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Recent TCP(Tidal Current Power) projects in Korea

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Science China(Technological Sciences) 2010年第1期53卷 57-61页

作者： Chul Hee JO Kang Hee lee Yu Ho RHO School of Engineering Inha University253Yonghyun-DongNam-GuIncheon 402-751Republic of Korea Graduate School Department.of Naval Architecture & Ocean EngineeringInha University253Yonghyun-DongNam-GuIncheon 402-751Republic of Korea

Having strong current on the west coast with up to 10 m tidal range in Korea,there are many suitable and applicable locations for TCP(Tidal Current Power) application in *** only the west coast,but also the south west regions having narrow channels between islands creating fast ocean stream are suitable for *** first TCP application in Korea is 1 MW helical VAT(Vertical Axis Turbine) device installed in Wooldolmog area in *** first HAT(Horizontal Axis Turbine) TCP device of 25 KW was developed and installed in cooling water weir of Samchonpo power plant in ***,a 100 kW prototype HAT TCP device is being planned to be installed in Daebang strait in *** big project would be Inchon TCP farm of 200 MW on the west coast in *** consortium of 5 members was formed in April,*** site will be the largest TCP site in the *** paper describes recent TCP projects in Korea with background and environmental conditions of the projects.

关键词： TCP(Tidal Current Power) ocean energy renewable energy clean energy HAT(Horizontal Axis Turbine) VAT(Vertical Axis Turbine)

Acoustic Emission Monitoring and Microscopic Investigation of Cracks in ERCuNi Cladding

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Journal of Materials Science & Technology 2003年第3期19卷 201-205页

作者： S.P.Lu O.Y.Kwon K.J.lee T.B.Kim Department of Mechanical Engineering Inha University253 Yonghyun-dongInchon 402-751KoreaDepartment of Mechanical EngineeringInha University253 Yonghyun-dongInchon 402-751KoreaDepartment of Mechanical EngineeringInha University253 Yonghyun-dongInchon 402-751KoreaDepartment of Mechanical EngineeringInha University253 Yonghyun-dongInchon 402-751Korea

A corrosion resistant CuNi cladding was deposited on SM45C (equivalent to AISI1045) substrate by DC inverse arc welding. During the welding process, a three channel acoustic emission (AE) monitoring system was applied to detect the crack signals generating from both the cladding process and after cladding. Characteristics of the welding crack signal and noise signal had been analyzed systematically. Based on the record time of the signal, the solidification crack and delayed crack were distinguished. By two-dimensional AE source location, the crack position was located, and then investigated by scanning electron microscopy (SEM). Results showed that the AE system could detect the welding crack with high sensitivity and the two-dimensional source location could accurately determine the crack position. Microstructures of the cladding and heat affected zone (HAZ) were examined. Dendrites in the cladding and coarse grains in the HAZ were found.

关键词： Cladding Acoustic emission monitoring Crack CuNi alloy

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二重管双液旋喷施工技术快速加固软土地基

工业建筑 2010年第3期40卷 135-138页

作者：孙文娟沈水龙罗春泳金龙县上海交通大学土木工程系上海200240 韩国基础技术株式会社(KFT)

二重管高压喷射双液浆体施工技术是一种以普通波兰特水泥作固化剂和水玻璃作速凝剂使软土地基快速固化的技术,其关键设备包括高压水泥浆泵、速凝剂泵、分流器、双液输送钻喷杆、钻机和多功能双液喷头等。施工时多功能喷头的上部单喷嘴... 详细信息

二重管高压喷射双液浆体施工技术是一种以普通波兰特水泥作固化剂和水玻璃作速凝剂使软土地基快速固化的技术,其关键设备包括高压水泥浆泵、速凝剂泵、分流器、双液输送钻喷杆、钻机和多功能双液喷头等。施工时多功能喷头的上部单喷嘴喷射高压水泥浆切割土体,下部复合式喷嘴同轴喷射高压水泥浆外包速凝剂二次切割土体并与之混合,短时间内形成具有一定强度的加固体,达到在数秒内快速加固软土地基的目的。由于速凝剂水玻璃的存在,该法在含水量丰富的地层中具有较好的加固效果。

关键词：二重管高压旋喷速凝剂快速加固

Mechanical alloying of platinum with 5% ZrO_2 nanoparticles for glass making tools

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Transactions of Nonferrous Metals Society of China 2014年第S1期24卷 99-105页

作者： Taek-Kyun JUNG Dong-Woo JOH Seung-Yub lee Myung-Sik CHOI Soong-Keun HYUN Hyo-Soo lee Korea Institute of Industrial Technology 7-47 Songdo-dong Yenosu-gu Incheon 406-840 Korea Department of Applied Physics and Applied Mathematics Columbia University School of Materials Science and Engineering Inha University 253 Yonghyun-Dong Incheon 405-751 Korea

Synthesis and characterization of mechanically alloyed Pt-5%ZrO2(volume fraction) for structural components in the glass industry were described. Zirconia(ZrO2) nanoparticles(<100 nm) were produced by the electrical explosion of zirconium(Zr) wires, and blended with platinum(Pt) powders(<44 ?m) for 2-72 h in ambient atmosphere. The Pt particle size followed the typical decreasing trend of the normal ball milling process up to 48 h, but particle agglomeration was observed at 72 h. The grain size evolution was similar to that of the particle size, dropping down to around 50 nm at 48 h. The root mean square strain of the Pt crystallites showed the opposite behavior, maximizing at 48 h with a subsequent relaxation process. For the 48 h ball milled powders, spark plasma sintering was carried out to form a bulk disk. The measured mass loss of the sintered bulk sample shows a decent thermal stability despite its relatively low density.

关键词： platinum zirconia nanoparticle electrical wire explosion mechanical alloying

An on-line scaling method for improving scalability of a database cluster

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重庆邮电学院学报（自然科学版） 2004年第5期16卷 71-77页

作者： JANG Yong ll lee Chung ho lee Jae dong BAE Hae young Dept. of Computer Science and Engineering Inha UniversitySouth KoreaDept. of Computer Science and Engineering Inha UniversitySouth KoreaDept. of Computer Science Dankook UniversityYonghyun Dong Nam ku Inchon 402 751 KoreaDept. of Computer Science and Engineering Inha UniversitySouth Korea

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on line scaling without interrupting service. To support more client’s queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on line scaling method. Our method improves the existing on line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e., we decrease the number of data copy by reusing the backup data. Also, our on line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.

关键词：数据库串在线缩放方法可量测性改进方法

使用低压平行板等离子体对天然皮革进行表面改性

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北京皮革（中外皮革信息版）（中） 2007年第8期 95-98页

作者： Jai Hyuk Ohoi Eung Suok lee Hong Koo Baik Se-Jong lee Ki Moon Soog Myung Keun Hwang Chang Su Huh 郝霞（译） Yonsei大学冶金工程系 134 Shinchon—dongSeodaemun—Ku首尔120—749韩国 Kyungsung大学材料科学与工程系 Busan 608—756韩国新材料科学与应用物理系 Konkuk大学Chungju 380—701韩国 Inha大学电气工程系 253 Yonghyun—dongInchon市402—751韩国不详

本文将低压平行板等离子体用于控制天然皮革的表面可湿性，提高其可染性，防水性和湿擦性能。经过等离子体处理后，由于等离子体的原子团和离子的轰击，使得天然皮革不均匀的表面趋于光滑。试验表明，亲水性随着表面处理时间的增加而增... 详细信息

本文将低压平行板等离子体用于控制天然皮革的表面可湿性，提高其可染性，防水性和湿擦性能。经过等离子体处理后，由于等离子体的原子团和离子的轰击，使得天然皮革不均匀的表面趋于光滑。试验表明，亲水性随着表面处理时间的增加而增强。CF4等离子体处理可以显著提高天然皮革的防水性能，且不使其脱色。等离子体处理后，湿擦性能可以提高大约2级（使用灰度色标）。由此，我们可以断言，重复进行等离子体处理，将会提高皮革的湿擦效果。

关键词：等离子体天然皮革表面处理