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An aqueous rechargeable Fe//LiMn_(2)O_()hybrid battery with superior electrochemical performance beyond mainstream Fe-based batteries

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Nano Research 2024年第6期17卷 5168-5178页

作者： Yu Liu Dehui Xie Yuxin Shi Rongguan Lv Yingna Chang Yuzhen Sun Zhiyuan Zhao Jindi Wang Kefan Song Huayu Wu tuan K.A.Hoang Rong xing Huan Pang Institute of New Energy on Chemical Storage and Power Sources School of Chemical and Environmental EngineeringYancheng Teachers UniversityYancheng 224000China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225009China Department of Chemical Engineering University of Waterloo200 University Avenue WestWaterlooOntario N2L 3G1Canada

Aqueous rechargeable batteries(ARBs)are generally safer than non-aqueous analogues,they are also less-expensive,and more friendly to the environment.However,the inherent disadvantage of the narrow electrochemical window of H2O seriously restricts the energy density and output voltage of ARBs,especially aqueous rechargeable Fe-based batteries.Herein,we introduce a new battery system:the anode contains C@Fe/Fe_(2)O_(3)composite,which is interfaced with an alkaline electrolyte;the cathode contains LiMn_(2)O_()in contact with a neutral electrolyte.A Li^(+)-conducting membrane is carefully selected to decouple the electrode-electrolyte,which effectively widens the electrochemical window to above 2.65 V,thereby enables an aqueous rechargeable iron battery.Its average output voltage is 1.83 V and its energy density is 235.3 Wh/kg at 549 W/kg.In this work,we propose the energy storage mechanism with the aid of density functional theory(DFT).The calculated reduction potential of the anode agrees with the experimental value.Furthermore,this battery system demonstrates long cycle lifespan of approximately 2500 cycles at 2 A/g,corresponding to a capacity retention of 82.1%.These results are very far superior than those of mainstream aqueous rechargeable Fe-based batteries,which guarantee future investigation for storing electricity energy.

关键词： aqueous battery high voltage high energy iron oxide theoretical calculation

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Design of the material performance test apparatus for high temperature gas-cooled reactor

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Nuclear Science and Techniques 2013年第6期24卷 132-136页

作者： REN Cheng yang xing tuan LI Cong Xin LIU Zhi Yong JIANG Sheng Yao Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Institute of Nuclear and New Energy TechnologyTsinghua University

Most materials can be easily corroded or ineffective in carbonaceous atmospheres at high temperatures in the reactor core of the high temperature gas-cooled reactor(HTGR).To solve the problem,a material performance test apparatus was built to provide reliable materials and technical support for relevant experiments of the HTGR.The apparatus uses a center high-purity graphite heater and surrounding thermal insulating layers made of carbon fiber felt to form a strong carbon reducing atmosphere inside the apparatus.Specially designed tungsten rhenium thermocouples which can endure high temperatures in carbonaceous atmospheres are used to control the temperature field.A typical experimental process was analyzed in the paper,which lasted 76 hours including seven stages.Experimental results showed the test apparatus could completely simulate the carbon reduction atmosphere and high temperature environment the same as that confronted in the real reactor and the performance of screened materials had been successfully tested and verified.Test temperature in the apparatus could be elevated up to 1600oC,which covered the whole temperature range of the normal operation and accident condition of HTGR and could fully meet the test requirements of materials used in the reactor.

关键词：高温气冷反应堆性能测试装置屏蔽材料设计性能试验装置高温气冷堆还原气氛实验过程

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Hyperthyroidism and severe bradycardia:Report of three cases and review of the literature

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World Journal of Clinical Cases 2023年第7期11卷 1549-1559页

作者： yang-Li He Wen-xing Xu tuan-Yu Fang Min Zeng Center of Geriatrics Hainan General HospitalHaikou 570311Hainan ProvinceChina Hainan Clinical Research Center for Cardiovascular Disease Hainan General HospitalHaikou 570311Hainan ProvinceChina Center of Geriatrics Hainan Affiliated Hospital of Hainan Medical UniversityHaikou 570311Hainan ProvinceChina Department of Endocrine Hainan General HospitalHaikou 570311Hainan ProvinceChina

BACKGROUND Hyperthyroidism often leads to tachycardia,but there are also sporadic reports of hyperthyroidism with severe bradycardia,such as sick sinus syndrome(SSS)and atrioventricular block.These disorders are a challenge for clinicians.CASE SUMMARY We describe three cases of hyperthyroidism with SSS and found 31 similar cases in a PubMed literature search.Through the analysis of these 34 cases,we found 21 cases of atrioventricular block and 13 cases of SSS,with 67.6%of the patients experiencing bradycardia symptoms.After drug treatment,temporary pacemaker implantation,or anti-hyperthyroidism treatment,the bradycardia of 27 patients(79.4%)was relieved,and the median recovery time was 5.5(2-8)d.Only 7 cases(20.6%)needed permanent pacemaker implantation.CONCLUSION Patients with hyperthyroidism should be aware of the risk of severe bradycardia.In most cases,drug treatment or temporary pacemaker placement is recommended for initial treatment.If the bradycardia does not improve after 1 wk,a permanent pacemaker should be implanted.

关键词： Hyperthyroidism Bradycardia Sick sinus syndrome Atrioventricular block Pacemaker Case report

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Supramolecular G-quadruplex hydrogels:Bridging fabrication to biomedical application

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Journal of Materials Science & Technology 2023年第24期155卷 238-252页

作者： Yuanfeng Li Junjie Chi Pingwei Xu xing Dong Anh-tuan Le Keqing Shi Yong Liu Jian Xiao Translational Medicine Laboratory The Center of Wound Healing and Regenerative Medicine the First Affiliated Hospital of Wenzhou Medical University Zhejiang 325035 China School of Pharmaceutical Sciences Key Laboratory of Biotechnology and Pharmaceutical Engineering The Center of Wound Healing and Regenerative Medicine the First Affiliated Hospital Wenzhou Medical University Zhejiang 325035 China Wenzhou Institute University of Chinese Academy of Sciences Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine Vision and Brain Health) Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province Zhejiang 325001 China Phenikaa University Nano Institute (PHENA) Phenikaa University Hanoi 12116 Viet Nam

G-quadruplex hydrogel is a class of self-assembled supramolecular hydrogel formed by guanine derivatives.As a biomimetic hydrogel,G-quadruplex hydrogels demonstrate wide biomedical applications,such as drug delivery,tissue engineering,and biosensing.The advantages of using G-quadruplex hydrogels include adequate biocompatibility and biodegradability,tunable multifunctionality,and cost-effective and large-scalable fabrication process.In this review,we focus on recent progress in the fabrication and characterization of G-quadruplex hydrogels to help readers understand the principles of G-quadruplex hydrogel formation.Meanwhile,the applications of G-quadruplex hydrogels in the biomedical area are discussed,aiming to pave the way for downward clinical or industry translation.The development of G-quadruplex hydrogel is still in its infancy.We hope this review will boost the development of this area and that more applications of G-quadruplex hydrogel will be developed.

关键词： Guanosine DNA hydrogel Self-assembly Drug delivery Tissue engineering

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Research on the effect of Reynolds correlation in natural convection film condensation

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Nuclear Science and Techniques 2017年第6期28卷 169-178页

作者： Lei Wu Hai-Jun Jia Xi-Zhen Ma yang Liu xing-tuan yang Jun Wang Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy TechnologyKey Laboratory of Advanced Reactor Engineering and Safety of Ministry of EducationTsinghua University Engineering Physics Institute University of Wisconsin Madison

Film condensation is a vital phenomenon in the nuclear engineering applications,such as the gas-steam pressurizer design,and heat removing on containment in the case of postulated accident.Reynolds number in film condensation can be calculated from either the mass relation or the energy relation,but few researches have distinguished the difference between them at present.This paper studies the effect of Reynolds correlation in the natural convection film condensation on the outer tube.The general forms of the heat transfer coefficient correlation of film condensation are developed in different flow regimes.By simultaneously solving a set of the heat transfer coefficient correlations with Re_(mass) and Re_(energy),the general expressions for Re_(mass) and Re_(energy) and the relation between the corresponding heat transfer coefficients are obtained.In the laminar and wavefree flow regime,Re_(mass) and Re_(energy) are equivalent,while in the laminar and wavy flow regime,Re_(mass) is much smaller than Re_(energy),and the deviation of the corresponding average heat transfer coefficients is about 30% at the maximum.In the turbulent flow regime,the relation of Re_(mass) and Re_(energy)is greatly influenced by Prandtl number.The relative deviation of their average heat transfer coefficients is the nonlinear function of Reynolds number and Prandtl number.Compared with experimental results,the heat transfer coefficient calculated from Re_(energy) is more accurate.

关键词： Film condensation Reynolds correlation Heat transfer coefficient Natural convection

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基于一流课程背景下生理学课程思政深化拓展建设

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四川生理科学杂志 2024年第1期46卷 229-230,233页

作者：买文丽徐策高瑛刘行海周圆媛张团笑杨坤丽敬华娥川北医学院基础医学院四川南充617000

一流课程的“行”如何与课程思政的“神”合一,经过3年的建设教研室提出了以国家一流课程建设为依托,线上线下双推进,构建“一理念、二融合、三团队和四共同”的生理学课程思政模式,推进生理学一流课程建设与课程思政行神合一、多元化... 详细信息

一流课程的“行”如何与课程思政的“神”合一,经过3年的建设教研室提出了以国家一流课程建设为依托,线上线下双推进,构建“一理念、二融合、三团队和四共同”的生理学课程思政模式,推进生理学一流课程建设与课程思政行神合一、多元化的发展。

关键词：课程思政一流课程生理学

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生万物之思,理生命之美——《生理学》课程思政创新成果报告

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四川生理科学杂志 2024年第3期46卷 690-692页

作者：高瑛敬华娥徐策张团笑周圆媛刘行海杨坤丽买文丽川北医学院生理教研室四川南充63700

本课程立足“立德树人”根本任务,以提升课程思政成效为主线,通过“四师”锻造“大先生”团队、重构思政课程体系化、多平台虚实交融、多样化教学模式有机结合、课程思政成效多维多元评价等教学创新,多措并举推动“专业课的课程思政”... 详细信息

本课程立足“立德树人”根本任务,以提升课程思政成效为主线,通过“四师”锻造“大先生”团队、重构思政课程体系化、多平台虚实交融、多样化教学模式有机结合、课程思政成效多维多元评价等教学创新,多措并举推动“专业课的课程思政”向“大思政”迈进,推进课程思政产出,形成具有《生理学》特色的课程思政创新范式,有效助力我校新时代“五术”医学人才培养。课程思政建设取得良好成效。学生、教师和团队硕果累累,同时,课程思政的创新理念在全国性大会报道,课程思政教学创新模式在多个兄弟院校得到借鉴推广。

关键词：《生理学》课程课程思政课程创新

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Liutex-based analysis of drag force and vortex in two-phase flow past 2-D square obstacle using LBM on GPU

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Journal of Hydrodynamics 2020年第5期32卷 820-833页

作者： Peng-xin Cheng Nan Gui xing-tuan yang Ji-yuan Tu Sheng-yao Jiang Hai-jun Jia Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy TechnologyKey Laboratory of Advanced Reactor Engineering and Safety of Ministry of EducationTsinghua UniversityBeijing 100084China School of Engineering RMIT UniversityMelbourneAustralia

The two-phase flow past a square is a ubiquitous phenomenon widely encountered in industries and engineering,where the interaction of disparate phases coupled with the influence of the solid is rather complicated.In this context,the flow characteristics and the vortex field are investigated to reveal the mechanisms of the two-phase drag and the vortex variation.The lattice Boltzmann method(LBM)is utilized to study the multi-component two-phase flow.The computation implemented on the GPU is remarkably accelerated thanks to the natural parallelism of the LBM.The process of the two-phase flow past a square is thoroughly examined.The drag and lift forces,including the total force and the components caused by the dispersed phase and the continuous phase,respectively,are obtained,and their variation mechanisms are explained.Meanwhile,the vortex-identification approaches based on the Liutex as well as the traditional methods are compared.The relationship between the bubble breakup and coalescence processes and the extremums of different vortex identification variables is analyzed.

关键词： Two-phase flow flow past a square lattice Boltzmann method(LBM) vortex identification Liutex two-phase drag

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Comparative assessment and analysis of Rortex vortex in swirling jets

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Journal of Hydrodynamics 2019年第3期31卷 495-503页

作者： Nan Gui Liang Ge Peng-xin Cheng xing-tuan yang Ji-yuan Tu Sheng-yao Jiang Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy Technology Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Tsinghua University Beijing 100084 China School of Engineering RMIT University Melbourne VIC 3083 Australia

Recently, a new definition, called Rortex, was proposed to quantify the purely rotational motion of fluids. In this work, based on the DNS data, the Rortex is used to assess and visualize the rotational motion and structure of the vortex in swirling jets in comparison with other kinds of vortex criteria, including Q , λ2,vorticity and Ω criteria. The Rortex vector,Ω, Q and criteria are found to be better than the vorticity criterion for the vortex core identification. The vector triangle formed by the Rortex R , the nonrotational shear S , and the vorticity R is analyzed to give mechanical explanations, especially of the effect of the non-rotational shear on the rotation of fluids. In addition, the probability density distributions (PDF) of the Rortex R , the nonrotational shear S, and the vorticity R are computed. The peak value of the PDF of the vorticity could be used to explain the pure rigid rotation effect and the combination effects of the rigid rotation and the non?rotational shear.

关键词： Swirling flow vortex Rortex direct numerical simulation rigid rotation non-rotational shear

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Analysis and correlation of fluid acceleration with vorticity and Liutex(Rortex)in swirling jets

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Journal of Hydrodynamics 2019年第5期31卷 864-872页

作者： Nan Gui Hou-bo Qi Liang Ge Peng-Xin Cheng Hao Wu xing-tuan yang Ji-yuan Tu Sheng-yao Jiang Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy TechnologyKey Laboratory of Advanced Reactor Engineering and Safety of Ministry of EducationTsinghua UniversityBeijing100084China School of Engineering RMIT UniversityMelbourneAustralia

The characteristics of the acceleration a and its correlation with the vortex core in the swirling flow are analyzed in this paper.The swirling flows of four swirl numbers(Sn=n S 0,0.10,0.20 and 0.36)are simulated by the direct numerical simulation,and the fluid mass particles from the inlet of the swirling flow are traced as a database for the current study.The correlations of the acceleration a with the vortex identification parameters of R andωare quantified,where R is the parameter of the“Liutex”-method proposed by Prof.Liu,and its early version is“Rortex”.The probability density functions of the included angles of a-R and a-ωare computed,which are used to clarify the geometrical configuration between a and R.The covariance coefficients between a and the parameters of various vortex core criteria(Q,λ2,ΩL,ΩR,ωand R)are computed and their relative levels of correlation are compared.Compared to the velocity,the expectation and the rms of the acceleration magnitudes and its projections on R and the plane perpendicular to R are computed for better explaining the correlation features between a and R.It is found that a and R are always either perpendicular or parallel to each other with the quantized included angles of∠(a,R)=kπ/2,(k=0,1,2).This confirms the role of R which works as the axis of the vortex exclusively.

关键词： swirling flow acceleration correlation vortex Rortex Liutex direct numerical simulation

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