摘要：目的利用微阵列定量检测急性白血病患者E-cadherin基因启动子区CpG岛的甲基化改变，初步探讨基因芯片在肿瘤甲基化检测中的作用。方法用亚硫酸氢盐处理基因组DNA，并以此为模板进行PCR扩增。目的序列中未甲基化的CpG位点被翻转成TpG，而甲基化的CpG位点保持不变。设计5组探针构建一种检测急性白血病E—cadherin基因甲基化改变的微阵列。通过绘制标准曲线，定量检测样本的甲基化改变。结果利用微阵列定量检测了5例急性白血病患者的样本***基因的甲基化改变，5个检测区域不同程度发生了甲基化，且发生高甲基化的区域一致。检测结果经过基因测序验证。结论基因芯片能够作为一种定量检测基因甲基化改变的有效工具，可用于白血病甲基化的定量研究。其较基因测序省时省力，且能实现定量和高通量检测。

摘要：Lithium-ion capacitors(LICs)could combine the virtues of high power capability of conventional supercapacitors and high energy density of lithium-ion ***,the lack of high-performance electrode materials and the kinetic imbalance between the positive and negative electrodes are the major *** this study,Fe3O4 nanoparticles encapsulated in nitrogen-rich carbon(Fe3O4@NC)were prepared through a self-assembly of the colloidal Fe OOH with polyaniline(PANI)followed by *** to the well-designed nanostructure,conductive nitrogen-rich carbon shells,abundant micropores and high specific surface area,Fe3O4@NC-700 delivers a high capacity,high rate capability and long cycling *** analyses of the redox reactions reveal the pseudocapacitive mechanism and the feasibility as negative material in LIC devices.A novel LIC was constructed with Fe3O4@NC-700 as the negative electrode and expanded graphene(EGN)as the positive *** wellmatched two electrodes effectively alleviate the kinetic imbalance between the positive and negative *** a result,Fe3O4@NC-700//EGN LIC exhibits a wide operating voltage window,and thus achieves an ultrahigh energy density of 137.5 W h kg^-*** results provide fundamental insights into the design of pseudocapacitive electrode and show future research directions towards the next generation energy storage devices.