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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

strip Casting of High Performance structural Alloys

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Strip Casting of High Performance Structural Alloys

Experimental status of the HANBIT Facility

The 8th China-Korea Workshop on Advanced Materials

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 Materials Pohang University of Science and TechnologyPohang 790-784Korea Center for Advanced Aerospace Materials Pohang University of Science and TechnologyPohang 790-784Korea

＜正＞ 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

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Plasma science and Technology 2004年第4期6卷 2367-2370页

作者： s.j.Yoo M.Kwon j.g.Bak K.Choh I.s.Choi j.H.Choi j.W.Choi A.C.England j.Hong H.s.jeon H.g.jhang j.s.ju M.jung j.Y.kim s.s.kim W.H.Ko K.Y.Kwak M.C.Kyum B.j.lee D.K.lee j.H.lee H.g.lee s.g.lee T.Lho H.K.Na B.H.park M.K.park D.C.seo s.H.seo j.H.Yeom j.s.Yoon K.I.You Korea Basic science Institute Daejeon305-333Korea Hanbit User group

HANBIT is a magnetic mirror confinement device. Recent physics experimentshave been mainly focused on identifying discharge characteristics and on getting stable plasmaproduction and operation modes, by using a 500 kW slot antenna system at a fixed RF frequency of 3.5MHz and varying discharge conditions such as fueling rate, RF power, and B-field intensity incentral cell. Two distinct operation modes are found to be very sensitive to the RF power as well asthe ratio of the RF frequency to the ion cyclotron frequency. A MHD interchange mode of m = - 1 isclearly observed and the stabilizing mechanism can be explained by the sideband coupling theory.

关键词： mirror discharge stabilization

Power management unit chip design for automobile active-matrix organic light-emitting diode display module

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journal of Central south University 2009年第4期16卷 621-628页

作者： kim j H park j H kim j H CAO T V lee T Y BAN H j YANg K kim H g HA P B kim Y H Department of Electronic Engineering Changwon National University 9 Sarim-Dong Changwon 641-773 Korea Denso Ps Electronics Corporation 47 Seongsan-Dong Changwon 641-315 Korea

A power management unit （PMU） chip supplying dual panel supply voltage, which has a low electro-magnetic interference （EMI） characteristic and is favorable for miniaturization, is designed. A two-phase charge pump circuit using external pumping capacitor increases its pumping current and works out the charge-loss problem by using bulk-potential biasing circuit. A low-power start-up circuit is also proposed to reduce the power consumption of the band-gap reference voltage generator. And the ring oscillator used in the ELVss power circuit is designed with logic devices by supplying the logic power supply to reduce the layout area. The PMU chip is designed with MagnaChip＇s 0.25 μ high-voltage process. The driving currents of ELVDD and ELVss are more than 50 mA when a sPICE simulation is done.

关键词： DC-DC converter AMOLED charge pumping power management unit (PMU) dual panel supply voltage

Present status of the KsTAR superconducting Magnet system Development

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Plasma science and Technology 2004年第5期6卷 2445-2450页

作者： Keeman kim H.K.park K.R.park B.s.Lim s.I.lee M.K.kim Y.Chu W.H.Chung s.H.Baek j.Y.Cho H.Yonekawa A.Chertovskikh Y.B.Chang j.s.kim C.s.kim D.j.kim N.H.song K.P.kim Y.j.song I.s.Woo W.s.Han D.K.lee Y.K.Oh K.W.Cho j.s.park g.s.lee H.j.lee T.K.Ko s.j.lee National NationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalKorea Atomic Energy Research InstituteDaejeonRepublic of KoreaYonsei UniversitySeoulRepublic of KoreaYonsei UniversitySeoulRepublic of Korea Fusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science

The mission of Korea superconducting Tokamak Advanced Research (KsTAR)project is to develop an advanced steady-state superconducting tokamak for establishing a scientificand technological basis for an attractive fusion reactor. Because one of the KsTAR mission is toachieve a steady-state operation, the use of superconducting coils is an obvious choice for themagnet system. The KsTAR superconducting magnet system consists of 16 Toroidal Field (TF) coils and14 Poloidal Field (PF) coils. Internally-cooled Cable-In-Conduit Conductors (CICC) are put into usein both the TF and PF coil systems. The TF coil system provides a field of 3.5 T at the plasmacenter and the PF coil system is able to provide a flux swing of 17 V-sec. The major achievement inKsTAR magnet-system development includes the development of CICC, the development of a full-size TFmodel coil, the development of a coil system for background magnetic-field generation , theconstruction of a large-scale superconducting magnet and CICC test facility. TF and PF coils are inthe stage of fabrication to pave the way for the scheduled completion of KsTAR by the end of 2006.

关键词： superconducting magnet KsTAR CICC

Portable system for CWA Detection Using Micro Array gas sensor

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稀有金属材料与工程 2006年第A3期35卷 124-128页

作者： j.H.Kwak Y.T.Lim g.H.kim N.j.Choi H.D.park g.H.Rue j.s.Huh j.C.kim D.D.lee school of Electrical Engineering and Computer science Kyungpook National UniversityDaegu 1370Korea Electronics and Telecommunications Research Institute Future Technology Research Division New Functional Information Devices TeamGajeongYuseong-GuDaejeon 161 Korea Korea Electronics Technology Institute Yatap-DongBundang-GuSeongnam-SiGyeonggi-Do #68Korea Department of Materials science and Metallurgy Kyungpook National UniversityDaegu 1370Korea Department of Chemical Engineering Kyungpook National UniversityDaegu 1370Korea

Biochemistry weapon is raising new tools of war and *** research is an experiment about portable system for CWAs (chemical warfare agents) detection using micro array gas *** were divided into four types such as blood, nerve,vesicant,and choking *** detect various CWAs,semiconductor thick film sensor array based on tin oxide was fabricated and their gas responses were *** temperature was range of 250℃to 350℃and gas concentration was range of 0.1μg/g to 10μg/*** array was measured as operating temperatures,concentrations for four simulant agents of *** parameters from results were carried out classification among CWAs through the principal component analysis (PCA).Also,classification of gases is studied using adaptive resonance theory (ART) that is one of neural network *** displayed using PDA system.

关键词： snO2 chemical warfare agents(CWAs) portable system ART array PCA

Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAs detector

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Chinese Physics C 2024年第2期48卷 1-25页

作者： g. Aad B. Abbott K. Abeling N.j. Abicht s.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.s. Acharya C. Adam Bourdarios L. Adamczyk s.V. Addepalli M.j. Addison j. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik M.N. Agaras j. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.s. Ahmed s. Ahuja X. Ai g. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh I. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury g.L. Alberghi j. Albert P. Albicocco g.L. Albouy s. Alderweireldt M. Aleksa I.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.j. Ali s. Ali s.W. Alibocus M. Aliev g. Alimonti W. Alkakhi C. Allaire B.M.M. Allbrooke j.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M.g. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C.g. Ames D. Amidei s.P. Amor Dos santos K.R. Amos V. Ananiev C. Anastopoulos T. Andeen j.K. Anders s.Y. Andrean A. Andreazza s. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki j.A. Aparisi Pozo M.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal s.j. Arbiol Val C. Arcangeletti A.T.H. Arce E. Arena j-F. Arguin s. Argyropoulos j.-H. Arling O. Arnaez H. Arnold g. Artoni H. Asada K. Asai s. Asai N.A. Asbah j. Assahsah K. Assamagan R. Astalos s. Atashi R.j. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten s. Auricchio A.D. Auriol V.A. Austrup g. Avolio K. Axiotis g. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.j. Bailey V.R. Bailey j.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.K. Balunas j. Balz E. Banas M. Bandieramonte A. Bandyopadhyay s. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel K.N. Barends T. Barillari M-s. Barisits T. Barklow P. Baron D.A. Baron Mo The ATLAs Collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAs Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAs *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 geV and 2 TeV and for multiple tagger working points.

关键词： ATLAs jET QUARK gLUON TAggINg

Flatness improvement of anode supported electrolytes for planar sOFCs via tape casting and co-firing

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Flatness improvement of anode supported electrolytes for pla...

Design and fabrication of novel double core spot size converter integrated optical devices

第九届全国氢能学术会议

作者： H.g.park s.C.park j.j.lee s.H.Hyun D.H.kim Yonsei Univ.

＜正＞In recent,sOFCs have attracted much attention because of their low emissions,high energy conversion efficiency,and flexibility for various ***,one of the key problems of applying fiat type sOFCs in large scale power generation is that the large area unit cells with the high degree of flatness can not be satisfactorily *** this work,

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Design and fabrication of novel double core spot size conver...