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Propyl gallate에 의한 알레르기성 접촉 구순염
이지호,윤두희,이준영,김형옥 ( Ji Ho Lee,Doo Hee Yoon,Jun Young Lee,Hyung Ok Kim ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.2
Propyl gallste and other gallic acid esters are used as antioxidants in lipsticks, lip balms and salves, cosmetic creams and lotions, bakery products, edible fats and other pharmaceutical and industrial products. Propyl gallate is used widely but allergic contact dermatits from propyl gallate is rare. A 44-year-old female patient had pruritic multiple tiny erythematous papules and vesicles on the margin of her lip for a week. We found that the causative material of the allergic contact cheilitis was propyl gallate. We proved it with a patch test, provocation use test and quantitative and qualitative analysis of the lipstick. To our knowledge, this is the first case report of lipstick allergic contact cheilitis from propyl gallate in Korean literature. (Kor J Dermatol 1997;35(2): 374-378)
이지호,최태련,우윤성,Lee, Ji-Ho,Choi, Tae-Ryon,Wo, Yoon-Sung 한국통계학회 2011 응용통계연구 Vol.24 No.4
In this paper, we consider Bayesian approaches to zero inflated Poisson model, one of the popular models to analyze zero inflated count data. To generate posterior samples, we deal with a Markov Chain Monte Carlo method using a Gibbs sampler and an exact sampling method using an Inverse Bayes Formula(IBF). Posterior sampling algorithms using two methods are compared, and a convergence checking for a Gibbs sampler is discussed, in particular using posterior samples from IBF sampling. Based on these sampling methods, a real data analysis is performed for Trajan data (Marin et al., 1993) and our results are compared with existing Trajan data analysis. We also discuss model selection issues for Trajan data between the Poisson model and zero inflated Poisson model using various criteria. In addition, we complement the previous work by Rodrigues (2003) via further data analysis using a hierarchical Bayesian model. 본 논문에서는 영 과잉 계수형 자료 분석을 위한 모형중의 하나인 영 과잉 포아송 모형의 베이지안 접근 방법에 대해서 연구한다. 구체적으로는 베이지안 영 과잉 포아송 모형의 적합을 위한 사후 표본을 추출하는데 있어서, 깁스 표집기(Gibbs sampler)를 이용하는 마르코프 연쇄 몬테칼로(MCMC) 방법과 역 베이즈공식(IBF)에 의한 표본추출 방법 두 가지를 고려한다. 이러한 두 가지 사후 표본 추출방법을 비교 설명하고, IBF를 통한 사후표본을 깁스 표집기 사후표본의 수렴성 여부를 확인하는 방식에 대해서도 소개한다. 이를 바탕으로 베이지안 영 과잉 포아송 모형을 Trajan이라는 사과 품종의 발아자료(Trajan data, Marin 등, 1993)에 적용하고 모수에 대한 사후추론을 실시하고 기존의 결과와 비교한다. 또한 주어진 자료에 대하여 영 과잉 포아송 모형이 적합한지에 대한 여부를 여러 가지 모형선택 기준을 통해서 살펴보고, 아울러 기존의 자료 분석 결과 (Rodrigues, 2003)를 보완하기 위하여 계층적 베이지안 모형과 같은 대안에 대해서도 논의해본다.
젊은 성인 남자 근로자들에 있어서 음주, 흡연, 비만도와 혈중 지질과의 관련성에 관한 조사 연구
이지호,조병만,이수일,김돈균,Lee, Ji-Ho,Cho, Byung-Mann,Lee, Soo-Ill,Kim, Don-Kyoun 대한예방의학회 1992 예방의학회지 Vol.25 No.4
In order to study the relationship between life-style and serum lipids level in young adults, the author measured the concentration of serum total cholesterol (TC), triglyceride (TG) and high density lipoprotein cholesterol (HDL-C) and investigated age, relative weight, weekly alcohol intake and daily cigarette smoking through questionnaire in 310 male workers aged 20 to 39, in Ulsan area. The results obtained were as follows: 1. In the factors being able to influence serum lipids level there was negative correlation between age and alcohol intake, and the positive correlation between age and relative weight, alcohol intake and relative weight, alcohol intake and smoking with the strongest correlation between alcohol intake and smoking. 2. In univariate analysis, mean total cholesterol concentration were significantly different according to age, smoking and relative weight: mean triglyceride concentration were significantly different according to relative weight only; mean HCL-C concentration were significantly different according to alcohol intake alone. 3. In non-drinkers, HDL-C concentration of smokers were significantly lower than that of non-smokers but triglyceride concentration of smokers were significant higher. And in drinkers, total cholesterol concentration of smokers was significantly higher than that of non-smokers. 4. In multiple regression analysis, significant independent variables were relative weight, age and smoking in the total cholesterol concentration, and relative weight, age and alcohol intake in the triglyceride concentration, and alcohol intake, relative weight and smoking in the HDL-C concentration. By these independent variables, total variation in each dependent variable was explained 7.9%, 17.6% and 7.4% respectively.
고상추출법-UHPLC-MS/MS를 이용한 금강 수계 내 신종 유기오염물질 분석
이지호 ( Ji-ho Lee ),김준우 ( Joonwoo Kim ),나진성 ( Jinsung Ra ),전준호 ( Junho Jeon ) 한국환경분석학회 2015 환경분석과 독성보건 Vol.18 No.3
The occurrence and concentration of emerging organic pollutants, organophosphorus flame retardants (OPFRs), benzotriazole UV stabilizers (BUVSs), pharmaceuticals and personal care products (PPCPs) were investigated using SPE coupled with UHPLC-MS/MS. The method detection limit (MDL) and quantification limit (MQL) for target compounds (10 OPFRs, 8 BUVSs, 9 PPCPs) was lower than 4.6 ng/L and 15 ng/L, respectively, while the recovery rate for river water matrix was ranged from 71 to 100%. Among 27 target pollutants, 18 chemicals were successfully quantified with ng/L levels ranged from 0.3 ng/L ~ 36.9 ng/L. Tributyl phosphate (TnBP; 27.7 ng/L), 2-(2H-benzotrizole-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol (UV-234; 1.6 ng/L), and Methyl paraben (MeP; 36.9 ng/L) are the most abundant compound measured at the highest concentration for each pollutants group, respectively. Carbamazepine (CBZ) and MeP showed the highest detection frequency (97%), followed by 77% frequency of triphenyl phosphate (TPhP) and propyl paraben (PrP). The concentration determined for target organic pollutants are far below a level to trigger an acute toxicity on aquatic organisms. However, the information on the occurrence and concentration gathered from chemical monitoring with a reliable analytical technique should be enlarged to expand our knowledge on integrity and safety of aquatic ecosystem.