结构体

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。

In the early 1980s, many researchers revealed the structure of cytoskeleton mainly on kinetosome in the cortex by the employment of protargol staining and ultrastructure method, and thus t.

20世纪80年代初，许多学者应用蛋白银染色方法和超微结构方法，显示了纤毛虫细胞皮层中以纤毛基体作为主成分的骨架结构，探讨了纤毛虫皮层纤毛器的形态、形态发生及其结构形成机理，在国内外原生动物细胞学领域成为主流。

A novel type of caged bicyclic phosphorous functionalized silsesquioxane was synthesized from caged bicyclic phosphorous quadridentate silicon complex in the presence of tetramethylammonium hy- droxide. The product was confirmed by FTIR, 29Si MAS NMR, MS and XRD spectra.

以双环笼状含磷四配位硅为前驱体，四甲基氢氧化铵为催化剂反应得到具有高度对称结构的双环笼状磷酸酯取代倍半硅氧烷，通过红外光谱，29Si固体核磁共振谱，质谱和X衍射光谱等手段确定了产物的结构和晶型。

Histological observation showed that normal structure was observed in all the groups before being harvested or after being preserved for 30 minutes. However, the more severe structure damage was observed in HPCs or hepatic sinusoidal cells with the more prolonged rewarm ischemia.

形态学观察发现，四组供肝于离体前及低温保存30分钟时的组织结构均无明显异常改变；而在复温缺血期间，各组供肝肝实质细胞及肝窦内皮细胞则表现有不同程度的结构损伤，且在程度上也与复温缺血时间呈明显的平行关系。

When the film was irradiated by electron beam, the rhombohedral structure was transformed into monoclinic structure.

电子束辐照后，LSMO薄膜从菱面体结构向单斜结构转变。

PMW-PT, PNW-PT and PMW-PNN-PT ceramics with pure perovskite structure were prepared by the Semichemical Method or the Hydrothemal-Derived Precursor Method.

采用半化学法或水热前驱体法制备了纯钙钛矿结构的PMW-PT、PNW-PT和PMW-PNN-PT基弛豫铁电陶瓷粉体，探讨了钙钛矿相陶瓷粉体的形成机理，系统研究了各种影响因素对粉体或陶瓷的相组成、显微结构和介电性能的影响。

The morphology structures in different parts of surface setae were observed and compared.And three typical categor...

同时，发现了龙虱体表存在的其他如波纹、鳞片等典型非光滑形态结构，测定了体壁水接触角，探讨了这些结构与水中运动减阻功能的关系。

Due to the key challenge for complicated techniques and preparation, there were few reports about ternary systems. A series of polyimide/SiO_2-TiO_2 hybrid films with different contents of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor in situ with sol-gel method and both phases in situ. Chemical structure and micro-morphology of hybrid films were studied by means of IR, SEM and XRD.

本文以正硅酸乙酯和钛酸四丁酯为前驱体，采用原位溶胶-凝胶法和两相原位同步法制备了一系列不同含量的聚酰亚胺/SiO_2-TiO_2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性、电击穿场强和耐电晕性。

A series of polyimide/SiO2-TiO2 hybrid films with different contents and weight ratio of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor by situ method. Chemical structure, micro-morphology and thermal stability of hybrid films was studied by means of SEM, IR and XRD, TGA was also tested.

以正硅酸乙酯和钛酸四丁酯为前驱体，采用两相原位同步法制备一系列不同含量及重量比的聚酰亚胺／SiO2-TiO2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性。

A series of polyimide/SiO2-TiO2 hybrid films with different contents and weight ratio of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor by situ method .

以正硅酸乙酯和钛酸四丁酯为前驱体，采用两相原位同步法制备一系列不同含量及重量比的聚酰亚胺/SiO2-TiO2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性。

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。