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Compared with PF6P, the attachment of alkyl or alkoxyl groups on phenylene effectively inhibits the formation of fluorenone-based excimers and thus remarkably improves the thermal stability of the spectra.3. Morphology and phase behavior of the polymers substituted with alkyl and alkoxyl groups on phenylene were investigated by differential scanning calorimetry, X-ray diffraction and other techniques.

一方面，未取代的PF6P薄膜和烷氧基取代苯的PF60C6薄膜在空气中退火后都产生了芴酮结构，随退火温度的升高所生成的芴酮结构的含量逐渐增大；另一方面，新的长波发射随退火温度的升高其荧光寿命明显增加，因此确定PF6P空气退火薄膜的长波发射是来源于芴酮的激基缔合物。

Cytotoxic action on osteoclasts was significant at 10-1mol/l ～10-3mol/l fluorine, and acute cell death was found in 10-1mol/l and 10-2mol/l fluorine groups under phase-contrast photomicroscope. Inapparent changes were observed in 10-4mol/l～10-7mol/l fluorine groups.

倒置相差显微镜下10-1mol/L～10-3mol/L氟对破骨细胞呈现明显毒性反应。10-1mol/L、10-2mol/L可致破骨细胞急性死亡。10-4mol/L～10-7mol/L氟对破骨细胞形态的影响不明显。

Ointment extracted from Plastrum Testudinis was separated by silica gel column chromatography, gradiently eluted by petroleum ether-ethyl acetate, and 16 (Ts-1～Ts-16) components were obtained, which were biologically evaluated by MTT assay and flow cytometry on the proliferation of rat marrow-derived mesenchymal stem cells. Results showed that Ts-12 induced proliferation compared with the control group ( p ＜0.05), while Ts-4 showed inhibitive effect. Other groups showed no significance ( p ＞0.05). GC-MS was used to analyze the chemical components in different groups.

中药龟板提取物浸膏经硅胶柱层析，用石油醚-乙酸乙酯作洗脱剂，梯度洗脱，得到16个组分；采用MTT法和流式细胞技术研究了它们对鼠骨髓间充质干细胞的增殖作用，实验结果显示组分Ts-12具有促进rMSCs增殖的作用( p ＜0.05)，而组分Ts-4则表现出抑制rMSCs增殖的作用( p ＜0.05)，其它样品对rMSCs的增殖作用不显著( p ＞0.05)，不具统计学意义。

The major technique to get the information of structure of those free groups is to sudy the action of automorphisms on them. In this paper we show that every normal automorphism of a nontrivial free product of groups is inner as well. Traub[16] made a purely algebraic conjecture and showed that it implied Poincare"s Conjecture. He also showed that Poincare"s Conjecture implied this algebraic conjecture modulo another topological hypothesis.

在本文中我们给出任意两个非平凡群的自由积的每个正规自同构也是内自同构的；在文献[16]中，Traub给出了一个纯代数的猜想并证明了这个猜想蕴含着着庞加莱猜想的成立，并且作者也证明了在一个拓扑假设的前提下庞加莱猜想也同时蕴涵着猜想1是成立的，后来这个拓扑假设被Waldhausen([7])证明是成立的。

Those groups use more health care and cost insurers more than groups in which the average policyholder is young and healthy.

这些团体使用多个团体的医疗保健和保险费用，其中平均保单是年轻和健康。

The preparation process of self-holing polyimide with organosilicon block includes the following steps: 1 the first reaction of polyacid anhydride in functionality not lower than 2, silicon oil with 2 or more amino or imino groups and polyamine with 2 or more amino groups, and the second reaction with one or several kinds of added isocyanate with 2 or more isocyanate radicals to produce sol of polyamido acid containing organosilicon block; 2 solidifying the sol to obtain solid polyamido acid containing organosilicon block; and 3 imidonating the solid to obtain self-holing polyimide with organosilicon block.

本发明公开了一种有机硅嵌段自发孔聚酰亚胺的制备方法，该方法包括以下步骤：(1)有机溶剂中具有大于或者等于2的酸酐官能团度的多酸酐与具有大于或者等于2的胺基或亚胺基的硅油以及具有大于或者等于2的胺基的多胺反应，随后添加一种或多种具有含有等于或者大于2个异氰酸酯基的异氰酸酯反应，生成含有机硅嵌段聚酰胺酸的溶胶。(2)溶胶固化制成有机硅嵌段聚酰胺酸固体。(3)固体亚胺化，即得有机硅嵌段自发孔聚酰亚胺。

To observe the effect of bifidobacterium on plasma endotoxin NO and hemorheological characters in cirrhotic rats,we have detected plasma levels of endotoxin and No and index of hemorheology at the end 11th week after CCl4 administraation in preclusive groups and later treatment groups microecological preparation- bifidobacterium administraation.

结果显示，预防组血浆内毒素、NO水平及血液流变学多项参数明显低于肝硬化模型组（P＜0.05～0.of），与健康对照组相比，差异无显著性（P＞0.05），而晚期治疗组介于模型组与健康对照组之间。

Based on analysis of these conditions,the author discussed the procreative process of ethnic groups consciousness,mostly starting from cognition means of ethnic groups consciousness imagine d being possible,and the state manufacture.

安德森认为，时间认知的转变、认知手段的产生与社会条件的具备是族群作为一种想象共同体得以产生的基本条件。

Spore germination and protonema development have been considered to be one of the important characters in the phylogeny and evolution of major groups of the bryophytes and other plant groups.

孢子萌发与原丝体发育对于研究苔藓植物以及其他植物类群的系统发育与系统演化有着十分重要的作用。

Methods A total of 60 rats were employed and equally divided into 5 groups, i.e. control, HPH, hemin, Tin Protoporphyrin and low concentration CO groups.

60只Wistar大鼠随机分为5组：正常对照组；低氧肺动脉高压组；血晶素组；锡原卟啉组；低浓度CO组；每组12只。

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。