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Knowledge mapping analysis of the track and hotspot of water lubrication:A scientometrics review

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Friction 2023年第9期11卷 1557-1591页

作者： runzhou xu Defa WU Zhenyao WANG Yipan DENG Qian CHENG Hao PANG Wenshu WEI Yinshui LIU State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Beijing Tianma Intelligent Control Technology Co. Ltd.Beijing 101300China

With the enhancement of environmental protection awareness of the international community and the continuous promotion of green and sustainable development of manufacturing industry,water lubrication instead of mineral oil has become the future development trend due to its green,pollution-free,clean,safe,and sustainable advantages especially in ships,marine,coal mining,and other *** recent years,with the rapid development of water lubrication research,significant progress has been made in related research knowledge domain and discipline.A systematic and extensive assessment of water lubrication research has become increasingly *** objective of this research is to reveal the research status,research hotspots,and development trends in the field of water ***,CiteSpace was used to conduct a systematic bibliometric and scientometrical analysis of 1,792 publications from Web of Science core collection database(1997–2021).The results show that China and USA are the most productive countries in the field of water lubrication and have made outstanding *** the analysis of hot key words and co-citation references,this paper reviews the research status of water lubrication in three aspects:(1)lubricating medium modification;(2)material preparation;(3)surface *** has become a research hotspot to promote the superlubricity contact interface and the application of *** results of this study can make a significant contribution to the development of water lubrication by providing a comprehensive understanding of the research status and research hotspots in this *** understanding and discussion of research hotspots and research status are expected to provide insights into future research *** addition,this study will provide valuable references and guidelines for researchers who are interested in this field.

关键词： water lubrication friction scientometrics CiteSpace

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铌合金及其蜂窝钎焊界面组织与力学性能分析

材料导报 2024年第S01期38卷 386-391页

作者：邓云华陶军续润州孙刚中国航空制造技术研究院航空焊接与连接技术航空科技重点实验室北京100024 中国航空制造技术研究院高能束流加工技术重点实验室北京100024

采用Ti基、Ni基和Nb基三种钎料进行了铌合金板板真空钎焊和铌合金蜂窝真空钎焊试验。采用光学显微镜、扫描电镜分析了铌合金板板钎焊界面和蜂窝钎焊界面组织特征,采用能谱仪分析了钎焊界面物相成分,采用EBSD方法分析了钎焊界面物相分布... 详细信息

采用Ti基、Ni基和Nb基三种钎料进行了铌合金板板真空钎焊和铌合金蜂窝真空钎焊试验。采用光学显微镜、扫描电镜分析了铌合金板板钎焊界面和蜂窝钎焊界面组织特征,采用能谱仪分析了钎焊界面物相成分,采用EBSD方法分析了钎焊界面物相分布,并对铌合金板板钎焊复合板和蜂窝钎焊结构的力学性能进行了测试。结果表明:铌合金板板钎焊时,Ti基钎料钎焊界面由固溶体Nb和(Ti,Zr)-(Ni,Cu)化合物组成,Nb基钎料钎焊界面由Co-Nb化合物、Nb的固溶体和Co-Ti化合物组成,而Ni基钎料钎焊时,钎料与铌合金母材扩散反应较弱,钎焊界面主要为凝固钎料,且Ni与Nb的高温线膨胀系数差异较大,钎焊界面存在因热应力带来的微裂纹问题;铌合金蜂窝钎焊时,Ti基钎料在铌合金蜂窝箔材表面润湿铺展性能较差导致钎焊界面钎角欠佳及钎焊界面焊合质量较差;Ni基钎料钎焊时,随着钎焊保温时间的延长,存在钎焊界面溶蚀问题导致钎焊界面焊合质量下降。在保温时间30 min时,Ni基钎料和Nb基钎料钎焊后的铌合金蜂窝界面焊合质量较好;Ni基钎料钎焊蜂窝因界面存在微裂纹,导致钎焊界面强度下降,Nb基钎料钎焊蜂窝力学性能最佳,蜂窝拉脱强度达到7.96 MPa。

关键词：铌合金蜂窝结构真空钎焊界面组织力学性能

钛合金蜂窝壁板楔形件静强度测试及失效模式分析

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材料导报 2021年第S01期35卷 367-370页

作者：姚刚刘衍腾邓云华续润洲赵伟成都飞机工业(集团)有限责任公司成都610000 成都飞机设计研究所成都610000 中国航空制造技术研究院北京100024 西北工业大学航天学院西安710000

钛合金蜂窝壁板结构具有质量轻、比强度和比刚度高、消音、隔热、减振以及抗冲击等优异性能,在航空航天等领域广泛使用。本工作针对全高度钛合金蜂窝结构典型楔形件,开展了静强度和失效模式研究,并分析了两种典型缺陷对全高度钛合金蜂... 详细信息

钛合金蜂窝壁板结构具有质量轻、比强度和比刚度高、消音、隔热、减振以及抗冲击等优异性能,在航空航天等领域广泛使用。本工作针对全高度钛合金蜂窝结构典型楔形件,开展了静强度和失效模式研究,并分析了两种典型缺陷对全高度钛合金蜂窝结构的承载能力及失效模式的影响。结果表明:(1)在67%设计载荷(限制载荷)作用下,无缺陷、含单处缺陷和含两处缺陷的L向和W向钛合金蜂窝楔形试验件均未发生破坏,钛合金蜂窝结构承载能力较强。(2)等效面积Φ45 mm的单处缺陷对钛合金蜂窝楔形试验件静强度和破坏模式影响较小。(3)等效面积Φ30 mm的两处缺陷对钛合金蜂窝楔形试验件静强度影响显著,承载载荷下降明显,易发生板芯界面分离破坏。(4)L向无缺陷、含单处缺陷和含两处缺陷钛合金蜂窝楔形试验件的静强度破坏载荷均大于W向钛合金蜂窝楔形试验件对应结果,建议实际构件时采用蜂窝方向为L向的钛合金蜂窝结构形式。

关键词：钛合金蜂窝壁板结构钎焊界面缺陷力学性能

C/C复材与高温合金异种材料蜂窝结构钎焊界面组织及力学性能

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航空制造技术 2023年第18期66卷 86-90,97页

作者：续润洲岳喜山邓云华任金伟朱小龙中国航空制造技术研究院北京100024 西安航空制动科技有限公司西安713106

在钎焊温度为1040℃,保温时间为15 min的条件下,采用BNi-2钎料钎焊连接C/C复合材料面板和GH3536高温合金异种材料蜂窝结构,研究了不同钎料层厚度对板–芯界面微观组织变化和板–芯拉脱性能影响。结果表明,焊后板–芯接头由钎料与C/C母... 详细信息

在钎焊温度为1040℃,保温时间为15 min的条件下,采用BNi-2钎料钎焊连接C/C复合材料面板和GH3536高温合金异种材料蜂窝结构,研究了不同钎料层厚度对板–芯界面微观组织变化和板–芯拉脱性能影响。结果表明,焊后板–芯接头由钎料与C/C母材反应区、钎料与蜂窝反应区和钎料凝固区3个区域组成,钎料与C/C母材反应生成了Cr_(3)C_(2)反应层,钎料与蜂窝反应区内生成了Si的金属间化合物和Cr_(3)C_(2)颗粒。随着钎料厚度的增加,接头拉脱性能先升高后降低,当钎料厚度为0.12 mm时,板–芯接头拉脱强度达到最高9.69 MPa,断裂位置主要发生在C/C基体内。

关键词： C/C复合材料面板高温合金蜂窝钎焊界面组织拉脱性能

Advanced Functional Electromagnetic Shielding Materials:A Review Based on Micro‑Nano Structure Interface Control of Biomass Cell Walls

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Nano-Micro Letters 2025年第1期17卷 98-134页

作者： Yang Shi Mingjun Wu Shengbo Ge Jianzhang Li Anoud Saud Alshammari Jing Luo Mohammed A.Amin Hua Qiu Jinxuan Jiang Yazeed M.Asiri runzhou Huang Hua Hou Zeinhom M.El‑Bahy Zhanhu Guo Chong Jia Kaimeng xu Xiangmeng Chen Co‑Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037People’s Republic of China State Key Laboratory of Efficient Production of Forest Resourced Beijing Forestry UniversityQinghua East Road 35Haidian DistrictBeijing 100083People’s Republic of China Department of Physics Faculty of Sciences‑ArarNorthern Border UniversityArar 91431Saudi Arabia Department of Chemistry College of ScienceTaif UniversityP.O.Box 1109921944 TaifSaudi Arabia Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China Integrated Composites Lab Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle Upon Tyne NE18STUK College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024People’s Republic of China Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr CityCairo 11884Egypt Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products International Joint Research Center for Biomass MaterialsSouthwest Forestry UniversityKunming 650224People’s Republic of China School of Science Henan Agricultural UniversityZhengzhou 450002People’s Republic of China

Research efforts on electromagnetic interference(EMI)shielding materials have begun to converge on green and sustainable biomass *** materials offer numerous advantages such as being lightweight,porous,and *** to their porous nature,interfacial compatibility,and electrical conductivity,biomass materials hold significant potential as EMI shielding *** concerted efforts on the EMI shielding of biomass materials have been reported,this research area is still relatively new compared to traditional EMI shielding *** particular,a more comprehensive study and summary of the factors influencing biomass EMI shielding materials including the pore structure adjustment,preparation process,and micro-control would be *** preparation methods and characteristics of wood,bamboo,cellulose and lignin in EMI shielding field are critically discussed in this paper,and similar biomass EMI materials are summarized and *** composite methods and fillers of various biomass materials were *** paper also highlights the mechanism of EMI shielding as well as existing prospects and challenges for development trends in this field.

关键词： Biomass materials Electromagnetic interference shielding Micro-nano structure interface control Conductivity

The PtoTCP20-miR396d-PtoGRF15 module regulates secondary vascular development in Populus

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Plant Communications 2023年第2期4卷 286-301页

作者： Lingyan Wang Jie Hou Huimin xu Yufei Zhang runzhou Huang Donghui Wang Xin-Qiang He State Key Laboratory of Protein and Plant Gene Research School of Life SciencesPeking UniversityBeijing 100871China College of Biological Sciences China Agricultural UniversityBeijing 100193China

Secondary vascular development is a key biological characteristic of woody plants and the basis of wood *** understanding of gene expression regulation and dynamic changes in microRNAs(miRNAs)during secondary vascular development is still *** we present an integrated analysis of the miRNA and mRNA transcriptome of six phase-specific tissues-the shoot apex,procambium,primary vascular tissue,cambium,secondary phloem,and secondary xylem-in Populus *** novel regulatory modules,including the PtoTCP20-miR396d-PtoGRF15 module,were identified during secondary vascular development in Populus.A series of biochemical and molecular experiments confirmed that PtoTCP20 activated transcription of the miR396d precursor gene and that miR396d targeted PtoGRF15 to downregulate its *** overexpressing miR396d(35S:miR396d)showed enhanced secondary growth and increased xylem ***,during the transition from primary to secondary vascular development,plants with downregulated PtoTCP20expression(PtoTCP20-SRDX),downregulated miR396 expression(35S:STTM396),and PtoGRF15 overexpression(35S:PtoGRF15)showed delayed secondary *** regulatory modules were identified by integrated analysis of the miRNA and mRNA transcriptome,and the regulatory role of the PtoTCP20-miR396d-PtoGRF15 signaling cascade in secondary vascular development was validated in Populus,providing information to support improvements in forest cultivation and wood properties.

关键词： TCP20 GRF15 miR396d secondary vascular development Populus tomentosa

Carbon Nanofibrous Sponge Made from Hydrothermally Generated Biochar and Electrospun Polymer Nanofibers

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Advanced Fiber Materials 2020年第2期2卷 74-84页

作者： Tao xu Xianfu Li Zhipeng Liang Vinod S.Amar runzhou Huang Rajesh V.Shende Hao Fong Department of Chemistry and Applied Biological Sciences South Dakota School of Mines and TechnologyRapid CitySD 57701USA School of Biological and Chemical Engineering Anhui Polytechnic UniversityWuhu 241000AnhuiChina Department of Chemical and Biological Engineering South Dakota School of Mines and TechnologyRapid CitySD 57701USA

The objective of this study was to convert biochar,a byproduct generated from the hydrothermal process(in oxygen-limited environment)of biomass(e.g.,corn stover),into value-added *** specific,three-dimensional(3D)biochar-containing precursor sponge,which was made by using electrospun polymer nanofibers as skeleton support,was fabricated via an innovative *** weight ratio of biochar to polymer(in the precursor sponge)was 2/1,and it appeared that the biochar weight ratio could be further *** heat treatments(i.e.,stabilization in air and carbonization in argon),the precursor sponge was converted into carbon nanofibrous sponge that had the porosity of~90 vol%,the BET surface area of~51.7 m^(2) g^(−1),and the carbon content of~95 wt%;and it was mechanically elastic/*** electrochemical study indicated that,the carbon nanofibrous sponge could be utilized for making supercapacitor electrode with excellent rate capability and high kinetic *** study would not only demonstrate a high-value application of hydrothermally generated biochar,but also provide a facile while novel approach for the fabrication of carbon nanofibrous sponge which could be potentially used for various applications(particularly the energy storage application).

关键词： Electrospinning 3D nanofibrous sponge Hydrothermally generated biochar Supercapacitor electrode

High-performance flexible all-solid-state asymmetric supercapacitors based on binder-free MXene/cellulose nanofiber anode and carbon cloth/polyaniline cathode

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Nano Research 2023年第5期16卷 7696-7709页

作者： Xiaoyu Bi Meichun Li Guoqiang Zhou Chaozheng Liu runzhou Huang Yang Shi Ben Bin xu Zhanhu Guo Wei Fan Hassan Algadi Shengbo Ge Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China Integrated Composites Lab Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK School of Textile Science and Engineering&Key Laboratory of Functional Textile Material and Product of Ministry of Education Xi'an Polytechnic UniversityXi'an 710048China College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Department of Electrical Engineering Faculty of EngineeringNajran UniversityNajran11001Saudi Arabia

The search for wearable electronics has been attracted great efforts,there is an ever-growing demand for all-solid-state flexible energy storage ***,it is a challenge to obtain both positive and negative electrodes with excellent mechanical strength and match positive and negative charges to achieve high energy densities and operate voltages to satisfy practical application ***,flexible MXene(Ti_(3)C_(2)Tx)/cellulose nanofiber(CNF)composite film negative electrodes(MCNF)were fabricated with a vacuum filtration method,as well as positive electrodes(CP)by combining polyaniline(PANI)with carbon cloth(CC)using an in-situ polymerization *** positive and negative free-standing electrodes exhibited excellent electrochemical behavior and bendable/foldable *** a result,the all-pseudocapacitance asymmetric device of MCNF//CP assembled with charge-matched between anode and cathode achieves an extended voltage window of 1.5 V,high energy density of 30.6 Wh·kg^(−1)(1211 W·kg^(−1)),86%capacitance retention after 5000 cycles,the device maintains excellent bendability,*** work will pave the way for the development of all-pseudocapacitive asymmetric supercapacitors(ASC)with simultaneously preeminent mechanical properties,high energy density,wide operating voltage window.

关键词： MXene cellulose nanofiber polyaniline asymmetric supercapacitors

A national report from China Liver Transplant Registry: steroid avoidance after liver transplantation for hepatocellular carcinoma

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Chinese Journal of Cancer Research 2017年第5期29卷 426-437页

作者： Qiang Wei Feng Gao runzhou Zhuang Qi Ling Qinghong Ke Jian Wu Tian Shen Mangli Zhang Min Zhang Xiao xu Shusen Zheng Key Lab of Combined Multi-Organ Transplantation Ministry of Public Health Division of Hepatobiliary and Pancreatic Surgery Department of Surgery the First Affiliated Hospital Zhejiang University School of Medicine Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases

Objective：We aimed to evaluate the efficacy and safety of steroid-free immunosuppression after liver transplantation（LT）for hepatocellular carcinoma（HCC）.Methods：We retrospectively analyzed HCC recipients without steroids after LT（SF group,n=368）based on the China Liver Transplant Registry（CLTR）*** recipients were matched 1：2 with patients using steroids（S group,n=736）for the same period after LT for HCC,according to propensity ***：Multivariate analysis indicates that recipients with younger age[odds ratio（OR）,1.053;P=0.011],preoperative hepatitis B virus（HBV）DNA≥1,000 copies/mL（OR,2.597;P=0.004）and beyond Milan criteria（OR,4.255;P〈0.001）were identified as the risk factors associated with tumor recurrence in steroid avoidance recipients after *** patients fulfilling the Milan criteria in the SF group presented higher overall and tumor-free survival rates than those in the S group（P〈0.05）.Multivariate analysis revealed that recipient beyond Milan criteria was an independent prognostic factor for overall survival（OR,1.690;P〈0.001）and tumor-free survival（OR,2.066;P〈0.001）.The incidences of new-onset diabetes mellitus（21.20% vs.33.29%,P〈0.001）,new-onset hypertension（10.05%vs.18.61%,P〈0.001）and hyperlipidemia（4.08% vs.7.20%,P=0.042）were significantly lower in the SF ***：Steroid-free immunosuppression could be safe and feasible for HBV-related HCC patients in ***,HBV DNA level and Milan criteria maybe risk factors associated with tumor recurrence in steroid avoidance *** beyond Milan criteria was an independent prognostic factor and recipient fulfilling Milan criteria can benefit the most from steroid-free immunosuppression.

关键词： Steroid liver transplantation hepatocellular carcinoma