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Omni-functional simultaneous interfacial treatment for enh.ncing stability and outgassing suppression of lith.um-ion batteries

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Journal of Energy chemistry 2024年第7期94卷 677-687页

作者： Youbean Lee ch.njoo park Kyoungmin Min Kwangjin park Department of Mech.nical Engineering Gachon UniversityGyeonggi-do 13120Republic of Korea Department of Battery Engineering Gachon UniversityGyeonggi-do 13120Republic of Korea School of Mech.nical Engineering Soongsil UniversitySeoul 06978Republic of Korea

ni-rich layered oxides in lith.um-ion batteries h.ve problems with.gas generation and electrochemical performance reduction due to residual lith.um's reaction on th. surface with.th. *** address th.s issue,in th.s study,th. Acid solvent evaporation(AsE)meth.d h.s been proposed as a potential meth.d to remove residual lith.um wh.le promoting th. formation of a new LinO_(3)-derived coating layer on th. cath.de *** reduction of residual lith.um using th. ASE meth.d and th. construction of a LinO_(3)-derived coating layer suppresses gas evolution caused by th. side effects of th. electrolyte,improves electrochemical performance,and improves th.rmal stability by facilitating th. smooth.movement of lith.um ***,th. structural stability and resistance ch.nge due to th. LinO_(3)-derived coating layer effects is guaranteed th.ough.cycling and DCIR of th. pouch *** a result,compared to Pristine,th. capacity retention of coin cells increased by 8%after 100 cycles,and pouch cells increased by 25%after 160 *** addition,after cycling th. pouch cell,CO_(2) gas h.s significantly reduced by about 30%compared to Pristine using gas *** ASE meth.d effectively forms a robust LinO_(3)-derived coating layer on th. cath.de active material,wh.ch h.lps minimize electrolyte reactivity,suppress ,CO_(2) emissions,enh.nce surface structure stability,improve th.rmal stability,and improveoverallbatteryperformance.

关键词： Lith.um-ion batteries ni-rich.nCM Acid solvent evaporation LinO_(3)-derived coating Gasevolution

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An Investigation on Open-RAn Specifications:Use Cases,Security Th.eats,Requirements,Discussions

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 13-41页

作者： h.ejae park Tri-h.inguyen Laih.uk park Department of Computer Science and Engineering Seoul National University of Science and TechnologySeoul01811Republic of Korea Faculty of Information Technology School of TechnologyVan Lang UniversityHo Chi Minh City70000Vietnam

Th. emergence of various technologies such as terah.rtz communications,Reconfigurable Intelligent Surfaces(RIS),and AI-powered communication services will burden network operators with.rising infrastructure ***,th. Open Radio Access network(O-RAn)h.s been introduced as a solution for growing financial and operational burdens in Beyond 5G(B5G)and 6G networks.O-RAn promotes openness and intelligence to overcome th. limitations of traditional *** disaggregating conventional Base Band Units(BBUs)into O-RAn Distributed Units(O-DU)and O-RAn Centralized Units(O-CU),O-RAn offers greater flexibility for upgrades and network ***,th.s openness introduces new security challenges compared to traditional *** existing studies overlook th.se security requirements of th. O-RAn *** gain deeper insigh.s into th. O-RAn system and security,th.s paper first provides an overview of th. general O-RAn architecture and its diverse use cases relevant to B5G and 6G *** th.n delve into specifications of O-RAn security th.eats and requirements,aiming to mitigate security vulnerabilities *** providing a compreh.nsive understanding of O-RAn architecture,use cases,and security considerations,th.sworkserves as a valuable resource for future research in O-RAn and its security.

关键词： O-RAn architecture use cases security issues security requirements security discussions

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non-interleaved chiral metasurfaces and neural networks enh.nce th. spatial resolution of polarimetry

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Ligh.(Science & Applications) 2024年第3期13卷 396-398页

作者： Jaewon Jang Minsu park Yeonsang park Department of Ph.sics Chungnam National UniversityDaejeon 34134Korea Institute of Quantum Systems Chungnam National UniversityDaejeon 34134Korea

non-interleaved chiral metasurfaces for h.gh.spatial-resolution polarimetry are proposed and ***,a convolutional neural network is incorporated to analyze interferometric images with.th. polarization state of ligh.,an... 详细信息

关键词： parameters chiral resolution

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Environmentally adaptive resh.ping of plant ph.tomorph.genesis by karrikin and strigolactone signaling

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Journal of Integrative Plant Biology 2024年第5期66卷 865-882页

作者： Young-Joon park Bo Eun nam ch.ng-Mo park Department of Smart Farm Science Kyung Hee UniversityYongin 17104Korea Departmentof Biological Sciences Seoul National UniversitySeoul 08826Korea Department of chemistry Seoul National UniversitySeoul 08826Korea

Coordinated morph.genic adaptation of growing plants is critical for th.ir survival and propagation under fluctuating *** morph.genic responses to ligh. and warm temperatures,termed ph.tomorph.genesis and th.rmomorph.genesis,respectively,h.ve been extensively studied in recent *** ph.tomorph.genesis,plants actively resh.pe th.ir growth.and developmental patterns to cope with.ch.nges in ligh. ***,ph.tomorph.genesis is closely associated with.diverse growth.h.rmonal ***,accumulating evidence indicates th.t ligh.-directed morph.genesis is profoundly affected by two recently identified ph.tochemicals,karrikins(KARs)and strigolactones(SLs).KARs and SLs are structurally related butenolides acting as signaling molecules during a variety of developmental steps,including seed *** receptors and signaling mediators h.ve been identified,and associated working mech.nisms h.ve been explored using gene-deficient mutants in various plant *** particular interest is th.t th. KAR and SL signaling path.ays play important roles in environmental responses,among wh.ch th.ir linkages with.ph.tomorph.genesis are most compreh.nsively studied during seedling *** th.s review,we focus on h.w th. ph.tochemical and ligh. signals converge on th. optimization of morph.genic *** also discuss molecular mech.nisms underlying th. signaling crosstalks with.an aim of developing potential ways to improve crop productivity under climate ch.nges.

关键词： karrikins morph.genic adaptation ph.tomorph.genesis seedling establish.ent strigolactones

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Synergistically coupling of ni–Fe LDh.arrays with.h.llow Co–Mo sulfide nanotriangles for h.gh.y efficient overall water splitting

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Rare Metals 2024年第2期43卷 522-532页

作者： Yun Jae Lee Seung-Keun park Department of Advanced Materials Engineering Chung-Ang UniversityAnseongGyeonggi-do17546Republic of Korea Department of Intelligent Energy and Industry Chung-Ang University84 Heukseok-ro Dongjak-guSeoul06974Republic of Korea Western Seoul Center Korea Basic Science Institute150 Bugahyeon-roSeodaemun-guSeoul03759Republic of Korea

Developing bifunctional catalysts th.t can catalyze both.oxygen evolution reaction(OER)and h.drogen evolution reaction(h.R)is pivotal to commercializing large-scale water ***,a novel h.llow nanotriangle composed of niFe LDh.CoMoS_(x) h.terojunction(h.CMSx@niFe LDh.is proposed as a h.gh.y efficient bifunctional electrocatalyst for both.OER and *** fabricate a h.terojunction system,ultra-th.n nickel–iron layered double h.droxide(niFe LDh.nanosh.ets are uniformly electrodeposited onto a metal–organic framework-derived h.llow CoMoS_(x) *** strong coupling of CoMoS_(x) and niFe LDh.catalysts forms th. intimate h.terojunction interfaces to facilitate interfacial charge transfer,wh.ch is favorable to enh.nce th. bifunctional catalytic ***,th. large void of CoMoS_(x) nanotriangles and interconnected ultra-th.n niFe LDh.nanosh.ets result in good electrolyte penetration and gas ***,th. as-prepared h.CMSx@niFe LDh.on nickel foam(nF)exh.bits an impressive catalytic activity and durability for OER and h.R activities,delivering a current density of 100 mA·cm^(−2) at th. small overpotentials of 214 and 299 mV in OER and h.R,***,h.CMSx@niFe LDh.nF proves to be an effective electrode for an alkaline electrolyzer,as a voltage of only 1.99 V is enough.to achieve a current density voltage of only 1.99 V is enough.to achieve a current density of 400 mA·cm^(−2) with.no degradation in performance over 50 h.

关键词： Overall water splitting Metal-organic framework Molybdenum sulfide Layered double h.droxide h.terojunction

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novel n-doped multich.nnel carbon nanofiber architecture with.porous CoS nanoprisms for h.gh.performance potassium-ion batteries

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Rare Metals 2024年第3期43卷 971-983页

作者： Jae Bong Lim Seung-Keun park Department of Advanced Materials Engineering Chung-Ang UniversityGyeonggi-do17546Republic of Korea Department of Intelligence Energy and Industry Chung-Ang UniversitySeoul06974Republic of Korea Western Seoul Center Korea Basic Science InstituteSeoul03759Republic of Korea

Potassium-ion batteries(PIBs)h.ve gained significant attention as an alternative to lith.um-ion batteries(LIBs)due to th. abundance of potassium(K)and low ***,th. difficulty in finding appropriate electrode materials th.t can efficiently store th. larger K ions h.s h.ndered th.ir practical ***,we report a novel anode material,n-doped multich.nnel carbon nanofibers embedded with.porous CoS nanoprisms(CSP@nMCnF),for h.gh.performance *** CSP@nMCnF was synth.sized using a two-step strategy comprising of th. electrospinning of Co acetate h.droxide nanoprism/binary polymer blend and a subsequent h.at *** porous CoS nanoprisms with.an anisotropic morph.logy were well aligned along th. length.axis of th. n-doped multich.nnel carbon nanofibers,th.s ensuring th.ir structural stability during th. repeated charge-discharge *** addition,numerous pores facilitated th. transport of electrons and ***,th. CSP@nMCnF anode exh.bited excellent electrochemical performance,delivering a h.gh.specific capacity of 368 mAh.g^(-1)at 0.5 A·g^(-1)after 200 cycles and excellent rate capability(232 mAh.g^(-1)at 2.0 A·g^(-1)).

关键词： K-ion batteries Cobalt sulfide Multich.nnel structured composite Electrospinning nanoprism Porous structure

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Investigation of Inside-Out Tracking Meth.ds for Six Degrees of Freedom Pose Estimation of a Smartph.ne in Augmented Reality

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Computers, Materials & Continua 2024年第5期79卷 3047-3065页

作者： ch.nh. park Takefumi Ogawa Graduate School of Engineering The University of TokyoTokyo113-0033Japan Information Technology Center The University of TokyoChiba277-0882Japan

Six degrees of freedom(6DoF)input interfaces are essential formanipulating virtual objects th.ough.translation or rotation in th.ee-dimensional(3D)space.A traditional outside-in tracking controller requires th. installation of expensive h.rdware in *** inside-out tracking controllers h.ve been proposed,th.y often suffer from limitations such as interaction limited to th. tracking range of th. sensor(e.g.,a sensor on th. h.ad-mounted display(h.D))or th. need for pose value modification to function as an input interface(e.g.,a sensor on th. controller).Th.s study investigates 6DoF pose estimation meth.ds with.ut restricting th. tracking range,using a smartph.ne as a controller in augmented reality(AR)*** approach involves proposing meth.ds for estimating th. initial pose of th. controller and correcting th. pose using an inside-out tracking *** addition,seven pose estimation algorith.s were presented as candidates depending on th. tracking range of th. device sensor,th. tracking meth.d(e.g.,marker recognition,visual-inertial odometry(VIO)),and wh.th.r modification of th. initial pose is *** two experiments(discrete and continuous data),th. performance of th. algorith.s was *** results demonstrate enh.nced final pose accuracy achieved by correcting th. initial ***,th. importance of selecting th. tracking algorith. based on th. tracking range of th. devices and th. actual input value of th. 3D interaction was emph.sized.

关键词： Smartph.ne inside-out tracking 6DoF pose 3D interaction augmented reality

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Erlotinib combination with.a mitoch.ndria-targeted ubiquinone effectively suppresses pancreatic cancer cell survival

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World Journal of Gastroenterology 2024年第7期30卷 714-726页

作者： Pui-Yin Leung Wenjing ch.n Anissa n Sari Poojith. Sitaram Pui-Kei Wu Susan Tsai Jong-In park Department of Biochemistry Medical College of WisconsinMilwaukeeWI 53226United States Department of Surgery Medical College of WisconsinMilwaukeeWI 53226United States

BACKGROUnD Pancreatic cancer is a leading cause of cancer-related *** activity of th. epidermal growth.factor receptor(EGFR)is often observed in pancreatic cancer,and th. small molecule EGFR inh.bitor erlotinib h.s been approved for pancreatic cancer th.rapy by th. food and drug ***,erlotinib alone is ineffective and sh.uld be combined with.oth.r drugs to improve th.rapeutic *** previously sh.wed th.t certain receptor tyrosine kinase inh.bitors can increase mitoch.ndrial membrane potential(Δψm),facilitate tumor cell uptake ofΔψm-sensitive agents,disrupt mitoch.ndrial h.meostasis,and subsequently trigger tumor cell *** h.s not been tested for th.s *** To determine wh.th.r erlotinib can elevateΔψm and increase tumor cell uptake ofΔψm-sensitive agents,subsequently triggering tumor cell ***Δψm-sensitive fluorescent dye was used to determine h.w erlotinib affectsΔψm in pancreatic adenocarcinoma(PDAC)cell *** viability of conventional and patient-derived primary PDAC cell lines in 2D-and 3D cultures was measured after treating cells sequentially with.erlotinib and mitoch.ndria-targeted ubiquinone(MitoQ),aΔψm-sensitive *** synergy between erlotinib and MitoQ was th.n analyzed using SynergyFinder *** preclinical efficacy of th. twodrug combination was determined using immune-compromised nude mice bearing PDAC cell line *** Erlotinib elevatedΔψm in PDAC cells,facilitating tumor cell uptake and mitoch.ndrial enrichment ofΔψm-sensitive *** triggered caspase-dependent apoptosis in PDAC cells in culture if used at h.gh.doses,wh.le erlotinib pretreatment potentiated low doses of *** suggested th.t th.se drugs synergistically induced tumor cell *** with.in vitro data,erlotinib and MitoQ combination suppressed h.man PDAC cell line xenografts in mice more effectively th.n single treatments of each *** Our findings suggest th.

关键词： Pancreatic cancer Erlotinib Mitoch.ndria-targeted ubiquinone Mitoch.ndria Combination th.rapy

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A compreh.nsive review on th. resynth.sis of ternary cath.de active materials from th. leachate of Li-ion batteries

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Journal of Energy chemistry 2024年第8期95卷 446-463,I0010页

作者： Dongwoo Kim h.eoncheol Joo ch.nmin Kim Seoa Kim Wan-Yi Kim Sangwoo h.n Joongkil park Soyeon park h.echul Jung Sangh.uk park Kyungjung Kwon Department of Energy and Mineral Resources Engineering Sejong UniversitySeoul 05006Republic of Korea LIB Recycling Research Group LIB Materials R&D CenterPOSCO HoldingsPohang 37859Republic of Korea Department of Future Energy Convergence Seoul National University of Science&Technology232 Gongreung-roNowon-guSeoul 01811Republic of Korea Autonomous Intelligent Unmanned Flying Veh.cles Institute Sejong UniversitySeoul 05006Republic of Korea

Th.s review h.gh.igh.s th. importance of recovering valuable metals from spent Li-ion battery(LIB)cath.des th.ough.th. resynth.sis of cath.de active materials(CAMs).Th. resynth.sis process of CAMs,a promising recycling meth.d th.t directly produces CAM precursors from LIB leachate,is *** process encompasses six key steps,including pretreatment,leach.ng,purification,adjustment of metal concentrations,precursor synth.sis,and *** review also investigates th. potential introduction of impurity elements during CAM resynth.sis and provides tolerance levels for th.se impurities based on th.rough.reference ***,it addresses challenges related to th. commercialization of th. resynth.sis ***,th.s review represents th. first compreh.nsive assessment of CAM resynth.sis,including th. systematic evaluation of 12 impurity elements(Fe,Li,Al,Cu,C,P,F,na,Cl,S,Mg,and Zn).Overall,th.s compreh.nsive review is poised to support th. commercial development of resynth.sized CAMs by offering valuable guidelines for managing impurities and streamlining th. purification process.

关键词： Li-ion battery Recycling Resynth.sis Leachate Impurity

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Evaluation of th. coefficient of lateral stress at rest of granular materials under repetitive loading conditions

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Journal of Rock Mech.nics and Geotechnical Engineering 2024年第5期16卷 1709-1721页

作者： h.erym h.n h.unwook choo Jungh.e park Department of Civil and Environmental Engineering Hanyang UniversitySeoul04763South Korea Department of Civil and Environmental Engineering Incheon National UniversityIncheon22012South Korea

Alth.ugh.th. internal stress state of soils can be affected by repetitive loading,th.re are few studies evaluating th. lateral stress(or K_(0))of soils under repetitive *** study investigates th. ch.nges in K_(0) and directional sh.ar wave velocity(V_(s))in samples of two granular materials with.different particle sh.pes during repetitive loading.A modified oedometer cell equipped with.bender elements and a diaph.agm transducer was developed to measure th. variations in th. lateral stress and th. sh.ar wave velocity,under repetitive loading on th. loading and unloading *** study produced th. following results:(1)Repetitive loading on th. loading path.resulted in an increase in th. K_(0) of test samples as a function of cyclic loading number(i),and(2)Repetitive loading on th. unloading path.resulted in a decrease in K_(0) according to *** sh.ar wave velocity ratio(i.e.V_(s)(h.)/V_(s)(Vh.,wh.re th. first and second letters in parenth.ses corresponds to th. directions of wave propagation and particle motion,respectively,and V and h.corresponds to th. vertical and h.rizontal directions,respectively)according to i supports th. experimental observations of th.s ***,wh.n th. tested material was in ligh.ly over-consolidated state,th.re was an increase in K_(0) during repetitive loading,indicating th.t it was th. initial K_(0),rath.r th.n th. loading path.wh.ch is responsible for th. ch.nge in K_(0).Th. power model can capture th. variation in th. K_(0) of samples according to ***,th. K_(0)=1 line acts as th. boundary between th. increase and decrease in K_(0) under repetitive loading.

关键词： Coefficient of lateral stress at rest Repetitive loading Granular materials Sh.ar wave velocity Stiffness anisotropy

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