Cathodes for fuel cells using proton-conducting Li2SO4–Al2O3 electrolyte

The performances of three widely different cathode materials (Pt, strontium-doped lanthanum manganite (LSM), and NiO) have been compared for use with proton conducting Li₂SO₄–Al₂O₃ composite electrolyte, using H₂S–air and H₂–air fuel cells operating at 600 °C. Surface analysis and electrochemical techniques were used to characterize fresh and used electrode materials. Pt or LSM cathodes each became covered with Li₂SO₄ and Al₂O₃ and, as a consequence, the fuel cells showed poor performance. In contrast, the NiO cathode catalyst did not become covered with Li₂SO₄ and good fuel cell performance was achieved. Exceptionally good current densities of over 100 mA/cm² and power densities of over 30 mW/cm² were obtained for H₂S–air fuel cells having Mo–Ni–S anode catalysts. Slight agglomeration of NiO particles during fuel cell operation had only a minor effect on performance.     

反相高效液相色谱法测定洛氟沙星的血药浓度

采用反相ＨＰＬＣ法测定洛氟沙星的血药浓度，血浆样品用二氯甲烷在ｐＨ７．０条件下提取后进样，流动相为１０ｍ ｍｏｌ／Ｌ磷酸二氢钾－１０ｍ ｍｏｌ／Ｌ溴化四丁铵－乙腈－三乙胺（４５：４４：１０：１，磷酸调节ｐＨ２．８），紫外检测器λ＝２９５ｎｍ，最低检测浓度１０μｇ／Ｌ，线性范围：０．１￣６．０ｍｇ／Ｌ，ｒ＝０．９９９９，日内ＲＳＤ为１．３８％￣３．４２％，日间ＲＳＤ为１．１１％￣２．８９％。     

法半夏罗汉果川贝枇杷膏与强力枇杷露药理作用的比较研究

法半夏罗汉果川贝枇把膏与强力批他露均有镇咳祛痰作用，罗汉果川贝枇把膏尚能平喘抗炎。     

Clinical observations on 278 cases of cervical spondylopathy treated with electroacupuncture and massotherapy.

From Dec. 1990 to Dec. 1993, 278 cases of cervical spondylopathy were treated with electroacupuncture and massotherapy. The cure rate was 82.7%; but in the control group, it was only 61%, indicating that electroacupuncture may enhance the cure rate (P < 0.05). Of the 278 cases treated by three to five sessions, the pain and numbness disappeared in about 96% of the patients.     

双氯芬酸钠滴眼液稳定性研究

采用高效液相色谱法测定双氯芬酸钠滴眼液的含量，方法简便，准确，能将药与杂质峰完全分离。应用化学动力学原理以恒温加试验预测双氯芬酸钠滴眼液稳定性及有效期，室温下有效期ｔ＾２５℃０．９约为２．５７年，与留样观察结果相符。     

LightCycler实时监测PCR定量分析血清HBV DNA

目的 检验LightCycler实时监测PCR（real-time detection PCR,RTD-PCR)对血清中HBV DNA定量检测的灵敏性和可重复性，探讨HBV血清标志物与HBV DNA定量的关系。方法 HBV定量按深圳匹基公司乙肝PCR荧光检测试剂盒使用说明，对乙肝标志物已明确的773例血清中HBV DNA定量结果进行统计分析。结果 实时监测PCR对血清中HBV DNA定量检测的灵敏性高，可检测低至1000拷贝／ml血清；可重复性好，批间误差＜20％；各种标志物类型的血清HBV DNA含量分布情况表明，HBV血清标志物中HBeAg与HBV DNA含量有明显的关系，一般HBeAg阳性血清HBV DNA含量较高，但也有相当一部分例外。结论 LightCycler实时监测PCR对血清中HBV DNA定量检测灵敏性高可重复性好；仅根据HBV血清标志物往往不能确定乙肝患者HBV DNA复制水平的高低，HBV DNA定量检测具有十分重要的临床意义。     

慢性放射性溃疡32例治疗体会

慢性放射性溃疡治疗难度较大，为寻求适当的治疗方案提高疗效，对既往病例进行了回顾。总结了自１９８３年以来，慢性放射性溃疡３２例的治疗经验，对发病原因、部位、病变特点及治疗方法作了分析。３１例治愈、创面Ｉ期愈合２６例，Ⅱ期愈合５例，死亡１例。认为须提高对放射溃疡的重视和认识，针对不同的病变部位，深度及其特点，采取不同的清创方法及相应的修复措施。为改善局部血循环，应以皮瓣或肌皮瓣治疗为首选。     

CT造影剂碘海醇注射液的制备及动物实验

本文报道了非离子型Ｘ－ＣＴ造影剂碘海醇注射液的制备及动物实验结果。磺海醇的最大吸收波长λ＿（ｍａｘ）为２４４ｎｍ。讨论了温度、浓度对磺海醇溶液粘度的影响：粘度随温度的升高而下降，呈负线型相关；粘度随浓度（Ｃ）升高而激剧升高，与浓度的四次方呈线性相关：Ｖ＿（３７℃）＝４７２．５８９［Ｃ］￣４＋１．１２１（ｒ＝０．９９７７）Ｖ＿（３０℃）＝６６３．８１３［Ｃ］￣４＋１．１５２（ｒ＝０．９９９６）Ｖ＿（２０℃）＝１０８２．９５３［Ｃ］￣４＋１．４３３（ｒ＝０．９９８２）使用该注射液进行狗的造影实验，获得了清晰的造影图像。