Taking Jakobson’s terminology and classification of translation as its starting point,this paper probes into many classic literary works’interrelationship with their imagery adaptations,discusses a reconciliation of...Taking Jakobson’s terminology and classification of translation as its starting point,this paper probes into many classic literary works’interrelationship with their imagery adaptations,discusses a reconciliation of different genres without sacrificing the loss of their respective strength.This paper also draws support from other scholars’discussion of originality and intertextuality to land on a conclusion:it is fully possible to reconcile different artistic genres,and this reconciliation will,as Benjamin put it,lead to the"afterlife"of a literary work.展开更多
Translation has so far dominated the discussions of world literature.While some like David Damrosch emphasize the role of translation in the dissemination of a literary work beyond its native context,others are critic...Translation has so far dominated the discussions of world literature.While some like David Damrosch emphasize the role of translation in the dissemination of a literary work beyond its native context,others are critical about the dominance of English as well as some other European languages in the process of literary translations.In the meantime,the cross-cultural transmission of literature takes place via different media and across media.With the rapid progress of technology and performance art,film,television,animation,and video games have empowered the transmission of literature.Regarding translation,intermedial practices,and world literature,certain questions need to be addressed:What is the relationship between translingual and crosscultural communication mediated by translation,and the intermedial dissemination of literature?Does literary translation facilitate the intermedial transmission of literature?Conversely,how does the intermedial spread of literature impact translation?While world literature remains inseparable from translation,it has now entered a new era of intermedial dissemination.Consequently,the study of world literature must transcend the translation paradigm and integrate both translation and intermedial perspectives to better conceptualize and understand the nature of world literature.Two typical examples are further discussed,namely,the global circulation of Henrik Ibsen’s works,with a focus on their reception in China,and the international dissemination of Journey to the West,particularly highlighting the role of the recent video game Black Myth:Wukong in amplifying the global reach of this literary classic.展开更多
Ambient-air,moisture-assisted annealing is widely used in fabricating perovskite solar cells(PSCs).However,the inherent sensitivity of perovskite intermediate-phase to moisture—due to fast and spontaneous intermolecu...Ambient-air,moisture-assisted annealing is widely used in fabricating perovskite solar cells(PSCs).However,the inherent sensitivity of perovskite intermediate-phase to moisture—due to fast and spontaneous intermolecular exchange reaction—requires strict control of ambient humidity and immediate thermal annealing treatment,raising manufacturing costs and causing fast nucleation of perovskite films.We report herein a self-buffered molecular migration strategy to slow down the intermolecular exchange reaction by introducing a n-butylammonium bromide shielding layer,which limits moisture diffusion into intermediate-phase film.This further endows the notably wide nucleation time and humidity windows for perovskite crystallization in ambient air.Consequently,the optimized 1.68 e V-bandgap n-i-p structured PSC reaches a record-high reverse-scan(RS)PCE of 22.09%.Furthermore,the versatility and applicability of as-proposed self-buffered molecular migration strategy are certified by employing various shielding materials and 1.53 eV-/1.77 eV-bandgap perovskite materials.The n-i-p structured PSCs based on 1.53 eV-and 1.77 eV-bandgap perovskite films achieve outstanding RS PCEs of 25.23%and 19.09%,respectively,both of which are beyond of the state-of-the-art ambient-air processed PSCs.展开更多
Literature adapts following the changes of its objects,as do all arts.However,while fictional characters and context can be said to have equivalents in people and society,the same cannot be said about the literature f...Literature adapts following the changes of its objects,as do all arts.However,while fictional characters and context can be said to have equivalents in people and society,the same cannot be said about the literature form itself.Especially with the advent of the internet,this transformations in literature seem more visible:it has become spread in the cloud,surpassing its boundaries and mixing with the profusion of voices of the cyberspace.Intermediality,in addition to its theories about the intermedial phenomena,has become a methodology or even a pathway to understand arts.This paper presents part of an extensive analysis of a corpus formed by contemporary Brazilian literature,in order to describe different manifestations on how the"mediatized society"appears through the literature forms,from the Media Culture to today.展开更多
OBJECTIVE:To reveal the antidepressant mechanisms of Jiawei DanZhiXiaoYaoSan(加味丹栀逍遥散,JD)in chronic unpredictable mild stress(CUMS)-induced depression in mice.METHODS:Using the CUMS mouse model of depression,the...OBJECTIVE:To reveal the antidepressant mechanisms of Jiawei DanZhiXiaoYaoSan(加味丹栀逍遥散,JD)in chronic unpredictable mild stress(CUMS)-induced depression in mice.METHODS:Using the CUMS mouse model of depression,the antidepressant effects of JD were assessed using the sucrose preference test(SPT),forced swimming test(FST),and tail suspension test(TST).Tandem mass tag(TMT)-based quantitative proteomic analysis of the brain was performed following JD treatment.Hierarchical clustering,Gene Ontology function annotation,Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment,and protein-protein interactions(PPIs)were used to analyze differentially expressed proteins(DEPs),which were further validated using quantitative real-time polymerase chain reaction(qR T-PCR)and Western blotting.RESULTS:Behavioral tests confirmed the antidepressant effects of JD,and bioinformatics analysis revealed 59 DEPs,including 33 up-regulated and 26 down-regulated proteins,between the CUMS and JD-M groups.KEGG and PPI analyses revealed that neurofilament proteins and the Ras signaling pathway may be key targets of JD in the treatment of depression.q RTPCR and Western blotting results demonstrated that CUMS reduced the protein expression of neurofilament light(NEFL)and medium(NEFM)and inhibited the phosphorylation of extracellular regulated kinase 1/2(ERK1/2),whereas JD promoted the phosphorylation of ERK1/2 and up-regulated the protein expression of NEFL and NEFM.CONCLUSIONS:The antidepressant mechanism of JD may be related to the up-regulation of p-ERK1/2 and neurofilament proteins.展开更多
Fracture(fault)reactivation can lead to dynamic geological hazards including earthquakes,rock collapses,landslides,and rock bursts.True triaxial compression tests were conducted to analyze the fracture reactivation pr...Fracture(fault)reactivation can lead to dynamic geological hazards including earthquakes,rock collapses,landslides,and rock bursts.True triaxial compression tests were conducted to analyze the fracture reactivation process under two different orientations of σ_(2),i.e.σ_(2) parallel to the fracture plane(Scheme 2)and σ_(2) cutting through the fracture plane(Scheme 3),under varying σ_(3) from 10 MPa to 40 MPa.The peak or fracture reactivation strength,deformation,failure mode,and post-peak mechanical behavior of intact(Scheme 1)and pre-fractured(Schemes 2 and 3)specimens were also compared.Results show that for intact specimens,the stress remains nearly constant in the residual sliding stage with no stick-slip,and the newly formed fracture surface only propagates along the σ_(2) direction when σ_(3) ranges from 10 MPa to 30 MPa,while it extends along both σ_(2) and σ_(3) directions when σ_(3) increases to 40 MPa;for the pre-fractured specimens,the fractures are usually reactivated under all the σ_(3) levels in Scheme 2,but fracture reactivation only occurs when σ_(3) is greater than 25 MPa in Scheme 3,below which new faulting traversing the original macro fracture occurs.In all the test schemes,both ε_(2) and ε_(3) experience an accumulative process of elongation,after which an abrupt change occurs at the point of the final failure;the degree of this change is dependent on the orientation of the new faulting or the slip direction of the original fracture,and it is generally more than 10 times larger in the slip direction of the original fracture than in the non-slip direction.Besides,the differential stress(peak stress)required for reactivation and the post-peak stress drop increase with increasing σ_(3).Post-peak stress drop and residual strength in Scheme 3 are generally greater than those in Scheme 2 at the same σ_(3) value.Our study clearly shows that intermediate principal stress orientation not only affects the fracture reactivation strength but also influences the slip deformation and failure modes.These new findings facilitate the mitigation of dynamic geological hazards associated with fracture and fault slip.展开更多
Electrocatalytic hydrogen peroxide(H_(2)O_(2))production via the two-electron oxygen reduction reaction(2e−ORR)is promising,but non-metal catalysts with high selectivity are lacking.Herein,a high content of pyrrolic N...Electrocatalytic hydrogen peroxide(H_(2)O_(2))production via the two-electron oxygen reduction reaction(2e−ORR)is promising,but non-metal catalysts with high selectivity are lacking.Herein,a high content of pyrrolic N doped carbon(HPNC)with small mesopores is constructed.Over 80%H_(2)O_(2) selectivity at a wide potential of 0.2–0.6 V is achieved.The finite element simulation reveals that small pore-size mesopores are beneficial to O_(2) adsorption.And in-situ characterization proves that HPNC suppresses the breakage of Osingle bondO bond and enhances the stabilization of *OOH intermediates,thus improving the 2e−ORR performance.This work highlights the combination of non-metal active sites and geometry for 2e−ORR electrocatalysis.展开更多
A series of true triaxial unloading tests are conducted on sandstone specimens with a single structural plane to investigate their mechanical behaviors and failure characteristics under different in situ stress states...A series of true triaxial unloading tests are conducted on sandstone specimens with a single structural plane to investigate their mechanical behaviors and failure characteristics under different in situ stress states.The experimental results indicate that the dip angle of structural plane(θ)and the intermediate principal stress(σ2)have an important influence on the peak strength,cracking mode,and rockburst severity.The peak strength exhibits a first increase and then decrease as a function ofσ2 for a constantθ.However,whenσ2 is constant,the maximum peak strength is obtained atθof 90°,and the minimum peak strength is obtained atθof 30°or 45°.For the case of an inclined structural plane,the crack type at the tips of structural plane transforms from a mix of wing and anti-wing cracks to wing cracks with an increase inσ2,while the crack type around the tips of structural plane is always anti-wing cracks for the vertical structural plane,accompanied by a series of tensile cracks besides.The specimens with structural plane do not undergo slabbing failure regardless ofθ,and always exhibit composite tensile-shear failure whatever theσ2 value is.With an increase inσ2 andθ,the intensity of the rockburst is consistent with the tendency of the peak strength.By analyzing the relationship between the cohesion(c),internal friction angle(φ),andθin sandstone specimens,we incorporateθinto the true triaxial unloading strength criterion,and propose a modified linear Mogi-Coulomb criterion.Moreover,the crack propagation mechanism at the tips of structural plane,and closure degree of the structural plane under true triaxial unloading conditions are also discussed and summarized.This study provides theoretical guidance for stability assessment of surrounding rocks containing geological structures in deep complex stress environments.展开更多
Intermediate filaments(IFs)in human cells are the products of six distinct gene families,all sharing homology in a core rod domain.These IFs assemble into non-polar polymers,providing cytoplasmic and nuclear mechanica...Intermediate filaments(IFs)in human cells are the products of six distinct gene families,all sharing homology in a core rod domain.These IFs assemble into non-polar polymers,providing cytoplasmic and nuclear mechanical support.Recent research has revealed the active and dynamic properties of IFs and their binding partners.This regulation extends beyond cell mechanics to include migration,mechanotransduction,and tumor growth.Therefore,this comprehensive review aims to catalog all human IF genes and IF-associated proteins(IFAPs),detailing their names,sizes,functions,associated human diseases,relevant literature,and links to resources like UniProt and the Protein Atlas database.These links provide access to additional information such as protein structure,subcellular localization,disease-causing mutations,and pathology.Using this catalog,we will provide an overview of the current understanding of the biological functions of IFs and IFAPs.This overview is crucial for identifying gaps in their characterization and understanding IF-mediated mechanotransduction.Additionally,we will consider potential future research directions.展开更多
Hydroisomerization of n-alkanes plays an important role in fuel and lubricants processing.Bifunctional catalysts with ultralow platinum loading have recently been reported successively for hydroisomerisation.Herein,th...Hydroisomerization of n-alkanes plays an important role in fuel and lubricants processing.Bifunctional catalysts with ultralow platinum loading have recently been reported successively for hydroisomerisation.Herein,the catalysts were prepared successfully with different methods to improve the catalytic performance.The conversion of 0.01%Pt1@CeOx/SAPO-11 prepared by co-calcination method(0.01%Pt1@CS-c)is 71.4%,25%higher than the other prepared by precipitation method.The turnover frequency per active surface platinum site(TOFPt)of 0.01%Ptl@CS-c is as high as 13115 h^(-1).Revealed by the X-ray photoelectron spectroscopy(XPS)results,the quality of phase boundary/intersurface between ceria and zeolite is found significantly different.The conjunction quality of phase boundary directly affects the spillover rate of intermediate species,which further leads to an apparent activity difference.In addition,the possible role of ceria in the reaction is discussed,rather than just as a carrier for the active metal atoms.展开更多
The effects of drawing strain during intermediate annealing on the microstructure and properties of Cu-20 wt%Fe alloy wires while maintaining constant total deformation were investigated.Intermediate annealing effecti...The effects of drawing strain during intermediate annealing on the microstructure and properties of Cu-20 wt%Fe alloy wires while maintaining constant total deformation were investigated.Intermediate annealing effectively removes work hardening in both the Cu matrix and Fe fibers,restoring their plastic deformation capacity and preserving fiber continuity during subsequent redrawing.The process also refines the Fe phase,leading to a more uniform size distribution and straighter,better-aligned Cu/Fe phase interfaces,thereby enhancing the comprehensive properties of the alloy.The magnitude of drawing strain during intermediate annealing plays a critical role in balancing the mechanical strength and electrical conductivity of redrawn wires.A lower initial drawing strain requires greater redrawing strain,leading to excessive hardening of the Fe fibers,which negatively impacts the electrical conductivity and tensile plasticity.Conversely,a higher initial drawing strain can result in insufficient work hardening during the redrawing deformation process,yielding minimal strength improvements.Among the tested alloys,H/3.5 wires show a slight reduction in strength and hardness compared to W and H/4.5 wires but exhibit a significant increase in tensile elongation and electrical conductivity.The tensile strength was 755 MPa,and the electrical conductivity was 47%international-annealed copper standard(IACS).The optimal performance is attributed to the formation of a high-density,ultrafine Fe fiber structure-aligned parallel to the drawing direction,which is achieved through a suitable combination of the drawing process and intermediate annealing.展开更多
The investigation of reaction kinetics is the key to understanding the nature of reaction processes.However,monitoring fast photochemical reactions by mass spectrometry remains challenging.Herein,we developed an optic...The investigation of reaction kinetics is the key to understanding the nature of reaction processes.However,monitoring fast photochemical reactions by mass spectrometry remains challenging.Herein,we developed an optical focusing inductive electrospray(OF-iESI)mass spectrometry platform for real-time and in-situ photoreaction monitoring.Coaxial irradiation from back of nanoelectrospray emitter with a taper section was utilized,so the emitter could act as optical lens to help achieving much larger optical power density at emitter tip compared to other sections,which allowed for in-situ reaction monitoring of photoreactions.Through theoretical calculations,the highest optical power density region volume was ca.45 nL.We also integrated a controller for the laser source(450 nm),enabling the modulation of pulse duration(>1 ms).This facilitates the study of photochemical reaction kinetics.The in-situ capability of this device was proved by capturing the short-lived photogenerated intermediates during the dehydrogenation of tetrahydroquinoline.This device was further used to investigate the kinetics of triplet energy transfer based Paternò-Büchi reaction.The reaction order has hitherto remained undetermined while the result of OF-iESI suggested it followed pseudo-second-order reaction kinetics.The short-lived donor-acceptor collision complex intermediate was also successfully identified by tandem mass spectrometry.展开更多
CuZn-based catalyst is an attractive catalyst for methanol synthesis from CO_(2)hydrogenation,but it early deactivates and its methanol yield still needs to improve.In this study,Y_(2)O_(3)was introduced to Cu/ZnO usi...CuZn-based catalyst is an attractive catalyst for methanol synthesis from CO_(2)hydrogenation,but it early deactivates and its methanol yield still needs to improve.In this study,Y_(2)O_(3)was introduced to Cu/ZnO using a one-pot hydrothermal method,and exhibits a synergistic effect of ZnO and Y_(2)O_(3)on enhancing methanol yield and the stability.We found that the interaction between Y_(2)O_(3)and ZnO results in abundant oxygen vacancies formation,thereby enhancing CO_(2)adsorption and activation.Kinetic analysis and in situ DRIFTS suggest that RWGS forming CO and methanol formation compete for a mutual intermediate HCOO^(*),and the introduction of Y_(2)O_(3)to Cu/ZnO raises the energy barrier for the CO formation but lowers that for methanol formation,thus enhancing the methanol yield on Cu/ZnO/Y_(2)O_(3).展开更多
The research on metal dimer clusters is of great importance,owing to the potential in modulating the adsorption behavior towards reaction intermediates.Here,we develop a loading heightening strategy to obtain a 32.5wt...The research on metal dimer clusters is of great importance,owing to the potential in modulating the adsorption behavior towards reaction intermediates.Here,we develop a loading heightening strategy to obtain a 32.5wt%Fe-dimer catalyst(Fe-32.5).The co-anchoring of two Fe atoms in a single triazine ring of carbon nitride with an atomic spacing of∼0.23nm is proved.Fe atoms occupy the pores of the triazine ring in the lower iron content sample(Fe-12.9 and Fe-17.1).However,with the increase of iron content to 32.5wt%,two Fe atoms simultaneously occupy one triazine ring.For Fe-32.5,besides the main peak located at∼1.5Åcorresponding to the Fe–N interaction,a peak attributed to Fe–Fe bonding is observed at∼2.2Åin Fourier-transformed k3-weithted extended X-ray absorption fine structure.Density functional theoretical calculations reveal that Fe-dimer in Fe-32.5 induces a charge redistribution compared with that in Fe-12.9 and Fe-17.1.H_(2)O^(∗)is adsorbed on O^(∗)via hydrogen bonding in Fe-12.9 and Fe-17.1.However,H_(2)O^(∗)and O^(∗)in Fe-32.5 are adsorbed on Fe–Fe dimer,resulting in a decrease in the total energy of the reaction process.For the two former,O_(2)^(-)∗adsorbs on individual Fe atoms.Fe-dimer in Fe-32.5 adsorbs O_(2)^(-)∗in the form of bridge bonds,which facilitates the·O_(2)^(-)release.Furthermore,an enhanced affinity for the substrate 3,3′,5,5′-tetramethylbenzidine and higher peroxidase-like activity were displayed.This work provides an effective mean to synthesize metal dimer clusters through high loading.展开更多
Iron removal from zinc leachate in hydrometallurgy produces large volumes of low-grade,impurity-laden iron waste,posing significant environmental challenges.Magnetite precipitation offers a novel method for iron remov...Iron removal from zinc leachate in hydrometallurgy produces large volumes of low-grade,impurity-laden iron waste,posing significant environmental challenges.Magnetite precipitation offers a novel method for iron removal and resource recycling in zinc hydrometallurgy.However,the chemical similarity between ferrous and zinc ions,along with high zinc concentrations,causes zinc co-precipitation,challenging its application.To address this issue,this study utilized electron microscopy to observe key intermediate products in magnetite crystallization and employed EXAFS(extended X-ray absorption fine structure)to analyze their evolutionary mechanisms and zinc-binding configurations.The results indicate that the intermediate products during magnetite formation are sequentially green rust,feroxyhyte(δ-FeOOH),and weakly crystalline nanoparticles,and further analysis revealed that their transformation follows the dissolution-recrystallization mechanism.Furthermore,it was found that intermediate products such as green rust exhibit strong binding with zinc(via adsorption and lattice substitution),which was confirmed as a significant reason for the difficulty in separating zinc from magnetite.This study elucidates the transformation process of intermediate products during magnetite formation and,for the first time,reveals the binding configurations of zinc with these key intermediate products.This has significant implications for the development and optimization of new technologies for the efficient separation of iron and zinc during the magnetite precipitation process.展开更多
BACKGROUND Diabetes and its associated microvascular complications,such as nephropathy and retinopathy,significantly impact global health.These complications often begin in the prediabetic stage,emphasizing the import...BACKGROUND Diabetes and its associated microvascular complications,such as nephropathy and retinopathy,significantly impact global health.These complications often begin in the prediabetic stage,emphasizing the importance of early detection and intervention.Inflammatory pathways are key contributors to these conditions,and recent research has identified members of the tumor necrosis factor(TNF)receptor superfamily as potential biomarkers.However,their association with renal and retinal dysfunction in individuals with intermediate hyperglycemia(IH)remains underexplored.The Early Prevention of Diabetes Complications(ePREDICE)trial provides a valuable cohort to investigate these associations and improve risk assessment strategies.AIM To identify inflammatory biomarkers associated with early renal and retinal dysfunction in individuals with IH.Specifically,we evaluate the diagnostic and prognostic potential of TNF receptor superfamily members[TNF receptor 1(TNF-R1),TNF receptor 2(TNF-R2)],T-cell immunoglobulin and mucin domain 3(TIM-3)/HAVCR2,galectin-3,and interleukin-6(IL-6)in detecting kidney dysfunction and retinopathy in this high-risk population.By understanding their roles,we seek to enhance early screening methods and inform personalized intervention strategies.METHODS A cross-sectional analysis of 967 individuals with IH from the ePREDICE trial was conducted.Participants underwent comprehensive anthropometric and biochemical assessments.Key inflammatory biomarkers,including TNF-R1,TNF-R2,TIM-3/HAVCR2,galectin-3,and IL-6,were quantified using immunoassays.Renal function was assessed using estimated glomerular filtration rate(eGFR)and albuminuria,while retinopathy was evaluated through fundoscopic examination.Statistical analyses included adjusted mean comparisons,correlation studies,and receiver operating characteristic curve analysis to assess biomarker diagnostic accuracy.RESULTS TNF-R1,TNF-R2,and TIM-3/HAVCR2 were significantly associated with reduced filtration function(eGFR<60 mL/minute/1.73 m^(2))and albuminuria,with area under the curve(AUC)values between 0.815 and 0.845.TIM-3/HAVCR2 emerged as the strongest predictor of retinopathy(AUC=0.737).Strong correlations(r>0.75)were observed among TNF-R1,TNF-R2,and TIM-3/HAVCR2,suggesting a coordinated role in inflammatory pathways.CONCLUSION Our findings highlight the potential of TNF receptor superfamily members as biomarkers for early-stage renal and retinal complications in individuals with IH.Their integration into clinical screening protocols could facilitate earlier detection,improving patient stratification and personalized management strategies.Further longitudinal studies are necessary to validate their predictive value and potential for guiding therapeutic interventions in IH and early diabetes management.展开更多
Generally,referring to the stability of perovskite,the most studied perovskite material has been MA-free mixed-cationperovskite.The precise role of MA in the light-thermal-humid stability of perovskite solar cells sti...Generally,referring to the stability of perovskite,the most studied perovskite material has been MA-free mixed-cationperovskite.The precise role of MA in the light-thermal-humid stability of perovskite solar cells still lacks ofa systematically understanding.In this work,the evolution of crystallographic structures,intermediate phase,ultrafast dynamics,and thermal decomposition behavior of MA-mixed perovskite FA_(1-x)MA_(x)PbI_(3)(x=0–100%)areinvestigated.The influence of MA on the stability of devices under heat,light,and humidity exposure arerevealed.In the investigated compositional space(x=0–100%),device efficiencies vary from 19.5%to 22.8%,andthe light,thermal,and humidity exposure stability of the related devices are obviously improved forFA1-xMAxPbI_(3)(x=20%–30%).Incorporation 20%–30%of MA cations lowers nucleation barrier and causes asignificant volume shrinkage,which enhances the interaction between FA and I,thus improving crystallizationand stability of the FA_(1-x)MA_(x)PbI_(3).Thermal behavior analysis reveals that the decomposition temperature of FA_(0.8)MA_(0.2)PbI_(3)reaches 247℃(FAPbI_(3),233℃)and trace amounts of MA cations enhance the thermal stability ofthe perovskite.Remarkably,we observe lattice shrinkage using spherical aberration corrected transmissionelectron microscope(AC-TEM).This work implies that stabilizing perovskites will be realized by incorporatingtrace amounts of MA,which improve the crystallization and carrier transport,leading to improved stability andperformances.展开更多
Conductive hydrogels have garnered widespread attention as a versatile class of flexible electronics.Despite considerable advancements,current methodologies struggle to reconcile the fundamental trade-off between high...Conductive hydrogels have garnered widespread attention as a versatile class of flexible electronics.Despite considerable advancements,current methodologies struggle to reconcile the fundamental trade-off between high conductivity and effective absorption-dominated electromagnetic interference(EMI)shielding,as dictated by classical impedance matching theory.This study addresses these limitations by introducing a novel synthesis of aramid nanofiber/MXene-reinforced polyelectrolyte hydrogels.Leveraging the unique properties of polyelectrolytes,this innovative approach enhances ionic conductivity and exploits the hydration effect of hydrophilic polar groups to induce the formation of intermediate water.This critical innovation facilitates polarization relaxation and rearrangement in response to electromagnetic fields,thereby significantly enhancing the EMI shielding effectiveness of hydrogels.The electromagnetic wave attenuation capacity of these hydrogels was thoroughly evaluated across both X-band and terahertz band frequencies,with further investigation into the impact of varying water content states-hydrated,dried,and frozen-on their electromagnetic properties.Moreover,the hydrogels exhibited promising capabilities beyond mere EMI shielding;they also served effectively as strain sensors for monitoring human motions,indicating their potential applicability in wearable electronics.This work provides a new approach to designing multifunctional hydrogels,advancing the integration of flexible,multifunctional materials in modern electronics,with potential applications in both EMI shielding and wearable technology.展开更多
文摘Taking Jakobson’s terminology and classification of translation as its starting point,this paper probes into many classic literary works’interrelationship with their imagery adaptations,discusses a reconciliation of different genres without sacrificing the loss of their respective strength.This paper also draws support from other scholars’discussion of originality and intertextuality to land on a conclusion:it is fully possible to reconcile different artistic genres,and this reconciliation will,as Benjamin put it,lead to the"afterlife"of a literary work.
文摘Translation has so far dominated the discussions of world literature.While some like David Damrosch emphasize the role of translation in the dissemination of a literary work beyond its native context,others are critical about the dominance of English as well as some other European languages in the process of literary translations.In the meantime,the cross-cultural transmission of literature takes place via different media and across media.With the rapid progress of technology and performance art,film,television,animation,and video games have empowered the transmission of literature.Regarding translation,intermedial practices,and world literature,certain questions need to be addressed:What is the relationship between translingual and crosscultural communication mediated by translation,and the intermedial dissemination of literature?Does literary translation facilitate the intermedial transmission of literature?Conversely,how does the intermedial spread of literature impact translation?While world literature remains inseparable from translation,it has now entered a new era of intermedial dissemination.Consequently,the study of world literature must transcend the translation paradigm and integrate both translation and intermedial perspectives to better conceptualize and understand the nature of world literature.Two typical examples are further discussed,namely,the global circulation of Henrik Ibsen’s works,with a focus on their reception in China,and the international dissemination of Journey to the West,particularly highlighting the role of the recent video game Black Myth:Wukong in amplifying the global reach of this literary classic.
基金the financial support from the National Key R&D Program of China(2021YFF0500500)the National Natural Science Foundation of China(62474131,62274132,and 62204189)。
文摘Ambient-air,moisture-assisted annealing is widely used in fabricating perovskite solar cells(PSCs).However,the inherent sensitivity of perovskite intermediate-phase to moisture—due to fast and spontaneous intermolecular exchange reaction—requires strict control of ambient humidity and immediate thermal annealing treatment,raising manufacturing costs and causing fast nucleation of perovskite films.We report herein a self-buffered molecular migration strategy to slow down the intermolecular exchange reaction by introducing a n-butylammonium bromide shielding layer,which limits moisture diffusion into intermediate-phase film.This further endows the notably wide nucleation time and humidity windows for perovskite crystallization in ambient air.Consequently,the optimized 1.68 e V-bandgap n-i-p structured PSC reaches a record-high reverse-scan(RS)PCE of 22.09%.Furthermore,the versatility and applicability of as-proposed self-buffered molecular migration strategy are certified by employing various shielding materials and 1.53 eV-/1.77 eV-bandgap perovskite materials.The n-i-p structured PSCs based on 1.53 eV-and 1.77 eV-bandgap perovskite films achieve outstanding RS PCEs of 25.23%and 19.09%,respectively,both of which are beyond of the state-of-the-art ambient-air processed PSCs.
文摘Literature adapts following the changes of its objects,as do all arts.However,while fictional characters and context can be said to have equivalents in people and society,the same cannot be said about the literature form itself.Especially with the advent of the internet,this transformations in literature seem more visible:it has become spread in the cloud,surpassing its boundaries and mixing with the profusion of voices of the cyberspace.Intermediality,in addition to its theories about the intermedial phenomena,has become a methodology or even a pathway to understand arts.This paper presents part of an extensive analysis of a corpus formed by contemporary Brazilian literature,in order to describe different manifestations on how the"mediatized society"appears through the literature forms,from the Media Culture to today.
基金the National Natural Science Foundation of China:Study on the Biological Basis of Jiawei Danzhi Xiaoyaosan in Treatment of Depression based on Network Pharmacology and Proteomics(No.81973739)Natural Science Excellent Youth Fund of Henan Province:the Mechanism of Baicalin Regulates the GSK3B-Mediated Axoplasmic Transport in the Treatment of Depression(No.202300410249)+1 种基金Science and Technology Research Project of Henan Province:Study on the Antidepressant Mechanism of Jiawei Danzhi Xiaoyaosan based on the NOD-like Receptor Thermal Protein Domainassociated Protein and Tripartite Motif-containing Protein 31 Ubiquitination Pathway(No.222102310233)Study on the Mechanism of Jiawei Danzhi Xiaoyaosan in the Treatment of Depression by Regulating M1/M2 Polarization and Microglia Autophagy(No.232102310419)。
文摘OBJECTIVE:To reveal the antidepressant mechanisms of Jiawei DanZhiXiaoYaoSan(加味丹栀逍遥散,JD)in chronic unpredictable mild stress(CUMS)-induced depression in mice.METHODS:Using the CUMS mouse model of depression,the antidepressant effects of JD were assessed using the sucrose preference test(SPT),forced swimming test(FST),and tail suspension test(TST).Tandem mass tag(TMT)-based quantitative proteomic analysis of the brain was performed following JD treatment.Hierarchical clustering,Gene Ontology function annotation,Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment,and protein-protein interactions(PPIs)were used to analyze differentially expressed proteins(DEPs),which were further validated using quantitative real-time polymerase chain reaction(qR T-PCR)and Western blotting.RESULTS:Behavioral tests confirmed the antidepressant effects of JD,and bioinformatics analysis revealed 59 DEPs,including 33 up-regulated and 26 down-regulated proteins,between the CUMS and JD-M groups.KEGG and PPI analyses revealed that neurofilament proteins and the Ras signaling pathway may be key targets of JD in the treatment of depression.q RTPCR and Western blotting results demonstrated that CUMS reduced the protein expression of neurofilament light(NEFL)and medium(NEFM)and inhibited the phosphorylation of extracellular regulated kinase 1/2(ERK1/2),whereas JD promoted the phosphorylation of ERK1/2 and up-regulated the protein expression of NEFL and NEFM.CONCLUSIONS:The antidepressant mechanism of JD may be related to the up-regulation of p-ERK1/2 and neurofilament proteins.
基金funding support from the National Nature Science Foundation of China(Grant No.42272334)the National Key Research and Development Program of China(Grant No.2022YFE0137200)the Taishan Scholars Program(Grant No.2019RKB01083).
文摘Fracture(fault)reactivation can lead to dynamic geological hazards including earthquakes,rock collapses,landslides,and rock bursts.True triaxial compression tests were conducted to analyze the fracture reactivation process under two different orientations of σ_(2),i.e.σ_(2) parallel to the fracture plane(Scheme 2)and σ_(2) cutting through the fracture plane(Scheme 3),under varying σ_(3) from 10 MPa to 40 MPa.The peak or fracture reactivation strength,deformation,failure mode,and post-peak mechanical behavior of intact(Scheme 1)and pre-fractured(Schemes 2 and 3)specimens were also compared.Results show that for intact specimens,the stress remains nearly constant in the residual sliding stage with no stick-slip,and the newly formed fracture surface only propagates along the σ_(2) direction when σ_(3) ranges from 10 MPa to 30 MPa,while it extends along both σ_(2) and σ_(3) directions when σ_(3) increases to 40 MPa;for the pre-fractured specimens,the fractures are usually reactivated under all the σ_(3) levels in Scheme 2,but fracture reactivation only occurs when σ_(3) is greater than 25 MPa in Scheme 3,below which new faulting traversing the original macro fracture occurs.In all the test schemes,both ε_(2) and ε_(3) experience an accumulative process of elongation,after which an abrupt change occurs at the point of the final failure;the degree of this change is dependent on the orientation of the new faulting or the slip direction of the original fracture,and it is generally more than 10 times larger in the slip direction of the original fracture than in the non-slip direction.Besides,the differential stress(peak stress)required for reactivation and the post-peak stress drop increase with increasing σ_(3).Post-peak stress drop and residual strength in Scheme 3 are generally greater than those in Scheme 2 at the same σ_(3) value.Our study clearly shows that intermediate principal stress orientation not only affects the fracture reactivation strength but also influences the slip deformation and failure modes.These new findings facilitate the mitigation of dynamic geological hazards associated with fracture and fault slip.
文摘Electrocatalytic hydrogen peroxide(H_(2)O_(2))production via the two-electron oxygen reduction reaction(2e−ORR)is promising,but non-metal catalysts with high selectivity are lacking.Herein,a high content of pyrrolic N doped carbon(HPNC)with small mesopores is constructed.Over 80%H_(2)O_(2) selectivity at a wide potential of 0.2–0.6 V is achieved.The finite element simulation reveals that small pore-size mesopores are beneficial to O_(2) adsorption.And in-situ characterization proves that HPNC suppresses the breakage of Osingle bondO bond and enhances the stabilization of *OOH intermediates,thus improving the 2e−ORR performance.This work highlights the combination of non-metal active sites and geometry for 2e−ORR electrocatalysis.
基金supports from the National Natural Science Foundation of China (Grant Nos.52004143 and 52374095)the open fund for the Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines (Grant No.SKLMRDPC21KF06).
文摘A series of true triaxial unloading tests are conducted on sandstone specimens with a single structural plane to investigate their mechanical behaviors and failure characteristics under different in situ stress states.The experimental results indicate that the dip angle of structural plane(θ)and the intermediate principal stress(σ2)have an important influence on the peak strength,cracking mode,and rockburst severity.The peak strength exhibits a first increase and then decrease as a function ofσ2 for a constantθ.However,whenσ2 is constant,the maximum peak strength is obtained atθof 90°,and the minimum peak strength is obtained atθof 30°or 45°.For the case of an inclined structural plane,the crack type at the tips of structural plane transforms from a mix of wing and anti-wing cracks to wing cracks with an increase inσ2,while the crack type around the tips of structural plane is always anti-wing cracks for the vertical structural plane,accompanied by a series of tensile cracks besides.The specimens with structural plane do not undergo slabbing failure regardless ofθ,and always exhibit composite tensile-shear failure whatever theσ2 value is.With an increase inσ2 andθ,the intensity of the rockburst is consistent with the tendency of the peak strength.By analyzing the relationship between the cohesion(c),internal friction angle(φ),andθin sandstone specimens,we incorporateθinto the true triaxial unloading strength criterion,and propose a modified linear Mogi-Coulomb criterion.Moreover,the crack propagation mechanism at the tips of structural plane,and closure degree of the structural plane under true triaxial unloading conditions are also discussed and summarized.This study provides theoretical guidance for stability assessment of surrounding rocks containing geological structures in deep complex stress environments.
基金the National Natural Science Foundation of China(Grant No.32070777 to F.N.).
文摘Intermediate filaments(IFs)in human cells are the products of six distinct gene families,all sharing homology in a core rod domain.These IFs assemble into non-polar polymers,providing cytoplasmic and nuclear mechanical support.Recent research has revealed the active and dynamic properties of IFs and their binding partners.This regulation extends beyond cell mechanics to include migration,mechanotransduction,and tumor growth.Therefore,this comprehensive review aims to catalog all human IF genes and IF-associated proteins(IFAPs),detailing their names,sizes,functions,associated human diseases,relevant literature,and links to resources like UniProt and the Protein Atlas database.These links provide access to additional information such as protein structure,subcellular localization,disease-causing mutations,and pathology.Using this catalog,we will provide an overview of the current understanding of the biological functions of IFs and IFAPs.This overview is crucial for identifying gaps in their characterization and understanding IF-mediated mechanotransduction.Additionally,we will consider potential future research directions.
基金Project supported by National Natural Science Foundation of China(22078159,U19B2001)。
文摘Hydroisomerization of n-alkanes plays an important role in fuel and lubricants processing.Bifunctional catalysts with ultralow platinum loading have recently been reported successively for hydroisomerisation.Herein,the catalysts were prepared successfully with different methods to improve the catalytic performance.The conversion of 0.01%Pt1@CeOx/SAPO-11 prepared by co-calcination method(0.01%Pt1@CS-c)is 71.4%,25%higher than the other prepared by precipitation method.The turnover frequency per active surface platinum site(TOFPt)of 0.01%Ptl@CS-c is as high as 13115 h^(-1).Revealed by the X-ray photoelectron spectroscopy(XPS)results,the quality of phase boundary/intersurface between ceria and zeolite is found significantly different.The conjunction quality of phase boundary directly affects the spillover rate of intermediate species,which further leads to an apparent activity difference.In addition,the possible role of ceria in the reaction is discussed,rather than just as a carrier for the active metal atoms.
基金support provided by the National Natural Science Foundation of China(Nos.52405364,and 52171110)the Jiangsu Funding Program for Excellent Postdoctoral Talent.W.Huo acknowledges the support from the European Union Horizon 2020 Research and Innovation Program(No.857470)+1 种基金from the European Regional Development Fund via the Foundation for Polish Science International Research Agenda PLUS Program(No.MAB PLUS/2018/8)The publication was partly created within the framework of the project of the Minister of Science and Higher Education"Support for the activities of Centers of Excellence established in Poland under Horizon 2020"(No.MEiN/2023/DIR/3795).
文摘The effects of drawing strain during intermediate annealing on the microstructure and properties of Cu-20 wt%Fe alloy wires while maintaining constant total deformation were investigated.Intermediate annealing effectively removes work hardening in both the Cu matrix and Fe fibers,restoring their plastic deformation capacity and preserving fiber continuity during subsequent redrawing.The process also refines the Fe phase,leading to a more uniform size distribution and straighter,better-aligned Cu/Fe phase interfaces,thereby enhancing the comprehensive properties of the alloy.The magnitude of drawing strain during intermediate annealing plays a critical role in balancing the mechanical strength and electrical conductivity of redrawn wires.A lower initial drawing strain requires greater redrawing strain,leading to excessive hardening of the Fe fibers,which negatively impacts the electrical conductivity and tensile plasticity.Conversely,a higher initial drawing strain can result in insufficient work hardening during the redrawing deformation process,yielding minimal strength improvements.Among the tested alloys,H/3.5 wires show a slight reduction in strength and hardness compared to W and H/4.5 wires but exhibit a significant increase in tensile elongation and electrical conductivity.The tensile strength was 755 MPa,and the electrical conductivity was 47%international-annealed copper standard(IACS).The optimal performance is attributed to the formation of a high-density,ultrafine Fe fiber structure-aligned parallel to the drawing direction,which is achieved through a suitable combination of the drawing process and intermediate annealing.
基金financially supported by the National Natural Science Foundation of China(Nos.22104112 and 22374110)the Fundamental Research Funds for the Central Universities。
文摘The investigation of reaction kinetics is the key to understanding the nature of reaction processes.However,monitoring fast photochemical reactions by mass spectrometry remains challenging.Herein,we developed an optical focusing inductive electrospray(OF-iESI)mass spectrometry platform for real-time and in-situ photoreaction monitoring.Coaxial irradiation from back of nanoelectrospray emitter with a taper section was utilized,so the emitter could act as optical lens to help achieving much larger optical power density at emitter tip compared to other sections,which allowed for in-situ reaction monitoring of photoreactions.Through theoretical calculations,the highest optical power density region volume was ca.45 nL.We also integrated a controller for the laser source(450 nm),enabling the modulation of pulse duration(>1 ms).This facilitates the study of photochemical reaction kinetics.The in-situ capability of this device was proved by capturing the short-lived photogenerated intermediates during the dehydrogenation of tetrahydroquinoline.This device was further used to investigate the kinetics of triplet energy transfer based Paternò-Büchi reaction.The reaction order has hitherto remained undetermined while the result of OF-iESI suggested it followed pseudo-second-order reaction kinetics.The short-lived donor-acceptor collision complex intermediate was also successfully identified by tandem mass spectrometry.
文摘CuZn-based catalyst is an attractive catalyst for methanol synthesis from CO_(2)hydrogenation,but it early deactivates and its methanol yield still needs to improve.In this study,Y_(2)O_(3)was introduced to Cu/ZnO using a one-pot hydrothermal method,and exhibits a synergistic effect of ZnO and Y_(2)O_(3)on enhancing methanol yield and the stability.We found that the interaction between Y_(2)O_(3)and ZnO results in abundant oxygen vacancies formation,thereby enhancing CO_(2)adsorption and activation.Kinetic analysis and in situ DRIFTS suggest that RWGS forming CO and methanol formation compete for a mutual intermediate HCOO^(*),and the introduction of Y_(2)O_(3)to Cu/ZnO raises the energy barrier for the CO formation but lowers that for methanol formation,thus enhancing the methanol yield on Cu/ZnO/Y_(2)O_(3).
基金financially supported by National Natural Science Foundation of China(No.52301011)Hainan Provincial Natural Science Foundation of China(No.524QN226)the Opening Project of Key Laboratory of Optoelectronic Chemical Materials and Devices,Ministry of Education,Jianghan University(No.JDGD-202315).
文摘The research on metal dimer clusters is of great importance,owing to the potential in modulating the adsorption behavior towards reaction intermediates.Here,we develop a loading heightening strategy to obtain a 32.5wt%Fe-dimer catalyst(Fe-32.5).The co-anchoring of two Fe atoms in a single triazine ring of carbon nitride with an atomic spacing of∼0.23nm is proved.Fe atoms occupy the pores of the triazine ring in the lower iron content sample(Fe-12.9 and Fe-17.1).However,with the increase of iron content to 32.5wt%,two Fe atoms simultaneously occupy one triazine ring.For Fe-32.5,besides the main peak located at∼1.5Åcorresponding to the Fe–N interaction,a peak attributed to Fe–Fe bonding is observed at∼2.2Åin Fourier-transformed k3-weithted extended X-ray absorption fine structure.Density functional theoretical calculations reveal that Fe-dimer in Fe-32.5 induces a charge redistribution compared with that in Fe-12.9 and Fe-17.1.H_(2)O^(∗)is adsorbed on O^(∗)via hydrogen bonding in Fe-12.9 and Fe-17.1.However,H_(2)O^(∗)and O^(∗)in Fe-32.5 are adsorbed on Fe–Fe dimer,resulting in a decrease in the total energy of the reaction process.For the two former,O_(2)^(-)∗adsorbs on individual Fe atoms.Fe-dimer in Fe-32.5 adsorbs O_(2)^(-)∗in the form of bridge bonds,which facilitates the·O_(2)^(-)release.Furthermore,an enhanced affinity for the substrate 3,3′,5,5′-tetramethylbenzidine and higher peroxidase-like activity were displayed.This work provides an effective mean to synthesize metal dimer clusters through high loading.
基金Project(2022YFC3900200)supported by the Foundation for the National Key R&D Program of ChinaProjects(52404375,22276218)supported by the National Natural Science Foundation of ChinaProject(52121004)supported by the Innovative Research Groups of the National Natural Science Foundation of China。
文摘Iron removal from zinc leachate in hydrometallurgy produces large volumes of low-grade,impurity-laden iron waste,posing significant environmental challenges.Magnetite precipitation offers a novel method for iron removal and resource recycling in zinc hydrometallurgy.However,the chemical similarity between ferrous and zinc ions,along with high zinc concentrations,causes zinc co-precipitation,challenging its application.To address this issue,this study utilized electron microscopy to observe key intermediate products in magnetite crystallization and employed EXAFS(extended X-ray absorption fine structure)to analyze their evolutionary mechanisms and zinc-binding configurations.The results indicate that the intermediate products during magnetite formation are sequentially green rust,feroxyhyte(δ-FeOOH),and weakly crystalline nanoparticles,and further analysis revealed that their transformation follows the dissolution-recrystallization mechanism.Furthermore,it was found that intermediate products such as green rust exhibit strong binding with zinc(via adsorption and lattice substitution),which was confirmed as a significant reason for the difficulty in separating zinc from magnetite.This study elucidates the transformation process of intermediate products during magnetite formation and,for the first time,reveals the binding configurations of zinc with these key intermediate products.This has significant implications for the development and optimization of new technologies for the efficient separation of iron and zinc during the magnetite precipitation process.
基金Supported by the Instituto de Salud Carlos Ⅲ(ISCⅢ)Through the Project Co-Funded by the European Union,No.PI20-00487,No.PI23-00119 and No.PI24-01630.
文摘BACKGROUND Diabetes and its associated microvascular complications,such as nephropathy and retinopathy,significantly impact global health.These complications often begin in the prediabetic stage,emphasizing the importance of early detection and intervention.Inflammatory pathways are key contributors to these conditions,and recent research has identified members of the tumor necrosis factor(TNF)receptor superfamily as potential biomarkers.However,their association with renal and retinal dysfunction in individuals with intermediate hyperglycemia(IH)remains underexplored.The Early Prevention of Diabetes Complications(ePREDICE)trial provides a valuable cohort to investigate these associations and improve risk assessment strategies.AIM To identify inflammatory biomarkers associated with early renal and retinal dysfunction in individuals with IH.Specifically,we evaluate the diagnostic and prognostic potential of TNF receptor superfamily members[TNF receptor 1(TNF-R1),TNF receptor 2(TNF-R2)],T-cell immunoglobulin and mucin domain 3(TIM-3)/HAVCR2,galectin-3,and interleukin-6(IL-6)in detecting kidney dysfunction and retinopathy in this high-risk population.By understanding their roles,we seek to enhance early screening methods and inform personalized intervention strategies.METHODS A cross-sectional analysis of 967 individuals with IH from the ePREDICE trial was conducted.Participants underwent comprehensive anthropometric and biochemical assessments.Key inflammatory biomarkers,including TNF-R1,TNF-R2,TIM-3/HAVCR2,galectin-3,and IL-6,were quantified using immunoassays.Renal function was assessed using estimated glomerular filtration rate(eGFR)and albuminuria,while retinopathy was evaluated through fundoscopic examination.Statistical analyses included adjusted mean comparisons,correlation studies,and receiver operating characteristic curve analysis to assess biomarker diagnostic accuracy.RESULTS TNF-R1,TNF-R2,and TIM-3/HAVCR2 were significantly associated with reduced filtration function(eGFR<60 mL/minute/1.73 m^(2))and albuminuria,with area under the curve(AUC)values between 0.815 and 0.845.TIM-3/HAVCR2 emerged as the strongest predictor of retinopathy(AUC=0.737).Strong correlations(r>0.75)were observed among TNF-R1,TNF-R2,and TIM-3/HAVCR2,suggesting a coordinated role in inflammatory pathways.CONCLUSION Our findings highlight the potential of TNF receptor superfamily members as biomarkers for early-stage renal and retinal complications in individuals with IH.Their integration into clinical screening protocols could facilitate earlier detection,improving patient stratification and personalized management strategies.Further longitudinal studies are necessary to validate their predictive value and potential for guiding therapeutic interventions in IH and early diabetes management.
基金supported by the Nation Key R&D Program of China(Grant Numbers:2023YFC3906103)the Natural Science Foundation of Hunan Province(No.2022JJ30757)+1 种基金Entrepreneurship Research Team Project(No.1053320220430)Guangdong Science and Technology Planning Project(2018B030323010).
文摘Generally,referring to the stability of perovskite,the most studied perovskite material has been MA-free mixed-cationperovskite.The precise role of MA in the light-thermal-humid stability of perovskite solar cells still lacks ofa systematically understanding.In this work,the evolution of crystallographic structures,intermediate phase,ultrafast dynamics,and thermal decomposition behavior of MA-mixed perovskite FA_(1-x)MA_(x)PbI_(3)(x=0–100%)areinvestigated.The influence of MA on the stability of devices under heat,light,and humidity exposure arerevealed.In the investigated compositional space(x=0–100%),device efficiencies vary from 19.5%to 22.8%,andthe light,thermal,and humidity exposure stability of the related devices are obviously improved forFA1-xMAxPbI_(3)(x=20%–30%).Incorporation 20%–30%of MA cations lowers nucleation barrier and causes asignificant volume shrinkage,which enhances the interaction between FA and I,thus improving crystallizationand stability of the FA_(1-x)MA_(x)PbI_(3).Thermal behavior analysis reveals that the decomposition temperature of FA_(0.8)MA_(0.2)PbI_(3)reaches 247℃(FAPbI_(3),233℃)and trace amounts of MA cations enhance the thermal stability ofthe perovskite.Remarkably,we observe lattice shrinkage using spherical aberration corrected transmissionelectron microscope(AC-TEM).This work implies that stabilizing perovskites will be realized by incorporatingtrace amounts of MA,which improve the crystallization and carrier transport,leading to improved stability andperformances.
基金supported by the National Natural Science Foundation of China(52375204)Shaanxi Provincial Science and Technology Innovation Team(2024RS-CXTD-63)+4 种基金Xianyang 2023 Key Research and Development Plan(L2023-ZDYF-QYCX-009)the Fundamental Research Funds for the Central Universities(D5000230356)2024“Double First-Class University”Construction Special Fund Project(0604024GH0201332,0604024SH0201332)Zhiyuan Laboratory(NO.ZYL2024007)Horizon Europe Framework Programme(101086071-CUPOLA).
文摘Conductive hydrogels have garnered widespread attention as a versatile class of flexible electronics.Despite considerable advancements,current methodologies struggle to reconcile the fundamental trade-off between high conductivity and effective absorption-dominated electromagnetic interference(EMI)shielding,as dictated by classical impedance matching theory.This study addresses these limitations by introducing a novel synthesis of aramid nanofiber/MXene-reinforced polyelectrolyte hydrogels.Leveraging the unique properties of polyelectrolytes,this innovative approach enhances ionic conductivity and exploits the hydration effect of hydrophilic polar groups to induce the formation of intermediate water.This critical innovation facilitates polarization relaxation and rearrangement in response to electromagnetic fields,thereby significantly enhancing the EMI shielding effectiveness of hydrogels.The electromagnetic wave attenuation capacity of these hydrogels was thoroughly evaluated across both X-band and terahertz band frequencies,with further investigation into the impact of varying water content states-hydrated,dried,and frozen-on their electromagnetic properties.Moreover,the hydrogels exhibited promising capabilities beyond mere EMI shielding;they also served effectively as strain sensors for monitoring human motions,indicating their potential applicability in wearable electronics.This work provides a new approach to designing multifunctional hydrogels,advancing the integration of flexible,multifunctional materials in modern electronics,with potential applications in both EMI shielding and wearable technology.
