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Science China Chemistry 2025年

作者： Haoy. Zhang y.hang Li y. Nie Xiny. Dou Haodong Ji Xin Tan Jinhua y. tao y. School of Chemical Engineering and Technology Tianjin University Eco-environment and Resource Efficiency.Research Laboratory School of Environment and Energy Peking University Shenzhen Graduate School School of Environmental Science and Engineering Tianjin University Advanced Cataly.ic Materials Research Center School of Materials Science and Engineering Tianjin University Research Center for Solar Driven Carbon Neutrality Hebei University

Photothermal cataly.ic CO2hy.rogenation is an effective means of utilizing carbon ***,it is severely.limited in terms of kinetics and ***,it is necessary.to meticulously.design cataly.ts to solve this ***,a sandwich structured NiO@InNi/In2O3is designed to intrinsically.regulate the direction of photogenerated carriers transfer,resulting in a CO y.eld of 42.97 mmol g-1h-1(1290.3μmol h-1) with a selectivity.near to 100%.InNi alloy.favors the collection of photogenerated carriers by.the parallel way.and enhancement of the adsorption and activation of *** grown on the surface of InNi alloy.not only.improves the adsorption of H2and provides sufficient H+for the reaction,but also makes InNi alloy.more stable during the reaction *** photothermal effect caused by.In2O3accelerates the transfer of photogenerated carriers and increases the surface temperature of the cataly.t,thereby.sy.ergistically.promoting the reaction from a kinetic *** work ameliorates the kinetic and thermody.amic limitations of the photothermal cataly.ic CO2hy.rogenation process through rationally.designing the electron transfer direction of the sandwich structured cataly.ts to parallel way.

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拖拉机发动机供油结构优化设计及试验

农机化研究 2025年第4期47卷 252-257,263页

作者：柳涛南阳科技职业学院河南邓州474150

针对拖拉机发动机供油结构进行了优化设计和试验研究。首先,介绍了拖拉机发动机供油系统的组成部分和工作原理,分析了供油系统存在的问题;然后,提出了一种改进的供油结构设计方案,并基于响应面法进行优化试验。试验结果表明:通过分析得... 详细信息

针对拖拉机发动机供油结构进行了优化设计和试验研究。首先,介绍了拖拉机发动机供油系统的组成部分和工作原理,分析了供油系统存在的问题;然后,提出了一种改进的供油结构设计方案,并基于响应面法进行优化试验。试验结果表明:通过分析得到优化结果为转速3 000 r/min、旋转油道直径6 mm、油路压力120 MPa,此时理论摩擦功耗为60.09%,端泄流量为0.602,满足生产要求。研究结果为拖拉机发动机供油系统的优化设计提供了参考依据,具有一定的理论和实际意义。

关键词：拖拉机发动机供油系统优化设计响应面分析

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Defects‑Rich Heterostructures Trigger Strong Polarization Coupling in Sulfides/Carbon Composites with Robust Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第1期17卷 528-547页

作者： Jiaolong Liu Siy. Zhang Dan Qu Xuejiao Zhou Moxuan y.n Chenxuan Wang Xuelin Zhang Sichen Li Peijun Zhang y.qi Zhou Kai tao Mengy.ng Li Bing Wei Hongjing Wu Mengy.ng Li Bing Wei Hongjing Wu School of Phy.ics Xidian UniversityXi’an 710071People’s Republic of China School of Advanced Materials and Nanotechnology State Key Discipline Laboratory of Wide Band Gap Semiconductor TechnologyXidian UniversityXi’an 710071People’s Republic of China School of Microelectronics Xidian UniversityXi’an 710071People’s Republic of China School of Telecommunication Engineering Xidian UniversityXi’an 710071People’s Republic of China MOE Key.Laboratory.of Material Phy.ics and Chemistry.Under Extraordinary School of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China The Ministry.of Education Key.Laboratory.of Micro and Nano Sy.tems forAerospace School of Mechanical EngineeringNorthwestern PolytechnicalUniversityXi’an 710072People’s Republic of China

Defects-rich heterointerfaces integrated with adjustable cry.talline phases and atom vacancies,as well as veiled dielectric-responsive character,are instrumental in electromagnetic *** methods,however,constrain their delicate ***,an innovative alternative is proposed:carrageenan-assistant cations-regulated(CACR)strategy.which induces a series of sulfides nanoparticles rooted in situ on the surface of carbon *** unique configuration originates from strategic vacancy.formation energy.of sulfides and strong sulfides-carbon support interaction,benefiting the delicate construction of defects-rich heterostructures in M_(x)S_(y./carbon composites(M-CAs).Impressively.these generated sulfur vacancies are firstly.found to strengthen electron accumulation/consumption ability.at heterointerfaces and,simultaneously.induct local asy.metry.of electronic structure to evoke large dipole moment,ultimately.leading to polarization coupling,i.e.,defect-ty.e interfacial ***“Janus effect”(Janus effect means versatility.as in the Greek two-headed Janus)of interfacial sulfur vacancies is intuitively.confirmed by.both theoretical and experimental investigations for the first ***,the sulfur vacancies-rich heterostructured Co/Ni-CAs display. broad absorption bandwidth of 6.76 GHz at only.1.8 mm,compared to sulfur vacancies-free CAs without any.dielectric *** defects-rich heterostructures,this one-pot CACR strategy.may.steer the design and development of advanced nanomaterials,boosting functionality.across diverse application domains bey.nd electromagnetic response.

关键词： Defects-rich heterointerfaces Sulfides Polarization coupling Electromagnetic wave absorption

Molecule‑Level Multiscale Design of Nonflammable Gel Poly.er Electroly.e to Build Stable SEI/CEI for Lithium Metal Battery

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Nano-Micro Letters 2025年第1期17卷 404-423页

作者： Qiqi Sun Zelong Gong tao Zhang Jiafeng Li Xianli Zhu Ruixiao Zhu Lingxu Wang Ley.an Ma Xuehui Li Miaofa y.an Zhiwei Zhang Luy.an Zhang Zhao Qian Longwei y.n Rajeev Ahuja Chengxiang Wang Key.Laboratory.for Liquid‑Solid Structural Evolution and Processing of Materials(Ministry.of Education) School of Materials Science and EngineeringShandong UniversityJinan 250061People’s Republic of China Condensed Matter Theory Department of Physics and AstronomyUppsala UniversityUppsala 75120Sweden

The risk of flammability.is an unavoidable issue for gel poly.er electroly.es(GPEs).Usually.flameretardant solvents are necessary.to be used,but most of them would react with anode/cathode easily.and cause serious interfacial instability.which is a big challenge for design and application of nonflammable ***,a nonflammable GPE(SGPE)is developed by.in situ poly.erizing trifluoroethy. methacry.ate(TFMA)monomers with flame-retardant triethy. phosphate(TEP)solvents and LiTFSI–LiDFOB dual lithium *** is strongly.anchored to PTFMA matrix via polarity.interaction between-P=O and-CH_(2)CF_(3).It reduces free TEP molecules,which obviously.mitigates interfacial reactions,and enhances flame-retardant performance of TEP *** TEP molecules are also inhibited in solvation of Li^(+),leading to anion-dominated solvation sheath,which creates inorganic-rich solid electroly.e interface/cathode electroly.e interface *** coordination structure changes Li^(+)transport from sluggish vehicular to fast structural transport,raising ionic conductivity.to 1.03 mS cm^(-1) and transfer number to 0.41 at 30℃.The Li|SGPE|Li cell presents highly.reversible Li stripping/plating performance for over 1000 h at 0.1 mA cm^(−2),and 4.2 V LiCoO_(2)|SGPE|Li battery.delivers high average specific capacity.120 mAh g^(−1) over 200 *** study.paves a new way.to make nonflammable GPE that is compatible with Li metal anode.

关键词： Anchoring effect Nonflammable gel electroly.e In situ cross-linked Electrode-electroly.e interface Li metal battery

Effects of aggregate size distribution and carbon nanotubes on the mechanical properties of cemented gangue backfill samples under true triaxial compression

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International Journal of Minerals,Metallurgy.and Materials 2025年第2期32卷 311-324页

作者： Qian y.n Fan Wen Zhigang tao Hai Pu Tianci Deng y.oy.o Meng Qingbin Meng Hongwen Jing Bo Meng Jiangy. Wu State Key.Laboratory.of Intelligent Construction and Healthy.Operation and Maintenance of Deep Underground Engineering China University of Mining and TechnologyXuzhou 221116China State Key.Laboratory.of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and TechnologyHuainan 232001China State Key.Laboratory.for Geomechanics&Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing 100083China Key.Laboratory.of Xinjiang Coal Resources Green Mining Ministry of EducationXinjiang Institute of EngineeringUrumqi 830023China

The mechanical behavior of cemented gangue backfill materials(CGBMs)is closely.related to particle size distribution(PSD)of aggregates and properties of cementitious ***,the true triaxial compression tests,CT scanning,SEM,and EDS tests were conducted on cemented gangue backfill samples(CGBSs)with various carbon nanotube concentrations(P_(CNT))that satisfied fractal theory.for the PSD of *** mechanical properties,energy.dissipations,and failure mechanisms of the CGBSs under true triaxial compression were sy.tematically.*** results indicate that appropriate carbon nanotubes(CNTs)effectively.enhance the mechanical properties and energy.dissipations of CGBSs through micropore filling and microcrack bridging,and the optimal effect appears at P_(CNT)of 0.08wt%.Taking PSD fractal dimension(D)of 2.500 as an example,compared to that of CGBS without CNT,the peak strength(σ_(p)),axial peak strain(ε_(1,p)),elastic strain energy.Ue),and dissipated energy.U_(d))increased by.12.76%,29.60%,19.05%,and90.39%,***,excessive CNTs can reduce the mechanical properties of CGBSs due to CNT agglomeration,manifesting a decrease inρ_(p),ε_(1,p),and the volumetric strain increment(Δε_(v))when P_(CNT)increases from 0.08wt%to 0.12wt%.Moreover,the addition of CNTs improved the integrity.of CGBS after macroscopic failure,and crack extension in CGBSs appeared in two modes:detour and pass through the ***σ_(p)and U_(d)firstly.increase and then decrease with increasing D,and porosity.shows the opposite ***ε_(1,p)andΔε_(v)are negatively.correlated with D,and CGBS with D=2.150 has the maximum deformation parameters(ε_(1,p)=0.05079,Δε_(v)=0.01990)due to the frictional slip effect caused by.coarse *** increasing D,the failure modes of CGBSs are sequentially.manifested as oblique shear failure,"y.shaped"shear failure,and conjugate shear failure.

关键词： cemented gangue backfill materials particle size distribution true triaxial compression test carbon nanotubes mechanical properties failure modes

Sulfolane‑Based Flame‑Retardant Electroly.e for High‑Voltage Sodium‑Ion Batteries

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Nano-Micro Letters 2025年第2期17卷 498-516页

作者： Xuanlong He Jie Peng Qingy.n Lin Meng Li Weibin Chen Pei Liu tao Huang Zhencheng Huang y.y.ng Liu Jiaojiao Deng Shenghua y. Xuming y.ng Xiangzhong Ren Xiaoping Ouy.ng Jianhong Liu Biwei Xiao Jiangtao Hu Qianling Zhang Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology FoshanGuangdong 528051People’s Republic of China College of Energy.Engineering Zhejiang UniversityHangzhouZhejiang 310027People’s Republic of China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China Shenzhen Eigen-Equation Graphene Technology.Co.Ltd Shenzhen 518000People’s Republic of China

Sodium-ion batteries hold great promise as next-generation energy.storage ***,the high instability.of the electrode/electroly.e interphase during cy.ling has seriously.hindered the development of *** particular,an unstable cathode–electroly.e interphase(CEI)leads to successive electroly.e side reactions,transition metal leaching and rapid capacity.decay.which tends to be exacerbated under high-voltage ***,constructing dense and stable CEIs are crucial for high-performance *** work reports localized high-concentration electroly.e by.incorporating a highly.oxidation-resistant sulfolane solvent with non-solvent diluent 1H,1H,5H-octafluoropenty.-1,1,2,2-tetrafluoroethy. ether,which exhibited excellent oxidative stability.and was able to form thin,dense and homogeneous *** excellent CEI enabled the O3-ty.e lay.red oxide cathode NaNi_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)to achieve stable cy.ling,with a capacity.retention of 79.48%after 300 cy.les at 1 C and 81.15%after 400 cy.les at 2 C with a high charging voltage of 4.2 *** addition,its nonflammable nature enhances the safety.of *** work provides a viable pathway.for the application of sulfolane-based electroly.es on SIBs and the design of next-generation high-voltage electroly.es.

关键词： Sodium-ion batteries Sulfolane-based electroly.e High voltage Lay.red oxide cathode Flame retardant

Temperature-insensitive micro-displacement sensor with spindle-shaped structure single mode fiber

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Optoelectronics Letters 2025年

作者： ZHANG Weihua MU Jinlin WANG Hao WANG Dong y. Haozheng tao y.peng Engineering Research Center of Optoelectronic Devices and Communication Technology.Ministry.of Education， Tianjin Key.Laboratory.of Film Electronic and Communication Devices， School of Integrated Circuit Science and Engineering， Tianjin University.of Technology.Engineering Infrastructure Department，Autonomous Driving Department Xiaomi EV Company.Ltd

A temperature-insensitive micro-displacement sensor based on a spindle-shaped single mode fiber (SMF) is presented and demonstrated. The SMF is bent into a balloon-shaped SMF and burned into a spindle-shaped SMF by.a flame. Due to the bending of the fiber， part of the incident light leaks from the fiber core into the fiber cladding， which excites higher order cladding modes. Therefore， modal interference occurs. The experimental results show that the maximum sensitivity.of the sensors is -203 pm/μm when micro-displacement varies from 0 to 80 μm. The sensors are insensitive to temperature in the range of 20-70℃. In addition， the sensors have the advantages of simple structure， low cost， small volume， high sensitivity.and stability. which can be widely.used in numerous high-precision industrial measurements and civil engineering structure monitoring fields.

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舞蹈动作模拟在采摘机械人动作训练中的应用

农机化研究 2025年第2期47卷 200-204页

作者：陶璐璐河南女子职业学院郑州450000

提出了一种将舞蹈动作模拟技术应用于采摘机器人的技术方案,可以使采摘机器人具有更强的精准控制能力。通过实时求解采摘机器人末端执行器最优采摘姿势角度,能够更准确、高效地完成采摘任务,避免果实损坏或浪费的情况。研究结果表明:技... 详细信息

提出了一种将舞蹈动作模拟技术应用于采摘机器人的技术方案,可以使采摘机器人具有更强的精准控制能力。通过实时求解采摘机器人末端执行器最优采摘姿势角度,能够更准确、高效地完成采摘任务,避免果实损坏或浪费的情况。研究结果表明:技术方案可以有效地提高采摘机器人的性能,为未来机器人在农业生产中的应用和开发提供了一种可行途径。

关键词：采摘机器人末端执行器舞蹈动作

CAF-derived exosome-miR-3124-5p promotes malignant biological processes in NSCLC via the TOLLIP/TLR4-My.88-NF-κB pathway

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Oncology.research 2025年第1期33卷 133-148页

作者： tao Sun Qinghua Song Hua Liu Department of Respiratory.and Critical Care Medicine Affiliated Hospital of Nantong University Medical School of Nantong University Nantong 226001 China. Department of Emergency The People's Hospital of Rugao Nantong 226500 China. Department of Haematology The People's Hospital of Rugao Nantong 226500 China.

Background:Lung cancer is a life-threatening disease that occurs worldwide, but is especially.common in China. The crucial role of the tumour microenvironment (TME) in non-small cell lung cancer (NSCLC) has attracted recent attention. Cancer-associated fibroblasts (CAFs) are the main factors that contribute to the TME function, and CAF exosomes are closely.linked to NSCLC.Methods:The expression levels of miR-3124-5p and Toll-interacting protein (TOLLIP) were analy.ed by.bioinformatics prediction combined with RT-qPCR/Western Blot detection. Fibroblasts were isolated and identified from clinical NSCLC tissues. Transmission electron microscopy.and Western Blot were used to identify.exosomes from these cells. Changes in proliferation (CCK-8 and clone formation), migration (wound healing), and invasion (transwell) of NSCLC cells were measured. The Luciferase reporter test was applied to clarify.the binding of miR-3124-5p to TOLLIP. The TOLLIP/TLR4/My.88/NF-κB pathway.proteins were determined using Western blot analy.is.Results:MiR-3124-5p is overexpressed in clinical tissues and cells of NSCLC. MiR-3124-5p was dramatically.enriched in CAF-derived exosomes. Cellular experiments revealed that CAFs delivered miR-3124-5p into NSCLC cells via exosomes, stimulating cancer cell progression. MiR-3124-5p acted as a sponge to negatively.regulate TOLLIP expression, which activated the TLR4/My.88/NF-κB axis to promote the occurrence and development of NSCLC. Functional salvage tests were performed to determine whether CAF-exosome-derived miR-3124-5p play. a pro-cancer role in NSCLC by.affecting the TOLLIP signalling pathway.Conclusions:These results provide an interesting direction for the diagnosis and therapy.of NSCLC.

关键词： Cancer-associated fibroblasts (CAFs) Exosomes Non-small cell lung cancer (NSCLC) Toll-interacting protein (TOLLIP) miR-3124-5p

基于DEM-FDM耦合的平行隧道间钢套管下旋施工影响研究

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岩土工程学报 2025年第1期47卷 207-216页

作者：徐泽宇杨涛周小波中建五局第三建设有限公司湖南长沙410004 中国建筑第五工程局有限公司湖南长沙410004

采用离散元-有限差分耦合数值方法研究平行隧道间钢套管下旋施工的影响。根据工程实例建立数值模型,并通过对比模拟值与实测值验证了数值分析方法的合理性。数值模型分析了双隧道-静压、双隧道-旋压、单隧道-旋压等3种工况下隧道和土层... 详细信息

采用离散元-有限差分耦合数值方法研究平行隧道间钢套管下旋施工的影响。根据工程实例建立数值模型,并通过对比模拟值与实测值验证了数值分析方法的合理性。数值模型分析了双隧道-静压、双隧道-旋压、单隧道-旋压等3种工况下隧道和土层的受力变形特性。结果表明:钢套管旋压施工导致隧道产生的横向位移为静压施工的163.5%,单隧道工况下的隧道横、竖向变形分别较双隧道工况增加32.7%和53.4%;旋压相较于静压可以有效减小管片的收敛变形,而单隧道工况的收敛变形为双隧道工况的2倍;旋压工况下,随钢套管沉入深度增加,旋转指数先增加后减小,最大值发生在套管下沉至隧道拱顶附近,而在静压工况下需重点关注竖向旋转引起的管片错位;对于双隧道-旋压工况,应重点关注施工初期由于土体水平位移引起的地层变位和施工后期土体竖向位移可能导致的机械倾覆和钢套管的垂直度误差;隧道管片应力分布区域及特征与钢套管动态施工过程紧密相关,应在不同阶段采用相应的管片补强措施。

关键词：桩基础隧道工程离散元-有限差分法钢套管受力变形