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이상배,김민경,강신애,박가희,김정혜,백수정,남지선,안철우,박종숙 대한내분비학회 2019 Endocrinology and metabolism Vol.34 No.2
Background: Recently, the triglyceride glucose (TyG) index has been considered a surrogate marker of insulin resistance which is awell-known pathogenic factor in nonalcoholic fatty liver disease (NAFLD). However, few studies have investigated the relationshipbetween the TyG index and NAFLD. Thus, we investigated the relationship between the TyG index and NAFLD and the effectiveness of the TyG index compared with the homeostasis model assessment of insulin resistance (HOMA-IR) in identifying NAFLD inKorean adults. Methods: Participants of 4,986 who underwent ultrasonography in a health promotion center were enrolled. The TyG index was calculated as ln [fasting triglycerides (mg/dL)×fasting glucose (mg/dL)/2], and HOMA-IR was estimated. NAFLD was diagnosed byultrasonography. Results: Significant differences were observed in metabolic parameters among the quartiles of the TyG index. The prevalence ofNAFLD significantly increased with increment in the TyG index. After adjusting for multiple risk factors, a logistic regression analysis was performed. When the highest and lowest quartiles of the TyG index and HOMA-IR were compared, the odds ratios for theprevalence of NAFLD were 2.94 and 1.93 (95% confidence interval, 2.32 to 3.72 and 1.43 to 2.61; both P for trend <0.01), respectively. According to the receiver operating characteristic analysis, the TyG index was superior to HOMA-IR in predicting NAFLD. Conclusion: The TyG index and prevalence of NAFLD were significantly related and the TyG index was superior to HOMA-IR inpredicting NAFLD in Korean adults.
파워심을 이용한 HNS 국가방제기본계획의 방제능력 산정방향에 관한 기초 연구
이상배,노창균 한국항해항만학회 2006 한국항해항만학회 학술대회논문집 Vol.1 No.-
This paper desires to assist ensuring of propriety clean-up equipment for clean-up shore or sea of pollution. there is not that responsible ability of a nation has an amount of skimmer or the length of boom. responsible ability of a nation must express overall evaluation what is considering quickly, system, and economizing in addition to an amount or clean-up equipment. responsible ability of a nation is complication and it’s mutual relation of each other factor therefore responsible capacity of a nation is expressed using powersim with system dynamics theory 본 논문에서는 해양오염 사고 시 방제장비를 얼마나 충분히 확보하여 방제작업 수행을 하여야 하는가가 매우 중요하기에 동적 시뮬레이션을 통한 위험분석을 하여 적정 방제장비의 확보를 위한 합리적 구성과 체계화 방안을 수립하는데 도움이 되고자 한다. 한 국가의 방제능력은 단순히 보유하고 있는 유회수기의 대수나 오일펜스의 길이로만 나타내어지는 것은 아니다. 국가의 방제능력은 방제장비의 양 뿐만 아니라 오염 사고시 대응의 신속성과 체계성, 효율성을 고려하여 총괄적으로 표현되는 것이다. 이러한 국가방제능력 산정은 매우 복잡하며, 서로간의 상호관계가 매우 중요시 되므로 시스템 다이나믹스 이론을 활용한 파워심을 이용하여 표현하였다.
이상배,조재철,김선호,김상국,최상삼,김병윤,김영덕 한국광학회 1990 한국광학회지 Vol.1 No.2
MCVD법과 액체 첨가법으로 실리카 광섬유 코아에 Nd를 첨가하여 능동 광섬유 소자를 제조하였다. 514.5nm Ar 레이저를 여기광원으로 하고, dichroic 레이저 거울로 Fabry-Perot 공진기를 구성하여 발진시킨 결과, 중심파장 $1.096\mu\textrm{m}$에서 발진서폭 15nm로 발진하는 광섬유 레이저를 구현할 수 있었다. 여기광원의 세기에 따라 발진특성을 조사하였고, 레이저 출력거울의 반사율을 다양하게 조절하여 실험한 결과 출력거울 반사율이 67.5%일 때 slope 효율 1.28%, 최대 발진출력 1.88mW를 얻었다. The fiber laser was fabricated using Nd doped single mode fiber. The fiber was made by MCVD and solution doping method, and the Fabry-Perot resonator was composed with two dichroic mirrors. It was operated at 1.096 um with 15 nm bandwidth. When the reflectivity of the output copuling mirror was 67.5%. the maxiurn output power 1.88 mw and its slope efficiency 1.28%. was obtained.