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One-step,in situ formation of WN-W_(2)C heterojunctions implanted on N doped carbon nanorods as efficient oxygen reduction catalyst for metal-air battery

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Nano Research 2023年第7期16卷 8773-8781页

作者： Yue Du Wenxue Chen Lina Zhou Rui Hu Shizhu Wang Xueqing Li Yunlong Xie Lun Yang yisi liu Zhenhui liu Institute for Advanced Materials Hubei Normal UniversityHuangshi 435002China College of Material Science and Engineering Jiangsu Key Laboratory of Materials and Technology for Energy ConversionNanjing University of Aeronautics and AstronauticsNanjing 210016China

Transition metal nitrides and carbides have attracted intensive attentions in metal-air battery application due to their metallic electron transport behavior and high chemical stability toward the oxygen reduction reaction(ORR).Herein,the polyoxometalate@polyaniline composite derived WN-W_(2)C heterostructured composite(WN-W_(2)C@pDC)has been fabricated through an in situ nitriding-carbonization strategy,with WN-W_(2)C nanoparticles implanted on N doped carbon nanorods.Asfabricated WN-W_(2)C@pDC demonstrates prominent electrocatalytic performance towards ORR and excellent cycling stability in metal-air battery,which possesses positive half-wave potential and large diffusion limiting current density(0.81 V and 5.8 mA·cm^(-2)).Moreover,it demonstrates high peak power density of 157.4 mW·cm^(-2)as Al-air primary cathode and excellent stability at the discharge-charge test(>500 h)of Zn-air secondary battery.The excellent activity and durability of WNW_(2)C@pDC catalyst should be attributed to the combined effect of intimate WN-W_(2)C heterointerfaces,unique embedded nanoparticles structure,and excellent electrical media of N doped carbon,confirmed by a series of contrast experiments.

关键词： WN-W_(2)C heterojunctions polyoxometalate@polyaniline composite oxygen reduction reaction metal-air battery

MELD or MELD-Na as a Predictive Model for Mortality Following Transjugular Intrahepatic Portosystemic Shunt Placement

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Journal of Clinical and Translational Hepatology 2023年第1期11卷 38-44页

作者： Arunkumar Krishnan Tinsay A.Woreta Dhananjay Vaidya yisi liu James P.Hamilton Kelvin Hong Alia Dadabhai Michelle Ma Division of Gastroenterology and Hepatology Johns Hopkins University School of MedicineBaltimoreMDUSA Department of General Internal Medicine Johns Hopkins University School of MedicineBaltimoreMDUSA Department of Pediatrics Johns Hopkins University School of MedicineBaltimoreMDUSA Division of Interventional Radiology Johns Hopkins University School of MedicineBaltimoreMDUSA

Background and Aim:The model for end-stage liver disease(MELD)was originally developed to predict survival after transjugular intrahepatic portosystemic shunt(TIPS).The MELD-sodium(MELD-Na)score has replaced MELD for organ allocation for liver transplantation.However,there are limited studies to compare the MELD with MELD-Na to predict mortality after TIPS.Methods:We performed a retrospective chart review of patients who underwent TIPS placement between 2006 and 2016 at our institution.The primary outcome was mortality,and the secondary outcomes sought to assess which variables could provide prognostic information for mortality after TIPS placement.We performed receiver operating characteristic(ROC)curve analysis to assess the performance of MELD and MELD-Na.Results:There were 186 eligible patients in the analysis.The mean pre-TIPS MELD and MELD-Na were 13 and 15,respectively.Overall,mortality after TIPS was 15%at 30 days and 16.7%at 90 days.In a comparison of the areas under the ROCs for MELD and MELD-Na,MELD was superior to MELD-Na for 30-day(0.762 vs.0.709)and 90-day(0.780 vs.0.730)mortality after TIPS.The optimal cutoff score for 30-day mortality was 15(0.676–0.848)for MELD and 17(0.610–0.808)for MELD-Na,whereas the optimal cutoff score for 90-day mortality was 16(95%CI:0.705–0.855)for MELD and 17(95%CI:0.643–0.817)for MELDNa.There were 24 patients with high MELD-Na≥17,but with low MELD<15,and 90-day mortality in this group was 8.3%.Conclusions:Although MELD-Na is a superior prognostic tool to MELD for predicting overall mortality in cirrhotic patients,MELD tended to outperform MELD-Na to predict mortality after TIPS.

关键词： Cirrhosis Portal hypertension Model for end-stage liver disease Sodium Transjugular intrahepatic portosystemic shunt Outcomes Mortality

Hierarchical porous yolk-shell Co-N-C nanocatalysts encaged in graphene nanopockets for high-performance Zn-air battery

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Nano Research 2023年第7期16卷 8893-8901页

作者： yisi liu Zongxu Li Shizhu Wang Jinnan Xuan Dongbin Xiong Lina Zhou Jianqing Zhou Jun Wang Yahui Yang Yue Du Institute for Advanced Materials Hubei Normal UniversityHuangshi 435002China Jiangsu Key Laboratory of Materials and Technology for Energy Conversion College of Material Science and EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China National&Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources College of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China

The rational design and preparation of promising cathode electrocatalysts with excellent activity and strong stability for metal-air batteries is a huge challenge.In this work,we innovate an approach of combining solvothermal with high-temperature pyrolysis utilizing zeolitic imidazolate framework(ZIF)-8 and ZIF-67 as the template to synthesize a novel hybrid material of hierarchical porous yolk-shell Co-N-C polyhedron nanocatalysts engaged in graphene nanopocket(yolk-shell Co-N-C@GNP).The obtained catalyst exhibits prominent bifunctional electrocatalytic performance for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)in the alkaline condition,in which the half-wave potential is 0.86 V for ORR,and the over-potential for OER is 0.42 V at 10 mA·cm^(-2).The rechargeable aqueous Zn-air battery fabricated with yolk-shell Co-N-C@GNP cathode deliveries an open circuit voltage(OCV)of 1.60 V,a peak power density of 236.2 mW·cm^(-2),and excellent cycling stability over 94 h at 5 mA·cm^(-2).The quasi-solid-state Zn-air battery(ZAB)using yolk-shell Co-N-C@GNP displays a high OCV of 1.40 V and a small voltage gap of 0.88 V in continuous cycling tests at 2 mA·cm^(-2).This work provides a valuable thought to focus attention on the design of high-efficient bifunctional catalysts with hierarchical porous yolk-shell framework and high-density metal active sites for metal-air battery technologies.

关键词： zeolitic imidazolate framework(ZIF)-67@ZIF-8 yolk-shell graphene nanopocket Bi-functional catalysts Zn-air battery

Structural Design Optimization Based on the Moving Baseline Strategy

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Acta Mechanica Solida Sinica 2020年第3期33卷 307-326页

作者： Xiaojun Wang Qiang Ren Wenpin Chen yisi liu Lei Wang Xuyun Ding Institute of Solid Mechanics School of Aeronautic Science and EngineeringBeihang UniversityBeijing 100083China Shanghai Marine Equipment Research Institute(SMERI) Shanghai 200031China

Structural design optimization has always been a topic of concern in industry because good design can improve the safety and economic efficiency of structures during their service periods.Selecting the appropriate optimization algorithm is the key to solving structural optimal design problems.In this study,a new global optimization idea is proposed and named the moving baseline strategy.A baseline is initially set and will be repeatedly moving upward or downward to approach the optimal value.The proposed strategy is a simple but effective,general,and stable algorithm that can be used to solve constrained and unconstrained structural optimization problems.Different from traditional gradient-based,stochastic and heuristic algorithms,the developed algorithm provides a completely new idea to solve global or local optimization problems.Some unconstrained and constrained numerical benchmark examples are used to test the proposed methodology.In addition,structural optimal design problems of a ten-bar planar truss structure and a hypersonic wing structure(X-37B)are utilized to verify the effectiveness of the developed strategy in addressing structural design optimization problems in engineering.

关键词： Structural design Global optimization Optimization algorithm Moving baseline strategy Constrained optimization

复调理论视阈下的美术馆展览实践——以成都麓湖·A4美术馆iSTART儿童艺术节为例

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博物院 2024年第1期 85-91页

作者：刘艺思杜辉西南民族大学旅游与历史文化学院成都610041

本文以成都麓湖·A4美术馆(以下简称“A4美术馆”)iSTART儿童艺术节展览为例,探讨复调性之于美术馆展览实践的积极意义。iSTART儿童艺术节旨在以儿童为中心,构建机构、学校、家庭、社区等多元主体的复调关系,以对话、参与式策展实现策... 详细信息

本文以成都麓湖·A4美术馆(以下简称“A4美术馆”)iSTART儿童艺术节展览为例,探讨复调性之于美术馆展览实践的积极意义。iSTART儿童艺术节旨在以儿童为中心,构建机构、学校、家庭、社区等多元主体的复调关系,以对话、参与式策展实现策展权力的去中心化,延展策展实践逻辑,完成多重文化实践。研究者通过参与式观察,厘清展览实践中的对话主体,探究儿童如何从边缘到复调关系的中心,以及展览中的赋权机制的运作和权力再分配等议题。同时,认为复调性思维和工作方法对打造参与式展览、提升展览教育性、促进社区参与均具有积极意义。

关键词：复调性儿童展览游戏化

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基于“岗课赛证”融通高职院校羽毛球课程教学策略研究

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冰雪体育创新研究 2024年第4期 126-128页

作者：刘伊思连云港师范高等专科学校江苏连云港222000

为了适应社会发展对人才培养的需求,高职院校在强调教育的适应性方面进行了一系列的改革,但还存在高职毕业生竞争优势不足的共性问题。鉴于此,高职院校结合社会对人才的需求提出“岗课赛证”的综合育人教学的改革,加大高职人才的职业适... 详细信息

为了适应社会发展对人才培养的需求,高职院校在强调教育的适应性方面进行了一系列的改革,但还存在高职毕业生竞争优势不足的共性问题。鉴于此,高职院校结合社会对人才的需求提出“岗课赛证”的综合育人教学的改革,加大高职人才的职业适应性。因此该文以“岗课赛证”综合育人的教学改革为依托,探讨羽毛球课程教学的发展策略,找出体育专业人才的创新培养模式。

关键词：岗课赛证融通高职羽毛球

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乙型肝炎疫苗——从预防到治疗

临床肝胆病杂志 2024年第5期40卷 1021-1025页

作者：刘义思任姗郑素军陈新月首都医科大学附属北京佑安医院肝病中心一科北京100069

乙型肝炎疫苗的接种是预防HBV感染最经济、有效的方法。分子生物学和基因工程的进步使得疫苗的制造工艺不断完善,乙型肝炎疫苗也从最开始的血源性疫苗逐渐发展至当下所应用的重组疫苗。预防性乙型肝炎疫苗在临床中已试用于HBsAg清除人... 详细信息

乙型肝炎疫苗的接种是预防HBV感染最经济、有效的方法。分子生物学和基因工程的进步使得疫苗的制造工艺不断完善,乙型肝炎疫苗也从最开始的血源性疫苗逐渐发展至当下所应用的重组疫苗。预防性乙型肝炎疫苗在临床中已试用于HBsAg清除人群以提高抗-HBs水平,且具有安全性及有效性。并且作为治疗CHB新药的多种靶点之一,基于HBsAg的治疗性乙型肝炎疫苗已经在研发和临床试验中。

关键词：乙型肝炎,慢性乙型肝炎疫苗临床试验

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A comprehensive review on recent progress in aluminum-air batteries

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Green Energy & Environment 2017年第3期2卷 246-277页

作者： yisi liu Qian Sun Wenzhang Li Keegan R.Adair Jie Li Xueliang Sun Department of Mechanical and Materials Engineering University of Western Ontario School of Chemistry and Chemical Engineering Central South University

The aluminum-air battery is considered to be an attractive candidate as a power source for electric vehicles(EVs) because of its high theoretical energy density(8100 Wh kg^(-1)), which is significantly greater than that of the state-of-the-art lithium-ion batteries(LIBs). However,some technical and scientific problems preventing the large-scale development of Al-air batteries have not yet to be resolved. In this review, we present the fundamentals, challenges and the recent advances in Al-air battery technology from aluminum anode, air cathode and electrocatalysts to electrolytes and inhibitors. Firstly, the alloying of aluminum with transition metal elements is reviewed and shown to reduce the selfcorrosion of Al and improve battery performance. Additionally for the cathode, extensive studies of electrocatalytic materials for oxygen reduction/evolution including Pt and Pt alloys, nonprecious metal catalysts, and carbonaceous materials at the air cathode are highlighted.Moreover, for the electrolyte, the application of aqueous and nonaqueous electrolytes in Al-air batteries are discussed. Meanwhile, the addition of inhibitors to the electrolyte to enhance electrochemical performance is also explored. Finally, the challenges and future research directions are proposed for the further development of Al-air batteries.

关键词： Aluminum-air battery Aluminum anode Air cathode Oxygen reduction reaction Electrolytes

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Potential benefits of precise corticosteroids therapy for severe 2019-nCoV pneumonia

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Signal Transduction and Targeted Therapy 2020年第1期5卷 2345-2347页

作者： Wei Zhou yisi liu Dongdong Tian Cheng Wang Sa Wang Jing Cheng Ming Hu Minghao Fang Yue Gao Department of Pharmaceutical Sciences Beijing Institute of Radiation Medicine100850 BeijingP.R.China School of Nursing Capital Medical University100069 BeijingP.R.China Department of Pharmacy Hebei General Hospital050000 ShijiazhuangP.R.China Department of Orthopedics First Medical CenterGeneral Hospital of Chinese PLA100853 BeijingP.R.China Emergency Department The Second Affiliated Hospital of Zhejiang University School of Medicine310009 HangzhouP.R.China Emergency Surgery Department Tongji Hospital Affiliated to Tongji Medical CollegeHuazhong University of Science and Technology430030 WuhanP.R.China Intensive Care Unit Wuhan Pulmonary Hospital430030 WuhanP.R.China Emergency and Intensive Care Unit Tongji Hospital Affiliated to Tongji Medical CollegeHuazhong University of Science and Technology430030 WuhanP.R.China

Dear Editor,Since last December,the outbreak of 2019-nCoV in Wuhan has caused ever-increasing attention and public panic all over the world.Up to February 9,2020,40,171 patients had been diagnosed with 2019-nCoV infection,including 6484(16.14%)severe cases and 908 deaths(2.27%).Compared to SARS and MERS,2019-nCoV appears to be much more contagious but less lethal,as most patients have mild symptoms and good prognosis1,2.However,according to the Chinese government’s daily report,13.2–21.3%of patients with 2019-nCoV infection developed into severe or fatal illness(Fig.S1a),which is characterized by the rapid development to acute respiratory distress syndrome(ARDS)or septic shock.Along with an increasing number of confirmed cases,the cumulative total of severe patients with 2019-nCoV is growing(Fig.S1b).Treatment of these critically ill patients is becoming one of the major challenges we are facing.

关键词： distress acute precise