化学计量学

Stoichiometry: Determination of the proportions (by weight or number of molecules) in which elements or compounds react with one another.

化学计量学：确定化学元素或化合物彼此反应的比例关系。你的身材可不是一个姑娘的身材。

In the forth chapter, three three-way data resolution methods (Tucker 3, Parallel factor analysis and alternative trilinear decomposition ) are applied in the analysis of overlapped peaks of three kinds of amino acid in fluorescence.

结果表明，三种算法都能有效地解决荧光光谱严重重叠的几种物质的同时定性和定量分析，化学计量学三维数据分辨方法可应用来解决常规方法所不能解决的问题，具有一定的理论和现实意义。

ABSTRACT Objective To apply near infrared diffuse reflectance spectrophotometry and chemometrics for the quantitative analysis of azithromycin dispersible tablets.

目的 应用近红外漫反射技术和化学计量学的方法对阿奇霉素分散片进行定量分析。

Main factors to bring ultrasonic level measurement error were studied and emendable error model of ultrasonic level measurement instrument was established according to the error characteristics in the process of measuring.

本论文运用化学计量学中的回归分析法、最优化方法、模式识别方法和计算机技术，对原油生产集输过程的实时盘库系统（目前国内尚未解决的难题）和气相色谱分析进行研究，完成了以下研究工作。

A new chemometrics method, which is based on the combination of wavelet transform and Partial Least Squares, is applied to simultaneous determination of Pb2 + and Tl+ mixtures by oscillographic chronopotentiometry.

提出了基于小波分析和偏最小二乘(Partial Least Squares，PLS)基础上的化学计量学方法用于示波计时电位同时测定铅和铊的研究。

The results shown that both [Cu_2]~2+ and NR molecular can intercalates into the DNA double helix layer, and there is a competition between these two interactions. Furthermore, chemometrics approach, parallel factor analysis, was used to resolve the measured three-way CW-SFS data, which provided simultaneously the concentration information for the three reaction components, NR, [Cu_2]~2+ and NR-DNA, for the system at each equilibrium point. This PARAFAC analysis indicated that the intercalation of the [Cu_2]~2+ molecule into the DNA proceeds by exchanging with the NR probe, and can be attributed to two parallel reactions.

本工作以同步荧光技术采集了竞争作用的三维数据，并结合了化学计量学中的平行因子法对此三维数据进行分解，得到了各组分的荧光光谱图及各个反应平衡点各组分的相对浓度，平衡浓度的变化趋势也表明了铜络合物与中性红之间的竞争作用，进一步表明了铜络物与DNA的作用方式和中性红与DNA作用方式一样均为嵌插作用。

These selected variables were used in the determination of total volatile alkaloids and total nitrogen in tobaccos by partial least squares method.

偏最小二乘法[3]和主成分回归[4]是NIR技术中常用的两种化学计量学方法，曾被认为对噪音信号不敏感，在对庞大的数据矩阵进行处理时不需要变量筛选，但大量的研究工作表明，有效的变量筛选可以改善模型的预测能力和减少模型的复杂程度[5～8]。

Emulsion wax ; furniture polish ; floor polish ; uniform design ; optimization

乳化蜡；家具地板去污上光剂；优化；均匀设计；化学计量学

UV and NIR were used for online detecting in this study. Furthermore, some chemometrics algorithms such as SMLR, PCR, PLS, SVM, etc. were used to establish the rapid quality evaluation methods of the raw materials, intermediates and preparation of Qingkailing injection. This study provided an example of online quality control of Chinese medicine injection and oral liqid. The formula of Qingkailing injection is composed of cholic acid, hyodeoxycholic acid, Cornu Bubali, baicalin, Radix Isatidis, Fructus Gardeniae, Flos Lonicerae Japonicae and Concha Margaritifera.

本研究采用适合在线检测要求的紫外光谱和近红外光谱分析技术，结合逐步多元线性回归、主成分回归、偏最小二乘和支持向量机等化学计量学方法建立清开灵注射剂生产原料药、中间体和成品的快速质量评价方法，为中药注射剂及口服液的在线质量控制提供研究思路。

Based on determination of the components of naphthas by gas chromatography,we make use of near infrared spectrum and stoichiometry to build up a quick,precise analytical approach to determine the composition of naphthas.

以气相色谱法测定石脑油族组成为基础，采用近红外光谱和化学计量学方法建立了快速、准确测定石脑油族组成的分析方法。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。