石墨烯分散方法、石墨烯分散体系与其制备方法及应用

本发明公开了一种石墨烯分散方法、石墨烯分散体系与其制备方法及应用。本发明主要是通过将石墨烯均匀分散于环氧稀释剂内形成稳定石墨烯分散液，进一步的，再将所述石墨烯分散液与其它基质，例如环氧树脂均匀混合，而形成石墨烯分散体系，例如石墨烯‑环氧树脂复合材料。其中所述环氧稀释剂包含直接连接有环状基团的环氧化合物。藉由本发明可以解决石墨烯在常规有机溶剂及环氧树脂，特别是高粘度的环氧树脂中分散性差的问题，获得石墨烯分散量大、稳定性好的石墨烯分散体系，尤其是具有优良力学性能的石墨烯‑环氧树脂复合材料，且相关工艺路线简单、反应条件温和、原料来源丰富，安全环保

垃圾焚烧飞灰的熔融特性研究

以飞灰从开始熔融到熔渣全变成液体这一过程中的4个温度段所得到的熔渣为研究对象，探讨了它们的外观结构、成分、浸出毒性以及液固比、浸取液的pH值对熔渣中Ba、Cd、Ni等重金属浸出量的影响规律．结果表明：飞灰开始熔融后，随着温度的升高，熔渣的颜色逐渐变深、质地逐渐变硬、玻璃化现象逐渐明显，Ca、Al、Mg、K、Fe等主量元素的质量百分含量逐渐升高；熔融温度在1230℃以上所得到的熔渣不再是具有浸出毒性的危险废物；液固比对Ba、Zn、Cd和Ni的浸出量影响较大，而对As的影响较小；Ba、Cu、Pb和Zn等重金属元素在强酸和强碱环境下比较容易浸出

长期围栏封育对中天山三种类型草地土壤酶活性的影响[C]

本研究以新疆具有代表性的三种类型草地围栏年限为25年的土壤为研究对象,对围栏内外土壤酶活性以及与土壤环境因子之间的关系进行了相关性分析,结果表明:长期围栏封育可使围栏内的土壤酶活性高于围栏外,围栏可明显改善0～10cm土层中脲酶的活性和明显影响除亚高山草甸化草原土壤外的两类草地0～30cm土壤中蔗糖酶的活性;围栏内外土壤过氧化氢酶和碱性磷酸酶活性都较低,四种酶活性均随土壤深度增加,酶活性逐渐降低;在亚高山草原,酶活性与土壤含水量呈现出极显著的相关水平(P<0.01),而在亚高山草甸化草原,脲酶、碱性磷酸酶、蔗糖酶活性与土壤含水量也呈显著相关性(P<0.05)。酶活性与土壤有机质、速效磷、速效氮..

长期围栏封育对中天山草地植物群落特征及多样性的影响/Effects of enclosure on plant diversity and community characteristics in pasture of Middle Tianshan Mountain[J]

以中科院新疆巴音布鲁克草原生态站25年围封样地为对象,研究亚高山草原、亚高山草原化草甸和亚高山草甸化草原的植物群落特征及物种多样性。结果表明,长期围封对3种草地类型草地植被盖度、平均高度、地上生物量均有不同程度的提高,围栏内生物量与植株高度均表现为亚高山草原化草甸〉亚高山草甸化草原〉亚高山草原;3种草地类型围栏内外生物量和植被盖度差异呈极显著（P〈0.01）,且亚高山草原化草甸和亚高山草甸化草原围栏内外植物高度差异极显著（P〈0.01）。围封25年后,围栏外的群落丰富度指数和优势度指数均高于围栏内,而均匀度指数围栏内均高于围栏外

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

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 $p\to \bar\nu K^+$ 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 $p\to \bar\nu K^+$ 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 $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

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

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 $p\to \bar{\nu} K^+$ 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 $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies