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Excited-state intramolecular proton transfer(ESIPT)-triggered photochromic materials 认领 引用
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作者 Hao Sun Chenzi Li +6 位作者 Wanting Yu Yang Chen Zhe Sun Zhuofei Li Wei Huang Dayu Wu Liangliang Zhu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第6期27-38,共12页
Photochromic materials have drawn considerable interest in chemical and material sciences,owing to their unique photo-responsive properties and transformative potential in smart material applications.Among these,ESIPT... Photochromic materials have drawn considerable interest in chemical and material sciences,owing to their unique photo-responsive properties and transformative potential in smart material applications.Among these,ESIPT-triggered photochromic systems stand out as a particularly promising subclass because of their exceptional photochromic property.However,existing reviews have primarily concentrated on Schiff base derivatives within this category,largely overlooking critical advancements in three key dimensions:(1)The discovery of novel ESIPT-triggered structural frameworks beyond traditional systems,(2)innovative synthetic methodologies enabling precise control of photochromic behaviors in both solid and solution states,and(3)the emergence of unprecedented functional properties driving cutting-edge applications.These oversights have created a significant knowledge gap in comprehensively understanding the rapid evolution of ESIPT-triggered photochromic materials.Therefore,this review systematically summarizes recent breakthroughs through three analytical lenses:First,we establish a structural taxonomy of ESIPT photochromophores,elucidating design principles that govern their performance.Second,we summarize advanced construction strategies that can synthesize tailored ESIPT photochromophores in different phase states.Third,we summarize the expanding application landscape of ESIPT photochromic materials in various functional domains.By integrating fundamental understanding with application-oriented perspectives,this work is expected to inspire the development of smart materials and photoresponsive systems. 展开更多
关键词 Excited-state intramolecular proton transfer (ESIPT) Photochromism Smart materials Schiff base Anti-counterfeiting Sensor
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The Valorization of Poplar Leaves Waste for the Extraction of Cellulose Nanocrystals 认领 引用
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作者 Dongwei Shao Hao Sun +6 位作者 Qi Wang PingHan Yiwei Liu Jiyi Luan Lin Jia QiangHe Bo Cui 《Journal of Polymer Materials》 SCIE CAS 2026年第1期127-145,共19页
The valorization of agricultural waste into high-value nanomaterials is crucial for advancing sustainable biorefineries.This study presents an efficient approach for extracting carboxylated cellulose nanocrystals(CNCs... The valorization of agricultural waste into high-value nanomaterials is crucial for advancing sustainable biorefineries.This study presents an efficient approach for extracting carboxylated cellulose nanocrystals(CNCs)from poplar leaf waste(PL),an abundant and underutilized biomass.The process involved alkaline treatment and hydrogen peroxide bleaching to purify cellulose(PL-CEL),followed by sequential periodate-chlorite oxidation to produce dicarboxylic cellulose nanocrystals(PL-CNCs).The resulting nanocrystals were comprehensively characterized using compositional analysis,XRD,FTIR,TEM,TGA,and zeta potential measurements.XRD analysis confirmed a high crystallinity index of 82%for PL-CEL,which decreased to 72.2%after oxidation due to the introduction of carboxyl groups.FTIR spectra revealed a prominent peak at 1720 cm-1,confirming successful carboxylation.TEM images showed rod-like nanocrystalswith an average length of 271.22 nmand width of 14.68 nm,while conductometric titration indicated a carboxyl content of 1.9 mmol/g.The PL-CNCs exhibited good colloidal stability with a zeta potential of-30.2mV at pH7.0.TGA demonstratedmoderate thermal stability with enhanced char formation.This work highlights a green and scalable route for converting poplar leaf waste into functional nanocellulose,suitable for applications in composites,adsorption,and sustainable materials.The novelty of this study lies in the pioneering use of poplar leaf waste combined with a sequential periodate-chlorite oxidation to sustainably produce carboxylated CNCs with enhanced functionality. 展开更多
关键词 Poplar leaves sequential oxidation cellulose nanocrystals carboxylation waste valorization
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Pressure-Enhanced Intrinsic Anomalous Hall Conductivity in the Kagome Ferrimagnet TbMn6Sn6 认领 引用
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作者 Hao Sun Jiabin Qiao +13 位作者 Weian Guo Pengyu Zheng Yuwei Liu Pengda Ye Yuemei Li Shucui Sun Deng Hu Yongkai Li Yanpeng Qi Zhiwei Wang Meiling Jin Jie Chen Zhiping Yin Xiang Li 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第3期102-117,共16页
The kagome ferrimagnet TbMn6Sn6,featuring a pristine Mn kagome lattice,has emerged as a candidate Chern magnet with a large intrinsic anomalous Hall effect(AHE).While chemical substitution can modulate its prope... The kagome ferrimagnet TbMn6Sn6,featuring a pristine Mn kagome lattice,has emerged as a candidate Chern magnet with a large intrinsic anomalous Hall effect(AHE).While chemical substitution can modulate its properties,hydrostatic pressure provides a disorder-free route to manipulate electronic and magnetic interactions.Herein,we investigate the effects of hydrostatic pressure on electrical and magneto-transport in TbMn6Sn6 up to 18.3 GPa.Pressure significantly enhances hysteresis in the magnetoresistance and Hall responses,causing a concurrent monotonic coercive field increase,suggesting the enhancement of interlayer magnetic couplings in a robust c-axis ferrimagnetic order.The intrinsic anomalous Hall conductivity increases considerably from 129.5 S·cm−1 at ambient pressure conditions to 448.7 S·cm−1 at 14.0 GPa—an enhancement of 247%that is unprecedented among pressure-tuned kagome magnets.Based on density functional theory calculations,we reveal that pressure induces multiple gap openings near the Fermi level,giving rise to pronounced Berry curvature hotspots that may contribute to the AHE.Our results show that pressure can be used to enhance the intrinsic topological responses of this kagome magnet. 展开更多
关键词 chern magnet mn kagome latticehas anomalous hall effect ahe enhances hysteresis magnetoresistance kagome ferrimagnet chemical substitution hydrostatic pressure manipulate electronic magnetic interactionshereinwe
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Detrital Zircon U-Pb-Hf Isotopes of the Changzhougou Formation in the Central–Southern Taihang Mountains and Their Tectonic Implications 认领 引用
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作者 Qianyu Li Wen Zhang +7 位作者 Wanpeng Zhou Pinghua Liu Lilin Du Chonghui Yang Jianlong Wang Hao Sun Biao Fu Guochun Zhao 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2026年第3期556-575,共20页
The Changchengian System represents one of the earliest sedimentary covers deposited on the Archean-Paleoproterozoic basement of the North China Craton.We report zircon U-Pb-Hf isotope data for Changzhougou Formation ... The Changchengian System represents one of the earliest sedimentary covers deposited on the Archean-Paleoproterozoic basement of the North China Craton.We report zircon U-Pb-Hf isotope data for Changzhougou Formation sandstones in the Chaiguan area,central-southern Taihang Mountains.The youngest detrital zircon ages(~1782 Ma)constrain the maximum depositional age to~1.78 Ga.Combined with regional constraints,deposition is bracketed between~1.76 and~1.64 Ga.Detrital zircon age spectra exhibit a dominant peak at~2.5 Ga,with secondary peaks at 2.8-2.6,2.2-2.0 and 1.9-1.8 Ga,alongside rare~3.25 and~3.70 Ga grains.Coupled with Hf isotopic signatures,these diverse populations suggest derivation primarily from the basement of the Trans-North China Orogen.Although the age spectra are broadly similar to the Archean-dominated Yanliao Rift,the presence of subordinate Paleoproterozoic and minor Paleoarchean grains,coupled with a predominant southeast-to-northwest paleocurrent,implies a closer affinity with the Xiong'er Group.These results suggest deposition in an extensional setting—likely associated with the breakup of the Columbia supercontinent—and record a northward marine transgression from the Xiong'er Rift Basin.Consequently,the central-southern Taihang Mountains served as a critical transition zone connecting the Xiong'er Basin with the Yanliao Basin. 展开更多
关键词 Changchengian System Changzhougou Formation detrital zircon North China Craton Taihang Zanhuang
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Boosting C=O Bond Scissoring Over a Pyridinic Nitrogen-Modified Cu–MoC Interface for High-Efficiency CO2 Hydrogenation to CO 认领 引用
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作者 Haiquan Liao Caikang Wang +11 位作者 Xueyuan Pan Hao Sun Yanlin Liao Mingzhe Ma Guowu Zhan Mengmeng Fan Linfei Ding Jingcheng Xu Yali Wang Kang Sun Xiangzhou Yuan Jianchun Jiang 《Carbon Energy》 SCIE EI CAS CSCD 2026年第3期213-224,共12页
Reverse water-gas shift(RWGS) reaction-aided sustainable CO2 conversion has emerged as one promising and effective approach for simultaneously mitigating climate change and solidifying energy security.Molybdenum ca... Reverse water-gas shift(RWGS) reaction-aided sustainable CO2 conversion has emerged as one promising and effective approach for simultaneously mitigating climate change and solidifying energy security.Molybdenum carbide-based catalysts demonstrate excellent selectivity for sustainably transforming CO2 into CO product,but harsh carburization syntheses and insufficient catalytic activity and stability significantly hinder their related commercial applications.Herein,a facile "insideout" synthesis strategy was proposed to fabricate dispersed Cu clusters on sub-2 nm α-MoC nanoislands confined in pyridinic nitrogen-doped carbon(Cu-MoC/NC).This catalyst achieves the highest CO2 conversion rate of 2583.4 mmol_(CO2) gcat-1 h-1compared to those of all reported Mo-based catalysts,and maintains excellent catalytic stability for 500 h under a low H2 partial pressure.Combined with X-ray absorption spectroscopy(XAS) and density functional theory(DFT) calculations,the electronegativity of pyridinic nitrogen intensifies the electron deficiency of α-MoC and strengthens the chemisorption of Cu clusters on α-MoC nanoislands surface,facilitating the electronic interaction and stability of Cu-MoC interface.This pyridinic nitrogenmodified Cu-MoC interface promotes the CO2 bridged adsorption at the interface and thus boosts C=O bond scissoring,inducing the transition of rate-limiting step and energy barrier reduction of the key intermediates.This interfacial engineering provides a sustainable and efficient strategy for improving both catalytic activity and stability of RWGS reaction to transform CO2 into value-added fuels and chemicals. 展开更多
关键词 circular carbon economy Cu clusters interfacial electron transfer nitrogen doped α-MoC nanoislands
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Inhalable stem cell-derived artificial nanovesicles for targeted siRNA delivery to effectively alleviate asthma symptoms 认领 引用
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作者 Shihan Chen Ruyi Lin +8 位作者 Yuhuan Kong Hao Sun Jiawen Wang Jinsong Zhang Yanshuang Huang Honghui Wu Donghang Xu Jianqing Gao Tianyuan Zhang 《Asian Journal of Pharmaceutical Sciences》 SCIE CAS CSCD 2026年第1期150-167,共18页
Asthma, one of the most prevalent chronic inflammatory diseases, remains challenging to manage effectively. Current therapies commonly alleviate symptoms through broad immunosuppression and bronchodilation but fail to... Asthma, one of the most prevalent chronic inflammatory diseases, remains challenging to manage effectively. Current therapies commonly alleviate symptoms through broad immunosuppression and bronchodilation but fail to target disease-specific molecular pathways. Genetic intervention using small interfering RNA(siRNA) has emerged as a promising strategy for asthma therapy. However, its success is largely hindered by the lack of an efficient delivery approach targeting airway epithelial cells(AECs). Here, we developed a novel inhalable siRNA delivery system based on artificially prepared nanovesicles through designed extrusion processes of mesenchymal stem cells. To enable an effective inhalation delivery of siRNA via nanovesicles, various parameters, including extrusion cycles,membrane pore sizes, and centrifugal forces were examined through orthogonal testing.Results revealed that the artificially prepared nanovesicles demonstrated remarkable capability to deliver thymic stromal lymphopoietin-targeted siRNA into AECs and substantially suppressed the inflammatory pathways and goblet cell hyperplasia, and eventually achieved a significant inhibition of asthma symptoms in ovalbumin-induced asthma models. Thus, the present study provides a novel nebulized nanovesicle-based carrier for effective delivery of siRNA through local inhalation, offering a promising therapeutic delivery platform for asthma and potentially other respiratory diseases. 展开更多
关键词 Nanovesicles Mesenchymal stem cells Inhalation siRNA delivery Asthma
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Experimental and simulated studies on thin-film thermoelectric generator insensitive to tensile strain 认领 引用
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作者 Yanlong Li Hao Sun +2 位作者 Zhao Zhao Yingli Shi Guozhen Shen 《Journal of Semiconductors》 EI CAS CSCD 2026年第5期129-137,共9页
Thermoelectric power generation has attracted significant interest for its capability to directly convert thermal energy into electricity.Among various configurations,thin-film thermoelectric generators(TEGs)stand out... Thermoelectric power generation has attracted significant interest for its capability to directly convert thermal energy into electricity.Among various configurations,thin-film thermoelectric generators(TEGs)stand out due to their lightweight nature and facile integration,offering promising applications in waste heat recovery and wearable electronics.However,the performance of such devices under complex mechanical conditions,particularly under biaxial tensile strain,remains underexplored.In this work,we designed and fabricated a thin-film TEG insensitive to tensile strain and performed a parametric analysis using validated 3D numerical simulations to evaluate the effects of environmental conditions,material properties,and geometric parameters.Notably,the designed device maintained stable electrical performance under various biaxial tensile strains.Owing to its miniature and thin profile,variations in any component of the generator significantly affected its electrical performance.The results indicated that reduced thermal conductivity of the substrate and Ecoflex layer,as well as a thinner substrate,enhance the output voltage.Furthermore,longer thermoelectric legs within a certain range contributed to higher output voltage.Higher output voltage was more readily achieved when the inner radius length was close to the radius of the heat source.This work provides valuable insights for the development of high-performance compliant TEGs applicable in dynamic mechanical environments,such as complex stretching in the back and shoulder-elbow regions induced by human motion. 展开更多
关键词 thin-film thermoelectric generator tensile strain output performance insensitivity
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Harmonizing Competing Intermediates:A Unified Free Energy Landscape of Protein RNase H 认领 引用
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作者 Ping Yu Zhenyong Xue +5 位作者 Hao Sun Zhiqi Hou Zhuwei Zhang Yang Wang Shimin Le Hu Chen 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第2期328-348,共21页
While single-domain proteins often exhibit two-state behavior,some proteins demonstrate complex folding pathways with intermediate states.Here,we investigate force-induced conformational transitions of RNase H using m... While single-domain proteins often exhibit two-state behavior,some proteins demonstrate complex folding pathways with intermediate states.Here,we investigate force-induced conformational transitions of RNase H using magnetic tweezers and reveal structurally distinct intermediate states in the folding and unfolding processes.Inspired by molecular dynamics simulations and verified by experiments on truncations,we found that the unfolding intermediate observed at forces above 8 pN represents a partially unfolded state with the C-terminal helix detached,while the folding intermediate observed below 6 pN corresponds to a partially folded state with only the core region formed,which is not the randomly collapsed molten globule state.Despite these structural differences,our comprehensive kinetic analysis demonstrates that both intermediates can be integrated into a unified quantitative free energy landscape along a single transition pathway.This reconciliation of competing folding intermediates provides fundamental insights into the complex dynamic behaviors of proteins in which different intermediate states are observed. 展开更多
关键词 molecular dynamics simulations structurally distinct intermediate states force induced conformational transitions magnetic tweezers rnase h free energy landscape partially unfolded protein folding intermediates
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Geological structure controls CO2 hydrate sequestration in seafloor sediments:A numerical simulation study of anticline,syncline,and inclined reservoirs 认领 引用
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作者 Shu-xia Li Zhong-xue Song +6 位作者 Yang Guo Gao-wei Hu Lu Liu Hao Sun Ben-kui Lou Jun-hao Liu Zhen-hao Ren 《China Geology》 CAS CSCD 2026年第3期635-651,共17页
Sequestration of CO2 as hydrates in seafloor sediments is an effective method for reducing CO2 emissions.However,the efficiency of CO2 hydrate sequestration can be influenced by the geological structure of se... Sequestration of CO2 as hydrates in seafloor sediments is an effective method for reducing CO2 emissions.However,the efficiency of CO2 hydrate sequestration can be influenced by the geological structure of seafloor reservoirs.To address this,the authors numerically investigate the effects of four reservoir structures(horizontal,inclined,anticline,and syncline)and dip angle on CO2 hydrate formation mass and sequestration security.The results show that different geological structures alter the temperature distribution within the reservoir,thereby modifying the stability zone of CO2 hydrates.At a dip angle of 30°,the hydrate formation mass(Fhyd)in the inclined,anticline,and syncline structures changes by-19.12%,+6.60%,and-7.19%,respectively,relative to the horizontal structure(baseline:342×10~6 kg).The distance from the top of the CO2 hydrate cap to the seafloor mudline(DH),a key security indicator,varies significantly:Compared to 25 m in the horizontal structure,DH changes by+160%,-20%,and+20%for the inclined,anticline,and syncline structures,respectively.As the dip angle increases,Fhyd in the anticline structure increases while DH decreases.In contrast,Fhyd decreases and DH increases in both the inclined and syncline structures.The temperature variation across structures is a key factor influencing Fhyd,while permeability is a major factor affecting the safety of CO2 sequestration.Therefore,if Fhyd is the sequestration objective,the anticline structure is the optimal reservoir.If DH is the objective,the inclined structure is the best reservoir.These findings provide critical insights for site selection in marine CO2 hydrate sequestration projects. 展开更多
关键词 CO2hydrate sequestration Geological structures Horizontal+inclined+anticline+syncline Numerical simulation Structural dip angle Phase Equilibrium zone Sequestration capacity Sequestration safety Carbon neutrality CCS
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Multiomics analysis reveals that chlorogenic acid alleviates heat stress-induced oxidative damage in prepubertal boar testes via the BLVRA-GPX3 pathway:in vivo and in vitro evidence 认领 引用
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作者 Shaoxuan Zhang Dali Wang +5 位作者 Jiajia Qi Jing Li Simin Liu Hao Sun Shuang Liang Boxing Sun 《Journal of Animal Science and Biotechnology》 SCIE CAS CSCD 2026年第2期729-748,共20页
Background Heat stress(HS)can impair boar testicular function,leading to reproductive issues.However,chlorogenic acid(CGA)has been shown to mitigate HS-induced damage in various livestock and poultry species.Prepubert... Background Heat stress(HS)can impair boar testicular function,leading to reproductive issues.However,chlorogenic acid(CGA)has been shown to mitigate HS-induced damage in various livestock and poultry species.Prepuberty is an important stage of testicular development in boars after birth.However,the protective effect of CGA on testicular HS injury during prepuberty boars and the underlying mechanisms are still not fully understood.Results In vivo,a total of 30 healthy boars with similar body weights and ages were obtained and randomly divided into 3 groups,which were fed a basal diet supplemented with CGA 0(the ND_TN group),0(the ND_HS group)or 1,000(the CGA_HS group)mg/kg.After being fed for 28 d,all the groups,except the ND_TN group,were treated with high temperature for 7 d,after which samples were collected from the boars and analysed.The results showed that CGA significantly mitigated the HS-induced reduction in T-AOC content in testicular tissue and sperm density.Mechanistically,multiomics analysis revealed that the genes differentially expressed by CGA and HS were predominantly associated with the glutathione metabolism pathway.The combined analysis of transcriptomics and proteomics revealed that only BLVRA was affected by both HS and CGA when the mRNA and protein levels of a gene showed differential expression with the same trend.In vitro studies confirmed that CGA modulated GPX3 expression via BLVRA,affected GPx activity,and attenuated HS-induced ROS accumulation.Conclusions In conclusion,prepubertal HS impairs the spermatogenic capacity of boars.BLVRA may mediate the testicular protective effect of CGA,although in vivo validation of this pathway is needed.This study contributes to elucidating the mechanisms underlying the effects of HS on prepubertal boar testicular development using multiomics approaches,laying a foundation for the potential utilization of CGA in swine production. 展开更多
关键词 Chlorogenic acid Heat stress Multiomics Oxidative damage Testis
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InvDesFlow: An AI-Driven Materials Inverse Design Workflow to Explore Possible High-Temperature Superconductors 认领 引用 被引量：4
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作者 Xiao-Qi Han Zhenfeng Ouyang +3 位作者 Peng-Jie Guo Hao Sun Ze-Feng Gao Zhong-Yi Lu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2025年第4期85-98,共14页
The discovery of new superconducting materials,particularly those exhibiting high critical temperature(Tc),has been a vibrant area of study within the field of condensed matter physics.Conventional approaches primaril... The discovery of new superconducting materials,particularly those exhibiting high critical temperature(Tc),has been a vibrant area of study within the field of condensed matter physics.Conventional approaches primarily rely on physical intuition to search for potential superconductors within the existing databases.However,the known materials only scratch the surface of the extensive array of possibilities within the realm of materials. 展开更多
关键词 physical intuition superconducting materialsparticularly condensed matter physicsconventional high temperature superconductors AI driven materials exploration inverse design
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Evaluation of the efficacy of electroacupuncture on pain and tolerance for unsedated colonoscopy:A study protocol for a prospective,randomized,sham-controlled trial 认领 引用 被引量：2
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作者 Yang ZHANG Zhi-dan WANG +7 位作者 Jie ZHANG Shuang REN Yue LIU Yun-xi LI Xiao-yu MA Xu WANG Hao SUN Ruo-shi LIU 《World Journal of Acupuncture-Moxibustion》 CAS CSCD 2025年第2期152-159,共8页
Background Unsedated colonoscopy is an important method used for diagnosing colorectal cancer,but it can cause discomfort such as pain and bloating,as well as anxiety.At present,the relief is mainly achieved through m... Background Unsedated colonoscopy is an important method used for diagnosing colorectal cancer,but it can cause discomfort such as pain and bloating,as well as anxiety.At present,the relief is mainly achieved through methods such as changing positions and manual pressing,but the efficacy is limited.Hence alternative therapies for sedation and analgesia in unsedated colonoscopy warrant further study.Electroacupuncture(EA)can simplify the procedure of anesthesia and analgesia,while the efficacy of EA on unsedated colonoscopy remains unclear.Therefore,a well-designed randomized controlled trial is needed to demonstrate the potential efficacy of acupuncture in unsedated colonoscopy,particularly for pain relief.Methods In this prospective randomized sham-controlled trial,105 eligible participants will be recruited and randomly assigned to either EA group(n=35),sham EA group(n=35),or control group(n=35)in a 1:1:1 ratio.The EA group will receive acupuncture intervention on bilateral Hegu(LI4),Neiguan(PC6),Zusanli(ST36),and Shenmen(HT7),with LI4 and PC6 on both sides connected to the EA device.The sham EA group will received non transdermal needling on points of no meridian,and deliberately connect the needle to the incorrect output socket of EA device to block the stimulation.The needling will conducted from 30 min before the unsedated colonoscopy to the end of the colonoscopy,the whole retention time would be approximately 40 min.The participants in the control group will not receive any acupuncture intervention.All participants of the three groups will not receive any other treatment.Primary outcomes:Numerical Rating Scale(NRS)reported by participants and Face Pain Scale Revised(FPS-R)evaluated by observers of four areas of the participants during the unsedated colonoscopy.Secondary outcomes:tolerance reported by endoscopists,tolerance reported by participants,satisfaction reported by endoscopists,satisfaction reported by participants,adverse events during the unsedated colonoscopy,postoperative discomfort,unsedated colonoscopy smoothness(cecal insertion time,unwinding time,success rate of one-time intubation).Both intention-to-treat(ITT)and per-protocol(PP)analyses will be performed to assess the efficacy of EA.Discussion The trial will explore the efficacy of relieving pain,improving tolerability,and reducing undesirable adverse events of EA for unsedated colonoscopy.The results of this trial will provide sound evidence for promoting the clinical application of EA for unsedated colonoscopy.Trial registration ClinicalTrials.gov Identifier:ChiCTR2300069903,retrospectively registered on March 16,2023. 展开更多
关键词 Electroacupuncture Unsedated colonoscopy Anesthesia Relieving pain Tolerance Randomized clinical trial
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Tailoring cryogenic thermal conductivity in EuTiO3-based magnetic refrigeration materials 认领 引用 被引量：2
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作者 Huicai Xie Jiaxin Jiang +5 位作者 Hao Sun Zhenxing Li Jun Liu Junfeng Wang Zhaojun Mo Jun Shen 《Journal of Rare Earths》 SCIE EI CAS CSCD 2025年第5期997-1002,共6页
As one of the core components of a magnetic refrigerator,magnetic refrigeration materials are expected to have not only a considerable magnetocaloric effect but also excellent thermal conductivity.The poor thermal con... As one of the core components of a magnetic refrigerator,magnetic refrigeration materials are expected to have not only a considerable magnetocaloric effect but also excellent thermal conductivity.The poor thermal conductivity of many competitive oxide-based magnetic refrigerants,exemplified by EuTiO3-based compounds,acts as a major limitation to their practical application.Therefore,improving the thermal conductivity of magnetic refrigeration materials has become a research emphasis of magnetic refrigeration in recent years.In this work,a series of EuTiO3(ETO)/Cu composites with different copper additives was prepared using a solid-phase reaction method by introducing appropriate amounts of copper powder.The influence of the introduction of copper on the phase composition,microstructure,thermal conductivity,and magnetocaloric effect of the composites was systematically investigated.Unexpectedly,the thermal conductivity of the composites is enhanced by up to 260%due to copper addition,accompanied by only a 5%decrease in magnetic entropy change and refrigerating capacity.Copper additive forms localized thermal conductive networks and promotes the densification process,resulting in significantly enhanced thermal conductivity of the composites.This work demonstrates the feasibility of improving the thermal conductivity of oxide-base d magnetic refrigeration materials by introducing highly thermally conductive substances. 展开更多
关键词 Thermal conductivity EuTiO3 Magnetic refrigeration Rare earths Thermal conductive network
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Nacre-inspired composite papers with enhanced mechanical and electrical insulating properties:Assembly of aramid papers with aramid nanofibers and basalt nanosheets 认领 引用 被引量：1
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作者 Dexian Ji Meiyun Zhang +6 位作者 Hao Sun Yuming Lyu Shelley Lymn Cormier Cong Ma Hui Zhang Yonghao Ni Shunxi Song 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第12期283-295,共13页
Aramid papers (AP), made of aramid fibers, demonstrate superiority in electrical insulation applications. Unfortunately, the strength and electrical insulating properties of AP remain suboptimal, primarily due to the ... Aramid papers (AP), made of aramid fibers, demonstrate superiority in electrical insulation applications. Unfortunately, the strength and electrical insulating properties of AP remain suboptimal, primarily due to the smooth surface and chemical inertness of aramid fibers. Herein, AP are modified via the nacre-mimetic structure composed of aramid nanofibers (ANF) and carbonylated basalt nanosheets (CBSNs). This is achieved by impregnating AP into an ANF-CBSNs (A-C) suspension containing a 3D ANF framework as the matrix and 2D CBSNs as fillers. The resultant biomimetic composite papers (AP/A-C composite papers) exhibit a layered “brick-and-mortar” structure, demonstrating superior mechanical and electrical insulating properties. Notably, the tensile strength and breakdown strength of AP/A-C5 composite papers reach 39.69 MPa and 22.04 kV mm−1, respectively, representing a 155 % and 85 % increase compared to those of the control AP. These impressive properties are accompanied with excellent volume resistivity, exceptional dielectric properties, impressive folding endurance, outstanding heat insulation, and remarkable flame retardance. The nacre-inspired strategy offers an effective approach for producing highly promising electrical insulating papers for advanced electrical equipment. 展开更多
关键词 Nacre-inspired structure Composite materials Aramid nanofibers Basalt nanosheets Electrical insulation Mechanical strength
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Geological parameters and gas mixture composition on enhanced coalbed methane recovery: A THM modeling approach 认领 引用 被引量：1
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作者 Lei Yang Chao-Jun Fan +5 位作者 Ming-Kun Luo Hai-Ou Wen Hao Sun Li-Jun Zhou Zhi-Heng Cheng Ze-Peng Zhang 《Petroleum Science》 SCIE EI CAS CSCD 2025年第5期2078-2095,共18页
The utilization of coalbed methane(CBM)cannot only alleviate the energy crisis,but also reduce greenhouse gas emissions.Gas injection is an effective method to enhance CBM recovery.Compared to single-gas injection,the... The utilization of coalbed methane(CBM)cannot only alleviate the energy crisis,but also reduce greenhouse gas emissions.Gas injection is an effective method to enhance CBM recovery.Compared to single-gas injection,the injection of CO2/N2 mixtures can balance the sharp decline in permeability caused by pure CO2 and the premature breakthrough by pure N2.In this study,a more comprehensive thermo-hydro-mechanical(THM)coupled mathematical model was developed,incorporating processes such as ternary gas non-isothermal adsorption,gas dissolution in water,gas-water two-phase flow,energy exchange,and coal deformation.After experimental validation,the model was applied to simulate the entire process of gas mixtures for enhanced CBM recovery(GM-ECBM).Results indicate that the permeability near the production well(Pw)initially decreases due to increased effective stress,then increases as a result of CH4 desorption.Near the injection well(Iw),the permeability first increases due to reduced effective stress and later stabilizes under the combined effects of effective stress and CO2/N2 adsorption.The initial CH4 pressure and coal seam permeability have the most significant impact on CH4 production,while the coal seam permeability and temperature significantly affect CO2/N2 injection.As the coal seam permeability increases,the optimal CO2/N2 ratio also increases accordingly.These findings provide important theoretical guidance for improving GM-ECBM efficiency in coal seams with varying permeabilities. 展开更多
关键词 GM-ECBM recovery THM coupled model Injection optimization Sensitivity analysis Permeability evolution
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Resin-free aramid honeycombs with extraordinary microwave absorption,thermal insulation,flame retardant and mechanical performance 认领 引用 被引量：1
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作者 Hao Sun Meiyun Zhang +5 位作者 Dexian Ji Cong Ma Baolong Yuan Ronghua Feng Jiaojun Tan Bin Yang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第30期132-143,共12页
Although lightweight aramid paper honeycombs are highly desirable for microwave absorption owing to their dual functions of both load-bearing and microwave-absorbing,unsatisfactory microwave absorption,inferior mechan... Although lightweight aramid paper honeycombs are highly desirable for microwave absorption owing to their dual functions of both load-bearing and microwave-absorbing,unsatisfactory microwave absorption,inferior mechanical and inadequate thermal properties present significant challenges for practical applications in diverse complex scenarios.Herein,lightweight,high-strength and flame-retardant aramid nanofibers-based honeycombs(MANHs)for integrated microwave absorption and thermal insulation are successfully fabricated via the hydrogen bonding assembly,mold forming and aerogel filling strategy using aramid waste as raw material.The dense network structure formed by the interwoven aramid nanofibers(ANFs)in the honeycomb body acts as a framework endows the MANH with impressive mechanical performance,and the specific strength and toughness of MANH reach 153.6 MPa g−1 cm−3 and 13.9 MJ m−3,respectively,which are 3.5 and 19 times higher than those of commercial microwave absorption honeycombs(CMAH).The ultralight MXene/ANFs aerogels(a density of 25 mg cm−3)with multiscale pore structure filled in the honeycomb apertures give the honeycomb outstanding microwave absorption performance,with a minimum reflection loss of−62.5 dB,and can cover the entire X-band with a thickness of only 3.5 mm.Meanwhile,compared with CMAH,the thermal insulation and flame-retardant performance of MANH are also significantly improved.Notably,MANH also demonstrates favorable sound absorption performance at high-frequency bands.The MANH is considered to be a promising candidate for aerospace and military stealth applications as a result of its lightweight,high strength,exceptional microwave absorption,and remarkable thermal insulation performance. 展开更多
关键词 Aramid nanofibers Multifunctional honeycomb Microwave absorption Mechanical property Flame retardancy
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Evaluation of surgical strategy for low anterior resection syndrome using preoperative low anterior resection syndrome score in China 认领 引用 被引量：1
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作者 Yang-Tao Pan Yi-Min Lv +4 位作者 Shi-Chao Zhou Dan-Yan Luo Hao Sun Wei-Feng Lao Wei Zhou 《World Journal of Gastrointestinal Surgery》 SCIE 2025年第1期175-183,共9页
BACKGROUND Despite improved survival rates in rectal cancer treatment,many patients experience low anterior resection syndrome(LARS).The preoperative LARS score(POLARS)aims to address the limitations of LARS assessmen... BACKGROUND Despite improved survival rates in rectal cancer treatment,many patients experience low anterior resection syndrome(LARS).The preoperative LARS score(POLARS)aims to address the limitations of LARS assessment by predicting outcomes preoperatively to enhance surgical planning.AIM To investigate the predictive accuracy of POLARS in assessing the occurrence of LARS.METHODS This study enrolled a total of 335 patients who underwent laparoscopic or robotic low anal sphincter-preserving surgery for rectal tumors.Patients were categorized into three groups according to their POLARS score:no LARS(score 0-20),minor LARS(score 21-29),and major LARS(score 30-42).The QLQ-C30/CR29 scores were compared among these groups,and the agreement between POLARS predictions and the actual LARS scores was analyzed.RESULTS The study population was divided into three groups:major LARS(n=51,27.42%),minor LARS(n=109,58.6%),and no LARS(n=26,13.98%).Significant differences in the QLQ-C30 scales of social function,diarrhea,and financial impact were detected between the no LARS and major LARS groups(P<0.05)and between the minor LARS and major LARS groups(P<0.05).Similarly,significant differences were detected in the QLQ-CR29 scales for blood and mucus in the stool,fecal incontinence,and stool frequency between the no LARS and minor LARS groups(P<0.05),as well as between the minor LARS and major LARS groups(P<0.05).The predictive precision for major LARS using the POLARS score was 82.35%(42/51),with a recall of 35.89%(42/117).The mean absolute error(MAE)between the POLARS score and the actual LARS score was 8.92±5.47.In contrast,the XGBoost(extreme gradient boosting)model achieved a lower MAE of 6.29±4.77,with a precision of 84.39%and a recall of 74.05%for predicting major LARS.CONCLUSION The POLARS score demonstrated effectiveness and precision in predicting major LARS,thereby providing valuable insights into postoperative symptoms and patient quality of life.However,the XGBoost model exhibited superior performance with a lower MAE and higher recall for predicting major LARS compared to the POLARS model. 展开更多
关键词 Low anterior resection syndrome Preoperative assessment Predictive Accuracy Quality of life Machine learning
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Baseline establishment,susceptibility monitoring and risk assessment of cyproflanilide,a novel meta-diamide insecticide,against Chilo suppressalis(Lepidoptera:Crambidae)in China 认领 引用
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作者 Wenchao Ge Songtao Qiao +7 位作者 Chong Liu Fangrui Guo Shuai Wang Hao Sun Yan Liu Fengxia Yang Shunfan Wu Congfen Gao 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2025年第11期4342-4354,共13页
The rice stem borer,Chilo suppressalis(Walker)(Lepidoptera:Crambidae),is one of the most serious pests in rice-growing areas,and it has developed resistance to most insecticides currently used in the field.Cyproflanil... The rice stem borer,Chilo suppressalis(Walker)(Lepidoptera:Crambidae),is one of the most serious pests in rice-growing areas,and it has developed resistance to most insecticides currently used in the field.Cyproflanilide is a novel meta-diamide insecticide that has shown high activities to multiple pests.Evaluating the risk of resistance to cyproflanilide in C.suppressalis is necessary for its preventive resistance management.Here we established the baseline susceptibility of C.suppressalis to cyproflanilide by the rice-seedling dipping method and topical application,and the LC50 and LD50 values were 0.026 mg L-1 and 0.122 ng/larva,respectively.The LC50 values of cyproflanilide in 37 field populations ranged from 0.012 to 0.061 mg L-1,and 25 field populations exhibited resistance to chlorantraniliprole with the highest LC50 value of 3,770.059 mg L-1.In addition,a logistic distribution model analysis indicated that only 0.048 mg L-1 of cyproflanilide was required to kill 90% field chlorantraniliprole-resistant populations of C.suppressalis,compared to 2,087.764 mg L-1 of chlorantraniliprole for a similar level of control.Resistance screening over 19 generations did not result in resistance to cyproflanilide(RR=3.1-fold).The realized heritability(h2)of resistance was estimated as 0.067 by using threshold trait analysis,suggesting a low risk of cyproflanilide resistance development in susceptible strains.The Cypro-SEL population(F10)had no obvious fitness cost(relative fitness=0.96),and no significant changes in sensitivity to seven tested insecticides.These findings suggested that cyproflanilide is a promising insecticide for the management of chlorantraniliprole-resistant C.suppressalis.Moreover,this integrated risk assessment provides scientific application guidelines for the sustainable resistance management of cyproflanilide for controlling C.suppressalis. 展开更多
关键词 cyproflanilide Chilo suppressalis susceptibility baseline risk assessment realized heritability
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Oriented superhydrophobic bimetallic MOF composite membrane for efficient ethanol-water separation 认领 引用
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作者 Fengkai Wang Yushan Zhang +6 位作者 Yiming Zhong Mengxin Shen Hao Sun Jie Li Naixin Wang Hong Meng Quan-Fu An 《Green Energy & Environment》 SCIE EI CAS CSCD 2025年第11期2167-2176,共10页
Extracting ethanol from aqueous solutions is important but challenging in industry.Pervaporation membranes show great promise for separating ethanol from water,with the design of their structure being crucial for enha... Extracting ethanol from aqueous solutions is important but challenging in industry.Pervaporation membranes show great promise for separating ethanol from water,with the design of their structure being crucial for enhancing performance.In this study,we developed an oriented bimetallic metal-organic framework(MOF)membrane,designated as ZIF-CoZn,for the pervaporation separation of ethanol from water.During crystal growth,bimetallic salts provide specific nucleation sites,and the competitive coordination between Co and Zn ions shifts the energetically favorable(100)plane to the(211)plane.This orientation enables precise molecular-level control over hydrophobic ligand arrangement,effectively repelling water molecules.Meanwhile,bimetallic competition enlarges pore sizes,facilitating ethanol permeation.When compared to single-metal MOF membranes made of cobalt or zinc,the separation factor of the ZIF-CoZn membrane for ethanol/water mixtures increased by 127%and 160%,respectively.Benefiting from the high roughness and increased exposure of hydrophobic ligands due to the preferential(211)orientation,ZIF-CoZn exhibits superhydrophobicity after vinyl-polydimethylsiloxane coating.The oriented ZIF-CoZn membrane was also scaled up to an area of 1 m2.This work provides valuable insights into optimizing MOF membrane structure and lays the foundation for its promotion and application in the industry. 展开更多
关键词 Pervaporation Bimetallic MOF membrane Ethanol/water separation Orientation Superhydrophobic
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Permeability-driven optimization of carbon dioxide injection timing in enhanced coalbed methane recovery 认领 引用
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作者 Lei Yang Chaojun Fan +5 位作者 Mingkun Luo Haiou Wen Lijun Zhou Quanle Zou Hao Sun Dezhen Wang 《International Journal of Coal Science & Technology》 SCIE EI CAS CSCD 2025年第6期175-193,共19页
Reducing greenhouse gas emissions and improving unconventional gas recovery are pressing challenges worldwide.This study investigates the leading role of coal permeability in CO2-enhanced coalbed methane recovery(C... Reducing greenhouse gas emissions and improving unconventional gas recovery are pressing challenges worldwide.This study investigates the leading role of coal permeability in CO2-enhanced coalbed methane recovery(CO2-ECBM)using an improved thermo-hydro-mechanical(THM)coupling model.The model is validated and applied to the simulation of CO2-ECBM process under varying permeability.The direct positive relationship between both cumulative CH4production and cumulative CO2injection with coal permeability,and operating duration of CO2-ECBM is negatively correlated with coal permeability.The delay in the injection start time will extend the operating duration of CO2-ECBM and overcome the problem of early CO2breakthrough.An increase in both delayed start time for injection and coal permeability progressively boosts CH4production,while diminishing CO2sequestration.The optimal start timing for CO2injection is contingent upon primary objectives,such as CO2sequestration or CH4production.For the primary constraint of CO2sequestration,the optimal starting time should be before the peak gas production.For the primary constraint of CH4production,the optimal starting time should be after the peak gas production.In analyzed instances,the optimal timing for CO2injection exhibits an inverse correlation with coal permeability.The results provide practical insights for CO2injection optimization and field applications. 展开更多
关键词 CO2-ECBM CO2sequestration CO2injection time THM coupling model Coal permeability
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