极性的

ABSTRACT Objective To establish an HPLC method for the determination of azithromycin powder.Method The chromatographic conditions were as followed: C8 column, 0.045 mol/L ammonium phosphate monobasic solution∶acetonitrile (2∶1)(adjusted to pH7.35 with triethylamine) as mobile phase, temperature: 40℃, the flow rate: 1.0 ml/min, detection wavelength: 210nm.

阿奇霉素为氮杂内酯类抗生素，日抗基和《中国药典》2005年版［1］均采用微生物检定法测定其含量，《欧洲药典》4.6版和USP26版中均采用HPLC法，专属性较强，试验周期短，但均使用的是聚合物极性柱，《欧洲药典》柱温为70℃，USP采用电化学检测器，其采用的设备在我国药检部门尚未普及［2］。

Anhui Institute for Drug Control, Hefei 230051ABSTRACT Objective To establish an HPLC method for the determination of azithromycin powder.Method The chromatographic conditions were as followed: C8 column, 0.045 mol/L ammonium phosphate monobasic solution∶acetonitrile (2∶1)(adjusted to pH7.35 with triethylamine) as mobile phase, temperature: 40℃, the flow rate: 1.0 ml/min, detection wavelength: 210nm.

阿奇霉素为氮杂内酯类抗生素，日抗基和《中国药典》2005年版［1］均采用微生物检定法测定其含量，《欧洲药典》4.6版和USP26版中均采用HPLC法，专属性较强，试验周期短，但均使用的是聚合物极性柱，《欧洲药典》柱温为70℃，USP采用电化学检测器，其采用的设备在我国药检部门尚未普及［2］。

However, its electrical conducting properties prohibit its use with conventional monopolar TURP systems.

Issa医师指出，理论上，生理食盐水是TURP理想的灌洗溶液，然而，它的导电特性限制它使用於传统单极性TURP系统。

In the second part of work, a basic peptide with mass weight of 7597 Da was isolated and purified from the Naja naja atra venom .

论文的另一部分工作通过对眼镜蛇毒进行分离纯化，获得了一个&极性很强&的组分，通过蛋白测序和分子量测定，组分确定为一个弱神经毒素，该毒素二级结构稳定，神经毒性很低。

In this thesis, the relationship between the two mechanisms in the reactions of four coenzyme NADH models with two olefinic substrates is discussed in terms of Pross-Shaik treatment.

在我们所研究的反应中，电子转移机理—中间机理—极性机理，都能找到相应的实验证据。

There is a polarized organelle, Golgi complex consisted of several saccules and some vesicles beside the nucleus and there are some osmiophilic bodies beneath the parasite pellicule.

结果表明，配子体是一渐进发育的单核、惰性虫体，其核旁有一个由扁平囊和泡状小体极性排列组成的细胞器———高尔基体，虫体被膜下有嗜锇小体。

Their photophysical properties were investigated in solvents of different polarities by absorption and emission techniques.

研究了不同极性溶剂中这些化合物的分子内的光诱导电荷转移现象。

The photophysical properties of the monomers and homopolymers were studied in detail.

研究了单体及其聚合物在不同浓度、不同溶剂以及在聚合物薄膜中的激发和发射荧光光谱，考察了聚合物浓度、溶剂极性等对荧光的影响。

The orders Magnoliale, Laurales, Piperales, Illiciales, and Ranunculales were selected as a complex outgroup. The evolutionary polarity of each character was determined using the outgroup comparison method. On the basis of the character-coding matrix, the phylogenetic trees were constructed with Camin-Sokal method and Farris-Wagner method, implemented in PHYLIP package.

本文选取24个与睡莲类植物系统发育相关的形态、解剖和花粉性状，以木兰目、樟目、胡椒目、八角目和毛茛目作为复合外类群，采用外类群比较法判断了上述性状的进化极性；以性状状态编码矩阵为基础，应用Camin-Sokal方法和Farris-Wagner方法以及PHYLIP软件包构建分支树。

It is important that we should low carbon nanotubes's surface activity, eliminates its superficial electric charge, and weakens its surface polarly and so on.

主要是降低碳纳米管的表面能，消除其表面电荷，提高其与基体的亲和力，减弱其表面极性等。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。