多酸的

Phenotype-genotype analysis showed that both the penetrance and severity of phenotype correlate with expansion size.

HOXD13蛋白N端功能、多聚丙氨酸的作用及多聚丙氨酸延展突变的致病机制尚不十分清楚。

This part we introduce complexes synthesized by hydrothermal method containing inorganic polyacid, bipyrindine, organic polyacid, pyridine-carboyxlate, and mixed polyacid and polybase ligands.

我们分类介绍了，水热条件下合成的含无机的同多或杂多酸配体、联吡啶、有机多酸、吡啶羧酸和混合酸碱配体的配位化合物。

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。

Caproic acid is produced by the fermentation of caproic acid bacteria.In old pits,there is the"species－H2－transformation"between methane bacteria and caproic acid bacteria.

老窖中存在己酸菌与甲烷菌的&种间氢转移关系&，甲烷发酵有促进己酸发酵进程多产己酸的作用，从而增加己酸乙酯含量，提高酒质。

Both three-dimensional chiral compounds have intriguing chiral channels, which are built up of homochiral intertwined double helices. The circular dichroism spectra of 1 and 2 in water have shown they are stable in solution, which document they will be significantly useful in asymmetric catalysis and chiral medicine.

以Keggin结构多金属氧酸盐为建筑单元，通过手性的铜-脯氨酸配合物作为模板剂构筑了2个基于Keggin结构多金属氧酸盐的3D纯手性化合物，化合物1和2是一对对映体，代表了世界上第一例3D手性多酸化合物，具有由同手性螺旋缠绕形成的手性孔道，水溶液中的圆二色谱表征这个3D手性化合物可稳定存在，显示这个物种可以在不对称催化及手性药物方面有潜在的巨大的应用价值。

In this paper,we synthesized five new tungstosilicates clusters by using differert lacunary Keggin species in different pH values,temperatures under ambient conditions.

中文摘要：本论文中，在室温条件下，我们通过使用不同的多酸Keggin缺位片段、控制不同的PH值、反应温度、反应时间，合成得到五个新型多钨酸盐簇。

UV-Vis spectra show that the absorbance values at characteristic wavelengths of the multilayer films increase almost linearly with the number of chitosan/PTA bilayers, suggesting that the deposition process is regular and highly reproducible from layer to layer. XPS and FTIR spectra confirm the incorporation of chitosan and PTA into the films. AFM images indicate that the surface of the multilayer films is rough. The result of CV shows that the multiplayer films maintain good electrocatalytic activity of phosphotungstate acid.

UV-Vis结果显示多层膜在特征吸收峰处的吸光度数值随膜双层数增加逐渐增大，呈良好的线性关系，表明多层膜是均匀组装的；XPS和FTIR结果证实了壳聚糖和磷钨酸被组装到膜上，AFM图形显示膜表面有一定的粗糙度，CV结果说明多层膜保留了磷钨酸的电化学性质。

POMs and deys are still maintained integrallty.AFM exhibits the films is even.The thickness of each layer is about 1.25nm. The AFM images reflect that there are some protuberances on the outer surface layer of the film, which due to the aggregates of spherical structure PMo12. Cyclic Voltammograms reflects the redox potentials of dye in multilayer shifts towards more positive values than pure dye multiplayer which may be explained by charge transfer from dye to POM. Fluorescence spectra show that polyoxometalates caused the fluorescence decay of dyes, which maybe used as fluorescence sensors.

UV-VIS说明复合膜均匀生长； IR 光谱、XPS能谱研究结果表明，紫外光照前后，膜中多酸/染料分子间没有发生显著的光化学反应，各组分的结构仍然保持；原子力显微镜显示，膜的外表面是均匀的，每一个双层厚度大约是1.25nm，膜表面的隆起，可能是多酸阴离子簇堆积所引起；循环伏安测定结果表明，由于多酸阴离子的影响，有机染料的氧化还电位发生了正的偏移，反映出复合膜中染料分子与多酸阴离子间发生了荷移相互作用，导致染料分子失去部分电子而使氧化性略强；荧光光谱研究结果表明，多酸阴离子可以有效地引发荧光染料的荧光淬灭，这为多酸在荧光传感器方面的应用提供了有价值的信息。

There are some methods used commonly to immobilize POM on electrode surface, for example, electrodeposition of POMs on the electrode surface from a polyoxometalates solution under constant potential, self-assembly and layer-by-layer deposition, entrapment POM into polymers matrics and sol-gel method. There are some drawbacks using above methods.

杂多酸化学修饰电极主要有以下几个方法：恒电势下，多酸阴离子在电极表面的电沉积；多酸阴离子在电极表面的自吸附；聚电解质和多酸阴离子在电极表面的交替沉积；把多金属氧酸盐包埋在各种聚合物中；溶胶－凝胶法。

In this study, we used poly L-latcide, poly DL-latcide-co-glycolide 75:25 (PLGA7525) and poly DL-latcide-co-glycolide 50:50 (PLGA5050) during citric acid inducing ammonium bicarbonate gas forming process to form porous polymer film, and rolled the porous polymer film to make nerve conduits with pores and multi-layered. Electron Spectroscopy for Chemical Analyzer and Attenuated Total Reflectance – Fourier-Transform Infrared Spectrometer were employed for determining elements' functionabilities and chemical compounds. Charge Coupled Device camera and Scanning Electron Microscope were employed for macroscopic and microscopic morphologies and structural observation. Differential Scanning Calorimetry was employed for measuring glass-transition temperature. Nano-indentation system was employed for measuring elastic modulus and hardness. Biodegradation and water absorption ratios were measured to analyze their chemical properties and SEM was employed for microscopic morphology of the tested nerve conduit.

本研究将以聚乳酸、聚乳酸-聚甘醇酸共聚合物（75：25）、聚乳酸-聚甘醇酸共聚合物（50：50）做为研究材料，以柠檬酸诱发碳酸氢铵发泡之气泡成型法制作具有相连通孔隙之高分子薄膜，再将高分子薄膜卷制成特殊多层的导管，制作具有多层孔隙之新型神经再生导管，以电子能谱化学分析及减弱式全反射-傅立叶转换红外线光谱分析进行成份分析及化学元素测定；以电荷耦合元件摄影机、扫瞄式电子显微镜进行多层孔隙型神经导管巨观及微观形态结构观察；以示差扫瞄热量量测分析玻璃转换温度、奈米三维量测弹性模数及硬度；以及进行降解性质测定，并以扫瞄式电子显微镜进行降解后之导管微观结构形态观察。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。