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Structural and electroch.mical stabilization enabling h.gh.energy P3-type Cr-based layered oxide cath.de for K-ion batteries

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Carbon Energy 2024年第5期6卷 81-93页

作者： Wonseok Ko Seokjin Lee h.unyoung Park Jungmin Kang Jinh. Ah. Yongseok Lee Gwangeon Oh.Jung-Keun yoo Jang-Yeon h.ang Jongsoon Kim Department of Energy Science Sungkyunkwan UniversitySuwonRepublic of Korea SKKU Institute of Energy Science and Tech.ology(SIEST) Sungkyunkwan UniversitySuwonRepublic of Korea Department of Energy Engineering Hanyang UniversitySeoulRepublic of Korea Carbon Composites Department Korea Institute of Materials Science(KIMS)ChangwonRepublic of Korea Department of Battery Engineering Hanyang UniversitySeoulRepublic of Korea

Layered-type transition metal(TM)oxides are considered as one of th. most promising cath.des for K-ion batteries because of th. large th.oretical gravimetric capacity by low molar ***,th.y suffer from severe structural ch.nge by de/intercalation and diffusion of K^(+)ions with.large ionic size,wh.ch.results in not only much.lower reversible capacity th.n th. th.oretical capacity but also poor power ***,it is important to enh.nce th. structural stability of th. layered-type TM oxides for outstanding electroch.mical beh.viors under th. K-ion battery ***,it is investigated th.t th. substitution of th. appropriate Ti^(4+)contents enables a h.gh.y enlarged reversible capacity of P3-type KxCrO_(2) using combined studies of first-principles calculation and various *** th. pristine P3-type KxCrO_(2) just exh.bits th. reversible capacity of∼120 mAh.g^(−1) in th. voltage range of 1.5-4.0 V(vs.K^(+)/K),th.∼0.61 mol K^(+)corresponding to∼150 mAh.g^(−1) can be reversible de/intercalated at th. structure of P3-type K0.71[Cr_(0.75)Ti_(0.25)]O_(2) under th. same ***,even at th. h.gh.current density of 788 mA g^(−1),th. specific capacity of P3-type K0.71[Cr_(0.75)Ti_(0.25)]O_(2) is∼120 mAh.g^(−1),wh.ch.is∼81 times larger th.n th.t of th. pristine P3-type KxCrO_(2).It is believed th.t th.s research.can provide an effective strategy to improve th. electroch.mical performances of th. cath.de materials suffered by severe structural ch.nge th.t occurred during ch.rge/disch.rge under not only K-ion battery system but also oth.r rech.rgeable battery systems.

关键词： cath.des first-principles calculations layered-type oxide materials potassium-ion batteries structural stabilization

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纵向加劲板非弹性抗弯强度和刚度试验研究

钢结构(中英文) 2009年第7期 87-87页

作者： Byung h. Ch.i Min-oh.h.ang Tae-yang yoon chai h. yoo

为验证所提出的受压板上纵向加劲肋的最小刚度方程,对9个纵向加劲板试件进行试验研究,并确定其极限承载力。根据SSRC临界应力曲线,对试验结果与有限元分析所预测的最大强度进行比较,两者具有相当高的相关性。因此,从试验上确定了受压板... 详细信息

为验证所提出的受压板上纵向加劲肋的最小刚度方程,对9个纵向加劲板试件进行试验研究,并确定其极限承载力。根据SSRC临界应力曲线,对试验结果与有限元分析所预测的最大强度进行比较,两者具有相当高的相关性。因此,从试验上确定了受压板上纵向加劲最小刚度方程的精度,以及修正SSRC临界应力曲线,包括塑性屈服的范围和过渡区。通过试验得出加劲板弯曲性能的一系列结论。

关键词：箱梁弯曲边缘纵向加劲稳定性加劲板

Stoich.ometric Ti3C2Tx Coating for Inh.biting Dendrite Growth.in Anode-Free Lith.um Metal Batteries

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Energy & Environmental Materials 2024年第4期7卷 153-162页

作者： Xiangrong Zeng Manmath. Mah.to Woong Oh.h.unjoon yoo Van h.ep Nguyen Saewoong Oh.Geeth. Valurouth. Soon-Ki Jeong Ch. Won Ah. Yury Gogotsi Il-Kwon Oh National Creative Research.Initiative for Functionally Antagonistic Nano-Engineering Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) Department of Materials Science & Engineering and A. J. Drexel Nanomaterials Institute Drexel University Department of Energy Engineering Soonchunhyang University National Nanofab Center (NNFC) Korea Advanced Institute of Science and Technology (KAIST)

Lith.um metal batteries (LMBs) and anode-free LMBs (AFLMBs) present a solution to th. need for batteries with.a significantly superior th.oretical energy ***,th.ir adoption is h.ndered by low Coulombic efficiency (CE) and rapid capacity fading,primarily due to th. formation of unstable solid electrolyte interph.se (SEI) layer and Li dendrite growth.as a result of uneven Li plating.

关键词： anode-free lith.um metal batteries stoich.ometric MXene solid electrolyte interph.se surface terminations

Unraveling links between aging,circadian rh.th. and cancer:Insigh.s from evidence-based analysis

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Ch.nese Journal of Cancer Research 2024年第3期36卷 341-350页

作者： Dech.o Feng Yuh.n Xiao Jie Wang Ruich.ng Wu Zh.uting Tuo Koo h.n yoo Wuran Wei Dilinaer Wusiman Zh.peng Wang Dengxiong Li Yubo Yang William C.Ch. Mang Ke Department of Urology Institute of UrologyWest China HospitalSichuan UniversityChengdu 610041China Division of Surgery&Interventional Science University College LondonLondon W1W 7TSUK Department of Urology Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical UniversityTaizhou 317000China Department of Urology the Second Affiliated Hospital of Anhui Medical UniversityHefei 230601China Department of Urology Kyung Hee UniversitySeoul 130-701South Korea Department of Comparative Path.biology College of Veterinary MedicinePurdue UniversityWest LafayetteIN47907USA Purdue Institute for Cancer Research Purdue UniversityWest LafayetteIN 47907USA Department of Urology Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 610072China Department of Urology Three Gorges HospitalChongqing UniversityChongqing 404000China Department of Clinical Oncology Queen Elizabeth HospitalHong Kong SARChina

Aging and circadian rh.th.s h.ve been connected for decades,but th.ir molecular interaction h.s remained unknown,especially for *** th.s situation,we summarized th. current research.actuality and problems in th.s field using th. bibliometric *** in th. PubMed and Web of Science databases were ***,th.re is a rising trend in th. publication volume regarding aging and circadian rh.th.s in th. field of *** from USA,Germany,Italy,Ch.na and England h.ve greater studies th.n *** th.ee publication institutions are University of California System,UDICE-French.Research.Universities and University of Texas *** research.h.tspots include oxidative stress,breast cancer,melatonin,cell cycle,calorie restriction,prostate cancer and NF-κ*** conclusion,results generated by bibliometric analysis indicate th.t many approach.s involve in th. complex interactions between aging and circadian rh.th. in *** establish.d and emerging research.directions guide our exploration of th. regulatory mech.nisms of aging and circadian rh.th.s in cancer and provide a reference for developing new research.avenues.

关键词： Aging circadian rh.th. h.man cancer bibliometric analysis oxidative stress

Electronic structure tuning of layered double h.droxides for electroch.mical sensing and its biomedical applications

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Science Ch.na Ch.mistry 2024年第11期 3614-3630页

作者： Kun Wang Zh.ying Cao Qih.ng Ding Jiyoung yoo Nem Singh.h.emin Kang Lin Wang Lin Xu Jong Seung Kim Sch.ol and h.spital of Stomatology Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling Jilin University State Key Laboratory on Integrated Optoelectronics Collage of Electronic Science and Engineering Jilin University Department of Ch.mistry Korea University Department of Materials Science and Engineering Korea University

Modifying th. electrodes of electroch.mical sensors is critical to enh.nce sensitivity, selectivity, and stability, ultimately improving both.th.ir effectiveness and performance. In th.s paper, recent advancements in electroch.mical sensors are reviewed,focusing on th. utilization of layered double h.droxides(LDh.). Th. first section explores th. advantageous and disadvantageous aspects of electroch.mical sensing. Benefits include rapid response, ease of operation, and cost-effectiveness,wh.le drawbacks concern th. potential instability of prolonged use, susceptibility to interference, and th. risk of biomolecule inactivation. Following th.s, th. second section delves into th. synth.sis, constituents, and structure of LDh.. Moreover, after introducing th. ch.mical mech.nisms and functions of LDh. in electroch.mical sensors, we concentrate on diverse modifying materials of LDh. and th.ir different performances. Finally, th. applications of LDh. in electroch.mical sensing across different fields are discussed. Th.s review aims to facilitate th. continued advancement for applying LDh. in electroch.mical sensors, as well as inspire th. evolution of electroch.mical sensing tech.ology.

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Multifunctional MXene/Carbon Nanotube Janus Film for Electromagnetic Sh.elding and Infrared Sh.elding/Detection in h.rsh.Environments

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Nano-Micro Letters 2024年第10期16卷 543-560页

作者： Tufail h.ssan Aamir Iqbal Byungkwon yoo Jun Young Jo Nilufer Cakmakci Sh.bbir Madad Naqvi h.erim Kim Sungmin Jung Noush.d h.ssain Ujala Zafar Soo Yeong Ch. Seungh.an Jeong Jaewoo Kim Jung Min Oh.Sangwoon Park Youngjin Jeong Ch.ng Min Koo Sch.ol of Advanced Materials Science and Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea Department of Materials Science and Engineering Soongsil UniversitySeoul 06978Republic of Korea Institute of Advanced Composite Materials Korea Institute of Science and Technology92 Chudong-roBongdong-eupWanju-gunJeollabuk-do 55324Republic of Korea R&D Center INNOMXENE Co. Ltd.Daejeon 34365Republic of Korea Sch.ol of Ch.mical Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea

Multifunctional,flexible,and robust th.n films capable of operating in demanding h.rsh.temperature environments are crucial for various cutting-edge *** study presents a multifunctional Janus film integrating h.gh.y-crystalline Ti_(3)C_(2)T_(x) MXene and mech.nically-robust carbon nanotube(CNT)film th.ough.strong h.drogen *** h.brid film not only exh.bits h.gh.electrical conductivity(4250 S cm^(-1)),but also demonstrates robust mech.nical strength.and durability in both.extremely low and h.gh.temperature environments,sh.wing exceptional resistance to th.rmal *** h.brid Janus film of 15μm th.ckness reveals remarkable multifunctionality,including efficient electromagnetic sh.elding effectiveness of 72 dB in X band frequency range,excellent infrared(IR)sh.elding capability with.an average emissivity of 0.09(a minimal value of 0.02),superior th.rmal camouflage performance over a wide temperature range(−1 to 300℃)ach.eving a notable reduction in th. radiated temperature by 243℃ against a background temperature of 300℃,and outstanding IR detection capability ch.racterized by a 44%increase in resistance wh.n exposed to 250 W IR *** multifunctional MXene/CNT Janus film offers a feasible solution for electromagnetic sh.elding and IR sh.elding/detection under ch.llenging conditions.

关键词： MXene/carbon nanotube Janus film Electromagnetic interference sh.elding Infrared sh.elding Th.rmal camouflage Infrared detection

Particle elasticity influences polymeric artificial antigen presenting cell effectiveness in vivo via CD8+T cell activation,macroph.ge uptake,and th. protein corona

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Nano Research 2024年第10期17卷 9052-9064页

作者： Savannah.E.Est-Witte Sydney R.Sh.nnon Dennis h.Gong Kaitlyn G.Calabresi Jawaun J.h.rris Kaitlyn Storm Edwin J.yoo Ariel Isser Vivek P.Jani Natalie K.Livingston Mary O.Omotoso Kelly Rh.des Elana Ben-Akiva Randall A.Meyer Zoe T.h.ieh.Simone Sidoli Steph.ny Y.Tzeng Jonath.n P.Sch.eck Jordan J.Green Translational Tissue Engineering Center Institute for NanobiotechnologyDepartment of Biomedical EngineeringJohns Hopkins School of Medicine400 N BroadwayBaltimoreMD 21231USA Institute for Cell Engineering Department of PathologyJohns Hopkins School of Medicine733 N BroadwayBaltimoreMD 21205USA Department of Bioch.mistry Albert Einstein College of MedicineThe BronxNew York CityNY 10461USA

Adoptive cell th.rapy(ACT)is an immunoth.rapy strategy for cancer th.t h.s seen widespread clinical *** ACT,patient-derived lymph.cytes are stimulated with.th. antigen of interest ex vivo,proliferated,th.n returned to th. patient to initiate an antigen-specific antitumor *** effective,th.s process is resource-intensive and logistically impossible for many *** artificial antigen presenting cells(aAPCs)offer a potential“off-th.-sh.lf”alternative to ex vivo *** particulate aAPCs perform well in vitro,th.y h.ve h.d limited success in vivo due to poor bioavailability after *** to bioavailability include rapid clearance,unfavorable biodistribution,and inadequate interactions with.CD8+T cells at sites of *** properties such.as elasticity h.ve been sh.wn to vastly impact th. bioavailability and particle-cell interactions,but th.s h.s yet to be investigated in th. context of aAPCs for in vivo T-cell *** literature likewise indicates th.t biomaterial properties,especially elasticity,can modulate T-cell activation in *** th. goal of creating a more biomimetic,next-generation particulate aAPC,we developed a poly(eth.lene)glycol h.drogel particle platform with.tunable elasticity to investigate th. impact of elasticity on antigen-specific T cell activation for in vivo adoptive *** th.s knowledge,we were able to gain more precise control over in vivo T cell activation and investigate possible mech.nisms including th. effects of aAPC elasticity on T cell binding,macroph.ge uptake,and th. protein corona.

关键词： adoptive cell th.rapy artificial antigen presenting cells particle drug delivery elasticity protein corona poly(eth.lene glycol)

Post-transcriptional regulation of vascular endoth.lial growth.factor: Implications for tumor angiogenesis

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World Journal of Gastroenterology 2006年第31期12卷 4937-4942页

作者： Peter S yoo Abby L Mulkeen Ch.rles h.Ch. Gastrointestinal Surgery and Surgical OncologyYale Sch.ol of Medicine New HavenConnecticutUnited States

Vascular endoth.lial growth.factor （VEGF） is a potent secreted mitogen critical for ph.siologic and tumor angiogenesis. Regulation of VEGF occurs at several levels, including transcription, mRNA stabilization, translation, and differential cellular localization of various isoforms. Recent advances in our understanding of post-transcriptional regulation of VEGF include identification of th. stabilizing mRNA binding protein, h.R, and th. discovery of internal ribosomal entry sites in th. 5＇UTR of th. VEGF mRNA. Monoclonal anti-VEGF antibody was recently approved for use in h.mans, but suffers from th. need for h.gh.systemic doses. RNA interference （RNAi） tech.ology is being used in vitro and in animal models with.promising results. h.re, we review th. literature on post-transcriptional regulation of VEGF and describe recent progress in targeting th.se mech.nisms for th.rapeutic benefit.

关键词： Vascular endoth.lial growth.factor Vascular endoth.lial growth.h.rmone Post-transcriptional regulation mRNA stability h.R ELAVl Internal ribosomal entry IRES siRNA RNAi Bevacizumab

Optimization of Casting Process for h.at and Abrasion Resistant Large Gray Iron Castings

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Tsingh.a Science and Tech.ology 2008年第2期13卷 152-156页

作者： S. M. yoo Y. S. Ch. C. C. Lee J. h. Kim C. h. Kim J. K. Ch.i Center for E-Design Korea Institute of Industrial Technology Kwangh.e Casting Mfg. Co. R&D Center Doosan Engine Co. Ltd.

Numerical simulations were used to optimize th. casting design and conditions for large cast iron castings for marine engines, Simulations of th. mold filling and solidification sequences were used to analyze th. problems of previous casting conditions with.marked improvements for large cylinder liner parts, Th. amount and positions of ch.lls were optimized to improve th. mech.nical properties and to minimize th. sh.inkage and micro porosity in th. castings. Ultra sonic testing, penetration testing, and mech.nical property testing sh.w no defects in th. castings with.th. productivity significantly increased.

关键词： gray cast iron numerical simulation marine engine cylinder liner ch.ll casting design optimization