氯酸

Experimental results showed that the relative average error of the proposed method, the hydrazine hydrate gravimetry and the ammonium chloroplatinate gravimetry is -0.14%~+0.13%,-0.21%~+0.21% and -0.13%~+0.14%, respectively, and the relative standard deviation of three methods is 0.05%~0.08%, 0.11%~0.14% and 0.08%~0.09%, respectively, for Pt content from 37% to 65%. Therefore, the accuracy and precision of the proposed method are almost the same with hydrazine hydrate gravimetry, and are a little better than ammonium chloroplatinate gravimetry. But it is rapid, economic, secure, easy to operate and environmental friendly.

结果表明：测定37%~65%的Pt含量，本法、氯铂酸氨重量法、水合肼还原重量法的相对平均误差分别为-0.14%~+0.13%、-0.21%~+0.21%、-0.13%~+0.14%，相对标准偏差分别为0.05%~0.08%、0.11%~0.14%、0.08%~0.09%，故本法的准确度和精密度与水合肼还原重量法的基本一致，较氯铂酸氨重量法的略好；但本法消解快速、节能、安全，操作简便，对环境污染程度小，适宜推广运用。

Gemini surfactant, sodium oleoylamidodiphenyl ether disulfonate was synthesized from p-nitrodiphenylether,oleoyl choride and chlorosulphonic acid through nitro-group reduction,acylation and sulphonation.

以对硝基二苯醚、油酸酰氯、氯磺酸为主要原料，通过硝基还原反应、胺基酰化反应、磺化反应，合成了双子表面活性剂油酸酰胺基二苯醚双磺酸钠；并用IR，1HNMR，MS对产品及中间体结构进行了表征。

Production technology of synthesis of allantoin are reviewed, including glyoxal oxidation, electrochemical synthesis, calcium glyoxylate synthesis, dichloroacetic acid synthesis, ace-tochloral method, and oxidative decarboxylation.

评述了乙二醛氧化法、化学法、醛酸钙法、素三氯乙醛合成法、酸二氯乙酸法和尿酸氧化脱羧法等合成尿囊素的各种工艺。

Methods: All the patients recruited were randomized into the diclofenac diethylamine salt gel and diclofenac sodium gel groups and treated with local application three times daily for 14 days respectively.

4 0例患者随机分为双氯芬酸二乙胺盐凝胶组和双氯芬酸钠凝胶组进行临床对照试验，分别采用局部涂擦给药法，tid ，14d为 1疗程。

The experimental group(28 cases) was injected Tc-MDP 5mg/days by vein and received Diclofenac Diethylamine Emulgel drug .

对照组（26例）常规采用非甾体抗炎药物双氯酚酸治疗，治疗组（28例）在服用双氯酚酸的同时静注 Tc-MDP（5mg/d）。40d后获取两组静脉抗凝血（3ml），分离出红细胞与血浆。

This dissertation is mainly focused on the reactivity of methylenecyclopropanes and comprises six parts. 1 The reactions of methylenecyclopropanes with phenylsulfenyl chloride, phenylselenyl chloride and diphenyl diselenide; 2 The coupling reactions of the ring-opening products derivated from methylenecyclopropanes; 3 The palladium-catalyzed ring-enlargement of mono-aryl group substituted methylenecyclopropanes to cyclobutenes. 4 The gold-catalyzed domino ring-opening and ring-closing hydroamination of methylenecyclopropanes with sulfonamides; 5 The Lewis acid-catalyzed reactions of mono-aryl group substituted methylenecyclopropanes with diethyl ketomalonate in the presence of water; 6 The iodobenzene diacetate mediated novel 1,3-dipolar cycloaddition of methylenecyclopropanes, vinylidenecyclopropanes, and methylenecyclobutane with phthalhydrazine.

本论文主要研究了亚甲基环丙烷类化合物的一些化学反应性能，共由以下六部分组成：1、亚甲基环丙烷类化合物与苯硫氯、苯硒氯及二苯基二硒的反应；2、亚甲基环丙烷类化合物开环产物的偶联反应；3、单芳基取代的亚甲基环丙烷类化合物在钯催化剂作用下的扩环反应；4、金化合物催化磺酰胺对亚甲基环丙烷类化合物的串联开环关环氨氢化反应；5、路易斯酸催化亚甲基环丙烷类化合物与丙酮二羧酸二乙酯在有水存在下的反应；6、醋酸碘苯促进的亚甲基环丙烷类化合物、亚乙烯基环丙烷类化合物及亚甲基环丁烷类化合物与邻苯二甲酰肼的新型1，3-偶极环加成反应。

Is a research and development, production, trade and service-based economy of foreign trade entities, chemical raw materials to the professional operation of the main company's existing production of AC blowing agent, ferric chloride, hydrated Hydrazine, p-nitrophenol, m-phenylenediamine, phosphorus trichloride, phosphorus oxychloride, 2,4 - diamino benzene sulfonate, sodium dichloro isocyanurate, N-methyl-o-phenylenediamine Second hydrochloride fine chemical products such as the ability, and are obtained ISO9001 international quality system certification.

济南华尔沃进出口贸易有限公司是一家集研发、生产、贸易、服务于一体的外贸型经济实体，以专业经营化工原料为主，公司现有生产AC发泡剂、三氯化铁、水合肼、对硝基苯酚、间苯二胺、三氯化磷、三氯氧磷、2，4—二氨基苯磺酸钠、二氯异氰脲酸钠、N-甲基邻苯二胺二盐酸盐等精细化工产品的能力，并且均以取得ISO9001国际质量体系认证。

It indicates that the raw materials can be stored in temperature of 0-4℃ for 60 days, they must be immersed in clean water for more than one hour before processing, and peeling be carried out in flowing water; that color preserving solution should be 1.0% NaCl+0.2% citric acid+0.5% Vitamin C+110ppm dichloro isocyanuric acid sodium; that combined browning inhibiting solution is conspicuously effective, and immersion time better be around 20 minutes; that sterilization solution ought to be 200ppm dichloro isocyanuric acid sodium+0.5% ascorbic acid+0.3 citric acid, and 10 minutes' immersion will achieve the effect of sterilization and inhibiting browning; and that after 20-21 minutes of quick-freezing in temperature of -31℃~-32℃, the products can be preserved under -18℃ for a whole year.

通过对速冻牛蒡加工过程中原料储存、削皮方法、护色、浸泡时间、无热杀菌、包装形式等参数进行研究表明：原料0-4℃可储存60天，加工前用清水浸泡1小时以上，削皮时在流水中进行，护色液筛选的1.0% NaCl＋0.2%柠檬酸＋0.5%维生素C十110ppm二氯异氰脲酸钠；复合褐变抑制溶液在抑制褐变方面有显著的效果，浸泡处理时间为20分钟为宜；杀菌液为200ppm二氯异氰脲酸钠＋0.5%抗坏血酸＋0.3柠檬酸，浸泡10分钟即可达到灭菌和抑制褐变的作用；经-31℃~-32℃温度下速冻20~21分钟，产品在-18℃条件下可储存一年。

Also discussed is the research direction for development of new phosgenated products ,important among them being IPDI isophorone diiso.

简述了光气化产品开发研究方向，提出重点开发IPDI、NDI (1，5 萘二异氰酸酯)、氯磺酰异氰酸酯和较大分子量的氯代甲酸酯等光气化产品。

Abstract］ Objective:To study the feasibility of selfmade microtitration in determining the contents of chlorphenamine maleate.

内容摘要：马来酸氯苯那敏；非水滴定；微型滴定［摘要］目的：研究利用自制微型滴定装置测定马来酸氯苯那敏含量的

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。