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China Foundry 2025年第1期22卷 75-82页

作者： Lin-fei Xia Wen-bo Li Zuo-shan Wei Yu-ying Wu Xiang-fa Liu China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationShandong UniversityJinan 250061China shandong Key Laboratory of Advanced Aluminum Materials and Technology Binzhou Institute of TechnologyBinzhou 256600ShandongChina

Near-eutectic Al-Si alloys are widely used in automotive manufacturing due to their superior wear resistance and high temperature *** of high Si content,the grain refinement of near-eutectic Al-Si alloy has been a problem for many *** this study,the effect of deep cryogenic treatment(DCT)on the microstructure and mechanical properties of Al-12Si-4Cu-2ni-Mg alloy with addition of Al-Ti-C-B master alloy was fully *** show that the average grain size of the alloy is greatly reduced from 0.92 mm to 0.50 mm,and the eutectic Si and Al7Cu4ni precipitates are spheroidized and refined in Al-12Si-4Cu-2ni-Mg after DCT for 24 h and aging *** these changes of microstructures result in a significant increment of about 22.5%in elongation and a slight enhancement of about 6.8%in tensile ***,the refinement of microstructure also significantly improves the fatigue life of the alloy.

关键词： deep cryogenic treatment near-eutectic Al-Si master alloy microstructure mechanical properties

Preparation of FeConi medium entropy alloy from Fe^(3+)-Co^(2+)-ni^(2+)solution system

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 92-101页

作者： Zongyou Cheng qing Zhao Mengjie Tao Jijun Du Xingxi Huang Chengjun Liu Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China Engineering Research Center of Frontier Technologies for Low-carbon Steelmaking(Ministry of Education) Shenyang 110819China

In recent years,medium entropy alloys have become a research hotspot due to their excellent physical and chemical *** controlling reasonable elemental composition and processing parameters,the medium entropy alloys can exhibit similar properties to high entropy alloys and have lower *** this paper,a FeConi medium entropy alloy precursor was prepared via sol-gel and coprecipitation methods,respectively,and FeConi medium entropy alloys were prepared by carbothermal and hydrogen *** phases and magnetic properties of FeConi medium entropy alloy were *** showed that FeConi medium entropy alloy was produced by carbothermal and hydrogen reduction at 1500℃.Some carbon was detected in the FeConi medium entropy alloy prepared by carbothermal *** alloy prepared by hydrogen reduction was uniform and showed a relatively high ***,the hydrogen reduction product exhibited better saturation magnetization and lower coercivity.

关键词： medium entropy alloy sol-gel co-precipitation carbothermal hydrogen reduction

糖尿病肾脏疾病发生发展中程序性细胞死亡作用机制的研究

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中国糖尿病杂志 2025年第1期33卷 28-35页

作者：裴珍珍张珊周扬陈玉鹏常瑞婷倪青北京中医药大学研究生院中国中医科学院广安门医院内分泌科

目的探讨程序性细胞死亡（PCD）对DKD发生发展的作用机制。方法检索基因表达综合数据库，获取数据集GSE30529和GSE30122，分析DKD差异表达基因（DEGs）。通过基因集富集分析网站、铁死亡数据库、自噬数据库并结合既往相关文献，分别... 详细信息

目的探讨程序性细胞死亡（PCD）对DKD发生发展的作用机制。方法检索基因表达综合数据库，获取数据集GSE30529和GSE30122，分析DKD差异表达基因（DEGs）。通过基因集富集分析网站、铁死亡数据库、自噬数据库并结合既往相关文献，分别获取凋亡、坏死性凋亡、焦亡、自噬和铁死亡相关基因，并与上述DKD差异基因交集，鉴定DKD差异表达的PCD相关基因。通过基因本体（GO）和京都基因与基因组百科全书（KEGG）通路富集，分析核心基因的生物学功能和潜在通路。采用蛋白质-蛋白质相互作用网络，分析目的基因的互作关系，并借助Cytoscape中Cyto Hubba插件筛选Hub基因。结果 GSE30529数据集共获取460个DEGs,GSE30122数据集共获取992个DEGs，合并去重后共获取932个DEGs。对DEGs与PCD相关基因取交集，获取凋亡基因61个，坏死性凋亡基因7个，焦亡基因39个，自噬基因18个，铁死亡基因16个。KEGG显示，与PCD中凋亡、坏死性凋亡、焦亡和自噬相关的DEGs富集通路主要为糖基化终末产物-糖基化终末产物受体（AGE-RAGE）、IL-17、核因子κB(NF-κB)、TNF信号通路，与铁死亡相关的DEGs富集通路主要为脂肪酸降解通路。GO富集显示，DKD中差异表达的PCD相关基因的生物学过程主要涉及对NF-κB诱导激酶/NF-κB、IL-1、IL-17等信号的调控。结论 DKD中差异表达的PCD相关基因，主要富集在AGE-RAGE、IL-17、NF-κB、TNF等相关的信号通路中，PCD在DKD发病中的关键作用。

关键词：糖尿病肾脏疾病程序性细胞死亡基因表达综合数据库生物信息学

深空探测中考虑乘性噪声影响的自主导航滤波算法设计

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系统工程与电子技术 2025年第1期47卷 287-295页

作者：卢山张世源侯月阳张晓彤李晴上海航天控制技术研究所上海201109 上海市空间智能控制技术重点实验室上海201109

针对深空探测任务中航天器的状态估计问题,考虑到基于光学相机的自主导航系统在建立观测方程时所使用的坐标系转换矩阵含有由星敏感器引入的测量噪声,该噪声与量测状态相互耦合,属于乘性噪声,建立带有乘性噪声的光学自主导航系统模型。... 详细信息

针对深空探测任务中航天器的状态估计问题,考虑到基于光学相机的自主导航系统在建立观测方程时所使用的坐标系转换矩阵含有由星敏感器引入的测量噪声,该噪声与量测状态相互耦合,属于乘性噪声,建立带有乘性噪声的光学自主导航系统模型。针对系统存在乘性噪声时,仅适用于处理加性噪声的传统滤波器估计误差增大的问题,将乘性噪声矩阵引入高斯滤波算法的递推公式进行推导,并结合混合阶球面单形-径向容积卡尔曼滤波器(mixed-order spherical simplex-radial cubature Kalman filter,MSSRCKF)的数值积分方法,提出混合阶容积-乘性卡尔曼滤波器(mixed-order cubature-multiplicative Kalman filter,MC-MKF)。该滤波器能够对由星敏感器引入观测方程的高斯以及非高斯乘性噪声进行处理,在不增加计算复杂度的情况下提升滤波器的估计精度。最后,将MC-MKF应用于自主导航系统模型,并与MSSRCKF进行比较分析。仿真结果表明,当系统存在乘性噪声时,MC-MKF的估计精度明显优于MSSRCKF,且计算量与MSSRCKF基本一致。

关键词：深空探测光学自主导航乘性噪声非线性滤波

Application of ultrasound elastography and splenic size in predicting post-hepatectomy liver failure:Unveiling new clinical perspectives

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World Journal of Gastroenterology 2025年第4期31卷 151-155页

作者： shan Xu Tao Zhang Bin-Bo He Jie Liu Tao Kong qing-Yu Zeng Department of Gastroenterology Nanchong Central HospitalThe Second Clinical Medical CollegeNorth Sichuan Medical CollegeNanchong 637000Sichuan ProvinceChina

In this article,we discuss the study by Cheng et al,published in the World Journal of Gastroenterology,focusing on predictive methods for post-hepatectomy liver failure(PHLF).PHLF is a common and serious complication,and accurate prediction is critical for clinical *** study examines the potential of ultrasound elastography and splenic size in predicting *** elastography reflects liver functional reserve,while splenic size provides additional predictive *** integrating these factors with serological markers,we developed a comprehensive prediction model that effectively stratifies patient risk and supports personalized clinical *** approach offers new insights into predicting *** methods not only assist clinicians in identifying high-risk patients earlier but also provide scientific support for personalized treatment *** research will aim to validate the model's accuracy with larger sample sizes,further enhancing the clinical application of these non-invasive indicators.

关键词： Ultrasound elastography Splenic size Post-hepatectomy liver failure Prediction model Risk stratification

Effect of Carbon Particles with Different Topological Shape on the Rheological Behavior of PVA Aqueous Dispersion

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Chinese Journal of Polymer Science 2022年第11期40卷 1402-1410页

作者： qing-Sheng ni Miao Du Guo-Rong shan Yi-Hu Song Qiang Zheng State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027China Institute of Zhejiang University-Quzhou Quzhou324000China Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou310027China

Poly(vinyl alcohol)(PVA)is usually processed and used in a form of aqueous dispersion.A large number of inter-and intramolecular hydrogen bonds make it very difficult to obtain suitable rheological behavior for *** this study,carbon particles with different topological shapes were added into PVA aqueous dispersion to tune the steady and dynamic rheological *** results show that the zero-dimensional particles(carbon black,CB)increase monotonically the zero-shear viscosity of PVA dispersion,while the one-dimensional particles(carbon nanotubes,CNTs)make it first increase,and then decrease and rise again,like an N-shape,and the two-dimensional particles(graphene oxide,GO)can make it first decrease and then increase,exhibiting a *** is believed that the topological shape of the carbon particles brought about these *** zero-dimensional particles mainly act as physical crosslinking points due to their small *** at a certain content,both CNTs and GO can destroy the intermolecular hydrogen bonds between PVA chains because the PVA chains can twine around the slim CNTs and the large planar size of GO prevents the adsorbed PVA from forming hydrogen bond with other *** high hydroxyl value of carbon particle surface could strengthen this *** is expected that the viscosity of polymer dispersion can be regulated by particles with different topological shape and the surface characteristic,so as to widen the operable concentration range during preparing composite functional materials.

关键词： Topological shape Hydrogen bond Rheological behavior PVA aqueous dispersion

Polarization study of P-wave charmonium radiative decay into a light vector meson at e^(+)e^(-) collider experiment

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Chinese Physics C 2025年第1期49卷 19-34页

作者： Yong-qing Chen Peng-Cheng Hong Zhuo Chen Wei shan Wei-Min Song School of Physics and Electronics Hunan Normal UniversityChangsha 410081China College of Physics Jilin UniversityChangchun 130012China

In this paper,a formalism is presented for the helicity amplitude analysis of the decays Ψ(2S)→γ_(1)χ_(c)J,χ_(c)J→γ_(2)V(V=p^(0),φ,ω)(subscripts 1 and 2 are used to distinguish the two radiative photons),and the polarization expressions of the P-wave charmonia χ_(c)J and the vector mesons p^(0),φ,ω for experimental measurements at an electron-positron *** addition,we derive formulae for the angular distributions of χ_(c1,2)→γV to extract the degree of transverse polarization P_(T) of e^(+)e^(-)pairs with symmetric beam energy as well as the ratios of two helicity amplitudes x(in χ_(c1) decays)and x,y(in χ_(c2) decays),which represent the relative magnitudes of transverse to longitudinal polarization *** results are validated by Monte Carlo ***,the statistical sensitivity of P_(T),x,and y are estimated based on the large Ψ(2S)data samples collected at current and proposed future e^(+)e^(-)colliderexperiments.

关键词： P-wave charmonia polarization vector meson angular distribution spin density matrix

基于实测载荷谱下的某电驱动桥桥壳结构强度及寿命分析

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机械强度 2025年第2期47卷 10-18页

作者：姜良兴倪大成姚超黄庆卿鑫慧湖南力行动力科技有限公司株洲412000 湖南大学电气与信息工程学院长沙410082 中车时代电动汽车股份有限公司株洲412000

准确地预估产品的疲劳寿命对于电动汽车关键零部件的结构强度设计以及可靠性设计具有重要作用。以实测强化路道路的载荷谱为出发点,提出了实测载荷谱数据处理与分析的方法,基于Miner准则,得出了车辆在空载、半载以及满载下的载荷数据,... 详细信息

准确地预估产品的疲劳寿命对于电动汽车关键零部件的结构强度设计以及可靠性设计具有重要作用。以实测强化路道路的载荷谱为出发点,提出了实测载荷谱数据处理与分析的方法,基于Miner准则,得出了车辆在空载、半载以及满载下的载荷数据,通过时域频域处理、损伤等效处理等,得到了可供振动仿真分析以及室内台架试验的关键数据;设计开发了一款平行轴式电驱动桥,针对桥壳等关键部件开展了静力学分析和模态分析,得出了桥壳不会因为路面激励而产生扭转和弯曲现象的结论;基于nCode DesignLife仿真分析软件得出了桥壳疲劳寿命与损伤值分布,通过桥壳耐久试验验证了仿真分析的准确性;基于实测的强化路道路载荷谱,在整车振动试验台上开展了15000 km的强化路室内整车振动试验。试验表明,该电驱动桥产品整体寿命及可靠性满足设计要求,同时验证了分析方法的可靠性。

关键词：商用车电驱动桥道路载荷谱疲劳寿命疲劳分析

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基于等价输入干扰方法的再热汽温预测控制

动力工程学报 2025年第2期45卷 275-281页

作者：陈刚华山倪向红杜友武孙立国家能源集团科学技术研究院有限公司低碳智能燃煤发电与超净排放全国重点实验室江苏南京210046 国能南京电力试验研究有限公司江苏南京210046 江苏理工学院电气信息工程学院江苏常州213001 东南大学能源与环境学院大型发电装备安全运行与智能测控国家工程研究中心江苏南京210018

针对再热汽温控制系统存在大惯性、大时滞和易受扰的问题,提出一种基于等价输入干扰(Equivalent Input Disturbance,EID)估计与补偿的预测控制方法,以提高系统控制的精度。构建状态观测器和EID估计器,估计扰动在控制输入端的一个等价量... 详细信息

针对再热汽温控制系统存在大惯性、大时滞和易受扰的问题,提出一种基于等价输入干扰(Equivalent Input Disturbance,EID)估计与补偿的预测控制方法,以提高系统控制的精度。构建状态观测器和EID估计器,估计扰动在控制输入端的一个等价量。由于系统时滞产生相位差,导致无法利用扰动估计值进行实时补偿,根据泰勒级数原理,设计扰动预测器,计算扰动预测值,利用该预测值在输入端对扰动进行反向补偿。基于被控对象模型,提出一种新型状态预测方法,利用预测值设计反馈控制规律。基于分离原理将控制系统分解为扰动抑制和跟踪控制2个子系统,得出系统稳定性条件和参数设计步骤。仿真结果表明:所提方法可获得满意的控制精度和抗干扰性能。

关键词：控制理论再热汽温预测控制等价输入干扰扰动抑制时滞

运粮入关、砥柱之险与定都关中——对封建皇权的一种约束逻辑

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延安大学学报(社会科学版) 2025年第1期47卷 102-109,F0003页

作者：向青山中共南京市委党校政治学与法学教研部江苏南京210046

中国历史上,基于特定的自然条件和生产关系,北方少数民族对中原地区的侵盗长期存在,作为中原王朝政治中心的都城往往面临巨大军事威胁。关中地区因其具有得天独厚的天然坚固屏障,成为历代帝王定都的首选之地。定都后的关中地区,因人口... 详细信息

中国历史上,基于特定的自然条件和生产关系,北方少数民族对中原地区的侵盗长期存在,作为中原王朝政治中心的都城往往面临巨大军事威胁。关中地区因其具有得天独厚的天然坚固屏障,成为历代帝王定都的首选之地。定都后的关中地区,因人口迁移的自然倾向和政策导向,加之关中北部长期驻军的需要,聚集了数百万人口,由此带来了庞大的粮食需求。关中纵有千里沃野,亦难以自给自足,从关东乃至南方漕转粮食给养关中成为必然选择。砥柱之险和崤函之陡使得运粮入关异常艰难且成本高昂,这在很大程度上影响了关中的物资供应和边境的粮草供给,也加重了民众的赋税徭役负担,从而大大增加了政权的不稳定因素。运粮入关、砥柱之险与定都关中,构成了对封建皇权的一种约束逻辑。

关键词：运粮入关砥柱之险定都关中约束皇权权力使命