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Repetitive traumatic brain injury–induced complement c1–related inflammation impairs long-term hippocampal neurogenesis

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Neural Regeneration Research 2025年第3期20卷 821-835页

作者： jing Wang Bing Zhang Lanfang Li Xiaomei Tang Jinyu Zeng Yige Song chao Xu Kai Zhao Guoqiang Liu Youming Lu Xinyan Li Kai Shu Department of Neurosurgery Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina Department of Neurosurgery Shanxi Bethune HospitalShanxi Academy of Medical SciencesTongji Shanxi HospitalThird Hospital of Shanxi Medical UniversityTaiyuanShanxi ProvinceChina Department of Pathophysiology School of Basic Medicine and Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina institute for Brain Research Wuhan Center of Brain ScienceHuazhong University of Science and TechnologyWuhanHubei ProvinceChina Department of Graduate Student Chongqing Medical UniversityChongqingChina Department of Basic Medicine School of Medical ScienceHubei University for NationalitiesEnshiHubei ProvinceChina Department of Anatomy School of Basic Medicine and Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

Repetitive traumatic brain injury impacts adult neurogenesis in the hippocampal dentate gyrus,leading to long-term cognitive ***,the mechanism underlying this neurogenesis impairment remains *** this study,we established a male mouse model of repetitive traumatic brain injury and performed long-term evaluation of neurogenesis of the hippocampal dentate gyrus after repetitive traumatic brain *** results showed that repetitive traumatic brain injury inhibited neural stem cell proliferation and development,delayed neuronal maturation,and reduced the complexity of neuronal dendrites and *** with repetitive traumatic brain injuryalso showed deficits in spatial memory ***,following repetitive traumatic brain injury,neuroinflammation was enhanced in the neurogenesis microenvironment where c1q levels were increased,c1q binding protein levels were decreased,and canonical Wnt/β-catenin signaling was *** inhibitor of c1 reversed the long-term impairment of neurogenesis induced by repetitive traumatic brain injury and improved neurological *** findings suggest that repetitive traumatic brain injury–induced c1-related inflammation impairs long-term neurogenesis in the dentate gyrus and contributes to spatial memory retrieval dysfunc.ion.

关键词： complement c1 dendrite dentate gyrus hippocampus neural stem cell neurogenesis neuroinflammation neurological func.ion neuron traumatic brain injury

The low-latitude sodium layer:comparative data from lidar observations at Hainan,c.ina and São Paulo,Brazil

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Earth and Planetary Physics 2025年第1期9卷 39-53页

作者： Fang Wu jing Jiao GuoTao Yang LiFang Du ZhengKuan Liu HaoRan Zheng JiXin Guo ShaoHua Gong YaJun Zhu State Key Laboratory of 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 University of c.inese Academy of Sciences Beijing 100049China c.ina-Brazil Joint Laboratory for Space Weather NSSC/INPESão Josédos Campos 12227-010Brazil School of Physics and Electronics Engineering Hainan Normal UniversityHaikou 571158China

Physical and chemical processes observed in the mesosphere and thermosphere above the Earth’s low latitudes are complex and highly interrelated to ac.ivity in the low-latitude *** sodium detected by lidar can yield clues to dynamic and chemical processes in these spatial layers above the Earth’s *** paper is based on sodium layer data collected at two low-latitude stations,one in the northern hemisphere and one in the *** low-latitude sodium layer exhibits conspicuous seasonal variations in shape,density,and altitude;these variations are similar between Earth’s hemispheres:sodium layer density at both stations reaches its seasonal maximum in autumn and minimum in ***,maximal Na density over Brazil is greater than that over *** variations of Na density above the two low-latitude stations are also similar;at both,maxima are observed before *** variations of the Na layer over Brazil that differ from those observed in the northern hemisphere may be related to the South Atlantic Magnetic Anomaly(SAMA)or fountain *** suggest that low-latitude Na layer data may provide useful additional evidence that could significantly improve the low-latitude part of the WAccM-Na model.

关键词： metallic sodium layer seasonal variation nocturnal variation lidar

Designing Electronic Structures of Multiscale Helical converters for Tailored Ultrabroad Electromagnetic Absorption

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Nano-Micro Letters 2025年第1期17卷 439-455页

作者： Zhaobo Feng chongbo Liu Xin Li Guangsheng Luo Naixin Zhai Ruizhe Hu jing Lin Jinbin Peng Yuhui Peng Renchao che Key Laboratory of Jiangxi Province for Persistent Pollutants control and Resources Recycle School of Environmental and Chemical EngineeringNanchang Hangkong UniversityNanchang 330063People’s Republic of China School of Physics and Materials Nanchang UniversityNanchang 330031People’s Republic of China Key Laboratory of Nondestruc.ive Testing Ministry of EducationNanchang Hangkong UniversityNanchang 330063People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering and TechnologyFudan UniversityShanghai 200438People’s Republic of China

Atomic-scale doping strategies and structure design play pivotal roles in tailoring the electronic structure and physicochemical property of electromagnetic wave absorption(EMWA)***,the relationship between configuration and electromagnetic(EM)loss mechanism has remained ***,drawing inspiration from the DNA transc.iption process,we report the successful synthesis of novel in situ Mn/N co-doped helical carbon nanotubes with ultrabroad EMWA *** calculation and EM simulation confirm that the orbital coupling and spin polarization of the Mn–N4–c configuration,along with cross polarization generated by the helical structure,endow the helical converters with enhanced EM *** a result,HMc-8 demonstrates outstanding EMWA performance,ac.ieving a minimum reflec.ion loss of−63.13 dB at an ultralow thickness of 1.29 *** precise tuning of the graphite domain size,HMc-7 ac.ieves an effec.ive absorption bandwidth(EAB)of 6.08 GHz at 2.02 mm ***,construc.ing macroscale gradient metamaterials enables an ultrabroadband EAB of 12.16 GHz at a thickness of only 5.00 mm,with the maximum radar cross sec.ion reduc.ion value reac.ing 36.4 dB *** innovative approach not only advances the understanding of metal–nonmetal co-doping but also realizes broadband EMWA,thus contributing to the development of EMWA mechanisms and applications.

关键词： Metal-nonmetal co-doping 3d-2p orbital coupling Spin polarization Helical structure Broadband EM wave absorption

雾收集用单向导湿针织物涂层摩擦制备及性能研究

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丝绸 2025年第1期62卷 49页

作者：张静广靖陈诚新疆大学特色纺织品与清洁染整技术重点实验室新疆智能与绿色纺织重点实验室

随着人口爆炸、工业和高新产业发展的持续，工厂和居民对清洁用水需求日益增加，水雾收集器件不断涌现，而现有水雾收集器件多采用飞秒激光刻蚀等方式达到符合要求的浸润性表面，对设备要求较高。本文基于简便的室温自发胶凝作用，温和... 详细信息

随着人口爆炸、工业和高新产业发展的持续，工厂和居民对清洁用水需求日益增加，水雾收集器件不断涌现，而现有水雾收集器件多采用飞秒激光刻蚀等方式达到符合要求的浸润性表面，对设备要求较高。本文基于简便的室温自发胶凝作用，温和构建凝胶聚合物基质，通过引入反应组分以控制胶凝成形期间的微观形貌与表面能分布，经室温修饰形成超疏水聚合物复合材料。以针织物为基底、摩擦为手段构制Janus针织物涂层，利用其润湿不对称性实现单向导湿，进而在捕雾集水的同时减缓水蒸发以提升应用效率，达到低成本且高效的雾收集。

关键词：雾收集单向导湿针织物涂层摩擦制备 Janus

3D Printing of Tough Hydrogel Scaffolds with Func.ional Surface Structures for Tissue Regeneration

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Nano-Micro Letters 2025年第2期17卷 18-45页

作者： Ke Yao Gaoying Hong Ximin Yuan Weicheng Kong Pengcheng Xia Yuanrong Li Yuewei chen Nian Liu jing He Jue Shi Zihe Hu Yanyan Zhou Zhijian Xie Yong He State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Liangzhu Laboratory Zhejiang UniversityHangzhou 310027People’s Republic of China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province College of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Stomatology Hospital School of StomatologyZhejiang University School of MedicineHangzhou 310027People’s Republic of China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001People’s Republic of China institute of Digital Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006People’s Republic of China

Hydrogel scaffolds have numerous potential applications in the tissue engineering ***,tough hydrogel scaffolds implanted in vivo are seldom reported because it is difficult to balance biocompatibility and high mechanical *** by c.inese ramen,we propose a universal fabricating method(printing-P,training-T,cross-linking-c,PTc&PcT)for tough hydrogel scaffolds to fill this ***,3D printing fabricates a hydrogel scaffold with desired structures(P).Then,the scaffold could have extraordinarily high mechanical properties and func.ional surface structure by cycle mechanical training with salting-out assistance(T).Finally,the training results are fixed by photo-cross-linking processing(c).The tough gelatin hydrogel scaffolds exhibit excellent tensile strength of 6.66 MPa(622-fold untreated)and have excellent ***,this scaffold possesses func.ional surface structures from nanometer to micron to millimeter,which can efficiently induce direc.ional cell ***,this strategy can produce bionic human tissue with mechanical properties of 10 kPa-10 MPa by changing the type of salt,and many hydrogels,such as gelatin and silk,could be improved with PTc or PcT *** experiments show that this scaffold can effec.ively promote the new generation of muscle fibers,blood vessels,and nerves within 4 weeks,prompting the rapid regeneration of large-volume muscle loss injuries.

关键词： 3D printing Tough hydrogel scaffold Func.ional surface structure Tissue regeneration Biomaterials

Bifunc.ional bridging capping layer enables 24.5% efficiency of perovskite solar cells with polymer-based hole transport materials

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Science c.ina chemistry 2025年第1期 350-359页

作者： can Zhu Yiyang Wang Lei Meng Beibei Qiu jing Li Shucheng Qin Ke Hu Xin Jiang Wenbin Lai Minchao Liu Zhe Liu chenxing Lu Jinyuan Zhang Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences School of chemical Science University of Chinese Academy of Sciences Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province College of Physics and Electronic Information Engineering Zhejiang Normal University Key Laboratory of Photochemical conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of Sciences Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials ScienceSoochow University

Developing a bridge capping layer between perovskite and hole transport layer materials（HTMs） in the n-i-p perovskite solar cells（pero-Scs） is an effec.ive approach to modify the morphology of HTMs and passivate the perovskite ***, we select the quinoxaline-based bifunc.ional passivation agent, quinoxalin-6-yl-methylamine hydrochloride（Qx MAcl）,as the bridging layer, and a D-A copolymer PBQ12 containing the same quinoxaline unit as an HTM for the n-i-p pero-Scs. Due to the π-π stac.ing among the common quinoxaline units in the bridge layer and HTM, Qx MAcl induces the π-π stac.ing of the PBQ12 film and improves the film morphology of HTMs with better conduc.ivity. Additionally, Qx MAcl can effec.ively passivate the perovskite surface, and PBQ12 possesses appropriate energy levels and high hole mobility. The pero-Scs based on FAPbi3with PBQ12/Qx MAcl treatment showed a higher power conversion efficiency（PcE） of 24.05% and outstanding stability, maintaining 95.4% and 92.1% of its initial PcE after 750 h of storage and after over 800 h of thermal annealing at 85 °c, respec.ively. To further enhance the PcE of the PBQ12/Qx MAcl-based devices, we developed a non-metal ion dopant for the PBQ12 HTM. Through trace doping of PBQ12 HTM by the non-metal ion dopant, the PcE of the PBQ12/Qx MAcl-based devices reached 25.24%（the calibrated PcE of 24.55% by the National institute of Metrology, c.ina）.

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Luminescence and energy transfer of color-tunable Lu2MgAl4SiO12:Eu^2+,ce^3+,Mn^2+ phosphors

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Journal of Rare Earths 2020年第5期38卷 506-513页

作者： Zhiqiang Ming jing Zhao Hendrik c.Swart Zhiguo Xia The Beijing Municipal Key Laboratory of New Energy Materials and Technologies School of Materials Science&EngineeringUniversity of Science and Technology BeijingBeijing 100083China Department of Physics University of the Free StateP.O.Box 339Bloemfontein9300South Africa State Key Laboratory of Luminescent Materials and Devices and institute of Optical communication Materials South China University of TechnologyGuangzhou 510641China

Energy transfer among the co-doped ac.ivators is an efficient route to ac.ieve color-tunable emission in inorganic ***,photoluminescence tuning from blue to cyan has been ac.ieved in the Lu2MgAl4 SiO12;Eu^2+,ce^3+phosphors by varying the ce^3+concentration with a fixed Eu^2+*** the further introduc.ion of a Mn^2+-Si^4+couple into the host lattice,the emission color can be tuned to red through the energy transfer of Eu^2+and Mn^2+.The luminescence properties and the energy transfer mechanism were studied in *** energy transfer from Eu^2+to ce^3+is certified as a dipolequadrupole interac.ion with the energy transfer efficiency of 41.4%and Eu^2+to Mn^2+belongs to a dipole-dipole interac.ion with the energy transfer efficiency of 94.3%.The results imply that this singlephased Lu2MgAl4 SiO12:Eu^2+,ce^3+,Mn^2+phosphor has a potential prospect for application in near-UV c.ip pumped white light emitting diodes.

关键词： Rare earth ions Energy transfer Photoluminescence Lu2MgAl4SiO12

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缺陷对单层硅烯纳米梁振动频率的影响

原子与分子物理学报 2025年第6期42卷 76-82页

作者：张文博王静新疆大学物理科学与技术学院乌鲁木齐830017

由于硅纳米谐振器在量子计算、传感器、医学等方面存在广泛的应用,使其物理性质的研究具有重要意义.本文通过分子动力学模拟方法研究了掺杂元素、空位缺陷、掺杂浓度对单层硅烯纳米梁振动特性的影响.研究结果表明,单层硅烯纳米梁的振动... 详细信息

由于硅纳米谐振器在量子计算、传感器、医学等方面存在广泛的应用,使其物理性质的研究具有重要意义.本文通过分子动力学模拟方法研究了掺杂元素、空位缺陷、掺杂浓度对单层硅烯纳米梁振动特性的影响.研究结果表明,单层硅烯纳米梁的振动频率随着纳米梁长度的增加而减小.单元素、双元素掺杂均会导致单层硅烯纳米梁的振动频率的增加,且随着掺杂浓度的增加纳米梁的振动频率整体呈现增大的趋势.此外,单空位缺陷会导致单层硅烯纳米梁的振动频率随着缺陷浓度的增加而减小.掺杂-单空位缺陷的单层硅烯纳米梁的振动频率则呈现了随着掺杂浓度的增加先减小后增加的变化趋势.这些变化规律均是由掺杂元素、空位缺陷以及它们共同作用的结果.此研究结果对硅烯纳米谐振器,振荡器等纳米器件的设计具有一定的理论指导意义.

关键词：硅烯掺杂振动频率分子动力学

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Applications of in-situ solid-state nuclear magnetic resonance in methanol to olefins reac.ion

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Science c.ina chemistry 2025年第01期 134-151页

作者： jing Niu Shutao Xu Yingxu Wei Zhongmin Liu National Engineering Research center of Lower-carbon catalysis Technology Dalian Institute of Chemical PhysicsChinese Academy of Sciences State Key Laboratory of catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences University of c.inese Academy of Sciences

The methanol-to-olefins（MTO） reac.ion offers an alternative pathway for the produc.ion of low-carbon olefins from non-oil feedstocks. Fundamental research has been impeded by a lack of comprehensive understanding of its underlying mechanism,despite the significant progress made in industry. in-situ solid-state nuclear magnetic resonance（ss NMR） spectroscopy has emerged as a pivotal tool, offering crucial insights into key species under real-time operando conditions. Furthermore, the host–guest interac.ion between zeolites or surface species residing on zeolites and the reactant/ac.ive intermediates is revealed by the combination of in-situ13c MAS NMR and 2D correlation spectroscopy. Moreover, recent technological advancements in hyperpolarization（HP） methods, including HP129Xe NMR and dynamic nuclear polarization（DNP）, have significantly improved the sensitivity of ss NMR, enabling detailed structural and kinetic analysis as well as the detec.ion of trace species. in this feature article, we summarized recent advancements in（in-situ） ss NMR spectroscopy applied to MTO reac.ion processes,encompassing mechanistic.investigations at various stages and the intricate host–guest interac.ions. These theoretical insights into the dynamic evolution of MTO reac.ions lay a solid foundation for the optimization of catalytic processes and the development of efficient catalysts, thereby advancing the techniques towards more sustainable and economical produc.ion route for olefins.

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