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Deposition and Characterization of (Ba, Sr)RuO3 Oxide Electrode Using TMHD-Based Single Cocktail Source

Journal of Rare Earths 2004年第Z2期22卷 8-12页

作者： hyun chul kim kyung il hong young bae kim duck kyun choi Department of Ceramic Engineering Hanyang University17 Haengdang-dongSeongdong-kuSeoul 133-791Korea Department of Ceramic EngineeringHanyang University17 Haengdang-dongSeongdong-kuSeoul 133-791Korea Department of Ceramic EngineeringHanyang University17 Haengdang-dongSeongdong-kuSeoul 133-791Korea Department of Ceramic EngineeringHanyang University17 Haengdang-dongSeongdong-kuSeoul 133-791Korea

(Ba, Sr)RuO3 has been paid an attention as a promising electrode for (Ba, Sr)TiO3 dielectric material due to its similarity in structure and chemical composition with BST. In this study, (Ba, Sr)RuO3 conductive oxide film was deposited on a 4 inch p-type Si wafer by metal organic chemical vapor deposition (MOCVD) using single cocktail source for the practical device application. Ba(TMHD)2, Sr(TMHD)2, Ru(TMHD)3 precursors and solvent [1-EtylePiPerdine (C7H15 N) ] as starting materials were mixed together for single cocktail source. A liquid delivery system (LDS) and a vaporization cell were utilized for the delivery and vaporization of single cocktail source, respectively. The source feeding rate was controlled by a liquid mass flow controller (LMFC). Deposition parameters, such as the oxygen flow and the source flow rate,were sensitive to phase formation, resistivity and the composition ratio of (Ba, Sr)RuO3 films. Highly (110)-textured (Ba,Sr)RuO3 film was obtained vhen the Ar/O2 ratio was 200/140 sccm at a source flow rate of 0.05 sccm. The process window of stoichiometric composition of BSR film was observed with varying the source flow rate from 0.05 sccm to 0.1 sccm.

关键词： (Ba, Sr)RuO3 (Ba, Sr)TiO3 MOCVD liquid delivery system(LDS) nozzle type injector

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Comparative effectiveness of combined antiplatelet treatments in acute minor ischaemic stroke

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Stroke & Vascular Neurology 2022年第1期7卷 13-21页

作者： Shina kim Joon-Tae kim Ji Sung Lee Beom Joon kim Jong-Moo Park Kyusik Kang Soo Joo Lee Jae Guk kim Jae-Kwan Cha Dae-hyun kim Tai Hwan Park Sang-Soon Park kyung Bok Lee Jun Lee Keun-Sik hong Yong-Jin Cho hong-kyun Park Byung-chul Lee kyung-Ho Yu Mi Sun Oh Dong-Eog kim Wi-Sun Ryu Jay Chol choi Jee-hyun Kwon Wook-Joo kim Dong-Ick Shin Sung-il Sohn Jeong-Ho hong Man-Seok Park Kang-Ho choi Ki-hyun Cho Juneyoung Lee Hee-Joon bae Department of Neurology Chonnam National University HospitalChonnam National University Medical SchoolGwangjuKorea Clinical Research Center Asan Institute for Life SciencesAsan Medical CenterUniversity of Ulsan College of MedicineSeoulKorea Department of Neurology Cerebrovascular CenterSeoul National University Bundang HospitalSeongnamKorea Department of Neurology Uijeongbu Eulji Medical CenterEulji University School of MedicineUijeongbu-siKorea Department of Neurology Nowon Eulji Medical CenterEulji UniversitySeoulKorea Department of Neurology Eulji University HospitalEulji UniversityDaejeonKorea Department of Neurology Dong-a UniversityBusanKorea Department of Neurology Seoul Medical CenterSeoulKorea Department of Neurology Soonchunhyang University HospitalSeoulKorea Department of Neurology Yeungnam University HospitalDaeguKorea Department of Neurology Inje University Ilsan Paik HospitalInje University College of MedicineGoyangKorea Department of Neurology Hallym University Sacred Heart HospitalAnyangKorea Department of Neurology Dongguk University Ilsan HospitalGoyangKorea Department of Neurology Jeju National University HospitalJeju National University School of MedicineJejuKorea Department of Neurology University of Ulsan College of MedicineUlsanKorea Department of Neurology Chungbuk National University HospitalCheongjuKorea Department of Neurology Keimyung University Dongsan Medical CenterDaeguKorea Department of Biostatistics Korea University College of MedicineSeoulKorea

Background No study has thoroughly compared the effectiveness of combined antiplatelet treatments(other than clopidogrel–aspirin)versus clopidogrel–aspirin or aspirin alone for early secondary prevention in acute ischaemic *** We identified patients with acute,minor,non-cardiogenic ischaemic stroke treated with aspirin alone,clopidogrel–aspirin or other combination *** scores considering the inverse probability of treatment weighting were used to adjust for baseline *** primary outcome was the composite of all strokes(ischaemic or haemorrhagic),myocardial infarction and all-cause mortality at 3 *** Among 12234 patients(male:61.9%;age:65.5±13 years)who met the eligibility criteria,aspirin,clopidogrel–aspirin and other combination treatments were administered in 52.2%,42.9%and 4.9%of patients,*** the crude analysis,the primary outcome event at 3 months occurred in 14.5%of the other combination group,14.4%of the aspirin group and 13.0%of the clopidogrel–aspirin *** the weighted Cox proportional hazards analysis,the 3-month primary outcome event occurred less frequently in the clopidogrel–aspirin group than in the other combination group(weighted HR:0.82(0.59–1.13)),while no association was found between the aspirin group(weighted HR:1.04(0.76–1.44))or other combination group and the 3-month primary *** Other combined antiplatelet treatment,compared with aspirin alone or clopidogrel–aspirin,was not associated with reduced risks of primary composite vascular events or recurrent stroke during the first 3 months after ***,the results suggest that other combination treatments,particularly the cilostazol-based combination,may not be effective alternatives for clopidogrel–aspirin to prevent early vascular events in patients with acute minor *** exploration in clinical trials will be needed.

关键词： prevention treatment alone

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