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基于高质量发展的西藏班戈错绿色矿山建设

矿产综合利用 2024年第2期45卷 214-220页

作者：延孟孟段吉琳赵忠陈起宏王钰陈伟东华理工大学地球科学学院江西南昌330013 西南冶金地质测试所四川成都611734 中国地质科学院矿产综合利用研究所四川成都614022

这是一篇矿业工程领域的论文。近年来,绿色矿山实践经验和成功案例层出不穷,国内对于绿色矿山建设的研究热点主要集中于矿山生态修复,而实际上绿色矿山建设绝不仅限于矿山“复绿”,还应综合考虑其经济、社会、环境效益。本文将二十大强... 详细信息

这是一篇矿业工程领域的论文。近年来,绿色矿山实践经验和成功案例层出不穷,国内对于绿色矿山建设的研究热点主要集中于矿山生态修复,而实际上绿色矿山建设绝不仅限于矿山“复绿”,还应综合考虑其经济、社会、环境效益。本文将二十大强调的高质量发展理念引入西藏班戈错绿色矿山建设实例中,把高质量评价标准与以往的绿色矿山评价体系进行融合,为绿色矿山提供新的建设思路,丰富绿色矿业的内涵,为矿业绿色可持续发展、高质量发展提供参考。

关键词：矿业工程绿色矿山高质量发展评价体系班戈错矿山建设

基于分离通道的同步无线能量信息传输系统优化

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电工电能新技术 2024年第7期43卷 70-79页

作者：史海睿张立炎陈启宏李昶武汉理工大学自动化学院湖北武汉430070

针对单通道能量信息并行传输系统信息传输速率较低、能量传输损耗大、系统设计方法复杂等问题,本文在已有研究的基础上,基于互感耦合理论,设计了一种利用新型的多线圈磁耦合机构实现能量传输系统和信息传输系统分离设计的新方案。多线... 详细信息

针对单通道能量信息并行传输系统信息传输速率较低、能量传输损耗大、系统设计方法复杂等问题,本文在已有研究的基础上,基于互感耦合理论,设计了一种利用新型的多线圈磁耦合机构实现能量传输系统和信息传输系统分离设计的新方案。多线圈磁耦合机构作为电能和信息传输的通道,可以传输不同频率、不同幅值的电能和信号。数字信息经幅移键控调制后加载到信息传输回路中,在不影响能量传输的前提下,实现信息的实时、双向、高速率传输。通过有限元分析软件对所设计的磁耦合机构进行磁场特性分析,利用仿真软件分析能量传输系统的关键电气参数变化,以及电能传输对信息传输的干扰,确定所提方案的可行性,最后搭建实验平台验证所提方案的正确性。在能量传输频率100 kHz、正向信息载波频率13􀆰81 MHz、反向信息载波频率19􀆰23 MHz的情况下,实现了能量传输效率89􀆰35%、正向信息传输速率428􀆰9 kbps、反向信息传输速率599􀆰9 kbps的能量信息并行双向传输。

关键词：无线电能传输能量信息并行传输磁心结构磁耦合机构

间充质干细胞微泡对ARDS肺纤维化影响的实验研究

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中华临床医师杂志（电子版） 2024年第1期18卷 72-78页

作者：王吉张颖顾雪杨朋磊陈齐红扬州大学医学院江苏扬州225200 扬州大学附属江都人民医院重症医学科江苏扬州225200

目的明确间充质干细胞微泡(MSC-MVs)对急性呼吸窘迫综合征(ARDS)肺纤维化小鼠肺纤维化的影响。方法采用慢病毒转染技术获取肝细胞生长因子(HGF)低表达的MSC-MVs(siHGF-MSC-MVs);三次注射脂多糖(LPS)法建立ARDS肺纤维化小鼠模型,然后从A... 详细信息

目的明确间充质干细胞微泡(MSC-MVs)对急性呼吸窘迫综合征(ARDS)肺纤维化小鼠肺纤维化的影响。方法采用慢病毒转染技术获取肝细胞生长因子(HGF)低表达的MSC-MVs(siHGF-MSC-MVs);三次注射脂多糖(LPS)法建立ARDS肺纤维化小鼠模型,然后从ARDS肺纤维化小鼠尾静脉注入MSC-MVs或siHGF-MSC-MVs。使用免疫组织化学、western blot、ELISA等方法检测肺纤维化相关蛋白表达,比较MSC-MVs对ARDS肺纤维化小鼠肺纤维化及纤维化相关指标的影响。结果ARDS肺纤维化组肺纤维化评分明显高于对照组,MSC-MVs注入肺纤维化小鼠尾静脉后,肺纤维化评分明显降低,然而siHGF-MSC-MVs组肺纤维化评分明显高于MSC-MVs组。与肺纤维化组比较,MSC-MVs组Ⅰ型、Ⅲ型胶原蛋白抗原、TGF-β、α-SMA蛋白表达量明显降低,而siHGF-MSC-MVs组较MSC-MVs组显著增加。ARDS肺纤维化组肺湿/干和Evans蓝漏出量高于对照组,MSC-MVs注射后湿/干和Evans蓝漏出量明显降低,然而,HGF低表达后MSC-MVs的作用被明显抑制。结论MSC-MVs部分通过分泌HGF抑制ARDS肺纤维化小鼠肺纤维化。

关键词：间充质干细胞微泡急性呼吸窘迫综合征肺纤维化肝细胞生长因子

Hypoglycemic mechanism of Tegillarca granosa polysaccharides on type 2 diabetic mice by altering gut microbiota and regulating the PI3K-akt signaling pathwaye

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Food Science and Human Wellness 2024年第2期13卷 842-855页

作者： qihong Jiang Lin chen Rui Wang Yin chen Shanggui Deng Guoxin Shen Shulai Liu Xingwei Xiang College of Food Science and Technology Zhejiang University of TechnologyHangzhou 310014China Key Laboratory of Marine Fishery Resources Exploitment&Utilization of Zhejiang Province Hangzhou 310014China National R&D Branch Center for Pelagic Aquatic Products Processing(Hangzhou) Hangzhou 310014China Institute of Sericultural and Tea Zhejiang Academy of Agricultural SciencesHangzhou 310021China College of Food and Pharmacy Zhejiang Ocean UniversityZhoushan 316000China

Type 2 diabetes mellitus(T2DM)is a complex metabolic disease threatening human *** investigated the effects of Tegillarca granosa polysaccharide(TGP)and determined its potential mechanisms in a mouse model of T2DM established through a high-fat diet and ***(5.1×10^(3) Da)was composed of mannose,glucosamine,rhamnose,glucuronic acid,galactosamine,glucose,galactose,xylose,and *** could significantly alleviate weight loss,reduce fasting blood glucose levels,reverse dyslipidemia,reduce liver damage from oxidative stress,and improve insulin ***-PCR and Western blotting indicated that TGP could activate the phosphatidylinositol-3-kinase/protein kinase B signaling pathway to regulate disorders in glucolipid metabolism and improve insulin *** increased the abundance of Allobaculum,Akkermansia,and Bifidobacterium,restored the microbiota abundance in the intestinal tracts of mice with T2DM,and promoted short-chain fatty acid *** study provides new insights into the antidiabetic effects of TGP and highlights its potential as a natural hypoglycemic nutraceutical.

关键词： Tegillarca granosa polysaccharide Type 2 diabetes mellitus Glycolipid metabolism PI3K/Akt signaling pathway

Chemical short-range-order induced multiscale strengthening in refractory medium entropy alloys

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Acta Mechanica Sinica 2024年第6期40卷 41-49页

作者： Weizheng Lu Yang chen Jia Li Peter K.Liaw qihong Fang State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha410082China Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN37996USA

High/medium entropy alloys(H/MEAs)are generally possible to exhibit chemical short-range order(SRO).However,the complex role of SRO on mechanical properties from nano-scale to meso-scale is still challenging so ***,we study the strengthening mechanism and deformation behavior in a model body-centered-cubic HfNbTa MEA by using atomic-scale molecular dynamics,micro-scale dislocation dynamics,and meso-scale crystal plasticity finite *** SRO inhibits dislocation nucleation at the atomic scale,improving the flow *** SRO-induced ultrastrong local stress fluctuation greatly improves the micro-scale dislocation-based strength by the significant dislocation forest ***,the Ta-rich locally ordered structure leads to an obvious heterogeneous strain and stress partitioning,which forms a strong strain gradient in the adjacent grain interiors and contributes to the strong back-stress-induced strain hardening.

关键词： High/medium entropy alloys Multiscale strengthening Chemical short-range order

Phase diagrams on composition-spread Fe_(y)Te_(1-x)Se_(x) films

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Science Bulletin 2022年第14期67卷 1443-1449,M0004页

作者： Zefeng Lin Sijia Tu Juan Xu Yujun Shi Beiyi Zhu Chao Dong Jie Yuan Xiaoli Dong qihong chen Yangmu Li Kui Jin Zhongxian Zhao Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China

Fe_(y)Te_(1-x)Se_(x),an archetypical iron-based high-temperature superconductor with a simple structure but rich physical properties,has attracted lots of attention because the two end compositions,Se content x=0 and 1,exhibit antiferromagnetism and nematicity,respectively,making it an ideal candidate for studying their interactions with ***,what is clearly lacking to date is a complete phase diagram of Fe_(y)Te_(1-x)Se_(x)as functions of its chemical compositions since phase separation usually occurs from x~0.6 to 0.9 in bulk ***,fine control of its composition is experimentally challenging because both Te and Se are volatile *** we establish a complete phase diagram of Fe_(y)Te_(1-x)Se_(x),achieved by high-throughput film synthesis and characterization *** advanced combinatorial synthesis process enables us to fabricate an epitaxial composition-spread Fe_(y)Te_(1-x)Se_(x)film encompassing the entire Se content x from 0 to 1 on a single piece of *** micro-region composition analysis and X-ray diffraction show a successful continuous tuning of chemical compositions and lattice parameters,*** micro-scale pattern technique allows the mapping of electrical transport properties as a function of relative Se content with an unprecedented resolution *** with the spin patterns in literature,we build a detailed phase diagram that can unify the electronic and magnetic properties of Fe_(y)Te_(1-x)Se_(x).Our composition-spread Fe_(y)Te_(1-x)Se_(x) films,overcoming the challenges of phase separation and precise control of chemical compositions,provide an ideal platform for studying the relationship between superconductivity and magnetism.

关键词： Fe_(y)Te_(1-x)Se_(x) High-throughput Composition-spread film Superconductivity Phase diagram

基于动态博弈的武器装备体系发展规划论证方法

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系统工程与电子技术 2022年第10期44卷 3124-3133页

作者：陈启宏赵青松邱薇陈甲国防科技大学系统工程学院湖南长沙410073 中国人民解放军96901部队北京100094 广东省军区综合训练队广东广州510501

武器装备是作战能力生成的重要物质基础,针对现代战争武器装备成体系对抗的特征,从对抗博弈的视角分析武器装备体系发展规划问题。首先,基于作战环构建武器装备体系对抗网络模型,描述不同功能类型装备之间的影响关系。基于动态博弈的思... 详细信息

武器装备是作战能力生成的重要物质基础,针对现代战争武器装备成体系对抗的特征,从对抗博弈的视角分析武器装备体系发展规划问题。首先,基于作战环构建武器装备体系对抗网络模型,描述不同功能类型装备之间的影响关系。基于动态博弈的思想,构建武器装备体系发展规划的博弈脉络,评估发展规划方案在不同博弈场景下的威胁能力。最后进行了示例分析,为武器装备体系发展规划论证提供一种新的定量评估方法。

关键词：武器装备体系发展规划动态博弈

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Surface morphology and electronic structure in stoichiometric superconductor CaKFe_(4)As_(4) robed by scanning tunneling microscopy/spectroscopy

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Science China(Physics,Mechanics & Astronomy) 2021年第12期64卷 144-150页

作者： Xiaodong Yu Zhongxu Wei Zhanyi Zhao Tao Xie Chang Liu Ge He qihong chen Lei Shan Huiqian Luo Qing Huan Jie Yuan Kui Jin Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Walther Meissner Institute Bayerische Akademie der WissenschaftenGarching 85748Germany Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Songshan Lake Materials Laboratory Dongguan 523808China

CaKFe_(4)As_(4) is a new-type superconductor with a relatively high transition temperature of 35 K among stoichiometric iron-based superconductors. Based on scanning tunneling microscopy/spectroscopy, the surface morphology and electronic structure of CaKFe_(4)As_(4) single crystal were systematically investigated. The cleaved CaKFe_(4)As_(4) showed various morphologies, such as atomically resolved 1×1, 1×2, and √2×√2 lattices. By analyzing the geometrical correlations of these morphologies, the 1×1 and 1×2 lattices were identified as the original and reconstructed As layers, respectively, whereas the √2×√2 lattice was distinguished as the reconstructed alkaline-earth-metal or alkali-metal layer. The superconducting energy gap of 7.3 me V and bosonic mode of 12.7 me V were resolved in the scanning tunneling spectra. In addition, the superconducting energy gaps measured on different terminations were identical and consistent with the values obtained by bulk-sensitive techniques, indicating that the electronic structures of CaKFe_(4)As_(4) were insensitive to the surface reconstructions. Our study clarifies the relationships between complex surface reconstructions and surface terminations and preliminarily presents that there is no obvious effect of surface reconstructions on electronic states.

关键词： CaKFe_(4)As_(4) scanning tunneling microscopy surface reconstructions superconductivity

Optimal Control of Semilinear Elliptic Variational Bilateral Problem

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Acta Mathematica Sinica,English Series 2000年第1期16卷 123-140页

作者： qihong chen Institute of Mathematics,Fudan University,Shanghai 200433,P.R.China Shanghai Normal University,Shanghai 200023,P.R.China Institute of Mathematics Fudan University Shanghai 200433 P.R. China Shanghai Normal University Shanghai 200023 P.R. China

This paper is concerned with an optimal control problem for semilinear elliptic variational inequalities associated with bilateral *** and optimality conditions of the optimal pair are established.

关键词： Elliptic bilateral variational inequality Optimal control Existence Optimality condition