电化学共沉积制备有机高聚物/钙磷复合陶瓷膜层--Ⅱ XPS、SIMS表征及力学性能研究

通过电化学共沉积方法制备具有生物活性的有机高聚物／钙磷陶瓷复合膜层。用XPS、SIMS等对复合膜层的化学组分进行表征，证明少量有机高聚物可能在分子层次上掺杂形成有机高聚物／羟基磷灰石复合膜层。对电沉积HAP陶瓷膜层进行微刮痕实验表明，陶瓷膜层与金属基体的结合力得到显著改善。     

血液灌流对硫线磷和硫酸阿托品的吸附作用

Objective To study on adsorption effect of cadusafos and atropine sulfate by hemoperfusion.Method Hemoperfusions were performed for sheep blood samples with cadusafos and atropineby through imitated extracorporeal closed circulating perfusion apparatus.Residual cadusafos was determined by gas chromatography and residual atropine was determined by high performance liquid chromatography.Result Dose of adsorption agent was 0.5,1.0 and 1.5 g,respectively.Two hours after hemoperfusion with membrane coated activated charcoal,clearance rate of cadusafos in 3 groups all exceeded 90%.and clearance rate of atropine sulfate was 61.9%,84.9%,88.9%,respectively.One and a half hours after hemoperfusion with HA230 absorption resin,clearance rate of eadusafos in 3 groups all exceeded 90%,and clearance rate of atropine sulfate was 88.0%,97.2%,98.4%,respectively.Three hours after hemoperfusion with membrane coated activated charcoal,The concentration ratio of cadusafos and atropine sulfate in blood promoted to 10.1 times,and the ratio was 6.7 times after hemoperfusion with HA230 absorption resin.Conclusion It suggested that cadusafos were mostly removed from blood after 1.5～2.0hours hemoperfusion with membrane activated charcoal or HA230 absorption resin.The concentration ratio of cadusafos and atropine sulfate in blood will increased after hemoperfusion.     

血液灌流对硫线磷和硫酸阿托品的吸附作用

目的 定量研究血液灌流对有机磷农药硫线磷和其解毒药阿托品的吸附作用.方法 模拟临床血液灌流装置,对含硫线磷和硫酸阿托品的血样进行灌流吸附,分别用毛细管气相色谱法和高效液相色谱法测定硫线磷和硫酸阿托品的残留量.结果 吸附剂用量为0.5、1.0和1.5 g,包膜活性炭在灌流2.0 h后硫线磷的清除率均能达到90%以上,硫酸阿托品的清除率依次为61.9%、84.9%和88.9%;HA230树脂在灌流1.5 h后硫线磷清除率都达到90%以上,硫酸阿托品的清除率也依次高达88.0%、97.2%和98.4%;包膜活性炭灌流3.0h后,硫酸阿托品与硫线磷的比值最高为灌流前的10.1倍,而HA230树脂灌流后,此比值最高为灌流前的6.7倍.结论 包膜活性炭和HA230吸附树脂血液灌流1.5～2.0 h均能清除血中大部分硫线磷,而且均能增加血中硫酸阿托品和硫线磷浓度的比值.     

血液灌流对硫线磷和硫酸阿托品的吸附作用

Objective To study on adsorption effect of cadusafos and atropine sulfate by hemoperfusion.Method Hemoperfusions were performed for sheep blood samples with cadusafos and atropineby through imitated extracorporeal closed circulating perfusion apparatus.Residual cadusafos was determined by gas chromatography and residual atropine was determined by high performance liquid chromatography.Result Dose of adsorption agent was 0.5,1.0 and 1.5 g,respectively.Two hours after hemoperfusion with membrane coated activated charcoal,clearance rate of cadusafos in 3 groups all exceeded 90%.and clearance rate of atropine sulfate was 61.9%,84.9%,88.9%,respectively.One and a half hours after hemoperfusion with HA230 absorption resin,clearance rate of eadusafos in 3 groups all exceeded 90%,and clearance rate of atropine sulfate was 88.0%,97.2%,98.4%,respectively.Three hours after hemoperfusion with membrane coated activated charcoal,The concentration ratio of cadusafos and atropine sulfate in blood promoted to 10.1 times,and the ratio was 6.7 times after hemoperfusion with HA230 absorption resin.Conclusion It suggested that cadusafos were mostly removed from blood after 1.5～2.0hours hemoperfusion with membrane activated charcoal or HA230 absorption resin.The concentration ratio of cadusafos and atropine sulfate in blood will increased after hemoperfusion.     

多发性硬化的精神治疗

多发性硬化(MS)的病因及发病机制尚未明确,但大多数学者认为本病为免疫性疾病。多发性硬化病程长,常有缓解与复发,且常有不同程度的神经系统损害如偏瘫、肌张力增高、共济失调、构音障碍、痛性痉挛、括约肌功能障碍等,部分病人遗留有严重的神经功能障碍乃至残废。一些外界因素往往使病情恶化或促进MS复发,这些因素包括全身性或局部性感染、外伤、外科手术和麻醉以及环境过热等。所以MS的治疗一     

半枝莲中生物活性物质的提取及部分理化性质研究

半枝莲中生物活性物质主要为黄酮类化合物,本文利用正交实验对提取工艺的条件进行了研究,确定的最适工艺条件为：提取温度50℃、提取时间1h。通过对半枝莲提取物理化性黄酮苷质的鉴定,初步确定提取物中含黄酮类化合物,主要为黄酮苷类。     

两种国产皮下埋植剂避孕5年临床观察

为观察国产硅胶棒Ⅰ型与Ⅱ型皮下埋植剂避孕效果,自1994年1月至12月,我站施行皮下埋植剂避孕100例,其中Ⅰ型50例,Ⅱ型50例,各占50％,随访至1999年12月,随访98例,随访率为98％,现将两种避孕剂使用效果报道如下。     

问题引导与理论讲解是改进哲学课教学的重要途径

如何把问题引导与理论讲解有机地结合起来,是《马克思主义哲学原理》教学改革的重要组成部分。笔者结合教学实践从三个方面对该问题作了一些探索。     

重组人神经营养因子-4/5蛋白抗三氧化二砷神经毒作用

目的 :初步观察重组人神经营养因子 - 4/ 5 ( h NT- 4/ 5 )蛋白对三氧化二砷毒性的抑制作用。 方法 :利用 h NT- 4/ 5蛋白具有抗神经毒性的特点 ,采用本实验室克隆表达及部分纯化的具有天然 h NT- 4/ 5蛋白生物学活性的重组 h NT- 4/ 5蛋白 ,以不同水平的重组 h NT- 4/ 5蛋白 ( 0～ 10 0μl)与不同浓度的 As2 O3 ( 0～ 16 0μmol/ L )同时加入各组鸡胚前脑神经细胞和 PC12细胞培养液中共同孵育 2 4～ 48小时 ,观察其对染毒鸡胚前脑神经细胞存活和 PC12细胞突起生长的影响作用。 结果 :在鸡胚前脑神经细胞和 PC12细胞中与 As2 O3 共同培养 48小时后 ,对照组与实验组的细胞存活率差异有显著性 ,而且细胞存活率和突起数目随 h NT- 4/ 5浓度增高而提高和增加。 结论 :初步观察到重组 h NT- 4/ 5蛋白具有抑制 As2 O3 的毒性作用 ,为从基因工程途径寻找抗环境毒物因子提供了依据。     

中药紫株的化学成分研究

目的：研究紫株Callicarpa pedunculata R.Brown的化学成分。方法：利用各种色谱技术进行分离纯化,通过各种理化方法及光谱（IR,MS,^1HNMR,^13CNMR)分析鉴定其化学结构。结果：从紫株全草的氯仿提取物中分离得到10种化合物,分别鉴定为：4个二萜类化合物：14α－羟基－7,15－异松烷二烯－18烷酸（14α－hydroxy-7,15-isopimaradien-18-oic acid,Ⅰ）;16α,17-二羟基－3－氧－扁枝杉烷（16α,17-dihydroxy-3-oxo-phyllocladane,Ⅱ）;8,11,13,15-四烯松香烷－18－烷酸（8,11,13,15-abietatraen-18-oic acid,Ⅲ）;6α-羟基尼刀瑞尔醇（6α-hydroxy nidorellol,Ⅳ）;2个黄酮类化合物5－羟基－3,4‘,7-三甲氧基黄酮（5－hydroxy-3,4‘,7-trimethoxyflavone,Ⅴ）;3,5-二甲基莰非醇（3,5－dimethylkaempherol,Ⅵ）;其余的分别为：熊果酸（ursolic acid,Ⅶ）,肌醇（myoinositol, Ⅷ）,β-谷甾醇（β-sitosterol,Ⅸ）,β-香树素（β－amyrin, Ⅹ）。结论：化合物Ⅰ-Ⅵ为首次从该种植物中分离得到,且化合物Ⅰ-Ⅳ分别为4种不同类型的二萜。熊果酸的含量高达1％,本植物可作为其资源植物。