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China Foundry 2023年第1期20卷 63-70页

作者： ming Xu Yan-guo Yin cong-min li cong-chong Duan College of Mechanical Engineering Hefei University of TechnologyHefei 230002China Anhui Yihui New Materials Co. Ltd.Hefei 230000China

A comprehensive study on Sn macrosegregation behavior in ternary Al-Sn-Cu alloys was carried out by comparative analysis between gravity casting and squeeze casting *** microstructure and Sn distribution of the castings were characterized by metallography,scanning electron microscopy(SEM),energy-dispersive X-ray(EDX)spectroscopy,and a direct reading *** show that there are obvious differences in Sn morphology between gravity casting and squeeze casting *** squeeze casting condition,the grain size of the casting is smaller and the distribution ofβ(Sn)is *** effectively reduces the segregation of triangular grain boundary as well as the segregation of *** segregation types of Sn in gravity casting and squeeze casting samples are obviously *** upper surfaces of gravity casting samples show severe negative segregation,while all the lower surfaces have positive *** with gravity casting,squeeze casting solidifies under isostatic *** to the direct contact between the upper surface of the casting and the mold,the casting solidifies faster under higher undercooling degree and ***,the uniform distribution of Sn reduces the segregation phenomenon on the surface of the casting.

关键词： ternary Al-Sn-Cu alloy squeeze casting macrosegregation mechanism

Effects of macrosegregation on mechanical and tribological properties of squeeze casting immiscible bearing alloys

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China Foundry 2023年第5期20卷 443-451页

作者： ming Xu Yan-guo Yin cong-min li Guo-tao Zhang cong-chong Duan Institute of Tribology School of Mechanical EngineeringHefei University of TechnologyHefei 230002China School of Mechanical Engineering Anhui University of TechnologyMaanshan 243002AnhuiChina Anhui Yihui New Material Co. Ltd.Hefei 230000China

The macrosegregation behaviors of Al-Sn-Cu ternary immiscible alloy castings and their effects on mechanical and tribological properties were *** results demonstrate that Sn and Cu segregate in the casting simultaneously,and the mass fraction of the two elements has a"U"shaped ***,positive and negative segregation occur in the casting,with positive segregation appearing on the top and lower surfaces and negative segregation on the remaining surfaces,with the 1/2 surface(hot node location)having the highest degree of negative ***,the results of Vickers hardness,tensile strength,and elongation show that Sn and Cu cooperatively affect the mechanical properties of *** higher the mass fraction of Sn and Cu elements,the higher the hardness,the greater the tensile strength,and the better the *** findings of the step-by-step loading tests demonstrate that the segregation of Sn and Cu significantly impacts the tribological characteristics of the *** higher the mass fraction of Sn and Cu on the sample surface,the better the tribological characteristics.

关键词： squeeze casting Al-Sn-Cu macrosegregation mechanical properties tribological property

Graded lie Algebra Generating of Parastatistical Algebraic Relations

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Communications in Theoretical Physics 2001年第12期36卷 647-650页

作者： JING Si-cong YANG Wei-min li Ping Department of Modern Physics University of Science and Technology of China Hefei 230026 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China

A new kind of graded lie algebra (We call it Z2,2 graded lie algebra) is introduced as a framework for formulating parasupersymmetric theories. By choosing suitable Bose subspace of the Z2,2 graded lie algebra and usi... 详细信息

关键词： graded lie algebra, parastatistics, supersymmetry

内蒙古阿尔山地区新生代玄武岩及其幔源包体微量元素组成特征

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矿物岩石 2006年第1期26卷 29-34页

作者：于福生丛立民中国石油大学石油天然气成藏机理教育部重点实验室北京102249 内蒙古自治区115地质队内蒙古乌兰浩特137400

内蒙古阿尔山地区新生代火山活动频繁，喷发期次可划分为上新世、更新世、全新世，最新喷发时间约为1900aBP，具有再次喷发的可能。为了探讨活火山源区地幔流体的分布特征，利用中子活化分析和同步辐射X射线荧光微探针分析技术，对阿尔... 详细信息

内蒙古阿尔山地区新生代火山活动频繁，喷发期次可划分为上新世、更新世、全新世，最新喷发时间约为1900aBP，具有再次喷发的可能。为了探讨活火山源区地幔流体的分布特征，利用中子活化分析和同步辐射X射线荧光微探针分析技术，对阿尔山地区全新世玄武岩及其幔源包体的稀土、微量元素组成特征、地幔包体矿物及其熔融包裹体的微量元素组成特征进行了分析。中子活化分析结果表明，不同产地玄武岩具有相同的稀土配分模式，其中，∑8REE=96．93～114．94，Eu／Sm=0．32～0．37，（La／Lu）N=8.89～12.52；不相客元素蛛网曲线整体右倾，Ba，Ta，Sm具正异常，Th，Zr具负异常，没有明显的Sr异常，说明岩浆上升过程中很少演化和分离结晶；不同产地地幔岩包体中不含包裹体的同类矿物的REE组成相近，反映了不同活火山的地幔源区REE组成特征相同；不同产地地幔岩包体同类矿物及其内部包裹体同步辐射X射线荧光微探针分析表明具有相同的微量元素曲线分布形态；这些特征说明阿尔山活火山群分布区地幔流体不存在显著的不均一性。

关键词：地幔包体微量元素中子活化分析同步辐射阿尔山玄武岩

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论强化军民融合发展战略的宪法基础

法学杂志 2017年第5期38卷 1-9页

作者：丛文胜李敏中国政法大学法学院北京100088

军民融合发展作为一项国家战略,是实现富国强军的必然选择,也是我国宪法规范的重要内容。从世界范围看,军民融合发展模式的确立与管理体制机制的建立无不体现各国宪法的规范作用。为推进我国军民融合发展战略的深入发展,必须加快完善我... 详细信息

军民融合发展作为一项国家战略,是实现富国强军的必然选择,也是我国宪法规范的重要内容。从世界范围看,军民融合发展模式的确立与管理体制机制的建立无不体现各国宪法的规范作用。为推进我国军民融合发展战略的深入发展,必须加快完善我国宪法规范,积极推动包括国防和军事领导体制在内的国家各项重大制度改革,强化宪法对军民融合发展战略的规范与指导。在宪法层面应明确各级国家相应机构的职权,建立统一、权威、高效的国家军民融合管理体制,形成稳定权威的军民融合领导机构和组织协调机制,为全面实施军民融合发展战略提供坚实的宪法法律保障。

关键词：军民融合战略宪法基础

Long-read sequencing reveals novel genetic polymorphisms in the major histocompatibility complex region and their impacts on the Han Chinese population

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Science China life Sciences 2025年

作者： cong Zhou Tingting Gong Shuhang li li Jin Shaohua Fan State Key Laboratory of Genetic Engineering Lab for Evolutionary Synthesis School of Life Sciences Human Phenome Institute Fudan University Research Unit of Dissecting the Population Genetics and Developing New Technologies for Treatment and Prevention of Skin Phenotypes and Dermatological Diseases (2019RU058) Chinese Academy of Medical Sciences

Human leukocyte antigen(HLA) genes in the major histocompatibility complex(MHC) region are crucial for immunity and are associated with numerous diseases and phenotypes. The MHC region's complexity and high genetic diversity make it challenging to analyze using short-read sequencing(SRS) technology. We sequence the MHC region of 100 Han Chinese individuals using both long-read sequencing(LRS) and SRS platforms at approximately 30X coverage to study genetic alterations and their potential functional impacts. LRS provides significantly greater coverage of the MHC region and eight classical HLA genes, particularly at the HLA-DRB1 locus, compared with SRS. We detect 78,249 single nucleotide polymorphisms(SNPs) using LRS, with 26.0% undetectable by SRS. Based on SNP and inferred HLA allele types, we construct an LRS-based MHC reference panel for the Han Chinese, containing approximately 2.6 times more genetic variants than the SRS-based Han-MHC reference panel. A phenome-wide association study assessing 26,024 phenotypes across 15 categories identifies significant associations for 7,879 independent variants(including 809 LRS-specific SNPs) with 409 phenotypes in nine categories. This analysis reveals 24 unreported HLA allele associations in the bioelectric and cellular categories. The conditional analysis identifies 530independent signals across the 409 phenotypes, including 28 previously unreported signals of eight classical HLA genes associated with 33phenotypes. Of the top-associated SNPs, 191 are detected by LRS only. Fine-mapping identifies 126 independent candidate causal SNPs for three immune-related cellular phenotypes, with 17 detected exclusively by LRS. Our study reveals previously unreported variants and their functional impacts in the MHC region, enhancing our understanding of genetic diversity and its potential biological implications in the Han Chinese population.

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Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑life lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-min Qin Zhongliang li Wen‑Xia Su Jia‑min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑Peng Cai Kang li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous li deposition and highly reversible li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous li+flux lithium metal battery

High-temperature oxidation behavior and degradation mechanism of chromium-coated zirconium alloy cladding: a review

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Tungsten 2025年第1期7卷 50-70页

作者： Yi li Bei-Qi Wang Xin-Yin Zhang Shi-Jie Wang cong-Yi li Hui-Long Yang Ran-Ran Su Tong liu School of Mechanical Engineering Shanghai Jiao Tong University College and Graduate School of Arts and Sciences University of Virginia Global Institute of Future Technology Shanghai Jiao Tong University

Accident-tolerant fuels(ATF) have been extensively studied to reduce the production rate and total amount of heat and hydrogen generated from high-temperature steam oxidation during severe ***-coated zirconium alloy cladding has become one of the most promising candidates for ATF because of its excellent corrosion and oxidation *** paper provides a comprehensive overview of the research progress on oxidation behaviors and degradation mechanisms in chromium-coated zirconium alloy cladding under high-temperature *** techniques to strengthen the oxidation resistance are highlighted and ***,challenges and opportunities for various future directions are addressed.

关键词： Accident-tolerant fuel Chromium coating Degradation mechanism High-temperature oxidation behavior Zirconium alloy cladding

Overview of in-situ oxygen production technologies for lunar resources

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International Journal of minerals,Metallurgy and Materials 2025年第2期32卷 233-255页

作者： Youpeng Xu Sheng Pang liangwei cong Guoyu Qian Dong Wang Laishi li Yusheng Wu Zhi Wang College of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China CAS Key Laboratory of Green Process and Engineering National Engineering Research Center for Green Recycling of Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial ***,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic *** oxygen and metal extraction can be achieved using existing metallurgical ***,the ample reserves of water ice on the Moon offer another means for oxygen *** paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental *** delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar *** two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the *** the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the *** review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.

关键词： lunar resources in-situ oxygen production space metallurgy molten lunar regolith electrolysis

Peripheral mitochondrial DNA as a neuroinflammatory biomarker for major depressive disorder

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Neural Regeneration Research 2025年第6期20卷 1541-1554页

作者： Jinmei Ye cong Duan Jiaxin Han Jinrong Chen Ning Sun Yuan li Tifei Yuan Daihui Peng Division of Mood Disorder Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry First Hospital of Shanxi Medical UniversityTaiyuanShanxi ProvinceChina Shanghai Key Laboratory of Psychotic Disorders Brain Health InstituteNational Center for Mental DisordersShanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Co-Innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina

In the pathogenesis of major depressive disorder, chronic stress-related neuroinflammation hinders favorable prognosis and antidepressant response. Mitochondrial DNA may be an inflammatory trigger, after its release from stress-induced dysfunctional central nervous system mitochondria into peripheral circulation. This evidence supports the potential use of peripheral mitochondrial DNA as a neuroinflammatory biomarker for the diagnosis and treatment of major depressive disorder. Herein, we critically review the neuroinflammation theory in major depressive disorder, providing compelling evidence that mitochondrial DNA release acts as a critical biological substrate, and that it constitutes the neuroinflammatory disease pathway. After its release, mitochondrial DNA can be carried in the exosomes and transported to extracellular spaces in the central nervous system and peripheral circulation. Detectable exosomes render encaged mitochondrial DNA relatively stable. This mitochondrial DNA in peripheral circulation can thus be directly detected in clinical practice. These characteristics illustrate the potential for mitochondrial DNA to serve as an innovative clinical biomarker and molecular treatment target for major depressive disorder. This review also highlights the future potential value of clinical applications combining mitochondrial DNA with a panel of other biomarkers, to improve diagnostic precision in major depressive disorder.

关键词： biomarker cytokine exosomes inflammasome major depressive disorder microglia mitochondrial DNA mitochondrial dysfunction neuroinflammation Toll-like receptor