Ab initio calculations are performed, using a slab model with 6 atom-layers, to investigate the character of clean surface, surface with vacancy.
利用第一性原理赝势法，采用6层原子层的层晶模型研究了完整铜表面、含空位缺陷表面的性质。
Ab initio DFT/B3LYP calculations at 6—31G basis set level were carried out for the possible product radicals of guanine attacked by·OH.
采用密度泛函（DFT）理论中B3LYP方法在6— 31G基组水平上对鸟嘌呤（G）受羟基自由基进攻形成的各种可能产物自由基进行几何全优化。
Ab initio molecular orbital and density functional theory (DFT) in conjunction with different basis sets calculations were performed to study the N-H... o blue-shifted hydrogen bond in the HNO dimer.
利用分子轨道从头算理论和密度泛函理论结合不同理论基组对于N - H…O蓝移氢键进行了详细的研究。
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