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A novel AIE-NIR-II nano-contrast agent for monitoring and evaluating kidney transplant

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National Science Review 2024年第4期11卷 15-16页

作者： Yuan-Yuan Zhao Bokyeong hwang Yeju Lee Juyoung yoon Department of Chemistry and Nanoscience Ewha Womans University

Kidney transplantation is a life-saving approach for treating end-stage renal diseases (ESRDs)[1]. However, the scarcity of donor kidneys has resulted in an increasing number of ESRD patients being stuck on the transp... 详细信息

关键词： TIME

Highly Elastic,Bioresorbable Polymeric Materials for Stretchable,Transient Electronic Systems

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Nano-Micro Letters 2024年第6期16卷 1-13页

作者： Jeong‑Woong Shin Dong‑Je Kim tae‑Min Jang Won Bae Han Joong Hoon Lee Gwan‑Jin Ko Seung Min Yang Kaveti Rajaram Sungkeun Han Heeseok Kang Jun Hyeon Lim Chan‑Hwi Eom Amay J.Bandodkar Hanul Min Suk‑Won hwang KU‑KIST Graduate School of Converging Science and Technology Korea University145 Anam‑roSeongbuk‑guSeoul 02841Republic of Korea SK Hynix 2091Gyeongchung‑daeroBubal‑eupIcheon‑siGyeonggi‑do 17336Republic of Korea Hanwha Systems Co. Ltd.188Pangyoyeok‑roBundang‑guSeongnam‑siGyeonggi‑do 13524Republic of Korea Department of Electrical and Computer Engineering North Carolina State UniversityRaleighNC 27606USA Center for Advanced Self‑Powered Systems of Integrated Sensors and Technologies(ASSIST) North Carolina State UniversityRaleighNC 27606USA Department of Integrative Energy Engineering Korea University145 Anam‑roSeongbuk‑guSeoul 02841Republic of Korea Biomaterials Research Center Korea Institute of Science and Technology(KIST)5 Hwarang‑ro 14‑gilSeongbuk‑guSeoul 02792Republic of Korea Semiconductor R&D Center Samsung Electronics Co.Ltd.Hwaseong‑siGyeonggi‑do 18448Republic of Korea Center for Advanced Biomolecular Recognition Biomedical Research DivisionKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea

Substrates or encapsulants in soft and stretchable formats are key components for transient,bioresorbable electronic systems;however,elastomeric polymers with desired mechanical and biochemical properties are very limited compared to nontransient counterparts.Here,we introduce a bioresorbable elastomer,poly(glycolide-co-ε-caprolactone)(PGCL),that contains excellent material properties including high elongation-at-break(<1300%),resilience and toughness,and tunable dissolution behaviors.Exploitation of PGCLs as polymer matrices,in combination with conducing polymers,yields stretchable,conductive composites for degradable interconnects,sensors,and actuators,which can reliably function under external strains.Integration of device components with wireless modules demonstrates elastic,transient electronic suture system with on-demand drug delivery for rapid recovery of postsurgical wounds in soft,time-dynamic tissues.

关键词： Biodegradable elastomer Conductive polymer composites Biomedical device Transient electronics

Curvature range measurements of the arcuate fasciculus using diffusion tensor tractography

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Neural Regeneration Research 2013年第3期8卷 244-250页

作者： Dong Hoon Lee Cheol Pyo Hong Yong Hyun Kwon yoon tae hwang Joong Hwi Kim Ji Won Park Department of Radiological Science College of Health ScienceYonsei University Department of Physical Therapy Yeungnam College of Science & Technology Department of Physical Therapy Gangneung Yeongdong College Department of Physical Therapy College of Medical ScienceCatholic University of DaeguGyeongsan-si

Because Broca＇s area and Wernicke＇s area in the brain are connected by the arcuate fasciculus, understanding the anatomical location and morphometry of the arcuate fasciculus can help in the treatment of patients with aphasia. We measured the horizontal and vertical curvature ranges of the arcuate fasciculus in both hemispheres in 12 healthy subjects using diffusion tensor tractography. In the right hemisphere, the direct curvature range and indirect curvature range values of the arcuate fasciculus horizontal part were 121.13 ± 5.89 and 25.99 ± 3.01 degrees, respectively, and in the left hemisphere, the values were 121.83 ± 5.33 and 27.40 ± 2.96 degrees, respectively. In the right hemisphere, the direct curvature range and indirect curvature range values of the arcuate fasciculus vertical part were 43.97 ± 7.98 and 30.15 ± 3.82 degrees, respectively, and in the left hemisphere, the values were 39.39 ± 4.42 and 24.08 ± 4.34 degrees, respectively. We believe that the measured curvature ranges are important data for localization and quantitative assessment of specific neuronal pathways in patients presenting with arcuate fasciculus abnormalities.

关键词： neural regeneration neuroimaging clinical practice diffusion tensor tractography diffusion tensor imaging arcuate fasciculus direct curvature range indirect curvature range anatomical location quantitative information aphasia Broca’s area Wernicke’s area arched fiber grant-supported paper photographs-containing paper neuroregeneration

Temporary severe oculomotor nerve palsy after reconstruction of orbital medial wall fracture: a case report of nonfamiliar complication

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International Journal of Ophthalmology(English edition) 2022年第6期15卷 1032-1034页

作者： Yeon Woong Chung tae yoon La Department of Ophthalmology St.Vincent's HospitalCollege of Medicinethe Catholic University of KoreaSuwon 16247Republic of Korea

Dear Editor, Commonly known complications following reconstruction of an orbital fracture include diplopia, hemorrhage, and displacement or infection of the orbital implant, and some studies have reported ptosis cause... 详细信息

关键词： fracture orbital dip

A new analytical approach for identifying market contagion

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Financial Innovation 2022年第1期8卷 1097-1131页

作者： Hee Soo Lee tae yoon Kim Department of Business Administration Sejong University209 Neungdong-ro Gwangjin-guSeoul 05006Korea Department of Statistics Keimyung University1095 Dalgubeol-daeroDaegu 704-701Korea.

This study proposed a new analytical approach to identify the excessive comovement of two markets as contagion.This goal is achieved by linking latent-factor and single-equation error correction models and evaluating the breaks in the short-and long-term relationships and correlatedness in the linked model.The results demonstrated that a short-term relationship representing the market speed ratio between two markets plays a key role in contagion dynamics.When a long-term relationship or correlatedness is broken(comovement change)due to a break in the short-term relationship(market speed ratio),contagion is highly likely and should be formally declared.Bayesian posterior probabilities were calculated to determine the cause.Furthermore,this study applied this analytical Bayesian approach to empirically test the contagion effects of the U.S.stock market during the global financial crisis between 2007 and 2009 using 22 developed equity markets.

关键词： Contagion test Market integration Bayesian approach Comovement Market speed ratio

A case of unsuspected trans-orbital-cranial penetrating injury by a wooden chopstick in a one-year-old infant

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International Journal of Ophthalmology(English edition) 2022年第3期15卷 523-526页

作者： Yeon Woong Chung Soon Young Lee tae yoon La Department of Ophthalmology St.Vincent’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 16247Korea

Dear Editor,Transorbital penetrating injury is one emergency faced by ophthalmologists during primary care that requires special attention because it can lead to serious ophthalmic and neurological sequela.Of all head injuries, intracranial penetrating injuries occur at a low rate of 0.4%[1], and transorbital-cranial penetrating injuries are even more rare, but do occur more frequently in young children than in adults[2-3].

关键词： injuries infant orbital

Industry cluster,organizational diversity,and innovation

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International Journal of Innovation Studies 2023年第3期7卷 205-213页

作者： Haewon Kim Seung-June hwang Woojin yoon Department of Strategic Management Hanyang University Graduate SchoolSeoul04763South Korea College of Business and Economics Hanyang University ERICA CampusAnsan-siGyeonggi-do15588South Korea

This study explains the factors that enhance the innovation performance of a cluster by focusing on its knowledge spillovers.Based on the literature on industry clusters,organizational diversity,and innovation,we suggest testable propositions.Specifically,this study suggests that two types of organizational diversity(diversity of nationality and organization type)positively impact the innovation performance of the cluster.In addition,the cluster network size and embeddedness have a positive moderating effect on the relationship between organizational diversity and innovation performance.This study aims to determine whether the innovation performance of industry clusters varies depending on the degree of diversity of organizations in the cluster and whether their network characteristics may strengthen the positive effect of organizational diversity.This study contributes to the research stream related to industry clusters and organizational diversity and provides practical implications to practitioners participating in creating and growing such clusters.

关键词： Industry cluster Innovation Organizational diversity Network size Embeddedness

Mechanical densification synthesis of single-crystalline Ni-rich cathode for high-energy lithium-ion batteries

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Journal of Energy Chemistry 2023年第4期79卷 562-568页

作者： Gwonsik Nam Jaeseong hwang Donghun Kang Sieon Oh Sujong Chae Moonsu yoon Minseong Ko Division of Convergence Materials Engineering Pukyong National UniversityBusan 48547Republic of Korea Namyang R&D Center Hyundai Motor CompanyHwaseong 18280Republic of Korea Division of Industrial Chemistry and Polymer Engineering Pukyong National UniversityBusan 48547Republic of Korea Department of Nuclear Science and Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA

The intergranular microcracking in polycrystalline Ni-rich cathode particle is led by anisotropic volume change and stress corrosion along grain boundary,accelerating battery performance decay.Herein,we have suggested a simple but advanced solid-state method that ensures both uniform transition metal distribution and single-crystalline morphology for Ni-rich cathode synthesis without sophisticated coprecipitation.Pelletization-assisted mechanical densification(PAMD)process on solid-state precursor mixture enables the dynamic mass transfer through the increased solid-solid contact area which facilitates the grain growth during sintering process,readily forming micro-sized single-crystalline particle.Furthermore,the improved chemical reactivity by a combination of capillary effect and vacancyassisted diffusion provides homogeneous element distribution within each primary particle.As a result,single-crystalline Ni-rich cathode with PAMD process has eliminated a potential evolution of intergranular cracking,thus achieving superior energy retention capability of 85%over 150 cycles compared to polycrystalline Ni-rich particle even after high-pressure calendering process(corresponding to electrode density of~3.6 g cm^(-3))and high cut-off voltage cycling.This work provides a concrete perspective on developing facile synthetic route of micron-sized single-crystalline Ni-rich cathode materials for high energy density lithium-ion batteries(LIBs).

关键词： Lithium-ion batteries Ni-rich cathode materials Mechanical densification Solid-state synthesis

Publisher Correction to:Highly Elastic,Bioresorbable Polymeric Materials for Stretchable,Transient Electronic Systems

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Nano-Micro Letters 2024年第8期16卷 417-417页

作者： Jeong‑Woong Shin Dong‑Je Kim tae‑Min Jang Won Bae Han Joong Hoon Lee Gwan‑Jin Ko Seung Min Yang Kaveti Rajaram Sungkeun Han Heeseok Kang Jun Hyeon Lim Chan‑Hwi Eom Amay JBandodkar Hanul Min Suk‑Won hwang KU‑KIST Graduate School of Converging Science and Technology Korea University145 Anam‑roSeongbuk‑guSeoul 02841Republic of Korea SK Hynix 2091Gyeongchung‑daeroBubal‑eupIcheon‑siGyeonggi‑do 17336Republic of Korea Hanwha Systems Co. Ltd.188Pangyoyeok‑roBundang‑guSeongnam‑siGyeonggi‑do 13524Republic of Korea Department of Electrical and Computer Engineering North Carolina State UniversityRaleighNC 27606USA Center for Advanced Self‑Powered Systems of Integrated Sensors and Technologies(ASSIST) North Carolina State UniversityRaleighNC 27606USA Department of Integrative Energy Engineering Korea University145 Anam‑roSeongbuk‑guSeoul 02841Republic of Korea Biomaterials Research Center Korea Institute of Science and Technology(KIST)5 Hwarang‑ro 14‑gilSeongbuk‑guSeoul 02792Republic of Korea Semiconductor R&D Center Samsung Electronics Co.Ltd.Hwaseong‑siGyeonggi‑do 18448Republic of Korea Center for Advanced Biomolecular Recognition Biomedical Research DivisionKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea

Due to typesetting mistake,Hanul Min was missed to be denoted as a corresponding author in the article.The type-setter apologizes for this.The original article has been corrected.Open Access This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use,sharing,adaptation,distribution and reproduction in any medium or format,as long as you give appropriate credit to the original author(s)and the source,provide a link to the Creative Commons licence,and indicate if changes were made.The images or other third party material in this article are included in the article’s Creative Commons licence,unless indicated otherwise in a credit line to the material.If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use,you will need to obtain permission directly from the copyright holder.

关键词： Creative Elastic Highly