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|WASHINGTON Cheap Men's Adidas Yeezy 350 Boost V2 Sesame Shoes Khaki , Sept. 14 (Xinhua) -- Scientists have created miniature robots out of DNA that can autonomously "walk" around a surface, pick up certain molecules and drop them off in designated locations, a new study published Thursday in the U.S. journal Science said.
"Just like electromechanical robots are sent off to faraway places, like Mars, we would like to send molecular robots to minuscule places where humans can't go, such as the bloodstream," said LuLu Qian Cheap Men's Adidas Originals EQT Racer 2.0 Shoes Core Black , assistant professor of bioengineering of the California Institute of Technology.
Such technology could one day be used for a wide range of applications, including synthesizing therapeutic chemicals in an artificial molecular factory, delivering drugs in bloodstreams or cells, or sorting molecular components in trash for recycling, Qian said.
To create a DNA robot, Qian's team constructed three basic building blocks, including a "leg" with two "feet" for walking Cheap Adidas Stan Smith Leather Shoes All White , an "arm" and "hand" for picking up cargo, and a segment that can recognize a specific drop-off point and signal to the hand to release its cargo.
Each of these components is made of just a few nucleotides within a single strand of DNA.
In principle, these modular building blocks could be assembled in many different ways to complete different tasks.
For example, a DNA robot with several hands and arms, could be used to carry multiple molecules simultaneously.
In the work described in the Science paper, the Qian group built a robot that could explore a molecular surface, pick up two different molecules and then distribute them to two distinct regions on the surface.
"The DNA robot moves around on a 58-nanometer-by-58-nanometer pegboard on which the pegs are made of single strands of DNA complementary to the robot's leg and foot Cheap Women's Adidas Originals Superstar 80s Shoes Core Black ," Qian's team said in a statement.
"The robot binds to a peg with its leg and one of its feet -- the other foot floats freely," the team said.
"When random molecular fluctuations cause this free foot to encounter a nearby peg, it pulls the robot to the new peg and its other foot is freed. This process continues with the robot moving in a random direction at each step."
Since one step for the little guy takes five minutes, and allows it to move six nanometers, it may take a day for the robot to explore the entire board, the team said.
"Along the way, as the robot encounters cargo molecules tethered to pegs Cheap Adidas Originals Superstar 80s Metal Toe Shoes Gold Foil , it grabs them with its 'hand' components and carries them around until it detects the signal of the drop-off point," it said.
"The process is slow, but it allows for a very simple robot design that utilizes very little chemical energy."
In a summary on the robot, the Science magazine called Qian's work "one small step for a DNA robot, one giant leap for mankind.
"The future is here," the summary wrote.
" Chinese boxer Zou Shiming, front Cheap Women's Adidas Superstar Supercolor Pack Shoes Light Pink , poses during the weigh-in for Champions of Gold boxing event in Macao in this 18 July 2014 file photo. [PhotoIC]
Already the biggest name in boxing that the rest of the world has never heard of, China's Zou Shiming on Sunday could transform himself into the wild card that makes or breaks the richest event in sports history: a bout worth $1 billion.
Yup, you read it right－one billion Yankee greenbacks.
For that scenario to become reality, Zou (5-0, 1 KO) first has to defeat Thailand's No 1-ranked Kwanpichit Onesongchaigym (27-0-2, 12 KOs) in their International Boxing Federation flyweight title eliminator, with the winner guaranteed a shot at world champion Amnat Ruenroeng in 2015.
If Zou beats Onesongchaigym and World Boxing Organization welterweight champ Manny Pacquiao (56-5-2 Cheap Adidas Superstar Mesh Shoes Triple Black , 38 KOs) makes a successful defense against undefeated Chris Algieri (20-0, 8 KOs) in Sunday's main event at Cotai Arena in Macao, the stars will align for a long-awaited showdown between Pacquiao and unbeaten World Boxing Council champ Floyd Mayweather (47-0, 26 KOs) for the unified welterweight crown.
At this point it is all conjecture, but Zou's enormous popularity in China is the key to the mint. In terms of TV popularity the double Olympic gold medalist from Zunyi, Guizhou province, is the hottest property in the sport Cheap Adidas Originals Superstar 2 Casual Shoes White , with his fights drawing an average audience of about 350 million viewers nationwide.
As first reported by Britain's Daily Mail earlier this week, the linchpin of the projected billion-dollar bout between Pacquiao and Mayweather is a plan by Top Rank promoter Bob Arum to make that fight－with Zou's title shot as the featured prelim－the first pay-per-view event televised in China ... at a substantially lower cost than for the rest of the planet.
""Zou is the driving force for taking pay-per-view to China; he's a national hero and hundreds of millions of his countrymen tune in every time he's on TV,"" Arum said earlier this year.
""Combine Zou's massive appeal with the drawing power of Pacquiao-Mayweather, and you're looking at numbers nobody ever dreamed possible. At $5 a buy, even if only 10 percent of the Chinese population signed up, that's around $650 million. It's staggering.""
The Chinese PPV would most likely be delivered online or via smart phones. Arum could also bank on another $300 million from pay-per-view in North America, based on an average buy of about $95.
With worldwide PPV accounting for $950 million and additional revenue generated by the site fee in Macao or Las Vegas Cheap Adidas Originals Superstar 2 Casual Shoes Black White , live gate sponsorships and merchandising, the $1 billion plateau suddenly becomes very reachable.
The combatants, of course, would get a generous slice of that enormous pie. Even if Pacquiao acceded to Mayweather's oft-voiced demand for a 60-40 split of their purse, the Philippines congressman could expect to walk away with upwards of $120 million to the American's $140-$150 million. As for Zou, $20-30 million would not be out of the question.
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