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Alan Turing's Chemistry Hypothesis Turned Into a Desalination Filter (arstechnica.com)
An anonymous reader quotes a report from Ars Technica: Alan Turing is rightly famed for his contributions to computer science. But one of his key concepts -- an autonomous system that can generate complex behavior from a few simple rules -- also has applications in unexpected places, like animal behavior. One area where Turing himself applied the concept is in chemistry, and he published a paper describing how a single chemical reaction could create complex patterns like stripes if certain conditions are met. It took us decades to figure out how to actually implement Turing's ideas about chemistry, but we've managed to create a number of reactions that display the behaviors he described. And now, a team of Chinese researchers has figured out how to use them to make something practical: a highly efficient desalination membrane.
To make this a true Turing-style system, the researchers dissolved a large molecule in water. This had the effect of making the water more viscous, which slowed the diffusion of the activator. In addition, the molecule was chosen so that the activator would stick to it, slowing things down even further. The end result was a system similar to the ones defined over a half-century ago. Imaging of the features show that rather than simply thickening the membrane, the membrane retained the same width in these areas; instead, it bulged out to form the structures. That's critical, as the amount of surface area exposed to a salt solution should influence how much water gets through the membrane. In fact, the researchers confirmed that more water was purified when the new membranes were used (the version with the stripes outperformed the dotted one). Unfortunately, the researchers don't compare this system to commercially available membranes. The report has been published in the journal Science.
To make this a true Turing-style system, the researchers dissolved a large molecule in water. This had the effect of making the water more viscous, which slowed the diffusion of the activator. In addition, the molecule was chosen so that the activator would stick to it, slowing things down even further. The end result was a system similar to the ones defined over a half-century ago. Imaging of the features show that rather than simply thickening the membrane, the membrane retained the same width in these areas; instead, it bulged out to form the structures. That's critical, as the amount of surface area exposed to a salt solution should influence how much water gets through the membrane. In fact, the researchers confirmed that more water was purified when the new membranes were used (the version with the stripes outperformed the dotted one). Unfortunately, the researchers don't compare this system to commercially available membranes. The report has been published in the journal Science.
...for imprisoning Trump for the eventual conviction for treason?
As my wife tells me often (she is Asian)..
Roses are red
violets are blue
there's always an Asian better than you.
Daily reminder: Hillary was using an illegal server in the bathroom of their home to send official State Department communications beyond the reach of law and regulation so that they could not be seen by citizens.
When subpoenaed, she instructed staff to destroy laptops, hard drives, and phones in the basement of their house using hammers. The FBI was never given access, and we do not know the contents or purpose of over 30,000 destroyed emails.
https://www.snopes.com/fact-check/hillary-clinton-smash-phone-hammer/
He sucked dick AND pure water!
the researchers dissolved a large molecule in water
Just one? Was this a study of homeopathy?
Hey, I wonder if someone who actually understood what they were reading could redo this summary so humans can interpret it? Maybe somebody with a tiny bit of technical background, who knows even generally what these guys are up to. That would be nice.
I am a geek attorney, but not your geek attorney unless you've already retained me. This is not legal advice.
But these genius scientists still can't figure out why Building 7 collapsed on 9-11. LOL
ae911truth dot org
"...how a single chemical reaction could create complex patterns like stripes if certain conditions are met."
This describes a random number generator: a single seed, from which a long string of seed-like numbers are generated by an algorithm. With the right type of algorithm, stripes are created in the pattern of output, because certain RNG algorithms are flawed in the way they create patterns.
Think of the RNG as a chain of chemical reactions starting from a single chemical reaction.
As in the effect of brownian motion, seeds are generated by the RNG all over the pattern's n-dimensional space in a seemingly random fashion, but in fact, holes are created in the resulting pattern, from which stripes emerge.
As the owner/operator of a RO water maker on a cruising yacht, it would be nice if we could actually see some new tech come from all these advances. Now I barely take notice because all they say is blah blah blah and yet we never see any new water makers that use any new tech. They all require 800 psi, expensive high pressure pumps, and expensive membranes. Save the world and improve water makers already!
Quite a few years ago I wrote an article about Turing's Reaction-Diffusion system on Dr.Dobbs Journal.
it is still available online for anyone interested:
http://www.drdobbs.com/cpp/algorithm-alley/184410024?queryText=Rafael%2BCollantes
http://www.drdobbs.com/windows/letters/184410223
claiming the Chinese stole this from good ole merkins.
Doctor Flamond: Do you realize what that could mean to the starving nations of the earth?
Nick: Wow. They'd have enough salt to last forever.
WARNING: Smartphones have side effects--most of them undocumented.
They get no rejection of monovalents. This is a nanofilter.
But the fluxes are crazy high.