比较光谱

MIR technology is adopted in some ASTM methods, and is applied to the study of aromatics content in diesels in this paper.

本文简要介绍了中红外光谱技术定量分析的原理及应用中红外光谱技术测定柴油中芳烃含量的方法，并与传统柱色谱法进行了比较。

The works in the project just done can be summarized as five respects.(1) A device was designed to fabricate the asymmetrical resonant cavities by a pendant drop. A series ARCs with variable parameters provides a valuable experimental method for investigating the characteristics of ARCs.(2) The relationship between the number of active modes and the shape parameters in an ARC was investigated. The experimental lasing threshold was compared with theoretical result, the good agreement between two shown that it was the decrease of the number of active modes in an ARC that decreased lasing threshold.(3) Dye lasing gain was used to enhance the signals of stimulated Raman scattering of the weak gain Raman modes in a circular cavity made by a pendant drop, the instantaneous SRS spectra of weak gain Raman modes in ethanol was obtained by this new method.(4) The SRS signals of minority compound in a binary chemical complex was obtained by using dye lasing gain method. The detection concentration of minority compound was reduced to an order compared with normal SRS method.(5) A cylindrical circular cavity was formed by a liquid jet, which was used to reduce the pump intensity required for laser induced plasma spectroscopy. The limit of detection of trace element in aqueous sample was greatly decreased by this new method.

我们设计并成功制作了使悬垂液滴连续变形的装置，用此装置可以方便地改变非圆对称谐振腔的几何参数，为ARCs的研究提供了一种有效的实验方法；研究了ARCs中活性模式数和变形参数间的变化规律，激光阈值的数值计算结果和激光辐射的实验结果作了比较，二者吻合的曲线说明ARCs中活性模式数量的减少是受激辐射放大阈值降低的原因；在由单元化合物构成的微型圆对称谐振腔中，首次尝试用"激光增益"增强弱增益拉曼模式的受激拉曼散射信号，获得了乙醇分子中弱增益拉曼模式的瞬态SRS光谱；在由二元混合物构成的微型圆对称谐振腔中，用染料的激光增益增强了少量化合物的SRS信号，把少量化合物的SRS信号探测浓度降低了近一个数量级，在SRS应用于瞬态过程的组份分析方面做了卓有成效的探索；用石英毛细管形成的稳定液拄构成拄形谐振腔，降低了激光诱导等离子体光谱需要的激励能量，有效地降低了水相样品的痕量元素分析极限，为LIPS应用于微量元素的化学分析开拓了一条新的技术路线。

The spectral data were analyzed by weighted correlation. Pearson's R and Δ R (defined as the absolute value of the difference between Pearson's R and its mirror image in the correlation table) were calculated and used for assessing the spectral similarity between the drugs.

利用加权相关分析对以上光谱数据进行分析，得到各产品之间的Pearson′s R和ΔR(Pearson′s R 与其镜像位置值的绝对差值)，并以此进行各产品的光谱相似性比较。

It acquired the interference signal of He-Ne laser whose wavelength is 632.8nm by this FMI. Fourier Transform algorithm is used to calculate the spectrum. The difference between the spectrum acquired by our experiment and by traditional grating spectrometer are also analyzed which can present helpful reference to develop FFTS further.

使用该干涉仪测量了632.8nm He-Ne激光光源的干涉信号，采用傅里叶变换算法计算了其光谱图，并与传统光栅光谱仪测量的光谱图进行了比较，分析了两者存在的差异及其原因，为FFTS的后续研制工作提供了有益参考。

The results show that,the proposed feature of adding window spectrum integral can effectively describe spectral curve,an...

实验结果表明，加窗光谱积分特征可以有效地描述光谱曲线，获得了比较好的正确分类率。

In this paper, we have done some work on lossless hyperspectral images compression as follows: First of all, we analyze the characteristic of hyperspectral images, and compare it with common images.

本文主要关注于高光谱图像的无损压缩，所做的工作如下：首先分析了高光谱遥感图像的特性，将它和普通图像进行比较。

Finally, we conclude that the spectra have essentially different characterizations for N-atom mazer with N being odd and even integers.

通过对入射原子团包含奇数和偶数个原子的腔场光谱的比较，我们得出了以下结论：对于多原子微激射器，含奇数与偶数原子的入射原子团激发的腔场的光谱的特征存在显著差异。

The most parts of thesis as follows:1. Five symmetrical intra-molecular charge transfer oligomeric phenylene vinylene light emitting materials were designed and synthesized using oligomeric phenylene vinylene as a framework.2. The structures of target molecule were characterized by ~1HNMR,~(13)CNMR, IR, MS and element analysis.3. In order to study the influence of the location and numbers of electron-donor and electron-acceptor on their photoelectric performance by changing length of OPV chain, the UV spectra and fluorescence spectra of target compounds has been compared. We have researched into main factors effecting on material emitting red-shift; organic electroluminescence device was prepared using the compound P4. The capability of eletroluminescence was researched.4. The photoelectric properties of P4 was explained by quantum chemical calculation (the Gaussian 98 quantum chemistry program). It is greatly contributed know the whole process of charge transfer to guide the design of red emitters.

本文研究的内容主要包括以下部分：(1)设计并合成5个对称的以齐聚苯乙烯类为骨架的分子内电荷转移型齐聚苯乙烯类发光材料；(2)通过IR，MS，~1H-NMR，~(13)C-NMR和元素分析对所合成的目标化合物进行表征；(3)通过对目标化合物的紫外光谱和荧光光谱比较分析，研究改变OPV的长度，电子给体和电子受体的位置及数量对其光电性能的影响，探讨材料发射红移的主要因素；选取性能良好的目标化合物P4制备成OELD器件，对其电致发光性能进行研究；(4)运用Gaussian98量子化学程序包，采用量子化学方法对目标化合物P4的光电性能从理论加以解释，进一步认识荷移跃迁的整个过程，为红光材料的设计加以指导。

A new unsymmetrical metal porphyrin- 5-{4-[3-(2-nitro-phenoxyl) propoxy]phenyl }-10, 15, 20-tri-(4-methoxy phenyl )porphyrin copper (compound Ⅱ)was synthesized,and its UV-Vis spectra were measured and compared with other three symmetrical metalporphyrins.

本文合成了一个新的非对称卟啉铜化合物，测量了其紫外－可见光谱，并将此光谱结果与其他三种对称金属卟啉的光谱进行了比较。

Compared with the arithmetic mean values of the emissivities within 8-14urn IR spectral band,the theoretical formula and its practical uses for calculating the mean value of the emissivity with the mean spectral emissivities are determined in narrow bands.

就8～14μm红外光谱区内利用测得的多个窄波段的平均光谱比辐射率计算该光谱区的平均比辐射率进行了理论分析和实验研究；并与相应的算术平均值进行了比较。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。