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Appetite for Natech Risk Information in Japan:Understanding Citizens'Communicative Behavior Towards Risk Information Disclosure Around Osaka Bay

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International Journal of Disaster Risk Science 2022年第3期13卷 372-390页

作者： Dimitrios Tzioutzios jeong-Nam kim Ana Maria Cruz Department of Urban Management Graduate School of EngineeringKyoto UniversityKyoto615-8540Japan Gaylord College of Journalism and Mass Communication University of OklahomaNormanOK73019USA Disaster Prevention Research Institute Kyoto UniversityKyoto611-0011Japan

Effective risk communication is essential for disaster risk *** from empowering communities to make informed risk choices,risk information disclosure can also drastically enhance their disaster preparedness,especially concerning conjoint scenarios of technological and natural hazards(Natech).A fundamental precondition is the actual demand for such *** study ventures to assess whether residents around Osaka Bay have this demand,or"appetite,"for risk information disclosure,as well as to understand their communicative behavior and perceived challenges in the Japanese context through the prism of the Situational Theory of Problem *** test this framework under realistic conditions,data were collected through a household questionnaire survey from two urban areas near industrial complexes in Osaka *** results show that identifying Natech risk information deficiency as a problem was not a statistically significant predictor for individuals'motivation to ***,their motivation increased as their perceived personal involvement with the situation rose,while the perceived obstacles in doing something about it exerted a negative influence on their ***'motivation intensified their communicative actions to solve this *** segmentation underscored the elevated public perceptions concerning the issue of risk information deficiency in nearly nine out of ten *** findings indicate a strong community appetite for chemical and Natech risk information,which subsequently led to high situational motivation to engage in communicative action,particularly information *** management policy is suggested to focus on introducing chemical risk information disclosure regulatory initiatives to encourage citizen engagement.

关键词： Japan Natech risk information Participatory risk management Risk communication Situational Theory of Problem Solving(STOPS)

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A compact polymer–inorganic hybrid gas barrier nanolayer for flexible organic light-emitting diode displays

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npj Flexible Electronics 2022年第1期6卷 204-209页

作者： Seung Hun kim Seung Yong Song Soo Youn kim Moon Won Chang Hyo jeong Kwon Kwan Hyuck Yoon Woo Yong Sung Myung Mo Sung hye Yong Chu Display Research Center Samsung DisplayYongin-siGyeonggi-do 17113Republic of Korea Department of Chemistry Hanyang UniversitySeoul 04763Republic of Korea

Atomic layer infiltration technology allows the formation of a nanometer-thick polymer-inorganic hybrid barrier layer in polymer material for flexible organic light-emitting diode(OLED)*** this study,according to transmission electron microscopy and secondary-ion mass spectrometry analysis results under various process conditions,a compact polymer-inorganic hybrid nanolayer was successfully formed in a polymer and good barrier performance was revealed with a low water vapor transmission rate under optimal process ***,through gas chromatography-mass spectrometry measurements after ultra-violet radiation testing,polymer out-gassing decreased compared to bare *** on barrier properties,the polymer with a polymer-inorganic hybrid barrier nanolayer was applied to a flexible OLED display as a *** storage tests and folding tests,the flexible OLED display exhibits good reliability and better flexibility compared to those with an inorganic barrier *** results confirm that the polymer-inorganic hybrid nanolayer is suitable for barrier layer formation in flexible OLED displays.

关键词： diode barrier layer

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Bioinspired magnetic cilia:from materials to applications

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Microsystems & Nanoengineering 2023年第6期9卷 107-128页

作者： Seongjin Park Geonjun Choi Minsu Kang Woochan kim Jangho kim Hoon Eui jeong Department of Mechanical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea Department of Convergence Biosystems Engineering Chonnam National UniversityGwangju61186Republic of Korea Interdisciplinary Program in IT-Bio Convergence System Chonnam National UniversityGwangju61186Republic of Korea

Microscale and nanoscale cilia are ubiquitous in natural systems where they serve diverse biological *** artificial magnetic cilia have emerged as a highly promising technology with vast potential applications,ranging from soft robotics to highly precise *** this review,we comprehensively discuss the roles of cilia in nature and the various types of magnetic particles utilized in magnetic cilia;additionally,we explore the top-down and bottom-up fabrication techniques employed for their ***,we examine the various applications of magnetic cilia,including their use in soft robotics,droplet and particle control systems,fluidics,optical devices,and ***,we present our conclusions and the future outlook for magnetic cilia research and development,including the challenges that need to be overcome and the potential for further integration with emerging technologies.

关键词： magnetic overcome precise

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Gut microbiota as a potential key to modulating humoral immunogenicity of new platform COVID-19 vaccines

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Signal Transduction and Targeted Therapy 2023年第6期8卷 2447-2450页

作者： hye Seong Bo Kyu Choi Young-Hee Han Jun Hyoung kim jeong-An Gim Sooyeon Lim Ji Yun Noh Hee Jin Cheong Woo Joo kim Joon Young Song Department of Internal Medicine Korea University College of MedicineSeoulRepublic of Korea Asia Pacific Influenza Institute Korea University College of MedicineSeoulRepublic of Korea Vaccine Innovation Center Korea University College of MedicineSeoulRepublic of Korea Department of Biomedical Systems Informatics Yonsei University College of MedicineSeoulRepublic of Korea Department of Food and Nutrition Chungbuk National UniversityCheongjuRepublic of Korea Department of Internal Medicine Chungbuk National University HospitalCheongjuRepublic of Korea Medical Science Research Center Korea University College of MedicineSeoulRepublic of Korea

Dear Editor,Coronavirus disease 2019(COVID-19)is a novel respiratory infectious disease,caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),which led to a global *** vaccination is the best measure to overcome a pandemic,the immunogenicity of vaccines can be influenced by diverse factors,including intrinsic(age,sex,genetics,and comorbidities),extrinsic(diet,nutrition,and behavior),and vaccine-associated characteristics.

关键词： vaccines respiratory acute

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Controllable substitutional vanadium doping in wafer-scale molybdenum disulfide films

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Nano Research 2023年第2期16卷 3415-3421页

作者： Jihyung Seo Eunbin Son Jiha kim Sun-Woo kim jeong Min Baik hyesung Park Department of Materials Science and Engineering Graduate School of Semiconductor Materials and Devices EngineeringGraduate School of Carbon NeutralityLow Dimensional Carbon Materials CenterUlsan National Institute of Science and TechnologyUlsan 44919Republic of Korea School of Advanced Materials Science and Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea SKKU Institute of Energy Science and Technology Sungkyunkwan UniversitySuwon 16419Republic of Korea

Substitutional atomic doping of transition metal dichalcogenides(TMDs)in the chemical vapor deposition(CVD)process is a promising and effective strategy for modifying their physicochemical ***,the conventional CVD method only allows narrow-range modulation of the dopant concentration owing to the low reactivity of the ***,the growth of wafer-scale monolayer TMD films with high dopant concentrations is much more ***,we report a facile doping approach based on liquid precursor-mediated CVD process for achieving high vanadium(V)doping in the MoS_(2)lattice with excellent doping uniformity and *** lateral growth of the host MoS_(2)lattice and the reactivity of the V precursor were simultaneously improved by introducing an alkali metal halide as a reaction *** metal halide promoter enabled the wafer-scale synthesis of V-incorporated MoS_(2)monolayer film with excessively high doping *** excellent wafer-scale uniformity of the highly V-doped MoS_(2)film was confirmed through a series of microscopic,spectroscopic,and electrical analyses.

关键词： doping concentration reaction promoter substitutional doping transition metal dichalcogenides wafer-scale growth

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Unconventional assemblies of bisacylhydrazones:The role of water for circularly polarized luminescence

Aggregate

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Aggregate 2022年第5期3卷 185-193页

作者： hye Jin Cho Dong Yeun jeong Hwihyun Moon Taewoo kim You Kyoung Chung Yeongdong Lee Zonghoon Lee Joonsuk Huh Youngmin You Changsik Song Department of Chemistry Sungkyunkwan UniversitySuwonGyeonggi 16419Republic of Korea Division of Chemical Engineering and Materials Science Graduate Program in System Health Science and EngineeringEwha Womans UniversitySeoul 03760Republic of Korea Center for Multidimensional Carbon Materials Institute for Basic Science(IBS)Department of Materials Science and EngineeringUlsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea

Understanding the precise molecular arrangement of chiral supramolecular polymers is essential not only to comprehend complex superstructures like proteins and DNA but also for the development of next-generation optoelectronic materials,including materials displaying high-performance circularly polarized luminescence(CPL).Herein,we report the first chiral supramolecular polymer systems based on hydrazone–pyridinium conjugates comprising alkyl chains of different lengths,which afforded control of the apparent supramolecular *** supramolecular chirality is governed basically by the remote chiral centers of alkyl chains,helicity inversion was achieved by controlling the conditions under which the hydrazone building blocks underwent aggregation(i.e.,solvent compositions or temperature).More importantly,the addition of water to the system led to aggregationinduced hydrazone deprotonation,which resulted in a completely different selfassembly *** water molecules played an essential role,forming the assembly’s channel-like backbone,around which hydrazone molecules gathered as a result of hydrogen bonding *** co-assembly of an achiral hydrazone luminophore with the given supramolecular polymer system allowed the fabrication of a novel CPL-active hydrazone-based material exhibiting a high maximum value for the photoluminescence dissymmetry factor of -2.6×10^(-2).

关键词： circularly polarized luminescence(CPL) helicity control hydrazone self-assembly structural water supramolecular polymerization

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Anti-inflammatory Effects of Ampelopsis Japonica Root on Contact Dermatitis in Mice

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Chinese Journal of Integrative Medicine 2022年第8期28卷 719-724页

作者： Yoona Oh Hongbum Lee Beodeul Yang Sura kim Hyunwoo jeong Hyungwoo kim Division of Pharmacology School of Korean MedicinePusan National UniversityGyeongnam50612South Korea Department of Pathology College of Korean MedicineDongshin UniversityJeonnam58245South Korea

Objective:To investigate the anti-inflammatory potential of Ampelopsis japonica on contact dermatitis(CD).Methods:A total of 38 Balb/c mice were divided into 5 groups by using a random number table:normal mice(n=6),CID model mice(n=8),CD mice treated with 3 or 30 mg/kg of the ethanol extract of ***(EEAJ,n=8)and 7.5 mg/kg dexamethasone treated CD mice(DEX,n=8).CD was induced using topical application of 1-fluoro-2,4-dinitrofluorobenzene in *** and DEX were topically applied to the shaved skin of each mouse for 6 days,and the effects of EEAJ and DEX on skin lesions and color,histopathological abnormalities such as epidermal hyperplasia and immune cell infiltration,and tumor necrosis factor(TNF)-α,interleukin-6(IL-6),and monocyte chemoattractant protein-1(MCP-1)production were *** effects on changes in body weights and spleen/body weight ratio were also ***:EEAJ at 30 mg/kg significantly prevented scaling,erythema and enlargement of skin weight compared to using carbon *** also prevented epithelial hyperplasia and immune cell infiltrations induced by repeated application of DNFB(P<0.01).In addition,EEAJ significantly lowered levels of TNF-α,IL-6 and MCP-1(P<0.05 or P<0.01).The anti-inflammatory effects of EEAJ were similar to those of ***:*** may be a new therapeutic agent with the potential to reduce or replace corticosteroids and its mechanisms are closely related to regulation of TNF-α production.

关键词： Ampelopsis japonica Chinese medicine inflammation dermatosis contact dermatitis

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Effects of grain size and Al addition on the activation volume and strain-rate sensitivity of CoCrFeMnNi high-entropy alloy

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Journal of Materials Science & Technology 2023年第12期143卷 242-252页

作者： H.T.jeong W.J.kim Department of Materials Science and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul121-791Republic of Korea

The activation volume(V∗)and strain-rate sensitivity exponent(m)of CoCrFeMnNi and Al_(0.5)CoCrFeMnNi high entropy alloys(HEAs)with various grain sizes(ranging between 2.4 and 356μm)were measured at different strain rates and strain levels at room *** the strain rate decreased,the plastic strain decreased,and the grain size increased,V∗*** enhanced solid-solution strengthening by addition of aluminum decreased V∗.The Hassen plot was modified to capture the grain-size depen-dence of V∗by considering the grain-size dependence of the dislocation *** the plastic strain increased,the strain rate decreased,and the grain size decreased,m *** behavior of m could be quantitatively predicted by using equations derived for the grain-size-dependent V∗and flow *** difference in the grain-size dependence of m between conventional face centered cubic(FCC)metals and FCC HEAs over the nanograin size range could not be explained in terms of a relatively large Hall-Petch slope of the FCC HEAs compared with that of the FCC conventional metals,but was explainable in terms of a substantially higher probability of activation of grain-boundary diffusion-controlled grain-boundary-sliding mechanism at nanograin sizes in the FCC conventional metals than in the FCC HEAs.

关键词： Grain size High entropy alloys Activation volume Strain-rate sensitivity Solid solution

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Finite element analysis using elasto-visco-plastic self-consistent polycrystal model for E-form Mg sheet subjected to bending

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Journal of Magnesium and Alloys 2023年第4期11卷 1393-1407页

作者： Bohye Jeon Min-Seong kim Shi-Hoon Choi Youngung jeong Department of Materials Convergence and System Engineering Changwon National UniversityChangwon-siGyeongnamRepublic of Korea Center for Energy Materials Research Korea Institute of Science and TechnologySeoulRepublic of Korea Department of Advanced Components and Materials Engineering Sunchon National UniversitySuncheon-siJeollanam-doRepublic of Korea School of Materials Science and Engineering Changwon National UniversityChangwon-siGyeongnamRepublic of Korea

The mechanical behavior of a magnesium alloy E-form under bending was investigated using the elasto-visco-plastic polycrystal model(ΔEVPSC) and its finite element(FE) implementation(ΔEVPSC-FE) developed in jeong et al. and jeong and Tomé. The crystallographic orientation distribution(COD) obtained from X-ray diffraction was used to represent the initial texture, and the Voce hardening parameters were calibrated by fitting the uniaxial tension and the compression flow stress curves. A quasi-static FE analysis of a miniaturized V-bending operation was conducted using the ΔEVPSC-FE model. The bending induced an inhomogeneous stress response along the through-thickness and the lateral directions, which was well captured by the model. Moreover, the predictive capability of the model was validated by comparing with various experimental results such as(1) force vs. displacement curves;(2) the through-thickness variations in the twin volume fraction;and(3) the changes in crystallographic texture as a function of displacement. Additional bending simulation was performed using an isotropic texture, the result of which suggests that the potential improvement in bendability of the magnesium alloy is attainable by weakening the initial texture. Moreover, the simulation results imply that the crystallographic texture, which may affect the twin activation across the thickness direction, plays a significant role in the shifting direction of the neutral layer.

关键词： FEM Texture V-bending Polycrystal Magnesium Elasto-visco-plasticity

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Hydrogen spillover in nonreducible oxides:Mechanism and catalytic utilization

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Nano Research 2022年第12期15卷 10357-10365页

作者： Songhyun Lee Hyungjun kim Ryong Ryoo jeong Young Park Minkee Choi Charles D.Davidson School of Chemical Engineering Purdue UniversityWest LafayetteIndiana47907USA Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea Department of Chemistry Korea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea KENTECH Laboratory for Chemical Environmental and Climate TechnologyKorea Institute of Energy Technology(KENTECH)200 Hyeoksin-roNaju58330Republic of Korea Center for Nanomaterials and Chemical Reactions Institute for Basic Science(IBS)Daejeon34141Republic of Korea

Hydrogen(H)spillover in nonreducible oxides such as zeolites and Al2O3 has been a highly controversial phenomenon in heterogeneous *** industrial catalysts are predominantly prepared using these materials as supports,it is important to understand the mechanism and catalytic functions of H spillover on their *** the past decade,fundamental studies on zeolite-encapsulated metal catalysts have revealed that H spillover and reverse spillover can be utilized in the design of hydrogenation and dehydrogenation catalysts with improved *** experimental and theoretical studies have indicated that H spillover can occur in nonreducible oxides when they possess substantial acid sites that aid the surface migration of active *** the present review,we will discuss the possible mechanisms of H spillover in nonreducible oxides and the unique opportunities of using this phenomenon for the design of advanced hydroprocessing catalysts.

关键词： hydrogen spillover nonreducible oxides zeolites hydroprocessing catalysts

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