便携式绝缘综合测试仪的研究

针对电气化铁道牵引供电设备的绝缘试验,研制了一种新型便携式绝缘综合测试仪。该测试仪具有利用计算机快速处理数据的能力和主动检测方法,并能有效地消除电磁干扰影响。研制中采用新型设计将高压源、调压装置等多种部件高度集成,其结构轻小,现场使用方便。     

船舶机损事故中人为失误的实证研究

根据近几年收集的浙江省主要航运公司发生的244起重大机损案例,从损伤部件、故障类型、发生时间、事故原因4个方面进行统计分析,揭示出导致船舶机损事故的主要原因是人为失误,对如何防止船舶机损事故中的人为失误提出建议。     

The estimation of wave elevation and wave disturbance caused by the wave orbital motion of a fully submerged hydrofoil craft

The current control system of a fully submerged hydrofoil craft has manual input of fore-foil depth and control mode selection to improve the performance of the control system. However, the manual input needs skillful human operation and observation of waves the encountered to work well over a wide range of waves. In order to use information about the waves encountered in the control system, we considered the estimation of wave elevation and wave disturbance which was caused by the orbital motion of the waves in irregular waves. First, we investigated the wave disturbance by a fully submerged hydrofoil craft, in a state-space model of wave disturbance, and in hydrofoil craft motion, etc. We than considered estimations of the wave elevation and wave disturbance using a shaping filter, a Kalman filter, an autoregressive (AR) model, etc. Finally, we confirmed through simulations that the estimation results and estimation error of wave elevation and wave disturbance were valid.     

基于人体工程学约束的汽车驾驶员动态H点人体机构的研究

建立了汽车驾驶员动态H点人体机构模型．利用人体工程学约束的方法，分析了驾驶员H点调整及靠背角调整时的人体机构的运动规律。     

HUMAN PAPILLOMAVIRUS TYPE 16 L1 PROTEIN CAN BE EXPRESSED IN LIVE ATTENUATED SHIGELLA FLEXNERI 5A STRAIN SH42

Cervicalcanceristhesecondmostcommon canceramongwomenworldwide,anditaccountfor thehighestmortalityindevelopingcountries.There areabout600000newcasesdiagnosedanditcauses aboutaquartermillionwomendeathperyear[1]. Highrisktypehumanpapillomavirusinfection (suc…     

生物降解高分子蛋白微球的制备

聚酯聚醚嵌段共聚物聚-DL-乳酸-聚乙二醇（poly-DL-lactide-b-polyethylene glycol，PELA）采用本体开环聚合法制备，PELA包裹人血清白蛋白（HSA）微球采用溶剂挥发法双乳液体系（W1／O／W2）制备．微球球形规整，表面比较光滑，粒径集中在0．5-5μm．考察了在内水相添加天然高分子海藻酸钠加氯化钙对蛋白包裹效率和微球性能的影响，并用染料结合法检测微球中蛋白含量．结果表明，在内水相添加质量分数为3．0％的海藻酸钠加氯化钙，对蛋白包裹效率有明显改善．     

基于模糊神经网络的员工晋升辅助决策系统

为定量地分析企业员工晋升决策过程的影响因素，用基于实例的模糊神经网络方法，通过划分非模糊化和模糊化输入变量。改进了Takagi-Sugeno模糊模型．用包含求和、求积和求极小运算节点的扩展的pi-sigma神经网络学习算法确定结论参数和前提参数。自适应地从员工数据库中归纳出模糊逻辑关系，建立企业晋升决策的辅助系统．经算例验证准确率达75％以上．     

IN VITRO CO-STIMULATORY ACTIVITY OF HUMAN B7.2(IgV+C)PROTEIN PRODUCED BY ENGINEERED BACTERIA

It was well known that "two signals" wereboth necessary to activate T lymphocytes. The firstsignal was provided by TCR--CD, which was en-gaged with antigen peptide--MHC complex, and thesecond, also named the costimulatory signal, wasprovided by the interaction between costimulatorymolecules B7. l and B7. 2 on antigen presenting celland its counter--receptor CD28/CTLA4 on T cell.The first signal alone without costimulation willlead T cell to anergy or apoptosis['~'2. B7. 2 mayplay a cri…     

PRIMARY STUDY ON MECHANISM OF COLLAGEN SYNTHESIS INHIBITION IN CULTURED HUMAN FETAL HEPATOCYTES PRETREATED BY SALVIA MILTIORRHIZA BUNGE

Ithasbeenclearedthatreactiveoxygenspeciesandreactiveoxygenspecies inducedlipidperoxida tioncanstimulatecollagensynthesisofhepaticparenchymalcellsandnonparenchymalcellsandre sultinhepaticfibrosis,andthecollagensynthesisincreasingofHepatocytesmay playanimportantroleinhepaticfibrosis[1 -5] .Wehavefoundthatsalviamiltiorrhizabunge (SMB)couldprotecthu manfetalhepatocytesfromcarbontetrachloride(CCl4)mediatedlipid peroxidationinjuryinvit ro[6] .However,theeffectofSMBoncollagensyn thesisofhumanhepat…