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矿物掺合料火山灰活性的研究 被引量:12
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作者 吕鹏 翟建平 +2 位作者 李琴 付晓茹 聂荣 《建筑材料学报》 EI CAS CSCD 2005年第3期289-293,共5页
采用强度试验法和酸碱溶出法对原状粉煤灰(FA)、磨细粉煤灰(PFA)、磨细无碱玻璃粉(PNG)和磨细石英粉(PQ)这4种矿物掺合料的火山灰活性进行了对比研究.结果表明:除PQ外,其余3种矿物掺合料火山灰活性的发挥程度均随养护龄期的延长而逐渐增... 采用强度试验法和酸碱溶出法对原状粉煤灰(FA)、磨细粉煤灰(PFA)、磨细无碱玻璃粉(PNG)和磨细石英粉(PQ)这4种矿物掺合料的火山灰活性进行了对比研究.结果表明:除PQ外,其余3种矿物掺合料火山灰活性的发挥程度均随养护龄期的延长而逐渐增加;4种矿物掺合料的火山灰活性顺序为:PNG>PFA>FA>PQ;在细度相近的情况下,矿物掺合料玻璃体含量高低和钙硅摩尔比大小是决定其火山灰活性的2个重要因素. 展开更多
关键词 矿物掺合料 火山灰活性 强度试验 酸碱溶出法
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Comparison of dissolution profile characteristics of 11 berberine hydrochloride tablet brands in different dissolution media 被引量:3
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作者 Fei Yu Wenli Zhou +1 位作者 Jiayi Kan Can Peng 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2020年第2期102-112,共11页
Berberine hydrochloride is commonly used to treat bacterial dysentery,gastroenteritis and other diseases.Many manufacturers are available on the market today,while the production process and formulation are quite diff... Berberine hydrochloride is commonly used to treat bacterial dysentery,gastroenteritis and other diseases.Many manufacturers are available on the market today,while the production process and formulation are quite different,which may directly affect the therapeutic effect of the drug.To this end,11 different production producers of berberine hydrochloride tablets were collected according to the pharmacopeia berberine hydrochloride dissolution method(basket method).In addition the dissolution process was carried out in four elution media with different pH,and the difference was similar(f2).Factors were calculated to evaluate in vitro dissolution requirements,and in vitro dissolution of different manufacturers of berberine hydrochloride tablets was determined by high performance liquid chromatography(HPLC).The method was verified by linearity,precision,stability and robustness.Based on the f2 value,there was a significant difference in the dissolution behavior of the formulations of most berberine hydrochloride tablet brands.This research provided the basis for further in-depth research in the later period.Although the drug specifications(0.1 g)were the same,the dissolution curve was different.This phenomenon may be attributed to the fact that the excipients and crystal form of the tablets affected the release and dissolution of the tablets in vitro. 展开更多
关键词 Berberine hydrochloride TABLET DISSOLUTION HPLC analysis Method validation In vitro test
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