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First observation results of Macao Science Satellite-1 on lightning-induced electron precipitation

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Science China Earth Sciences 2025年第1期68卷 1-10页

作者： Yongping WANG Yixin SUN Qiugang ZONG Gaopeng LU Xudong GU ze-Jun HU Bin LI Key Laboratory for Polar Science Ministry of Natural Resources Polar Research Institute of China Institute of Space Physics and Applied Technology Peking University State Key Laboratory of Lunar and Planetary Science Macau University of Science and Technology School of Earth and Space Sciences University of Science and Technology of China School of Electronic Information Wuhan University

The Medium-energy Electron Spectrometers(MES) is a space-borne instrument onboard Macao Science Satellite-1(MSS-1) dedicated to monitoring the typical charged particle radiation characteristics in the satellite orbit and the process of their occurrence and development, including short bursts of lightning-induced electron precipitation(LEP).This paper presents the first results of the LEP measurements by the MSS-1.47 LEP events are identified with the routine operation for 3 months since satellite launch, all within the range of 1.5

关键词： Lightning-induced electron precipitation Inner radiation belts Energetic electrons Macao Science Satellite-1

MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing

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Nano-Micro Letters 2025年第3期17卷 265-279页

作者： Yu‑ze Wang Yu‑Chang Wang Ting‑Ting Liu Quan‑Liang Zhao Chen‑Sha Li Mao‑Sheng Cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

Identification of a dual functional betulinic acid analog for the treatment of osteoarthritis by phenotypic screening

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Science China Life Sciences 2025年第1期68卷 300-302页

作者： ze-Min Lin Mai Xiang Wen-Hui Wei Shu-Hui Fan Li Chen Jie Wang Xiao-Qian Yang Chun-Hao Yang Shi-Jun He Jian-Ping Zuo Laboratory of Immunopharmacology State Key Laboratory of Drug ResearchShanghai Institute of Materia MedicaChinese Academy of Sciences School of Pharmacy University of Chinese Academy of Sciences School of Pharmacy Nanjing University of Chinese Medicine State Key Laboratory of Drug Research Department of Medicinal ChemistryShanghai Institute of Materia MedicaChinese Academy of Sciences Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine Experiment Center for Science and Technology Shanghai University of Traditional Chinese Medicine

Dear Editor, Phenotypic drug discovery, which observes compound effects on physiology,has given way to targeting specific molecules, but has revived by using modern methods to find drugs based on therapeutic outcomes in disease models(Vincent et al., 2022). Osteoarthritis(OA) is a prevalent chronic joint disorder, primarily affecting knee joints, with osteoclast activation due to low-grade inflammation resulting in increased bone resorption and structural changes in the joint(Katz et al.,2021).

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生态危机的哲学根源与生态文明的政治哲学维度构建

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东北师大学报（哲学社会科学版） 2025年第1期 143-153页

作者：肖克李溪泽东北师范大学政法学院吉林长春130117

生态危机的哲学根源来自西方二元主义所导致的对立与异化。二元主义由本体论扩展到认识论,再到政治哲学,在政治关系的两个维度上展现对立:权利绝对优先于权力,导致作为权利主体的人类与作为权力工具的自然万物的对立;权力支配度的不同,... 详细信息

生态危机的哲学根源来自西方二元主义所导致的对立与异化。二元主义由本体论扩展到认识论,再到政治哲学,在政治关系的两个维度上展现对立:权利绝对优先于权力,导致作为权利主体的人类与作为权力工具的自然万物的对立;权力支配度的不同,导致生态资源在人群中分配极度不均。资本主义政治哲学试图在两个层面维护二元对立,结果加剧生态危机:一方面,主流政治哲学竭力维护异化的合理性;另一方面,改变社会偏好,异化转移,将生产的异化转变为需求的异化。很多人认识到生态危机的这一根源,力求调节和缓和人与自然的二元对立,办法就是弱化人在人与自然关系中的主导地位。近年来,沿这一路径从政治哲学角度探讨生态危机的理论主要有三类,即生态保守主义、生态激进主义和生态国家主义,这些理论并未根本解决二元对立哲学的弊端。只有生态马克思主义既通过对资本主义生产方式的批判而克服了人与自然的对立,又通过对“类解放”目标的坚守而确保了人与自然关系中人类主体地位,将权利与义务统一。生态马克思主义真正提出生态文明得以建立的根本途径:生产领域,停止过度生产;需求领域,遏制无度消费;分配领域,调节生态资源的代内与代际分配;伦理领域,由群体本位走向类本位;制度领域,坚持以社会主义制度为基础建立生态保护和治理机制。

关键词：生态文明生态危机生态马克思主义政治哲学

Modular assembly of complex C-alkyl glycoside enabled via cooperative NHC and photoredox catalysis

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Science China Chemistry 2025年

作者： Rui-Qiang Jiao Ming Li Xi Chen Mei-ze Xu Tian Ding Xiao-Ping Gong Zhuo-Mei Li Xue-Yuan Liu Yong-Min Liang State Key Laboratory of Applied Organic Chemistry Lanzhou University College of Chemistry and Chemical Engineering Northwest Normal University

C-Alkyl glycosides are found in natural products and are indispensable in drug development programs,owing to their diverse range of medicinal ***-component reactions involving glycosyl radical addition are well documented and proved efficient for the C-alkyl glycosides ***,multicomponent reactions for the rapid and controllable construction of structurally diversified C-alkyl glycosides in a single step remains a significant challenge due to the issues associated with balancing reactivity,compatibility,and ***,we report an NHC and photoredox co-catalyzed three-component method to access complex and valuable C-alkyl *** protocol exhibits broad substrate scope and excellent chemoand ***,nine types of sugars are compatible with this *** addition,the generality of this catalytic strategy was further highlighted by the potential for scalable production,the feasibility of further modifications of the products and its successful application in the late-stage functionalization of pharmaceutical skeletons.

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基于世界模拟的政治非稳态:Sora的智能影像生成与历史重塑

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新疆师范大学学报（哲学社会科学版） 2025年第2期46卷 70-78页

作者：高奇琦台润泽华东政法大学政府管理学院上海201620 华东政法大学政治学研究院上海201620

OpenAI发布的文字转视频模型Sora在智能影像生成领域取得突破,被认为具备“世界模拟”能力。这种对现实物理世界的逼真模拟能力,引发人类对“真实性”的重新评估。通过模拟现实场景和历史事件,Sora在展示其应用潜力的同时,对真实性、历... 详细信息

OpenAI发布的文字转视频模型Sora在智能影像生成领域取得突破,被认为具备“世界模拟”能力。这种对现实物理世界的逼真模拟能力,引发人类对“真实性”的重新评估。通过模拟现实场景和历史事件,Sora在展示其应用潜力的同时,对真实性、历史真相和公众信任等带来挑战。文本介绍了Sora的技术背景,探讨了智能影像与虚假信息结合的风险。这一结合可能通过社会媒介影响公众信念和政治秩序,引发社会极化和分化。此外,在重塑历史记忆与认同时,可能导致信息的扭曲和伪造问题,或将社会推向政治非稳态。为应对技术带来的挑战,文本强调在迈向通用人工智能时代的过程中平衡技术创新与社会责任的重要性。通过深入分析Sora等智能影像生成的可能影响与挑战,提醒社会关注生成式人工智能技术的监管和伦理,确保技术发展的同时维护历史的真实性,保障社会福祉。

关键词： Sora 智能影像生成人工智能政治秩序

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一种多模式轮腿移动机器人的设计与分析

天津大学学报（自然科学与工程技术版） 2025年第1期58卷 12-23页

作者：李晋馥于泽连宾宾天津大学机构理论与装备设计教育部重点实验室天津300350

移动机器人作为智能勘探与侦察的自动化装备,在航天探测、抢险救灾等领域具有广阔的应用前景.轮腿式移动机器人因具有良好的机动性与越障能力而受到青睐.然而现有轮腿式移动机器人机身大多不可变形,导致机器人运动模式较少,地形适应性一... 详细信息

移动机器人作为智能勘探与侦察的自动化装备,在航天探测、抢险救灾等领域具有广阔的应用前景.轮腿式移动机器人因具有良好的机动性与越障能力而受到青睐.然而现有轮腿式移动机器人机身大多不可变形,导致机器人运动模式较少,地形适应性一般.且机身易与障碍物发生碰撞,无法在具备良好的爬坡能力的同时保证跨越障碍物的效率.针对上述问题,本文提出了一种采用多连杆可变形机构作为机身的轮腿式移动机器人.在设计机器人轮腿及可变形机身的基础上,建立机器人整体运动学模型,据此规划机器人3种运动模式:同步步态、翻滚步态和蜷曲-伸展步态.开展机器人在典型地形(平坦地面、松软地形、上升坡度、下降坡度、障碍物)下的运动性能分析,揭示机器人结构参数与地形特征(爬坡角度、障碍物高度)映射关系.最后基于理论分析结果搭建物理样机并开展实验.实验结果表明,本文所设计的多模式轮腿移动机器人的最大爬坡角度和越障高度分别为44°和28 mm,具有良好的爬坡能力与越障性能.此外,得益于多模式运动特点,机器人在包含平坦地面及松软地形在内的多地形下均具有良好的通过性,验证了机器人方案的可行性.本文为多模式轮腿运动机器人的设计与应用提供有益参考.

关键词：多模式移动机器人轮腿式移动机器人运动学建模实验研究

Effects of edge cracks on the thermomagnetic instabilities of type-Ⅱ superconducting thin films

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National Science Review 2023年第3期10卷 17-28页

作者： ze Jing Institute of Extreme Mechanics and School of Aeronautics Northwestern Polytechnical University

Thermomagnetic instability is a crucial issue for the application of *** of edge cracks on the thermomagnetic instability of superconducting thin films are systematically investigated in this *** flux avalanches in thin films are well reproduced through electrodynamics simulations,and relevant physical mechanisms are revealed from dissipative vortex dynamics *** is found that edge cracks sharply decrease the threshold field for the thermomagnetic instability of superconducting *** analysis shows that the time series of magnetization jumping displays scale-invariance and follows a power law with an exponent around *** a cracked film,flux jumps more frequently with lower amplitudes compared with its crack-less *** the crack extends,the threshold field decreases,the jumping frequency gets lower,while its magnitude gets *** the crack has extended long enough,the threshold field increases to even larger than that of the crack-less *** counterintuitive result originates from the transition of the thermomagnetic instability triggered at the crack tip to the one triggered at the center of the crack edges,which is validated by the multifractal spectrum of magnetization jumping *** addition,with the variation of crack lengths,three different modes of vortex motion are found,which explains the different flux patterns formed in the avalanche process.

关键词： superconducting thin film thermomagnetic instability flux jumps edge crack scaling law

宋代“鞫谳分司”制下司法参军的司法实践——以毛滂的“检法”实例为视角

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河北大学学报（哲学社会科学版） 2025年第1期50卷 44-52页

作者：柴荣陈泽北京师范大学法学院北京100875

在重视法律的历史背景下,宋代形成了以“防止奸弊”为目的,以“听”“断”分离为形式的“鞫谳分司”制度。司法参军作为“谳司”官员,是宋代地方州一级的重要司法属官,主要负责对“检出”的量刑法条进行核定与“驳正”。出生于簪缨之家... 详细信息

在重视法律的历史背景下,宋代形成了以“防止奸弊”为目的,以“听”“断”分离为形式的“鞫谳分司”制度。司法参军作为“谳司”官员,是宋代地方州一级的重要司法属官,主要负责对“检出”的量刑法条进行核定与“驳正”。出生于簪缨之家的毛滂,深受当时社会环境和家庭的影响,养成了较高的法律素养。分析毛滂在司法参军任上的“检法”实例,可以看出他在遵守法律的前提下,对“止杀”“仁民”“爱物”等司法活动多重价值的权衡取舍。结合具体的司法实践,可以更加深入地认识宋代重视法律的历史背景和“鞫谳分司”的运行机制,以及其与司法官员之间相互影响、相互作用的紧密关系。

关键词：重视法律 “鞫谳分司” 司法参军改易风俗