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Effective nucleus-nucleus potentials for heavy-ion fusion reactions

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Nuclear Science and Techniques 2025年第2期36卷 103-111页

作者： Ning Wang jin-Ming Chen Min Liu Present Address:Department of Physics Guangxi Normal UniversityGuilin 541004China Guangxi Key Laboratory of Nuclear Physics and Technology Guilin 541004China

Based on the Skyrme energy density functional and reaction Q-value,this study proposed an effective nucleus-nucleus poten-tial for describing the capture barrier in heavy-ion fusion *** 443 extracted barrier heights were well reproduced with a root-mean-square(RMS)error of 1.53 MeV,and the RMS deviations with respect to 144 time-dependent Hartree-Fock capture barrier heights were only 1.05 *** with the Siwek-Wilczyński formula,wherein three parameters were determined by the proposed effective potentials,the measured capture cross sections at energies around the barriers were reasonably well reproduced for several fusion reactions induced by nearly spherical nuclei as well as by nuclei with large deformations,such as^(154)Sm and^(238)*** shallow capture pockets and small values of the average barrier radii resulted in the reduction of the capture cross sections for 52,54Cr-and 64 Ni-induced reactions,which were related to the synthesis of new super-heavy nuclei.

关键词： Nucleus-nucleus potential Fusion reactions Superheavy nuclei Capture cross sections

Decoupling the roles of grain boundary strength and grain size hidden in grain-level electro-chemo-mechanical failure of solid-state electrolyte

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Journal of Energy Chemistry 2025年第2期101卷 685-691页

作者： Ming Xu Xuyang Wang Zhengqian jin Xingxing Jiao Ya Gao Zhongxiao Song Xieyu Xu Kai Xi Yangyang Liu School of Chemistry Engineering Research Center of Energy Storage Materials and Devices Ministry of Education Xi'an Jiaotong University State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Research Institute of Frontier Science Southwest Jiaotong University School of Instrument Science and Technology Xi'an Jiaotong University

Garnet lithium lanthanum zirconium oxide(Li7La3Zr2O12,LLZO) is a benchmark solid-state electrolyte（SSE） material receiving considerable attention owing to its high conductivity and chemical stability against Li *** its electro-chemo-mechanical failure mechanisms have been much investigated,the equivocal roles of grain boundary strength and grain size of LLZO remain under-explored,hindering further performance *** we decoupled the effects of grain size and grain boundary strength of polycrystalline LLZO via the combination of electrochemical kinetics and the cohesive zone *** discovered that the disintegration of LLZO is initiated by the accumulation of local displacements,which strongly relates to the changes in both grain size and grain boundary ***,variations in grain boundary strength affect the diffusion and propagation pathways of damage,while the failure of LLZO is determined by the grain *** LLZO grains facilitate transgranular damage under low grain boundary strength,which can alter local chemo-mechanics within the bulk of LLZO,leading to more extensive damage *** results showcase the structure optimization pathways by preferentially controlling the growth of lithium dendrites at grain boundaries and their penetration in garnet-type SSE.

关键词： Electro-chemo-mechanics Grain boundary Growth of lithium metal Solid-state electrolyte

Plastic flow and interfacial bonding behaviors of embedded linear friction welding process:Numerical simulation combined with thermophysical experiment

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Chinese Journal of Aeronautics 2025年第1期38卷 87-98页

作者： Tiejun MA Zhenguo GUO Xiawei YANG Junlong jin Xi CHEN Jun TAO Wenya LI Achilles VAIRIS Liukuan YU State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Friction Welding TechnologiesNorthwestern Polytechnical UniversityXi'an 710072China Aeronautical Key Laboratory for Welding and Joining Technologies AVIC Manufacturing Technology InstituteBeijing 100024China Mechanical Engineering Department University of West AtticaAthens 12241Greece Mathematic and Physic Department Xianjiaotong-liverpool UniversitySuzhou 215123China

In this study,a new linear friction welding(LFW)process,embedded LFW process,was put forward,which was mainly applied to combination manufacturing of long or overlong loadcarrying titanium alloy structural components in *** interfacial plastic flow behavior and bonding mechanism of this process were investigated by a developed coupling EulerianLagrangian numerical model using software ABAQUS and a novel thermo-physical simulation method with designed embedded hot compression *** addition,the formation mechanism and control method of welding defects caused by uneven plastic flow were *** results reveal that the plastic flow along oscillating direction of this process is even and *** the direction perpendicular to oscillation,thermo-plastic metals mainly flow downward along welding interface under coupling of shear stress and interfacial pressure,resulting in the interfacial plastic zone shown as an inverted“V”*** upward plastic flow in this direction is relatively weak,and only a small amount of flash is extruded from top of ***,the wedge block and welding components at top of joint are always in un-steady friction stage,leading to nonuniform temperature field distribution and un-welded *** to the results of numerical simulation,high oscillating frequency combined with low pressure and small amplitude is considered as appropriate parameter selection scheme to improve the upward interfacial plastic flow at top of joint and suppress the un-welded *** results of thermo-physical simulation illustrate that continuous dynamic recrystallization(CDRX)induces the bonding of interface,accompanying by intense dislocation movement and creation of many low-angle grain *** the interfacial bonding area,grain orientation is random with relatively low texture density(5.0 mud)owing to CDRX.

关键词： Embedded linear friction welding Plastic flow Interfacial bonding behavior Numerical simulation Thermo-physical simulation Temperature field Dynamic recrystallization

Impact of warming and nitrogen addition on soil greenhouse gas fluxes:A global perspective

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Journal of Environmental Sciences 2025年第5期151卷 88-99页

作者： Hongze Ma Xiaoyu Jia Weiguang Chen jingyi Yang jin Liu Xiaoshan Zhang Ke Cui Zhouping Shangguan Weiming Yan State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau College of Soil and Water Conservation Science and EngineeringNorthwest A&F UniversityYanglingShaanxi 712100China Institute of Soil and Water Conservation Chinese Academy of SciencesYanglingShaanxi 712100China University of Chinese Academy of Sciences Beijing 100049China Shaanxi Institute of Geo-Environment Monitoring Xi’an 710000China

Global warming and nitrogen(N)deposition have a profound impact on greenhouse gas(GHG)fluxes and consequently,they also affect climate ***,the global combined effects of warming and N addition on GHG fluxes remain to be fully *** address this knowledge gap,a globalmeta-analysis of 197 datasets was performed to assess the response of GHG fluxes to warming and N addition and their interactions under various climate and experimental *** results indicate that warming significantly increased CO_(2)emissions,while N addition and the combined warming and N addition treatments had no impact on CO_(2)***,both warming and N addition and their interactions exhibited positive effects on N_(2)O *** the combined warming and N addition treatments,warming was observed to exert a positive main effect on CO_(2)emissions,while N addition had a positive main effect on N_(2)O *** interactive effects of warming and N addition exhibited antagonistic effects on CO_(2),N_(2)O,and CH_(4)emissions,with CH_(4)uptake dominated by additive ***,we identified biome and climate factors as the two *** findings indicate that both warming and N addition substantially impact soil GHG fluxes and highlight the urgent need to investigate the influence of the combination of warming and N addition on terrestrial carbon and N cycling under ongoing global change.

关键词： Warming Nitrogen(N)addition Greenhouse gas(GHG)fluxes Interactive effects Biome

Influence of Al,Cu and Mn additions on diffusion behaviors in CoCrFeNi high-entropy alloys

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Transactions of Nonferrous Metals Society of China 2025年第1期35卷 184-193页

作者： Juan CHEN Zhen-zhong ZHANG jin-kun XIAO Li-jun ZHANG Testing Center Yangzhou UniversityYangzhou 225009China School of Mechanical Engineering Yangzhou UniversityYangzhou 225009China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

The interdiffusion coefficients in Al_(0.2)CoCrFeNi,CoCrCu_(0.2)FeNi,and CoCrFeMn_(0.2)Ni high-entropy alloys were efficiently determined by combining diffusion couple experiments and high-throughput determination of interdiffusion coefficients(HitDIC)software at 1273−1373 *** results show that the addition of Al,Cu,and Mn to CoCrFeNi high-entropy alloys promotes the diffusion of Co,Cr,and Fe *** comparison of tracer diffusion coefficients indicates that there is no sluggish diffusion in tracer diffusion on the thermodynamic temperature scale for the present Al_(0.2)CoCrFeNi,CoCrCu_(0.2)FeNi,and CoCrFeMn_(0.2)Ni high-entropy *** linear relationship between diffusion entropy and activation energy reveals that the diffusion process of atoms is unaffected by an increase in the number of components as long as the crystal structure remains unchanged.

关键词： Co−Cr−Fe−Ni high-entropy alloy diffusion interdiffusivity diffusion couple

Engineered iron-based metal-organic frameworks nanoplatforms for cancer theranostics: A mini review

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Chinese Chemical Letters 2025年第2期36卷 80-93页

作者： Yunlong Li Xinyu Zhang Shuang Liu Chunsheng Li Qiang Wang jin Ye Yong Lu Jiating Xu Key Laboratory of Forest Plant Ecology Ministry of Education College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University School of Laboratory Medicine Wannan Medical College Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances Northeast Forestry University

Up to now, numerous emerging methods of cancer treatment including chemodynamic therapy, photothermal therapy, photodynamic therapy, sonodynamic therapy, immunotherapy and chemotherapy have rapidly entered a new stage of development. However, the single treatment mode is often constrained by the complex tumor microenvironment. Recently, the nanomaterials and nanomedicine have emerged as promising avenues to overcome the limitation in cancer theranostics. Especially, metal-organic frameworks (MOFs) have gained considerable interests in cancer therapy because of their customizable morphologies, easy functionalization, large specific surface area, and good biocompatibility. Among these MOFs, iron-based MOFs (Fe-MOFs) are particularly promising for cancer treatment due to their properties as nano-photosensitizers, peroxidase-like activity, bioimaging contrast capabilities, and *** their structural regularity and synthetic tunability, Fe-MOFs can be engineered to incorporate organic molecules or other inorganic nanoparticles, thereby creating multifunctional nanoplatforms for single or combined theranostic modes. Herein, the minireview focuses on the recent advancements of the Fe-MOFs-based nanoplatforms for self-enhanced imaging and treatment at tumor sites. Furthermore,the clinical research development of Fe-MOFs-based nanoplatforms is discussed, addressing key challenges and innovations for the future. Our review aims to provide novice researchers with a foundational understanding of advanced cancer theranostic modes and promote their clinical applications through the modification of Fe-MOFs.

关键词： Bioimaging Cancer theranostics Catalytic therapy Engineered nanoplatforms Fe-based MOFs

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家畜反刍动物瘤胃产甲烷菌研究进展

中国饲料 2025年第1期 15-21,27页

作者：陶朱林王玉涛喀什大学生命与地理科学学院新疆喀什844000 新疆帕米尔高原生物资源与生态重点实验室新疆喀什844000

甲烷是温室气体之一,其来源之一是反刍动物瘤胃产甲烷菌利用二氧化碳、氢气、乙酸和甲基类等物质发酵产生;在畜牧业中,甲烷排放量的增加也预示着饲料的利用率降低。研究反刍动物瘤胃产甲烷菌群落结构有助于明确瘤胃产甲烷菌的甲烷代谢机... 详细信息

甲烷是温室气体之一,其来源之一是反刍动物瘤胃产甲烷菌利用二氧化碳、氢气、乙酸和甲基类等物质发酵产生;在畜牧业中,甲烷排放量的增加也预示着饲料的利用率降低。研究反刍动物瘤胃产甲烷菌群落结构有助于明确瘤胃产甲烷菌的甲烷代谢机理,进而为如何降低养殖中甲烷等温室气体的排放量、提高饲料的利用率提供理论基础。本文主要是对反刍动物瘤胃产甲烷菌群落结构研究方法、菌群群落组成、甲烷代谢机理和影响群落结构因素等方面进行综述,并对未来研究内容提出展望。

关键词：反刍动物古菌产甲烷菌群落结构甲烷代谢高通量测序

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基础研究对企业创新绩效的影响机制和边界

科研管理 2025年第1期46卷 114-122页

作者：张晓飞孙玉涛王茜大连理工大学经济管理学院辽宁大连116024

基础研究具有前瞻性和战略性,是孕育原始创新的源泉,同时也面临高风险和高不确定性,企业开展基础研究能否提升产品创新绩效一直备受争议。本文以2007—2022年中国医药制造企业为样本,建立面板负二项模型,检验纯基础研究和应用导向型基... 详细信息

基础研究具有前瞻性和战略性,是孕育原始创新的源泉,同时也面临高风险和高不确定性,企业开展基础研究能否提升产品创新绩效一直备受争议。本文以2007—2022年中国医药制造企业为样本,建立面板负二项模型,检验纯基础研究和应用导向型基础研究与企业产品创新绩效的关系,以及吸收能力和地区知识产权保护的调节作用。研究发现:(1)纯基础研究与企业产品创新绩效存在U型关系,应用导向型基础研究对企业产品创新绩效具有显著正向影响。(2)企业吸收能力越弱,纯基础研究与产品创新绩效U型曲线的形状越扁平,应用导向型基础研究对产品创新绩效的促进作用越弱。(3)地区知识产权保护强度越高,纯基础研究与企业产品创新绩效U型曲线的形状越陡峭,应用导向型基础研究对企业产品创新绩效的促进作用越强。研究结果揭示了不同类型基础研究对企业产品创新绩效的影响效果和边界条件,对企业提升产品创新绩效具有一定的启示。

关键词：纯基础研究应用导向型基础研究产品创新绩效吸收能力地区知识产权保护

Broadband low-frequency sound absorption of multifunctional composite metastructure

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Science China(Technological Sciences) 2025年第2期68卷 114-124页

作者： Yilong YANG Shanshan LIU Yan LI Tong GAO Yongdong PAN Yong LI Yabin jin School of Aerospace Engineering and Applied Mechanics Tongji UniversityShanghai 200092China State International Joint Research Center of Aerospace Design and Additive Manufacturing Northwestern Polytechnical UniversityXi’an 710072China Institute of Acoustics School of Physics Science and EngineeringTongji UniversityShanghai 200092China Shanghai Key Laboratory of Intelligent Sensing and Detection Technology School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China Shanghai Institute of Aircraft Mechanics and Control Shanghai 200092China

In this study,we fabricated multifunctional metastructures from carbon fiber-reinforced plastic composites using additive manufacturing *** metastructures are characterized by their lightweight,load-bearing capacity,and broadband low-frequency sound absorption *** metastructure consists of 36 unit cells,and non-local coupling mechanism was considered for designing the sound absorption *** developed an acoustic impedance theory tailored for the metastructure,facilitating an analysis of thermal and viscous dissipation *** is proven theoretically and experimentally that the proposed composite metastructure can achieve a noise reduction with an average sound absorption coefficient greater than 0.9 across frequencies in the rage of 330-1500 *** also studied the metastructure’s quasi-static and cyclic compression performance,confirming its efficient absorption capabilities after cyclic *** proposed design and additive manufacturing method for composite metastructures provides a novel pathway for creating lightweight,multifunctional structures with diverse applications,such as aerospace engineering.

关键词： composite metastructure broadband sound absorption additive manufacturing

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