化合物

The change of Ortho chlorophenol and pyrocatechol, which were used as models of chlorophenol compounds and polyphenol compounds respectively during the electroanalysis process was also investigated in order to find degradation mechanism.

实验中以邻苯二酚和邻氯苯酚作为多酚类化合物、木素衍生物和氯酚类化合物的模型物，探讨了多酚类化合物和氯代酚在电化学处理过程中的降解机理。

If the laser is in ultraviolet-visible wave, photons activate choicely electron energy level or destroy weak bond of compound molecule, and result in chemistry reaction, which is photo leading decomposition mechanism, if the laser is in infrared wave, the chemistry reaction mainly is heat decomposition mechanism.

如果激光是可见紫外波段，光量子能量有利于选择性地激发分子的电子能级，或破坏化合物中弱键而诱导化学反应发生，化合物属于光致分解机理、引发弱键断裂机理；如果激光是红外波段，化合物表现的则是热分解机理。

It would be interesting to see the variation of physiological activity in the homologous series of choline esters.

在这系列化合物中，短链的化合物对神经系统的作用与乙醯胆碱相仿，但长链化合物却抑制了乙醯胆碱的作用。

The reaction of α-hydroxyketone with Michael acceptor nitroalkene.was studied. After many experiments, we then found that in the presence of Zn2 and cinchonine, the α-hydroxyketone could successfully react with nitroalkene. Under our optimized condition, we gained the 95% yield of product with the ratio of syn : anti of 3:1 and 72% ee value for syn-product.

有机碱作用下α－羟基酮对硝基烯烃的加成反应研究研究了α－羟基酮类化合物与Michael受体硝基烯烃类化合物的反应，通过分析和实验发现在Zn2和辛可宁的作用下α－羟基苯乙酮能够与硝基烯烃化合物顺利反应，在优化的条件下以95%产率和3：1的Dr主要得到顺式产物，其中顺式产物的ee值最高为72%。

According to the crystal structure of the n=1, 2 and 5 compounds, the structural principle of this family was proposed, which is based on alternate stacking of close-packed arrays and graphite-like sheets.

n=2和5化合物中的La也可以部分被其它稀土离子所取代，但相对于n=1化合物而言要困难一些，其中的La只能部分被取代，即使Nd和Sm也不能完全取代形成这两种结构类型的化合物。

Saponins and 1 glycoside possessed the inhibition on bone resorption and compound 21, the major compound of this fraction, showed the strongest activity among the glycosides. So it was supposed to do in vivo experiment in OVX mice.

在90％乙醇活性部位中，还分离到了6个新的甾体皂甙类化合物，其中spongioside E（19），连同已知皂甙类化合物7，21及葡萄糖甙类化合物27，显示了较强的抑制PTH诱导的小鼠颅骨骨吸收亢进活性。

Comparison the in vivo activity of 90％EtOH fraction and compound 21 with estradiol, indicated the 90％EtOH fraction behaved the stronger activity on total mineral content, total density, trabecular mineral content, trabecular density and the anti-twist strength of the proximal tibia in OVX rat than estradiol, but compound 21 displayed the weaker activity on total mineral content, total mineral density, trabecular mineral density, cortical mineral content, cortical mineral density, cortical thickness and the anti-twist strength of the proximal tibia than estradiol.

通过90％乙醇部位及化合物21都与阳性对照药雌二醇的纵向比较后，在大鼠OVX模型中，90％乙醇部位高剂量组在提高全骨的骨矿含量和骨密度、松质骨的骨矿含量和骨密度及骨的抗扭力方面，作用强于阳性对照组雌激素类化合物，化合物21在小鼠OVX模型中，抑制了全骨的骨矿含量、骨密度和全骨断面面积的降低，松质骨骨密度的降低，皮质骨的外膜周长的增长，皮质骨骨矿含量量、皮质骨厚度和皮质骨密度的下降及抗扭力的减弱。

"Inorganic compound Any substance in which two or more chemical elements other than carbon are combined, nearly always in definite proportions, as well as some compounds containing carbon but lacking carbon-carbon bonds (e.g., carbonates, cyanides)."

无机化合物：由两个或更多的碳以外的化学元素组成的化合物，几乎总是对称的，某些化合物含碳但缺少碳－碳化学键。

"Inorganic compound Any substance in which two or more chemical elements other than carbon are combined, nearly always in definite proportions, as well as some compounds containing carbon but lacking carbon-carbon bonds (e.g., carbonate s, cyanides)."

无机化合物：由两个或更多的碳以外的化学元素组成的化合物，几乎总是对称的，某些化合物含碳但缺少碳－碳化学键。

"Inorganic compound Any substance in which two or more chemical elements other than carbon are combined, nearly always in definite proportions, as well as some compounds containing carbon but lack ing carbon-carbon bonds (e.g., carbonates, cyanides)."

无机化合物：由两个或更多的碳以外的化学元素组成的化合物，几乎总是对称的，某些化合物含碳但缺少碳－碳化学键。

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。