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Investigation of bubbles escape behavior from low basicity mold flux for high-Mn high-Al steels using 3D X-ray microscope

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 102-110页

作者： Qiang Liu Xiang Li Shen Du Ming Gao Yanbin yin Jiongming Zhang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

During the continuous casting process of high-Mn high-Al steels,various types of gases such as Ar need to escape through the top of the *** which,the behavior of bubbles traversing the liquid slag serves as a restrictive link,closely associated with viscosity and the thickness of liquid *** contrast to two-dimensional surface observation,three-dimensional(3D)analysis method can offer a more intuitive,accurate,and comprehensive ***,this study employs a 3D X-ray microscope(3D-XRM)to obtained spatial distribution and 3D morphological characteristics of residual bubbles in mold flux under different basicity of liquid slag,different temperatures,and different holding *** results indicate that as basicity of slag increases from 0.52 to 1.03,temperature increases from 1423 to 1573 K,the viscosity of slag decreases,the floating rate of bubbles *** addition,when holding time increases from 10 to 30 s,the bubbles floating distance increases,and the volume fraction and average equivalent sphere diameter of the bubbles solidified in the mold flux gradually *** one word,increasing the basicity,temperature,and holding time leading to an increase in the removal rate of bubbles especially for the *** findings of bubbles escape behavior provide valuable insights into optimizing low basicity mold flux for high-Mn high-Al steels.

关键词： mold flux low basicity bubbles three-dimensional X-ray microscope viscosity

Partial channel information feedback mechanism for FFR-based multi-channel systems

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The Journal of China Universities of Posts and Telecommunications 2010年第1期17卷 19-24,43页

作者： XI Wei yin Chang-chuan YUE Guang-xin SUN hong-mei Laboratory of Wirekess Communication Systems and Networks School of Information and Communication Engineering Bijjing University of Posts and Telecommunications Beijing 100876 China Communication Technology Laboratory Intel China Research Canter Beijing 100190 China

This article puts forward a partial channel state information （CSI） feedback scheme for fractional frequency reuse （FFR）-based orthogonal frequency division multiple access （OFDMA） systems. Efficient CSI feedback strategy plays an important role in opportunistic scheduling because base station （BS） can employ adaptive modulation and coding （AMC） technique to adaptively change transmission rates according to CSI feedback, and therefore the spectrum efficiency can be improved significantly. On the other hand, FFR is a simple but effective technique to improve the throughput of users at cell edge. To exploit opportunistic scheduling in FFR-based OFDMA systems, both users and spectrum are divided into multiple groups in this article, and specific feedback pattern is designed for each user group on each spectrum sub-band. Simulations results prove that the proposed algorithm can reduce the feedback load significantly, while maintain nearly the same performance as the system with full feedback.

关键词： CSI feedback FFR multiuser diversity OFDMA opportunistic scheduling

Advances in therapies using mesenchymal stem cells and their exosomes for treatment of peripheral nerve injury:state of the art and future perspectives

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Neural Regeneration Research 2025年第11期20卷 3151-3171页

作者： Fatima Aldali Chunchu Deng Mingbo Nie hong Chen Department of Rehabilitation Medicine Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina Department of Orthopedics Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

“Peripheral nerve injury”refers to damage or trauma affecting nerves outside the brain and spinal *** nerve injury results in movements or sensation impairments,and represents a serious public health *** severed peripheral nerves have been effectively joined and various therapies have been offered,recovery of sensory or motor functions remains limited,and efficacious therapies for complete repair of a nerve injury remain *** emerging field of mesenchymal stem cells and their exosome-based therapies hold promise for enhancing nerve regeneration and *** stem cells,as large living cells responsive to the environment,secrete various factors and *** latter are nano-sized extracellular vesicles containing bioactive molecules such as proteins,microRNA,and messenger RNA derived from parent mesenchymal stem *** have pivotal roles in cell-to-cell communication and nervous tissue function,offering solutions to changes associated with cell-based *** ongoing investigations,mesenchymal stem cells and mesenchymal stem cell-derived exosome-based therapies are in the exploratory stage.A comprehensive review of the latest preclinical experiments and clinical trials is essential for deep understanding of therapeutic strategies and for facilitating clinical *** review initially explores current investigations of mesenchymal stem cells and mesenchymal stem cell-derived exosomes in peripheral nerve injury,exploring the underlying ***,it provides an overview of the current status of mesenchymal stem cell and exosomebased therapies in clinical trials,followed by a comparative analysis of therapies utilizing mesenchymal stem cells and ***,the review addresses the limitations and challenges associated with use of mesenchymal stem cell-derived exosomes,offering potential solutions and guiding future directions.

关键词： clinical trials exosome extracellular vesicles mesenchymal stem cells nerve regeneration peripheral nerve injury pre-clinical experiments

Understanding “software-defined” from an OS perspective: technical challenges and research issues

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Science China(Information Sciences) 2017年第12期60卷 271-273页

作者： hong mei Beijing Institute of Technology Key Laboratory on High-Confidence Software Technologies(MOE) Peking University

What is"software-defined"?Software-defined has become one of the hottest buzzwords in the information technology(IT)*** is used to describe a family of technologies,including software-defined networking(SDN),softwaredefined storage(SDS),and software-defined data centers(SDDC).These are part of a broader trend that is referred to as software-defined everything

关键词： OS from an OS perspective Understanding software-defined technical challenges and research issues

HIV/AIDS抗病毒治疗县乡村三级管理模式实践与探索

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卫生软科学 2008年第5期22卷 409-412页

作者：付美玲梅红英何干桑李继萍杨海芹许元武云南省陇川县人民医院云南陇川678700

介绍陇川县HIV/AIDS抗病毒治疗县乡村三级管理模式和探索实施县乡村三级管理的实用价值。结果表明:HAART(联合高效抗反转录病毒治疗)实行三级管理具有良好的可操作性与临床实用价值,其对促进服药依从性、提高临床治疗效果、降低机会性... 详细信息

介绍陇川县HIV/AIDS抗病毒治疗县乡村三级管理模式和探索实施县乡村三级管理的实用价值。结果表明:HAART(联合高效抗反转录病毒治疗)实行三级管理具有良好的可操作性与临床实用价值,其对促进服药依从性、提高临床治疗效果、降低机会性感染发生率与死亡率具有良好的推动作用。

关键词： HIV/AIDS HAART 县乡村三级管理

肉芽肿性多血管炎与肺结核的鉴别诊断（附一例报告）

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中国防痨杂志 2017年第3期39卷 304-308页

作者：陈禹李桂琴王宇鹏曲波李然高鸿美李茵茵沈阳市第十人民医院沈阳市胸科医院结核科 110044 沈阳市第十人民医院沈阳市胸科医院呼吸科 110044 沈阳市第十人民医院沈阳市胸科医院肿瘤科 110044

肉芽肿性多血管炎（granulomatosis with polyangiitis,GPA）是一种病因未明的罕见多系统自身免疫性疾病.其特征为坏死性肉芽肿性炎和免疫性中小血管炎,大部分患者以呼吸道病变为首发症状,容易误诊为肺结核.笔者报道2015年1月本院收治的... 详细信息

肉芽肿性多血管炎（granulomatosis with polyangiitis,GPA）是一种病因未明的罕见多系统自身免疫性疾病.其特征为坏死性肉芽肿性炎和免疫性中小血管炎,大部分患者以呼吸道病变为首发症状,容易误诊为肺结核.笔者报道2015年1月本院收治的1例以“发热、肺部阴影、单侧胸腔积液”为主要临床表现的患者,诊断为肺结核及结核性胸膜炎,经抗结核治疗无效,为明确诊断,笔者组织临床专家对患者的诊断及治疗进行了讨论.患者经肺活组织检查及检测c-ANCA阳性后,最终诊断为肉芽肿性多血管炎.

关键词：血管炎,变应性肉芽肿性结核,肺诊断,鉴别结果与过程评价(卫生保健) Outcome and process assessment (health care)

Generalized analysis model for fractional frequency reuse

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The Journal of China Universities of Posts and Telecommunications 2010年第5期17卷 1-5页

作者： XI Wei yin Chang-chuan YUE Guang-xin SUN hong-mei Laboratory of Wireless Cornmtmication Systems and Networks Beijing University of Posts and Telecommunications Beijing 100876 China Communication Technology Laboratory Intel China Research Center Beijing 100190 China

Fractional frequency reuse （FFR） is an effective technique to mitigate co-channel interference in orthogonal frequency division multiple access （OFDMA）-based broadband cellular *** this paper,we present a generalized model for FFR under which all existing FFR schemes can be considered as its special ***,quality factor has been proposed to indicate the quality of the *** interesting conclusion can be drawn that,as the power ratio in FFR is adjusted continuously,the corresponding quality factor varies ***,simulation is conducted based on worldwide interoperability for microwave access （WiMAX）,and the result agrees well with our theoretical ***,an effective range for power ratio is presented,which is very instructive to practical system design.

关键词： co-channel interference FFR power ratio

Learning a graph-based classifier for fault localization

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Science China(Information Sciences) 2020年第6期63卷 195-216页

作者： Hao Zhong hong mei Department of Computer Science and Engineering Shanghai Jiao Tong University

Because software emerged, locating software faults has been intensively researched, culminating in various approaches and tools that have been applied in real development. Despite the success of these developments, improved tools are still demanded by programmers. Meanwhile, some programmers are reluctant to use any tools when locating faults in their development. The state-of-the-art situation can be naturally improved by learning how programmers locate faults. The rapid development of open-source software has accumulated many bug fixes. A bug fix is a specific type of comments containing a set of buggy files and their corresponding fixed files, which reveal how programmers repair bugs. Feasibly, an automatic model can learn fault locations from bug fixes, but prior attempts to achieve this vision have been prevented by various technical challenges. For example, most bug fixes are not compilable after checking out, which hinders analyzing bug fixes by most advanced static/dynamic tools. This paper proposes an approach called ClaFa that trains a graph-based fault classifier from bug fixes. ClaFa is built on a recent partial-code tool called Grapa, which enables the analysis of partial programs by the complete code tool called WALA. Once Grapa has built a program dependency graph from a bug fix, ClaFa compares the graph from the buggy code with the graph from the fixed code, locates the buggy nodes, and extracts the various graph features of the buggy and clean nodes. Based on the extraction result, ClaFa trains a classifier that combines Adaboost and decision tree learning. The trained ClaFa can predict whether a node of a program dependency graph is buggy or *** evaluate ClaFa on thousands of buggy files collected from four open-source projects: Aries, Mahout,Derby, and Cassandra. The f-scores of ClaFa achieves are approximately 80% on all projects.

关键词： fault classifier partial code analysis bug fix analysis

Advancements and Challenges in Organic–Inorganic Composite Solid Electrolytes for All‑Solid‑State Lithium Batteries

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Nano-Micro Letters 2025年第1期17卷 46-97页

作者： Xueyan Zhang Shichao Cheng Chuankai Fu Geping yin Liguang Wang Yongmin Wu Hua Huo State Key Laboratory of Space Power‑Sources School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310058People’s Republic of China State Key Laboratory of Space Power-Sources 2965 Dongchuan RoadMinhang DistrictShanghai 200240People’s Republic of China

To address the limitations of contemporary lithium-ion batteries,particularly their low energy density and safety concerns,all-solid-state lithium batteries equipped with solid-state electrolytes have been identified as an up-and-coming *** the various SEs,organic–inorganic composite solid electrolytes(OICSEs)that combine the advantages of both polymer and inorganic materials demonstrate promising potential for large-scale ***,OICSEs still face many challenges in practical applications,such as low ionic conductivity and poor interfacial stability,which severely limit their *** review provides a comprehensive overview of recent research advancements in ***,the influence of inorganic fillers on the main functional parameters of OICSEs,including ionic conductivity,Li+transfer number,mechanical strength,electrochemical stability,electronic conductivity,and thermal stability are systematically *** lithium-ion conduction mechanism of OICSE is thoroughly analyzed and concluded from the microscopic ***,the classic inorganic filler types,including both inert and active fillers,are categorized with special emphasis on the relationship between inorganic filler structure design and the electrochemical performance of ***,the advanced characterization techniques relevant to OICSEs are summarized,and the challenges and perspectives on the future development of OICSEs are also highlighted for constructing superior ASSLBs.

关键词： Composite solid electrolytes Inorganic filler Interfacial stability Li-ion conduction mechanism Characterization techniques