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Spatial differences of ice volume across High Mountain Asia

Advances in Climate Change Research 2023年第4期14卷 511-521页

作者： Rong-Jun WANG Yong-Jian DING dong-Hui ShanGGUNA Shi-Yin LIU Wan-Qin GUO hai-dong han Yao-Jun LI Miao SONG Zhi-Qin ZHENG State Key Laboratory of Cryospheric Sciences Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Yulong Snow Station of Cryosphere and Sustainable Development Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Institute of International Rivers and Eco-Security Yunnan UniversityKunming 650500China University of Chinese Academy of Sciences Beijing 100049China College of Water Conservancy and Hydropower Engineering Gansu Agricultural UniversityLanzhou 730000China

Advanced knowledge of glacier ice volume is vital for water resource *** studies have focused on the estimation of ice volume,but the quantitative understanding of the spatial variability of ice volume across High Mountain regions is currently ***,we used global-scale ice thickness,debris cover and equilibrium line data to analyse ice-volume differences at various scales across High Mountain Asia(HMA).The results showed that 6.3%of the HMA glaciers are covered by debris,with debris area and volume accounting for 9%and 13.8%of the total glacier area and volume,*** average debris-cover volume ratio of 13%was *** spatial distribution of ice volume across the HMA varies considerably from region to *** ice volume is predominately distributed on north-facing slopes and accounts for approximately 38%of the *** is very common in Altay and Sayan,East Tian Shan,West Kunlun,East Kunlun and Qilian ***,ice volumes in the Himalayas and Hengduan Shan are mainly distributed on the southeast *** weight functions showed that glacier area,maximum length and average thickness are closely related to ice volume,with average relative weights of 63.7%,22.5%and 9.8%,*** study is important for the evolution of glacier volume and water resource assessment.

关键词： Ice thickness Ice volume Spatial variability High mountain asia

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Lunar Penetrating Radar onboard the Chang'e-3 mission

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Research in Astronomy and Astrophysics 2014年第12期14卷 1607-1622页

作者： Guang-You Fang Bin Zhou Yi-Cai Ji Qun-Ying Zhang Shao-Xiang Shen Yu-Xi Li Hong-Fei Guan Chuan-Jun Tang Yun-Ze Gao Wei Lu Sheng-Bo Ye hai-dong han Jin Zheng Shu-Zhi Wang Institute of Electronics Chinese Academy of Sciences

Lunar Penetrating Radar （LPR） is one of the important scientific instru- ments onboard the Chang＇e-3 spacecraft. Its scientific goals are the mapping of lunar regolith and detection of subsurface geologic structures. This paper describes the goals of the mission, as well as the basic principles, design, composition and achievements of the LPR. Finally, experiments on a glacier and the lunar surface are analyzed.

关键词： Chang'e-3 mission -- moon rover -- Lunar Penetrating Radar

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加劲薄壁钢管混凝土柱的试验性能

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钢结构(中英文) 2008年第4期 83-84页

作者： Zhong Tao, Lin-hai han and dong-Ye Wang

对加劲薄壁钢管混凝土柱的结构性能进行试验研究。通过在钢管内表面焊接纵向加劲肋实现加强的作用。同时对12个不带加劲肋的钢管混凝土柱进行试验,部分柱的填充混凝土中加有钢纤维。试验结果表明,加劲肋可以有效延迟钢管局部屈曲现象的... 详细信息

对加劲薄壁钢管混凝土柱的结构性能进行试验研究。通过在钢管内表面焊接纵向加劲肋实现加强的作用。同时对12个不带加劲肋的钢管混凝土柱进行试验,部分柱的填充混凝土中加有钢纤维。试验结果表明,加劲肋可以有效延迟钢管局部屈曲现象的出现。当加劲构件达到最大承载量时钢板才出现屈曲,所以相比普通钢管混凝土,加劲钢管混凝土具有更高的适用性。

关键词：钢管混凝土(CFST) 薄壁柱局部屈曲加劲肋钢纤维混凝土(SFRC) 强度延性

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Human neural stem cell-derived extracellular vesicles protect against ischemic stroke by activating the PI3K/AKT/mTOR pathway

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Neural Regeneration Research 2025年第11期20卷 3245-3258页

作者： Jiayi Wang Mengke Zhao dong Fu Meina Wang Chao han Zhongyue Lv Liang Wang Jing Liu Stem Cell Clinical Research Center The First Affiliated Hospital of Dalian Medical UniversityDalianLiaoning ProvinceChina Dalian Innovation Institute of Stem Cell and Precision Medicine DalianLiaoning ProvinceChina Institute(College)of Integrative Medicine Dalian Medical UniversityDalianLiaoning ProvinceChina

Human neural stem cell-derived extracellular vesicles exhibit analogous functions to their parental cells,and can thus be used as substitutes for stem cells in stem cell therapy,thereby mitigating the risks of stem cell therapy and advancing the frontiers of stem cell-derived *** lays a foundation for the development of potentially potent new treatment modalities for ischemic ***,the precise mechanisms underlying the efficacy and safety of human neural stem cell-derived extracellular vesicles remain unclear,presenting challenges for clinical *** promote the translation of therapy based on human neural stem cell-derived extracellular vesicles from the bench to the bedside,we conducted a comprehensive preclinical study to evaluate the efficacy and safety of human neural stem cell-derived extracellular vesicles in the treatment of ischemic *** found that administration of human neural stem cell-derived extracellular vesicles to an ischemic stroke rat model reduced the volume of cerebral infarction and promoted functional recovery by alleviating neuronal *** human neural stem cell-derived extracellular vesicles reduced neuronal apoptosis by enhancing phosphorylation of phosphoinositide 3-kinase,mammalian target of rapamycin,and protein kinase B,and these effects were reversed by treatment with a phosphoinositide 3-kinase *** findings suggest that human neural stem cell-derived extracellular vesicles play a neuroprotective role in ischemic stroke through activation of phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin signaling ***,we showed that human neural stem cell-derived extracellular vesicles have a good in vivo safety ***,human neural stem cell-derived extracellular vesicles are a promising potential agent for the treatment of ischemic stroke.

关键词： behavior exosome extracellular vesicles ischemic stroke mammalian target of rapamycin(mTOR) middle cerebral artery occlusion neural stem cells neuronal apoptosis phosphoinositide 3-kinase(PI3K) protein kinase B(AKT)

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伺服阀控制非对称液压缸同步控制性能分析

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沈阳工业大学学报 2004年第6期26卷 605-608页

作者：苏东海韩国惠沈阳工业大学机械工程学院辽宁沈阳110023

介绍了一种由双比例流量阀及伺服阀联合控制的双缸同步方案,讲述了本方法的工作原理,并推导出了伺服阀控制非对称液压缸同步系统的动态响应数学模型,并给出了同步误差的数学表达式,仿真结果表明推导过程是正确的,并实现了双缸高精度同... 详细信息

介绍了一种由双比例流量阀及伺服阀联合控制的双缸同步方案,讲述了本方法的工作原理,并推导出了伺服阀控制非对称液压缸同步系统的动态响应数学模型,并给出了同步误差的数学表达式,仿真结果表明推导过程是正确的,并实现了双缸高精度同步动作.

关键词：伺服阀非对称缸双缸同步仿真

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Complexation Induced by Weak Interaction between DNA and PEO-b-P4VP below the CMC of the Polymer

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Chinese Journal of Polymer Science 2017年第1期35卷 46-53页

作者： han miao ya-fen wang hai-yan dong 陈道勇 The State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200433 China

The complexation between circular DNA and individual chains of PEO-b-P4VP with a relatively long PEO block and a short P4VP block is highly controllable when the interaction between DNA and the polymer is weak enough. When one circular DNA chain is taken into consideration, and the polymer concentration is far below its critical micelle concentration （CMC）, polymer chains are absorbed by DNA chain due to the interaction between the negatively charged DNA chain and the slightly positively charged P4VP block chains. After the adsorption/complexation, the DNA chain is converted into a nanoring （type 1）. In the nanoring, the DNA chain is sufficiently wrapped by the polymer and adopts a fully stretched conformation, so that the DNA compact ratio in the nanorings is close to 1. When the polymer concentration is close to but lower than the CMC, the free polymer chains in the solution are adsorbed not only by the DNA chain but also by the polymer chains that have already been adsorbed on the DNA chain. As a result, the circular DNA chain adsorbs more polymer chains, and thus the resultant nanoring （type 2） has a larger width. In the type 2 nanoring, the DNA chain is slightly compressed; the DNA compact ratio is only about 2-3. Therefore, complexation induced by the weak interaction between DNA and PEO-b-P4VP below the CMC can produce narrow-disperse and large nanorings with a perimeter of micrometers, which are difficult to prepare by existing methods.

关键词： Weak interaction DNA Individual polymer chains Block copolymer Critical micelle concentration

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基于中间态的网络安全机器翻译模型

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华北理工大学学报（自然科学版） 2025年第1期47卷 43-52页

作者：韩睿于复兴董海琳韩阳华北理工大学人工智能学院河北唐山063210 河北省工业智能感知重点实验室河北唐山063210 华北理工大学外国语学院河北唐山063210 华北理工大学理学院河北唐山063210

针对网络安全领域的中译英机器翻译存在大量专业术语,数据规模小以及不同语言的句法结构存在差异等问题,提出了一种基于中间态的网络安全机器翻译模型。通过研究中英句法结构上的差异,制定将中文转换为中间态的规则。结合BERT与SpaCy生... 详细信息

针对网络安全领域的中译英机器翻译存在大量专业术语,数据规模小以及不同语言的句法结构存在差异等问题,提出了一种基于中间态的网络安全机器翻译模型。通过研究中英句法结构上的差异,制定将中文转换为中间态的规则。结合BERT与SpaCy生成包含语义嵌入的中间态词向量,利用BERT捕捉句子的上下文语义信息,通过SpaCy解析依存关系,将两者整合为高维特征向量。实验结果表明,所提出的翻译模型在低资源网络安全双语数据集BLEU值达到了28.2,提升了1.0个BLEU值,WMT18公开中英双语数据集BLEU值达到了21.1,提升了0.9个BLEU值。可见通过中间态以及捕捉上下文语义信息和句法结构信息,模型能够更准确地处理专业术语、复杂句法等问题。

关键词：网络安全机器翻译依存分析 Transformer模型

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Theoretical calculations and evaluations of n+^(23)Na reaction

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Nuclear Science and Techniques 2016年第4期27卷 193-205页

作者： Zhen-dong Wu hai-Ying Liang Yin-Lu han Department of Nuclear Physics China Institute of Atomic Energy

The data for neutron-induced reactions are indispensable in a lot of applications of nuclear science and technologies. All reaction cross sections, angular distributions, energy spectra, and double-differential cross sections of neutron, proton, deuteron, triton, and alpha-particle emissions are consistently calculated and analyzed for n+^(23)Na reactions at incident neutron energies below200 Me V, based on nuclear theoretical models. The calculated results are compared with the experimental data and the evaluated data in the ENDF/B-VII, JENDL-4.0,and JEFF-3.2 libraries. In most cases, the calculated results describe the corresponding experimental data well. At the resonance energy region, evaluated experimental data are adopted to fit to the resonance structures.

关键词：计算结果诱发反应评价中子能量实验数据双微分截面反应截面共振能量

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Electrochemistry of Hydroquinone Derivatives at Metal and Iodine-modified Metal Electrodes

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Chemical Research in Chinese Universities 2006年第4期22卷 493-499页

作者： HOU Peng han dong-xue NIU Li LIN hai-bo State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China Graduate School of the Chinese Academy of Sciences Beijing 100039 P. R. China College of Chemistry Jilin University Changchun 130021 P. R. China

The difference in the electrochemical behavior of hydroquinone and pyrocatechol at platinum and gold surfaces was analyzed using voltammetry and attenuated total reflection Fourier transform infrared spectroscopy. The results show that the hydroquinone derivatives are adsorbed on a gold surface with vertical orientation, which makes the electron transfer between the bulk species and the electrode surface easier than that in the case of flat adsorption of hydroquinone derivatives that occurs at a platinum electrode. The formation of the vertical conformation and the rapid process of electron transfer were also confirmed by quantum chemistry calculations. In addition, the pre-adsorbed iodine on the electrodes played a key role on the adsorbed configuration and electron transfer of redox species.

关键词： Hydroquinone derivatives Iodine-modified Electrochemistry

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加劲薄壁中空钢管混凝土短柱的强度和延性研究

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钢结构 2009年第2期24卷 79-79页

作者： Zhong Tao,Lin-hai han and dong-Ye Wang

一般以为内部焊接的纵向加劲肋能够提高薄壁中空钢管混凝土柱的结构性能。对36个试件进行试验,其中包括30个带加劲肋和6个不带加劲肋的短柱,以研究不同方法对于这种加劲组合短柱延性性能的改善。这些方法包括:增加加劲肋的高度、在管钢... 详细信息

一般以为内部焊接的纵向加劲肋能够提高薄壁中空钢管混凝土柱的结构性能。对36个试件进行试验,其中包括30个带加劲肋和6个不带加劲肋的短柱,以研究不同方法对于这种加劲组合短柱延性性能的改善。这些方法包括:增加加劲肋的高度、在管钢每个面上增加加劲肋的数量、采用锯齿状加劲肋、在加劲肋上焊接滚边或锚条,在混凝土中添加钢纤维。试验发现,在混凝土中添加钢纤维是提高构件延性承载力的最有效方法,同时建筑成本和施工难度也不会明显增加。

关键词：钢管混凝土(CFST) 延性薄壁短柱轴压加劲肋钢纤维混凝土(SFRC) 滚边锚条局部屈曲

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