多量子NMR能得到比寻常NMR方法简单的解析谱,从而增进了研究分子结构和构型的可能性。
The techniques have advantages over conventional single quantum NMR method in obtaining simple analyzable spectra which make study of molecular structure and conformation possible.
然后他们从细菌中提取出dna,利用高解析二次离子质谱技术分析了其中的化学组成,发现DNA中也含有砷。
They also separated out the DNA from the bacteria and analyzed its composition using a technique called high-resolution secondary ion mass spectrometry; the isolated DNA contained arsenic.
本文同时还用聚类分析法研究了漆膜裂解质谱数据隐含的年代信息,并讨论了实验条件的稳定性对解析结果的影响。
Hidden age messages of pyrolysis mass spectra data of lacquer film by cluster analysis method were investigated and discussed. The stability of experimental factor influenced on analysis result.
导出了平面近场测量中近场幅相随机误差所引起的误差谱的解析表达式。
The analytical expressions of the error spectra caused by random errors in the measurement of amplitude and phase of the near field in planar near field measurements are presented.
本研究结果为大规模的蛋白质质谱数据解析提供了有价值的参考。
These results will be very helpful in the mass spectrometric data analysis of proteomic study.
本文研究了在空间相关地面运动数学模型下线性体系振动反应的前三阶谱矩的特点和它们的解析计算方法。
This paper studies the Characteristics of the first three spectral moments for the response of linear systems under the space-interrelated ground motion model and an analytical method.
对长周期光纤光栅传输谱谐振波长的应变特性用耦合模理论进行研究,推导出谐振波长应变灵敏度的解析表达式。
The strain sensitivity characteristic of long-period fibre grating (LPFG) was studied by coupled-mode theory and the strain sensitivity analytic equation of the resonant wavelength was deduced.
文中介绍了质谱解析的基本方法,讨论了利用开放式可扩充体系结构MA TLAB语言开发综合性计算机辅助质谱解析初级专家系统的构想和设计思想。
The paper introduced the MS analysis method and discusses the design and application of the expert system for MS analysis based on the opening and expansion structure of MATLAB language.
提出了依据宽带随机谱功率密度函数求解等效应力幅的半解析公式。
The semi-analytical solution for evaluating ESR from spectral density function of wide-band random loading is presented.
讨论了散射振幅的解析性质和波函数、能谱方程以及相移的非相对论近似。
The non-relativistic approximation of wave functions and energy equation and phase shifts are also studied.
本文在输入地震动功率谱为c - P谱的假设下推导了计算组合系数的解析公式。
Analytic formulas for combination coefficients are deduced in this paper under the assumption that the input power spectrum is C-P spectrum.
通过对红外光谱、1H - nmr谱的初步解析,证实了环化反应的发生。
The occurrence of SBR cyclization was confirmed by the primary analysis of ir and 1 H-NMR spectra.
本文通过GC/MS/DS检索,人工解析质谱与标准质谱对照的方法,从红橙皮油中分析鉴定了49个成分。
The chemical constituents of red orange oil were studied by use of GC/MS/DS in this paper, 49 constituents were identified.
采用一个高斯和劳伦兹的混合函数对不同电解质电化学氧化后碳纤维的XPS谱图进行了解析。
The XPS spectra of carbon fibers electrochemically oxidized in acetic acid, nitric acid, phosphoric acid, sulphuric acid and ammonium carbonate were fitted by a Gaussian Lorentzian mixed function.
提出了连续小波变换-纯变量法(CWT-PVA)解析气相色谱-质谱(GC-MS)重叠信号的新方法。
An algorithm for resolution of overlapping gas chromatographic-mass spectrometric(GC-MS) signal using continuous wavelet transform-pure variable approach(CWT-PVA) was proposed.
利用元素分析、红外光谱、核磁共振氢谱和激光解析电离飞行时间质谱确证了其组成和结构。
Their chemical structures were confirmed by means of elemental analysis, infared spectra, proton nuclear magnetic resonance spectra and mass spectra.
概述了电喷雾电离质谱(esi - MS)、基质辅助激光解析电离质谱(MALDI - MS)的原理。
The principle of electrospray ionization-mass spectrometry (ESI-MS) and matrix assisted laser desorption ionization-mass spectrometry (MALDI-MS) is described.
从雷达杂波的分布特性出发,分析了杂波的解析模型,阐述了雷达杂波幅度的概率密度分布及其功率谱密度分布。
Based on radar clutter distribution, the radar clutter model is analysed for amplitude probability density distribution and power spectrum density distribution.
结果通过谱库检索及结构解析确定了19种甾体成分的结构并提出了辨别麝香真伪的特征方法。
RESULTS: 19 kinds of Steroids in natural musk samples were illustrated by library searching or structure elucidation. and the characteristic method of telling the true from the false is proposed.
经esca谱图解析分析,证明了BET在煤表面的吸附,并随bet的用量增加而增加。
Through the analysis with ESCA charts, it has proved that BET on the surface of Coal is absorbed by adding the BET as the increasing.
根据实验和实例数据,探讨了二次离子质谱或激光离子探针质谱在分析数据解析须掌握的基本方法。
Based on experiments and the data analysis, the basic method for analyzing SIMS or LIPMS data was discussed.
将以误差反向传播为训练算法的前馈式人工神经网络(BP- ANN)首次用于中草药的裂解气相色谱谱图解析。
The potential utility of feed forward artificial neural network using the back propagation algorithm (BP-ANN), in interpreting pyrogram data from traditional Chinese medicine was discussed.
使用解析法和仿真法分析了SWIM工作在模式2时海浪谱观测的能量误差,两种方法的结果一致。
Two methods, namely, analytical process and simulation process, are adopted to analyze the energy error of retrieved wave spectra by SWIM operated at Mode 2.
并在二级质谱中通过对一些化合物碎片峰的解析,得到了PPO的裂解方式。
The fracture manner of PPO was obtained through analysing some fragment peaks of compounds in the second - order mass spectrum.
通过谱图解析找出了成色剂化合物的质谱碎裂规律;归纳出了利用质谱分析成色剂结构的方法。
The MS fragmentation law of color couplers have been established by analyzing the mass spectra of such compounds and a…
通过谱图解析找出了成色剂化合物的质谱碎裂规律;归纳出了利用质谱分析成色剂结构的方法。
The MS fragmentation law of color couplers have been established by analyzing the mass spectra of such compounds and a method for analyzing the structures of co…
通过解析noesy谱中的noe相关点,完成了对其序列以及主链和侧链质子的全部归属。
The sequence-specific assignment of spin systems was obtained by noes correlation in wet-noesy spectra and the complete assignment of proton resonances for backbone and side chain has been achieved.
通过解析noesy谱中的noe相关点,完成了对其序列以及主链和侧链质子的全部归属。
The sequence-specific assignment of spin systems was obtained by noes correlation in wet-noesy spectra and the complete assignment of proton resonances for backbone and side chain has been achieved.
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