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Experimental and computational optimization of Prussian blue analogues as high-performance cathodes for sodium-ion batteries:A review

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Journal of Energy Chemistry 2024年第6期93卷 627-662,I0015页

作者： Gwangeon Oh junghoon kim Shivam Kansara Hyokyeong Kang Hun-Gi Jung Yang-Kook Sun Jang-Yeon Hwang Department of Energy Engineering Hanyang UniversitySeoul 04763Republic of Korea Energy Storage Research Center Clean Energy Research DivisionKorea Institute of Science and TechnologySeoul 02792Republic of Korea Department of Energy Science Sungkyunkwan UniversitySuwon 16419Republic of Korea KIST-SKKU Carbon-Neutral Research Center Sungkyunkwan UniversitySuwon 16419Republic of Korea Department of Battery Engineering Hanyang UniversitySeoul 04763Republic of Korea

In this review,we discuss the electrochemical properties of Prussian blue(PB)for Na^(+)storage by combining structural engineering and electrolyte *** integrated experimental data and density functional theory(DFT)in sodium-ion battery(SIB)research to refine the atomic arrangements and crystal lattices and introduce substitutions and *** changes affect the lattice stability,intercalation,electronic and ionic conductivities,and electrochemical *** unraveled the intricate structure-electrochemical behavior relationship by combining experimental data with computational models,including first-principles *** holistic approach identified techniques for optimizing PB and Prussian blue analog(PBA)structu ral properties for *** also discuss the tuning of electrolytes by systematically adjusting their composition,concentration,and additives using a combination of molecular dynamics(MD)simulations and DFT *** review offers a comprehensive assessment of strategies for enhancing the electrochemical properties of PB and PBAs through structural engineering and electrolyte modifications,combining experimental insights with advanced computational simulations,and paving the way for next-generation energy storage systems.

关键词： Prussian blue analogs(PBAs) Sodium ion batteries(SIBs) Structural engineering Electrolyte modifications Experiments Density functional theory(DFT)

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Technology Development of Unmanned Underwater Vehicles (UUVs)

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Journal of Computer and Communications 2017年第7期5卷 28-35页

作者： Jinyeong Heo junghoon kim Yongjin Kwon Department of Industrial Engineering Ajou University Suwon South Korea The 6th R&D Institute Agency for Defense Development Jinhae South Korea

In recent years, the weapon systems have been changing drastically because of the advancement of science technology and the change of military concept of combat. There is an unmanned system at the center of all those changes. Especially, in case of maritime environment, as the center stage of combat has changed from ocean to coastal areas, it is difficult for the existing naval forces to effectively operate in shallow waters. Therefore, unmanned underwater vehicles (UUVs) are being required at an increasing pace. In this paper, we analyze the characteristics of already developed UUVs, which are the key unmanned system of the marine battlefield environment in the future. Through the analysis of development cases and the investigation of the essential technologies, the critical design issues of UUVs are elaborated. We also suggest the future directions of the UUV technologies based on the case analysis.

关键词： Maritime Military System Unmanned System UUV (Unmanned Underwater Vehicle) UUV Operation Function Autonomous Control

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Analysis of Design Directions for Unmanned Surface Vehicles (USVs)

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Journal of Computer and Communications 2017年第7期5卷 92-100页

作者： Jinyeong Heo junghoon kim Yongjin Kwon Department of Industrial Engineering Ajou University Suwon South Korea The 6th R&D Institute Agency for Defense Development Jinhae South Korea

In recent years, because of the development of marine military science technology, there is a growing interest in the unmanned systems throughout the world. Also, the demand of Unmanned Surface Vehicles (USVs) which can be autonomously operated without the operator intervention is increasing dramatically. The growing interests lie in the facts that those USVs can be manufactured at much lower costs, and can be operated without the human fatigue, while can be sent to the hostile or quite dangerous areas that are inherently unhealthy for human operators. The utilization and the deployment of such vessels will continue to grow in the future. In this paper, along with the technological development of unmanned surface vehicles, we investigate and analyze the cases of already developed platforms and identify the trends of the technological advances. Additionally, we suggest the future directions of development.

关键词： Maritime Military System Unmanned System USV (Unmanned Surface Vehicle) USV Operation Function Autonomous Control

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A Study on Biological Half-life of Radioiodine in Thyroid Glands on Korean Adult Male

A Study on Biological Half-life of Radioiodine in Thyroid Gl...

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The Second Asian and Oceanic Congress for Radiation Protection

作者： junghoon kim Jooho Whang Department of Nuclear Engineering Kyunghee UniversityKiheungYonginKyunggi449-701Republic of Korea Department of Nuclear Engineering Kyunghee UniversityKiheungYonginKyunggi449-701Republic of Korea

In this study,biological half-life of radioiodine（131I）in thyroid glands was calculated with 10 Korean adult males as the target in order to evaluate radiation does to suit the physiological characteristics of the *** the method of experiment,131I was orally administered on ***,measurements were taken in intervals at the 2nd,4th,6th and 24th hour for the first 24 hours and continuously in the 2nd and the 3rd *** then on,radioactivity of 131I accumulated in thyroid glands was measured in the interval of 10 days up to the 60th day to calculate the biological half-life of 131I in thyroid *** result indicated that the biological half-life of radioiodine was 37 *** is different from the existing data of ICRP-56 and 67,which suggest biological half-life of radioiodine in thyroid glands as 80 days and the result of the study by ***,et al.,which evaluates the biological half-life as 66 *** can be interpreted that such result was produced firstly by the fact that the target of experiment in this study was healthy male adults whereas the existing studies were targeted on hospitalized patients and middle-aged people as the test group and secondly by the fact that,unlike the Westerners,Korean people have the dietary habit of taking in large quantities of iodine,etc.

关键词： biological half-life thyroid glands radiation does.

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Effects of Lizhong Tang on gastrointestinal motility in mice

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World Journal of Gastroenterology 2016年第34期22卷 7778-7786页

作者： Min Cheol Lee Wooram Ha Jinhyeong Park junghoon kim Yunjin Jung Byung Joo kim Division of Longevity and Biofunctional Medicine Healthy Aging Korean Medical Research CenterSchool of Korean MedicinePusan National UniversityYangsan 50612South Kerea Division of Pharmacology School of Korean MedicinePusan National University Yangsan 50612South Kerea College of Pharmacy Pusan National UniversityBusan 46241 South Korea

AIM To investigate the effects of Lizhong Tang,a traditional Chinese medicine formula,on gastrointestinal motility in *** The in vivo effects of Lizhong Tang on GI motility were investigated by measuring the intestinal transit rates(ITRs) and gastric emptying(GE) values in normal mice and in mice with experimentally induced GI motility dysfunction(GMD).RESULTS In normal ICR mice,the ITR and GE values were significantly and dose-dependently increased by Lizhong Tang(ITR values: 54.4% ± 1.9% vs 65.2% ± 1.8%,P < 0.01 with 0.1 g/kg Lizhong Tang and 54.4% ± 1.9% vs 83.8% ± 1.9%,P < 0.01 with 1 g/kg Lizhong Tang; GE values: 60.7% ± 1.9% vs 66.8% ± 2.1%,P < 0.05 with 0.1 g/kg Lizhong Tang and 60.7% ± 1.9% vs 72.5% ± 1.7%,P < 0.01 with 1 g/kg Lizhong Tang). The ITRs of the GMD mice were significantly reduced compared with those of the normal mice,which were significantly and dose-dependently reversed by Lizhong Tang. Additionally,in loperamide- and cisplatin-induced models of GE delay,Lizhong Tang administration reversed the GE *** These results suggest that Lizhong Tang may be a novel candidate for development as a prokinetic treatment for the GI tract.

关键词： Lizhong Tang Gastrointestinal disorders Motility Intestinal transit rate Gastric emptying

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Uniaxially crumpled graphene as a platform for guided myotube formation

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Microsystems & Nanoengineering 2019年第1期5卷 144-153页

作者： junghoon kim Juyoung Leem Hong Nam kim Pilgyu Kang Jonghyun Choi Md Farhadul Haque Daeshik Kang SungWoo Nam Department of Mechanical Science and Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Center for BioMicrosystems Brain Science InstituteKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Division of Bio-Medical Science and Technology KIST SchoolKorea University of Science and TechnologySeoul 02792Republic of Korea Department of Mechanical Engineering George Mason UniversityFairfaxVA 22030USA Department of Mechanical Engineering Ajou UniversitySuwon 16499Republic of Korea Department of Materials Science and Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA

Graphene,owing to its inherent chemical inertness,biocompatibility,and mechanical flexibility,has great potential in guiding cell behaviors such as adhesion and ***,due to the two-dimensional(2D)nature of graphene,the microfabrication of graphene into micro/nanoscale patterns has been widely adopted for guiding cellular *** this study,we report crumpled graphene,i.e.,monolithically defined graphene with a nanoscale wavy surface texture,as a tissue engineering platform that can efficiently promote aligned C2C12 mouse myoblast cell *** imparted out-of-plane,nanoscale crumpled morphologies to flat graphene via compressive straininduced *** C2C12 mouse myoblast cells were seeded on the uniaxially crumpled graphene,not only were the alignment and elongation promoted at a single-cell level but also the differentiation and maturation of myotubes were enhanced compared to that on flat *** results demonstrate the utility of the crumpled graphene platform for tissue engineering and regenerative medicine for skeletal muscle tissues.

关键词： Uniaxial graphene alignment

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Effects of Craddition on Charpy impact energy in austenitic 0.45C-24Mn-(0,3,6)Cr steels

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Journal of Materials Science & Technology 2020年第15期47卷 21-30页

作者： Seok Gyu Lee Bohee kim Min Cheol Jo Kyeong-Min kim junghoon Lee Jinho Bae Byeong-Joo Lee Seok Su Sohn Sunghak Lee Center for Advanced Aerospace Materials Pohang University of Science and TechnologyPohang37673South Korea Steel Products Design Team Hyundai SteelDangjin31779South Korea Steel Products Research Group 1 Technical Research LaboratoriesPOSCOGwangyang57807South Korea Department of Materials Science and Engineering Korea UniversitySeoul02841South Korea

Effects of Cr addition(0,3,and 6 wt%) on Charpy impact properties of Fe-C-Mn-Cr-based steels were studied by conducting dynamic compression tests at room and cryogenic *** room temperature,deformation mechanisms of Charpy impacted specimens were observed as twinning induced plasticity(TWIP) without any transfo rmation induced plasticity(TRIP) in all the *** cryogenic temperature,many twins were populated in the Cr-added steels,but,interestingly,fine ε-martensite was found in the OCr steel,satisfying the Shoji-Nishiyama(S-N) orientation relationship,{111}γ//{0002}ε and γ//ε.Even though the cryogenic-temperature staking fault energies(SFEs) of the three steel were situated in the TWIP regime,the martensitic transformation was induced by Mn-and Cr-segregated *** the OCr steel,SFEs of low-(Mn,Cr) bands lay between the TWIP and TRIP regimes which were sensitively affected by a small change of *** dynamic compressive test results well showed the relation between segregation bands and the *** of Cr were known as not only increasing the SFE but also promoting the carbide *** order to identify the possibility of carbide formation,a precipitation kinetics simulation was conducted,and the predicted fractions of precipitated M23C6 were negligible,0.4-1.1×10-5,even at the low cooling rate of 10℃/s.

关键词： Austenitic high-Mn steels Charpy impact energy Split Hopkinson pressure bar Twinning induced plasticity(TWIP) Transformation induced plasticity(TRIP) Stacking fault energy(SFE)

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Characterizing and controlling infrared phonon anomaly of bilayer graphene in optical-electrical force nanoscopy

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Light(Science & Applications) 2023年第12期12卷 2700-2710页

作者： junghoon Jahng Sunho Lee Seong-Gu Hong Chang Jun Lee Sergey G.Menabde Min Seok Jang Dong-Hyun kim Jangyup Son Eun Seong Lee Hyperspectral Nano-imaging Team Korea Research Institute of Standards and ScienceDaejeon 34113Republic of Korea Department of Aerospace Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Multiscale Mechanical Properties Measurement Team Korea Research Institute of Standards and ScienceDaejeon 34113Republic of Korea School of Mechanical Engineering Chonnam National UniversityGwangju 61186Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Functional Composite Materials Research Center Korea Institute of Science and TechnologyJeonbuk 55324Republic of Korea SKKU Advanced Institute of Nanotechnology Sungkyunkwan UniversitySuwon 16419Republic of Korea Division of Nano&Information Technology KIST SchoolUniversity of Science and TechnologySeoul 02792Republic of Korea

We,for the first time,report the nanoscopic imaging study of anomalous infrared(IR)phonon enhancement of bilayer graphene,originated from the charge imbalance between the top and bottom layers,resulting in the enhancement of E1u mode of bilayer graphene near 0.2 *** modified the multifrequency atomic force microscope platform to combine photo-induced force microscope with electrostatic/Kelvin probe force microscope constituting a novel hybrid nanoscale optical-electrical force imaging *** enables to observe a correlation between the IR response,doping level,and topographic information of the graphene *** the nanoscale spectroscopic image measurements,we demonstrate that the charge imbalance at the graphene interface can be controlled by chemical(doping effect via Redox mechanism)and mechanical(triboelectric effect by the doped cantilever)***,we can also diagnosis the subsurface cracks on the stacked few-layer graphene at nanoscale,by monitoring the strain-induced IR phonon *** approach provides new insights into the development of graphene-based electronic and photonic devices and their potential applications.

关键词： electrical force optical

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The effects of single versus combined therapy using LIM-kinase 2 inhibitor and type 5 phosphodiesterase inhibitor on erectile function in a rat model of cavernous nerve injury-induced erectile dysfunction

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Asian Journal of Andrology 2019年第5期21卷 493-500页

作者： Min Chui Cho junghoon Lee Juhyun Park Sohee Oh Ji Sun Chai Hwancheol Son Jae-Seung Paick Soo Woong kim Department of Urology Seoul National University College of MedicineSMG-SNU Boramae Medical CenterSeoul 07061Korea Department of Urology Seoul National University College of MedicineSeoul National University HospitalSeoul 03080Korea Department of Biostatistics Seoul National University College of MedicineSMG-SNU Boramae Medical CenterSeoul 07061Korea

We aimed to determine whether combination of LIM-kinase 2 inhibitor(LIMK2i)and phosphodiesterase type-5 inhibitor(PDE5i)could restore erectile function through suppressing cavernous fibrosis and improving caver nous apoptosis in a rat model of cavernous nerve crush injury(CNCI).Seventy 12-week-old Sprague-Dawley rats were equally distributed into five groups as follows:(1)sham surgery(Group S),(2)CNCI(Group I),(3)CNCI treated with daily intraperitoneal administration of 10.0 mg kg^-1 LIMK2i(Group I+L),(4)daily oral administration of 20.0 mg kg-1 udenafil,PDE5i(Group I+U),and(5)combined administration of 10.0 mg kg^-1 LIMK2i and 20.0 mg kg^-1 udenafil(Group I+L+U).Rats in Groups I+L,I+U,and I+L+U were treated with respective regimens for 2 weeks after *** 2 weeks after surgery,erectile response was assessed using *** tissues were processed for histological studies and western *** I showed lower intracavernous pressure(ICP)/mean arterial pressure(MAP),lower area under the curve(AUC)/MAP,decreased immunohistochemical staining for alpha-smooth muscle(SM)actin,higher apoptotic index,lower SM/collagen ratio,increased phospho-LIMK2-positive fibroblasts,decreased protein kinase B/endothelial nitric oxide synthase(Akt/eNOS)phosphorylation,increased LIMK2/cofilin phosphorylation,and increased protein expression of fibronectin,compared to Group *** all three treatment groups,erectile responses,protein expression of fibronectin,and SM/collagen ratio were *** I+L+U showed greater improvement in erectile response than Group I+*** content and apoptotic index in Groups I+U and I+L+U were improved compared to those in Group ***,Group I+L did not show a significant improvement in SM content or apoptotic *** number of phospho-LIMK2-positive fibroblasts was normalized in Groups I+L and I+L+U,but not in Group I+***/eNOS phosphorylation was improved in Groups I+U and I+L+U,but not in Group I+***2/cofilin phosphorylation was i

关键词： apoptosis erectile dysfunction fibrosis LIM kinase phosphodiesterase

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Rheostatic Control of ABA Signaling through HOS15-Mediated OST1 Degradation

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Molecular Plant 2019年第11期12卷 1447-1462页

作者： Akhtar Ali Jae Kyoung kim Masood Jan Haris Ali Khan Irfan Ullah Khan Mingzhe Shen junghoon Park Chae Jin Lim Shah Hussain Dongwon Baek Kai Wang Woo Sik Chung Vicente Rubio Sang Yeol Lee Zhizhong Gong Woe Yeon kim Ray ABressan Jose MPardo Dae-Jin Yun Department of Biomedical Science&Engineering Konkuk UniversitySeoul 05029South Korea Department of Mathematical Sciences Korea Advanced Institute of Science and TechnologyDaejeon 34131Korea Division of Applied Life Science Plant Molecular Biology and Biotechnology Research CenterGyeongsang National UniversityJinju 660-701South Korea State Key Laboratory of Plant Physiology and Biochemistry College of Biological SciencesChina Agricultural UniversityBeijing 100193China Centro Nacional de Biotecnologia-CSIC Darwin 3.Campus de la UAM.Cantoblanco28049 MadridSpain Department of Horticulture and Landscape Architecture Purdue University625 Agriculture Mall DriveWest LafayetteIN 47907-2010USA lnstituto de Bioquimica Vegetal y Fotosintesis cicCartujaCSIC-Universidad de SevillaAmericoVespucio 49Sevilla 41092Spain

Dehydrating stresses trigger the accumulation of abscisic acid(ABA),a key plant stress-signaling hormone that activates Snf1-Related Kinases(SnRK2s)to mount adaptive ***,the regulatory circuits that terminate the SnRK2s signal relay after acclimation or post-stress conditions remain to be ***,we show that the desensitization of the ABA signal is achieved by the regulation of OST1(SnRK2.6)protein stability via the E3-ubiquitin ligase *** ABA signal,HOS15-induced degradation of OST1 is inhibited and stabilized OST1 promotes the stress *** the ABA signal terminates,protein phosphatases ABI1/2 promote rapid degradation of OST1 via ***,we found that even in the presence of ABA,OST1 levels are also depleted within hours of ABA signal *** unexpected dynamics of OST1 abundance are then resolved by systematic mathematical modeling,demonstrating a desensitizing feedback loop by which OST1-induced upregulation of ABI1/2 leads to the degradation of *** model illustrates the complex rheostat dynamics underlying the ABA-induced stress response and desensitization.

关键词： ABA signaling drought stress HOS15 OST1 ABI1/2 protein degradation and stability

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