited islands in the Bahamas have been able to observe an evolutionary effect in action.
The lenses, made with nano-scale engineering processes,work as a hi-tech focusing device, which allows Innovega’s glasses to be considerably less bulky than previous devices.
The lenses themselves require no power, and thus can sit safely on the eyeball.
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