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Calculation of optimal current density of double side permanent magnet linear synchronous motor

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Journal of Central South University 2011年第1期18卷 165-170页

作者： JANG ki-Bong AN Ho-Jin kim Gyu-Tak School of Mechatronics Changwon National University

The use of design method considering a coil temperature to maximize the thrust density of a double side coreless permanent magnet linear synchronous motor(PMLSM) was *** optimal current density where the coil temperature reaches an allowable temperature with heat analysis was applied to a magnetic circuit *** optimal current density is verified whenever the design parameters of the motor are *** design parameters of the motor were applied to thrust *** this way,the optimal model,which is a reversal of the existing design method,is *** results were compared with the experimental data to verify their *** the convection heat transfer coefficient is applied to other models,the results of the analysis and test values show good *** method proposed has some limitations.

关键词：永磁直线同步电动机电流密度永磁直线同步电机密度计算双面设计方法对流换热系数磁路设计

Hepatocellular carcinoma,decompensation,and mortality based on hepatitis C treatment:A prospective cohort study

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World Journal of Gastroenterology 2022年第30期28卷 4182-4200页

作者： Gwang Hyeon Choi Eun Sun Jang Young Seok kim Youn Jae Lee In Hee kim Sung Bum Cho Han Chu Lee Jeong Won Jang Moran ki Hwa Young Choi Dahye Baik Sook-Hyang Jeong Department of Internal Medicine Seoul National University Bundang HospitalSeoul National University College of MedicineSeongnam 13620South Korea Department of Internal Medicine Soonchunhyang University Bucheon HospitalBucheon 14584South Korea Department of Internal Medicine Inje University Busan Paik HospitalBusan 47392South Korea Department of Internal Medicine Chonbuk National University HospitalJeonju 54907JeonbukSouth Korea Department of Internal Medicine Chonnam National University Hwasun HospitalHwasun 58128South Korea Department of Gastroenterology Asan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea Department of Internal Medicine The Catholic University of KoreaSeoul 06591South Korea Cancer Control and Population Health Graduate School of Cancer Science and PolicyNational Cancer CenterGoyang 10408South Korea

BACKGROUND Prospective studies of the long-term outcomes of patients with hepatitis C virus(HCV)infection after treatment with interferon-based therapy(IBT)or directacting antivirals(DAA)are limited in many Asian *** To elucidate the incidences of hepatocellular carcinoma(HCC)and death/transplantation based on treatment with IBT or DAA,to compare the outcomes of the sustained virologic response(SVR)to IBT and DAA,and to investigate outcome-determining factors after *** This cohort included 2054 viremic patients(mean age,57 years;46.5%male;27.4%with cirrhosis)prospectively enrolled at seven hospitals between 2007 and *** were classified as the untreated group(n=619),IBT group(n=578),and DAA group(n=857).Outcomes included the incidences of HCC and death/*** incidences of the outcomes for each group according to treatment were calculated using an exact method based on the Poisson distribution.A multivariate Cox regression analysis was performed to determine the factors associated with HCC or death/transplantation,followed by propensity score matching to confirm the *** During a median of 4.1 years of follow-up,HCC and death/transplantation occurred in 113 and 206 patients,respectively,in the entire *** with the untreated group,the incidences of HCC and death/transplantation were significantly lower in the IBT group[adjusted hazard ratio(aHR)0.47,95%CI:0.28-0.80 and aHR 0.28,95%CI:0.18-0.43,respectively]and the DAA group(aHR 0.58,95%CI:0.35-0.96,and aHR 0.19,95%CI:0.20-0.68,respectively).Among 1268 patients who attained SVR with IBT(n=451)or DAA(n=816),the multivariable-adjusted analysis showed no differences in the risks of HCC(HR 2.03;95%CI:0.76-5.43)and death/transplantation(HR 1.38;95%CI:0.55-3.49)between the two *** was confirmed by a propensity score-matching *** factors for HCC after SVR were age,genotype 1,and the presence of *** Treatment and achieving SVR

关键词： Hepatitis C virus Direct-acting antiviral Sustained virologic response Hepatocellular carcinoma Mortality

Electrochemical characteristics of stainless steel using impressed current cathodic protection in seawater

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中国有色金属学会会刊：英文版 2009年第4期19卷 930-934页

作者： Seok-ki JANG Min-Su HAN Seong-Jong kim Division of Marine Engineering Mokpo Maritime University

Stainless steels such as STS 304,316 and 630 are frequently used as shaft materials in small fiber reinforced polymer(FRP) fishing *** the shaft material is exposed to a severely corrosive environment such as seawater,it should be protected using appropriate *** impressed current cathodic protection was used to inhibit corrosion in shaft *** anodic polarization,passivity was remarkably more evident in STS 316 stainless steel than in STS 304 and STS *** pitting potentials of STS 304,316,and 630 stainless steels were 0.30,0.323,and 0.260 V,*** concentration polarization due to oxygen reduction and activation polarization due to hydrogen generation were evident in the cathodic polarization trends of all three stainless *** 316 had the lowest current densities in all potential ranges,and STS 630 had the *** analysis showed that STS 316 was the most noble in the *** addition,the corrosion current density was the lowest for STS 316.

关键词：外加电流阴极保护 316不锈钢电化学特性海水腐蚀电流密度材料腐蚀阳极极化 STS

Mechanical and electrochemical characteristics evaluation in annealing treatment for ship material

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中国有色金属学会会刊：英文版 2009年第B9期19卷 40-44页

作者： Seok-ki JANG Young-Jae JEONG Seong-Jong kim Division of Marine Engineering Mokpo Maritime University Jeonnam Techno Park

The effect of heat treatment on the electrochemical and mechanical properties of SS400 steel was investigated, and the effects of annealing conditions on notched specimens subjected to the slow strain rate test (SSRT) were studied. The results show that no correlations are observed among the maximum tensile strength, yield strength, and stress corrosion cracking. In contrast, the elongation and time-to-fracture are improved with stress-relieving annealing compared with the as-received condition. The elongation, time-to-fracture, and number of dimples increase with annealing heat treatment.

关键词：退火处理电化学船舶材料特性评价机械 SS400钢应力腐蚀开裂消除应力退火

Surface characteristics of chemical conversion coating for Mg-Al alloy

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中国有色金属学会会刊：英文版 2009年第4期19卷 892-897页

作者： Masazumi OkiDO Ryoichi ICHINO Seong-Jong kim Seok-ki JANG Nagoya University Division of Marine Engineering Mokpo Maritime University

The chemical conversion coating was formed on Mg alloy for low cost and harmlessness in environment by using the colloidal silica as the main *** film formed at 298 K was thick,which was thought to be the combination of Si and *** salt spray test,the ratio of black rust on the specimen that did not conducted chemical conversion treatment was five times or more than those of the chemical conversion treated *** film of chemical conversion coating produced by alkali treatment process was thinner than the specimen produced in basic chemical conversion treatment solution.

关键词：化学转化膜镁铝合金表面特性环境无害化盐雾试验涂膜厚度低成本硅溶胶

New para-magnetic(CoFeNi)(50)(CrMo)(50-x)(CB)x(x=20,25,30)non-equiatomic high entropy metallic glasses with wide supercooled liquid region and excellent mechanical properties

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Journal of Materials Science & Technology 2020年第8期36卷 135-143页

作者： Jeong Tae kim Sung Hwan Hong Jin Man Park Jürgen Eckert ki Buem kim Erich Schmid Institute of Materials Science Austrian Academy of Sciences(ÖAW)Jahnstrae 128700LeobenAustria Hybrid Materials Center(HMC) Department of Nanotechnology and Advanced Materials EngineeringSejong University209Neungdong-roGwangjin-guSeoul143-747Republic of Korea Global Technology Center(GTC) Samsung Electronics Co.Ltd129 Samsung-roYeongtong-guSuwonsiGyeonggi-do443-742Republic of Korea Department of Materials Science Chair of Materials PhysicsMontanuniversität LeobenJahnstraße 128700LeobenAustria

In this study,high entropy metallic glasses(HEMGs)were developed through a combination of concepts for designing metallic glasses(main element+transition metal+metalloid element)and high-entropy alloys(more than five elements,each element having an atomic concentration between 5 at.%and 35 at.%).The developed metallic glass alloys are composed of Co-Fe-Ni main elements,transition metals(Cr,Mo)and metalloid elements(C,B).Moreover,the present work reports the thermal,mechanical and magnetic properties of(CoFeNi)(50)(CrMo)(50-x)(CB)x alloys with x=20,25,*** developed as-spun HEMGs exhibit typical paramagnetic properties even for a high amount of ferromagnetic elements(Co,Fe,and Ni)and have high elastic modulus(103–160 GPa)and hardness(14–27 GPa),thus possessing mechanical properties similar to well-known Co-based metallic glasses(Co-Cr-Mo-C-B system).In addition,some of the bulk samples prepared with a diameter of 2 mm form bulk metallic glasses with a high compressive strength around 3.5 *** mechanisms determining the stability of the supercooled liquid,as well as the paramagnetic and mechanical properties for the developed non-equiatomic HEMGs,are discussed.

关键词： Metallic glasses Paramagnetism High entropy alloys Phase stability

Drug-induced sarcoidosis-like reaction three months after BNT162b2 mRNA COVID-19 vaccination:A case report and review of literature

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World Journal of Clinical Cases 2023年第1期11卷 177-186页

作者： Soo Ryang kim Soo ki kim Takako Fujii Hisato Kobayashi Toyokazu Okuda Takanobu Hayakumo Atsushi Nakai Yumi Fujii Ryuji Suzuki Noriko Sasase Aya Otani Yu-ichiro Koma Motoko Sasaki Tsutomu Kumabe Osamu Nakashima Department of Gastroenterology Kobe Asahi HospitalKobe 6530801HyogoJapan Department of Radiology Kobe Asahi HospitalKobe 6530801HyogoJapan Department of Clinical Laboratory Kobe Asahi HospitalKobe 6530801HyogoJapan Department of Pharmacy Kobe Asahi HospitalKobe 6530801HyogoJapan Division of Pathology Department of PathologyKobe University Graduate School of MedicineKobe 6530801HyogoJapan Department of Human Pathology Kanazawa University Graduate School of MedicineKanazawa 9208640IshikawaJapan Department of Gastroenterology Kumabe ClinicKumamoto 8611331KumamotoJapan Laboratory Services Center St.Mary's HospitalKurume 830-8543FukuokaJapan

BACKGROUND A 70-year-old man with hepatitis C virus-related recurrent hepatocellular carcinoma was admitted for further diagnosis of a 1 cm iso-hyperechoic nodule in segment(S)*** SUMMARY Gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging(EOB-MRI)revealed the nodule in S5 with a defect at the hepatobiliary phase,hyperintensity on diffusion weighted imaging(DWI)and hypointensity on apparent diffusion coefficient(ADC)***-enhanced computed tomography revealed hypervascularity at the early phase,and delayed contrast-enhancement was observed at the late ***-enhanced ultrasound(US)revealed incomplete defect at the late vascular *** liver tumor,lymphoproliferative disease,intrahepatic cholangiocarcinoma(small duct type)and bile duct adenoma were suspected through the imaging *** guided biopsy,however,showed a noncaseating hepatic sarcoid-like epithelioid granuloma(HSEG),and histopathological analysis disclosed spindle shaped epithelioid cells harboring Langhans-type multinucleated giant *** month after admission,EOB-MRI signaled the disappearance of the defect at the hepatobiliary phase,of hyperintensity on DWI,of hypointensity on ADC map,and no stain at the early *** That the patient had received BNT162b2 messenger RNA(mRNA)coronavirus disease 2019 vaccination 3 mo before the occurrence of HSEG,and that its disappearance was confirmed 4 mo after mRNA vaccination suggested that the drug-induced sarcoidosis-like reaction(DISR)might be induced by the mRNA ***,rechallenge of drug-induced DISR with the third mRNA vaccination was not confirmed.

关键词： Drug-induced sarcoidosis-like reaction BNT162b2 mRNA COVID-19 vaccine Noncaseating granuloma Ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging Th1/Th2 profile Case report

Reliability of flip-chip bonded RFID die using anisotropic conductive paste hybrid material

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Transactions of Nonferrous Metals Society of China 2011年第A1期21卷 175-181页

作者： Jun-Sik LEE Jun-ki kim Mok-Soon kim Namhyun KANG Jong-Hyun LEE Advanced Joining Technology Team/Microjoining Center Korea Institute of Industrial Technology(KITECH) Yeonsu-gu Incheon 406-840 Korea School of Materials Science & Engineering Inha University Department of Materials Science & Engineering Pusan National University Department of Materials Science & Engineering Seoul National University of Technology

A reliability of flip-chip bonded die as a function of anisotropic conductive paste (ACP) hybrid materials, bonding conditions, and antenna pattern materials was investigated during the assembly of radio frequency identification(RFID) inlay. The optimization condition for flip-chip bonding was determined from the behavior of bonding strength. Under the optimized condition, the shear strength for the antenna printed with paste-type Ag ink was larger than that for Cu antenna. Furthermore, an identification distance was varied from the antenna materials. Comparing with the Ag antenna pattern, the as-bonded die on Cu antenna showed a larger distance of identification. However, the long-term reliability of inlay using the Cu antenna was decreased significantly as a function of aging time at room temperature because of the bended shape of Cu antenna formed during the flip-chip bonding process.

关键词：可靠性调查混合材料倒装芯片各向异性 RFID 导电膏无线电频率识别天线方向图

Correction to:Memristive Devices Based on Two‑Dimensional Transition Metal Chalcogenides for Neuromorphic Computing

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Nano-Micro Letters 2022年第5期14卷 15-17页

作者： ki Chang Kwon Ji Hyun Baek Kootak Hong Soo Young kim Ho Won Jang Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoul 08826Republic of Korea Interdisciplinary Materials Measurement Institute Korea Research Institute of Standards and Science(KRISS)Daejeon 34133Republic of Korea Department of Materials Science and Engineering Institute of Green Manufacturing TechnologyKorea UniversitySeoul 02841Republic of Korea Advanced Institute of Convergence Technology Seoul National UniversitySuwon 16229Korea

The original version of this article,unfortunately,contained some mistakes and unintentional wrong description of Fig.6 and the caption of Figs.9,*** correct version of Fig.6 is *** mentioned figure name for the Fig.6 on the manuscript should be *** 2D vdW synaptic devices,the length of the tunneling barrier can be increased or decreased on the trapped or detrapped *** et *** memristive and neuromorphic devices composed of vertically grown WS2 layer and ZnO(Fig.6e)[149].The interlayer separation between WS2 and ZnO layers serves as an effective porous medium allowing the ZnO to grow with *** interfacial region of ZnO,the very contiguous to WS2 layer.

关键词： WS2 Transition separation