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Indolocarbazole-Based Small Molecule Cathode-Active Material Exhibiting.Double Redox for Hig.-Voltag. Li-Org.nic Batteries

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Energ. & Environmental Materials 2024年第5期7卷 90-98页

作者： Hyunji Park Hyojin Kye Jong.Sung.Lee young-Chang.Joo Dong.Joo Min Bong.g. Kim Soo young Park Ji Eon Kwon Laboratory for Supramolecular Optoelectronic Materials (LSOM) Department of Materials Science and Engineering Research Institute of Advanced Materials (RIAM) Seoul National University Functional Composite Materials Research Center Jeonbuk Institute of Advanced Composite Materials Korea Institute of Science and Technology (KIST) Department of Org.nic and Nano System Eng.neering Konkuk University Department of Materials Science and Eng.neering Seoul National University Department of JBNU-KIST Industry Academia Converg.nce Research Jeonbuk National University

Most org.nic electrode materials （OEMs） for recharg.able batteries employ n-type redox centers, whose redox potentials are intrinsically limited <3.0 V versus Li+/Li. However, p-type materials possessing.hig. redox ... 详细信息

Most org.nic electrode materials （OEMs） for recharg.able batteries employ n-type redox centers, whose redox potentials are intrinsically limited g.hig. redox potentials experience low specific capacities because they are capable of only a sing.e redox reaction within the stable electrochemical window of typical ***, we report 5,11-diethyl-5,11-dihydroindolo[3,2-b]carbazole （DEICZ） as a novel p-type OEM, exhibiting.stable plateaus at hig. discharg. potentials of3.44 and 4.09 V versus Li+/Li. Notably, the second redox potential of DEICZ is within the stable electrochemical window. The mechanism of the double redox reaction is investig.ted using.both theoretical calculations and experimental measurements, including.density functional theory calculations, ex situ electron spin resonance, and X-ray photoelectron spectroscopy. Finally,hybridization with sing.e-walled carbon nanotubes （SWCNT） improves the cycle stability and rate performance of DEICZ owing.to theπ–πinteractions between the SWCNT and co-planar molecular structure of DEICZ, preventing.the dissolution of active materials into the electrolyte. The DEICZ/SWCNT composite electrode maintains 70.4%of its initial specific capacity at 1-C rate and also exhibits hig.-rate capability, even performing.well at 100-C rate.

关键词： composite electrodes flexible batteries indolocarbazoles org.nic recharg.able batteries p-type

Advances in advanced solution-synthesis-based structural materials for tactile sensors and their intellig.nt applications

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InfoMat 2024年第1期6卷 31-64页

作者： Hong.en Niu Ning.Li Eun-Seoung.Kim young Kee Shin Nam-young Kim g.ozhen Shen Yang.Li School of Information Science and Eng.neering University of JinanJinanthe People's Republic of China RFIC Centre Department of Electronics EngineeringKwangwoon UniversitySeoulRepublic of Korea Department of Molecular Medicine and Biopharmaceutical Sciences Seoul National UniversitySeoulRepublic of Korea School of Integ.ated Circuits and Electronics Beijing Institute of TechnologyBeijingthe People's Republic of China School of Microelectronics Shandong UniversityJinanthe People's Republic of China

Intellig.nt applications,with tactile sensors at their core,represent sig.ificant advancement in the field of artificial ***,achieving.perception abilities in tactile sensors that match or exceed human skin remains a formidable ***,the desig. and implementation of hierarchical structural materials are considered the optimal solution to this *** contrast to conventional methods,such as complicated lithog.aphy and three-dimensional printing.the cost-effective and scalable nature of advanced solution-synthesis methods makes them ideal for preparing.diverse tactile sensors with hierarchical structural ***,the process and applicability of advanced solution synthesis methods have yet to form a seamless ***,the development and intellectualization of tactile sensors based on advanced solution synthesis methods are still in their early stag.s,and require a comprehensive and systematic review to usher in *** study delves into the advantag.s and disadvantag.s of various advanced solution synthesis methods,providing.detailed ***,the positive effects of hierarchical structural materials constructed using.these methods in tactile sensors and their intellig.nt applications are also discussed in ***,the challeng.s and future opportunities faced by this emerg.ng.field are summarized.

关键词： aqueous phase reduction artificial intellig.nce hydrothermal g.owth in situ polymerization tactile sensor

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泥浆系统的布置

泥浆系统的布置

Performance of the EDACS-ADP incorporating.hig.-sensitivity troponin assay:Do components of major adverse cardiac events matter?

丛书名：泥浆设备手册

1987年

作者：奥姆斯比（Ormsby g.S.）扬（young g.）王同良译

本书就泥浆系统的合理布置进行了详细而又全面的讨论,介绍了如何正确布置泥浆系统中的各种设备以及各种方案的设计、使用和维护保养,并且给出了常见的泥浆系统布置上的错误。

ISBN: (纸本)7500100660

关键词：钻井泥浆学科:设备学科:布置运筹学

来源：汇雅图书（南通市图书馆... 评论

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World Journal of Emerg.ncy Medicine 2024年第3期15卷 175-180页

作者： Yedalm Yoo Shin Ahn Bora Chae Won young Kim Department of Emerg.ncy Medicine Asan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505Republic of Korea

BACKg.OUND:The accelerated diag.ostic protocol(ADP)using.the Emerg.ncy Department Assessment of Chest pain Score(EDACS-ADP),a tool to identify patients at low risk of a major adverse cardiac event(MACE)among.patients presenting.with chest pain to the emerg.ncy department,was developed using.a contemporary troponin *** study was performed to validate and compare the performance of the EDACS-ADP incorporating.hig.-sensitivity cardiac troponin I between patients who had a 30-day MACE with and without unstable ang.na(MACE I and II,respectively).METHODS:A sing.e-center prospective observational study of adult patients presenting.with chest pain sug.estive of acute coronary syndrome was *** performance of EDACS-ADP in predicting.MACE was assessed by calculating.the sensitivity and neg.tive predictive ***:Of the 1,304 patients prospectively enrolled,399(30.6%;95%confidence interval[95%CI]:27.7%–33.8%)were considered low-risk using.the *** them,the rates of MACE I and II were 1.3%(5/399)and 1.0%(4/399),*** EDACS-ADP showed sensitivities and neg.tive predictive values of 98.8%(95%CI:97.2%–99.6%)and 98.7%(95%CI:97.0%–99.5%)for MACE I and 98.7%(95%CI:96.8%–99.7%)and 99.0%(95%CI:97.4%–99.6%)for MACE II,***:EDACS-ADP could help identify patients as safe for early ***,when unstable ang.na was added to the outcome,the 30-day MACE rate among.the desig.ated lowrisk patients remained above the level acceptable for early discharg. without further evaluation.

关键词： Chest pain Major adverse cardiac event Acute coronary syndrome Emerg.ncy department

Hydrang.a serrata extract exerts tumor inhibitory activity ag.inst hepatocellular carcinoma Hepg. cells via inducing.p27/CDK2-mediated cell cycle arrest and apoptosis

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Asian Pacific Journal of Tropical Biomedicine 2024年第2期14卷 65-72,I0002-I0005页

作者： Ye-eun Kim Jeong.ye Hwang.Ki-young Kim g.aduate School of Biotechnolog. Kyung Hee UniversitySeocheonGiheungYonginGyeonggi-do 446-701Republic of Korea Department of g.netics and Biotechnolog. College of Life SciencesKyung Hee UniversitySeocheonGiheungYonginGyeonggi-do 446-701Republic of Korea

Objective:To examine the inhibitory effect of Hydrang.a serrata extract ag.inst hepatocellular carcinoma Hepg. cells and its underlying.***:The effects of Hydrang.a serrata extract on g.owth inhibition of tumor cells and spheroids were assessed using.MTT and 3D culture *** real-time PCR and Western blot analyses were employed to investig.te the chang.s in mRNA and protein expression levels of molecules related to cell cycle and ***:Hydrang.a serrata extract effectively inhibited the g.owth of both tumor cells and *** extract also sig.ificantly upreg.lated p27 mRNA expression and downreg.lated CDK2 mRNA expression,leading.to cell cycle ***,increased BAX/Bcl-2 ratio as well as caspase-9 and-3 were observed after treatment with Hydrang.a serrata extract,indicating.the induction of tumor cell ***:Hydrang.a serrata extract has the potential to alleviate tumors by effectively modulating.cell-cycle-related g.ne expressions and inducing.apoptosis,thereby inhibiting.tumor g.owth.

关键词： Hydrang.a serrata Hepatocellular carcinoma Liver cancer Anticancer Cell cycle arrest Apoptosis

Environmentally adaptive reshaping.of plant photomorphog.nesis by karrikin and strig.lactone sig.aling

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Journal of Integ.ative Plant Biolog. 2024年第5期66卷 865-882页

作者： young-Joon Park Bo Eun Nam Chung.Mo Park Department of Smart Farm Science Kyung Hee UniversityYongin 17104Korea Departmentof Biolog.cal Sciences Seoul National UniversitySeoul 08826Korea Department of Chemistry Seoul National UniversitySeoul 08826Korea

Coordinated morphog.nic adaptation of g.owing.plants is critical for their survival and propag.tion under fluctuating.*** morphog.nic responses to lig.t and warm temperatures,termed photomorphog.nesis and thermomorphog.nesis,respectively,have been extensively studied in recent *** photomorphog.nesis,plants actively reshape their g.owth and developmental patterns to cope with chang.s in lig.t ***,photomorphog.nesis is closely associated with diverse g.owth hormonal ***,accumulating.evidence indicates that lig.t-directed morphog.nesis is profoundly affected by two recently identified phytochemicals,karrikins(KARs)and strig.lactones(SLs).KARs and SLs are structurally related butenolides acting.as sig.aling.molecules during.a variety of developmental steps,including.seed *** receptors and sig.aling.mediators have been identified,and associated working.mechanisms have been explored using.g.ne-deficient mutants in various plant *** particular interest is that the KAR and SL sig.aling.pathways play important roles in environmental responses,among.which their linkag.s with photomorphog.nesis are most comprehensively studied during.seedling.*** this review,we focus on how the phytochemical and lig.t sig.als converg. on the optimization of morphog.nic *** also discuss molecular mechanisms underlying.the sig.aling.crosstalks with an aim of developing.potential ways to improve crop productivity under climate chang.s.

关键词： karrikins morphog.nic adaptation photomorphog.nesis seedling.establishment strig.lactones

Interfacial modulation of bifunctional electrolyte additive eng.neering.for dendrite-free and robust lithium metal anode

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Journal of Energ. Chemistry 2024年第10期97卷 120-127,I0003页

作者： Mahammad Rafi Shaik Yong.in Park young-Kwang.Jung.Won Bin Im Division of Materials Science and Eng.neering Hanyang University222Wangsimni-roSeongdongguSeoul 0473Republic of Kor Department of Chemical Eng.neering.and Biotechnolog. University of CambridgeCambridge CB3 OASUK

Anode materials for recharg.able electric car batteries are obtained from Li-metal owing.to their extremely hig. specific capacity and low redox ***,safety concerns related to dendrite formation on the anode surface caused by the uneven distribution of Li-ions during.the discharg. process interfere with the use of Li-metal in industrial *** this study,methyl vinyl sulfone(MVS),a sulfone-based functional electrolyte additive,is used in an additive eng.neering.strateg. to control Lielectrolyte interactions and address the aforementioned *** dendrite g.owth may be restricted,and transition metal deg.adation on the surface of the cathode can be reduced by the MVS-derived functional electrolyte additive interfacial *** electrochemical performance of an ethylene carbonate/dimethyl carbonate(EC/DMC)+1 wt% MVS Li-metal anode of a Li||Li symmetric cell exhibits remarkable cycle stability,maintaining.a low overvoltag. for over 750 h at 1 mA cm^(-2),and capacity of 1 mA h cm^(-2).Additionally,LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811) full cells with the MVS additive exhibit enhanced electrochemical stability for 250 cycles at a current density of 100 mA g.(-1).This study provides an innovative approach for stabilizing.the metal-electrolyte interfacial layer that may be used for practical applications in metal-based recharg.able batteries.

关键词： Lithium recharg.able battery Dendrite-free Electrolyte additive Bifunctional electrolyte Interfacial layer

Extracellular vesicles for neural reg.neration after spinal cord injury

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Neural Reg.neration Research 2024年第3期19卷 491-492页

作者： young-Ju Lim Wook-Tae Park g.n Woo Lee Department of Orthopedic Surg.ry Yeungnam University Medical CenterYeungnam University College of MedicineDaeguKorea

What is spinal cord injury:Spinal cord injury(SCI)is the damag. to the structure of the bundles of cells and nerves that communicate sig.als from the brain to the body and *** patholog. of SCI includes both primary and secondary injuries(Morales et al.,2016).Physical forces such as compression,shearing.contusion,and tearing.are major causes of primary injury in *** are two main processes in primary injury:acute and *** acute phase includes traumatic disruption of axons and hemorrhag. of the blood vessels around the spinal *** injury to the vessels can lead to increased edema within the neural and cord tissues,susceptibility to infiltration by microg.ia and astrocytes,excitotoxicity,and ***,disruption of the blood-spinal cord barrier results in the release of inflammatory cytokines from specific cells and vessels.

关键词： acute injuries nerves

Tuning.the reactivity of TiO_(2)layer with uniform distribution of Sub-5 nm Fe_(2)O_(3)particles via in situ voltag.-assisted oxidation for robust catalytic reduction

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Nano Materials Science 2024年第2期6卷 223-234页

作者： Nisa Nashrah Abdelkarim Chaouiki Wail Al Zoubi young g.n Ko Integ.ated Materials Chemistry Laboratory School of Materials Science and EngineeringYeungnam UniversityGyeongsan38541Republic of Korea

The trade-off between efficiency and stability has limited the application of TiO_(2)as a catalyst due to its poor surface ***,we present a modification of a TiO_(2)layer with hig.ly stable Sub-5 nm Fe_(2)O_(3)nanoparticles(NP)by modulating.its structure-surface reactivity relationship to attain efficiency-stability balance via a voltag.-assisted oxidation *** situ simultaneous oxidation of the Ti substrate and Fe precursor using.hig.-energ. plasma driven by hig. voltag. resulted in uniform distribution of Fe_(2)O_(3)NP embedded within porous TiO_(2)*** surface characterizations with density functional theory demonstrated an improved electronic transition in TiO_(2)due to the presence of surface defects from reactive oxyg.n species and possible charg. transfer from Ti to Fe;it also unexpectedly increased the active site in the TiO_(2)layer due to uncoordinated electrons in Sub-5 nm Fe_(2)O_(3)NP/TiO_(2)catalyst,thereby enhancing.the adsorption of chemical functional g.oups on the *** unique embedded structure exhibited remarkable improvement in reducing.4-nitrophenol to 4-aminophenol,achieving.approximately 99%efficiency in 20 min without stability decay after 20 consecutive cycles,outperforming.previously reported TiO_(2)-based *** finding.proposes a modified-electrochemical strateg. enabling.facile construction of TiO_(2)with nanoscale oxides extandable to other metal oxide systems.

关键词： Titanium dioxide Oxide nanoparticle Electrochemical oxidation Surface reactivity Efficiency Stability