浓度测定

A technique of simultaneous quantitative determination of sodium laurate and sodium dodecyl bezene sulfonate in mixed solutions is developed by using high performance liquid chromatorgraphy.

建立了用高效液相色谱法同时测定月桂酸钠和十二烷基苯磺酸钠浓度的方法。

By imitating different concentration of Cd2+ Cu2+ Cr3+ Cr6+and Zn2+polluted water environment,we mainly studied their toxic effects on aquatic piants by means of measurement of physiologicai indexes and electron microscopy observation as well as the relieving to Cu2+ injury of antioxidase enzyme system in Lemna minor L. and Vallisneria asiatica Miki in this paper by throwing Ce.the experimental results showed that Cd2+ Cu2+ Cr3+ Cr6+ and Zn2+ might injure photosynthetic systems, protective enzyme system, substance metabolism systems and cell ultrastructure of the plant.

本文通过模拟不同浓度梯度的重金属Cd~(2+)、Cu~(2+)、Cr~(3+)、Cr~(6+)和Zn~(2+)污染环境，利用生理生化测定、扫描电镜、透射电镜、气相色谱及激光共聚焦等实验手段，研究了四种金属离子对不同生态型的水生植物的毒害影响，初步探索了Ce对浮萍Cu害的缓解效应和La、Zn及其交互作用对浮萍活性氧清除系统影响。

It is the first time to establish the revered-phase HPLC method to determine concentrations of loganin and morroniside in plasma and to obtain their pharamacokinetic parameters and characteristics.

首次建立了山茱萸注射液中马钱素和莫诺苷血药浓度的HPLC测定方法，阐明了山茱萸中马钱素和莫诺苷的药代动力学参数，方法的专属性强，结果可靠。

Seed germination and seedling growth of Lolium perenne were improved observably, but at the higher concentration of Pb (500~2000 mg/kg), seed germination and seedling growth were restrained distinctly.

通过土培实验研究了在单－因素影响下，不同浓度的Pb对黑麦草种子萌发及幼苗生长的影响，同时测定了其抗性生理指标的改变以及地上部分和根系对Pb的富集作用。

We used neuron from Lymnaea stagnalis to determine how lidocaine affects in, Na-H exchanger, and in.

我们用椎实螺属神经元来测定利多卡因如何影响细胞内 PH 值、钠氢交换及细胞内钠离子浓度。

With the exosomatic MIC detection method and antibiosis efficiency detection method determined the common alimentary canal pathogenic bacteria,air tube pathogenic bacteria and mammitis pathogenic bacteria,respectively.

采用体外最小抑菌浓度MIC检测法和抗菌效率检测法分别对常见的消化道病原菌、呼吸道病原菌、乳房炎病原菌进行测定。

Finally, in chapter 7, a simple method for the determination of critical micellar concentrations of SDS in different media was proposed based on current-monitoring.

第七章建立了一种简单的利用电泳谱图上电流的变化测定表面活性剂SDS在不同介质中的临界胶束浓度的新方法。

No entire nitrendipine crystals were observed visually in SEM photos. The results of X-ray diffraction and differential scanning calorimetry analysis indicated that the crystalline form of nitrendipine was highly dispersed in microspheres, so as amorphous state. The drug release rate of microspheres could be controlled with adjusting the ratio of solid dispersion carriers and retarding agents formulated. The agitation speed and temperature of the preparation process have distinct effect on micromeritic properties of microspheres. The release profiles of the microspheres were mainly affected by the stirring rate of paddle, the concentration of SDS and pH of dissolution medium. Cooling speed and time, however, have no evident influence on the drug release rate of the microspheres. The dissolution data showed that the mechanism of drug release from microsphers was mainly diffusion-controlled. The incorporation efficiencies of 3 batches sample were exceed 96. 8％, which implied that the current method was suitable for design sustained-release dosage form for poorly water-soluble drug.

在扫描电子显微镜下观察，在微球内外未发现尼群地平的完整结晶，X-射线粉末衍射和差示扫描量热试验结果也显示，尼群地平已经被高度分散在微球中；微球的释药速度可通过调整处方中固体分散体载体和阻滞剂的比例控制；制备温度和搅拌速度对微球的质量影响较大；溶出仪的搅拌速度，释放介质的浓度和pH对微球的释放有较大的影响；制备过程中的冷却速度和冷却时间对微球的释放行为影响不很明显；方程拟合的结果表明缓释微球的释药行为符合扩散机制；测定三批微球样品的包封率均在96.8％以上，表明该法适合于制备难溶性药物的缓释微球。

Abstract］objectiveto observe antiseptic effect and bacteriostatic concentration in vitro of tieshanxuanyangping.methodsto determine bacteriostatic concentration in vitro for staphylococcus, bacillus coli, red trichophyton, purple trichophyton, trichophyton mentagrophytes, microsporum gypsen with doubling dilution.

摘要］目的观察&铁扇癣痒平&体外抗菌效果和抑菌浓度。方法采用对倍液体稀释法测定该药对金黄色葡萄球菌、大肠杆菌、红色毛癣菌、紫色毛癣菌、须毛癣菌和石膏样小孢子菌体外抑制作用。

METHODS:MICs of two drugs to Staphylococcus aureus were detected in vitro separately and mixedly with tube－dilution method.

用试管稀释法测定以上两药单用及合用时对金葡菌的体外最低抑菌浓度，并将达MIC试管内的金葡菌用电镜进行超微结构观察。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！