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Journal of Materials Science & Technology 2023年第9期140卷 142-152页

作者： Jungwook Song Achmad Yanuar Maulana Woojin Jae Hyunjeong Gim Boram Yun Cybelle M.Futalan jongsik kim Department of Chemistry Dong-A UniversityBusan 49315South Korea Department of Chemical Engineering(BK21 FOUR Graduate Program) Dong-A UniversityBusan 49315South Korea Department of Community and Environmental Resource Planning University of the Philippines Los BañosLos BañosLaguna 4031Philippines

Lithium vanadium oxide(Li_(3)VO_(4))has gained attention as an alternative anode material because of its higher theoretical capacity(592 mAh g^(−1)),moderate ionic conductivity(∼10^(−4)S cm^(−1)),and lower working voltage range(∼0.5–1.0 V ***/Li^(+))in comparison to other metal ***,there are disadvantages to using Li_(3)VO_(4)as an anode material,such as low initial Coulombic efficiency and poor rate performance that is attributed to its low electronic conductivity(<10^(−1)0 S cm^(−1)).In the present study,the synthesis of one-dimensional Li_(3)VO_(4)electrode was performed via a facile method by using oxidized vapor grown carbon fiber as a template and the formation of the outer shells of conductive carbon via chemical vapor deposition *** a half-cell configuration,the prepared Li_(3)VO_(4)composites exhib-ited an enhanced electrochemical performance with a reversible capacity of 516.2 mAh g^(−1)after 100 cycles at a rate of 0.5 C within the voltage range of 0.01–3.0 *** a high rate of 5 C,a large reversible capacity of 322.6 mAh g^(−1)was also observed after 500 *** full cell(LVO/VGCF16-C||LiCoO_(2))using LiCoO_(2)as the cathode showed competitive electrochemical performance,which demonstrates its high potential in commercial applications.

关键词： Lithium-ion batteries Anode materials Lithium vanadium oxide One-dimensional electrode Carbon fiber

Enhanced electrochemical performance of graphitic carbon-wrapped spherical FeOF nanoparticles using maleopimaric acid as a cathode material for sodium-ion batteries

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Journal of Materials Science & Technology 2021年第26期85卷 184-193页

作者： Achmad Yanuar Maulana Jungwook Song Da Won Leeg Chae Eun Leeg jongsik kimg Department of Chemistry Dong-A UniversityBusan 49315South Korea Department of Chemical Engineering(BK21 FOUR Graduate Program) Dong-A UniversityBusan 49315South Korea

Sodium-ion batteries(SIBs)are considered one of the most promising energy storage systems for replacing lithium-ion batteries because of the high abundance and low cost of *** oxyfluoride(FeOF)is a promising conversion-based cathode material for SIBs because of its high theoretical capacity of about855 mA h g^(-1),low-cost chemical compositions,and its lower sensitivity to the size of charged carrier ***,the poor electrical conductivity and ionic diffusion of FeOF result in a low rate capability and *** this work,FeOF nanoparticles wrapped by graphitic carbon layers were synthesized using abietic or maleopimaric acid as both the carbon source and organic *** addition,the morphology of the FeOF particles was gradually controlled from rod to spherical shapes,simply depending on the rosin *** FeOF nanoparticles prepared with maleopimaric acid showed a large reversible discharge capacity of 356.7 mA h g^(-1)with a fading rate of 0.21%per cycle after 100 cycles at a current density of 100 mA g^(-1)and an excellent rate capability.

关键词： Na-ion batteries Cathode Iron oxyfluoride Graphitized carbon Maleopimaric acid

One dimensional pea-shaped NiSe_(2) nanoparticles encapsulated in N-doped graphitic carbon fibers to boost redox reversibility in sodium-ion batteries

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Journal of Materials Science & Technology 2024年第1期168卷 215-226页

作者： Hyunjeong Gim Achmad Yanuar Maulana Jiwon Choi Jungwook Song Boram Yun Yuri Jeong Nahyun An Myeongkee Park Cybelle M.Futalan jongsik kim Department of Chemical Engineering(BK21 FOUR Graduate Program) Dong-A UniversityBusan 49315Korea(the Republic of) Department of Chemistry Dong-A UniversityBusan 49315Korea(the Republic of) Department of Chemistry Pukyong National UniversityBusan 48513Korea(the Republic of) Institute of Civil Engineering University of the PhilippinesDiliman 1127Philippines

In recent years,sodium-ion batteries(SIBs)have emerged as a promising technology for energy storage systems(ESSs)because of the abundance and affordability of ***,metal selenides have been studied as promising high-performance conversion-type anode materials in *** them,nickel se-lenide(NiSe_(2))has received considerable attention due to its high theoretical capacity of 495 mAh g^(-1)and ***,it still suffers from poor cycling stability because of the low electrochemical reactivity,large volume expansion,and structural instability during *** address these challenges,NiSe_(2)nanoparticles encapsulated in N-doped graphitic carbon fibers(NiSe_(2)@NGCF)were synthesized by using ZIF-8 as a ***_(2)@NGCF showed a high discharge capacity of 558.3 mAh g^(-1)with a fading rate of 0.14%per cycle after 200 cycles at 0.5 A g^(-1)in 0.01-3.0 *** a very high current density of 5 A g^(-1),the capacity still displayed excellent long-term cycle life with a discharge capacity of 406.1 mAh g^(-1)with a fading rate of 0.016%per cycle after 3000 *** mechanism of the excellent electrochem-ical performance of NiSe_(2)@NGCF was thoroughly investigated by ex-situ XRD,TEM,and SEM ***,NiSe_(2)@NGCF//Na_(3)V_(2)(PO_(4))_(3)full-cell also delivered an excellent reversible capacity of 378.7 mAh g^(−1)at 0.1 A g^(−1)after 50 cycles,demonstrating its potential for practical application in SIBs.

关键词： Sodium-ion batteries Anode materials Nickel selenide N-doped graphitic carbon fibers One-dimensional electrode

Conditioned secretome of adipose-derived stem cells improves dextran sulfate sodium-induced colitis in mice

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World Journal of Gastroenterology 2021年第23期27卷 3342-3356页

作者： Seunghun Lee Jeonghoon Heo Eun-Kyung Ahn Jae Hyun kim Young-Ho kim Hee-Kyung Chang Sang-Joon Lee jongsik kim Seun-Ja Park Department of Colorectal Surgery Kosin University College of MedicineBusan 49267South Korea Department of Molecular Biology and Immunology Kosin University College of MedicineBusan 49267South Korea Department of Gastroenterology Kosin University College of MedicineBusan 49267South Korea Department of Pathology Kosin University College of MedicineBusan 49267South Korea Department of Ophthalmology Kosin University College of MedicineBusan 49267South Korea Department of Anatomy Kosin University College of MedicineBusan 49267South Korea

BACKGROUND Inflammatory bowel diseases(IBD)is related to uncontrolled immune ***,there is no successful treatment for significant improvement in *** cells display their therapeutic effects through their repopulating capacity or secreting *** To investigate the effects of conditioned mouse adipose-derived stem cells(mADSCs)secretome on colitis-induced *** mADSCs were isolated from adipose tissue of C57BL/6 *** mADSCs secrectome was obtained by culturing of mADSCs with lipopolysaccharides(LPS,1μg/mL)for 24 *** colitis was induced by 2%dextran sulfate sodium(DSS)drinking water for 7 d and then normal drinking water for 4 *** mice were treated with normal culture medium(NM group),conditioned mADSCs secretome(CM group)or mADSCs(SC group).The length of colon and histopatholgy of colon tissues were *** mRNA expression levels of inflammatory cytokines in colon tissue and the serum interleukin(IL)-6 levels were *** The isolated mADSCs maintained the mADSCs specific gene expression profiles during *** conditioned mADSCs secretome released by the treatment of mADSCs with LPS contained mainly inflammatory chemokines,colony-stimulating factors and inflammatory *** loss of body weight and reduction in colon length were ameliorated in the CM *** conditioned mADSCs secretome reduced the histological score in colon *** expression of IL-1b and IL-6 mRNAs in colon tissues significantly inhibited in the CM group compared to SC group and NM group,*** elevation of serum IL-6 levels was also ameliorated in the CM *** results indicate that the conditioned mADSCs secretome suppressed the synthesis of inflammatory cytokines in damaged colon tissue and the elevation of serum IL-6 concentration in DSS-induced mice CONCLUSION Conditioned mADSCs secretome might play regenerative roles by the suppression of IL-6 in serum and tissue during acute colitis,and may be

关键词： Adipose-derived stem cells Conditioned secretome Cytokines Interleukin-6 Colitis Regeneration

Meta-analysis on the effectiveness of parent education for children with disabilities

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World Journal of Clinical Cases 2023年第29期11卷 7082-7090页

作者： jongsik Jang Geonwoo kim Hyewon Jeong Narae Lee Seri Oh Department of Occupatioanl Therapy Kangwon National UniversityGangwondoSamcheok 25945South Korea Department of Occupational Therapy Kangwon National University Graduate SchoolGangwon-doSamcheok 25949South Korea

BACKGROUND Parents of children with disabilities often have difficulty understanding their child’s behavior and are unable to do it appropriately because they do not know what to *** more we properly understand children with disabilities,the more positive the importance of parent education becomes in various *** To demonstrate the effectiveness of parent education for children with disabilities in various aspects and present it as evidence that can be used *** For a meta-analysis on the effectiveness of parent education for children with disabilities,literature was collected from 2002 to 2022 using PubMed,Embase,Web of Science,Directory of Open Access Journals,and Europe *** terms were“disabled children,”“disabled children,”“parent education,”“parent training,”and“parent coaching.”The final searched literature included a total of 11 *** calculate the effect size,the mean,standard deviation,and sample size of the experimental and control groups were analyzed,and a meta-analysis was performed using RevMan version *** analyze statistical heterogeneity,a chi-square test was performed to evaluate the significance of Q statistics to indicate statistical *** The final literature totaled 11 articles,and a total of 4 items were *** were 5 studies on parental depression,the heterogeneity was 98%,and the effect size for parental depression was 0.35[confidence interval(CI:0.30-0.40)],indicating a small but statistically significant effect *** were 4 studies on parenting attitude,the heterogeneity was 100%,the effect size on parenting attitude was 0.41(CI:0.37-0.46),which was a medium effect size,and the P value showed a statistically significant ***,face-to-face parent education was found to have a larger effect size than non-face-to-face *** parent education methods,face-to-face parent education had a medium effect size[0.57(CI:0.52-0.61)],while non-face-to-face par

关键词： Children Children with disabilities Education Meta-analysis Parents Parent education

Data collection model in hybrid network for participatory sensing

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International Journal of Modeling, Simulation, and Scientific Computing 2016年第4期7卷 16-22页

作者： Jeongseok Choi Taeyoung kim Jaekwon kim Sunghwan Moon Youngshin Han jongsik Lee Department of Computer Science and Information Engineering Inha University 100 Inha-roNam-guIncheonKorea Department of Computer Engineering Sungkyul University 53 Sungkyuldaehak-roManan-guAnyang-siGyeonggi-doKorea

Advances in mobile technology make most people have their own mobile devices which contain various sensors such as a *** produce their own personal data or collect surrounding environment data with their mobile devices at every ***,a broad spectrum of studies on Participatory Sensing,the concept of extracting new knowledge from a mass of data sent by participants,are *** collection method is one of the base technologies for Participatory Sensing,so networking and data filtering techniques for collecting a large number of data are the most interested research *** this paper,we propose a data collection model in hybrid network for participatory *** proposed model classifies data into two types and decides networking form and data filtering method based on the data type to decrease loads on data center and improve transmission speed.

关键词： Data collection model participatory sensing data filtering hybrid network