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Nuclear Science and Techniques 2024年第6期35卷 114-119页

作者： chun-Wang ma Yi-Jie Duan Ya-Fei Guo chun-Yuan Qiao Yu-Ting Wang Jie Pu Kai-Xuan Cheng Hui-Ling Wei College of Physics Henan Normal UniversityXinxiang 453007China Institute of Nuclear Science and Technology Henan Academy of SciencesZhengzhou 450015China

Neutron-skin thickness is a key parameter for a neutron-rich nucleus;however,it is difficult to *** the framework of the Lanzhou Quantum Molecular Dynamics(LQMD)model,a possible probe for the neutron-skin thickness(δ_(np))of neutron-rich ^(48)Ca was studied in the 140A MeV ^(48)Ca+^(9)Be projectile fragmentation reaction based on the parallel momentum distribution(p∥)of the residual fragments.A Fermi-type density distribution was employed to initiate the neutron density distributions in the LQMD simulations.A combined Gaussian function with different width parameters for the left side(Γ_(L))and the right side(Γ_(R))in the distribution was used to describe the p∥of the residual *** neutron-rich sulfur isotopes as examples,Γ_(L) shows a sensitive correlation withδ_(np) of ^(48)Ca,and is proposed as a probe for determining the neutron skin thickness of the projectile nucleus.

关键词： Neutron-skin thickness Projectile fragmentation Parallel momentum distribution Neutron-rich nucleus Quantum molecular dynamics model

Fluoro-functionalized plant biomass adsorbent:Preparation and application in extraction of trace perfluorinated compounds from environmental water samples

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Journal of Environmental Sciences 2024年第3期137卷 703-715页

作者： Xi Tan Yan Shi chun-Feng ma Quan Chi Yu-Hang Yang Wen-Xiang Zhang Hua-Ming Xiao Xian Wang Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission School of Chemistry and Materials ScienceSouth-Central Minzu UniversityWuhan 430074China School of Pharmaceutical Sciences South-Central Minzu UniversityWuhan 430074China Key Laboratory of Oilseeds Processing of Ministry of Agriculture Hubei Key Laboratory of Lipid Chemistry and NutritionOil Crops Research Institute of the Chinese Academy of Agricultural SciencesWuhan 430062China

Perfuorinated compounds(PFCs)are toxic and widely present in the environment,and therefore effective adsorbents are required to remove PFCs from environmental *** the present study,a new type of fuorinated biomass materials was synthesized via an ingenious fuorosilanization *** adsorbents were applied for the adsorption of 13typical PFCs,including perfuorocarboxylic acids(PFCAs)and perfuorosulfonic acids(PFSAs).By comparing their adsorption performance,Fluorinated cedar slag(FCS)was discovered to have the best absorption efficiency and enabled highly efficient enrichment of *** adsorption recovery of FCS with the investigated PFCs is greater than 90%under the optimal adsorption *** to the high affinity of F-F sorbent-sorbate interaction,FCS had good adsorption capacities of PFCs from aqueous solution,with the maximum adsorption capacity of 15.80 mg/g for PFOS and 10.71 mg/g for PFOA,***,the adsorption time could be achieved in a short time(8 min).Using the FCS absorbent,an innovative FCS-solid phase extraction assisted with high performance liquid chromatography-electrospray-tandem mass spectrometry(FCS-SPE-HPLC-ESI-MS/MS)method was first developed to sensitively detect PFCs in the environmental water *** intra-day and inter-day recovery rates of the 13 compounds ranged from 90.7%-104.3%,with the RSD of 2.1%-4.7%(intra-day)and 2.5%-8.5%(inter-day),*** research demonstrates the potential of the newly fuoro-functionalized plant biomass to adsorb PFCs from environmental water,with the advantages of high adsorption efficiencies,high antiinterference,easy operation and low economic cost.

关键词： Fluoro-functionalized biomass Perfuorinated compounds(PFCs) Adsorption efficiency mass spectrometry(MS) Fluorinated cedar slag(FCS)

Opportunities for production and property research of neutron-rich nuclei around N=126 at HIAF

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Nuclear Science and Techniques 2024年第6期35卷 101-113页

作者： Shao-Bo ma Li-Na Sheng Xue-Heng Zhang Shi-Tao Wang Kai-Long Wang chun-Wang ma Hool-Jin Ong Zhi-Yu Sun Shu-Wen Tang Yu-Hong Yu Xin-Tong Du Xiao-Bao Wei Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China University of Chinese Academy of Sciences Beijing 100049China College of Physics Henan Normal UniversityXinxiang 453007China Institute of Nuclear Science and Technology Henan Academy of ScienceZhengzhou 450046China Joint-Department for Nuclear Physics Lanzhou University and Institute of Modern PhysicsLanzhou 730000China Research Center for Nuclear Physics Osaka UniversityOsaka 567-0047Japan RIKEN Nishina Center Saitama 351-0198Japan Northwest Normal University Lanzhou 730070China

The study of nuclide production and its properties in the N=126 neutron-rich region is prevalent in nuclear physics and astrophysics *** upcoming High-energy FRagment Separator(HFRS)at the High-Intensity heavy-ion Accelerator Facility(HIAF),an in-flight separator at relativistic energies,is characterized by high beam intensity,large ion-optical acceptance,high magnetic rigidity,and high momentum resolution *** provides an opportunity to study the production and properties of neutron-rich nuclei around N=*** this paper,an experimental scheme is proposed to produce neutron-rich nuclei around N=126 and simultaneously measure their mass and lifetime based on the HFRS separator;the feasibility of this scheme is evaluated through *** results show that under the high-resolution optical mode,many new neutron-rich nuclei approaching the r-process abundance peak around A=195 can be produced for the first time,and many nuclei with unknown masses and lifetimes can be produced with high *** the time-of-flight corrected by the measured dispersive position and energy loss information,the cocktails produced from 208 Pb fragmentation can be unambiguously ***,the masses of some neutron-rich nuclei near N=126 can be measured with high precision using the time-of-flight magnetic rigidity *** indicates that the HIAF-HFRS facility has the potential for the production and property research of neutron-rich nuclei around N=126,which is of great significance for expanding the chart of nuclides,developing nuclear theories,and understanding the origin of heavy elements in the universe.

关键词： HFRS Fragmentation Neutron-rich nuclei around N=126 mass measurement Lifetime

Mechanical and damping performances of TPMS lattice metamaterials fabricated by laser powder bed fusion

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China Foundry 2024年第4期21卷 327-333页

作者： Yan-peng Wei Huai-qian Li Jing-jing Han Ying-chun ma Hao-ran Zhou Jing-chang Cheng Jian Shi Zhi-quan Miao Bo Yu Feng Lin National Key Laboratory of Advanced Casting Technologies Shenyang Research Institute of Foundry Co.Ltd.CAMShenyang 110022China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Laboratory of Space Physics Beijing 100076China

Lattice metamaterials based on three-period minimum surface(TPMS)are an effective means to achieve lightweight and high-strength materials which are widely used in various fields such as aerospace and ***,its vibration and noise reduction,and damping properties have not been fully ***,in this study,the TPMS structures with parameterization were designed by the method of surface migration,and the TPMS structures with high forming quality was manufactured by laser powder bed fusion(LPBF).The mechanical properties and energy absorption characteristics of the beam and TPMS structures were studied and compared by quasi-static *** modal shapes of the beam lattice structures and TPMS structures were obtained by the free modal analysis,and the damping properties of two structures were obtained by modal *** the two structures after heat treatment with the same porosity of 70%,the yield strength of the beam lattice structure reaches 40.76 MPa,elastic modulus is 20.38 GPa,the energy absorption value is 32.23 MJ·m^(-3),the damping ratio is 0.52%.The yield strength,elastic modulus,energy absorption value,and damping ratio of the TPMS structure are 50.74 MPa,25.37 GPa,47.34 MJ·m^(-3),and 0.99%,*** results show that TPMS structures exhibit more excellent mechanical properties and energy absorption,better damping performance,and obvious advantages in structural load and vibration and noise reduction compared with the beam lattice structures under the same porosity.

关键词： lattice metamaterials TPMS energy absorption damping laser powder bed fusion

Advancements in machine learning for material design and process optimization in the field of additive manufacturing

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China Foundry 2024年第2期21卷 101-115页

作者： Hao-ran Zhou Hao Yang Huai-qian Li Ying-chun ma Sen Yu Jian shi Jing-chang Cheng Peng Gao Bo Yu Zhi-quan Miao Yan-peng Wei National Key Laboratory of Advanced Casting Technologies Shenyang Research Institute of Foundry Co.Ltd.CAMShenyang 110022China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Laboratory of Space Physics Beijing 100076China School of materials Science and Engineering Nanyang Technological University639798Singapore

Additive manufacturing technology is highly regarded due to its advantages,such as high precision and the ability to address complex geometric ***,the development of additive manufacturing process is constrained by issues like unclear fundamental principles,complex experimental cycles,and high *** learning,as a novel artificial intelligence technology,has the potential to deeply engage in the development of additive manufacturing process,assisting engineers in learning and developing new *** paper provides a comprehensive overview of the research and applications of machine learning in the field of additive manufacturing,particularly in model design and process ***,it introduces the background and significance of machine learning-assisted design in additive manufacturing *** then further delves into the application of machine learning in additive manufacturing,focusing on model design and process ***,it concludes by summarizing and forecasting the development trends of machine learning technology in the field of additive manufacturing.

关键词： additive manufacturing machine learning material design process optimization intersection of disciplines embedded machine learning

Isoscaling properties for neutron-rich fragments in highly asymmetric heavy ion collision systems

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Chinese Physics C 2024年第6期48卷 136-144页

作者：彭丹马春旺乔春源刘星泉魏慧玲 Institute of Particle and Nuclear Physics College of PhysicsHenan Normal UniversityXinxiang 453007China Institute of Nuclear Science and Technology Henan Academy of SciencesZhengzhou 450046China Key Laboratory of Radiation Physics and Technology of the Ministry of Education Sichuan UniversityChengdu 610064China

Traditionally,isoscaling has been interpreted and applied within the framework of the grand canonical ensemble,based on the assumption that fragment production occurs following the attainment of a statistical equilibrium ***,the influence of the symmetry energy can lead to differences in the neutron and density distribution in neutron-rich *** in turn may impact the iso scaling parameters(usually denoted byαandβ).We examine the isoscaling properties for neutron-rich fragments produced in highly asymmetric systems on inverse kinematics,namely^(40,48)Ca and ^(58,64)Ni+^(9)Be at 140 MeV per *** evaluate α and β values and sort them as a function of the neutron excess I≡*** significant differences in a extracted from fragments within different ranges of I emphasize the importance of understanding the dependence of isoscaling parameters on fragments generated in various collision ***,the|β(N)|/α(Z)value for a specific fragment in small size and highly iso spin asymmetry systems can serve as a probe to detect the variations in neutron density and proton density in different regions of the nucleus and indicate the limitations of theoretical models in investigating these issues.

关键词： isoscaling symmetry energy nuclear density neutron-rich fragment heavy ion collision

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高速公路路面级配碎石垫层施工技术应用研究

现代工程科技 2024年第11期3卷 89-92页

作者：马春四川省交通建设集团有限责任公司路面工程分公司四川成都610041

进入21世纪以后,我国高速公路建设质量持续提升,施工技术不断进步。在高速公路路面施工中,级配碎石垫层施工技术颇为常用,该技术施工流程衔接紧密,工艺完整,能够有效提高路面施工质量。随着交通基础设施的不断发展,高速公路作为连接城... 详细信息

进入21世纪以后,我国高速公路建设质量持续提升,施工技术不断进步。在高速公路路面施工中,级配碎石垫层施工技术颇为常用,该技术施工流程衔接紧密,工艺完整,能够有效提高路面施工质量。随着交通基础设施的不断发展,高速公路作为连接城市的重要交通网络,其建设质量直接关系到人们的出行安全和道路使用寿命。在高速公路路面施工中,级配碎石垫层作为一种重要的施工技术,对于提升路面的承载能力、耐久性和抗裂性具有重要作用。以某高速公路工程为例,采用了文献分析、实地考察、统计分析等方法,首先分析了级配碎石垫层施工技术在高速公路路面施工中的应用意义,其次探讨了该技术在高速公路路面施工中的应用措施,最后提出了技术应用建议,希望能为公路工程施工建设提供借鉴。

关键词：级配碎石垫层施工技术高速公路路面施工应用方案

微小RNA-145/TGF-β参与游泳运动对2型糖尿病大鼠血管钙化的调控

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生理学报 2024年第4期76卷 526-536页

作者：徐港港马春莲杨翼武汉体育学院运动医学院运动训练监控湖北省重点实验室武汉430079 武汉体育学院体质监测与慢病干预研究中心武汉430079

本文旨在探索游泳运动对2型糖尿病大鼠血管钙化的作用及相关分子机制。将雄性Sprague Dawley(SD)大鼠随机分为正常对照组(NC组)、糖尿病对照组(DC组)和糖尿病运动组(DE组)。DC组和DE组腹腔注射链脲佐菌素(streptozotocin,STZ)联合喂养... 详细信息

本文旨在探索游泳运动对2型糖尿病大鼠血管钙化的作用及相关分子机制。将雄性Sprague Dawley(SD)大鼠随机分为正常对照组(NC组)、糖尿病对照组(DC组)和糖尿病运动组(DE组)。DC组和DE组腹腔注射链脲佐菌素(streptozotocin,STZ)联合喂养高脂饲料进行2型糖尿病造模。NC、DC组不进行运动,DE组进行8周游泳运动。用ELISA法检测大鼠血清糖化血红蛋白A1c(glycated hemoglobin A1c,HbA1c)水平;取大鼠主动脉,用试剂盒检测血管钙含量和碱性磷酸酶(alkaline phosphatase,ALP)活性,用Von Kossa染色检测钙盐沉积,用qRT-PCR检测主动脉微小RNA-145(microRNA-145,miR-145)表达,用Western blot检测平滑肌收缩标志分子、钙化标志分子及相关蛋白的表达。结果显示,相比NC组,DC组血糖、血清HbA1c水平、血管钙含量和ALP活性显著升高,平滑肌收缩标志分子平滑肌蛋白22α(smooth muscle protein 22α,SM22α)、α-平滑肌肌动蛋白(α-smooth muscle actin,α-Sma)蛋白表达水平显著下调,钙化标志分子骨桥蛋白(osteopontin,OPN)蛋白表达水平显著上调;相较于DC组,DE组血清HbA1c水平、血管钙含量和ALP活性显著降低,SM22α、α-Sma蛋白表达水平显著上调,OPN蛋白表达水平显著下调。相比NC组,DC组miR-145-5p表达水平显著下调,转化生长因子-β(transforming growth factor-β,TGF-β)、SmaD2、ERK1/2和p-ERK1/2蛋白表达水平显著上调;相比DC组,DE组miR-145-5p表达水平显著上调,TGF-β、ERK1/2和p-ERK1/2蛋白表达水平显著下调。上述结果提示,miR-145/TGF-β参与8周游泳运动对2型糖尿病状态下糖代谢紊乱、血管平滑肌细胞表型转换和血管钙化的改善作用。

关键词：游泳运动 2型糖尿病血管钙化微小RNA-145

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基于无人机航测的矿山地形测绘技术研究

世界有色金属 2024年第1期 124-126页

作者：马春萍安徽省地质测绘技术院安徽合肥230022

随着科技的不断发展,无人机技术已经广泛应用于各个领域,主要涉及到矿山地形测绘。传统的矿山地形测绘方法通常需要大量的人力、物力资源,而且受地形条件限制较大。基于无人机航测的矿山地形测绘技术具有高效、灵活、精确等优点,能够大... 详细信息

随着科技的不断发展,无人机技术已经广泛应用于各个领域,主要涉及到矿山地形测绘。传统的矿山地形测绘方法通常需要大量的人力、物力资源,而且受地形条件限制较大。基于无人机航测的矿山地形测绘技术具有高效、灵活、精确等优点,能够大大提高测绘效率、精度,降低成本。基于此,本文分析基于无人机航测的矿山地形测绘技术,为相关领域的研究、实践提供参考。

关键词：无人机航测矿山地形测绘精度效率成本

基于BIM技术的绿色建筑工程施工优化与效率提升研究

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智能建筑与智慧城市 2024年第2期 120-122页

作者：马春先中铁建设集团有限公司

文章研究了基于BIM技术的绿色建筑工程施工优化与效率提升,从土方工程、主体工程、机电工程等方面出发,分析了BIM技术在一般绿色建筑施工中的应用要点,同时着重强调了装配式建筑的绿色环保性能,针对预制构件生产、预制构件运输、现场吊... 详细信息

文章研究了基于BIM技术的绿色建筑工程施工优化与效率提升,从土方工程、主体工程、机电工程等方面出发,分析了BIM技术在一般绿色建筑施工中的应用要点,同时着重强调了装配式建筑的绿色环保性能,针对预制构件生产、预制构件运输、现场吊装施工等环节进行优化,为不同类型绿色建筑施工探索合适的BIM技术应用方法。

关键词： BIM技术绿色建筑工程施工优化效率提升

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