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황인조,한근혁,최형욱,김동술,김신도 경희대학교 환경연구소 2001 環境硏究 論文集 Vol.10 No.-
The various existing situations like overpopulation, urbanization, industrialization, and heavy traffic volume in the Seoul metropolitan area have led to the air pollution problem, traffic problem, and increase in opportunities of residing underground place. So, recently in Korea, the residents using underground working place have been of great concerns on indoor air pollutants such as HCHO, radon, particulate matter, carbon monoxide. However, the studies on indoor air pollution have been not extensively conducted in Korea. Indoor radon is an odorless, colorless, tasteless, invisible, inert, and naturally occurring radioactive gas. And it has been known as one of the notorious carcinogens. The purpose of this study was to survey the concentration variations of radon in the subway stations located Seoul metropolitan area. Total of 216 subway stations were surveyed by the continuous radon monitors from Mar. 2001 to Jun. 2001. The study showed that average radon levels of concourses in each line were 1.51, 1.45, 1.51, 1.23, 1.28, 1.37, 1.12, 1.28 pCi/L and those of platforms in each line were 2.09, 1.43, 1.37, 1.67, 1.44, 1.54, 1.40, 1.22 pCi/L, respectively. The study results showed that the average radon concentrations were 1.19 pCi/L in outdoor, 1.34 pCi/L in concourse, and 1.52 pCi/L in platform, respectively.
최병도(Byung-do Choi),허민(Min Huh),황구근(Koo-Geun Hwang),우연(Yeon Woo),박진영(Jin-Young Park) 한국고생물학회 2012 고생물학회지 Vol.28 No.1-2
이 연구는 전라남도에 분포하는 주요 지질유산들을 종합적으로 조사하여, 그 가운데 국가 및 세계지질공원 후보지로서 가치가 높은 지역에 관한 기초적인 학술연구이다. 연구 결과, 학술적 가치가 뛰어나고 현장 보존상태가 양호한 전남 일대 공룡화석지를 중심으로 한 ‘전남 공룡해안 지질공원(가칭)’이 국가지질공원 후보지로 선택되었다. 이 지질공원은 10개 지역의 지오사이트들로 이루어져 있으며, 포함된 지역들은 여수 낭도리 공룡화석지 일대, 해남 우항리 공룡화석지 일대, 보성 비봉리 공룡알화석지, 순천만, 신안 홍도, 신안 병풍도 목재화석지, 신안 우이도 사구, 신안 사옥도 백악기 화석지, 목포 갓바위 일대, 진도 관매도 퇴적층군 등이다. 이들 10개 지역에는 총 39개소의 지오사이트가 있다. This study is a basic academic research on major geoheritages of Jeollanam-do, which are highly probable to be designated as national and world geopark. Firstly the authors have evaluated on the scientific value and present condition of many geosites distributed in the province, and then selected 39 geosites which are well preserved and also high in scientific value. Finally we designate the group of these selected geosites as the ‘Jeonnam Dinosaur Coast Geopark (tentative name)", in view of the scientific value of three famous dinosaur fossil sites distributed in this region, and recommend it as a candidate for the national geopark. The ‘Jeonnam Dinosaur Coast Geopark’ consists of Nangdori dinosaur fossil site in Yeosu, Uhangri dinosaur fossil site in Haenam, Bibongri dinosaur egg site in Boseong, Suncheon Bay, Hongdo Island, Byeongpungdo wood fossil site, Uido sand dune, Saokdo Cretaceous fossil site, Gatbawi area in Mokpo, and Gwanmaedo sedimentary strata area in Jindo.
In Silico Study of the Ion Channel Formed by Tolaasin I Produced by Pseudomonas tolaasii
( Geun Hyeong Jo ),( Do Seok Hwang ),( Sun Hee Lee ),( Yoon Kyung Woo ),( Ji Ye Hyun ),( Yeon Joong Yong ),( Kyung Rai Kang ),( Dong Woon Kim ),( Yoong Ho Lim ) 한국미생물 · 생명공학회 2011 Journal of microbiology and biotechnology Vol.21 No.10
A toxin produced by Pseudomonas tolaasii, tolaasin, causes brown blotch disease in mushrooms. Tolaasin forms pores on the cellular membrane and destroys cell structure. Inhibiting the ability of tolaasin to form ion channels may be an effective method to protect against attack by tolaasin. However, it is first necessary to elucidate the three-dimensional structure of the ion channels formed by tolaasin. In this study, the structure of the tolaasin ion channel was determined in silico based on data obtained from nuclear magnetic resonance experiments.
Some Rationally Looking Faces of Ωn Having lrrational Minimum Permanents
DO, SEOK-SU,HWANG, SUK-GEUN 경북대학교 위상수학 기하학연구센터 1995 硏究論文集 Vol.2 No.-
Let Ω_(n) denote the convex polytope consisting of all n×n doubly stochastic matrices. We determine the minimum permanents which may or may not be rational and the permanent-minimizing matrices over some rationally looking faces of Ω_(n). We also discuss the barycentricity of the (0,1)-matrices with which we consider the permanent-minimization problem.