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Stoichiometric Ti_(3)C_(2)T_(x)Coating for Inhibiting Dendrite Growth in Anode-Free Lithium Metal Batteries

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

作者： Xiangrong Zeng Manmatha Mahato Woong Oh Hyunjoon Yoo Van Hiep Nguyen Saewoong Oh Geetha Valurouthu Soon-Ki Jeong Chi Won Ahn Yury Gogotsi il-kwon Oh National Creative Research Initiative for Functionally Antagonistic Nano-Engineering Department of Mechanical EngineeringKorea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Korea Department of Materials Science&Engineering and A.J.Drexel Nanomaterials InstituteDrexel UniversityPhiladelphiaPennsylvania 19104USA Department of Energy Engineering Soonchunhyang University22Soonchunhyang-roSinchang-myeonAsan-siChungcheongnam-do 31538Korea National Nanofab Center(NNFC) Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Korea

Lithium metal batteries(LMBs)and anode-free LMBs(AFLMBs)present a solution to the need for batteries with a significantly superior theoretical energy ***,their adoption is hindered by low Coulombic efficiency(CE)and rapid capacity fading,primarily due to the formation of unstable solid electrolyte interphase(SEI)layer and Li dendrite growth as a result of uneven Li ***,we report on the use of a stoichiometric Ti_(3)C_(2)T_(x)(S-Ti_(3)C_(2)T_(x))MXene coating on the copper current collector to enhance the cyclic stability of an anode-free lithium metal *** S-Ti_(3)C_(2)T_(x)coating provides abundant nucleation sites,thereby lowering the overpotential for Li nucleation,and promoting uniform Li ***,the fluorine(-F)termination of S-Ti_(3)C_(2)T_(x)participates in the SEI formation,producing a LiF-rich SEI layer,vital for stabilizing the SEI and improving cycle *** equipped with S-Ti_(3)C_(2)T_(x)@Cu current collectors displayed reduced Li consumption during stable SEI formation,resulting in a significant decrease in capacity *** with S-Ti_(3)C_(2)T_(x)@Cu current collectors achieved a high initial capacity density of 4.2 mAh cm^(-2),70.9%capacity retention after 50 cycles,and an average CE of 98.19%in 100 *** innovative application of MXenes in the energy field offers a promising strategy to enhance the performance of AFLMBs and could potentially accelerate their commercial adoption.

关键词： anode-free lithium metal batteries stoichiometric MXene solid electrolyte interphase surface terminations

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Silver-palladium alloy deposited by DC magnetron sputtering method as lubricant for high temperature application

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中国有色金属学会会刊：英文版 2009年第4期19卷 1001-1004页

作者： Jung-Dae kwon Sung-Hun LEE Koo-Hyun LEE Jong-Joo RHA Kee-Seok NAM Sang-Hoon CHOI Dong-Min LEE Dong-il KIM Materials Processing Division Korea Institute of Materials Science Technology Research & Development Institute Korea Plant Service and Engineering

The silver-palladium(Ag-Pd) alloy coating as a solid lubricant was investigated for its application to the high temperature stud bolts used in nuclear power plants.A hex bolt sample was prepared in the following steps:1) bolt surface treatment using alumina grit blasting for cleaning and increasing the surface area;2) nickel(Ni) film coating as a glue layer on the surface of the bolt;and 3) Ag-Pd alloy coating on the Ni *** films were deposited by using a direct current(DC) magnetron sputtering *** thickness and composition of the Ag-Pd alloy film have effect on the friction coefficient,which was determined using axial force measurement.A 500 nm-thick Ag-Pd(80-20,molar ratio) alloy film has the lowest friction coefficient of 0.109.A cyclic test was conducted to evaluate the durability of bolts coated with either the Ag-Pd(80-20) alloy film or N-5000 *** a cycle,the bolts were inserted into a block using a torque wrench,which was followed by heating and *** only one cycle,it was not possible to remove the bolts coated with the N-5000 oil from the ***,the bolts coated with the Ag-Pd(80-20) alloy could be easily removed up until 15 cycles.

关键词：银钯合金直流电高温润滑剂沉积磁控溅射法固体润滑涂层高温螺栓

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Microenvironmental regulation of stem cells injected in the area at risk of neurodegenerative diseases

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BIOCELL 2022年第10期46卷 2231-2234页

作者： JU HYUNG LEE il-kwon KIM SANG WOO KIM SOYEON LIM SEAHYOUNG LEE KI-CHUL HWANG BYEONG-WOOK SONG Graduate Program of Biomedical Engineering Yonsei UniversitySeoul03722Korea Institute for Bio-Medical Convergence College of MedicineCatholic Kwandong UniversityGangwon-do25601Korea Department for Medical Science College of MedicineCatholic Kwandong UniversityGangwon-do25601Korea

The complex mechanism of degenerative diseases and the non-specific modulation of regenerative targets aretopics that need to be elucidated in order to advance the use of stem cells in improvement of neurodegenerative *** pre-transplantation through post-transplantation, there are many changes in the conditions, both inside andoutside of the stem cells that have not been carefully considered. This has hindered development in the field of celltherapy and regeneration. This viewpoint highlights the potential implications of intracellular and extracellularalterations of stem cells in transplanted areas at risk of neurodegenerative disease.

关键词： Cell therapy Microenvironment Neurodegenerative disease Stem cells

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Reconstruction of Rabbit Corneal Layer Composed of Corneal Fibroblasts and Corneal Epithelium on the Lyophilized Amniotic Membrane

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Chemical Research in Chinese Universities 2006年第2期22卷 150-156页

作者： AHN Jae-il JANG In-keun YOON Mun-young SEO Young-kwon YOON Hee-hun KIN Jae-chan SONG Kye-yong YANG Eun-kyung PARK Jung-keug Department of Chemical and Biochemical Engineering Dongguk University Seoul Korea Department of Ophthalmology Chung-Ang University Hospital Seoul Korea Department of Pathology College of Medicine Chung-Ang University Seoul Korea R & D Center Bioland Ltd. Chun-An Korea

Many researchers have employed the cryopreserved amniotic membrane（CAM） and corneal epithelial cells in the treatment of a severely damaged burned cornea, with corneal epithelial cells cultured on an amniotic membrane （AM）. The lyophilized amniotic membrane（LAM） has a higher graft take and a longer shelf life; it is easier to store and safer because of gamma irradiation. Two Teflon rings（ Ahn＇s supporter） were made for culturing the cells on the LAM, and were then used to support the LAM. To reconstruct a corneal layer composed of corneal fibroblasts and epithelium, the corneal fibroblasts were first cultivated on the stromal side of LAM for five days, foUowed by epithelial cells culture on the epithelial side, by using the air-liquid interface culture. The reconstructed corneal layer composed of corneal fibroblasts and corneal epithelial cells has a much healthier basal layer of corneal epithelium than the reconstructed corneal epithelium, which was got by using only corneal epithelial cells, and resembles the epithelium of normal corneas, without the horny layer. Thus, the reconstruction of the corneal layer by using a LAM is considered to be a good in vitro model, not only for its application in toxicological test kits, but also for transplantation in patients with a severely damaged cornea.

关键词： Lyophilized amniotic membrane Corneal layer Corneal fibroblast Corneal epithelium

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Quantitative detection of citrate for early stage diagnosing of prostate cancer:Discriminating normal to cancer in prostate tissues

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Chinese Chemical Letters 2024年第2期35卷 501-506页

作者： Selvaraj Muthusamy Kanagaraj Rajalakshmi Palanisamy Kannan Yun-Sik Nam Dongwei Zhu Yeonggil Seo Jong-Won Song Dong Nyoung Heo il Keun kwon Yuanguo Xu School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China College of Biological Chemical Sciences and EngineeringJiaxing UniversityJiaxing 314001China Advanced Analysis Center Korea Institute of Science & TechnologySeongbuk-guSeoul02792Republic of Korea School of Medicine Jiangsu UniversityZhenjiang 212013China Department of Chemistry Education Daegu UniversityGyeongsan-siGyeongsangbuk-do 38453Republic of Korea Department of Dental Materials School of DentistryKyung Hee UniversitySeoulRepublic of Korea

Prostate cancer(PC)biomarker-citrate detection is clinically important to diagnose PC in early *** iodide(Q)conjugated indole-phenylboronic acid(IB)was designed as a red-emissive QIB probe for the detection of citrate through Lewis acid-base reaction and intramolecular charge transfer(ICT)sensing *** acid acts as Lewis acid as well as citrate(Lewis base)recognition *** probe reacted with citrate,showing enhanced red *** the probe has excellent water solubility and great biocompatibility,practical application in biological systems is *** was monitored precisely in the mitochondria organelle(in vitro)of living cells with a positive charge on ***,endogenous(in situ)citrate was detected quantitatively to discriminate non-cancerous and PC mice,observed strong and lower(negligible)emission intensity on non-cancerous and cancerous prostate tissues,***,the concentration of citrate is higher in healthy prostate compared with PC ***,the analysis of sliced prostate tissues can give PC-related information for clinical diagnosis to prevent and treat PC in the initial ***,we believe that the present probe is a promising biochemical reagent in diagnosing PC.

关键词： Prostate cancer Biomarker-citrate Boronic acid Lewis acid/base-ICT Red-emissive Mitochondria targeting Prostate tissue

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Therapeutic strategy targeting host lipolysis limits infection by SARS-CoV-2 and influenza A virus

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Signal Transduction and Targeted Therapy 2022年第11期7卷 4223-4234页

作者： Yeong-Bin Baek Hyung-Jun kwon Muhammad Sharif Jeongah Lim In-Chul Lee Young Bae Ryu Jae-In Lee Ji-Sun Kim Young-Seung Lee Dong-Hoon Kim Sang-Ik Park Don-Kyu Kim Jeong-Sun Kim Hyon EChoy Sunwoo Lee Hueng-Sik Choi Timothy FOsborne Tae-il Jeon kyoung-Oh Cho Laboratory of Veterinary Pathology College of Veterinary MedicineChonnam National UniversityGwangju61186Republic of Korea Functional Biomaterial Research Center Korea Research Institute of Bioscience&BiotechnologyJeongeup-siJeollabuk-do56212Republic of Korea Department of Chemistry Chonnam National UniversityGwangju61186Republic of Korea Korean Collection for Type Cultures Korea Research Institute of Bioscience&BiotechnologyJeongeup-siJeollabuk-do56212Republic of Korea Department of Animal Science Chonnam National UniversityGwangju61186Republic of Korea Department of Pharmacology Korea University College of MedicineSeoul02841Republic of Korea Department of Integrative Food Bioscience and BiotechnologyChonnam National UniversityGwangju61186Republic of Korea Department of Microbiology Chonnam National University Medical SchoolGwangju61486Republic of Korea School of Biological Sciences and Technology Chonnam National UniversityGwangju61186Republic of Korea Institute for Fundamental Biomedical Research Department of Medicine and Biological ChemistryJohns Hopkins University School of MedicineSt.PetersburgFL33701USA

The biosynthesis of host lipids and/or lipid droplets(LDs)has been studied extensively as a putative therapeutic target in diverse viral ***,directly targeting the LD lipolytic catabolism in virus-infected cells has not been widely ***,we show the linkage of the LD-associated lipase activation to the breakdown of LDs for the generation of free fatty acids(FFAs)at the late stage of diverse RNA viral infections,which represents a broad-spectrum antiviral *** of membrane transporter systems due to virus-induced cell injury results in intracellular malnutrition at the late stage of infection,thereby making the virus more dependent on the FFAs generated from LD storage for viral morphogenesis and as a source of *** replication of SARS-CoV-2 and influenza A virus(IAV),which is suppressed by the treatment with LD-associated lipases inhibitors,is rescued by supplementation with *** administration of lipase inhibitors,either individually or in a combination with virus-targeting drugs,protects mice from lethal IAV infection and mitigates severe lung lesions in SARS-CoV-2-infected ***,the lipase inhibitors significantly reduce proinflammatory cytokine levels in the lungs of SARS-CoV-2-and IAV-challenged animals,a cause of a cytokine storm important for the critical infection or mortality of COVID-19 and IAV *** conclusion,the results reveal that lipase-mediated intracellular LD lipolysis is commonly exploited to facilitate RNA virus replication and furthermore suggest that pharmacological inhibitors of LD-associated lipases could be used to curb current COVID-19-and future pandemic outbreaks of potentially troublesome RNA virus infection in humans.

关键词： linkage furthermore thereby

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Long-term follow up of endoscopic resection for type 3 gastric NET

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World Journal of Gastroenterology 2013年第46期19卷 8703-8708页

作者： Yong Hwan kwon Seong Woo Jeon Gwang Ha Kim Jin il Kim il-Kwun Chung Sam Ryong Jee Heung Up Kim Geom Seog Seo Gwang Ho Baik Kee Don Choi Jeong Seop Moon Department of Internal Medicine Kyungpook National University Hospital Department of Internal Medicine Busan National University School of Medicine Department of Internal Medicine Catholic University of Korea College of Medicine Department of Internal Medicine Soonchunhyang University Department of Internal Medicine Inje University Pusan Paik Hospital Department of Internal Medicine Jeju National University School of Medicine Department of Internal Medicine Digestive Disease Research InstituteWonkwang University College of Medicine Department of Internal Medicine Hallym University College of Medicine Department of Internal Medicine University of Ulsan College of MedicineAsan Medical Center Department of Internal Medicine Inje University Seoul Paik Hospital

AIM:To clarify the short and long-term results and to prove the usefulness of endoscopic resection in type 3gastric neuroendocrine tumors(NETs).METHODS:Of the 119 type 3 gastric NETs diagnosed from January 1996 to September 2011,50 patients treated with endoscopic resection were enrolled in this *** endoscopic resection,endoscopic mucosal resection(EMR)or endoscopic submucosal dissection(ESD)was *** efficacy,complications,and follow-up results were evaluated ***:EMR was performed in 41 cases and ESD in 9 *** complete resection was performed in 40 cases(80.0%)and incomplete resection specimens were observed in 10 cases(7 vs 3 patients in the EMR vs ESD group,P=0.249).Upon analysis of the incomplete resection group,lateral or vertical margin invasion was found in six cases(14.6%)in the EMR group and in one case in the ESD group(11.1%).Lymphovascular invasions were observed in two cases(22.2%)in the ESD group and in one case(2.4%)in the EMR group(P=0.080).During the follow-up period(43.73;13-60 mo),there was no evidence of tumor recurrence in either the pathologically complete resection group or the incomplete resection *** recurrence was reported during *** addition,no mortality was reported in either the complete resection group or the incomplete resection group for the duration of the follow-up ***:Less than 2 cm sized confined submucosal layer type 3 gastric NET with no evidence of lymphovascular invasion,endoscopic treatment could be considered at initial treatment.

关键词： Stomach Neuroendocrine tumor Endo-scopic resection Treatment Carcinoid

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Pancreatic pseudocystocolonic fistula treated without surgical or endoscopic intervention

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World Journal of Gastroenterology 2014年第7期20卷 1882-1886页

作者： Jae Choon kwon Bo Yean Kim Ah Lim Kim Tae Hoon Kim Myung il Park Ho Jin Jung Jang Hwan Lim Jae kwon Jung Hyun Soo Kim Dong Wook Lee Division of Gastroenterology and Hepatology Department of Internal MedicineDaegu Fatima HospitalDong-gu Daegu701-600South Korea

We report here a case of pancreatic pseudocystocolic fistula that was treated without surgical or endoscopic intervention.A 76-year-old woman,presenting with a fever and epigastric pain,was referred to our *** months prior to this admission,the patient had been admitted to the hospital for acute *** computerized tomography(CT)revealed a 9 cm pseudocyst containing air,and a fistular opening was observed via *** colonoscopy,the abdominal pain was slightly improved,the fever subsided and laboratory results showed decreased C-reactive protein *** observed improvement was likely due to the cleansing of the bowel,which induced spontaneous drainage from the pseudocyst into the *** therapy was administered and daily bowel cleansing was performed using a polyethylene glycol *** three weeks,a follow-up CT revealed that the size of the pseudocyst had decreased significantly from 9 to 5.3 *** addition,laboratory tests were *** patient was able to resume a normal diet and was discharged in good overall health from the hospital,without aggravation of the symptoms.A colonoscopy performed 3 mo later and a follow-up CT performed 6 mo later confirmed that both the fistula and pseudocyst had completely disappeared.

关键词： Acute pancreatitis Pseudocyst Pseudocystocolic fistula

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Nontarget screening using passive air and water sampling with a level Ⅱ fugacity model to identify unregulated environmental contaminants

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Journal of Environmental Sciences 2017年第12期29卷 84-91页

作者： In-Young Chung Yu-Mi Park Hyun-Jeoung Lee Hyuk Kim Dong-Hoon Kim il-Gyu Kim Sang-Min Kim Young-Sun Do Kwang-Seol Seok Jung-Hwan kwon Chemical Research Division Environmental Health Research Department National Institute of Environmental ResearchIncheon Division of Environmental Science and Ecological Engineering Korea University

It is thought that there are many unregulated anthropogenic chemicals in the *** risk assessment of chemicals, it is essential to estimate the predicted environmental concentrations. As an effort of identifying residual organic contaminants in air and water in Korea, nontarget screening using two-dimensional gas chromatography time-of-flight mass spectrometry（GC × GC-TOFMS） was conducted at 10 sites using polyurethane foam passive air sampler and at 6 sites using polydimethyl siloxane（PDMS） passive water sampler in three different seasons in 2014. More than 600 chemical peaks were identified satisfying the identification criteria in air and water samples, respectively, providing a list for further investigation. Chemical substances with reported national emission rates in2014（n = 149） were also screened for potential existence in the environment using a level Ⅱ fugacity model. Most of chemical substances classified as not detectable were not identified with detection frequency greater than 20% by nontarget screening, indicating that a simple equilibrium model has a strong potential to be used to exclude chemicals that are not likely to remain in the environment after emissions from targeted monitoring.

关键词： Nontarget screening GC × GC-TOFMS Passive sampling Pollutant release and transfer register(PRTR) Fugacity model

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Luminescent Properties of Gd_(3)PO_(7):Eu in UV/VUV Region

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Chinese Physics Letters 2001年第5期18卷 690-691页

作者： ZENG Xiao-Qing HONG Guang-Yan YOU Hong-Peng WU Xue-Yan KIM Chang-Hong PYUN Chong-Hong YU Byung-Yong BAE Hyun-Sook PARK Cheal-Hee kwon il-Eok Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun 130022 Solid State Chemistry Labortory Korea Institute of Science and TechnologyP.O.Box 131CheongryangSeoul 130-650Korea

The luminescent properties of Gd_(3)PO_(7):Eu were investigated in UV and VUV *** phosphor has so strong emissions around 618.5 nm under UV excitation,especially around 209\,nm,so that it has a better colour saturation than that of Y_(2)O_(3):*** would be a new potential red phosphor for lamp and other applications with UV-excitation source or even for displaying *** the VUV excitation spectrum of Eu^(3+)emissions,energy absorptions by Gd^(3+),Gd-O and PO_(4)^(3-) were observed,on which it can be inferred that there are three kinds of energy transferring processes to Eu^(3+)*** energy absorptions of Gd^(3+),Gd-O and PO_(4)^(3-) are induced by 4f→4f transitions,band-gap transition of Gd_(3)PO_(7) and intramolecular(2t_(2)→2a,3t_(2))transition,*** energy transfer efficiency of the PO_(4)^(3-) intramolecular transition is lower compared with that of the band-gap transition(Gd-O).

关键词： excitation intramolecular transition

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