单用表阿霉素缓释剂及联合表阿霉素游离剂腹腔化疗治疗肝癌的疗效

目的观察单用表阿霉素(EPI)聚乳酸(PLA)缓释微球(MS)及联合游离表阿霉素(FEPI)腹腔化疗治疗肝癌的疗效。方法将35只H22腹水型肝癌荷瘤小鼠分为7组,每组5只,分别予空白微球,生理盐水,低、中、高剂量载药微球(分别含EPI 9、18、36 mg/kg),FEPI(9 mg/kg)和EPI-PLA-MS+FEPI(各含EPI 4.5 mg/kg),经腹腔注射给药,计算动物生命延长率。结果EPI-PLA-MS能有效延长荷瘤鼠的生存时间,并呈量效关系,小鼠最大耐受量约为18~36 mg/kg。联合用药组的平均生存时间、中位生存时间和生命延长率均达到最高值,分别为(40.0±16.9)d、33.5 d和222.58%。结论EPI-PLA-MS缓释剂与游离剂型联合腹腔化疗是一种新型、高效的给药方式,可有效治疗肝癌

基于深度学习的金免疫层析试条定量检测方法

为解决免疫层析试条定量检测问题,搭建了基于深度置信网络和反向传播神经网络构成的深度学习模型。基于免疫层析试条图像的特点,搭建的模型通过学习本文提出的图像灰度特征、距离特征以及差分特征实现准确的图像分割。最后,对分割的图像进行定量分析实现最终的定量检测。实验结果表明,本文提出的方法能够实现免疫层析定量检测。国家自然科学基金(项目编号:61403319);;福建省自然科学基金(项目编号:2015J05131

Treatment of Hepatocellular Carcinoma in Mice with Locally Administered Epirubicin-loaded Poly(D,L)-lactic Acid Microspheres

[中文文摘]目的研究表柔比星-聚乳酸缓释微球(EPI-PLA-MS)局部给药治疗肝癌的效果。方法复乳-溶剂挥发法制备EPI-PLA-MS。将40只昆明小鼠随机分为5组,每组8只,分别腹腔注射不同剂量的游离表柔比星(FEPI),计算最大耐受量(MTD)。H22皮下实体瘤肝癌荷瘤小鼠3组,每组5只,分别用生理盐水(normalsaline,NS)、空白微球和含药微球(含EPI9mg/kg)瘤内注射给药,2周后取瘤称重。H22腹水型肝癌荷瘤小鼠3组,每组5只,分别用NS、空白微球和含药微球(含EPI9mg/kg)腹腔注射给药,计算动物生命延长率。结果FEPI腹腔注射的MTD为9mg/kg。EPI-PLA-MS瘤内给药后含药微球组和空白微球组的抑瘤率分别为40.35%和36.09%。腹腔给药后能显著延长荷瘤鼠的生存时间,含药微球组和空白微球组生命延长率分别为153.49%和142.22%。结论EPI-PLA-MS是一种有效低毒的药物新剂型,在局部治疗肝癌方面具有良好的临床应用前景。[英文文摘]Objective To study the effectiveness of treating hepatocellular carcinoma(HCC)in mice with locally administered epirubicin-loaded poly(D,L)-lactic acid microspheres(EPI-PLA-MS).Methods EPI-PLA-MS was prepared with double emulsion solvent evaporation technique.Five groups of mice(n=8 in each group)were intraperitoneally injected with five different doses of free epirubicin(FEPI),and the maximum tolerated dose(MTD)was calculated.Then 15 mice with transplanted subcutaneous H 22 HCC were divided into three group s ( n = 5) , which were respectively intratumorally injected with normal saline (NS) , blank micro-spheres, and EPI-PLA-MS (with 9mg/kg of EPI) 1 After two weeks the tumorswere excised and weighed1 Another 15 mice with transp lanted H22 ascites HCC were divided into three groups (n=5) , which were intraperitonealy injected with the same drugs, and the increased life span were registered exactly1 Resutls　TheMTD of intraperito neally injected FEPIwas 9mg/kg1 The tumour inhibiting rateswas 40135% and 36109% when EPI-PLA-MS were administered by intratumoral injection to the mice with subcutaneous H22 HCC1 It significantly p rolonged the survival time of mice with H22 ascites HCC and the increased life span by 153149% and 142122% when EPI-PLA-MS were intraperitoneally administered1 Conclusion　EPI-PLA-MS is a new sustained release preparation with high-ef-ficacy and low-toxicity in treating HCC and has shown promising prospects when administerd locally

TCP传输模式下高并发无线流媒体的控制与播放服务器的研究

针对流媒体服务高并发的要求,以及无线网络高误码率的特点,设计了一个采用TCP传输的"集中—分布式"无线流媒体服务器系统,并对设计进行了理论分析和实践检验,测试结果证明,该设计架构合理,可扩展性好,并发性能高,传输质量较为可靠,能够很好满足一类无线流媒体应用的需求

圆柱形波浪能吸收体水动力学分析与优化设计

以波能装置中单个圆柱形浮体在线性入射波作用下的垂荡问题为研究对象，采用特征函数展开法求解辐射和绕射势的定解问题，对线性水波作用下的单圆柱形浮体的水动力学特性进行分析，包括水动力学系数和波浪激励力。分析过程中应用了分离变量法和扩展特征函数匹配法。以理论分析为基础，在给定的实海况条件下，对圆柱形浮体的设计参数进行优化，使其最大程度地获取波浪能，优化内容包括浮体截面半径和浮体吃水深度。优化结果对实际设计工作具有直接指导意义