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The First Imported Case Infected with Chikungunya Virus in Korea
황정환,이창섭 대한감염학회 2015 Infection and Chemotherapy Vol.47 No.1
Chikungunya is caused by an arbovirus transmitted by Aedes mosquito vector. With the increase of habitat of mosquito by globalwarming and frequent international travel and interchange, chikungunya reemerged and showed global distribution recently. Until now there has not been reported any case infected with chikungunya virus in Korea. A 23-year-old man has been the Republicof the Philippines for 1 week, and visited our emergency center due to fever and back pain. Chikungunya viral infectionwas diagnosed by specific IgM for chickungunya virus by enzyme-linked immunosorbent assayin Korea Centers for DiseaseControl and Prevention. His clinical course was self limited. We introduce the first imported case infected with chikungunyavirus in Korea.
도계지역 오십천에서의 지하수 영향분석 - 수리지화학적 특성과 기원
황정환,송민호,조해리,우남칠,Hwang, Jeong Hwan,Song, Min Ho,Cho, Hea Ly,Woo, Nam C 대한자원환경지질학회 2016 자원환경지질 Vol.49 No.3
이 연구에서는 강원도 도계지역의 오십천과 주변의 지류를 대상으로 하천수의 수리지화학적 특성을 규명하여 지표 수질에 대한 지하수의 영향을 정량적으로 밝히고, 이를 근거로 체계적인 수자원 관리를 위한 기본정보를 제공하고자 하였다. 오십천 하천수의 수질모니터링 결과, 산화환원전위, 용존 이온성분의 분포와 성분간의 상관성, 산소-수소 동위원소비, 오염물질의 분포와 발생 등은 오십천의 가장 중요한 공급원이 지하수임을 지시한다. 하천수의 수질유형은 기반암의 지질학적 특성에 따른 지하수의 물-암석 반응에 의해 결정되며, 조선누층군의 탄산염 기반암에 기원하는 $Ca-HCO_3$ 유형, 평안누층군 내 탄층에 수반되는 황화광물의 용해와 연관된 (Ca, Mg)-$SO_4$ 유형, 그리고 이 두 유형이 복합적으로 나타나는 (Ca, Mg)-($HCO_3$, $SO_4$) 유형 등의 3가지 유형이 나타난다. 수질 오염현상은 광산배수와 유사한 높은 $SO_4$ 함량과, 지표 토지이용에 따른 질산염의 국지적 발생이 확인된다. 여름철 집중강수는 하천수질의 전반적인 유형에는 영향을 미치지 않으나, 지표기원의 오염물질인 질산염과 염소 등의 유입이 증가되는 현상을 초래한다. 그럼에도 불구하고, 증가된 하천유출량으로 인해 용존이온의 농도 희석효과가 발생한다. 본 연구결과는 지표수 수질관리의 시발점이 주 공급원이 되는 지하수질의 특성화로부터 시작되어야 함을 지시한다. Water quality of Oseepchun, Dogye area, was investigated quantitatively for its origin and hydrogeochemistry in relation to the influence of groundwater. Groundwater appears to be the principal source of Oseepchun from the water-quality monitoring data including redox potentials, composition of dissolved ions and their correlations, hydrogen and oxygen stable isotopic ratios, and the distribution and occurrence of contaminants. Water-quality type of the surface water was grouped by the water-rock interactions as $Ca-HCO_3$ type originated from carbonated bed-rocks in the Joseon Supergroup, (Ca, Mg)-$SO_4$ type related with dissolution of surfide minerals in coal beds of Pyeongan Supergroup, and (Ca, Mg)-($HCO_3$, $SO_4$) type of the mixed one. Locally water pollution occurs by high $SO_4$ from mine drainage and $NO_3$ from waste-treatment facility. Intensive precipitation in summer has no effect on the water type of Oseepchun, but increases the inflow of nitrate and chloride originated from land surface. Results of this study direct that groundwater-surface water interaction is intimate, and thus surface-water resource management should begin with groundwater characterization.
경주 월성원전의 주변 환경인식과 향후과제 : 방폐장 유치와 관련하여 In Relation to Attraction of a New Radioactive Waste Dump
황정환 慶州大學校 2005 論文集 Vol.18 No.1
The paper has tried to investigate and study a variety of understanding(human and social and environmental) of a nuclear power plant by looking into the government's energy policy and then studying cases of anti-nuclear-movement and past radioactive-waste dump selection. Also, it has focused on diagnosing the present condition and problems of the Wolsong nuclear power plant, and finding a realistic alternative related to attraction of another radioactive- waste dump in the Gyeongju area. The nuclear power plant has been operated for 23 years since its first operation in 1983, but there continues a tense atmosphere between Gyeonju-area anti-nuclear social groups and the local government because of their intense opposition to attraction of a radioactive waste dump. As the result of the both sides' extremely different positions, such a conflict is spreading even between citizens. Therefore, the local government's efforts for their agreement require transparency, objectivity, fairness, and the like. The local government should accept the opposers' position in a humble attitude, and make the citizens know and persuade in a sincere mind. Because obviously even the opposers of radioactive-waste dump attraction are citizens loving Gyeongju, it's necessarily avoided criticizing them severely and hurting their pride. Furthermore, the government should keep consistent in pursuing its energy policy, and make every effort to develop much more polished policies to obtain their confidence and consensus.
黃正煥 경주대학교 1995 論文集 Vol.7 No.-
An approach methods of ecopolis at presentation in this study is more effective approach methods than existing traditional approach methods in terms of methods of urban development approach. Because these new approach methods is applicable to a sustainable and ecological principle form the angles of creation and management of urban space, and pleasantness and liveliness of urban make a offer vital force in city, Kyongju in a case study is an ancient city of one thousand years history. Kyong ju as for beautiful, clean-sut and delightful city harmonized with all sorts of cultural assets and natural landscape is extraordinarily suitable city for setting an example region of ecopolis . Therefore, there will be acted to the best native latent force to city when an angel of view to see city with lay stress on ecological thoughts and ecological methods is acted as the positive element to raise quality of environment.