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고용구,김성홍,오창경,오명철,김수현 濟州大學校 産業技術硏究所 1995 산업기술연구소논문집 Vol.6 No.-
Twelve residual pesticides which applied on the fruits and vegetables cultivation were tested for mutagenic activity using Salmonella typhimurium TA strain. Mutagenic activities against Tedion, Monopho, Danoton, Ometon and Captan of twelve pesticides tested were strong, Thalonil, Prosing, EPN, Phentoate, Dicopol and Captan were medium, and Dicopol were no. Tedion, hlonopho and Danoton showed strong mutagenic activities on TA98, Thalonil, Prosing, EPN, Phentoate, Parathion and Sappiran showed medium, and Danoton showed weak, while Dicopol and Sappiran showed no. At the other hand, Tedion, Danoton, Ometon and Captan showed storng mutagenic acitivities on TA100, Thalonil and Monopho showed medium and Prosing, Phentoate, Parathion and Sappiran showed weak, while EPN and Dicopol showed no. Therefore, EPN identified mutagen which induced only frameshift mutation, Sappiran was only base-substitution, and nine except these and Dicopol of twelve pesticides tested were mutagens which induced both frameshift and base-substitution mutation.
제주도 지하수의 전기비전도도와 염소이온의 지역별 변화 양상
문영석,고기원,최영찬,고용구 濟州大學校海洋硏究所 1995 해양과환경연구소 연구논문집 Vol.19 No.-
The specific electrical conductivity and the chloride contents were monitored at 98 sits in Cheju Island during two years (1994.2∼1995.11) to the purpose of characterized to regional variations of its elements. The areas of east and west were characterized by both higher elements contain than south and north area. Chloride and specific electrical conductivity values from Kimyoung to Shinhung areas showed more than 100㎎/ℓand 400 μmohs/㎝, respectively. Also west areas relatively high values of both elements were derived from agricultural practice and feeding cattle. However, the difference of difference of these areas indicated that the groundwater environments were different.
高容九,崔永贊,吳德鐵 濟州大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.5 No.1
서귀포 시내를 흐르며 천지연 폭포수와 정방폭포수를 이루는 연희천과 동홍천을 대상으로 하여 1990년 10월부터 1991년 9월까지 매월 理化學的, 細菌學的 조사를 실시하였다. 理化學的 성분중 DO, BOD, SS 및 SiO₂-Si의 농도범위는 연희천에서 각각 6.61∼12.82㎎/ℓ, 0.1∼4.5㎎/ℓ, 0.10∼17.10㎎/ℓ, 5.11∼16.22㎎/ℓ였으며, 동홍천에서는 5.30∼11.92㎎/ℓ, 0.4∼17.2㎎/ℓ, 0.51∼48.67㎎/ℓ, 5.16∼14.80㎎/ℓ를 나타내고 있었다. 大腸菌群, 糞便性大腸菌群, 糞便性腸球菌, 葡萄狀球菌등 오염지표 세균의 조사결과는 연희천이 동홍천보다 세균학적으로 양호한 상태에 있음을 보여주고 있다. 연희천과 동홍천의 大腸菌群數는 각각 750-24×10⁴/100㎖와 1100 24×10⁴였으며 糞便性大腸菌群數는 23-24×10³개/100㎎ 와 9~24×10 5개/100ml였다. 糞便性腸球菌은 각각 2∼1324개/100㎖와 3∼13233개/100㎖였으며, 葡萄狀球菌은 6∼223개/100㎖와 2∼1042개/100㎖였다. 한편 연희천은 중하류로 갈수록 수질이 나빠지고 있어 周邊域에서의 下水, 汚水가 流入되고 있음을 알 수 있으며, 동홍천은 상류역의 汚濁된 수질이 중, 하류의 수질에 惡影響을 미치고 있었다. The physical, chemical and bacteriological investigations on the three sites of each two streams, Yeonhee-chun and Donghong-chun which are the sources of two water-falls, Chonjiyon-fall and Chongbang-Fall respectively in Seogwipo City, Korea, were carried out monthly from October 1990 to Septermber 1991. The ranges of DO, BOD, SS and SiO₂-Si concentration of Yeonhee-chun were 6.61∼12.82㎎/ℓ, 0.1∼4.5㎎/ℓ, 0.10∼17.10㎎/ℓ and 5.11∼16.22㎎/ℓ respectively, and those of Donghong-chun were 5.30∼11.92㎎/ℓ, 0.4∼17.2㎎/ℓ, 0.51∼48.67㎎/ℓ and 5.16∼14.80㎎/ℓ respectively. The result of bacterial investigations for the pollution indicator bacteria such as total coliforms, fecal coliforms, fecal streptococci and others showed that the bacterial quality of Yeonhee-chun was somewhat better than that of Donghong-chun. The MPNs of total coliforms of Yeonhee-chun and Donghong-chun were 750-24×10⁴/100㎖ and 1100-24×10 5/100mlrespectively, and those of facal coliforms were 23-24×10³/100㎎ and 9-24×10 5/100ml respectively. The numbers of fecal streptococci of Yeonhee-chun and Donghong-chun were 2-1,324/10㎖ and 3-13,233/10㎖ respectively.
$\delta$$^{15}$ N을 이용한 제주도 지하수 중의 질산염 오염원 조사
송영철,고용구,유장걸 한국지하수토양환경학회 1999 지하수환경 Vol.6 No.3
제주도 지하수중 질산염농도가 높은 지점을 선정하여 1995년부터 1996년까지 4차에 걸쳐 질소안정등위원소의 자연존재를 측정하고. 오염원별 기여율을 계산한 결과는 다음과 같다. 화학비료에 의한 영향이 뚜렸하게 나타나는 지점은 T-3, L-1. O-1∼O-4. F-2∼F-5. G-2의 11개소로써 화학비료 질소성분이 지하수 질산염농도 중 약 60% 이상을 차지하는 것으로 조사되었다. 그리고. 동물성 유기물질에 의한 영향이 많은 지하수는 T-4, T-5. G-2지점 3개소이며, T-4, T-5지점은 생활하수에 의한 영향으로, G-2지점은 쓰레기매립장 침출수의 영향으로 사료된다. 또한. 화학비료와 동물성 유기물질에 의한 영향을 비슷하게 받는 지하수는 T-1, T-2. L-2. F-1지점 4개소로 조사되었다. 18 boreholes with nitrate contaminated were selected. Samples were collected 4 times between both 1995 and 1996. Stable nitrogen isotope ratio for them all was measured and the contribution to contamination from several sources like fertilizer, sewage, cropland. and landfill was analysed. Nitrogen source for 11 sampling sites of T-3, L-1. O-1∼O-4, F-2∼F-5, and G-2 considered to come from chemical fertilizer and its contribution was around 60% or more. T-4. T-5 were located downward the downtown, which were influenced bydomestic sewage and its contribution were 70.7% and 54.7%. Nitrate concentration of G-2 was 17.7 mg/L, among which 60.7% was estimated to come from landfill leachate. T-1 and T-2 were located in the small village, in which 42.2 and 43.4% of nitrogen was to come from domestic sewage but 52.8% and 56.0% were from fertilizer sprayed in the cropland. L-2 was near livestock by which it was estimated to be influenced, in which 59.9% of nitrogen was from cropland. F-1 was in the cropland, by which 50.0% was influenced and 49.5% was estimated from organic matter of animals.