The EI mass spectra of 19 new substituted thiourea compounds were studied.
研究了两类19种取代硫脲类化合物的低分辨ei质谱。
After mass spectra identification, 10 protein spots were confirmed at last.
质谱鉴定后，10个蛋白得到确认。
Mass spectra of thirteen epimers of podophyllotoxin and its derivatives have been examined.
本文考察了十三个鬼桕毒及其衍生物的立体异构体的质谱性能。
The fast atom bombardment (FAB) mass spectra of free bile acids and their succinyl derivatives are described.
本文研究游离胆汁酸及其丁二酸衍生物的快速原子轰击（FAB）质谱。
The hydrogen, helium, nitrogen and argon beams thus produced were analyzed and their mass spectra were measured.
并对氢、氦、氮、氩等气体产生的离子束进行了磁分析，测定了离子束的质谱。
Classification of mass spectra of toxic compounds is based on the numerical features derived from spectral data.
有毒化合物质谱分类是以光谱数据的数值特性为基础的。
Therefore, mass spectra gained by these three ionization modes are satisfactorily used to analyse liquid crystals.
三种质谱并用，能有效地测试液晶化合物。
The reaction conditions were studied and the structure was characterized by HNMR and mass spectra. The yield was 80%.
介绍了读物质的分离纯化方法，并用HNMR及质谱对其进行了结构表征。
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 electron impact and field desorption mass spectra of 10 2,4-diamino-6-substituted quinazoline sulfonamides were investigated.
研究了10种2，4-二氨基-6-取代磺酰胺喹唑啉类药物的电子电离及场解吸质谱。
The mass spectra were interpreted mainly by comparing the fragments of six compounds, and their fragmentation patterns were proposed.
探讨该化合物的质谱特征离子与裂解途径，提供莽草酸的质谱学基础。
Pyrolyisis products were analyzed with the coupled techniques of pyrolysis chromatography-IR and pyrolysis chromatography-mass spectra.
同时对水的水解和增塑作用进行了定量分析。
In this paper, formulas for relationship among oxygen mass spectra peak heights and for calculating oxygen isotope abundance are drived.
本文推导出氧质谱峰高之间的关系和计算氧同位素丰度的公式。
The isotopic effect suggests another important property, ia addition to the magic numbers, of mass spectra of the sputtered ion cluster.
这是溅射离子簇质谱中继“幻数”结构的另一个重要性质。
A method is discussed for identifying the nitrogen heterocyclics by using GC retention data, mass spectra and MS library search results.
探索了色谱保留值与质谱信息相结合的定性分析方法。
Mass spectra of proteins such as ribonuclease A and lysozyme were obtained with substantially enhanced abundant peaks of low charge states.
采用核糖核酸A、溶菌酶等样品和商品化的线性离子阱质谱仪对该电离源进行了表征。
The features of Field Desorption Mass Spectra and its application in the analysis of thermolabile substances and nonvolatile compounds are described.
本文简述了场解吸质谱的特点，以及在热不稳定化合物和难挥发化合物的分析中的应用。
Their chemical structures were confirmed by means of elemental analysis, infared spectra, proton nuclear magnetic resonance spectra and mass spectra.
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。
A computer program DCP-AIMS-EP on artificial intelligence (AI) interpretation of mass Spectra of environmental pollution (EP) compounds is described.
本文叙述了环境污染物质谱人工智能解释计算机程序“DCP - AIMS -EP”。
Mass spectra (MS) of cholesterol esters and halides were obtained by means of Electron Impact (EI), Field Desorption (FD) and Chemical Ionization (CI).
研究了胆甾醇酯类和胆甾醇卤代物的电子轰击电离（EI）、场解吸电离（FD）、化学电离（CI）的质谱。
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。
A dynamic method is used to describe the fragmentation rules, and the program can predict mass spectra automatically for compounds of various kinds of structures.
程序采用动态描述方法存储裂解规则，可自动进行各种结构类型化合物的质谱预测。
Datamining in Mass databases (chapter2) : Aim of this study is to predict the presence or absence of the certain substructure by learning from Mass spectra library.
质谱库的数据发掘(第二章)：这部分的主要目的是通过对质谱数据库的机器学习，来达到对未知化合物的某些结构或子结构的预测。
Using moderate resolution capabilities of a desk time-of-flight (TOF) instrument, the fragmentation regularity from electron impact mass spectra of vitexin was studied.
利用台式飞行时间质谱的中分辨本领，研究了牡荆素的电子轰击质谱的裂解规律，对裂解途径进行了完全的指认。
A study of doubly charged ion mass spectra (2E spectra), the substituents effect and the target gas pressure deppendence of biphenyl derivitives was presented in this work.
本文研究了联苯取代物双电荷离子2E谱及其取代基效应和靶气压力影响。
Their thin-layer chromatogram, fluorescent spectra and fast atom bombardment mass spectra were examined to verify the completeness of the reaction and also to assign the structures.
用硅胶薄层色谱、荧光光谱及快原子轰击质谱证实反应物的完全性及其结构。
The tungsten tip was treated by heating before and after single walled carbon nanotubes (SWCNTs) were assembled on it, and the mass spectra of the residual gas were recorded and analyzed.
分别对W针尖上未组装和组装单壁纳米管进行热处理，然后对所得残气质谱图进行记录和分析。
In order to reveal the aging mechanism, the analyses of infrared attenuated total reflection (ATR), mass spectrum (MS) and pyrolysis gas chromatograph-mass spectra (PYGC-MS) were performed.
利用红外光谱（ATR）、质谱（MS）及裂解气相色谱质谱（PYGC MS）等方法分析了硅橡胶老化机理。
The substance, which may have a role in fungal virulence, has been characterized mainly using spectroscopic methods (1H and 13C nuclear magnetic resonance and high resolution mass spectra).
该物质，可能有一个真菌毒力的作用，就一直主要是利用光谱方法（1H和13C核磁共振和高分辨质谱）。
The substance, which may have a role in fungal virulence, has been characterized mainly using spectroscopic methods (1H and 13C nuclear magnetic resonance and high resolution mass spectra).
该物质，可能有一个真菌毒力的作用，就一直主要是利用光谱方法（1H和13C核磁共振和高分辨质谱）。
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