检索结果-南通市图书馆

Anomalous quality factor evolution of induced transparency in a virtualiz.d coupled-oscillator system

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 148-155页

作者： Yunhan yang Han Jia Tuo Liu Yuz.en yang Jun yang Key Laboratory of Noise and Vibration Research Institute of Acoustics Chinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences

The phenomenon of induced transparency, characteriz.d by a hig. quality(Q) factor, holds sig.ificant importance in the fields of hig.-precision sensing. energ. storag. and wave manipulation. Conventional transparency systems are often constrained by the limited experimentally accessible parameter space and the lack of independent control over intrinsic parameters, thereby hindering.advanced research on hig.-Q effects. Here we propose a virtualiz.d coupled-oscillator system that enables reconfig.rable induced transparency in the reflection spectrum. By virtually incorporating.a pair of coupled oscillators into an individual acoustic meta-atom, we achieve the manipulation of induced transparency in a decoupled, wide-rang.ng. and elaborate manner. Exploiting.the diverse evolutions across the intrinsic parameter space, we show experimentally a counter-intuitive increase in the Q-factor of the transparency window, which is attributed to the enhanced dissipation of the brig.t ***, a constant g.oup delay at the center frequency is observed accompanying.this evolution. Our work demonstrates an intrig.ing.platform as well as a novel strateg. to eng.neer hig.-Q induced transparency phenomenon, and paves the way towards applications in prog.ammable acoustic sensors, filters and slow-wave devices.

关键词： induced transparency acoustic meta-atom hig. quality-factor scattering prog.ammable intrinsic parameter

Polyethylene g.ycol fusion repair of severed rat sciatic nerves reestablishes axonal continuity and reorg.niz.s sensory terminal fields in the spinal cord

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Reg.neration Research 2025年第7期20卷 2095-2107页

作者： Emily A.Hibbard Liwen z.ou Cathy z.yang Karthik Venkudusamy Yessenia Montoya Alexa Olivarez.g.org. D.Bittner Dale R.Seng.laub Prog.am in Neuroscience Indiana UniversityBloomingtonINUSA Department of Neuroscience University of Texas at AustinAustinTXUSA

Peripheral nerve injuries result in the rapid deg.neration of distal nerve seg.ents and immediate loss of motor and sensory functions;behavioral recovery is typically *** used a plasmalemmal fusog.n,polyethylene g.ycol(PEg.,to immediately fuse closely apposed open ends of severed proximal and distal axons in rat sciatic *** have previously reported that sciatic nerve axons repaired by PEg.fusion do not underg. Wallerian deg.neration,and PEg.fused animals exhibit rapid(within 2–6 weeks)and extensive locomotor ***,our previous report showed that PEg.fusion of severed sciatic motor axons was non-specific,i.e.,spinal motoneurons in PEg.fused animals were found to project to appropriate as well as inappropriate targ.t *** this study,we examined the consequences of PEg.fusion for sensory axons of the sciatic *** adult male and female rats(Sprag.e–Dawley)received either a unilateral sing.e cut or ablation injury to the sciatic nerve and subsequent repair with or without(Neg.tive Control)the application of *** action potentials recorded immediately after PEg.fusion repair confirmed conduction across the injury *** success of PEg.fusion was confirmed throug. Sciatic Functional Index testing.with PEg.fused animals showing.improvement in locomotor function beg.nning.at 35 days *** 2–42 days postoperatively,we anterog.adely labeled sensory afferents from the dorsal aspect of the hindpaw following.bilateral intradermal injection of wheat g.rm ag.lutinin conjug.ted horseradish ***-fusion repair reestablished axonal *** to unoperated animals,labeled sensory afferents ipsilateral to the injury in PEg.fused animals were found in the appropriate area of the dorsal horn,as well as inappropriate mediolateral and rostrocaudal ***,despite having.intact peripheral nerves,similar reorg.niz.tions of labeled sensory afferents were also observed contralateral to the injury and repa

关键词： axotomy dorsal horn peripheral nerve injury plasticity polyethylene g.ycol(PEg. sciatic nerve sensory terminals wheat g.rm ag.lutinin horseradish peroxidase

Polyethylene g.ycol has immunoprotective effects on sciatic allog.afts, but behavioral recovery and g.aft tolerance require neurorrhaphy and axonal fusion

在线全文

学校读者我要写书评

暂无评论

Neural Reg.neration Research 2025年第4期20卷 1192-1206页

作者： Tyler A.Smith Liwen z.ou Cameron L.g.erg.erehchi Michelle Mikesh Cathy z.yang Haley O.Tucker JuliAnne Allg.od Jared S.Bushman g.org. D.Bittner Department of Molecular Biosciences University of Texas at AustinAustinTXUSA Department of Neuroscience University of Texas at AustinAustinTXUSA Division of Pharmaceutical Sciences University of WyomingLaramieWYUSA

Behavioral recovery using.viable)peripheral nerve allog.afts to repair ablation-type(seg.ental-loss)peripheral nerve injuries is delayed or poor due to slow and inaccurate axonal ***,such peripheral nerve allog.afts underg. immunolog.cal rejection by the host immune *** contrast,peripheral nerve injuries repaired by polyethylene g.ycol fusion of peripheral nerve allog.afts exhibit excellent behavioral recovery within weeks,reduced immune responses,and many axons do not underg. Wallerian *** relative contribution of neurorrhaphy and polyethylene g.ycol-fusion of axons versus the effects of polyethylene g.ycol per se was unknown prior to this *** hypothesiz.d that polyethylene g.ycol mig.t have some immune-protective effects,but polyethylene g.ycol-fusion was necessary to prevent Wallerian deg.neration and functional/behavioral *** examined how polyethylene g.ycol solutions per se affect functional and behavioral recovery and peripheral nerve allog.aft morpholog.cal and immunolog.cal responses in the absence of polyethylene g.ycol-induced axonal ***-type sciatic nerve injuries in outbred Sprag.e–Dawley rats were repaired according.to a modified protocol using.the same solutions as polyethylene g.ycol-fused peripheral nerve allog.afts,but peripheral nerve allog.afts were loose-sutured(loose-sutured polyethylene g.ycol)with an intentional g.p of 1–2 mm to prevent fusion by polyethylene g.ycol of peripheral nerve allog.aft axons with host *** to neg.tive control peripheral nerve allog.afts not treated by polyethylene g.ycol and in contrast to polyethylene g.ycol-fused peripheral nerve allog.afts,animals with loose-sutured polyethylene g.ycol peripheral nerve allog.afts exhibited Wallerian deg.neration for all axons and myelin deg.neration by 7 days postoperatively and did not recover sciatic-mediated behavioral functions by 42 days *** morpholog.cal sig.s of rejection,such as col

关键词： allog.aft rejection axotomy macrophag. myelin nerve repair polyethylene g.ycol(PEg. sciatic nerve T cell transplantation Wallerian deg.neration

Targ.ting.epig.netic mechanisms in amyloid-β-mediated Alz.eimer’s pathophysiolog.:unveiling.therapeutic potential

在线全文

学校读者我要写书评

暂无评论

Neural Reg.neration Research 2025年第1期20卷 54-66页

作者： Jennie z.Li Nag.ndran Ramaling.m Shaomin Li Ann Romney Center for Neurolog.c Diseases Brigham and Women’s Hospital and Harvard Medical SchoolBostonMAUSA

Alz.eimer’s disease is a prominent chronic neurodeg.nerative condition characteriz.d by a g.adual decline in memory leading.to *** evidence sug.ests that Alz.eimer’s disease is associated with accumulating.various amyloid-βolig.mers in the brain,influenced by complex g.netic and environmental *** memory and cog.itive deficits observed during.the prodromal and mild cog.itive impairment phases of Alz.eimer’s disease are believed to primarily result from synaptic *** life,environmental factors can lead to enduring.chang.s in g.ne expression and the emerg.nce of brain *** chang.s,known as epig.netic modifications,also play a crucial role in reg.lating.the formation of synapses and their adaptability in response to neuronal *** this context,we hig.lig.t recent advances in understanding.the roles played by key components of the epig.netic machinery,specifically DNA methylation,histone modification,and microRNAs,in the development of Alz.eimer’s disease,synaptic function,and activity-dependent synaptic ***,we explore various strateg.es,including.enriched environments,exposure to non-invasive brain stimulation,and the use of pharmacolog.cal ag.nts,aimed at improving.synaptic function and enhancing.long.term potentiation,a process integ.al to epig.netic ***,we deliberate on the development of effective epig.netic ag.nts and safe therapeutic approaches for manag.ng.Alz.eimer’s *** sug.est that addressing.Alz.eimer’s disease may require distinct tailored epig.netic drug. targ.ting.different disease stag.s or pathways rather than relying.on a sing.e drug.

关键词： Alz.eimer’s disease DNA methylation enriched environments histone modification microRNAs non-invasive brain stimulation synaptic plasticity

Polyethylene g.ycol fusion repair of severed sciatic nerves accelerates recovery of nociceptive sensory perceptions in male and female rats of different strains

在线全文

学校读者我要写书评

暂无评论

Neural Reg.neration Research 2025年第9期20卷 2667-2681页

作者： Liwen z.ou Karthik Venkudusamy Emily A.Hibbard Yessenia Montoya Alexa Olivarez.Cathy z.yang Adelaide Leung.Varun g.khale g.han Periyasamy z.al Pathak Dale R.Seng.laub g.org. D.Bittner Department of Neuroscience University of TexasAustinTXUSA Prog.am in Neuroscience Indiana UniversityBloomingtonINUSA Department of Molecular Biosciences University of TexasAustinTXUSA

Successful polyethylene g.ycol fusion(PEg.fusion)of severed axons following.peripheral nerve injuries for PEg.fused axons has been reported to:(1)rapidly restore electrophysiolog.cal continuity;(2)prevent distal Wallerian Deg.neration and maintain their myelin sheaths;(3)promote primarily motor,voluntary behavioral recoveries as assessed by the Sciatic Functional Index;and,(4)rapidly produce correct and incorrect connections in many possible combinations that produce rapid and extensive recovery of functional peripheral nervous system/central nervous system connections and reflex(e.g.,toe twitch)or voluntary *** preceding.companion paper describes sensory terminal field reo rg.niz.tion following.PEg.fusion repair of sciatic nerve transections or ablations;howeve r,sensory behavioral recovery has not been explicitly explored following.PEg.fusion *** the current study,we confirmed the success of PEg.fusion surg.ries according.to criteria(1-3)above and more extensively investig.ted whether PEg.fusion enhanced mechanical nociceptive recovery following.sciatic transection in male and female outbred Sprag.e-Dawley and inbred Lewis *** nociceptive responses were assessed by measuring.withdrawal thresholds using.von Frey filaments on the dorsal and midplantar reg.ons of the *** von Frey filament tests were a more reliable method than plantar von Frey filament tests to assess mechanical nociceptive sensitivity following.sciatic nerve *** withdrawal thresholds of the sciatic-mediated lateral dorsal reg.on differed sig.ificantly across strain but not *** thresholds did not chang. sig.ificantly from baseline in chronic Unoperated and Sham-operated *** sciatic transection,all rats exhibited severe hyposensitivity to stimuli at the lateral dorsal reg.on of the hindpaw ipsilateral to the ***,PEg.fused rats exhibited sig.ificantly earlier return to baseline withdrawal thresholds than Neg.tive

关键词： autophag.a axotomy collateral sprouting neuropathic pain peripheral nerve repair polyethylene g.ycol fusion(PEg.fusion) saphenous nerve sensory neurons sex and strain Wallerian deg.neration

Hig.-temperature-tolerant flexible supercapacitors: g.l polymer electrolytes and electrode materials

在线全文

学校读者我要写书评

暂无评论

Journal of Energ. Chemistry 2025年第1期100卷 426-457页

作者： Chong.Peng.Xinyi Huang.Ming.ei z.ao Shuling.Liao Quanhong.yang Nianjun yang Siyu Yu School of Chemistry & Chemical Eng.neering Southwest University Nanoyang g.oup Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage School of Chemical Engineering and Technology and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin University Department of Chemistry & IMO-IMOMEC Hasselt University

The development of flexible supercapacitors(FSCs) capable of operating.at hig. temperatures is crucial for expanding.the application areas and operating.conditions of supercapacitors. g.l polymer electrolytes and electrode materials stand as two key components that sig.ificantly impact the efficacy of hig.temperature-tolerant FSCs(HT-FSCs). They should not only exhibit hig. electrochemical performance and excellent flexibility, but also withstand intense thermal stress. Considerable efforts have been devoted to enhancing.their thermal stability while maintaining.hig. electrochemical and mechanical performance. In this review, the fundamentals of HT-FSCs are outlined. A comprehensive overview of state-of-the-art prog.ess and achievements in HT-FSCs, with a focus on thermally stable g.l polymer electrolytes and electrode materials is provided. Finally, challeng.s and future perspectives reg.rding.HT-FSCs are discussed, along.ide strateg.es for elevating.operational temperatures and *** review offers both theoretical foundations and practical g.idelines for desig.ing.and manufacturing.HT-FSCs, further promoting.their widespread adoption across diverse fields.

关键词： Polymer membrane electrodes

Preparation of Low Ratio Mag.esium Ccement by Acid Leaching.Treatment of Boron Mud

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technolog.(Materials Science) 2025年第1期40卷 120-129页

作者： yang Mei z.ANg.Ming.1}e CHEN Hao School of Materials Science and Eng.neering Shenyang Jianzhu UniversityShenyang 110168China School of Physical Science and Technolog. Shenyang Normal UniversityShenyang 110168China

The effects of liquid-solid ratio and reaction time on the leaching.rate of mag.esium at room temperature were investig.ted,as well as the effects of the molar ratio of Mg./Mg.l_(2),the amount of water added,and the amount of acid-impreg.ated slag.dosed on the compressive streng.h and water resistance of *** results showed that the mag.esium element in the boron mud could be maximally leached under the conditions of 1:1 concentration of hydrochloric acid at room temperature,liquid-solid ratio of 2.5 mL·g.(-1),and reaction time of 5 h,and the main products were amorphous SiO_(2) as well as a small amount of mag.esium olivine which had not been completely *** LR-MOC prepared using.the acid-soaked mixture could reach a softening.coefficient of 0.85 for 28 d of water immersion when the molar ratio of Mg./Mg.l_(2) was 2.2,the amount of water added was 0 g.and the acid-soaked slag.dosing.was 40 wt%,which also led to an appreciable late-streng.h,with an increase of 19.4%in compressive streng.h at 28 d compared to that at 7 *** previous studies,LR-MOC prepared in this way has a final streng.h phase that is not the more easily hydrolysed 3-phase but the lath-like *** this phenomenon,we analyz.d the mechanism and found that,during.the acid leaching.process,a part of amorphous SiO_(2) dissolved in the acid leaching.solution formed a silica sol,in which Mg.(2+)played a bridg.ng.role to make the silica sol more *** the addition and hydrolysis of Mg.,the silica sol g.l coag.lation slows down,providing.a capping.layer to inhibit the hydrolysis of the 5-phase crystals and providing.some streng.h after *** amorphous SiO_(2) in the other part of the acid-impreg.ated slag.g.nerated M-S-H g.l with Mg.(2+)and OH-,which synerg.sed with the dense structure composed of interlocking.crystals to improve the water resistance of LR-MOC.

关键词： boron mud mag.esium chloride-oxyg.n cement acid immersion water resistance silica sol

A surface eng.neering.strateg. for the stabiliz.tion of z.nc metal anodes with montmorillonite layers toward long.life recharg.able aqueous z.nc ion batteries

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energ. Chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang.Ruifeng.Xu Xu z.ang.Peiyu Wang.Bao yang Bing.un yang Juan yang Kailimai Su Peng.un Ma Yanan Deng.Xianfeng.Fan Wanjun Chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource Chemistry and Energ. Materials Research Center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Recharg.able aqueous z.nc-ion batteries （Az.Bs） exhibit appreciable potential in the domain of electrochemical energ. ***,there are serious challeng.s for Az.Bs,for instance z.nc dendrite g.owth,hydrog.n evolution reaction （HER）,and corrosion side ***,we propose a surface eng.neering.modification strateg. for coating.the montmorillonite （MMT） layer onto the surface of the z. anode to tackle these issues,thereby achieving.hig. cycling.stability for recharg.able *** results reveal that the MMT layer on the surface of the z. anode is able to provide ordered z.ncophilic channels for z.nc ions mig.ation,facilitating.the reaction kinetics of z.nc *** functional theory（DFT） calculations and water contact ang.e （CA） tests prove that MMT@z. anode exhibits superior adsorption capacity for z.2+and better hydrophobicity than the bare z. anode,thereby achieving.excellent cycling.***,the MMT@z.||MMT@z. symmetric cell holds the stable cycling.over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding.1800 h long.cycling.under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@z.||V2O5full cell reaches over 3000 cycles at 2 A g.1with excellent rate ***,this surface eng.neering.modification strateg. for enhancing.the electrochemical performance of Az.Bs represents a promising.application.

关键词： Hydrog.n evolution reaction

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

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

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 Reg.onal 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 Reg.on Department of Atmospheric ScienceYunnan UniversityKunmingChina

El Niño-Southern Oscillation(ENSO)is a major driver of climate chang. in middle and low latitudes and thus strong.y influences the terrestrial carbon cycle throug. land-air *** the ENSO modulation and carbon flux variability are projected to increase in the future,but their connection still needs further *** investig.te the impact of future ENSO modulation on carbon flux variability,this study used 10 CMIP6 earth system models to analyz. ENSO modulation and carbon flux variability in middle and low latitudes,and their relationship,under different scenarios simulated by CMIP6 *** results show a hig. consistency in the simulations,with both ENSO modulation and carbon flux variability showing.an increasing.trend in the *** hig.er the emissions scenario,especially SSP5-8.5 compared to SSP2-4.5,the g.eater 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 sug.ests that ENSO influences mid-and low-latitude carbon flux variability primarily throug. *** occurrence may potentially be attributed to the increased responsiveness of g.oss primary productivity towards reg.onal temperature fluctuations,combined with the intensified influence of ENSO on land surface temperatures.

关键词： Carbon variability ENSO modulation CMIP6 models