为了在单边核磁共振仪器外产生梯度恒定的磁场，提出利用基于拓扑优化和有限元法的优化设计方法。
To obtain a constant gradient magnetic field outside unilateral nuclear magnetic resonance (NMR), optimal design method based on finite element method (FEM) and topology optimization is proposed.
一个简单的迭代法叠加套核磁共振结构和计算得出的均方根误差(均方根偏差)的集描述。
A simple iterative method for superimposing sets of NMR derived structures and calculation of the root mean square deviation (RMSD) of the sets is described.
利用核磁共振和红外光谱法研究工业烷基酚的结构。
The structure of industrial alkylphenol was characterized by NMR and IR spectroscopy.
方法利用硅胶柱色谱法对牛白藤进行分离纯化，根据理化性质和核磁共振谱数据鉴定其结构。
Methods the compounds were isolated and purified by repeated silica column chromatography and identified by their physical characteristics and nuclear magnetic resonance spectrum.
方法采用RP HPLC法对荧光素钠注射液进行成分分析并用硅胶柱色谱法对主要杂质进行分离，根据质谱和核磁共振谱数据进行结构鉴定。
Methods The components were analyzed using RP-HPLC. The main impurities were separated using silica gel column chromatography, which were identified by MS and NMR.
并利用荧光光谱和核磁共振波谱法研究了芳香性氨基酸与ATP的弱相互作用。
The non-covalent interactions between ATP and Phe or Trp were also investigated by fluorescence spectrometry and NMR.
采用核磁共振（ NMR）、X衍射仪、 差示扫描量热法（ DSC）、凝胶渗透色谱（ GPC）等分析技术对无规共聚聚丙烯（PPR）管材专用料的结构和性能进行研究，并且与国外料进行了对比。
Structure and properties of the special random copolymer of propylene(PPR) for pipe were studied by NMR, XRD, DSC and GPC and compared with imported samples.
采用核磁共振（ NMR）、X衍射仪、 差示扫描量热法（ DSC）、凝胶渗透色谱（ GPC）等分析技术对无规共聚聚丙烯（PPR）管材专用料的结构和性能进行研究，并且与国外料进行了对比。
Structure and properties of the special random copolymer of propylene(PPR) for pipe were studied by NMR, XRD, DSC and GPC and compared with imported samples.
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