天仙合剂对大鼠的利尿作用

天仙合剂是天仙藤,黑科豆等制成的中药制剂。ＳＤ大鼠为５组,分别给予蒸馏水,氢氯噻嗪０．２５ｇ／ｋｇ＾－１,天仙合剂３．２,６．５和１３．０ｇ．ｋｇ＾－１。给药后收订５ｈ液并采血测定尿Ｎａ＾＋、Ｋ＾＋和血清Ｎａ＾＋、Ｋ＾＋、Ｃｌ＾－浓度。     

加味四逆散长期毒性实验及安全性评价

目的通过长期毒性试验，观察加味四逆散对SD大鼠所发生的各种毒性反应，以评价加味四逆散的安全性。方法SD大鼠80只，雌雄各半，随机分为4组（空白对照组、加味四逆散高、中、低剂量组）每组各20只，三个用药组灌胃18w及停药2w后分别检测体重、血象、肝功、肾功、脏器系数及脏器组织病理。结果各给药组大鼠的血象、肝功、肾功、脏器系数分别与对照组相比差异无显著性意义（P〉0．05）。光镜下高剂量组大鼠心肌见嗜碱性变，心肌轻度充血，其余各组大鼠心脏结构清楚，肌纤维未见变性、坏死、断裂、心内外膜以及间质未见明显变化；停药2w后，各组动物脏器组织均正常，各给药组大鼠的血象、肝功、肾功、脏器系数分别与对照组相比差异无显著性意义（P〉0．05）。结论加味四逆散口服给药对正常大鼠的一般行为无明显影响，对大鼠肝脏、脾脏、肾脏、肺脏、子宫、卵巢、睾丸及肾上腺等组织无明显影响；长期高剂量口服给药对大鼠心脏有轻度的可逆性损伤；本实验表明加味四逆散停药后对大鼠无延迟毒性作用；对正常大鼠总体是基本安全的。     

Experimental characterization and Monte Carlo simulation of Si(Li) detector efficiency by radioactive sources and PIXE

This work relates to the study and characterization of the response function of an X-ray spectrometry system. The intrinsic efficiency of a Si(Li) detector has been simulated with the Monte Carlo codes MCNP and GEANT4 in the photon energy range of 2.6–59.5 keV. After finding it necessary to take a radiograph of the detector inside its cryostat to learn the correct dimensions, agreement within 10% between the simulations and experimental measurements with several point-like sources and PIXE results was obtained.     

思乐扣联合IV3000皮肤保护膜在先天性心脏病患儿中心静脉导管固定中的应用

[目的]探讨思乐扣联合IV3000皮肤保护膜在先天性心脏病患儿中心静脉导管固定中的应用效果。[方法]将136例先天性心脏病病人随机分为对照组和观察组,每组68例。对照组采用皮肤保护膜固定中心静脉导管,观察组采用思乐扣联合IV3000皮肤保护膜固定中心静脉导管,比较两组中心静脉导管脱出率、穿刺点接触性皮炎发生率和护理满意度。[结果]观察组中心静脉导管脱出率、穿刺点接触性皮炎发生率分别为4.41%和1.47%,低于对照组的23.53%和17.64%,观察组护理满意度为98.53%,高于对照组的85.29%,经比较差异均有统计学意义(P0.05)。[结论]思乐扣联合IV3000皮肤保护膜在中心静脉导管固定中应用可有效减少导管脱出,降低穿刺点接触性皮炎率,提高护理满意度。     

从《四部医典》看汉、藏医德学之渊源

《四部医典》是藏医学发展史上最伟大的成果之一,它辩证地吸收了汉、藏医学著作的精华,总结了藏医药的临床经验,与中医学有着密切的源流关系。其对医德学的论述与中医医德学思想之间也有着紧密的渊源关系,唐蕃和亲及文化交流和吐蕃统治者对医学发展的重视是二者渊源关系存在的主导性因素。     

Evaluation of the potential dependence of 2D–3D growth rates and structures of polypyrrole films in aqueous solutions of hexafluorates

Polypyrrole hexafluorosilicate, PPYSiF₆, and polypyrrole hexafluoroaluminate, PPYAlF₆, were found to follow the mixed 2DI–3DI kinetic model of electrodeposition in the potentials range (+0.80 V, +0.60 V) and (+0.95 V, +0.55 V) vs. SCE, respectively. The potentiostatic depositions of polypyrrole were performed on polycrystalline gold and on the single layer or bilayer polypyrrole films. Only in the case of the third layer deposition of PPYSiF₆ (on PPYSiF₆) at +0.6 V, the experimental current was found to fit better with the 2DP–3DI model. For electrodeposition of PPYAlF₆ on gold, a slightly better quality fitting with 2DP–3DP or 2DP–3DI kinetic models was observed only for some samples synthesized at 0.55 V. In general, contribution of the 2D structure in the polypyrrole deposits was observed to decrease with an increase of the polarization potential. Conclusions of the mathematical analysis of the current–time functions are in accordance with a texture of the outer surface of the polymer layers visible in SEM micrographs. The apparent rate constants of the lateral and outward growths of polypyrrole increase with potentials in (+0.55, +0.80) V range. Under assumption of the classical electrochemical kinetics law, the anodic transfer coefficients were found lower than 0.5. Values of the outward growth rate constant were of the order of 10⁻⁸–10⁻¹⁰ mol/(s cm²); being approximately one order of magnitude higher for polypyrrole hexafluorosilicate than for polypyrrole hexafluoroaluminate. The lateral growth rates of PPYAlF₆ on gold were found to depend on the electrodeposition potential more significantly than the outward growth rate. An increase in the growth rates with the potential was observed to diminish/vanish at E > +0.80 V, probably due to concurrent degradation processes of polypyrrole chains. The analysis of the deposition currents was done under conditions of the masking double layer currents that were characterized by the relaxation times of the order of seconds or longer.     

加味桃红四物汤对骨髓基质干细胞体外诱导的实验研究

目的研究加味桃红四物汤对骨髓基质干细胞早期促缺氧诱导因子（HIF-1）与血管内皮生长因子（VEGF）分泌的影响。方法骨髓基质干细胞取材,设置中药组及生理盐水组,观察HIF-1、VEGF表达。结果中药组对骨髓干细胞培养第2d HIF-1α表达量开始出现,第5、7天后中药组HIF-1α mRNA的表达量显著低于生理盐水组。而第3、5、7、14天VEGF表达中药组表达较生理盐水组强,在第5、7天VEGF表达达到峰值。结论加味桃红四物汤可以诱导骨髓基质干细胞向血管祖细胞分化,并促相关生长因子表达。     

集成便携式辅助诊疗系统是脉诊、舌诊研究走向临床的切入点

基于成熟的脉诊、舌诊信息提取与识别的关键技术,集成便携式辅助诊疗系统突出脉诊、舌诊在中医诊疗中的重要作用,并融合其他四诊信息,实现自动辨证处方的临床辅助诊疗功能。便携式辅助诊疗系统体现了"四诊合参"的中医辨证诊断理念,其便携化、智能化、人性化的特点贴合临床实际,为脉诊、舌诊研究成果的推广应用奠定了完备的条件。     

Structural and Electrochemical Investigation during the First Charging Cycles of Silicon Microwire Array Anodes for High Capacity Lithium Ion Batteries

Silicon microwire arrays embedded in Cu present exceptional performance as anode material in Li ion batteries. The processes occurring during the first charging cycles of batteries with this anode are essential for good performance. This paper sheds light on the electrochemical and structural properties of the anodes during the first charging cycles. Scanning Electron Microscopy, X-ray diffractommetry, and fast Fourier transformation impedance spectroscopy are used for the characterization. It was found that crystalline phases with high Li content are obtained after the first lithiation cycle, while for the second lithiation just crystalline phases with less Li are observable, indicating that the lithiated wires become amorphous upon cycling. The formation of a solid electrolyte interface of around 250 nm during the first lithiation cycle is evidenced, and is considered a necessary component for the good cycling performance of the wires. Analog to voltammetric techniques, impedance spectroscopy is confirmed as a powerful tool to identify the formation of the different Si-Li phases.     

眠尔康胶囊对小鼠睡眠的影响

目的　研究眠尔康胶囊对改善小鼠睡眠作用的影响。　方法　将小鼠随机分为溶剂对照组和眠尔康胶囊 40、80、2 40mg/kg3个剂量组 ,分别为A、B、C组共 4个组。通过延长戊巴比妥钠诱导的小鼠睡眠时间实验 ,观察眠尔康胶囊对戊巴比妥钠睡眠时间的延长作用 ;通过戊巴比妥钠阈下剂量催眠实验 ,观察给戊巴比妥钠 30min内各组动物睡眠发生率 ;通过戊巴比妥钠睡眠潜伏期实验 ,观察眠尔康胶囊对戊巴比妥钠睡眠潜伏期的影响。　结果　眠尔康胶囊连续灌胃小鼠 30d ,B、C剂量组小鼠睡眠时间明显延长 (P <0 .0 5 ) ,且睡眠发生率明显增加 (P <0 .0 5 ) ,睡眠潜伏期明显缩短 (P <0 .0 5 )。　结论　眠尔康胶囊有明显改善小鼠睡眠的作用。