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New records of submarine hydrothermal activity in middle part of the Okinawa Trough

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Chinese Science Bulletin 1997年第7期42卷 574-577页

作者： Zhao, YY Zhai, SK li, rz li, FY Gao, AG He, LJ Wang, ZG Zhu, XQ Institute of Oceanology Chinese Academy of Sciences Qingdao China Institute of Geochemistry Chinese Academy of Sciences Guiyang China

THE hydrothermal activity area investigated is located at the middle of the trough (126°50′—127°30′E; 27°20′—27°50′N). Some surface sediment samples and core samples were collected, with other samples from non-hydrothermal activity area (128°20′—129°10′E; 30°30′—31°40′N) in the north of the trough for comparison. Analyses for elements and

关键词： hydrotKermal activity chemical elements the Okinawa Trough.

低频弱脉冲电磁场作用下成骨细胞的实时表面增强拉曼光谱研究

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中国组织工程研究与临床康复 2007年第40期11卷 8090-8094页

作者：宋昆苏纪勇何烁杰李任植南开大学物理科学学院南开大学泰达应用物理学院天津市300457 南开大学生物活性材料教育部重点实验室天津市300071 南开大学弱光非线性光子学材料教育部重点实验室天津市300457

目的:弱强度的低频电磁场可促进成骨细胞的增殖、分化和钙盐分泌,进而加速伤骨愈合、加快骨组织代谢,为揭示低频弱脉冲电磁场影响成骨细胞的初始效应,应用表面增强拉曼光谱技术探索电磁场对成骨细胞的作用机制。方法:用出生5d的Wistar... 详细信息

目的:弱强度的低频电磁场可促进成骨细胞的增殖、分化和钙盐分泌,进而加速伤骨愈合、加快骨组织代谢,为揭示低频弱脉冲电磁场影响成骨细胞的初始效应,应用表面增强拉曼光谱技术探索电磁场对成骨细胞的作用机制。方法:用出生5d的Wistar品系小鼠的颅骨接种成骨细胞并传代。应用表面增强拉曼光谱技术实时的方法采集不同磁场作用时间内低频率(50Hz)、低强度(0.30mT)脉冲电磁场作用下的成骨细胞的拉曼光谱。每隔1min采集一次,至作用8min止;并与电磁场作用前采集的拉曼光谱做比对。结果:比较电磁场作用前后和作用8min内不同时刻的拉曼光谱,可知其对成骨细胞膜蛋白和磷脂分子的构象有一定影响:表征膜蛋白中氨基酸侧链和磷脂C-C键骨架的特征峰的位移只发生了小幅变化,说明实验电磁场对细胞膜无损伤作用;在其作用之初的4.0～5.0min内,表征蛋白质构象信息的6个拉曼特征峰的相对强度随时间逐渐增加,揭示了构象发生改变的膜蛋白数量随电磁场作用时间的延长而增多。结论:实验探测到成骨细胞对低频脉冲电磁场的最初响应机制,表现为膜蛋白构象的有序变化。这为进一步探索由电磁刺激而激活的成骨细胞一系列信号转导通路的上游机制提供了有力的依据。

关键词：成骨细胞低频弱脉冲电磁场表面增强拉曼光谱膜蛋白

Constraints on holographic QCD phase transitions from PTA observations

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： Song He li li Sai Wang Shao-Jiang Wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

Cell polarization in ischemic stroke: molecular mechanisms and advances

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Neural Regeneration Research 2025年第3期20卷 632-645页

作者： Yuanwei li Xiaoxiao Xu Xuan Wu Jiarui li Shiling Chen Danyang Chen Gaigai li Zhouping Tang Department of Neurology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

Ischemic stroke is a cerebrovascular disease associated with high mortality and disability rates. Since the inflammation and immune response play a central role in driving ischemic damage, it becomes essential to modulate excessive inflammatory reactions to promote cell survival and facilitate tissue repair around the injury site. Various cell types are involved in the inflammatory response, including microglia, astrocytes, and neutrophils, each exhibiting distinct phenotypic profiles upon stimulation. They display either proinflammatory or anti-inflammatory states, a phenomenon known as ‘cell polarization.’ There are two cell polarization therapy strategies. The first involves inducing cells into a neuroprotective phenotype in vitro, then reintroducing them autologously. The second approach utilizes small molecular substances to directly affect cells in vivo. In this review, we elucidate the polarization dynamics of the three reactive cell populations(microglia, astrocytes, and neutrophils) in the context of ischemic stroke, and provide a comprehensive summary of the molecular mechanisms involved in their phenotypic switching. By unraveling the complexity of cell polarization, we hope to offer insights for future research on neuroinflammation and novel therapeutic strategies for ischemic stroke.

关键词： astrocyte polarization immune regulation inflammation ischemic injury microglia polarization neutrophil polarization signaling pathways stroke

Design of a cationic accelerator enabling ultrafast ion diffusion kinetics in aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 377-384页

作者： Yawei Xiao Qianqian Gu Haoyu li Mengyao li Yude Wang National Center for International Research on Photoelectric and Energy Materials School of Materials and Energy Yunnan University Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources School of Chemistry and Chemical Engineering Hainan University College of Chemical Engineering Fuzhou University Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies Yunnan University

Aqueous zinc-ion batteries are highly favored for grid-level energy storage owing to their low cost and high safety,but their practical application is limited by slow ion *** address this,a strategy has been developed to create a cation-accelerating electric field on the surface of the cathode to achieve ultrafast Zn2+diffusion *** employing electrodeposition to coat MoS2on the surface of BaV6O16·3H2O nanowires,the directional built-in electric field generated at the heterointerface acts as a cation accelerator,continuously accelerating Zn2+diffusion into the active *** optimized Zn2+diffusion coefficient in CC@BaV-6O16·3H2O@MoS2(7.5×10～8cm2s-1) surpasses that of most reported V-based ***,MoS2serving as a cathodic armor extends the cycling life of the Zn-CC@BaV6O16·3H2O@MoS2full batteries to over 10000 *** work provides valuable insights into optimizing ion diffusion kinetics for high-performance energy storage devices.

关键词： Internal electric field Cationic accelerator Ion diffusion kinetics Cathode modification strategy Aqueous zinc ion battery

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电流作用后成骨细胞表面增强的拉曼光谱

中国组织工程研究与临床康复 2007年第44期11卷 8839-8843页

作者：苏纪勇刘燕楠宋昆何铄杰李任植南开大学物理科学学院

目的:多种实验已获知弱强度的电流可促进成骨细胞的增殖、分化和钙盐分泌,进而加速骨伤愈合,加快骨组织代谢。利用表面增强拉曼光谱,可在单细胞水平观察电流刺激下成骨细胞质膜蛋白结构的变化。方法:实验于2006-06/08在南开大学泰达应... 详细信息

目的:多种实验已获知弱强度的电流可促进成骨细胞的增殖、分化和钙盐分泌,进而加速骨伤愈合,加快骨组织代谢。利用表面增强拉曼光谱,可在单细胞水平观察电流刺激下成骨细胞质膜蛋白结构的变化。方法:实验于2006-06/08在南开大学泰达应用物理学院完成。出生4d的昆明品系乳鼠6只,体质量约50g,将1×109L-1密度的成骨细胞用2.5g/L胰酶消化下来,置入到5mmol/L葡萄糖溶液(D-Hanks配置)中。做拉曼光谱的时候取出100μL含有成骨细胞的D-Hanks溶液,使一些成骨细胞固定到CaF2载玻片上。然后应用表面增强拉曼光谱技术,采集0.4mA和1.3mA不同电流强度作用下成骨细胞的拉曼光谱,并与电磁场作用前采集的拉曼光谱做对比。结果:①成骨细胞加电流前后,分别得到30个细胞的拉曼光谱,并利用软件origin7.0算出拉曼光谱的平均相对强度。②根据电流作用前10个细胞的拉曼光谱的相对峰值的平均值和电流作用后10个细胞的拉曼光谱的相对峰值的平均值,得出成骨细胞在受电流作用后,拉曼光谱中11个强峰的相对强度有明显的下降,表明在电流的作用后,成骨细胞膜蛋白构象有很大的变化。③表征蛋白质C-N伸缩振动的谱线1132cm-1的相对强度,在受两种电流作用后,分别增加了128.57%、57.14%,表明细胞质膜蛋白从有序状态转变为无序状态。结论:成骨细胞质膜蛋白在经过电流作用后,细胞膜结构发生较大变化,电流对稳定蛋白质二级结构的氢键和盐键有明显的影响。并且预示拉曼光谱有做为一种潜在的研究骨组织疾病诊断工具的可能性。

关键词：表面增强拉曼光谱成骨细胞电流膜蛋白

Increase in the variability of terrestrial carbon uptake in response to enhanced future ENSO modulation

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 32-38页

作者： Younong li li Dan Jing Peng Qidong Yang Fuqiang Yang Key Laboratory of Regional Climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Key Laboratory of Atmospheric Environment and Processes in the Boundary Layer over the Low-Latitude Plateau Region Department of Atmospheric ScienceYunnan UniversityKunmingChina

El Niño-Southern Oscillation(ENSO)is a major driver of climate change in middle and low latitudes and thus strongly influences the terrestrial carbon cycle through land-air *** the ENSO modulation and carbon flux variability are projected to increase in the future,but their connection still needs further *** investigate the impact of future ENSO modulation on carbon flux variability,this study used 10 CMIP6 earth system models to analyze ENSO modulation and carbon flux variability in middle and low latitudes,and their relationship,under different scenarios simulated by CMIP6 *** results show a high consistency in the simulations,with both ENSO modulation and carbon flux variability showing an increasing trend in the *** higher the emissions scenario,especially SSP5-8.5 compared to SSP2-4.5,the greater the increase in *** flux variability in the middle and low latitudes under SSP2-4.5 increases by 30.9%compared to historical levels during 1951-2000,while under SSP5-8.5 it increases by 58.2%.Further analysis suggests that ENSO influences mid-and low-latitude carbon flux variability primarily through *** occurrence may potentially be attributed to the increased responsiveness of gross primary productivity towards regional temperature fluctuations,combined with the intensified influence of ENSO on land surface temperatures.

关键词： Carbon variability ENSO modulation CMIP6 models

V itC/Fe^(2+)对细胞生长状态的影响

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第四军医大学学报 1999年第9期20卷 S054-S056页

作者：杨瑞华李瑞珍海春旭第四军医大学军事卫勤统计系军队卫生学教研室陕西西安710033

0 引言正常生物体内的自由基产生和清除是处在平衡状态的,外界环境中的自由基易与体内多种物质发生化学反应,并与内源性自由基一起影响着细胞的生长、分化及死亡过程[1～4],但不同实验的结果存在一些差别,甚至矛盾的现象,如过氧化氢可... 详细信息

0 引言正常生物体内的自由基产生和清除是处在平衡状态的,外界环境中的自由基易与体内多种物质发生化学反应,并与内源性自由基一起影响着细胞的生长、分化及死亡过程[1～4],但不同实验的结果存在一些差别,甚至矛盾的现象,如过氧化氢可刺激细胞生长或引起细胞凋亡,这提示我们对自由基作用于细胞的剂量-反应关系进行研究.

关键词：维生素C 铁细胞培养细胞凋亡

Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai li Zhen Ma Jin-Hua Gao School of Science Hebei University of Science and Technology School of Electronics and Information Zhengzhou University of Light Industry School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity