10 research outputs found

    HBeAg特异免疫复合物检测及临床意义

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    采用单克隆抗-HBe固相ELISA法检测118例HBV感染者血清中HBeAg特异免疫复合物(HBeAg/IC),结果表明∶HBeAg/IC与HBV复制相关,可作为HBV复制的一种血清学标志,HBeAg阴性、HBVDNA阳性者中,62.2%患者HBeAg/IC阳性,提示HBeAg/IC的形成致使夹心法不能检出HBeAg,这类患者仍可以是HBV野毒株感染,并非均为HBeAg缺陷变异株感染;HBeAg/IC阳性血清ALT异常率明显高于HBeAg/IC阴性血清(P<0.01),提示HBeAg/IC存在与肝损伤有关

    宽带半导体可饱和吸收镜研制方法及选择腐蚀研究

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    介绍了用于固体激光器被动锁模自启动实现飞秒级脉冲输出的两种波长的带半导体可饱和吸收镜(800nm和1550 nm SESAMs)的研制方法和应用.制作宽带反射层的关键技术之一是AlGaAs/GaAs和InP/InGaAs/InGaAs的选择腐蚀.分别就几种湿法腐蚀和干法腐蚀进行了详细的分析和比较

    中空MO_x-RuO_2纳米结构用作高效超级电容器电极材料(英文)

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    以低成本的方式调控纳米材料的内部结构和化学成分对增强其在特定应用中的性能非常重要,但挑战巨大.本文将电置换反应与一种热处理过程相结合,报道了一种具有普适性的途径制备钌基二元和三元氧化物纳米中空结构,并测定了其作为超级电容器电极材料的性能.结果表明,采用KOH为电解质,在RuO_2的质量分数仅为19.6%时,所获得的负载于碳纳米管表面的中空NiO-RuO_2纳米结构在恒电流密度为1 Ag~(-1)时具有740 Fg~(-1)的比容量,并且具有良好的循环稳定性.在恒电流密度为5 Ag~(-1)时,比容量仍可以保持在638.4 Fg~(-1).本文以RuO2提高过渡金属的导电性,以过渡金属降低RuO...</p

    干旱内陆河流域水盐监测与模型研究及应用

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    课题的研究内容包括:流域、灌区、田间、剖面尺度水盐监测网点的布设与监测;水均衡参数的试验及土壤水盐动力学模型与土壤水盐均衡模型的构建;干旱区水盐平衡模型理论与推广应用;水盐平衡与地下水数值模型在开孔河流域重点工程规划中的应用;土壤水模型模拟节水灌溉与土壤盐碱化防治的关系;开孔河流域平原灌区最佳地下水埋深以及调控模式;近50年博斯腾湖与孔雀河水盐演变过程;地下水质模拟与水源地保护区域划分研究。所取得的科研成果可以广泛应用于干旱内陆河流域水资源评价和水、土资源管理,必将产生巨大的生态效益、经济效益和社会效益

    Measurement of integrated luminosity of data collected at 3.773 GeV by BESIII from 2021 to 2024

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    We present a measurement of the integrated luminosity e+e- of collision data collected by the BESIII detector at the BEPCII collider at a center-of-mass energy of Ecm = 3.773 GeV. The integrated luminosities of the datasets taken from December 2021 to June 2022, from November 2022 to June 2023, and from October 2023 to February 2024 were determined to be 4.995±0.019 fb-1, 8.157±0.031 fb-1, and 4.191±0.016 fb-1, respectively, by analyzing large angle Bhabha scattering events. The uncertainties are dominated by systematic effects, and the statistical uncertainties are negligible. Our results provide essential input for future analyses and precision measurements

    Measurement of integrated luminosity of data collected at 3.773 GeV by BESIII from 2021 to 2024*

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    Amplitude analysis of the decays D0π+ππ+πD^0\rightarrow\pi^+\pi^-\pi^+\pi^- and D0π+ππ0π0D^0\rightarrow\pi^+\pi^-\pi^0\pi0

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    Determination of the number of ψ(3686) events taken at BESIII

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    The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^
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