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Assessment of groundwater quality using statistical analysis in Incheon - focused on Gangwha area -
Hee-jong Yoo(유희종),Young-min Cho(조영민),Hye-rin Cho(조혜린),Sung-eun Min(민성은),Ji-hong Seong(성지홍),Hyun-sup Ha(하현섭),Mun-ju Kwon(권문주) 환경독성보건학회 2021 한국독성학회 심포지움 및 학술발표회 Vol.2021 No.5
Naturally occurring radioactive materials (NORM) is widely distributed in groundwater of granite areas. Drinking of groundwater containing NORM such as uranium and radon is highly harmful to human health. The aim of this study is to determine the characteristics of groundwater quality with NORM and geostatistical analysis. Groundwater samples from 37 wells were collected and measured on 24 items of drinking water quality standards including radon and uranium in 2020. The average concentrations of uranium and radon in groundwater were the highest in granite area. Principal component analysis (PCA) showed that PC1 was highly enriched with Na<sup>+</sup>, K<SUP>+</SUP>, Mg<sup>2+</sup>, Ca<sup>2+</sup>, Cl<sup>-</sup>, SO<sub>4</sub><sup>2-</sup>, NO<sub>3</sub><sup>-</sup>, HCO<sub>3</sub><sup>-</sup> and Sr (40.6 %) strongly associated with soluble ion materials. Both PC2 with F<sup>-</sup>, U and Gross alpha (20.3 %) and PC3 with Rn (8.5 %) was related to NORM. PC4 was enriched with Zn (7.0 %). Cluster analysis (CA) revealed three subgroups showing high relationship between Na<sup>+</sup> and Cl<sup>-</sup> of main soluble ion constituents in seawater. This study coupled with statistical analysis is expected to imply appropriate contamination control management for safety of drinking groundwater.
최근 분리동정된 그 람음성 간균에 대한 amikacin을 비롯한 일부 amlno배당체 항생물질의 감수성 비교
이도현 ( Do Hyun Lee ),유희종 ( Hee Jong Yoo ),맹석재 ( Suk Jae Maeng ),황선철 ( Sun Chul Whang ) 대한임상검사과학회 1979 대한임상검사과학회지(KJCLS) Vol.11 No.1
371 Gram-negative bacilli, lactose fermenters and non-lactose fermenters as well, isolated and identified at Korea University Hospital from January 1, 1979 to June 30, 1979 had been compared its susceptibility to amikacin, new aminoglycoside, with other widely used antibiotics; kanamycin, gentamicin and tobramycin. Amikacin proved its efficacy over other antibiotcs tested showing susceptibilities of 94.7%, 94.6%, 91.7% and 45.5% to Proteus rettgeri, Pseudomonas aeruginosa, Proteus morganii and Serratia marcescens, respectively. Amikacin was also revealed as the most effective anti-microbial agent in overall susceptibility testing against the isolates with seusitivity of 87.6% followed by gentamicin, 68.6%, tobramycin, 50.9%, and kanamycin, 47.4%.
이창규 ( Chang Kyou Lee ),박인환 ( In Hwan Park ),김장영 ( Jang Young Kim ),유희종 ( Hee Jong Yoo ) 대한임상검사과학회 1974 대한임상검사과학회지(KJCLS) Vol.6 No.1
A rapid simple method for the direct determination of iron in serum is described wherein Ferrozine was employed as the color reagent. Copper, hemoglobin and moderate lipemia did not appear to interfere with the determination. A good correlatlon was obtaihed for serum iron values when proposed direct technique was compared to a conventional method.
상전위 촉매에 의한 Chalone에 대한 Thioglycolic acid의 Michael 첨가반응
한인섭,허태성,유희종 聖心女子大學校 1983 論文集 Vol.14 No.2
Michael additions of thioglycolic acid to chalcone and its derivatives can be efficiently catalysed, giving high yields, by potassium fluoride and tetra-n-butyl-ammonium bromide in aprotic solvents.