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- Keywords tungstic acid gel;orthorhombic tungsten oxide hydrate;hexag onal tungsten oxide;monoclinic tungsten oxide; 钨酸胶体;斜方晶钨氧水合物;六方晶钨氧化合物;单斜晶钨氧化合物;
- tungstic acid gel 钨酸凝胶
- OBJECTIVE To prepare compound benzoic acid gel and perform a stability study. 目的研制外用抗真菌药复方苯甲酸凝胶,并对制剂稳定性进行观察。
- Keywords tungstic acids gels;washing and centrifuging;microporous;specific surface area;photocatalytic;rare earths; 钨酸凝胶;超声洗涤;离心;微孔;比表面积;光催化;稀土;
- Synthesis of dimethyfumarate( DMF) was studied with easterification of fumaric acid and methanol catalyzed by supported phospho tungstic acid catalyst( PW12). 以富马酸和甲醇为原料,用滑石分子筛固载磷钨酸催化合成富马酸二甲酯。
- In 1958, Ganzhou Concentration Plant was established and started its production. After 1963, tungstic acid, APT, W powder, WC powder and cemented carbide could be produced too. 1958年，赣州精选厂建成投产。1963年以后，进一步发展到生产钨酸、钨酸钠、仲钨酸铵、钨粉、碳化钨粉、硬质合金等。
- This paper introduces the digestion technology of mechanical activation in lieu of that of alkali boiling for manufacturing tungstic acid. 本文介绍在复盐法生产钨酸中用机械活化浸取工艺代替碱煮浸取工艺的新方法。
- The WO3 electrochromic film prepared from this doped four- member tungstic acid sol had excellent performance and uniformity. 由该配方钨酸溶胶制的WO3电致变色薄膜材料的成膜均匀，性能优良。
- Alkaline silicic acid gel is used for water control in producing wells and profile control in water injection wells. 碱性硅酸凝胶多用于油井堵水或水井调剂。
- Objective To evaluate the efficacy and safety of 2% salicylic acid gel on treating acne vulgaris. 目的:观察2%25水杨酸凝胶治疗寻常痤疮的疗效和安全性。
- Monodispersed tungstic acid nanoparticles with an average diameter of 20 nm were prepared by a ultra-violet light irradiation of oxotungsten-citrate complex aqueous solution. 以磷钨酸为光催化剂,在紫外灯照射下,对甲基橙溶液进行光催化降解,考察了几种阴阳离子对磷钨酸光催化降解甲基橙溶液的影响。
- METHODS The Carbopol 940 was used as the base of gel and prepare the compound benzoic acid gel with regular method to mucosa. 方法以卡波姆-940为基质,用常规方法制备凝胶。
- A salt of tungstic acid. 钨酸盐钨酸的盐
- We are the mainly exporter of Tungstic acid in China, and the products enjoys the preferential treatment of “Quality Products without Inspection” offered by OSAKA Co., Ltd and JCQA Co., Ltd. in Japan. 公司生产的“石雁”牌仲钨酸铵、钨酸等产品获得“省部优级产品”、“福建省名牌产品”等称号，钨酸产品在国内是出口主要供货单位，享受日本 OSAKA 公司JCQA 公司“质量免检”待遇。
- Nitropyridine-N-oxide was synthesized with pyridine as original reactant through N-oxidation and nitration reactions, by using water as medium, tungstic acid and sulfuric acid as catalysts. 在N-氧化反应中,因用水作为反应介质,钨酸和硫酸为催化剂,不仅降低了反应成本,减少了环境污染,而且N-氧化吡啶的产率较高为96。
- Objective To study the effect of basic fibroblast growth factor (bFGF) and hyaluronic acid gel (HAG) combined with freeze dried bone allograft in repairing segmental bone defect and to explore their mechanism. 目的 探讨碱性成纤维细胞生长因子 (b FGF)和透明质酸凝胶 (HAG)复合异体冷冻干燥骨修复节段性骨缺损的能力及作用机制。
- Results:The Ginkgolic acids gel thus prepared was stable and a recovery rate of 96.87% and a RSD of 2.2% was obtained in its analysis. 结果:所得制剂性质稳定;含量测定平均加样回收率为96.;87%25;RSD值为2
- Methods:Ginkgoic acids gel was prepared by using ginkgolic acids as the main component and carbopol 940 as its base material.HPLC was adopted to control its quality. 方法:以银杏酸为主药、卡波普940为基质制备凝胶剂,采用高效液相色谱法测定制剂中银杏酸含量。
- The acid gelling of less additive can reduce leak in crack or hole and delay acid reaction to penetrating through farther. 研究出的低聚合物加量胶凝酸体系,降低酸液滤失,实现酸液缓速和深穿透的目的。
- Catalytic synthesis of glutaraldehyde with tungstic acid 钨酸均相催化法合成戊二醛
