发射光谱

In this paper, twenty novel meso-substituted porphyrins of four series were designed and synthesized by increasing the conjugation of porphyrins or introducing substituents with high fluorescence quantum yield into the meso-position of porphine, and then red OLEDs were fabricated by doping porphyrins into a suitable host using ten porphyrins compounds and their electrolumin -escence properties were tested. The main contents and results were generalized as follows:Three meso-tetrakisporphyrins 4a-c and three conjugations of porphine-triarylamine linked by styrene 10a-c were synthesized and characterized by 1H NMR, MS, UV-vis spectra and fluorescence emission spectra.

本文通过增大卟啉分子的共轭结构或将具有高荧光量子产率的基团连接到卟吩环的中位得到了四类共20个新型的卟啉化合物，并选取其中10个化合物制备有机发光器件来考察材料的电致发光性能，具体内容包括以下几个部分：设计合成了3个中位直接被三芳胺取代的卟啉化合物4a-c和3个通过苯乙烯连接的卟吩-三芳胺共轭体10a-c，通过核磁氢谱、质谱、紫外吸收光谱和荧光发射光谱表征了新化合物的结构。

The method has been applied to preconcentration, separation and determination of trace Pt and Pd in mineral samples.

方法用於矿石中微量铂、钯的富集分离和测定，结果与等离子体发射光谱法及推荐值相符。

The transmittance spectra and radioluminescence spectra at different positions along crys- tal growth orientation were measured and studied. The results show that the large size Y:PbWO4 crystal has good optical uniformity.

同时，对实验样品沿晶体生长方向不同部位的横向透过率及发射光谱进行了测试，结果表明，坩埚下降法生长的大尺寸Y：PbWO4晶体具有较好的光学均匀性。

Results of meausred radioluminescence spectra show that energy transfer mechanisms occurring from Gd3+ cations towards Tb3+ emssion centers as well as the cross relaxation among Tb3+ cations within the certain concentration range exert tremendous effects on the emission intensity of glasses.

Tb3+离子的掺杂浓度范围为1－5 mol %。玻璃样品的X射线激发发射光谱结果显示，发生在玻璃基质中由Gd3+离子向发光中心Tb3+离子的能量转移机制以及在一定浓度范围内Tb3+离子之间的交叉驰豫过程对玻璃的发光性能有重要影响。

The spectral properties of different mass percentages of the porphyrin (5, 10, 15, 20-tetra-p-tolyl-21H, 23H-porphine, TTP) doped poly [2-methoxy-5-(2'-ethylhexyloxy)-1, 4-phenylene vinylene] were studied by UV-Vis absorption and fluorescent emission spectra in this paper.

研究了不同质量浓度卟啉掺杂的MEH-PPV的紫外吸收和荧光发射光谱。

The femtosecond irradiation spectra was used to measure the radiation kinetics process. Fitted by the two exponent model, two time peaks were obtained, corresponding to the interband radiation and the surface defect radiation respectively. This results also strongly suggests that there are two relaxation pathways in the nanocomposite.

利用飞秒发射光谱观测凝胶玻璃中ZnSe纳米粒子发光动力学过程，采用双指数模型进行拟合，得到了两个时间组分：11.2ps和550ps，分别对应纳米品的带间发光和表面缺陷态发光，进一步证实了半导体纳米晶材料受激辐射的两种发光途径的存在。

Acidulated with HCl, the simultaneous determination of chromium, silicon, phosphorus was then achieved in the same sample solution by ICP-AES.

探讨了电感耦合等离子体原于发射光谱法测定锰铁合金中铬、硅、磷的分析条件。

The present dissertation deals with:(1) Exploring the feasibility of the CO〓 methanation and the conversion CH〓/H〓 into C〓 hydrocarbons under plasma with catalyst at ambient temperature and atmosphere.(2) Designing a reactor and preparing some catalysts suited for the conversion of carbon dioxide via the cooperation effect of plasma and catalysts.(3) Optimizing reaction conditions of conversion carbon dioxide to C〓 hydrocarbons in the proposed process.(4) Studying the reaction mechanism of conversion carbon dioxide to C〓 hydrocarbons under plasma by using in situ OES technology.(5) By the results of characterizing coked catalysts, exploring the reasons that result in the coking of catalyst and the paths for decreasing the deposit in the catalyst under plasma.(6) Analyzing the energy efficiency of the plasma catalysis and exploring the paths for improving the energy efficiency.

论文的主要研究工作包括：（1）探索脉冲电晕等离子体与催化剂共同作用CO〓／H〓甲烷化和由CH〓/H〓合成C〓烃反应的可行性；（2）研制等离子体催化CO〓转化的反应器和适配的催化剂；（3）优化等离子体催化CO〓转化制C〓烃反应的工艺条件和电参数；（4）利用原子发射光谱原位技术对等离子体反应的诊断结果，对等离子体催化CO〓转化制C〓烃反应的机理进行推断；（5）通过对积碳催化剂的表征结果，分析积碳的类型及其成因，并探讨减少积碳的途径；（6）通过对等离子体催化CO〓转化制C〓烃反应能量效率的分析，探讨提高等离子体催化反应能量效率的途径。

According to the actual characteristic of the TIG welding arc, the spectrum Stark broadening is used to analyze electron density and the dual linear spectrum is used to analyze arc temperature.

结合TIG焊接电弧的实际特点，本课题采用发射光谱的Stark展宽分析电弧电子密度，采用双线法分析电弧温度。

Methods Inductively Coupled Plasma Atomic Emission Spectrometry was used to determine the trace element in Semen Brassica Rapae,Semen Nigellae, Celery seed .

方法采用等离子体发射光谱法和原子吸收法测定了芜菁子、黑种草子及芹菜子中微量元素的含量。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。