钠

The research indicates that:(1) detecting λmax (277nm) can identify Metronidazole Buccal Tablets prepared by Chongqing Medical College;(2) detecting λmax (321nm) and λmin (265nm) can identify Metronidazole Disodium Phosphate for Injection prepared by Chongqing Medical College;(3) detecting tr (6.7min) in HPLC-UV spectrum can identify Ceftriaxone Sodium for Injection prepared by Chongqing Keru Pharmacy Co.;(4) detecting tR (10.2min) 6.7min in HPLC-UV spectrum can identify Clarithromycin Tablets prepared by Harebin Yida Pharmacy Co.;(5) detecting λmax (254nm) can identify Potassium Sodium Dehydroandroan Drographolide Succinate prepared by Hong Kong Yaohen Co..

结果表明：①测定紫外最大吸收波长λ_(max277nm可鉴别重庆医科大学医药研究所制备的甲硝唑口颊片；②测定紫外最大吸收波长λ_(max321nm和最小吸收波长λ_(min265nm可鉴别重庆医科大学医药研究所制备的注射用甲硝唑磷酸二钠；③测定HPLC-UV中的保留时间(t_R6.7min)可鉴别重庆科瑞制药股份有限公司制备的注射用头孢曲松钠；④测定高效液相色谱的保留时间(t_R10.2min)可鉴别哈尔滨伊达制药厂提供的克拉霉素片；⑤测定紫外最大吸收波长(又max254nm)可鉴别香港耀恒公司提供的炎琉宁。

It is a method most in use to analyze drugs.This paper chooses the antibiotics intending to be registered as research topics to study their identification, tests and assay by ultraviolet spectrophotometry. These antibiotics includes Metronidazole Buccal Tablets, Metronidazole Disodium Phosphate for Injection, Ceftriaxone Sodium for Injection, Clarithromycin Tablets, Potassium Sodium Dehydroandroan Drographolide Succinate.

本文选择拟注册的抗生素类药物甲硝唑口颊片、注射用甲硝唑磷酸二钠(Metronidazole Disodium Phosphate for Injection)、注射用头孢曲松钠(Ceftriaxone Sodium for Injection)、克拉霉素片和炎琥宁(Potassium Sodium Dehydroandroan Drographolide Succinate)为研究对象，应用紫外分光光度法进行鉴别、检查和含量测定研究。

The results of experiments and analysis shown that the clay mineral is mainly gerundive, montmorillonoid is little, but a great quantity of sodium-ion in gerundive soil and larger pH make the soil as well as montmorillonoid which is intense dispensability, These are two keys for the soil to disperse.

试验和分析结果表明，土样中的粘土矿物主要以伊利石为主，蒙脱石含量较少；伊利土中含有大量的钠离子，使得伊利土象钠蒙脱土一样具有强分散性；pH值较高，使得土壤颗粒之间的净势能表现为斥力，这也促使土样土样产生分散性。

A fluorimetric method is developed for the determination of cefotaxime sodium. The proposed method is based on the enhancive effect of cefotaxime sodium on the oxidation reaction of K2S2O8 for phloxine in neutral medium.

在过硫酸钾存在下的近中性介质中，头孢噻肟钠能够增强荧光桃红的荧光强度，从而建立了荧光法测定头孢噻肟钠含量的新方法。

Parisite is associated with secondary minerals, such as quartz, carbonate minerals, arfvedsonite, albite, chlorite, epidote and clay minerals and has intrinsic relation with reservoir.

氟碳钙铈矿常与石英、碳酸盐、钠铁闪石、钠长石、绿泥石、绿帘石、粘土矿物等次生矿物共生，并与天然气储层有着一种内在的联系。

DS and distribution of DS were improved. The optimized technology was gotten as follows: sodium borate was 8wt%,alkalization temperature 20 alkalization time 90min.The heat-resistance of CMC was also enhanced by adding sodium silicate in alkalization, and adding sodium borate in etherization in the synthesis of CMC. ra was decreased, but the viscosity was significant increased.

综合考 虑对水溶液粘度和取代度及其分布的影响，得到优化了的工艺配方：硅酸钠的加入量浙江人学硕士学位论文为纤维素的10叭%左右，碱化温度为20℃，碱化时间为90min，采用两次加碱法工艺(Zmol%和1 。1 smol%)，醚化阶段加6wt%的四硼酸钠。

The optimun technological conditions were studied on the synthesis of 9-flourenylmethanal by the reaction of flouren and ethyl formate , and the synthesis of 9-flourenylmethanol by the reaction of 9-flourenylmethanal and methanal with sodium ethylate as catalyst.

研究了乙醇钠为催化剂，由芴与甲酸乙酯合成芴甲醛，再由芴甲醛与甲醛合成苯甲醇的工艺条件，结果表明：合成芴甲醛时，当芴为 16g时，催化剂乙醇钠 4 。

After esterification, the ethyl-2-chloro-3-phenylpropionate reacts with diethyl malonate under the catalysis of sodium ethylate, and we obtain the corresponding triethyl ester. The-benzylsuccinic acid is formed by the triethyl ester reacting with concentrate hydrochloric acid and taking place hydrolyzation and decarboxylation reaction at the same time. In order to avoid the formation of cinnamic acid, the sodium ethylate and diethyl malonate must be react sufficiently. The course has simple operation, inexpensive materials and better yield.

具体制备工艺为：首先以L-苯丙氨酸为原料采用重氮化方法得到-2-氯-3-苯基丙酸，再经酯化得到-2-氯-3-苯基丙酸乙酯后在乙醇钠催化作用下和丙二酸二乙酯缩合，发生SN2反应，得到相应的三乙酯，然后经水解和脱羧，得到-苄基丁二酸；在实验中乙醇钠要和丙二酸二乙酯充分反应，避免生成肉桂酸乙酯；该过程操作简单，原料便宜，产率较高，总收率可达到26.8%。

Ingredients:Water,Hamamelis Virgin-iana Water,Glycerin,Olive Oil Peg-7 Esters,Gm Euglena Gracilis Polysaccharide,Betaine,Aloe Barb-adensis Leaf Juice,Hydrolyzed Wheat Protein,Sodium Pca,Tocopheryl Acetate,Polysorbate 20,Creatine,Hyaluronic Acid,Tetrasodium Edta,Perfume

成分：去离子水，金缕梅蒸馏液，甘油，橄榄油，PEG-7酯类，细小裸藻多糖，甜菜碱，芦荟叶提取物，水解小麦蛋白，吡咯烷酮羧酸钠，生育酚乙酸酯，聚山梨醇酯-20，肌酸，透明质酸，乙二胺四乙酸四钠，香精，苯氧乙醇，辛二醇，山梨酸。

Main Ingredients: Water,Hamamelis Virginiana Water,Glycerin,Propylene Glycol,Gm Euglena Gracilis Polysaccharide,Betaine,Aloe Barbadensis Leaf Juice,Hydrolyzed Wheat Protein,Sodium Pca,Tocopheryl Acetate,Polysorbate 20,Creatine,Hyaluronic Acid.

主要成分：去离子水，金缕梅蒸馏液，甘油，丙二醇，细小裸藻多糖，甜菜碱，芦荟叶提取物，水解小麦蛋白，吡咯烷酮羧酸钠，生育酚乙酸酯，聚山梨醇酯-20，肌酸，透明质酸，乙二胺四乙酸四钠，香精，苯氧乙醇，辛二醇，山梨酸。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。