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Electrochemical conversion of methane to brid.e the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanx.u xiao Wei xiao d. Hu Guox.ong Wang College of Chemistry and.Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University d.partment of Chemical and.Environmental Engineering University of Nottingham Ningbo China

Methane, an abund.nt one-carbon（C1） resource, is ex.ensively used.in the ind.strial prod.ction of vital fuels and.value-ad.ed.chemicals. However, current ind.strial methane conversion technologies are energy-and.carbon-intensive, mainly d.e to the high activation energy required.to break the inert C–H bond. low selectivity, and.problematic sid. reactions, includ.ng CO2emissions and.coke d.position. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, d.e to its mod.lar reactor d.sign and.operational flex.bility across a broad.spectrum of temperatures and.pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and.ad.antages of ECM in facilitating a sustainable artificial carbon cycle. This work provid.s a comprehensive overview of conventional methane activation mechanisms and.d.lineates the complete pathways of methane conversion in electrolysis contex.s. Based.on surface/interface chemistry, this work systematically analyzes proposed.reaction pathways and.correspond.ng strategies to enhance ECM efficiency toward. various target prod.cts, includ.ng syngas, hyd.ocarbons, ox.genates, and.ad.anced.carbon materials. The d.scussion also encompasses opportunities and.challenges for the ECM process, includ.ng insights into ECM pathways, rational electrocatalyst d.sign, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and.minimization of CO2emission.

关键词： Activation energy

The Hilbert ex.ansion of the Boltzmann equation in the incompressible Euler level in a channel

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Science China Mathematics 2025年第1期68卷 39-88页

作者： Feimin Huang Weiqiang Wang Yong Wang Feng xiao Acad.my of Mathematics and.Systems Science Chinese Academy of Sciences School of Mathematical Sciences University of Chinese Academy of Sciences Key Laboratory of Computing and.Stochastic Mathematics (Ministry of Ed.cation) School of Mathematics and StatisticsHunan Normal University

The stud. of the hyd.od.namic limit of the Boltzmann equation with physical bound.ry is a challenging problem d.e to the appearance of the viscous and.Knud.en bound.ry *** this paper,the hyd.od.namic limit from the Boltzmann equation with the specular reflection bound.ry cond.tion to the incompressible Euler equations in a channel is *** on the multi-scaled.Hilbert ex.ansion,the equations with bound.ry cond.tions and.compatibility cond.tions for interior solutions,and.viscous and.Knud.en bound.ry layers are d.rived.und.r d.fferent scaling,***,some uniform estimates for the interior solutions,and.viscous and.Knud.en bound.ry layers are *** the help of the L2-L∞framework and.the uniform estimates obtained.above,the solutions to the Boltzmann equation are constructed.by the truncated.Hilbert ex.ansion with multiscales,and.hence the hyd.od.namic limit in the incompressible Euler level is justified.

关键词： Boltzmann equation incompressible Euler equations hyd.od.namic limit Hilbert ex.ansion specular reflection bound.ry cond.tion viscous bound.ry layer Knud.en bound.ry layer

Ex.erimental Stud. on Geometry Characteristics of Turbulent Premix.d.Flames for Natural Gas/Air Mix.ures

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Journal of Thermal Science 2025年第1期34卷 268-282页

作者： ZHENG Weilin WANG Qijiao xiao Huahua CHEN xiaoxiao x.E Fan ZENG Wen Liaoning Key Lab of Ad.anced.Test Technology for Aerospace Propulsion System Shenyang Aerospace University State Key Laboratory of Fire Science University of science and Technology of China AVIC Shenyang Aircraft d.sign and.Research Institute

In this stud.,focusing on the geometry characteristics of spherical ex.and.ng flame,the turbulent premix.d.flames of natural gas/air mix.ures were investigated.in a fan-stirred.turbulent *** effects of initial temperature（T=300-400 K）,initial pressure（P=0.1-0.3 MPa）,turbulence intensity（u'=1.0-2.7 m/s）,ox.gen volumetric percentage(φ（O2）=15%-21%) and.carbon d.ox.d. volumetric percentage(φ（CO2）=0-20%)were d.lved.*** flame profile und.r the Cartesian coord.nate system was d.rived.from the schlieren images taken by the high-speed.***,from both macroscopic and.microscopic perspectives,the influence of ex.erimental cond.tions on the flame geometry characteristics was ex.lored.through flame front ex.raction,wavelet d.composition and.network *** results d.monstrate that for significant flame wrinkling,changes in species concentrations and.turbulence intensity have more pronounced.effects on the flame wrinkling *** wrinkling of the flame front maintains a certain d.gree of similarity,as evid.nced.by the locally concentrated.d.stribution of the angles of the max.mum fluctuation *** d.sturbance energy und.r large-scale（d.-d.） d.sturbances ex.ibits relatively high values with a similar trend.ex.rting a significant impact on the geometry characteristics of the flame *** peaks of correlation d.gree are scattered.either with the d.composition scale or the d.velopment of flame rad.us,ind.cating no linear correlation between d.fferent d.tail ***,the probability d.stribution of nod. d.grees in key wrinkled.regions ex.ibits d.fferent trend. with that of large-scale wrinkling and.d.sturbance energy,especially with changes in initial *** occurs because the number of key wrinkles varies based.on the perturbation's strength or the region's ***,an increase in the fluctuation frequency of the flame's local rad.us may not necessarily lead.to an increase in the number of key fold.d.regions.

关键词： fan-stirred.turbulent combustor geometry characteristics large-scale wrinkling network topology wavelet d.composition

End.plasmic 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 Yix.n Li Ting Zhang Yanlin Fu Peiyan Long xiao Gao Zhengwei Wang Zhizhong Guan xiaolan Qi Wei Hong Yan xiao Key Laboratory of End.mic and.Ethnic d.seases Ministry of Education&Key Laboratory of Medical Molecular Biology of Guizhou ProvinceGuizhou Medical UniversityGuiyangGuizhou ProvinceChina Guizhou Center for d.sease Control and.Prevention GuiyangGuizhou ProvinceChina d.partment of Histology and.Embryology Guizhou Medical UniversityGuiyangGuizhou ProvinceChina Collaborative Innovation Center for Prevention and.Control of End.mic and.Ethnic Regional d.seases Co-constructed.by the Province and.Ministry GuiyangGuizhou ProvinceChina

Several stud.es have shown that activation of unfold.d.protein response and.end.plasmic 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 stud.,we established.ex.erimental mod.ls using ox.gen-glucose d.privation/reox.genation in PC12 cells and.primary neurons to simulate cerebral ischemia/reperfusion *** found.that prolongation of ox.gen-glucose d.privation activated.the ER stress pathway protein kinase-like end.plasmic 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.ind.ced.***,inhibition of ER stress using inhibitors or by si RNA knockd.wn of the PERK gene significantly attenuated.ex.essive autophagy and.neuronal apoptosis,ind.cating an interaction between autophagy and.ER stress and.suggesting PERK as an essential target for regulating *** autophagy with chloroquine ex.cerbated.ER stress-ind.ced.apoptosis,ind.cating that normal levels of autophagy play a protective role in neuronal injury following cerebral ischemia/reperfusion *** from this stud. ind.cate that cerebral ischemia/reperfusion injury can trigger neuronal ER stress and.promote autophagy,and.suggest that PERK is a possible target for inhibiting ex.essive autophagy in cerebral ischemia/reperfusion injury.

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

Highly cond.ctive and.stable iod.ne d.ped.argyrod.te electrolyte for all-solid.state lithium batteries

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Journal of Energy Chemistry 2025年第1期100卷 50-58页

作者： Gaozhan Liu Jing Zhang Jing Yang Jinghui Chen x.ngyue xiao x.ayin Yao Ningbo Institute of Materials Technology and.Engineering Chinese Academy of Sciences Center of Materials Science and.Optoelectronics Engineering University of Chinese Academy of Sciences

Lithium argyrod.tes with high ionic cond.ctivity and.low cost are consid.red.as one of the most prospective solid.electrolytes for all-solid.state lithium ***,the poor chemical stability and.compatibility with lithium metal limit their ***,Li5.4PS4.4Cl1.4I0.2solid.electrolyte with high ionic cond.ctivity of 11.49 m S cm-1and.improved.chemical stability is synthesized.by iod.ne *** ultra-thin Li5.4PS4.4Cl1.4I0.2membrane with thickness of 10μm can be obtained.by wet coating process,ex.ibiting a high ionic cond.ctivity of 2.09 mS cm-1and.low areal resistance of 1.17Ω***,iod.ne d.ping could.in-situ form LiI at the lithium/electrolyte interface and.improve the critical current d.nsity of Li5.4PS4.4Cl1.6from 0.8 to 1.35 mA *** resultant LiCoO2/Li5.4PS4.4Cl1.4I0.2/Li battery shows ex.ellent cycling stability at 1 C,with a reversible specific capacity of 110.1 mA h g-1and.a retention of 80.5% after 1000 *** ad.ition,the assembled.LiCoO2/Li5.4PS4.4Cl1.4I0.2membrane/Li pouch cell d.livers an initial d.scharge capacity of 110.4 mA h g-1and.80.5% capacity retention after 100 cycles.

关键词： Solid.State Batteries

Effects of the ex.rusion parameters on microstructure,tex.ure and.room temperature mechanical properties of ex.rud.d.Mg-2.49Nd.1.82Gd.0.2Zn-0.2Zr alloy

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International Journal of Minerals,Metallurgy and.Materials 2025年第1期32卷 136-146页

作者： Chenjin Zhang Guangyu Yang Lei xiao Zhiyong Kan Jing Guo Qiang Li Wanqi Jie State Key Laboratory of Solid.fication Processing Northwestern Polytechnical UniversityXi’an 710072China College of Materials Science and.Engineering Fuzhou UniversityFuzhou 350108China College of Chemistry and.Environmental Science Qujing Normal UniversityQujing 655011China

Microstructure,tex.ure,and.mechanical properties of the ex.rud.d.Mg-2.49Nd.1.82Gd.0.2Zn-0.2Zr alloy were investigated.at d.fferent ex.rusion temperatures(260 and.320℃),ex.rusion ratios(10:1,15:1,and.30:1),and.ex.rusion speed.(3 and.6 mm/s).The ex.erimental results ex.ibited.that the grain sizes after ex.rusion were much finer than that of the homogenized.alloy,and.the second.phase showed.streamline d.stribution along the ex.rusion d.rection(Ed..With ex.rusion temperature increased.from 260 to 320℃,the microstructure,tex.ure,and.mechanical properties of alloys changed.*** d.namic recrystallization(d.x.d.gree and.grain sizes enhanced.as the ex.rusion ratio increased.from 10:1 to 30:1,and.the strength grad.ally d.creased.but elongation(EL)*** the ex.rusion speed.increased.from 3 to 6 mm/s,the grain sizes and.d.x.d.gree increased.significantly,and.the samples presented.the typical-rare-earth(RE)*** alloy ex.rud.d.at 260℃ with ex.rusion ratio of 10:1 and.ex.rusion speed.of 3 mm/s showed.the tensile yield.strength(TYS)of 213 MPa and.EL of 30.6%.After quantitatively analyzing the contribution of strengthening mechanisms,it was found.that the grain bound.ry strengthening and.d.slocation strengthening played.major roles among strengthening *** results provid. some guid.lines for enlarging the ind.strial application of ex.rud.d.Mg-RE alloy.

关键词： Mg-rare earth alloys ex.rusion temperature ex.rusion ratio ex.rusion speed strengthening mechanisms

Increased.ex.itatory amino acid.transporter 2 levels in basolateral amygd.la astrocytes med.ate chronic stress–ind.ced.anx.ety-like behavior

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Neural Regeneration Research 2025年第6期20卷 1721-1734页

作者： x.rong x. Shoumin x.an Shuai Chen d.n Liu Qian xiao Jie Tu Shenzhen Key Laboratory of Neuroimmunomod.lation for Neurological d.seases Shenzhen-Hong Kong Institute of Brain ScienceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina CAS Key Laboratory of Brain Connectome and.Manipulation Brain Cognition and Brain Disease Institute(BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina Guangd.ng Provincial Key Laboratory of Brain Connectome and.Behavior the Brain Cognition and Brain Disease Institute(BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina University of Chinese of Acad.my of Sciences BeijingChina Faculty of Life and.Health Sciences Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina

The conventional perception of astrocytes as mere supportive cells within the brain has recently been called.into question by empirical evid.nce, which has revealed.their active involvement in regulating brain function and.encod.ng behaviors associated.with ***, astrocytes in the basolateral amygd.la have been found.to play a role in the mod.lation of anx.ety-like behaviors triggered.by chronic stress. Nevertheless, the precise molecular mechanisms by which basolateral amygd.la astrocytes regulate chronic stress–ind.ced.anx.ety-like behaviors remain to be fully elucid.ted. In this stud., we found.that in a mouse mod.l of anx.ety triggered.by unpred.ctable chronic mild.stress, the ex.ression of ex.itatory amino acid.transporter 2 was upregulated.in the basolateral amygd.la. Interestingly, our find.ngs ind.cate that the targeted.knockd.wn of ex.itatory amino acid.transporter 2 specifically within the basolateral amygd.la astrocytes was able to rescue the anx.ety-like behavior in mice subjected.to stress. Furthermore, we found.that the overex.ression of ex.itatory amino acid.transporter 2 in the basolateral amygd.la, whether achieved.through intracranial ad.inistration of ex.itatory amino acid.transporter 2agonists or through injection of ex.itatory amino acid.transporter 2-overex.ressing viruses with GfaABC1d.promoters, evoked.anx.ety-like behavior in mice. Our single-nucleus RNA sequencing analysis further confirmed.that chronic stress ind.ced.an upregulation of ex.itatory amino acid.transporter 2 specifically in astrocytes in the basolateral amygd.la. Moreover, through in vivo calcium signal record.ngs, we found.that the frequency of calcium activity in the basolateral amygd.la of mice subjected.to chronic stress was higher compared.with normal *** knocking d.wn the ex.ression of ex.itatory amino acid.transporter 2 in the basolateral amygd.la, the frequency of calcium activity was not significantly increased. and.anx.ety-like behavior was ob

关键词： anx.ety astrocytes basolateral amygd.la behavior d.hyd.okainic acid ex.itatory amino acid.transporter 2 fiber photometry glutamate Ld.-212320 transporter

Observation of acoustic hybrid.topological phases ind.ced.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 x.ang Feng Gao Yu-Gui Peng Peng Wu Zong-Lin Li x.e-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 field.,which red.fine the fund.mental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge field. have been commonly investigated.in single orbital systems,and.ex.lorations on hybrid.orbitals remain elusive in ***,we report the ex.erimental observation of hybrid.topological phases ind.ced.by hybrid.synthetic gauge flux.which is formed.by the interaction between p and.d.orbitals embed.ed.in acoustic *** breaking the translation symmetries of Lx.nd.or Ly,we unambiguously d.monstrate the first-ord.r M?bius ed.e states and.higher-ord.r corner *** work establishes a platform for seeking ex.tic topological phases ind.ced.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 d.e to the stepwise energy d.stribution of the hybrid.topological phase.

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

Graphene Aerogel Composites with Self‑Organized.Nanowires‑Packed.Honeycomb Structure for Highly Efficient Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 533-547页

作者： xiao You Huiying Ouyang Ruix.ang d.ng Qiuqi Zhang Zhenzhong x.ng xiaowu Chen Qingliang Shan Jinshan Yang Shaoming d.ng State Key Laboratory of High Performance Ceramics and.Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Key Laboratory of Inorganic Coating Materials CAS Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Structural Ceramics and.Composites Engineering Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Center of Materials Science and.Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physical Science and.Technology ShanghaiTech UniversityShanghai 201210People’s Republic of China School of Materials Science and.Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China University of Chinese Acad.my of Sciences Beijing 100039People’s Republic of China

With vigorous d.velopments in nanotechnology,the elaborate regulation of microstructure shows attractive potential in the d.sign of electromagnetic wave ***,a hierarchical porous structure and.composite heterogeneous interface are constructed.successfully to optimize the electromagnetic loss *** macro–micro-synergistic graphene aerogel formed.by the ice template‑assisted.3d.printing strategy is cut by silicon carbid. nanowires(SiC_(nws))grown in situ,while boron nitrid.(BN)interfacial structure is introd.ced.on graphene *** unique composite structure forces multiple scattering of incid.nt EMWs,ensuring the combined.effects of interfacial polarization,cond.ction networks,and.magnetic-d.electric ***,the as-prepared.composites present a minimum reflection loss value of−37.8 d. and.a wid. effective absorption band.id.h(EAB)of 9.2 GHz(from 8.8 to 18.0 GHz)at 2.5 ***,relying on the intrinsic high-temperature resistance of SiC_(nws) and.BN,the EAB also remains above 5.0 GHz after annealing in air environment at 600℃ for 10 h.

关键词： Hierarchical porous structure Interface High-temperature resistance Graphene aerogel composites Electromagnetic wave absorption