7 research outputs found

    我国独角兽企业回归A股对国内证券市场的影响

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    本文首先概括了在当下经济浪潮中,独角兽企业在证券市场上的发展态势;其次剖析了独角兽企业回归本土市场强烈意愿背后的动因,进而又分析了独角兽企业回归A股给市场带来的影响;最后针对其不良影响作出相应的策略构思

    Evaluation of the sentinel surveillance system on communicable diseases in Hong Kong

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    published_or_final_versionCommunity MedicineMasterMaster of Public Healt

    进展中的原生动物学研究热点领域与新格局

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    原生动物是一大类动物性单细胞真核生物.其高度特化的细胞结构与生理特征,独具的进化地位以及与环境、资源、人类健康和动物疾病间的密切关系,特别是其兼具的“细胞”与“动物”这个二元性统一体特性,使得以原生动物为模式或对象的研究在以细胞学、遗传学、适应与进化为代表的基础生物学、环境生物学、人类的健康与疾病防治、水产养殖及畜牧业等应用学科均具有十分广泛的科学意义和重要的应用价值.半个多世纪以来,伴随着研究队伍的不断壮大和发展,我国的原生动物学研究从早期经典的分类学、寄生虫学、生态学,逐步拓展到今天全面、深入地涉足涵盖基础与应用生物学各学科分支领域.在最近的几十年中,我国聚焦在海洋纤毛虫的多样性与系统学、表观遗传学、细胞生物学、比较基因组学、以寄生原虫为核心的免疫生物学、病害生物学、以鞭毛虫为核心的进化生物学、以海淡水纤毛虫和阿米巴等为核心的原生动物生态学等方向并取得了全面和长足的进展,许多代表性成果处于该领域国际前沿水平.本文扼要陈述了我国原生动物学各主流团队近年来的工作进展,介绍了该领域当前的研究热点和前沿性科学问题,同时对相关领域未来的发展进行了前瞻性描绘和规划

    进展中的原生动物学研究热点领域与新格局

    No full text
    原生动物是一大类动物性单细胞真核生物.其高度特化的细胞结构与生理特征,独具的进化地位以及与环境、资源、人类健康和动物疾病间的密切关系,特别是其兼具的&ldquo;细胞&rdquo;与&ldquo;动物&rdquo;这个二元性统一体特性,使得以原生动物为模式或对象的研究在以细胞学、遗传学、适应与进化为代表的基础生物学、环境生物学、人类的健康与疾病防治、水产养殖及畜牧业等应用学科均具有十分广泛的科学意义和重要的应用价值.半个多世纪以来,伴随着研究队伍的不断壮大和发展,我国的原生动物学研究从早期经典的分类学、寄生虫学、生态学,逐步拓展到今天全面、深入地涉足涵盖基础与应用生物学各学科分支领域.在最近的几十年中,我国聚焦在海洋纤毛虫的多样性与系统学、表观遗传学、细胞生物学、比较基因组学、以寄生原虫为核心的免疫生物学、病害生物学、以鞭毛虫为核心的进化生物学、以海淡水纤毛虫和阿米巴等为核心的原生动物生态学等方向并取得了全面和长足的进展,许多代表性成果处于该领域国际前沿水平.本文扼要陈述了我国原生动物学各主流团队近年来的工作进展,介绍了该领域当前的研究热点和前沿性科学问题,同时对相关领域未来的发展进行了前瞻性描绘和规划.</p

    JUNO Sensitivity on Proton Decay pνˉK+p\to \bar\nu K^+ Searches

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    The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in pνˉK+p\to \bar\nu K^+ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via pνˉK+p\to \bar\nu K^+ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is 9.6×10339.6 \times 10^{33} years, competitive with the current best limits on the proton lifetime in this channel

    JUNO sensitivity on proton decay pνK+p → νK^{+} searches

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    JUNO sensitivity on proton decay p → ν K + searches*

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    The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the pνˉK+ p\to \bar{\nu} K^+ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via pνˉK+ p\to \bar{\nu} K^+ is 36.9% ± 4.9% with a background level of 0.2±0.05(syst)±0.2\pm 0.05({\rm syst})\pm 0.2(stat) 0.2({\rm stat}) events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is 9.6×1033 9.6 \times 10^{33} years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies
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