全部文献期刊会议图书|学者科研项目
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作者:Sungkyu Lee , Yangjin Park
来源:[J].Psychiatric Quarterly, 2017, Vol.88 (3), pp.653-663
摘要:Using a nationally representative sample of 2514 U.S. Latinos, this study examined the extent to which major depressive disorder (MDD) onset differs by place of origin and the factors associated with it. The Kaplan-Meier method estimated the survival and hazard functions for MDD ...
作者:Jung Ah Lee , Sungkyu Lee , Hong-Jun Cho
来源:[J].International Journal of Environmental Research and Public Health(IF 1.998), 2017, Vol.14 (3)
摘要:Introduction: The prevalence of adolescent electronic cigarette (e-cigarette) use has increased in most countries. This study aims to determine the relation between the frequency of e-cigarette use and the frequency and intensity of cigarette smoking. Additionally, the study...
作者:Sungkyu Lee , Jessica L. Barrington-Trimis ...
来源:[J].Drug and Alcohol Dependence(IF 3.141), 2016, Vol.168, pp.99-103
摘要:Abstract(#br)Objective(#br)To examine risk factors associated with use of e-cigarettes only, conventional cigarettes only, and dual use in Korean adolescents and young adults.(#br)Methods(#br)In a cross-sectional study, anonymous questionnaires were completed between April–M...
作者:Hyun Seon Hong , Sungkyu Lee , Caroline Sunyong Lee
来源:[J].Ceramics International(IF 1.789), 2015, Vol.41 (4), pp.6122-6126
摘要:Abstract(#br)Bimetallic composite materials, also known as (Ni–Cu)/YSZ cermets, were successfully fabricated using high-energy ball-milling for possible use as cathode materials in high-temperature electrolysis cells. The fabricated (Ni–Cu)/YSZ cermet was characterized using...
作者:Sungkyu Lee
来源:[J].Vacuum(IF 1.53), 2002, Vol.65 (2), pp.161-168
摘要:Abstract(#br)Significant increase in yield of wafer fabrication process for +1° X-cut miniature surface mount device (SMD) 32.768 kHz quartz tuning forks was realized by employing positive (subtractive) photolithography, selective etching and subsequent positive (subtractive...
作者:Sungkyu Lee , Yangho Moon ...
来源:[J].Vacuum(IF 1.53), 2004, Vol.78 (1), pp.91-105
摘要:Abstract(#br)Resonance frequency of a quartz tuning fork crystal for use in chips of code division multiple access, personal communication system, and a global system for mobile communication was comprehensively analyzed by an analytical method, Sezawa's approximations and t...
作者:Sungkyu Lee , Rachel A. Grana , Stanton A. Glantz
来源:[J].Journal of Adolescent Health(IF 2.966), 2014, Vol.54 (6), pp.684-690
摘要:Abstract(#br)Purpose(#br)As elsewhere, in South Korea electronic cigarettes (e-cigarettes) are marketed, in part, as a smoking cessation aid. We assessed the prevalence of e-cigarette use among Korean adolescents and the relationship between e-cigarette use and current (past...
作者:Sungkyu Lee , Jong-Min Kim ...
来源:[J].Journal of Alloys and Compounds(IF 2.39), 2008, Vol.467 (1), pp.614-621
摘要:Abstract(#br)Cu/YSZ cermet (40 and 60 vol.% Cu powder with balance YSZ) is a more economical cathode material than the conventional Ni/YSZ cermet for high temperature electrolysis (HTE) of water vapor and it was successfully fabricated by high-energy ball-milling of Cu and Y...
作者:Sungkyu Lee , Yangho Moon ...
来源:[J].Vacuum(IF 1.53), 2003, Vol.75 (1), pp.57-69
摘要:Abstract(#br)Resonance frequency of quartz tuning fork crystal for use in chips of code division multiple access, personal communication system, and a global system for mobile communication was analyzed by an analytical method, Sezawa’s theory and the finite element method (...

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