10 research outputs found

    ST段抬高型急性心肌梗死院前溶栓治疗中国专家共识

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    急性心肌梗死仍然严重威胁我国人民健康,在我国广大城乡地区,形势更为严峻[1,2]。及时救治急性心肌梗死患者,降低死亡率和保护心脏功能刻不容缓。鉴于我国的实际情况,院前溶栓治疗在大城市以外的城乡地区具有重要意义。为此,中国医师协会胸痛专业委员会及中国医学救援协会心血管急救分会专门组织有关专家制订了本共识,旨在帮助院前医疗急救人员对急性心肌梗死患者选择最佳

    中国区域农田秸秆露天焚烧排放量的估算

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    Preparation and Performance of Sn-Co-M-C(M = Zn, Fe)Composites as an Anode Material

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    以金属氧化物和蔗糖为原料,经混合球磨,高温碳热还原制备Sn-Co-M-C(M = Zn, Fe)复合负极材料. 采用XRD、SEM测试样品结构、观察样品形貌. 电化学性能测试表明,Sn-Co-Zn-C电极其首次嵌锂比容量571 mAh.g-1,45次循环后其比容量369 mAh.g-1,其比容量、循环寿命好.The anode materials of Sn-Co-M-C (M = Zn, Fe) composites were prepared by carbothermal reduction method from metal oxides and sucrose in N2 atmosphere. Their structural and electrochemical properties were studied by XRD, SEM and charge-discharge test. Among them, the Sn-Co-Zn-C composite showed higher specific capacity and good cycle performance. The initial specific discharge capacity of 571 mAh.g-1 could be obtained, while 369 mAh.g-1 was still kept after 45 cycles.作者联系地址:苏州大学化学电源研究所,江苏 苏州 215006Author's Address: Institute of Chemical Power Sources, Soochow University, Suzhou 215006, Jiangsu, China通讯作者E-mail:[email protected]

    北疆矿产资源开发与可持续发展的环境问题研究

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    在新疆矿产资源开发过程中,存在着较为严重的环境污染、生态破坏、资源浪费和国有资产流失问题,而且生态破坏和国有资产流失问题比环境污染问题更为严重。课题首次对额尔齐斯河流域金矿和稀有金属矿的氰化物、汞和放射性污染问题进行了较为系统的定量研究,国内外首次对自然生态环境中氰化物的自然讲解规律进行了定量研究和模式研究。为根据氰化物的环境容量,制定防灾措施和环境保护标准提供了依据,提出了矿业活动中防止氰化物、汞和放射性污染的具体技术和管理建议,提出了整治额尔齐斯河流域生态环境的建议,提出了改革矿业体制,实现矿业可持续发展的政策性建议。 成果类别: 基础理

    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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