The researchers used a technique called "mass defect filtering," which can detect related compounds all at once. That's because related compounds have almost equal numbers to the right of the decimal point in their molecular masses.
The researchers tested their technique on 32 herbal products with names like "Mr. Nice Guy" and "Hot Hawaiian." They found that every product contained one or more synthetic cannabinoid; all told, they identified nine different compounds in them — two illegal ones and seven that are not regulated.
The news story appears in Chemical & Engineering News and the original paper is (behind a paywall) in Analytical Chemistry.
The tattoo is either cool or creepy depending on your attitude toward such things as tattoos and cyborg implants. But human cyborg technology is nothing new. Indeed, Nokia's vibrating magnetic tattoos are part of a broader trend in technology. No longer content to carry gadgets, there's a movement toward getting the conveniences of smartphones and other electronic devices embedded right in your body."
The database only contains 625,000 entries, how many better ways are there to store this same amount of data?
In a test carried out by IBTimes UK, we found that the Galaxy S3 cannot distinguish between a photograph and a real person, leading us to suggest users should select a more secure way of locking the phone, such as with a PIN or password.
With a speed of 10,000 pieces per 24 hours it can solve large puzzles. Not only that but the type of jigsaw it solves is more difficult than the usual in that the pieces are square and can be placed in any orientation. It is so good it can even solve problems consisting of a number of mixed up puzzles without being told how many or their dimensions.
Of course as well as having fun beating humans at another recreational pastime the technique could be used to unscramble shredded documents as per the recent Darpa challenge.