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Unraveling the reaction mechanisms of electrode materials for sodiumion and potassium‐ion batteries by in situ transmission electron microscopy

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Interdisciplinary Materials 2022年第2期1卷 196-212页

作者： Hong Wang Fang Liu ruohan Yu Jinsong wu Nanostructure Research Center(NRC) Wuhan University of TechnologyWuhanHubeiChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhanHubeiChina School of Mathematics and Physics Jingchu University of TechnologyJingmenHubeiChina

Sodium ion batteries(SIBs)and potassium ion batteries(PIBs)have caught numerous attention due to the low cost and abundant availability of sodium and potassium.However,their power density,cycling stability and safety need further improvement for practical applications.Investigations on the reaction mechanisms and structural degradation when cycling are of great importance.In situ transmission electron microscopy(TEM)is one of the most significant techniques to understand and monitor electrochemical processes at an atomic scale with real-time imaging.In this review,the current progress in unraveling reaction mechanisms of electrode materials for SIBs and PIBs via in situ TEM is summarized.First,the importance of in situ TEM is highlighted.Then,based on the three types of electrochemical reaction,i.e.,intercalation reac-tion,conversion reaction and alloying reaction,the structural evolution and reaction kinetics at atomic resolution,and their relation to the electrochemical performance of electrode materials are reviewed and described in detail.Fi-nally,future directions of in situ TEM for SIBs and PIBs are proposed.Therefore,the in‐depth understanding revealed by in situ TEM will give an instructive guide in rational design of electrode materials for high performance electrode materials of SIBs and PIBs.

关键词： in situ transmission electron microscopy potassium ion batteries sodiumion batteries

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Revitalizing Human-Robot Interaction: Phygital Twin Driven Robot Avatar for China-Sweden Teleoperation

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Chinese Journal of Mechanical Engineering 2023年第5期36卷 1-6页

作者： Huiying Zhou Honghao Lv ruohan Wang Haiteng wu Geng Yang State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China Hangzhou Shenhao Technology Co. Ltd.Hangzhou 310000China Zhejiang Key Laboratory of Intelligent Operation and Maintenance Robot Hangzhou 310000China

1 Introduction Digital Twin(DT)is built and maintained in the digital rather physical realm[1,2].Dynamic DT mirrors the exact state of the physical system by means of multidimensional models describing the behavior of physical entity,and sensors providing the real-time coupling to models[3].Te outbreak of COVID-19 pandemic results in speeding up the virtualization and digitization of the physical entity with the support from DT.Nevertheless,quarantine and division led by COVID-19 pandemic make human beings’eyes for the physical interaction become more eager.Te physical world and the digital world are becoming interwoven,which indicates a new opportunity towards phygital twin.As is so often the question:how can I get closer to my distant companion?How can I extend my service or emotional concern to facilitate interaction in spite of space obstruction?Tese questions deserve thinking as a lesson learned from outbreak of COVID-19 pandemic.

关键词： Twin Robot closer

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Research on neck dissection for oral squamous-cell carcinoma:a bibliometric analysis

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International Journal of Oral Science 2021年第2期13卷 156-162页

作者： Zhou Jiang Chenzhou wu Shoushan Hu Nailin Liao Yingzhao Huang Haoran Ding ruohan Li Yi Li State Key Laboratory of Oral Diseases&National Clinical Research Center for Oral Diseases&Department of Head and Neck Oncology West China Hospital of StomatologySichuan UniversityChengduChina

Neck dissection for oral squamous-cell carcinoma(OSCC)is a clinically controversial issue and has therefore been the subject of abundant research.However,no one has performed a bibliometric study on this topic to date.The aim of this study was to assess the development of research on neck dissection for OSCC in terms of the historical evolution,current hotspots and future directions,particularly including research trends and frontiers from 2010 to 2019.Literature records related to research on neck dissection for OSCC were retrieved from the Web of Science Core Collection(WoSCC).CiteSpace was used as a tool to perform a bibliometric analysis of this topic.The survey included 2096 papers.“Otorhinolaryngology”was the most popular research area.The most active institutions and countries were Memorial Sloan Kettering Cancer Center and the USA,respectively.Shah J.P.was the most cited author.Among the six identified“core journals”,Head&Neck ranked first.The top three trending keywords were‘invasion’,‘upper aerodigestive’and‘negative neck’.‘D’Cruz AK(2015)’was the most cited and the strongest burst reference in the last decade.The study evaluated the effect on survival of elective versus therapeutic neck dissection in patients with lateralized early-stage OSCC.The depth of invasion and the management of N0 OSCC were research frontiers in this field.The present study provides a comprehensive bibliometric analysis of research on neck dissection for OSCC,which will assist investigators in exploring potential research directions.

关键词： dissection invasion squamous

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Correlation between lower gastrointestinal tract symptoms and quality of life in patients with stable chronic obstructive pulmonary disease

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Journal of Traditional Chinese Medicine 2013年第5期33卷 608-614页

作者： Yan Sun Fengjie Zheng Yuhang Li Ruohan Wu Yuchao Liu Miao Liu Jinchao Zhang Kuo Gao School of Preclinical Medicine Beijing University of Chinese Medicine

OBJECTIVE:To explore correlations between the symptoms of constipation and abdominal distention and severity of chronic obstructive pulmonary disease(COPD)in patients with stable disease.METHODS:We studied 191 patients with stable COPD(according to defined criteria)in this cross-sectional study from four three-level class A Chinese medicine hospitals in China.We built an Epidata 3.0 database and performed statistical analysis with SPSS,version 17.0.We analyzed correlations between the frequency of lower gastrointestinal tract symptoms(constipation and abdominal distention)and scores for major pulmonary symptoms(cough,sputum and wheezing)based on the St.George's Respiratory Questionnaire(SGRQ),6-minute walking distance(6MWD)and frequency of acute exacerbations of COPD(AECOPD).RESULTS:In addition to their pulmonary symptoms,39.79%and 40.31%of study patients withstable COPD reported constipation and abdominal distention,respectively.Scores for major pulmonary symptoms(cough,sputum and wheezing),AECOPD and SGRQ values in patients with constipation and abdominal distention were significantly greater,and the 6MWD markedly shorter,than in those without them.According to Pearson's correlation analysis,there were strong correlations between these lower gastrointestinal tract symptoms and scores for pulmonary symptoms,SGRQ,6MWD and AECOPD.CONCLUSION:Lower gastrointestinal tract symptoms such as constipation and abdominal distention can adversely affect pulmonary symptoms,frequency of acute exacerbations and quality of life in patients with stable COPD.

关键词：慢性阻塞性肺病消化道症状稳定期病情生活慢性阻塞性肺疾病质量 COPD

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Tuning Active Metal Atomic Spacing by Filling of Light Atoms and Resulting Reversed Hydrogen Adsorption-Distance Relationship for Efficient Catalysis

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Nano-Micro Letters 2023年第10期15卷 151-162页

作者： Ding Chen Ruihu Lu ruohan Yu Hongyu Zhao Dulan wu Youtao Yao Kesong Yu Jiawei Zhu Pengxia Ji Zonghua Pu Zongkui Kou Jun Yu Jinsong wu Shichun Mu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China NRC(Nanostructure Research Centre) Wuhan University of TechnologyWuhan 430070People’s Republic of China

Precisely tuning the spacing of the active centers on the atomic scale is of great significance to improve the catalytic activity and deepen the understanding of the catalytic mechanism,but still remains a challenge.Here,we develop a strategy to dilute catalytically active metal interatomic spacing(d_(M-M))with light atoms and discover the unusual adsorption patterns.For example,by elevating the content of boron as interstitial atoms,the atomic spacing of osmium(d_(Os-Os))gradually increases from 2.73 to 2.96?.More importantly,we find that,with the increase in dOs-Os,the hydrogen adsorption-distance relationship is reversed via downshifting d-band states,which breaks the traditional cognition,thereby optimizing the H adsorption and H_2O dissociation on the electrode surface during the catalytic process;this finally leads to a nearly linear increase in hydrogen evolution reaction activity.Namely,the maximum dOs-Os of 2.96?presents the optimal HER activity(8 mV@10 mA cm^(-2))in alkaline media as well as suppressed O adsorption and thus promoted stability.It is believed that this novel atomic-level distance modulation strategy of catalytic sites and the reversed hydrogen adsorption-distance relationship can shew new insights for optimal design of highly efficient catalysts.

关键词： Electrocatalysis DFT calculation Interstitial filling Hydrogen evolution Structure–activity relationships

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ZIF-Mediated Anchoring of Co species on N-doped Carbon Nanorods as an Efficient Cathode Catalyst for Zn-Air Batteries

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Energy & Environmental Materials 2023年第3期6卷 257-263页

作者： Qiang Yu Jianshuai Lv Jiantao Li ruohan Yu Jinsong wu Shibo Xi Xinyuan Li Nuo Xu Liang Zhou Liqiang Ma State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Qingdao National Laboratory for Marine Science and Technology Qingdao 266237China Nanostructure Research Centre Wuhan University of TechnologyyWuhan 430070China Institute of Chemical and Engineering Sciences A*STAR(Agency for ScienceTechnology and Research)Singapore 627833Singapore School of Science Wuhan University of TechnologyWuhan 430070China

Developing efficient oxygen reduction reaction(ORR)catalyst is essential for the practical application of Zn-air batteries(ZABs).In this contribution,we develop a novel zeolitic imidazolate framework(ZIF)-mediated strategy to anchor Co species on N-doped carbon nanorods for efficient ORR.Featuring ultrahigh N-doping(10.29 at.%),monodisperse Co nanocrystal decoration,and well-dispersed Co-N_(x)functionalization,the obtained Co-decorated N-doped carbon nanorods(Co@NCNR)exhibit a decent ORR performance comparable to commercial Pt/C in alkaline media.Aqueous ZABs have been assembled using Co@NCNR as the cathode catalyst.The assembled ZABs manifest high initial open-circuit voltage as well as high energy density.In addition,the Co@NCNR also demonstrates ideal ORR performance in quasi-solid-state ZABs.

关键词： Co nanocrystals Co-N_(x) N-doped carbon oxygen reduction reaction Zn-air battery

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Chinese herbal medicine for hand-foot-and-mouth disease in children: An overview of systematic reviews

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Journal of Traditional Chinese Medical Sciences 2018年第2期5卷 83-93页

作者： Ruohan Wu Shigang Liu Jin Sun Lily Lai Jianping Liu Centre for Evidence-Based Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China Department of Respiratory Diseases Guang'anmen HospitalChina Academy of Chinese Medical SciencesBeijing 100053China Complementary and Integrated Medicine Research Unit Primary Care and Population SciencesUniversity of SouthamptonSO16 5STUK

Objective:To summarize the use of Chinese herbal medicines (CHM) for the treatment of hand-foot-and-mouth disease (HFMD) in children and to provide high-level evidence for clinical decision-making.Methods:We conducted an overview of systematic reviews (SRs).Two English-language and four Chinese-language electronic databases were searched from inception to March 31,2018.Published SRs and meta-analyses evaluating CHM use in children with HFMD and reporting clinically-relevant outcomes such as time to fever resolution were eligible for inclusion in this overview.Reviews were accepted if the intervention featured CHM with or without other treatment.Two authors evaluated the methodological quality of the included SRs by using ASMTAR and ROBIS.Results:Thirty SRs comprising 90 244 children with HFMD were included in this overview of SRs.All SRs were published in Chinese between 2011 and 2017.All intervention arms received CHM with or without conventional treatment and were compared against control arms receiving no treatment,conventional treatment alone,or placebo.All 30 reviews reported the time to fever resolution and results demonstrated that CHM had a greater benefit in reducing fever compared with controls.Twenty-three reviews reported the time to rash resolution which presented similar results.Fourteen SRs reported the time to oral ulcer healing and CHM demonstrated a significantly reduced time to resolution compared to controls.The quality of the included SRs was low to moderate as assessed by the AMSTAR tool.Conclusion:Published reviews demonstrated potential benefits of CHM in children with HFMD.Overall,the methodological quality of reviews included in this overview of SRs was low and our findings should be interpreted with caution.We would strongly recommend that future SRs be designed and reported rigorously following PRISMA in order to provide more robust evidence on which to base clinical guidance.

关键词： Chinese herbal medicine Hand-foot-mouth disease Overview AMSTAR ROBIS

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Observer-based Adaptive Event-Triggered Control for Robust Cooperative Output Regulation of Multi-Agent Systems

Observer-based Adaptive Event-Triggered Control for Robust C...

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第36届中国控制会议

作者： Miaomiao wu ruohan Yang Hao Zhang Department of Control Science and Engineering Tongji University

ISBN: (纸本)9781538629185

This paper is concerned with the distributed control for robust output regulation of multi-agent systems（MASs） with adaptive event-triggered mechanism.A novel distributed adaptive control law based on output feedback is developed,which can avoid using the minimal nonzero eigenvalue of Laplacian matrix associated with global system topology and reduce the frequency of data transmission.It is shown that the proposed control law achieves robust cooperative output regulation asymptotically and Zeno behavior is excluded.Finally,a numerical example is given to verify the efficiencies of theoretical results.

关键词： Robust output regulation Adaptive control Event-triggered Multi-agent systems

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Sugarcane bagasse dietary fiber as an adjuvant therapy for stable chronic obstructive pulmonary disease:a four-center,randomized,double-blind,placebo-controlled study

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Journal of Traditional Chinese Medicine 2016年第4期36卷 418-426页

作者： Liu Miao Zheng Fengjie Ni Lei Sun Yan wu ruohan Zhang Tianyu Zhang Jinchao Zhong Xianggen Li Yuhang School of Preclinical Medicine Beijing University of Chinese Medicine

OBJECTIVE:To evaluate the efficacy and safety of sugarcane bagasse dietary fiber as an adjuvant therapy for improving quality of life in patients with stable chronic obstructive pulmonary disease(COPD).METHODS:This was a multicenter,randomized,double-blind,placebo-controlled trial.A total of196 participants were randomized into a trial group(treated with 6 g/day sugarcane bagasse plus conventional treatment,n = 98) and a control group(treated with placebo plus conventional treatment,n = 98).All efficacy analyses were performed according to the intention-to-treat(ITT) principle.A per-protocol analysis set(PPS) was used to analyze the cases that completed the clinical trial with good compliance.The trial period was 30 days,with a 6-month follow-up.Pre-and post-treatmentpulmonary symptom scores(cough,sputum,wheezing,and dyspnea) were recorded for both groups.The St.George's Respiratory Questionnaire(SGRQ) and the modified Medical Research Council(m MRC) dyspnea scale were assessed before treatment and at the end of the 6-month follow-up.RESULTS:The ITT population was 178 and the PPS population was 166.Post-treatment pulmonary clinical symptoms and severity of dyspnea(m MRC and SGRQ evaluation) were significantly improved in both the trial group and the control group(ITT and PPS:P < 0.05).However,there was no statistical difference between the two groups in post-treatment pulmonary symptoms and m MRC.There was a greater reduction in the SGRQ subscales of activity,effect and total score in the trial group compared with the control group(ITT and PPS:P < 0.01).There was no statistical difference in pre-and post-treatment safety variables in either group.CONCLUSION:Sugarcane bagasse combined with conventional treatment improved quality of life in patients with stable COPD.Sugarcane bagasse appears to be a safe herbal medicine with potential for treating patients with stable COPD when taken orally as an adjuvant therapy.

关键词： Saccharum Pulmonary disease chronic obstructive Randomized clinical trial Medicine Chinese Traditional

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带吸收剂存储的火电机组碳捕集系统预测控制

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动力工程学报 2022年第11期42卷 1123-1130页

作者：邱若菡席涵吴啸东南大学大型发电装备安全运行与智能测控国家工程研究中心南京210096

结合系统特性和运行目标,为带吸收剂存储的火电机组碳捕集系统设计有效控制系统是实现灵活性支撑功能的关键。在深入分析带溶剂存储的碳捕集系统动态特性的基础上,提出基于吸收-解吸过程独立设计和基于系统整体设计的2种控制方法,利用... 详细信息

结合系统特性和运行目标,为带吸收剂存储的火电机组碳捕集系统设计有效控制系统是实现灵活性支撑功能的关键。在深入分析带溶剂存储的碳捕集系统动态特性的基础上,提出基于吸收-解吸过程独立设计和基于系统整体设计的2种控制方法,利用贫液质量流量和富液质量流量分别控制碳捕集率和再沸器温度,考虑到预测模型中烟气和抽汽对系统性能的影响,引入前馈作用,实现对扰动的及时补偿。结果表明:所提2种控制方法可以实现碳捕集率的快速调节并有效抑制烟气与抽汽的扰动影响,控制性能优于常规控制方法。

关键词：火电机组化学吸收碳捕集吸收剂存储预测控制灵活运行

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