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Laccase를 이용한 Chlorophene 산화전이에 관한 연구
김종오,김영진,Kim, Jong-Oh,Kim, Young-Jin 한국환경보건학회 2007 한국환경보건학회지 Vol.33 No.1
Laccase catalyzes the oxidation and polymerization of aromatic compounds in the presence of molecular oxygen. The oxidative transformation of chlorophene with laccase was conducted in a closed, temperature controlled system. The optimal pH for transformation of chlorophene was proven to be about 5-6. As the temperature rose up to $55^{\circ}C$, the transformation of chlorophene increased. The chlorophene transformation was not enhanced in the presence of soluble polymers. The toxicity of the reaction mixture was increased two times than that of initial reaction mixture after the enzymatic treatment. ABTS has enhanced chlorophene transformation at 0.1 mM and showed negative linear relationship with residual chlorophene by the reaction.
김종오,박수호,이우범,Kim, Jongo,Park, Soo-Ho,Lee, Woo-Bum 한국지하수토양환경학회 2017 지하수토양환경 Vol.22 No.2
Regression analyses were conducted for prediction of benzo(a)pyrene (BaP) and total polycyclic aromatic hydrocarbons (PAHs) in soils. Dimensionless units were applied after each PAH was divided by naphthalene (Nap) for the regression analyses using a previously published Swiss data set or all data sets, including Chinese and Brazilian. A strong correlation was found between BaP/Nap ($R^2=0.95$) or ${\Sigma}PAH/Nap$ ($R^2=0.99$) and Pyr/Nap ratios from the Swiss data set. When the developed prediction equation was applied to other measurements to validate its accuracy, there was great agreement between the data and predicted values. This model could be used as a useful tool for the calculation of average BaP and ΣPAH in specific regions without additional tests.
김종오,윤여헌,김동욱,고영도,유재두,조중호,Kim, Jong-Oh,Yun, Yeo-Hun,Kim, Dong-Wook,Koh, Young-Do,Yoo, Jae-Doo,Cho, Choong-Ho 대한족부족관절학회 2001 대한족부족관절학회지 Vol.5 No.1
Study design: Clinical results were retrospectively analyzed in 11 patients with fractures of talar neck who were treated in our department from Jan. 1994 to Dec. 1999. Objective: The purpose of this study is to evaluate the short-term results and to assess the prognostic factors of talar neck fractures. Material and Method: 11 cases with fractures of talar neck were reviewed retrospectively with minimum 1 year follow-up. There were 8 men & 3 women, and the average age was 25. The most common cause was traffic accident. According to the modified Hawkins classification, type I was in 4 cases, type II in 5, type III in 2, and type IV was none. All type I fractures were treated conservatively, and others were treated operatively. Results: According to Hawkins criteria, there was excellent result in 7 cases(64%), good in 2(18%), and fair in 2(18%). Post-traumatic arthritis occurred in 2 cases, but there was no avascular necrosis. Conclusion: Careful selection of method of treatment and urgent management are important prognostic factors in talar neck fractures. The longer follow-up in more cases is necessary to evaluate the long-term clinical results and complications more accurately.
김종오,이창호,Kim, Jong-Oh,Lee, Chang-Ho 유기성자원학회 2001 유기물자원화 Vol.9 No.2
본 연구는 지렁이 사육농가의 실태 조사를 통하여 향후 지렁이 산업발전의 기초자료로 활용하고자 지렁이 사육시설, 먹이사항 및 지렁이와 분변토 관리에 관한 사항 등을 조시하였다. 국내지렁이 사육시설은 규모적 측면에서 대형화가 이루어지고 있으며, 지렁이의 먹이도 각종 유기성 슬러지로 확대되고 있는 것으로 조사되어, 향후 지렁이 사육농가의 지속적인 교육과 홍보가 필요한 것으로 나타났다. 또한 지렁이 퇴비화 산업의 발전을 위하여 처리공정의 기계화 및 자동화가 이루어져야 하며, 주요 생산품인 지렁이와 분변토의 고부가 상품개발과 아울러 지렁이 퇴비화 산업의 국가적인 정책지원이 필요한 것으로 조사되었다. ln this study, the questionnaire survey was performed to obtain the basic data on current situations and challengeable aspects of vermicomposting industries. The questionnaire contained the four main categories such as vermicomposting facilities, feeling marerials, earthworm breeding and cast handling. The results was summarized as followings: 1. Vermicomposting facilities area was becoming larger, and earthworm feed was also expending to various organic sludges. These trends showed that Vermicomposting is being enlightened to treat and recycle the organic wastes in Korea. 2. Present Vermicomposting technology needs the broad land. Because of the high cost of land in Korea, the land saving technology such as multistage must be needed. And present operation practices are mostly based on human power, mechanization and automation is needed. Also, present control practices are based on individual experience need the scientific base control system. 3. Considering situations of organic wastes management in Korea, the technical development and the practical improvement of Vermicomposting as the waste recycling will be needed.