巴茱合剂治疗老年性痴呆肾虚髓减证36例

目的观察巴茱合剂治疗老年性痴呆肾虚髓减证的临床疗效。方法选取老年性痴呆肾虚髓减证患者74例随机分为治疗组36例和对照组38例。治疗组给予巴茱合剂口服,对照组给予金匮肾气丸配合银杏叶提取物片(金纳多)口服,疗程3个月。运用阿尔茨海默病评价量表-认知部分(ADAS-cog)、简易精神状态量表(MMSE)评价患者的智能,日常生活能力量表(ADL)评价患者的日常生活能力,中医证候疗效积分评价疗效。结果治疗组总有效率为88.9%,优于对照组71.1%,2组ADAS-cog评分、MMSE评分、ADL评分、中医证候疗效积分较治疗前均有所改善(P<0.05),且治疗组ADAS-cog评分、MMSE评分、中医证候疗效积分改善优于对照组(P<0.05)。2组治疗过程中未见不良反应发生。结论巴茱合剂能够改善老年性痴呆肾虚髓减证患者中医证候、智能及日常生活能力,未见不良反应发生。福建省科技重点项目(2012D064);; 厦门市中医药科研项目(wst201208);; 福建省中医科研课题(wzln201312

星系中心大质量黑洞及潮汐瓦解恒星事件

黑洞潮汐瓦解恒星事件(Tidal Disruption Events,TDE)是星系中心黑洞瓦解进入其潮汐瓦解半径内的恒星并吸积恒星碎片物质而产生的一种剧烈辐射耀发现象.TDE的能谱和光变特征中蕴含了中心黑洞和被瓦解的恒星的信息,为我们证实和普查宁静星系中的黑洞,研究其参数、吸积过程和喷流产生、以及核区星际介质等提供了可能.TDE还可能提供中等质量黑洞和双黑洞存在的证据.TDE的观测和理论已成为一个新开辟的天体物理研究领域,但目前的进展受制于探测到事件太少(尤其是在X射线波段),且观测数据普遍质量不高.TDE的发生率很低,要探测大样本的事例需要监测足够大的空间体积.爱因斯坦探针卫星(Einstein Probe,EP)覆盖了0.5–4 keV的软X射线波段(接近TDE耀发时的辐射峰值能段),具有大视场以及高灵敏度,非常利于对TDE的探测.预期爱因斯坦探针卫星每年可以发现约几十至上百例TDE,其中有约10例或更多具有相对论性喷流特征.这将使我们可以获得较为完备、具有统计意义的TDE的样本,为进一步研究黑洞的存在和统计性质、增长和演化、发现中等质量黑洞和大质量双黑洞等提供了新的途径.中国科学院空间科学战略性先导科技专项(编号:XDA15052100);;北京大学“985工程”建设项目“星团环境对双黑洞形成演化过程的干扰及其对引力波探测的影响”资

借助相变材料的能量转换系统和方法

本公开提供了一种能量转换系统和方法，用于在没有任何外部电源的情况下，通过铁电材料的相变直接从热能产生电能。能量转换系统包括电路，该电路包括相变电容器和电荷储存器。相变电容器具有包含相变铁电材料的介电层。当相变电容器初始化并且受到跨过相变铁电材料的相变温度的热循环时，介电层的极化强度在铁电相和顺电相之间产生突变，从而使得电流在相变电容器和电荷储存器之间通过负载流动，进而将热能转换为电能。本能量转换方法在能量转换过程中不需要任何外部偏置电场

润滑油水污染对齿轮热弹流润滑特性的影响研究

以渐开线直齿圆柱齿轮为研究对象，考虑热效应和时变效应，建立油水两相流模型和齿轮的热弹流润滑模型，探究了润滑油中含水率对油水两相流体的黏度及齿面润滑特性的影响。研究结果表明，润滑油中混入冷却水后，当含水率不超过5%时，随着含水率的增加，油水两相流体的黏度不断增大；含水率为5%时，油水两相流体的黏度达到其峰值，之后随着含水率的增加，油水两相流体的黏度不断减小。适当增加含水率可改善齿面的润滑特性，但考虑油膜温升及对设备的腐蚀磨损，应将含水率控制在5%以内

聚乳酸共混物立构复合物的形成及其结构性能研究进展

聚乳酸立构复合物(SC-PLA)由左旋聚乳酸(PLLA)和右旋聚乳酸(PDLA)以31螺旋构象并排堆砌而成,由于分子链间的紧密堆积,SC-PLA具有更高的晶体稳定性、熔点(约比PLLA高50℃)以及良好的热、力学、降解等性能。PLLA和PDLA共混是目前制备SC-PLA的一类常用方法,包括溶液共混、熔融共混、微波辐射共混等,SC-PLA在形成过程中会受到PLLA和PDLA的分子量、光学纯度、混合比例等因素影响。本文综述了PLLA和PDLA通过共混形成SC-PLA的条件和机理,以及SC-PLA的微观结构、性能和应用现状

Detection and analysis on the secretions of Oncomelania hupensis snails dually infected by larval Exorchis mupingensis and Schistosoma japonicum at different intervals

观察被目平外睾吸虫和日本血吸虫双重感染钉螺后钉螺体内外分泌物及其血吸虫幼虫被击毁的关系。方法观察钉螺感染外睾吸虫21d、37d、55d、70d和85d后再感染血吸虫,经4~82d后,取钉螺软体组织作埋蜡连续染色制片。结果与结论无论单独感染目平外睾吸虫或两种吸虫双重感染,均可在螺软体发现多种分泌物,随时间延长分泌物数量逐渐增多。螺体内含小细胞核的分泌物和螺副腺细胞都出现在各时期的血吸虫残骸体内。The attack degrees on larval S.japonicumin O.hupensis snails dually infected by Exorchis mupingensis and S.japonicum with longer intervals were stronger than that of shorter intervals,and snail haemo-lymphocytes numbers were more few in that of shorter intervals.Present experiment would like to observe how about the actions of secretions of O.hupensis with different intervals took place to the larval S.japonicum wreckages.To examine snails' secretion status,all experimental snails were processed by paraffin-embedding methods,sectioned and stained with hemotoxilin and eosin;sectioned snails were examined using light microscopy.Although the numbers of 3species hemo-lymphocytes were fewer in O.hupensis snails dually infected with longer intervals than that of shorter intervals,the secretions of snails were thicker and more in O.hupensis snails dually infected with longer intervals than that of shorter intervals.How about the effect of snail's secretions on the S.japonicumlarvae and how about the change of snail's immunological defencing system in O.hupensis snails dually infected by Exorchis spp.and Schistosoma japonicum require more detailed further investigation.国家自然科学基金(No.31270938)资助~

Cavitation Erosion Behavior of Ni-Al Intermetallic Coatings

　采用3种原子百分比Ni52Al48,Ni60Al40及Ni70Al30成分的靶材以阴极电弧放电离子被覆技术制备不同组成的Ni＿Al薄膜于AISI1045中碳钢基材表面上,并观察镀膜微结构与成分随靶材成分的变化,评估应用Ni＿Al于抗坑蚀功能方面的可行性.研究结果显示:使用上述3种靶材所获致的镀膜组成依次为Ni62Al38,Ni63Al37及Ni69Al31,镀膜镍含量随靶材镍含量增加而增加.3种镀膜的相组成均以Ni3Al为主,从富镍Ni70Al30靶材所得的镀膜尚含有部分镍相.镀膜具有极强的附着性并反映在镀膜的抗坑蚀性上.在纯水中,所有的Ni＿Al镀膜试片均能提高中碳钢基材的抗坑蚀性,约达10倍.在3.5wt%盐水与3.5wt%盐酸中亦分别有两倍以上的效果.而在这3种测试环境中,3种镀膜试片的坑蚀损失差别均不明显,无法判断镀膜组成对抗坑蚀性的影响.从动电位极化曲线可以看出,镀膜试片均能大幅提高基材在盐酸与盐水溶液中的抗蚀性,然而因坑蚀破坏而形成的孔洞会由于孔蚀而导致腐蚀加剧,造成镀膜试片在腐蚀溶液中之抗坑蚀效果低于电化学量测时所预期的保护效果.A cathodic arc plasma ion plating process was demonstrated to deposit Ni_Al film on AISI 1045 carbon steel to evaluate the cavitation protection. Three target materials with Ni52Al48, Ni60Al40, and Ni70Al30 compositions were used to reveal the microstructural of coatings. Experimental results show that the nickel content in these deposits increased with the nickel content of the target material. The major phase of deposited film was Ni3Al regardless of the target materials. All of the as_deposited films presented very strong adhesion and reflects their cavitation erosion behavior in fresh water. All coatings increased the cavitation erosion resistance of the bare substrate 10 fold. These coatings also enhanced the cavitation resistance 2_fold or greater in 3.5 wt.% NaCl and 3_fold in 3.5 wt.% HCl electrolyte. The potentiodynamic polarization data of coated specimens in these two electrolytes indicated that the coated specimens exhibited higher corrosion potential and lower corrosion current density than the bare substrate material. It is believed that the cavitation erosion induced pitting corrosion into the substrate accelerated the mass loss rate of the substrate.作者联系地址：逢甲大学材料科学系电浆工程研究室,逢甲大学材料科学系电浆工程研究室,逢甲大学材料科学系电浆工程研究室,逢甲大学材料科学系电浆工程研究室 台湾台中 ,台湾台中 ,台湾台中 ,台湾台中Author's Address: Plasma Engineering Lab, Department of Materials Science,Feng Chia University Taizhong, Chin