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Properties of Dispersion Casting of Y2O3 Particles in Hypo,Hyper and Eutectic Binary Al-Cu Alloys

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journal of Materials Science & Technology 2008年第1期24卷 57-59页

作者： j.j.park G.H.Kim S.M.Hong S.H.Lee M.K.Lee C.K.Rhee Nuclear Nano-Materials Development Lab. Korea Atomic Energy Research Institute （KAERI） 150 Deukjin-dongYuseong-gu Daejeon Korea

In the present work,the dispersion casting of Y-2O-3 particles in aluminum-copper alloy was investigated in terms of microstructural changes with respect to Cu contents of 20 （hypo）,33 （eutectic） and 40 （hyper） wt pct by scanning electron microscopy （SEM） and energy dispersive spectroscopy （EDS）.For the fabrication of Al-Cu alloy dispersed Y-2O-3 ceramic particles,stir casting method was *** case of Al-20 wt pct Cu alloy （hypoeutectic）,SEM images revealed that primary Al was grown up in the *** that,eutectic phase with well dispersed ceramic particles was *** case of eutectic composition,Y-2O-3 particles were uniformly dispersed in the *** the Cu is added into Al up to 40 wt pct （hypereutectic）,primary phase was grown up without any Y-2O-3 ceramic particles in the early stage of ***, eutectic phase was formed with well dispersed ceramic *** can be concluded that Y-2O-3 ceramic particles is mostly dispersed in case of eutectic composition in Al-Cu alloy.

关键词： Dispersion casting Y2O3 particles Stir casting Al-Cu alloy

维普期刊数据库

预测新辅助放化疗后宫颈癌进展:治疗后DWI的价值

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国际医学放射学杂志 2016年第6期 706-706页

作者： j.j.park C.K.Kim B.K.park 徐贝 Department of Radiology and Center for Imaging Science Samsung Medical CenterSungkyunkwan University School of Medicine

摘要目的探究治疗后扩散加权成像(DWI)对宫颈癌新辅助放化疗(CCRT)进展的预测价值。方法该回顾性分析包括连续100例局部进展宫颈癌在完成CCRT后1个月进

关键词： DWI 新辅助放化疗治疗后宫颈癌

前列腺3T扩散加权成像:静脉注射钆布醇的影响

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国际医学放射学杂志 2016年第4期 453-453页

作者： C.K.Kim j.j.park B.K.park 方壮念 Department of Medical Device Management and Research SAIHST Sungkyunkwan University

摘要目的研究注射钆对比剂(GBCA)对3 T扩散加权成像(DWI)评价前列腺癌与良性组织的影响。方法 34例经手术证实的前列腺癌病人在术前行3 T DWI检查,在注射GBCA前后分别扫描DWI。指数表观扩散系数(EADC)和

关键词：加权成像前列腺癌对比剂癌组织 ADC DWI 男生殖器

宫颈癌的宫旁侵犯:3TMR融合T2加权成像和背景体部信号抑制的高b值扩散加权成像

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国际医学放射学杂志 2015年第3期 269-269页

作者： j.j.park C.K.Kim S.Y.park B.K.park 楼敏超 Department of Radiology and Center for Imaging Science Samsung Medical CenterSungkyunkwan University School of Medicine50 Ilwon-dongGangnamguSeoul 135-710Korea

目的回顾性研究3 T MR融合T2加权成像和背景体部信号抑制的高b值扩散加权成像(DWIBS)对评估宫颈癌的宫旁侵犯的价值。方法本研究经机构伦理委员会批

关键词：宫颈癌 DWIBS T2 体部加权成像信号抑制

Prominent cycling reversibility and kinetics enabled by CaTiO3 protective layer on Zn metal for aqueous Zn-ion batteries

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journal of Energy Chemistry 2025年第1期100卷 245-258页

作者： Gaeun Lee Yong Nam Ahn Seongjoon So Chanwoo park jong-Seong Bae Taehyun park Il Tae Kim jaehyun Hur School of Chemical Biological and Battery Engineering Gachon University Seongnam Busan Center Korea Basic Science Institute

Aqueous Zn-ion batteries （AZIBs） have received considerable attention owing to their various advantages such as safety,low cost,simple battery assembly conditions,and high ionic ***,they still suffer from serious problems,including uncontrollable dendrite growth,corrosion,hydrogen evolution reaction （HER） from water decomposition,electrode passivation,and unexpected *** creation of a uniform artificial nanocrystal layer on the Zn anode surface is a promising strategy for resolving these ***,we propose the use of a perovskite CaTiO3（CTO） protective layer on Zn（CTO@Zn） as a promising approach for improving the performance of *** CTO artificial layer provides an efficient pathway for Zn ion diffusion towards the Zn metal because of the high dielectric constant （εr=180） and ferroelectric characteristics that enable the alignment of dipole moments and redistribute the Zn2+ions in the CTO *** avoiding the direct contact of the Zn anode with the electrolyte solution,the uneven dendrite growth,corrosion,parasitic side reactions,and HER are mitigated,while CTO retains its mechanical and chemical robustness during ***,CTO@Zn demonstrates an improved lifespan in a symmetric cell configuration compared with bare ***@Zn shows steady overpotential （～68 m V） for 1500 h at 1 mA cm-2/0.5 mA h cm-2,excelling bare ***,when paired with the V2O5-C cathode,the CTO@Zn//V2O5-C full battery delivers 148.4 mA h g-1（based on the mass of the cathode） after 300 *** study provides new insights into Zn metal anodes and the development of high-performance AZIBs.

关键词： Artificial layer Dielectric constant Zn metal anode Zinc aqueous battery

侧支图：急性前循环缺血性脑卒中后病变进展和缺血半暗带的预测

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国际医学放射学杂志 2024年第3期 371-371页

作者： j.S.Yi H.j.Ki Y.S.jeon j.j.park T.j.Lee j.T.Kwak 黄世豪

摘要目的旨在评估侧支图预测急性前循环缺血性脑卒中后病变进展和缺血半暗带的能力。方法从前瞻性收集的数据库中选定数据进行回顾性分析。基于扩散加权成像

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HYERS—ULAM—RASSIAS STABILITY OF QUADRATIC FUNCTIONAL EQUATIONS IN BANACH MODULES OVER A C^＊—ALGEBRA

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Chinese Annals of Mathematics,Series B 2003年第2期24卷 261-266页

作者： C. park j. park j. SHIN Department of Mathematics Chungnam National University DaeJeon 305-764 South Korea.Department of Mathematics Chungnam National University DaeJeon 305-764 South Korea.Department of Mathematics Chungnam National University DaeJeon 305-764 South Korea.

The authors prove the Hyers-Ulam-Rassias stability of the quadratic mapping in Banachmodules over a unital C*-algebra, and prove the Hyers-Ulam-Rassias stability of the quadraticmapping in Banach modules over a unital... 详细信息

关键词： Stability B-quadratic Functional equation Banach module over Banach algebra

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Strip Casting of High Performance Structural Alloys

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journal of Rare Earths 2004年第Z2期22卷 78-84页

作者： S S park j G Lee Nack j Kim Center for Advanced Aerospace Materials Pohang University of Science and TechnologyPohang 790-784Korea Center for Advanced Aerospace MaterialsPohang University of Science and TechnologyPohang 790-784Korea Center for Advanced Aerospace MaterialsPohang University of Science and TechnologyPohang 790-784Korea

There exists a great need for the development of high performance alloys due to increasing demands for energy conservation and environmental protection. Application of strip casting shows a strong potential for the improvement of properties of existing alloys and also for the development of novel alloy systems with superior properties. The present paper reviews our Center's activities in the development of high performance alloys by strip casting. Examples include (1) Al alloys, (2) wrought Mg alloys, and (3) bulk metallic glass (BMG) alloys.

关键词： strip casting 6061 Al alloy AZ Mg alloy bulk metallic glass (BMG) alloy dispersion hardening

Deposition of Nano-Scaled Coatings Using Inductively Coupled Plasma

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journal of Rare Earths 2004年第Z2期22卷 153-156页

作者： D H jung B park j j Lee School of Materials Science and Engineering College of EngineeringSeoul National UniversitySeoul 151-744Korea School of Materials Science and EngineeringCollege of EngineeringSeoul National UniversitySeoul 151-744Korea School of Materials Science and EngineeringCollege of EngineeringSeoul National UniversitySeoul 151-744Korea

Nano-scaled Ti-B-N coatings could be produced by inductively coupled plasma (ICP) assisted magnetron spurtering. The properties and microstructure of the coating can be changed drastically by applying ICP to conventional magnetron sputtering. In this work, an internal type rf ICP process is used. The core of this technology is the efficient production and control of self-depositing ions and reactive gas ions by an induced electric field. Ti-B-N coatings were prepared by using a TiB2 target and a gas mixture of N2 and Ar at 200 ℃ and a pressure of 60 mTorr. In addition to ICP, the effect of the substrate bias voltage on the structure and properties of the coating was investigated. By applying ICP and a bias voltage to the substrate the hardness of the Ti-B-N coating is increased by more than 75 GPa, as a result of enhanced ionization in the plasma. The Ti-B-N coating, which has the highest hardness, shows the best surface uniformity and a very dense structure with a grain size of 3 nm. This sample also shows a high crystallinity compared to the coating prepared using other deposition parameters.

关键词： nano-scaled coatings industively conpled plasma