In general though, linear scaling DFT is still quite rare and DFT calculations on a routine basis typically involve a few hundreds or thousands of atoms.
通常情况下，线性缩放密度泛函理论的应用还是很少的，而密度泛函理论只能计算成百、成千的原子电子结构。
Density functional theory (DFT) of quantum chemistry was briefly introduced.
简要介绍了量子化学中的密度泛函理论。
Density function theory (DFT) is employed to simulate the absorption spectrum.
本文采用密度泛函理论来模拟吸收谱。
The reaction of HNO with o radical was investigated by density functional theory (DFT) and ab initio methods.
用密度泛函理论(DFT)和从头算方法，对HNO与O自由基反应进行了研究。
Meanwhile, the linear scaling algorithms of DFT are getting mature, which makes the application of DFT to large systems such as biological macro molecules become possible.
与此同时，线性标度的密度泛函理论算法日趋成熟，使得通过密度泛函理论研究诸如生物大分子之类的体系成为可能。
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。
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。
In the second chapter, the basic concept of DFT and the method of quantum chemistry calculations have been introduced.
在第二章中，介绍了密度泛函理论和量子化学计算方法。
The density profile of hard sphere fluid confined in two parallel hard walls was studied by using Rosenfeld density Functional Theory (DFT) and Molecular Dynamics (MD) simulation method.
利用密度泛函理论和分子动力学方法，对处于两平行硬墙之间的硬球流体的密度分布进行了计算。
Recent progress in density functional theory (DFT) and its numerical methods is briefly reviewed.
综述了密度泛函理论及其数值方法的最新进展。
The reaction mechanism between atomic oxygen radical anion and benzene has been investigated using the density functional theory (DFT).
采用密度泛函理论研究了氧负离子自由基与苯分子的反应。
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。
The time-dependent DFT (TD-DFT), CIS and TD-HF studies have been performed on the UV-spectrum of phenanthrene. Based on the optimized geometries, the vertical excitation energies were calculated.
用含时密度泛函理论TDDFT及组态相关CIS、含时td HF方法对菲的UV光谱进行了理论研究，在几何构型优化的基础上，计算了其垂直电子激发能。
Based on density functional theory (DFT) and B3LYP method, we made a theoretical study of the reaction system involving organic transitional metal compound. We studied the mechanism of each reaction.
本文采用密度泛函理论B3LYP方法对有机过渡金属化合物参与的化学反应体系进行了理论研究。
The density functional theory (DFT) is used to describe the perpendicular phase separation of binary mixed polymer brush grafted on a surface immersing in different solvents.
采用加权密度近似密度泛函理论研究了二元混合接枝高分子刷在不同性质溶剂诱导下的垂直相分离情况。
On the one hand, it tests the results of experiment; on the other hand, it provides theoretical guidance for the experiment. Based on the experiment, we study silica anion cluster using DFT method.
本论文在实验基础上，通过密度泛函理论中的B3LYP方法结合不同的基组对二氧化硅离子团簇进行了理论研究。
However, the accuracy of DFT for treating water in all its various phases and at surfaces is still not as good as we would like.
然而，在对待不同相的水使用密度泛函理论计算分析时，精确性依然不够好。
However, the accuracy of DFT for treating water in all its various phases and at surfaces is still not as good as we would like.
然而，在对待不同相的水使用密度泛函理论计算分析时，精确性依然不够好。
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