Proconvulsive effect of tea (Camellia sinensis) in mice.

Investigations were carried out to evaluate the effect of acute and chronic administration of both black and green tea on three models of experimentally induced convulsions in mice. Tea extract (both black and green) significantly accelerated the onset of convulsion, increased the duration of convulsion and mortality in mice. Since both the extracts failed to alter the GABA level in brain, based on the earlier report that both black and green tea might act on Ca(2+) channels, it can be suggested that the observed proconvulsive effect of tea is not mediated through GABA but through Ca(2+) channels. Copyright-Copyright 1999 John Wiley & Sons, Ltd.     

Effect of Carbon Black and Hybrid Steel-Polypropylene Fiber on the Mechanical and Self-Sensing Characteristics of Concrete Considering Different Coarse Aggregates’ Sizes

The effect of combining filler (carbon black) and fibrous materials (steel fiber and polypropylene fiber) with various sizes of coarse particles on the post-cracking behavior of conductive concrete was investigated in this study. Steel fibers (SF) and carbon black (CB) were added as monophasic, diphasic, and triphasic materials in the concrete to enhance the conductive properties of reinforced concrete. Polypropylene fiber (PP) was also added to steel fiber and carbon to improve the post-cracking behavior of concrete beams. This research mainly focused on the effects of macro fibers on toughness parameters and energy absorption capacity, as well as enhancing the self-sensing of multiple cracks and post-cracking behavior. Fractional changes in resistance and crack opening displacement (COD-FCR) and the relationship of load-deflection-FCR with different coarse aggregates of (5–10 mm and 15–20 mm) sizes were investigated, and the law of resistance signal changes with single and multiple cracking through load-time-FCR curves was explored. Results indicated that the smaller size coarse aggregates (5–10 mm) showed higher compressive strength: up to 8.3% and 14.83% with diphasic (SF + CB), respectively. The flexural strength of PC-10 increased 22.60 and 51.2%, respectively, with and without fibers, compared to PC-20. The diphasic and triphasic conductive material with the smaller size of aggregates (5–10 mm) increased the FCR values up to 38.95% and 42.21%, respectively, as compared to those of greater size coarse aggregates (15–20 mm). The hybrid uses of fibrous and filler materials improved post-cracking behavior as well as the self-sensing ability of reinforced concrete.     

耳穴贴压对化疗病人枢复宁使用剂量的影响

目的50例消化道肿瘤化疗病人的观察,探讨耳穴刺激对枢复宁使用剂量的影响。方法将病人随机分为两组,对照组常规化疗,化疗前静脉注射枢复宁8mg／d(基本剂量),化疗过程中由病人根据情况使用自控输液泵给予止吐药物,单次注射为4mg,时间间隔为2h,最大剂量40mg／d。耳压组药物使用同A组,但化疗前1日开始配合耳穴贴压,直至化疗结束。结果耳压组使用枢复宁剂量低于对照组,具有明显差异。结论耳压贴压有利于降低化疗病人的枢复宁使用剂量。     

黄振翘以冬令膏方调治血液病的经验

介绍黄振翘教授以冬令膏方调治血液病的经验。血液病的膏方调治适用于虚劳血虚、虚劳失血、虚劳相关证的各类慢性虚衰疾患以及急性疾患已进入缓解期者;用药重在调补脾肾,兼清伏邪、余邪;并论述了具体的辨证用药方法和注意事项。     

电针及电针配合耳穴贴压治疗单纯性肥胖症的临床疗效对比观察

目的:探讨比较电针及电针配合耳穴贴压两种疗法对单纯性肥胖症的临床疗效。方法:选取60例女性单纯性肥胖患者,随机分为电针组和电针配合耳穴贴压组两组,每组30例,分别用电针疗法和电针配合耳穴贴压疗法进行治疗。观察治疗前后体重指数、体脂百分比、腰围、臀围的变化,并评价减肥疗效。结果:60例患者治疗前后的体重指数、体脂百分比、腰围、臀围分值均显著下降,有极显著性差异(P0.01);且电针组和电针配合耳穴贴压组之间患者体重指数、体脂百分比、腰围、臀围的下降值有显著性差异(P0.05),电针配合耳穴贴压组下降幅度更显著。结论:单纯电针与电针配合耳穴贴压两种疗法对肥胖患者的体重指数、体脂百分比、腰围、臀围均有明显降低作用。并且电针配合耳穴贴压组患者在体重指数、体脂百分比、腰围、臀围分值的下降上更明显,说明综合疗法减肥疗效优于单一疗法。     

耳穴贴压减少2型糖尿病用药剂量临床观察

目的观察临床配合耳穴贴压疗法能否有效减少2型糖尿病的用药剂量,旨在验证耳穴贴压治疗糖尿病在社区内推广的可行性。方法选择门诊同时服用格列齐特缓释片（60mg/d）和二甲双胍（1g/d）药物的2型糖尿病患者70例,随机分为治疗组和对照组,治疗组将格列齐特缓释片的剂量减半（30mg/d）,配合耳穴贴压,测两组患者空腹血糖和餐后2h血糖与治疗前进行比较分析。结果配合耳穴贴压治疗后,治疗组患者空腹、餐后2h血糖与对照组比较差异无统计学意义（P〉0.05）。结论配合耳穴贴压治疗糖尿病可减少用药剂量,又能减轻患者的经济负担。     

针刺加耳穴贴压对混合痔术后镇痛的临床观察

目的观察针刺加耳穴贴压对混合痔术后的镇痛作用。方法选择混合痔术后要求镇痛（VAS在40～100mm）患者60例,随机分成治疗组和对照组各30例。治疗组采用针刺加耳穴贴压,对照组选用口服尼美舒利分散片。分别在治疗前和治疗后30min、2h、6h、首次排便时以VAS评估患者术后的疼痛水平。结果治疗后30min、6h、首次排便时两组存在非常显著性差异（P〈0．01）：2h时两组存在显著性差异（P〈0．05）。结论针刺加耳穴贴压可缓解混合痔术后疼痛,镇痛效果和持续性均优于口服尼美舒利分散片。     

毛细管气相色谱法测定伤痛宁膏中薄荷脑和水杨酸甲酯的含量

目的建立用气相色谱法同时测定伤痛宁膏中薄荷脑和水杨酸甲酯含量的方法。方法以正十五烷为内标物,DB-WAX弹性石英毛细管柱(30m×0.32mm,0.25μm),FID检测器,氮气为载气,柱温为130℃,检测器温度为200℃,分流比为12∶1。结果共测定了6批样品,在该色谱条件下,薄荷脑和水杨酸甲酯及内标物正十五烷均得到良好的分离。薄荷脑和水杨酸甲酯的加样回收率分别为101.52%(RSD=2.66%)、100.34%(RSD=3.38%)。结论本法灵敏、准确,重复性好,可用于控制该制剂的质量。     

黑米天然色素光降解的研究

目的探索黑米天然色素的光化学稳定性.方法用一定照度的可见及紫外光照对黑米色素样品进行照射,探讨其光降解机制.通过添加盐酸硫胺、L-胱氨酸和二氧化钛与对照溶液的光降解速率进行比较,确认这三种添加剂对黑米色素光降解的影响.结果黑米天然色素在白炽灯和高压汞灯照射下的光降解规律均符合浓度C=C.-kt的方程式.添加盐酸硫胺和L-胱氨酸,色素溶液的吸光度下降趋势趋缓;而添加二氧化钛则会使色素溶液的吸光度下降趋势增大.结论黑米色素的光降解符合零级动力学方程.     

正交法研究如意金黄贴剂的提取工艺

目的：研究如意金黄贴的最佳提取条件。方法：采用正交设计方法,以小檗碱含量和最低抑菌浓度为指标,以提取挥发油、醇浓度、提取时间为因子进行试验。结果：如意金黄贴剂的最佳提取条件是：提取时间为3h（第一次提取2h,第二次提取1h,醇浓度为90％。结论：优选得到的工艺稳定可行。