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Journal of Geoscience and Environment Protection 2013年第3期1卷 12-17页

作者： Youngbeom Cheon Cheol Woo song son kap lee Jong-Sun Kim Moon son Department of Geological Sciences Pusan National University Busan South Korea

This study focuses on the geometry and kinematics of the Sinnyeong Fault which is the most conspicuous fault among the WNW-trending Gaeum Fault System in the Gyeongsang Basin,SE Korea. The fault is traced for over ca.70 kmand has a consistent WNW-trending strike with a nearly vertical dip. It has an asymmetric fault damage zone of several meters to several tens of meters in width and a several meter-thick fault core. Its main movement is interpreted as sinistral-reverse oblique-slip or sinistral strike-slip under NE-SW compressional stress regime, although it could have experienced other faultings with different senses before/after this movement. Cylindrical folds, having the NW-trending fold axes of low angle plunge, are only observed along the southern damage zone of the fault with a continuous narrow width of several tens of meters. It is thus interpreted that the formation of the folds and sinistral movement of the fault were almost contemporaneously generated due to the concentration of the regional NE-SW compressional stress along pre-existing WNW-trending faults or densely populated fracture zone in a relatively stable intraplate region.

关键词： Sinnyeong Fault Sinistral-Reverse Oblique-Slip Compressional Stress Pre-Existing Fault

Micro Gas Sensor Array for Monitoring Highly Toxic Gases

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稀有金属材料与工程 2006年第A03期35卷 9-12页

作者： Duk-Dong lee Nak-Jin Choi kap-Duk song School of Electronic Engineering & Computer Science Kyungpook National UniversitySankyuk-Dong 1370PukguDaegu 702-701Korea Future Technology Research Division Electronics and Telecommunications Research InstituteGajeong-Dong 161Yuseng-GuDaejoeng 305-350Korea

Recently,the possibility of a disaster due to the improper use of highly toxic gases which are known as agents throughout the world has been ***,the development of technology for countermeasure against CWA has been highly *** this study,thick film SnO_2-based gas sensing devices were prepared and the sensing properties for the four different kinds of simulants such as dimethyl methyl phosphonate (DMMP),acetonitrile,dichloromethane and dipropylene glycol methyl ether have been *** a micro sensor array consists of six devices was prepared using MEMS technology to provide high selective and reliable sensing system for the detection of chemical warfare *** micro gas sensor array prepared showed good sensitivity and selectivity to CWA.

关键词： micro sensor array highly toxic gases sensitivity

Combating Drug Resistance in Colorectal Cancer Using Herbal Medicines

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Chinese Journal of Integrative Medicine 2021年第7期27卷 551-560页

作者： lee Ga-Young lee Jin-Seok son Chang-Gue lee Nam-Hun Department of Clinical Oncology Cheonan Korean Medicine Hospital of Daejeon UniversityCheonan31099Republic of Korea Liver&Immunology Research Center Dunsan Korean Medicine Hospital of Daejeon UniversityDaejeon35235Republic of Korea Department of Internal Medicine Graduated School of Korean MedicineUniversity of DaejeonDaejeon34520Republic of Korea

Colorectal cancer(CRC)is one of the most prevalent and lethal cancer types around the *** of the CRC patients are treated with chemotherapeutic drugs alone or ***,up to 90%of metastatic cancer patients experience the failure of treatment mostly because of the acquired drug resistance,which can be led to multidrug resistance(MDR).In this study,we reviewed the recent literature which studied potential CRC MDR reversal agents among herbal medicines(HMs).Among abundant HMs,6 single herbs,Andrographis paniculata,Salvia miltiorrhiza,Hedyotis diffusa,Sophora flavescens,Curcuma longa,Bufo gargarizans,and 2 formulae,Pien Tze Huang and Zhi Zhen Fang,were found to overcome CRC MDR by two or more different mechanisms,which could be a promising candidate in the development of new drugs for adjuvant CRC chemotherapy.

关键词： colorectal cancer drug resistance herbal medicine

Deformation prediction of porcelain-enameled steels with strain history by press forming and high-temperature behavior of coating layer

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中国有色金属学会会刊：英文版 2012年第S3期22卷 838-844页

作者： Young-Ki son Chan-Joo lee Jung-Min lee Byung-Min KIM School of Mechanical Engineering Pusan National University Dongnam Regional Division Korea Institute of Industrial Technology

Porcelain enamel coatings were widely applied for the protection of steel products because they offered high corrosion protection,resistance to heat and abrasion,high hardness,hygiene and ease of *** typical process to produce enameled steels is roughly divided into two stages:the first stage consists of a forming process to give the desired shape to a steel substrate,and the second stage consists of a firing process to bond enamel frits on the *** firing process requires a high temperature above 800 °C,which may lead to austenitic transformation and severe thermal deformation of the steel *** aim of this study is to develop a finite element analysis (FE analysis) technique to predict the mechanical and thermal deformations of the enameled steels during forming and any further enameling process,including *** FE analysis involves analyzing the strain history of the steel substrate,which comprises the stress and thickness distributions of the substrate and its deformed shape,and the high-temperature behavior of the enamel coating *** validity of the FE analysis is verified through the U-bending test and firing test with various numbers and positions of enamel coating layers on the *** results reveal that the FE analysis results agree well with the experimental results with 8% error.

关键词： porcelain enamel firing process finite element analysis enameled steel thermal deformation

Structural stability estimation of whirling unit

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中国有色金属学会会刊：英文版 2009年第B09期19卷 202-208页

作者： son-Jae HWAN Han-Chang WOO lee-Sang RYONG lee-Young MOON Daegu Machinery Institute of Component & Materials Foundation Department of Automobile Yeungnam College of Science & Technology Department of Mechanical Engineering Kyung pook National University

Whirling is a cutting process in which a series of cutting edges on whirling ring remove material by turning over a rotating workpiece. In this study static and dynamic stability of whirling unit was estimated by using ADAMS and NASTRAN softwares. Each maximum force acting on the bearing attached to the spindle assembly and the cutting tool attached to the whirling ring with the rotating speed of 6 000 r/min was 235 N and 902 N respectively. The maximum stress of 0.74 MPa on the base frame is far smaller than the yield strength of 282 MPa. The calculated natural frequency of 148 Hz of the system is far from the frequency of the driving speed of 6 000 r/min. The experimentally obtained maximum cutting force of 792 N is smaller than that of calculated value. And the experimentally obtained natural frequency of 118 Hz is beyond the driving speed of 6000 r/min. From above results it can be judged that the whirling system is statically and dynamically stable.

关键词：旋转工件稳定性评价 NASTRAN软件动态稳定性结构单元固有频率行车速度

3D printed energy devices:generation,conversion,and storage

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Microsystems & Nanoengineering 2024年第4期10卷 23-41页

作者： Jin-ho son Hongseok Kim Yoonseob Choi Howon lee Department of Mechanical Engineering Institute of Advanced Machines and DesignSeoul National UniversitySeoulRepublic of Korea

The energy devices for generation,conversion,and storage of electricity are widely used across diverse aspects of human life and various ***-dimensional(3D)printing has emerged as a promising technology for the fabrication of energy devices due to its unique capability of manufacturing complex shapes across different length scales.3D-printed energy devices can have intricate 3D structures for significant performance enhancement,which are otherwise impossible to achieve through conventional manufacturing ***,recent progress has witnessed that 3D-printed energy devices with micro-lattice structures surpass their bulk counterparts in terms of mechanical properties as well as electrical *** existing literature focuses mostly on specific aspects of individual printed energy devices,a brief overview collectively covering the wide landscape of energy applications is *** review provides a concise summary of recent advancements of 3D-printed energy *** classify these devices into three functional categories;generation,conversion,and storage of energy,offering insight on the recent progress within each ***,current challenges and future prospects associated with 3Dprinted energy devices are discussed,emphasizing their potential to advance sustainable energy solutions.

关键词： 3D printing 3D-printed energy device Energy generation device Energy conversion device Energy storage device

Extraordinary Ultrahigh-Capacity and Long Cycle Life Lithium-Ion Batteries Enabled by Graphitic Carbon Nitride-Perylene Polyimide Composites

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Energy & Environmental Materials 2023年第6期6卷 199-226页

作者： Michael Ruby Raj Jungwon Yun Dong-kyu son Gibaek lee Advanced Energy Materials Design Lab School of Chemical EngineeringYeungnam University38541Gyeongsan-siKorea William G.Lowrie Chemical and Biomolecular Engineering The Ohio State UniversityColumbus OH 43210USA

Graphitic carbon nitride(g-C_(3)N_(4))is widely used in organic metal-ion batteries owing to its high porosity,facile synthesis,stability,and high-rate ***,pristine g-C_(3)N_(4)nanosheets exhibit poor electrical conductivity,irreversible metal-ion storage capacity,and short-term cycling owing to their high concentration of graphitic-N ***,a series of 3,4:9,10-perylenetetracarboxylic diimide-coupled g-C_(3)N_(4)composite anode materials,CN-PI_(x)(x=0.2,0.5,0.75,and 1),was investigated,which exhibited an unusually high surface nitrogen content(23.19-39.92 at.%)and the highest pyridinic-N,pyrrolic-N,and graphitic-N contents reported to *** CN-PI_(1)anode delivers an unprecedented and continuously increasing ultrahigh discharging capacity of exceeding 8400 mAh g^(-1)(1.96 mWh cm^(-2))at 100 mA g^(-1)with high specific energy density(E_(sp))of~7700 Wh kg^(-1)and the volumetric energy density(E_(v))of~14956 Wh L-1 and an excellent long-term stability(414 mAh g^(-1)or 0.579 mWh cm^(-2)at 1 A g^(-1)).Furthermore,the activation of the CN-PI_(x)electrodes contributes to their superior electrochemical performance,resulting from the fact that the Li+is not only stored in the CN-PI_(x)composites but also CN-PI_(x)activated the Li^(0)adlayer on the CN-PI_(1)-Cu heterojunction as an SEI layer to avoid the direct contact of Li^(0)phase and the *** CN-PI_(1)full cell with LiCoO_(2)as the cathode delivers a discharge capacity of~587 mAh g^(-1)at a 1 A g^(-1)after 250 cycles with a Coulombic efficiency nearly 99%.This study provides a strategy to develop N-doped g-C_(3)N_(4)-based anode materials for realizing long-lasting energy storage devices.

关键词： graphitic carbon nitride lithium-ion batteries organic electrode perylene polyimide semiconductor-metal heterojunction

Conceptual Design for a Kerosene Fuel-rich Gas-generator of a Turbopump-fed Liquid Rocket Engine

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Journal of Thermal Science 2012年第5期21卷 428-434页

作者： Min son Jaye Koo Won Kook Cho Eun Seok lee Graduate Student Korea Aerospace UniversityGoyang Republic of Korea School of Aerospace and Mechanical Engineering Korea Aerospace UniversityGoyang Republic of Korea Korea Aerospace Research Institute Daejeon Republic of Korea

A design method for a kerosene fuel-rich gas-generator of a liquid rocket engine using turbopumps to supply propellant was performed at a conceptual level. The gas-generator creates hot gases, enabling the turbine to operate the turbopumps. A chemical non-equilibrium analysis and a droplet vaporization model were used for the estimation of the burnt gas properties and characteristic chamber length. A premixed counter-flow flame analysis was performed for the prediction of the burnt gas properties, namely the temperature, the specific heat ratio and heat capacity, and the chemical reaction time. To predict the vaporization time, the Spalding model, using a single droplet in convective condition, was used. The minimum residence time in the chamber and the characteristic length were calculated by adding the reaction time and the vaporization time. Using the characteristic length, the design methods for the fuel-rich gas-generator were established. Finally, a parametric study was achieved for the effects of the O/F ratio, mass flow rate, chamber pressure, initial droplet temperature, initial droplet diameter and initial droplet velocity.

关键词： Liquid rocket engine Conceptual design Fuel-rich gas-generator Sensitivity analysis

Effects of two different doses of intravitreal bevacizumab on subfoveal choroidal thickness and retinal vessel diameter in branch retinal vein occlusion

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International Journal of Ophthalmology(English edition) 2016年第7期9卷 999-1005页

作者： Jongyeop Park Seungwoo lee Yengwoo son Department of Ophthalmology Dongguk University Gyeongju Hospital Gyeongju-si Gyeongsangbuk-do 780-350 Korea

AIM： To investigate the effects of two different doses of intravitreal bevacizumab on subfoveal choroidal thickness （SFChT） and retinal vessel diameter in patients with branch retinal vein occlusion. METHODS： An interventional, restrospective study of 41 eyes of 41 patients who had completed 12mo of follow-up, divided into group 1 （1.25 mg of bevacizumab, 21 eyes of 21 patients） and group 2 （2.5 mg of bevacizumab, 20 eyes of 21 patients）. Complete ophthalmic examination, fluorescein angiography, enhanced depth imaging optical coherence tomography and measurement of retinal vessel diameter with IVAN software were performed at baseline and follow-up. RESULTS： The SFChT changed from 279.1 （165-431） μm at baseline to 277.0 （149-413） μm at 12mo in group 1 （P= 0.086）, and from 301.4 （212-483） μm to 300.3 （199-514） μm in group 2 （P=0.076）. The central retinal arteriolar equivalent （CRAE） changed from 128.8 ±11.2 μm at baseline to 134.5±8.4 μm at 12mo in group 1, and from 134.6±9.0 μm to 131.4±12.7 μm in group 2 （P =0.767）. The central retinal venular equivalent （CRVE） changed from 204.1±24.4 μm at baseline to 196.3±28.2 μm at 12mo in group 1, and from 205.8±16.3 μm to 194.8±18.2 μm in group 2 （P=0.019）. The mean central macular thickness （P〈0.05） and average best-corrected visual acuity （BCVA; P〈0.05） improved in both groups CONCLUSION： Changes in the SFChT are not statistically significant and not different according to the doses of bevacizumab. The CRAE did not show significant change, however, the CRVE showed significant decrease regardless of the dose.

关键词： bevacizumab retinal vein occlusion choroids tomography optical coherence intravitreal injections retinal vessels

Defocused imaging-based quantification of plasmon-induced distortion of single emitter emission

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Light(Science & Applications) 2023年第10期12卷 2236-2247页

作者： Gwiyeong Moon Taehwang son Hajun Yoo Changhun lee Hyunwoong lee Seongmin Im Donghyun Kim School of Electrical and Electronic Engineering Yonsei UniversitySeoul 03722Korea LG Innotek Seoul 07796South Korea Center for Systems Biology Massachusetts General HospitalBostonMAUSA LG Display PajuGyeonggi-do 10845South Korea

Optical properties of single emitters can be significantly improved through the interaction with plasmonic structures,leading to enhanced sensing and imaging *** turn,single emitters can act as sensitive probes of the local electromagnetic field surrounding plasmonic structures,furnishing fundamental insights into their physics and guiding the design of novel plasmonic ***,the interaction of emitters in the proximity to a plasmonic nanostructure causes distortion,which hinders precise estimation of position and polarization state and is one of the reasons why detection and quantification of molecular processes yet remain fundamentally challenging in this era of ***,we investigate axially defocused images of a single fluorescent emitter near metallic nanostructure,which encode emitter positions and can be acquired in the far-field with high sensitivity,while analyzing the images with pattern matching algorithm to explore emitter-localized surface plasmon interaction and retrieve information regarding emitter *** distortion in defocused images of fluorescent beads and quantum dots near nanostructure was observed and analyzed by pattern matching and finite-difference time-domain methods,which revealed that the distortion arises from the emitter interaction with *** matching algorithm was also adopted to estimate the lateral positions of a dipole that models an emitter utilizing the distorted defocused images and achieved improvement by more than 3 times over conventional diffraction-limited localization *** improvement by defocused imaging is expected to provide a way of enhancing reliability when using plasmonic nanostructure and diversifying strategies for various imaging and sensing modalities.

关键词： distortion matching interaction