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Carbon Energy 2023年第7期5卷 27-37页

作者： chang-Mok Oh Sujung park Jihoon Lee Sung Heum park Shinuk Cho In-Wook Hwang Advanced Photonics Research Institute Gwangju Institute of Science and TechnologyGwangjuRepublic of Korea Department of Physics and Energy Harvest Storage Research Center University of UlsanUlsanRepublic of Korea Department of Physics Pukyong National UniversityBusanRepublic of Korea

Bulk heterojunction(BHJ)composites show improved power conversion efficiencies when optimized in terms of morphology using various film processing methods.A reduced carrier recombination loss in an optimized BHJ was characterized ***,the driving force that leads to this reduction was not clearly *** this study,we focus on the decreased carrier recombination loss and its driving force in optimized nonfullerene acceptor-based PTB7-Th:IEICO-4F BHJ *** demonstrate that the optimized BHJ shows deactivation in the sub-nanosecond nongeminate carrier recombination *** driving force for this deactivation was determined to be the improved interchain hole delocalization between the *** enhanced interchain hole delocalization was observed using steady-state photoinduced absorption(PIA)*** particular,increased splitting between the polaron PIA bands was ***,improved interchain hole delocalization was observed for other state-of-the-art BHJ materials,including D18:Y6 with optimized morphologies.

关键词： bulk heterojunction interchain hole delocalization nonfullerene acceptor photoinduced absorption spectroscopy solar cell

Improvements of model-test method for cavitation-induced pressure fluctuation in marine propeller

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Journal of Hydrodynamics 2013年第4期25卷 599-605页

作者： LEE Jeung-Hoon HAN Jae-Moon park Hyung-Gil SEO Jong-soo Samsung Ship Model Basin (SSMB) Marine Research Institute Samsung Heavy Industries Science Town

Although the prediction of propeller cavitation-induced pressure fluctuation strongly depends on the model-scalemeasure- ment in a cavitation tunnel, there is still a lack of correlation with full-scale data. This paper deals with the enhancement of such a correlation deficiency by improving the conventional model-test technique, two majors of which are in the following. One is to take into account the boundary layer effect of wooden fairing plate at the ceiling of water cavitation tunnel. The other is to avoid the reso- nance frequency range of model-ship via adjusting the revolution speed of model propeller. Through a case study, for which both model and full-scale test data are available, the improved method in this study shows its validness, and furthermore a close correla- tion with full scale measurement.

关键词： cavitation boundary layer resonance

The Role of Relative Spinal Motion during Feline Galloping for Speed Performance

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Journal of Bionic Engineering 2014年第4期11卷 517-528页

作者： Young Kook Kim Jongwon park Byungho Yoon Kyung-soo Kim soohyun Kim Robotics Program Korea Advanced Institute of Science and Technology (KAIST) Daejeon 305-701 Republic of Korea Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 305-701 Republic of Korea

Felines use their spinal column to increase their running speed at rapid locomotion performance. However, its motion profile behavior during fast gait locomotion has little attention. The goal of this study is to examine the relative spinal motion profile during two different galloping gait speeds. To understand this dynamic behavior trend, a dynamic motion of the feline animal （Felis catus domestica） was measured and analyzed by motion capture devices. Based on the experiments at two different galloping gaits, we observed a significant increase in speed （from 3.2 m.s-1 to 4.33 m.s-1） during the relative motion profile synchronization between the spinal （range： 118.86~ to 168.00~） and pelvic segments （range： 46.35~ to 91.13~） during the hindlimb stance phase （time interval： 0.495 s to 0.600 s）. Based on this discovery, the relative angular speed profile was applied to understand the possibility that the role of the relative motion match during high speed locomotion generates bigger ground reaction force.

关键词： feline galloping galloping gait pattern relative spinal motion speed performance phase match

Cavernous mesenteric lymphangiomatosis mimicking metastasis in a patient with rectal cancer:A case report

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World Journal of Gastroenterology 2009年第31期15卷 3947-3949页

作者： Seong Su Hwang Hyun Joo Choi soo Youn park Department of Radiology St.Vincent's HospitalCollege of MedicineThe Catholic University of Korea Department of Pathology St.Vincent's HospitalCollege of MedicineThe Catholic University of Korea

Lymphangioma usually occurs in children and usually involves the skin. Mesenteric lymphangioma is extremely rare in adults. Typically, lymphangioma appears on computed tomography (CT) as a lower attenuation of a cystic mass, however, some cases appear to be a solid mass. We describe the CT and 18F-FDG positron emission tomography/CT appearance in a case of jejunal and mesenteric cavernous lymphangi-omatosis mimicking metastasis in an adult patient with rectal cancer.

关键词： Lymphangioma Lymphangiomatosis Mesentern/ Small intestine Computed tomography 18F-FDG positron emission tomography/computed tomography

Effect of Sub-T_g Annealing on the Corrosion Resistance of the Cu–Zr Amorphous Alloys

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Acta Metallurgica Sinica(English Letters) 2018年第3期31卷 273-280页

作者： Sang-soo Shin Hong-Kyu Kim Jae-Chul Lee Ik-Min park Department of Materials Science and Engineering Pusan National University Advanced Analysis Center Korea Institute of Science and Technology Department of Materials Science and Engineering Korea University

Despite the economy of material cost and excellent toughness of Cu-based amorphous alloys,especially CusoZrso,their poor corrosion resistance to a chloride medium limits their widespread *** this study,corrosion tests were performed on the CusoZrso amorphous alloy with different degrees of short-range order,which were prepared by annealing below the glass transition temperature（Tg）.It was found that the corrosion resistance of amorphous alloys is improved to a significant level when the alloys were heated below *** studies showed that thermally activated relaxation process of created disorder,which occurs during sub-Tg annealing,is responsible for the improvement in the corrosion *** dynamics simulations performed on the Cu-Zr amorphous alloys demonstrated that the relaxation process of the alloys is associated with the formation of energetically stable icosahedra and icosahedron-like *** study highlights the effects of sub-Tg annealing on the improvement in the corrosion resistance of the amorphous alloys from the viewpoint the relaxation process of the short-range orders.

关键词： Amorphous alloys Corrosion Annealing Molecular dynamics Electrochemical performance

Preface: Nano/Micro Structures in Application of Computational Mechanics

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Computer Modeling in Engineering & Sciences 2019年第8期120卷 235-237页

作者： chang-Chun Lee Nien-Ti Tsou Taek-soo Kim Department of Power Mechanical Engineering National Tsing Hua UniversityHsinchu 30013Taiwan Department of Material Science and Engineering National Chiao Tung UniversityHsinchu 30013Taiwan Department of Mechanical Engineering KAISTDaejeon 34141Korea

Many important issues of structures,such as lattice mismatch,compatibility,orientation,evolution,phase transition,surfaces,interfaces,defects,and domain engineering,have attracted considerable *** corresponding mechanisms of these issues have not been fully *** mechanics has been widely used to investigate such complexities in nano/microstructures in recent *** this special issue,leading experts in their respective fields are invited to present their new insight into the theoretical calculation and modeling of nano/*** articles are collected.A brief introduction on each article is provided below.

关键词： compatibility insight mechanisms

Numerical analysis of vortex core phenomenon during draining from cylinder tank for various initial swirling speeds and various tank and drain port sizes

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Journal of Hydrodynamics 2013年第2期25卷 183-195页

作者： SOHN chang Hyun SON Jong Hyeon park Il Seouk School of Mechanical Engineering Kyungpook National University

A dimple appears on a free surface while rotating a cylinder tank filled with liquid. The dimple starts to concentrically deeper to a drain port at the bottom center of the tank. Over time, the dimple penetrates the drain port, a free surface forms a long and slender string shape in the tank, and a so-called vortexing （air core） phenomenon occurs. The generation of a vortex core depends on the size of the tank and drain port, and on the properties of the liquid in the tank. In this study, the liquid level and the time at which the vortex core is initially generated are numerically investigated using different values of tank diameter, drain port diameter, and ini- tial tank rotational speeds. Instead of a full three-dimensional analysis, a two-dimensional axisymmetric simulation is conducted. The momentum conservation equation in the circumferential direction is additionally solved in the two-dimensional mesh system. Several non-dimensional variables are created： the ratio of the air core generation distance and tank diameter, the diameter ratio of the tank and drain port, the rotational Reynolds number, the rotational Froude number, and the rotational Weber number. Finally, the non-dimensional air core generation distance is correlated with the other non-dimensional parameters.

关键词： air core vortex core dip penetration vortexing draining

Microstructure of fast tool servo machining on copper alloy

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中国有色金属学会会刊：英文版 2012年第S3期22卷 820-824页

作者： Hong LU soo-chang CHOI Sang-min LEE Deug-woo LEE Department of Nano Fusion Technology Pusan National University Korea Institute of Machinery & Materials Department of Nano Mechatronics Engineering Pusan National University

The development of the fast tool servo (FTS) for precision machining was *** micron machining performance of a piezoelectric-assisted FTS on copper alloy was *** results indicate that the quality of the microstructure depends mainly on two important factors:the cutting speed (or spindle speed) and the driving frequency of the *** excessive driving frequency increases the formation of *** effect of the clearance angle of the diamond tool on the microstructure machining precision was also investigated.

关键词： fast tool servo microstructure piezoelectric diamond machining copper alloy

The effectiveness of emotion-focused art therapy on the resilience and self-image of emergency physicians

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World Journal of Emergency Medicine 2022年第6期13卷 479-484页

作者： soo Kyung Eo Chanwoong Kim Kyung Hye park Eun Kyung Eo Graduate School of Art Therapy at CHA University Pocheon 11160Republic of Korea Department of Emergency Medicine Chung-Ang University College of MedicineSeoul 06974Republic of Korea Department of Medical Education Yonsei University Wonju College of MedicineWonju 26426Republic of Korea Department of Emergency Medicine Wonju Severance Christian HospitalWonju 26426Republic of Korea Department of Emergency Medicine Soonchunhyang University Bucheon HospitalBucheon 14584Republic of Korea

INTRODUCTION Resilience refers to the quality of being able to overcome adversity.[1]Studies conducted in the United States[2]and China[3]following the 2019 coronavirus disease(COVID-19)pandemic reported reduced resilience levels among medical *** resilience levels are associated with low burnout levels among residents.[4]Physician burnout affects patients’safety and quality of care.[5]In particular,emergency physicians(EPs)are more prone to exhaustion or poor resilience,as their turnover intention tends to be higher.[6]Therefore,improving EPs’resilience is imperative.

关键词： image physician overcome

ASpediaFI:Functional Interaction Analysis of Alternative Splicing Events

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Genomics, Proteomics & Bioinformatics 2022年第3期20卷 466-482页

作者： Kyubin Lee Doyeong Yu Daejin Hyung soo Young Cho Charny park Bioinformatics Branch Research InstituteNational Cancer CenterGoyang 10408Republic of Korea

Alternative splicing(AS)regulates biological processes governing phenotypes and *** AS(DAS)gene test methods have been developed to investigate important exonic expression from high-throughput ***,the DAS events extracted using statistical tests are insufficient to delineate relevant biological *** this study,we developed a novel application,Alternative Splicing Encyclopedia:Functional Interaction(ASpediaFI),to systemically identify DAS events and co-regulated genes and *** establishes a heterogeneous interaction network of genes and their feature nodes(i.e.,AS events and pathways)connected by coexpression or pathway gene set ***,ASpediaFI explores the interaction network using the random walk with restart algorithm and interrogates the proximity from a query gene ***,ASpediaFI extracts significant AS events,genes,and *** evaluate the performance of our method,we simulated RNA sequencing(RNA-seq)datasets to consider various conditions of sequencing depth and sample *** performance was compared with that of other ***,we analyzed three public datasets of cancer patients or cell lines to evaluate how well ASpediaFI detects biologically relevant *** exhibits strong performance in both simulated and public *** integrative approach reveals that DAS events that recognize a global co-expression network and relevant pathways determine the functional importance of spliced genes in the *** is publicly available at https://***/packages/ASpediaFI.

关键词： Alternative splicing RNA-seq Heterogeneous interaction network Random walk with restart Gene set enrichment analysis