分子

The results indicate that the formation of clustering of aluminates in solution,and the clusters are stabilized by sodium ions.

结果表明：Al_4~-单体形成的&分子簇&有利于聚合铝酸根分子的形成，Na~+控制聚合铝酸根分子的稳定存在，从而影响铝酸钠溶液中Al_3的析出。

To optimize the reaction condition for the purpose of target compounds synthesis, the advance of 1,3-dipolar cycloaddition and click chemistry is reviewed. The conditions of the reaction between azides or nitrile oxides and terminal alkynes were optimized experimentally and the best operation condition was established.

以此为核心，以价廉易得的小分子原料通过数步反应，分别合成了异噁唑、三氮唑杂环取代(来源：29ABceC论文网www.abclunwen.com)的甲烷衍生物和三嗪联三氮唑杂环衍生物这两个比较有意义的小分子化合物库，达到了分子的多样化。

Results:Berberine inhibited HUVEC adhesion for lymphocyte when pretreated HUVEC and antagonised IL-1 and TNF-induced upregulation of HUVEC adhesion for lymphocyte.Meanwhile,IL-1-stimulated lymphocyte adhesion to HUVEC was diminished in the presence of berberine.The main molecular mechanism of berberines function may be downregulating the expression of ICAM-1 on the HUVEC .

结果：小檗碱能抑制静息的及IL-1、TNF激活的内皮细胞与淋巴细胞间的粘附，其主要分子机制为下调内皮细胞表面粘附分子ICAM-1的表达；小檗碱能抑制IL-1激活的淋巴细胞与内皮细胞的粘附，对淋巴细胞表面粘附分子CD18的表达无影响。

The hydroxyl oxygen atoms O(5) and O(6) with O(3) and O(4) of adjacent unit form the intermolecular hydrogen bondings.

分子中的酚羟基氧原子 O(5 )和 O(6 )均与另一个不对称单位的羰基氧原子 O(3 )和 O(4)形成了分子间氢键，这表明分子在晶胞内堆积时，除了范德华力以外还靠氢键来维系。

Even it seemed that such molecular compounds between an acid and a base were considered to easily crystallize by the formation of intermolecular hydrogen bondings or by the salt formation, the isolation of molecular crystals were not always successful.

虽然表面上看来，酸与碱很容易由于分子间的氢键作用或很容易由于盐的形成而得到双分子晶体，但是在实验过程中并不一定能够得到双分子晶体。

We Communists do not fear the struggle for democracy, because our positions are correct. Only Right opportunists who do not believe in the correctness of the Party's positions, in addition to careerists, corrupt bureaucrats and embezzlers , fear this struggle and are afraid that the masses should know the Party's true features.

我们共产党是不怕民主政治斗争的，因为我党的主张是正确的，只有那种不相信党的主张正确的右倾机会主义者，只有那种投机分子、官僚腐化分子、贪污分子，才惧怕民主政治斗争，惧怕把党的面貌放在群众面前。

With the assistance of the chaperons such as calnexin、calreticulin and tapasin,the molecular heavy chain andβ2 micro globulin of the major histocompatibility complexare assembled together to form the steady complex which is further transported to the surface of the APC through the Golgi body.

在calnexin、calreticulin、tapasin等分子伴侣的协助下，内质网腔内的主要相容性复合体(major histocompatibilitycomplex，MHC)Ⅰ类分子重链、β2微球蛋白以及相应多肽片段聚集成较为稳定的复合物，经高尔基体被进一步转运到APC表面；MHCⅠ类分子与抗原肽的有效结合是特异性细胞免疫应答的重要的环节。

In this thesis, two chemical structural models were constructed based on several structure parameters derived from FTIR and 13C NMR data, which were processed by curve-fitting and curve-resolved. Modified models were obtained by simulation oftheir molecular vibration spectra using Cerius 4.6/IR module andthe structural parameters from 13C NMR. Potential energy, bondenergy and non-bond energy of the minimum-energy conformations of coal macromolecules were calculated by molecular mechanics calculation and molecular dynamics simulation. These results demonstrate the importance of hydrogen bonding and van der Waals interactions in the formation and stabilization of coal macromolecular structure, and a strongest tendency of hydrogen bonding interactions to increase with the coal molecules but the Coulombs force.

本文运用煤结构的傅立叶红外光谱和固体核磁共振碳谱~(13C NMR测试方法所得的结果，经过谱图分峰、分析，计算出若干表征煤大分子结构参数，并综合前人的经验和共识，利用计算机分子绘图软件系统构建了表征两种褐煤的化学结构模型，在Cerius~2 4.6／IR模块中计算了分子振动红外光谱，同时结合碳谱所计算的分子结构参数拟合、修正了该结构模型，得到了能表征这两种煤样的分子结构模型，作为用分子动力学模拟和量子化学计算的初始结构模型。

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。

Results Bulbus alkaloids easily formed molecular ions(superscript + in MS and dimerized easily in alcohol solution, which did not dimerize in acidity solution. Collision induced dissociation made these alkaloids easily lose a molecule of H2O. The MS spectra of the extracts of five Bulbu Fritillartae species indicated that the major molecular ions were similar to each other, but different varieties showed very different relative abundances of these molecular ions.

结果 在正离子一级质谱中，贝母生物碱易形成带一个正电荷的准分子离子，并且在中性醇溶液中，贝母生物碱易形成二聚体，在酸性介质中则无此现象；二级碰撞诱导解离易使贝母生物碱脱去一分子水；5种贝母对照药材的总生物碱提取液的一级电喷雾质谱图显示，主要分子离子峰基本相同，但因品种不同相对丰度差异较大。

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。