本文用密度泛函理论方法系统地研究了稀磁半导体材料。
First-principles methods based upon density functional theory are performed for diluted magnetic semiconductor.
用密度泛函理论方法研究了过亚硝酸在水溶液中的异构化反应机理。
The isomerization mechanism of peroxynitrous acid (ONOOH) in the aqueous solution has been studied by using density function theory.
该分子材料具有较强的非线性光学性质，其分子的电子结构和电偶极矩是在密度泛函理论水平上利用从头计算方法得到的。
This kind of molecular material has strong nonlinear optical properties, and its electronic structures and dipole moments are calculated by use of density functional theory on ab initio level.
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。
The reaction of HNO with o radical was investigated by density functional theory (DFT) and ab initio methods.
反应能量主要采用原子团加和方法以及密度泛函理论进行估算。
Reaction energy was always estimated by Group additivity method and density functional theory.
综述了密度泛函理论及其数值方法的最新进展。
Recent progress in density functional theory (DFT) and its numerical methods is briefly reviewed.
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。
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.
在第二章中，介绍了密度泛函理论和量子化学计算方法。
In the second chapter, the basic concept of DFT and the method of quantum chemistry calculations have been introduced.
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。
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.
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。
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).
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 DFT/B3LYP calculations at 6—31G basis set level were carried out for the possible product radicals of guanine attacked by·OH.
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。
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.
基于密度泛函微扰理论(DFPT)结合模守恒赝势方法进行晶格动力学模拟。
Based on density functional perturbation theory (DFPT) and combined with the norm-conserving pseudopotential method, the lattice dynamic simulation is presented.
而密度泛函理论就是一种很有效的研究纳米器件的理论方法。
Density Functional Theory is a very useful theoretical method to study this kind of materials.
而基于密度泛函理论的第一性原理计算方法，则是计算材料科学的重要基础和核心技术。
The first-principle calculation, which is based on the Density Functional Theory, is playing important role in computational materials.
本文基于局域密度泛函理论（LDF）和LMTO-ASA方法，计算了稳定的六角结构碳化钨和碳化钼的自洽能带结构，总态密度和分波态密度。
The self-consistent band structure, total and partial density of states for the stable compounds hcp-WC and MoC are calculated by the LMTO-ASA method based on Kohn-Sham's LDF theory.
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。
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。
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.
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