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头孢哌酮溶解性实验 被引量:3
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作者 汪庆海 《中国临床药学杂志》 CAS 1999年第4期248-249,共2页
头孢哌酮(cefoperazne,CPZ)属半合成第3代头孢菌素,临床疗效高,应用广.近年来关于CPZ 溶液稳定性资料较多,对影响CPZ 在输液中混浊沉淀现象.也有不少零星报道.笔者任选两个生产厂家的CPZ.测试了溶液pH值、温度、浓度、输液的种类、CPZ... 头孢哌酮(cefoperazne,CPZ)属半合成第3代头孢菌素,临床疗效高,应用广.近年来关于CPZ 溶液稳定性资料较多,对影响CPZ 在输液中混浊沉淀现象.也有不少零星报道.笔者任选两个生产厂家的CPZ.测试了溶液pH值、温度、浓度、输液的种类、CPZ浓度对溶液澄明度的影响.1 材料与方法1.1 药品与试剂 注射用头孢哌酮(CPZ I,上海第三制药厂,批号980806);注射用头孢哌酮(CPZⅡ,白云山制药总厂,批号980503);0.9%氯化钠注射液(安徽安庆制药厂,批号980905);5%葡萄糖氯化钠注射液(安徽朝阳制药厂,批号9804291);10%葡萄糖注射液(安徽朝阳制药厂,批号9805101);复方氯化钠注射液(安徽安庆制药厂,批号981005).0.05 mol/L.HCI,0.05 mol/L NaOH(自配).1.2 仪器25型酸度计(上海电冰箱厂);电热恒温箱(上海医疗器械七厂).1.3 实验方法 用不同输液分别配制1.2%、1.0%、0.8%的CPZ I、CPZⅡ的溶液.并各取适量测定其pH值.观察其澄明度的变化.2 结果2.1 温度对CPZ溶解度的影响 基本上呈直线下降关系(图 1).pH值越低,白浊色越深,粘度也增大. 展开更多
关键词 头孢哌酮 溶解性实验
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对中考科学试卷中“二氧化碳溶解性实验”的商榷和改进 被引量:1
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作者 魏海 马逸群 《教学仪器与实验》 2013年第12期39-41,共3页
通过实践验证和理论分析,指出2013年湖州市中考科学试卷中“二氧化碳溶解性实验”的设计存在科学性错误,并对该实验进行了成功的改进。
关键词 中考科学试卷 二氧化碳溶解性实验 商榷 改进
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基于创客教育的数字化实验设计——探究硫酸铜溶解性的影响因素
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作者 李奎 赵珍 张婷 《化学教与学》 2023年第23期49-52,共4页
将创客教育结合化学数字化实验,探究水的质量和温度对硫酸铜溶解性的影响,解决了教学中的重难点问题。实践表明,利用Arduino配合各类传感器进行化学实验,提高数字化实验设计的自由度,可降低数字化实验的应用成本,拓展数字化实验的应用场... 将创客教育结合化学数字化实验,探究水的质量和温度对硫酸铜溶解性的影响,解决了教学中的重难点问题。实践表明,利用Arduino配合各类传感器进行化学实验,提高数字化实验设计的自由度,可降低数字化实验的应用成本,拓展数字化实验的应用场景,有利于培养学生使用信息技术进行模型制作、工程设计的能力。 展开更多
关键词 溶解性数字化实验 创客
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超临界溶液快速膨胀制备灰黄霉素超细微粒的表征与溶解性研究 被引量:9
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作者 胡国勤 陈琪 邓修 《中国抗生素杂志》 CAS CSCD 北大核心 2010年第9期671-674,共4页
目的研究由超临界溶液快速膨胀法制备的灰黄霉素超细微粒的形貌特征及其在PBS缓冲溶液中的溶解性。方法采用光学显微镜、扫描电镜、差示扫描量热计、X射线衍射对超细微粒进行表征。结果所制备的灰黄霉素微粒平均直径在1μm左右,粒度均匀... 目的研究由超临界溶液快速膨胀法制备的灰黄霉素超细微粒的形貌特征及其在PBS缓冲溶液中的溶解性。方法采用光学显微镜、扫描电镜、差示扫描量热计、X射线衍射对超细微粒进行表征。结果所制备的灰黄霉素微粒平均直径在1μm左右,粒度均匀;其物理性质及结构没有明显变化;其溶解速率大且在2min后浓度达到最高。结论超临界溶液快速膨胀法可以用来制备药物超细微粒。 展开更多
关键词 灰黄霉素 微粒化 表征 溶解性实验
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H2 solubility and mass transfer in anthraquinone working solution: Experimental and modeling study 被引量:2
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作者 Zhigang Lei Yaru Guo +2 位作者 Yanyan Guo Xinxin Li Chengna Dai 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第2期143-148,共6页
This work was focused on the measurement of the solubility of hydrogen (H2) in anthraquinone working solution at temperatures of 30.0-80.0℃ and pressures of 0.2-3.0 MPa by the method of experimental and COSMO-RS mo... This work was focused on the measurement of the solubility of hydrogen (H2) in anthraquinone working solution at temperatures of 30.0-80.0℃ and pressures of 0.2-3.0 MPa by the method of experimental and COSMO-RS model study. The influence of various factors, i.e., including pressure, temperature and solvent volume ratio, on H2 solubility was investigated. According to the experimental results, H2 solubility in anthraquinone working solution increases with the increase of pressure. At low pressures, the temperature had little effect on H2 solubility while under high pressures H2 solubility increases with increasing temperature. Henry's constant In/-/has a good linear relationship with 1/T (lnH = -- 1319.1/T + 9.91 ). The effect of volume ratio of trioctyl phos- phate to trimethylbenzene on the solubility of hydrogen was studied and the results showed that increasing the amount of trimethylbenzene was conducive to the dissolution of hydrogen. In addition, there is a linear relationship between ln((Po - Pe) / (Pt - Pe)) and the time t. Gas-liquid mass transfer coefficient was obtained by calculating the slope of the line. 展开更多
关键词 HydrogenSolubilityAnthraquinone working solutionTrimethylbenzeneCOSMO-RS modelMass transfer
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The Fish Dissolved in Water: A Deleuze-Guattarian Experiment with Calvino
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作者 Cetin Balanuye 《Journal of Philosophy Study》 2012年第5期314-322,共9页
For Deleuze, the time of thinking in terms of"I" or "sell" has already ended. Novelists, according to Deleuze, have already recognized this. What these new novelists have realized is simply the way to elude contro... For Deleuze, the time of thinking in terms of"I" or "sell" has already ended. Novelists, according to Deleuze, have already recognized this. What these new novelists have realized is simply the way to elude control, a new intuition to develop unidentifiable means of resistance. Who are these novelists? What struggles have been made in their work for liberation? In what sense these fictions are revolutionary? And what does it mean to think as impersonal individuations? I argue, in this piece of work, that Italo Calvino is one of those novelists, in fictions of whom one might find truthful answers to most of the questions above and trace revolutionary insights of the kind Deleuze implicitly fosters. The ordinary characters or non-characters of Calvino function in a sense as a minor language operating through pages of the fiction. The fact that they are not in focus or not habitually actualized gives them power to resist representation. The elusive force running through the fiction might clearly be read as Deleuze-Guattarian body-without-organs. Accomplishing a reading of this kind requires a machinic thinking. What I attempt in this work is to try to perform such an experimental reading. 展开更多
关键词 impersonal individuations BECOMING molecular body-without-organs
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