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Decadal expansion and contraction of permafrost in the Three-River Source Region,Qinghaie-Tibet Plateau(1901-2020)

Advances in Climate Change Research 2023年第2期14卷 226-236页

作者： Fang-Fang CHEN Dong-Liang LUO yi-ting gao Wen-Jie LEI State Key Laboratory of Frozen Soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

Permafrost and its spatiotemporal variation considerably influence the surface and sub-surface hydrological processes,biogeochemical cycles,fauna and flora growth and cold region engineering projects in the Three-River Source Region(TRSR),Qinghai–Tibet ***,the dynamics of permafrost over a relatively long term duration(e.g.>100 years)in the TRSR is not well ***,the spatial and temporal variations of the temperature at the top of the perennially frozen/unfrozen ground(TTOP),active layer thickness(ALT)in permafrost regions and the maximum depth of frost penetration(MDFP)in the seasonally frozen ground of the TRSR during 1901–2020 were simulated using the TTOP model and Stefan equation driven by the widely used reanalysis Climatic Research Unit 4.05 *** revealed that the permafrost in the TRSR over the past 120 years did not degrade monotonically but experienced considerable fluctuations in area with the decadal oscillations of climate warming and cooling:shrinking from 263.9×10^(3)km^(2)in the 1900s to 233.3×10^(3)km^(2)in the 1930s,expanding from 232.3×10^(3)km^(2)in the 1940s to 260.9×10^(3)km^(2)in the 1970s and shrinking again from 254.1×10^(3)km^(2)in the 1980s to 228.9×10^(3)km^(2)in the *** regional average TTOP increased from−1.34±2.74℃in the 1910s to−0.48±2.69℃in the 2010s,demonstrating the most noticeable change for the extremely stable permafrost(TTOP3.0 m by 12%from 1901 to ***,minor changes were observed for the regional average MDFP,probably due to the increase in the area proportion of MDFP3.5 m(owing to the transformation of permafrost to seasonally frozen ground)by 7.39%and 4.77%,*** findings can facilitate an in-depth understanding of permafrost dynamics and thus provide a scientific reference for eco-environment protection and s

关键词： Three-River Source Region Permafrost TTOP model Stefan equation Qinghaie-Tibet Plateau

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Ubiquitination in plant abiotic stress signaling

Ubiquitination in plant abiotic stress signaling

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中国遗传学会植物遗传和基因组学专业委员会2007年学术研讨会

作者： Xie Qi Zhang yi-Yue gao ting Zhao Qing-Zhen Cui Feng Liu Li-Jing Institute of Genetics and Developmental Biology,Chinese Academy of Science,Beijing 100101 China

Ubiquitination plays important roles in plant adapting itself to internal and external signals to regulate plant growth and *** developments in plant stress biology have demonstrated that numbers of plant E3 complexes...

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Endoplasmic reticulum stress and autophagy in cerebral ischemia/reperfusion injury:PERK as a potential target for intervention

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Neural Regeneration Research 2025年第5期20卷 1455-1466页

作者： Ju Zheng yixin Li ting Zhang Yanlin Fu Peiyan Long Xiao gao Zhengwei Wang Zhizhong Guan Xiaolan Qi Wei Hong Yan Xiao Key Laboratory of Endemic and Ethnic Diseases Ministry of Education&Key Laboratory of Medical Molecular Biology of Guizhou ProvinceGuizhou Medical UniversityGuiyangGuizhou ProvinceChina Guizhou Center for Disease Control and Prevention GuiyangGuizhou ProvinceChina Department of Histology and Embryology Guizhou Medical UniversityGuiyangGuizhou ProvinceChina Collaborative Innovation Center for Prevention and Control of Endemic and Ethnic Regional Diseases Co-constructed by the Province and Ministry GuiyangGuizhou ProvinceChina

Several studies have shown that activation of unfolded protein response and endoplasmic reticulum(ER)stress plays a crucial role in severe cerebral ischemia/reperfusion *** occurs within hours after cerebral ischemia,but the relationship between ER stress and autophagy remains *** this study,we established experimental models using oxygen-glucose deprivation/reoxygenation in PC12 cells and primary neurons to simulate cerebral ischemia/reperfusion *** found that prolongation of oxygen-glucose deprivation activated the ER stress pathway protein kinase-like endoplasmic reticulum kinase(PERK)/eukaryotic translation initiation factor 2 subunit alpha(e IF2α)-activating transcription factor 4(ATF4)-C/EBP homologous protein(CHOP),increased neuronal apoptosis,and induced ***,inhibition of ER stress using inhibitors or by si RNA knockdown of the PERK gene significantly attenuated excessive autophagy and neuronal apoptosis,indicating an interaction between autophagy and ER stress and suggesting PERK as an essential target for regulating *** autophagy with chloroquine exacerbated ER stress-induced apoptosis,indicating that normal levels of autophagy play a protective role in neuronal injury following cerebral ischemia/reperfusion *** from this study indicate that cerebral ischemia/reperfusion injury can trigger neuronal ER stress and promote autophagy,and suggest that PERK is a possible target for inhibiting excessive autophagy in cerebral ischemia/reperfusion injury.

关键词： apoptosis ATF4 autophagy C/EBP homologous protein cerebral ischemia/reperfusion injury eIF2α endoplasmic reticulum stress PERK

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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

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ON POTENT ELEMENTS AND PSEUDO CLEAN RINGS

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数学杂志 2025年第1期45卷 39-47页

作者： DING Yan gao Han-peng LIU Xin-yi YAN Zi-yi ZHANG ting School of Mathematical Sciences Anhui UniversityHefei 230601China

In this paper,potent index of an element and pseudo clean rings are *** properties and examples of pseudo clean rings are *** also show that Zm is pseudo clean for every 2≤m∈Z and pseudo clean rings are ***,we prove... 详细信息

关键词： clean rings strongly J-clean rings pseudo clean rings potent elements

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大学生生活规律性与自我损耗的关系及习惯性行为的中介作用研究

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中国全科医学 2017年第28期20卷 3563-3566页

作者：王蕴慧王利刚张静怡陶婷高文斌中国科学院心理健康重点实验室中国科学院心理研究所北京市100101 中国科学院大学北京市100049 中央财经大学校医院北京市100081

目的了解大学生生活规律性与自我损耗的关系,并探讨习惯性行为的中介作用。方法于2015年11月,采用方便抽样法在北京市中国人民大学、中央财经大学选取本科生435例进行问卷调查。问卷内容包括自我调节疲劳量表中文版、自编大学生周末生... 详细信息

目的了解大学生生活规律性与自我损耗的关系,并探讨习惯性行为的中介作用。方法于2015年11月,采用方便抽样法在北京市中国人民大学、中央财经大学选取本科生435例进行问卷调查。问卷内容包括自我调节疲劳量表中文版、自编大学生周末生活行为问卷、生活规律性自评量表,分别反映大学生的自我损耗程度、行为习惯性强度、生活规律性强度。共发放问卷435份,有效回收430份,问卷有效回收率为98.9%。结果大学生的自我损耗、生活规律性、习惯性行为得分分别为(45.8±5.3)、(7.0±1.8)、(30.9±4.2)分。女生的生活规律性得分高于男生,大三学生的习惯性行为得分高于大二学生,差异有统计学意义(P<0.05)。Pearson相关分析结果显示,自我损耗得分与生活规律性得分呈线性负相关(P<0.05),生活规律性得分与习惯性行为得分呈线性正相关(P<0.05),习惯性行为得分与自我损耗得分呈线性负相关(P<0.05)。中介效应分析结果显示,生活规律性得分是自我损耗得分的预测变量(β=-0.323,P<0.01);生活规律性得分可以正向影响习惯性行为得分(β=0.348,P<0.01);当生活规律性得分、习惯性行为得分介入模型时,习惯性行为得分对自我损耗得分有负向预测作用(β值分别为-0.278、-0.136,P<0.01)。习惯性行为得分的中介效应量占总效应量的13.8%,习惯性行为得分起部分中介作用。结论生活规律性越强的大学生自我损耗越少;生活越规律,执行习惯性行为的强度越高,习惯性行为在生活规律性和自我损耗之间起部分中介作用。

关键词：自我损耗生活规律性习惯性行为中介作用

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Inter-Skeleton Conductive Routes Tuning Multifunctional Conductive Foam for Electromagnetic Interference Shielding, Sensing and Thermal Management

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NANO-MICRO LETTERS 2025年第1期17卷 1-18页

作者： Li, Xufeng Chen, Chunyan Li, Zhenyang yi, Peng Zou, Haihan Deng, gao Fang, Ming He, Junzhe Sun, Xin Yu, Ronghai Shui, Jianglan Pan, Caofeng Liu, Xiaofang Beihang Univ Sch Mat Sci & Engn Beijing 100191 Peoples R China Beihang Univ Inst Atom Mfg Beijing 100191 Peoples R China Tianmushan Lab Xixi Octagon City Hangzhou 310023 Peoples R China Beijing Inst Environm Features Sci & Technol Electromagnet Scattering Lab Beijing 100854 Peoples R China

Unique inter-skeleton conductive films are constructed in polymer *** resistance change of the foam can reach four orders of magnitude under *** foam exhibits strain-adaptive electromagnetic interference shielding performance, anti-interference pressure sensor with high sensitivity over a wide pressure range and compression-regulated Joule heating function. Conductive polymer foam (CPF) with excellent compressibility and variable resistance has promising applications in electromagnetic interference (EMI) shielding and other integrated functions for wearable electronics. However, its insufficient change amplitude of resistance with compressive strain generally leads to a degradation of shielding performance during deformation. Here, an innovative loading strategy of conductive materials on polymer foam is proposed to significantly increase the contact probability and contact area of conductive components under compression. Unique inter-skeleton conductive films are constructed by loading alginate-decorated magnetic liquid metal on the polymethacrylate films hanged between the foam skeleton (denoted as AMLM-PM foam). Traditional point contact between conductive skeletons under compression is upgraded to planar contact between conductive films. Therefore, the resistance change of AMLM-PM reaches four orders of magnitude under compression. Moreover, the inter-skeleton conductive films can improve the mechanical strength of foam, prevent the leakage of liquid metal and increase the scattering area of EM wave. AMLM-PM foam has strain-adaptive EMI shielding performance and shows compression-enhanced shielding effectiveness, solving the problem of traditional CPFs upon compression. The upgrade of resistance response also enables foam to achieve sensitive pressure sensing over a wide pressure range and compression-regulated Joule heating function.

关键词： Inter-skeleton conductive films Conductive polymer foam Liquid metal Electromagnetic interference shielding

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Investigating Müller glia reprogramming in mice: a retrospective of the last decade, and a look to the future

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Neural Regeneration Research 2025年第4期20卷 946-959页

作者： Zhiyuan yin Jiahui Kang Xuan Cheng Hui gao Shujia Huo Haiwei Xu Key Lab of Visual Damage and Regeneration&Restoration of Chongqing Southwest Eye HospitalSouthwest HospitalThird Military Medical University(Army Medical University)ChongqingChina

Müller glia,as prominent glial cells within the retina,plays a significant role in maintaining retinal homeostasis in both healthy and diseased *** lower vertebrates like zebrafish,these cells assume responsibility for spontaneous retinal regeneration,wherein endogenous Müller glia undergo proliferation,transform into Müller glia-derived progenitor cells,and subsequently regenerate the entire retina with restored ***,Müller glia in the mouse and human retina exhibit limited neural reprogramming.Müller glia reprogramming is thus a promising strategy for treating neurodegenerative ocular disorders.Müller glia reprogramming in mice has been accomplished with remarkable success,through various *** in molecular,genetic,epigenetic,morphological,and physiological evaluations have made it easier to document and investigate the Müller glia programming process in ***,there remain issues that hinder improving reprogramming efficiency and ***,understanding the reprogramming mechanism is crucial toward exploring factors that will improve Müller glia reprogramming efficiency,and for developing novel Müller glia reprogramming *** review describes recent progress in relatively successful Müller glia reprogramming *** also provides a basis for developing new Müller glia reprogramming strategies in mice,including epigenetic remodeling,metabolic modulation,immune regulation,chemical small-molecules regulation,extracellular matrix remodeling,and cell-cell fusion,to achieve Müller glia reprogramming in mice.

关键词： cell fusion chemical small-molecules epigenetic extracellular matrix immune metabolic mice Müller glia neurodegenerative diseases reprogramming retina regeneration

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Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang Feng gao Yu-Gui Peng Peng Wu Zong-Lin Li Xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

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Self-Triggered Impulsive Control for Nonlinear Stochastic Systems

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 264-266页

作者： Tao Zhan yi Ji Yabin gao Hongyi Li Yuanqing Xia the School of Mathematics and Statistics Southwest University the School of Astronautics Harbin Institute of Technology IEEE the College of Electronic and Information Engineering Southwest University Zhongyuan University of Technology the School of Automation Beijing Institute of Technology

Dear Editor,This letter deals with the stabilization problem of nonlinear stochastic systems via self-triggered impulsive control(STIC), where the timing of impulsive control actions is not dependent on continuous state monitoring. In contrast to the existing self-triggered control method, novel self-triggered mechanism(STM) is proposed by incorporating a waiting time for stabilizing impulses. This allows for direct prediction of the next impulsive instant.

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