比较光谱

The rocking curves of different area have been measured by high resolution X-ray diffractometry. The reflections were indexed, furthermore the polytype structures were identified. The results are consistent with those of Raman spectroscopy analysis. It is demonstrated that Raman spectroscopy is a simple and powerful method for the determination of SiC polytypes.

同时采用高分辨X射线衍射测量了该晶片不同区域的摇摆曲线，将不同多型体的计算衍射角与实验值加以比较，对SiC晶片中的多型进行了标注，所得结论与激光Raman光谱测定结果相一致，说明Raman光谱是一种简单、快速地鉴定多型结构的强有力的工具。

It has been found that the spectral energy density and radiation pressure of a Kerr nonlinear blackbody are larger than those of a normal blackbody, and there is a regular variety of the spectral energy density and radiation pressure in a Kerr nonlinear blackbody with the change of temperature and frequency.

通过和普通黑体比较发现，克尔非线性黑体的光谱能量密度和辐射压强都要比普通黑体大，非线性黑体中的热辐射光谱能量密度和辐射压强随着温度和频率的改变有着规律的变化。

Compared with the absorption positions of chlorophyll in acetone, a bathochromic shift was observed at the absorption peaks of chlorophyll in DMF and DMSO.

与叶绿素在丙酮溶剂中的光谱特性吸收峰位置相比较，叶绿素的光谱特性吸收峰在DMF与DMSO两种溶剂中显现了向红位移。

The free radical scavenging properties of six Aloe species are to be investigated in some modified chemical system. The antioxidant was purified by silica column and thin layer chromatography and analyzed by HPLC. A fraction was purified from A. brevifolia Mill showed the most effective scavenging activities on 〓 and ·OH (66. 01% and 38. 98% respectively). With the analysis of IR spectrum, UV spectrum and mass spectrum, the structure of FA was identifed as 8-C-D-glucopyranosyl-2- [2-hydroxy] propyl-5-methyl-7-hydroxychromone. Its scavenging activity on free radicals is higher than that of aloe-emodin. Its antioxidant activity may be due to the phenoxyl on glucosyl chromone which can be react with free radicals and form relatively stable free radicals.

本研究利用分别产生超氧阴离子自由基和羟自由基的化学模型体系研究比较了不同品种芦荟提取物的清除活性氧自由基的抗氧化作用，进一步利用硅胶柱结合薄层层析法和反相高压液相色谱法，从短叶芦荟叶子中首次分离了具有较强自由基清除能力（超氧阴离子自由基和羟自由基清除率分别为66.01％和38.98％）的成分FA，利用红外光谱、紫外光谱和质谱等仪器分析结果推断出该活性成分的分子结构为8-C-吡喃葡萄糖-2-[2-羟基]-丙基-5-甲基-7-羟基对氧萘酮，它的自由基清除能力高于芦荟大黄素，是一种天然抗氧化剂。

By this way,spectral angle is used to classify image as a feature.The experimental classification is carried out and the results show that the classific...

通过实验，并与最大似然法和光谱角匹配法分类结果进行比较，结果表明，结合光谱角的最大似然分类法的分类精度得到提高。

We found that the recording order of gratings with different periodicity made a crucial effect on the final forming of the microstructures. 4. Photo-induced birefringence phenomenons of P , containing mono azobenzene chromophore and P (MMA-co-GY7), containing diazobenzene chromophore were studied by static absorption and dynamic pump-probe techniques.

研究了单偶氮苯聚合物P、双偶氮苯聚合物P（MMA-co-GY7）的紫外-可见吸收光谱、荧光光谱，并对单偶氮苯、双偶氮苯聚合物材料光谱性能的差异进行了分析；研究了偶氮苯聚合物的超快光致双折射过程，并对单偶氮苯聚合物与双偶氮苯聚合物进行了比较，分析了含双偶氮聚合物超快光致双折射过程的来源。

Natively, first set up one laser-induced fluorescence remote sensing system, which has more complete function and is composed of modern detecting ability equipment including time-selected, spectrum fast received and interrelated detecting technology. Applying this system for detecting common monocyclic and polycyclic aromatic hydrocarbons'fluorescence spectrum. Have a preliminary research of classifying and distinguishing of the kinds of oil pollutants.

一、在国内首先建立了功能比较齐备，技术上采用了具有二十世纪九十年代特点的时间选通，光谱并行接收，相关探测等先进探测处理能力的荧光遥感模拟实验系统，利用该实验装置对常见的水面单环、多环、芳香族油污染物的荧光光谱进行了较系统的测试，并进行了分类识别的初步研究。

Raman spectrum of saturated aqueous solution of ammonium dimolybdate crystal was recorded, and compared with those of ammonium dimolybdate crystal , ammonium heptamolybdate crystal, saturated aqueous solution of ammonium heptamolybdate crystal and monomolybdate anion in aqueous solution respectively.

记录了常温下二钼酸铵晶体饱和水溶液的Raman光谱，并分别与二钼酸铵晶体、仲钼酸铵晶体、仲钼酸铵晶体饱和水溶液、水溶液状态下单钼酸根离子的Raman光谱进行了比较研究。

Applying the Large-scale multi-configuration Dirac-Fock wave functions, we calculated the parameters such as wavelength, oscillator strengths and excited energy for the transitions related to lightning spectra. The most important effects of relativity, correlation, and relaxation are included in the computational model. Comparison of the calculated results with experimental spectra shows that the spectra in plateau area have a distinctive characteristic. Beside the lines of lower excited state with n=3 in NII ions, transitions of NI and OI are increased, their excited energy is around 13~14eV, and there are rarely lines from OII ion.

将原子结构的理论应用於闪电光谱的研究，用多组态Dirac-Fock方法，计算了有关光谱线的波长、振子强度以及相应的激发态能量等参数，理论与试验观测资料进行比较分析后发现，高原地区闪电首次回击光谱的结构及跃迁特性与其他地区有明显的区别，除NII离子n=3的低激发态产生的跃迁谱线外，激发能量为13~14eV左右的中性NI和OI的跃迁增多，但很难观测到OII离子的跃迁谱线。

A pplying the Largescale multiconfiguration DiracFock wave functions, we cal culated the paramete rs such as wavelength, oscillator strengths and excited energy for the transitio ns related to lightning spectra. The most important effects of relativity, corre lation, and relaxation are included in the computational model. Comparison of th e calculated results with experimental spectra shows that the spectra in plateau area have a distinctive characteristic. Beside the lines of lower excited state with n=3 in NII ions, transitions of NI and OI are increased,their excited energy is around 13～14eV, and there are rarely lines from OII ion.

将原子结构的理论应用于闪电光谱的研究，用多组态DiracFock方法，计算了有关光谱线的波长、振子强度以及相应的激发态能量等参数，理论与试验观测资料进行比较分析后发现，高原地区闪电首次回击光谱的结构及跃迁特性与其他地区有明显的区别，除NII离子n=3 的低激发态产生的跃迁谱线外，激发能量为13～14eV左右的中性NI和OI的跃迁增多，但很难观测到OII离子的跃迁谱线。

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。