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Earth and Planetary Physics 2024年第4期8卷 632-640页

作者： YiYi Sui yajun zhu QiuYu Chen MaoSheng He JiYao Xu State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China Key Laboratory of Solar Activity and Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Hainan National Field Science Observation and Research Observatory for Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China

This study employs a linear inversion algorithm to retrieve volume emission rates(VERs)of molecular O_(2) nightglow at 1.27μm,utilizing Limb-Viewed spectra obtained from the SCanning Imaging Absorption spectroMeter for Atmospheric for CHartographY(SCIAMACHY)payload on board the Envisat *** retrieved results are compared with VERs data from the SABER payload on the Thermosphere Ionosphere Mesosphere Energetics and Dynamics(TIMED)satellite,exhibiting *** will help to facilitate accurate revelation of spatial distribution and periodic variation in O_(2) *** are extracted monthly within the altitude range of 75-110 km from 2002 to 2012,yielding a climatology of spatial and temporal *** meridional structure exhibits two maxima,at the equator and at 45°*** August and October,the VERs exhibit a meridional bimodal structure,with the weaker one above the equator and the stronger one above 45°*** April,the VERs reach their annual ***,harmonic analysis reveals significant temporal variations on different *** emission shows characteristics of annual and semi-annual variation,and a non-linear long-term trend associated with solar cycle activity.

关键词： VERs O_(2)1.27μm nightglow SCIAMACHY

The potential mechanism and clinical application value of remote ischemic conditioning in stroke

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Neural Regeneration Research 2025年第6期20卷 1613-1627页

作者： yajun zhu Xiaoguo Li Xingwei Lei Liuyang Tang Daochen Wen Bo Zeng Xiaofeng Zhang Zichao Huang Zongduo Guo The First Affiliated Hospital of Chongqing Medical University ChongqingChina

Some studies have confirmed the neuroprotective effect of remote ischemic conditioning against stroke. Although numerous animal researches have shown that the neuroprotective effect of remote ischemic conditioning may be related to neuroinflammation, cellular immunity, apoptosis, and autophagy, the exact underlying molecular mechanisms are unclear. This review summarizes the current status of different types of remote ischemic conditioning methods in animal and clinical studies and analyzes their commonalities and differences in neuroprotective mechanisms and signaling pathways. Remote ischemic conditioning has emerged as a potential therapeutic approach for improving stroke-induced brain injury owing to its simplicity, non-invasiveness, safety, and patient tolerability. Different forms of remote ischemic conditioning exhibit distinct intervention patterns, timing, and application range. Mechanistically, remote ischemic conditioning can exert neuroprotective effects by activating the Notch1/phosphatidylinositol 3-kinase/Akt signaling pathway, improving cerebral perfusion, suppressing neuroinflammation, inhibiting cell apoptosis, activating autophagy, and promoting neural regeneration. While remote ischemic conditioning has shown potential in improving stroke outcomes, its full clinical translation has not yet been achieved.

关键词： Akt apoptosis autophagy cerebral perfusion cerebral vascular stenosis clinical transformation hemorrhagic stroke ischemic stroke neuroinflammation neuroprotection Notch1 PI3K remote ischemic conditioning stroke

Progress of International Meridian Circle Program

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空间科学学报 2024年第4期44卷 741-745页

作者： WANG Chi BLANC Michel ZHANG Shunrong DENARDINI Clezio Marcos LIU William SHEN Xuhui WU Jian XU Jiyao LI Hui ZHANG Qinghe REN Liwen zhu yajun LI Guozhu DING Zonghua LIU Zhengkuan YANG Fang National Space Science Center Chinese Academy of SciencesBeijing 100190 IRAP(CNRS-University Toulouse III-CNES) Toulouse 31400 Haystack Observatory Massachusetts Institute of TechnologyMA 01886 Instituto Nacional de Pesquisas Espaciais São Josédos Campos(SP)Brazil 12227-010 China Research Institute of Radio wave Propagation Qingdao 266000 Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100083

In 2024,the Chinese Meridian Project(CMP)completed its construction,deploying 282 instruments across 31 *** achievement not only provides a robust foundation but also serves as a reference template for the International Meridian Circle Program(IMCP).The IMCP aims to integrate and establish a comprehensive network of ground-based monitoring stations designed to track the propagation of space weather events from the Sun to ***,it monitors various disturbances generated within the Earth system that impact *** the past two years,significant progress has been made on the *** particular,the second phase of construction for the China-Brazil Joint Laboratory for Space Weather has been completed,and the North Pole and Southeast Asia networks are under active *** 2024 IMCP joint observation campaign was successfully *** facilitate these developments,the scientific program committee of IMCP was established,following the success of 2023 IMCP workshop and the space weather school,which was co-hosted with the Asia-Pacific Space Cooperation Organization(APSCO)and sponsored by Chinese Academy of Sciences(CAS)and Scientific Committee on Solar-Terrestrial Physics(SCOSTEP).Preparations are now underway for the 2024 workshop in collaboration with the National Institute for Space Research(INPE)in Brazil.

关键词： Chinese Meridian Project(CMP) International Meridian Circle Program(IMCP) China-Brazil Joint Laboratory for Space Weather North Pole and Southeast Asia networks

基于分层深度强化学习的分布式能源系统多能协同优化方法

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电力系统自动化 2024年第1期48卷 67-76页

作者：王磊胡国吴海谭阔周成朱亚军南瑞集团有限公司(国网电力科学研究院有限公司) 江苏省南京市211106 国电南瑞科技股份有限公司江苏省南京市211106

分布式能源系统的多能协同运行对于促进新能源的消纳具有重要意义。然而,分布式能源系统中源荷的不确定性以及异质能源网络的时空差异性,给多能协同优化问题带来巨大挑战。针对这一问题,提出了一种面向分布式能源系统的两阶段多能协同... 详细信息

分布式能源系统的多能协同运行对于促进新能源的消纳具有重要意义。然而,分布式能源系统中源荷的不确定性以及异质能源网络的时空差异性,给多能协同优化问题带来巨大挑战。针对这一问题,提出了一种面向分布式能源系统的两阶段多能协同优化模型,通过采用长时间尺度控制和短时间尺度控制两阶段解耦决策方式,实现了对不同时间响应特性的复合空间进行序贯决策。然后,面对高维复合搜索空间和源荷不确定性因素,采用了深度强化学习无模型解决方案,并提出一种全新的分层深度强化学习算法进行求解。通过算例仿真验证了所提模型和求解方法的有效性和优越性。

关键词：分布式能源系统新能源多能协同序贯决策深度强化学习

Occurrence characteristics of branching structures in equatorial plasma bubbles:a statistical study based on all-sky imagers in China

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Earth and Planetary Physics 2021年第5期5卷 407-415页

作者： Kun Wu JiYao Xu yajun zhu Wei Yuan State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China

Branching structure(BS)is a very important phenomenon in the evolution of equatorial plasma bubbles(EPBs),the mechanism of which is widely studied from observation and from ***,occurrence characteristics of branching structure of equatorial plasma bubbles(BSEPBs)have not been well *** this work,we used seven-years(2012-2018)of observations from two all-sky imagers to study occurrence of BSEPBs in *** data reveal a high incidence of BS in EPB cases;in particular,most EPBs occurring on days with geomagnetic disturbances exhibited *** when all EPBs exhibited BS increased significantly in the 2014 solar *** times of BSEPBs varied with local time;most of the BSEPBs began to appear between 21:00 and 22:00 *** the solar maximum,some BSEPBs were observed after *** data also reveal that BSEPBs are characterized primarily by two branches or three ***-branching appeared only in the solar *** events with different coexisting branching structures increased from 2012 to 2014 and decreased from 2014 to *** results strongly suggest that BSEPB occurrence is related to solar activity and geomagnetic activity,and thus provide a new perspective for future studies of EPBs as well as enriching our understanding of ionospheric irregularity.

关键词： branching structure of equatorial plasma bubble equatorial plasma bubble ionospheric irregularity all-sky imager

磁性服务理念联合五行音乐疗法应用于老年慢性胃炎患者的效果

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卫生职业教育 2024年第16期42卷 131-134页

作者：朱雅君林水清第九〇九医院/厦门大学附属东南医院福建漳州363000

目的探讨磁性服务理念联合五行音乐疗法应用于老年慢性胃炎患者的效果。方法前瞻性选取第九〇九医院进行治疗的老年慢性胃炎患者(100例),选取时间为2021年1月至2023年1月,并按照随机数表法将其分组,给予常规护理干预的50例患者为对照组... 详细信息

目的探讨磁性服务理念联合五行音乐疗法应用于老年慢性胃炎患者的效果。方法前瞻性选取第九〇九医院进行治疗的老年慢性胃炎患者(100例),选取时间为2021年1月至2023年1月,并按照随机数表法将其分组,给予常规护理干预的50例患者为对照组,给予磁性服务理念联合五行音乐疗法的50例患者为观察组。观察两组干预效果、心理状态、自我护理能力及护理满意度。结果观察组干预总有效率高于对照组(P<0.05);干预后观察组患者汉密尔顿焦虑量表(HAMA)评分及汉密尔顿抑郁量表(HAMD)评分低于对照组(P<0.05);干预后观察组患者自我护理能力各指标均高于对照组(P<0.05);观察组患者护理满意度高于对照组(P<0.05)。结论磁性服务理念联合五行音乐疗法应用于老年慢性胃炎患者可有效提高干预效果,改善其心理状态,提高自我护理能力及护理满意度。

关键词：磁性服务理念五行音乐疗法慢性胃炎老年患者

基于图像的强化学习机械臂无标定视觉伺服系统

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大众科学 2024年第4期45卷 1-4页

作者：陈砆兴朱亚军兰州石化职业技术大学甘肃兰州730060

为了解决传统机械臂视觉伺服受外界环境影响较大的问题,提出一种基于图像的无标定视觉伺服控制方法。该方法对采集的每一帧图像参数进行处理,无需繁琐的摄像头校准定位等操作,从而在复杂环境下获得了较高的抗干扰工作性能。通过动态的... 详细信息

为了解决传统机械臂视觉伺服受外界环境影响较大的问题,提出一种基于图像的无标定视觉伺服控制方法。该方法对采集的每一帧图像参数进行处理,无需繁琐的摄像头校准定位等操作,从而在复杂环境下获得了较高的抗干扰工作性能。通过动态的迭代学习过程实现机械臂的最优轨迹控制。在自由度机器臂测试平台上的实验结果表明:所提方法既可以减少模型参数,提高计算速度,又可以有效地对机械臂进行控制,可以对位置信息实施精确调整。

关键词：机械臂无标定视觉非线性矩阵轨迹控制

小麦蛋白水解物对嗜酸乳杆菌(Lactobacillus acidophilus)生长的影响研究

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中国酿造 2024年第7期43卷 171-176页

作者：熊昌武朱亚军张彦伍业旭郑重安琪酵母股份有限公司酵母功能湖北省重点实验室湖北宜昌443003

该研究对比了小麦蛋白水解物与不同蛋白胨对嗜酸乳杆菌生长的影响,重点从分子质量分布、氨基酸组成等方面解析了小麦蛋白水解物对嗜酸乳杆菌(Lactobacillus acidophilus)形态、活菌数、冻干存活率的影响。结果表明,小麦蛋白水解物是一... 详细信息

该研究对比了小麦蛋白水解物与不同蛋白胨对嗜酸乳杆菌生长的影响,重点从分子质量分布、氨基酸组成等方面解析了小麦蛋白水解物对嗜酸乳杆菌(Lactobacillus acidophilus)形态、活菌数、冻干存活率的影响。结果表明,小麦蛋白水解物是一种适用于嗜酸乳杆菌培养的有机氮源,同等培养条件下活菌数和冻干存活率高于其他蛋白胨,小麦蛋白水解物中分子质量为2000~5000 Da的组分是促进嗜酸乳杆菌生长的关键营养,含谷氨酰胺、脯氨酸组成的多肽可能是促进嗜酸乳杆菌缩短菌体,活菌数和冻干存活率提高的关键因素。该研究结果可为小麦蛋白水解物在嗜酸乳杆菌生产及其他发酵领域的应用提供一定的基础数据支撑。

关键词：小麦蛋白水解物嗜酸乳杆菌菌体形态冻干存活率

First experiment of spectrometric observation of hydroxyl emission and rotational temperature in the mesopause in China

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Science China(Technological Sciences) 2012年第5期55卷 1312-1318页

作者： zhu yajun XU JiYao YUAN Wei LIU Xiao State Key Laboratory of Space Weather Center for Space Science and Applied ResearchChinese Academy of SciencesBeijing 100190China Graduate University of Chinese Academy of Sciences Beijing 100049China

A SpectroMeter of Atmospheric RadiaTion （SMART） was developed and installed at the Xinglong station of the National Astronomical Observatories in Hebei province, China, which was supported by the Meridian Project [1]. The experimental tests of spectrometric observation of the hydroxyl emission and rotational temperature in China were conducted for the first time on the night of February 23, 2011 and the night of April 27, 2011, respectively. OH 6-2 band and OH 8-3 band spectra were measured and the rotational temperature was retrieved. Hourly average temperatures （186.82±6.40） K of OH 8-3 band and （178.07±6.73） K of OH 6-2 band were derived from the spectra observed on the night of February 23,2011. Intensities and ro- tational temperature against local time were determined by the spectra measured in the whole night of April 27, 2011. The rotational temperature was consistent with the spatial average temperature of NRLMSISE00 empirical model at height 83-91 km and the average temperature of TIMED/SABER from April to May of seven years at height 83-91 kin, with some discrepancies. The results showed that the new instrument and the retrieval method of the rotational temperature can give reasonable results of the airglow emission of OH and the temperature of mesopause.

关键词： SMART spectrometer OH airglow rotational temperature mesopause

High-Order Unified Gas-kinetic Scheme

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Communications in Computational Physics 2022年第9期32卷 951-979页

作者： Gyuha Lim yajun zhu Kun Xu Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Department of Mathematics The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Guangdong-Hong Kong-Macao Joint Laboratory for Data-Driven Fluid Mechanics and Engineering Applications Hong Kong University of Science and TechnologyHong KongChina Shenzhen Research Institute Hong Kong University of Science and TechnologyShenzhenChina

In this paper,we present a high-order unified gas-kinetic scheme(UGKS)using the weighted essentially non-oscillatory with adaptive-order(WENO-AO)method for spatial reconstruction and the two-stage fourth-order scheme for time *** the UGKS updates both the macroscopic flow variables and microscopic distribution function,and provides an adaptive flux function by combining the equilibrium and non-equilibrium parts,it is possible to take separate treatment of the equilibrium and non-equilibrium calculation in the UGKS for the development of highorder *** the fact that high-order techniques are commonly applied in the continuum flow simulation with complex structures,and that the rarefied flow structure is usually smooth in the physical space,we apply the high-order techniques in the equilibrium part of the UGKS for the capturing of macroscopic flow evolution,and retain the calculation of distribution function as a second-order method,so that a balance of computational cost and numerical accuracy could be well *** HUGKS has been validated by several numerical test cases,including sine-wave accuracy test,Sod-shock tube,Couette,oscillating Couette,lid-driven cavity and oscillating cavity *** is shown that the current method preserves the multiscale property of the original UGKS and obtains accurate solutions in the near continuum regimes.

关键词： High-order reconstruction two-stage fourth-order scheme WENO-AO micro flow