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FARAH Cheap Air Max 90 , Afghanistan, Aug. 11 (Xinhua) -- At least 30 Taliban militants were killed in an accidental blast in Afghanistan's western province of Farah, the provincial government spokesman said Friday.


The explosion took place in Pewa Pasaw locality of Bala Buluk district, northeast of provincial capital Farah city on Thursday before the militants tried to attack government security forces' positions, Nasir Mehri told Xinhua.


"As soon as the militants were getting ready for the assault http://www.ordercheapairmax.com/ , the suicide jacket of a would-be suicide bomber detonated prematurely, setting off a handful of explosive, killing 30 militants on the spot, and leaving a few militants wounded," he said.


Taliban militants have been on the rampage since April when they launched an annual rebel offensive in different places in Afghanistan Cheap Air Max Wholesale , including the capital of Kabul, killing and injuring hundreds.


The province bordering Iran has been the scene of clashes between security forces and Taliban militants over the past years.


On Wednesday night, the U.S.-led coalition forces destroyed a Taliban's explosive depot in neighboring Khaki Safed district following an airstrike, which destroyed two car bombs and more than 1 metric ton of explosive materials in the province, 695 km west of Kabul.


The Taliban militant group has yet to make comments.


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SAN FRANCISCO Cheap Air Max Shoes , Aug. 12 (Xinhua) -- Electrical engineers at Stanford University have identified two semiconductors, hafnium diselenide and zirconium diselenide, that share or exceed some of silicon's desirable traits, starting with the fact that all three materials can "rust," which insulates its tiny circuitry.


Described in a paper published Friday in the journal Science Advances Cheap Air Max Mens , the new materials can be shrunk to functional circuits just three atoms thick and they require less energy than silicon circuits.


Among several qualities that have led silicon to become the bedrock of electronics, one is that it is blessed with a very good "native" insulator, silicon dioxide or, in plain English, silicon rust.


Exposing silicon to oxygen during manufacturing gives chip-makers an easy way to isolate their circuitry. Other semiconductors do not "rust" into good insulators when exposed to oxygen Cheap Air Max Womens , so they must be layered with additional insulators, a step that introduces engineering challenges.


Both of the diselenides the Stanford researchers tested formed this elusive, yet high-quality insulating rust layer when exposed to oxygen. Both ultrathin semiconductors form what are called "high-K" insulators, which enable lower power operation than is possible with silicon and its silicon oxide insulator.


In addition, as they started shrinking the diselenides to atomic thinness Cheap Nike Air Max , the researchers realized that the semiconductors share another of silicon's secret advantages: the energy needed to switch transistors on, a critical step in computing called the band gap, is in a just-right range.


While both materials were in the same optimal range as silicon, any other semiconductors that need too low energy to switch transistors on could result in leaky and unreliable circuits, and others that need too high could lead to circuits taking too much energy to operate and becoming inefficient.


The combination of thinner circuits and desirable high-K insulation means that the two ultrathin semiconductors could be made into transistors 10 times smaller than anything possible with silicon today.


Although still experimental Cheap Air Max , the researchers believe the materials could be a step toward the kinds of thinner, more energy-efficient chips demanded by devices of the future.


Next, they need to refine the electrical contacts between transistors on their ultrathin diselenide circuits, work to better control the oxidized insulators to ensure they remain as thin and stable, then begin to integrate with other materials and to scale up to working wafers Cheap Air Max Tailwind 4 , complex circuits and eventually complete systems.


As there is much work ahead, the researchers acknowledge that silicon will not go away for quite a long time.


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