It was performed by adopting the first-principles calculation of plane wave ultra-soft pseudo-potential technology of based upon the Density Function Theory (DFT).

所有计算都是基于密度泛函理论(DFT)框架下的第一原理平面波超软赝势方法。

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Peters, 64, has been one of the last people that about 20, 000 soldiers so far have seen before boarding the plane for the war zone -- and one of the first seen upon return.

CNN: Veteran to soldiers: 'It's OK to be scared'