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광양만 유역의 수질 및 표층퇴적물에서의 PFOS 및 PFCs의 오염에 관한 연구
조현서(Hyeon Seo Cho),강조해(Jo Hae Kang),이대인(Dae In Lee),조천래(Chon Rae Cho),최민호(Min ho Choi) 한국해양환경·에너지학회 2005 한국해양환경공학회 학술대회논문집 Vol.2005 No.11
Per Fluorinated Compounds(PFCs) are fully fluorinated organic molecules produced synthetically in an electrochemical fluorination process PFOS, PFOA, PFHS, PFOSA are including among PFCs these compounds have high molecular weight and created are environmentally stable these compounds used in a variety of applications, such as in lubricants, paints, cosmetics, and fire-fighting foams. Produced and used widely over the last half-century, PFCs are being detected in wildlife and humans around the globe. Kwangyang Bay is a semi-closed coastal sea on the south coast of Korea. The total population within the bay watershed is approximately 240,000 people. Several rivers and ditches, including the Seomjin River, one of Korea's five biggest river systems, enter the bay, and seawater is exchanged with the South Sea at the southern part of the bay. The water depth is less than 5m in the western part of the bay, and is more than 20m near Myodo and in the eastern part of the bay. The area is characterised by a semidiurnal tide. Land-based pollution sources(river water, sediment) were investigated in January 2005 and seawater and sediment samples were collected in November 2004 and January 2005. Ranges of concentrations of PFOS, PFOA, PFHS and PFOSA in stream waters were ND-1411.5ng/L, ND-376.0ng/L, ND-488.0ng/L and ND-3.6ng/L, respectively. Stream sediments were ND-5.43ng/g dry-wt, ND-0.47ng/g dry-wt, ND-0.14ng/g dry-wt and ND-0.47ng/g dry-wt, respectively. Ranges of concentrations of PFOA in sea water at November 2004 were ND-5.0ng/L.. PFOS and PFOA in sea water at January 2005 were ND-14.3ng/L and ND-4.9ng/L, respectively.
이대인(Dae In Lee),조현서(Hyeon Seo Cho),조천래(Chon Rae Cho),이정훈(Jeong Hoon Lee),강조해(Jo Hae Kang),최민호(Min Ho Choi),김도희(Do Hee Kim),윤진숙(Jin Suk Yoon) 한국해양환경·에너지학회 2004 한국해양환경공학회 학술대회논문집 Vol.2004 No.-
Temporal and spatial characteristics of pollutant loads from the various pollution sources in Kwangyang Bay were evaluated. Total discharging loadings of BOD, TN, and TP by unit loading estimation were 11,524㎏/day, 11,536㎏/day, and 827㎏/day, respectively, and were mainly affected by the industrial and population sources. The Yeosu and Kwangyang cities as administrative district had the highest pollutant loads. Flow rate ranges from about 30-4,406,400㎡/day in December to 240-35,337,600㎡/day in August with a flow rate of PS27(the Seomjin River} as the highest one. Total COD, TN, and TP loadings in August were about 89,915㎏/day, 2,077,845㎏/day, and 50,123㎏/day, respectively, which exceeded those of December. Especially, of input sources, the Seomjin river had the most pollutant loads. Wastewater discharging loads from the water treatment facilities was the greatest contributors to pollutant loads in the inner part of Kwangyang Bay. Point sources located in south-western part of the bay showed high concentration in heavey metals distribution. Seasonal variations of pollutant loads were related to the changes of flow rate, those were increased rapidly on August, 2004. For the improvement of water quality in this area, pollutant loads were reduced within the limits of the environmental capacity.
이대인(Dae In LEE),조현서(Hyeon Seo CHO),조천래(Chon Rae CHO),이정훈(Jeong Hoon LEE),강조해(Jo Hae KANG),최민호(Min Ho CHOI),김도희(Do Hee KIM),윤진숙(Jin Suk YOON) 전남대학교 수산과학연구소 2004 수산과학연구소논문집 Vol.13 No.-
Temporal and spatial characteristics of pollutant loads from the various pollution sources in Kwangyang Bay were evaluated. Total discharging loadings of BOD, TN, and TP by unit loading estimation were 11,524 ㎏/day, 11,536 ㎏/day, and 827 ㎏/day, respectively, and were mainly affected by the industrial and population sources. The Yeosu and Kwangyang cities as administrative district had the highest pollutant loads. Flow rate ranges from about 30-4,406,400 ㎥/day in December to 240-35,337,600 ㎥/day in August with a flow rate of PS27 (the Seomjin River) as the highest one. Total COD, TN, and TP loadings in August were about 89,915 ㎏/day, 2,077,845 ㎏/day, and 50,123 ㎏/day, respectively, which exceeded those of December. Especially, of input sources, the Seomjin river had the most pollutant loads. Wastewater discharging loads from the water treatment facilities was the greatest contributors to pollutant loads in the inner part of Kwangyang Bay. Point sources located in south-western part of the bay showed high concentration in heavy metals distribution. Seasonal variations of pollutant loads were related to the changes of flow rate, those were increased rapidly on August, 2004. For the improvement of water quality in this area, pollutant loads were reduced within the limits of the environmental capacity.
퇴적물 중 다환방향족탄화수소의 실험실간 비교시험에 관한 연구
정인영 ( In-young Chung ),권오성 ( Oh-sung Kwon ),진달래 ( Dalrae Jin ),허인애 ( Inae Huh ),서용찬 ( Yong-chan Seo ),이은희 ( Eun-hee Lee ),조현서 ( Hyeon-seo Cho ),강윤석 ( Youn-seok Kang ),이준희 ( Jun-hee Lee ),박지형 ( Ji-hyun 한국환경분석학회 2019 환경분석과 독성보건 Vol.22 No.4
Thepurposeofthisstudywastoestablishnationalstandardmethodofpolycyclicaromatichydrocarbons(PAHs)insediment.ThesampleswereextractedusingSoxhletextractionoracceleratedsolventextraction(ASE)andinjectedwithbenzo[e]pyrene-d<sub>12</sub>asasurrogateinternalstandard.Napthalene-d<sub>8</sub>,acenaphthene-d<sub>10</sub>,phenanthrene-d<sub>10</sub>,chrysene-d<sub>12</sub>,Benzo(a)pyrene-d<sub>12</sub>,Indeno(1,2,3-c,d)pyrene-d<sub>12</sub>wereusedasinternalcleanupstandards.P-terphenyl-d<sub>14</sub>wasinjectedasarecoveryinternalstandardandanalyzedusinggaschromatograph-massspectrometer(GC-MS).Aninterlaboratorycomparisonstudywasconducted,inwhichthethreeselectedparticipatinglaboratoriesquantitativelyanalyzedseveralPAHsincertifiedsedimentsamples:IAEA-383,IAEA-417,IAEA-408,NIST-1944.Internalqualitycontrolwasconductedindividually.TheresultsreportedforPAHsbythethreelaboratorieswereacceptable,witharangeofrelativestandarddeviations(RSD)of4.0-24.0%inIAEA-383(16.0ng/g-290.0ng/g).ResultsobtainedfortheIAEA-417(150.0ng/g-7,700.0ng/g)andNIST-1944samples(390.0ng/g-9,700.0ng/g)werealsofoundacceptablewitharangeofRSDof5.4-27.9%and2.4-25.3%,respectively.AlthoughtheresultsofIAEA-408(3.3ng/g-84.0ng/g)wereslightlyhigherthanthoseofotherRSDs,theywereacceptablewitharangedof2.5-38.7%attwoofthelaboratories.Thelimitofquantificationofthismethodwasfoundtobe0.003mg/kg,andrecoveryratesrangedfrom50.0%to120.0%.TheRSDwaslessthan25%,andtheaccuracyrangedfrom60.0%to135.0%insediment.
이무훈,조현규,조현성,조성훈,장창복,최의인,Lee Moo-Hun,Cho Hynu-Kyu,Cho Hyeon-Sung,Cho Sung-Hoon,Jang Chang-Bok,Choi Eui-In 한국정보처리학회 2005 정보처리학회논문지D Vol.12 No.6
웹의 확산과 더불어 웹상에 존재하는 정보의 양은 예측할 수 없을 정도로 증가하였고, 웹 사용자의 이용수준과 요구 사항도 매우 다양하고 복잡해졌다. 사용자가 원하는 정보와 의미적으로 정확히 일치하는 정보들을 검색하기 위해서는 웹 정보에 대한 정확한 의미 부여와 웹 정보 사이의 의미적 연관성을 기술할 수 있는 지식 표현 수단으로써 온톨로지가 필요하다. 이러한 필요성에 따라 W3C에서는 웹 자원에 대한 의미 표현 기술로 OWL(Web Ontology Language)이라는 웹 온톨로지 언어를 발표하였으나 아직 이를 효과적으로 생성, 편집할 수 있는 전용 에디터(editor)의 개발은 아직 미비한 실정이다. 따라서 본 논문에서는 웹 문서들 간의 의미적 연관성을 기술할 수 있는 OWL을 직관적인 인터페이스(interface)로 생성 및 편집할 수 있도록 OWL Parser, Internal DataModel, Visualization Module을 제공하는 온톨로지 에디터를 설계하고 구현하였다. As the internet continues to grow, the quantity of information on the Web increases beyond measure. The internet users' abilities and requirements to use information also become varied and complicated. Ontology can describe correct meaning of web resource and relationships between web resources. And it can extract conformable information that a user wants. Accordingly, we need the ontology to represent knowledge. W3C announced OWL(Web Ontology Language), a meaning description technology for such web resources. But, the development of a professional use of tools that can compose and edit effectively is not yet developed adequately. In this paper, we design and implement an Ontology editor which generates and edits OWL documents through intuitional interface, with a OWL parser, a Internal DataModel, and a Serializer.