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Effects of Weaving Laser on Weld Microstructure and Crack for Al 6k21-T4 Alloy

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journal of Materials Science & Technology 2011年第1期27卷 93-96页

作者： B.h.kim N.h.Kang W.T.Oh C.h.kim j.h.kim Y.S.kim Y.h.Park Department of Materials Science and Engineering Pusan National UniversitySan30Jangjeon-dongGeumjeong-guBusan 609-735Korea Department of Materials and Components Engineering Dong-Eui UniversityBusan 614-714Korea Advanced joining Technology Team KITECH7-47Songdo-dongYeonsu-guIncheon 406-840Korea Division for Dongnam Area Technology Service KITECHJisa-dongGanseo-guBusan 618-230Korea

For Al 6k21-T4 overlap weld joint,the shear-tensile strength by using the weaving laser was improved as compared to the case of linear *** the specimen of low strength,the porosity was distributed continuously along the intersection between the plates and fusion ***,for the optimized welding condition,large oval-shaped porosities were located only in the advancing track of the concave ***,the continuity of cracks and porosities played a key role to determine the ***,the weaving width was also the important parameter to control the ***,the concave part had more significant hot and cold cracking in the weld and heat-affected zone（hAZ）,respectively,than the convex part.

关键词： Weaving laser Weld microstructure Void Al alloy

Vertically aligned NiS nano-flakes derived from hydrothermally prepared Ni(Oh)2 for high performance supercapacitor

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journal of Energy Chemistry 2018年第3期27卷 791-800页

作者： A.M.Patil A.C.Lokhande P.A.Shinde j.h.kim C.D.Lokhande Thin Film Physics Laboratory Department of PhysicsSbivaji UniversityKolbapar 416004 MHIndia Department of Materials Science and Engineering Chonnam National University 300 Yongbong-DongPuk-GuGwangju.South Korea Centre for Interdisciplinaly Research D.Y.Patil UniversityKolhapurIndia

In present work,the vertically aligned Ni S nano-flakes composed thin film is prepared by anionic exchange process in which hydrothermally prepared Ni（Oh）2is used as a parent thin film and Na2S as a sulfide ion *** synthesis process produced fully transformed and shape-controlled nano-flakes of Ni S from nano-flowers of Ni（Oh）*** electrochemical supercapacitor properties of Ni S electrode are studied with cyclic voltammetry（CV）,galvonostatic charge discharge（GCD）and electrochemical impedance spectroscopy（EIS）*** porous surface area（85 m^2/g）of Ni S nano-flakes makes large material contribution in electrochemical reaction stretching specific capacitance（Cs）of 880 F/g at scan rate of 5 m V/s and 90%electrochemical stability up to 4000 CV cycles in 2 M KOh ***,the flexible solid-state symmetric supercapacitor device（Ni S/PVA–Li ClO4/Ni S）has been fabricated using Ni S electrodes with polyvinyl alcohol（PVA）–lithium perchlorate（Li ClO4）gel *** Ni S/PVA–Li ClO4/Ni S device exhibits specific capacitance of 56 F/g with specific energy of 14.98 Wh/kg and excellent cycling stability after 2000 *** addition,the Ni S/PVA–Li ClO4/Ni S device demonstrates illumination of red light emitting diode（LED）for 60 s,which confirms the practical applicability of Ni S/PVA–Li ClO4/Ni S device in energy storage.

关键词： Anionic exchange process Nickel sulfide Nano-flakes Supercapacitor Thin film

Physical properties of sprayed antimony doped tin oxide thin films:The role of thickness

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journal of Semiconductors 2011年第5期32卷 10-17页

作者： A.R.Babar S.S.Shinde A.V.Moholkar C.h.Bhosale j.h.kim K.Y.Rajpure Electrochemical Materials Laboratory Department of PhysicsShivaji UniversityKolhapur-416 004India Department of Materials Science and Engineering Chonnam National University300 Yongbong-DongBuk-GuGwangju500-757South Korea

Transparent conducting antimony doped tin oxide （Sb：SnO2） thin films have been deposited onto pre- heated glass substrates using a spray pyrolysis technique by varying the quantity of spraying solution. The structural, morphological, X-ray photoelectron spectroscopy, optical, photoluminescence and electrical properties of these films have been studied. It is found that the films are polycrystalline in nature with a tetragonal crystal structure having orientation along the （211） and （112） planes. Polyhedrons like grains appear in the FE-SEM images. The average grain size increases with increasing spraying quantity. The compositional analysis and electronic behaviour of Sb：SnO2 thin films were studied using X-ray photoelectron spectroscopy. The binding energy of Sn3ds/2 for all samples shows the Sn^4＋ bonding state from SnO2. An intensive violet luminescence peak near 395 nm is observed at room temperature due to oxygen vacancies or donor levels formed by Sb^5＋ ions. The film deposited with 20 cc solution shows 70 % transmittance at 550 nm leading to the highest figure of merit （2.11 × 10^-3 Ω^-1）. The resistivity and carrier concentration vary over 1.22 × 10^-3 to 0.89 × 10^-3Ω cm and 5.19 ×10^20 to 8.52 × 10^20 cm^-3, respectively.

关键词： semiconductors microstructure optical properties electrical properties

胰腺神经内分泌肿瘤门静脉期CT肿瘤/胰腺实质增强比的预后价值

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国际医学放射学杂志 2023年第3期 369-370页

作者： h.j.Park h.j.kim j.h.kim S.Y.kim S.h.Choi j.h.Byun 程欣

摘要目的评估胰腺神经内分泌肿瘤（PanNEN）病人门静脉期CT肿瘤-胰腺实质增强比（CER on PVP）在预后方面的价值，并将其与当前常见的分级和分期系统进行比较。方

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比较CT和MRI在鉴别非弥漫型自身免疫性胰腺炎与胰腺导管腺癌的诊断效能

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国际医学放射学杂志 2019年第1期 127-128页

作者： S.Lee j.h.kim S.Y.kim j.h.Byun h.j.kim M.h.kim 汪俊萍 Department of Radiology and Research Institute of Radiology University of Ulsan College of MedicineAsan Medical Center

摘要目的采用阅片者自身对照的方式比较CT和MRI在鉴别非弥漫型自身免疫性胰腺炎(AIP)与胰腺导管腺癌(PDA)的诊断效能。方法本研究共纳入61例非弥漫型AIP

关键词：自身免疫性胰腺炎胰腺导管腺癌诊断效能 MRI 弥漫型 CT

基于胰腺神经内分泌肿瘤病人术前MRI特征预测术后复发的研究

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国际医学放射学杂志 2022年第3期 370-371页

作者： S.han j.h.kim j.Yoo S.jang 于子川

摘要目的探讨胰腺神经内分泌肿瘤(PNET)的MRI特征对预测术后复发及其时机的价值。方法回顾性研究2000—2018年间99例接受MRI检查并进行手术的PNET

关键词：

热消融治疗肝内胆管癌:一项系统性回顾和Meta分析

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国际医学放射学杂志 2022年第2期 246-247页

作者： G.h.kim P.h.kim j.h.kim P.N.kim h.j.Won Y.M.Shin 汤双燕

摘要目的总结热消融治疗肝内胆管癌（ICC）的疗效和安全性。方法检索MEDLINE、EMBASE、Cochran Library和Web of Science数据库，查找关于通过热消融治疗ICC病人疗

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采用胰腺CT成像评估可切除的胰管导管腺癌病人外科手术后的复发情况：风险评分系统的制定和验证

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国际医学放射学杂志 2020年第6期 732-733页

作者：王佳妮 D.W.kim S.S.Lee S.O.kim j.h.kim h.j.kim j.h.Byun Department of Radiology and Research Institute of Radiology University of Ulsan College of Medicine Asan Medical Center

摘要目前没有术前评估模型可用于预测可切除的胰管导管腺癌(PDAC)病人外科手术后的预后情况。目的使用临床和CT变量形成和验证术前风险评分系统,以预测可切除

关键词：

光声成像对索拉非尼治疗肝癌效果的无创性检测

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国际医学放射学杂志 2018年第2期 240-241页

作者： S.Lee j.h.kim j.h.Lee j.h.Lee j.K.han 宋筱蕾 Department of Radiology Seoul National University Hospital

摘要目的运用光声成像（PI）评估索拉非尼治疗鼠肝细胞癌（hCC）过程中组织氧饱和度（s O;）的变化。方法将hep G2-RFP hCC荷瘤鼠随机分为索拉非尼治疗组（n=21）和

关键词：索拉非尼光声成像无创性