VOCs의 光觸媒處理에 관한 硏究

임경택,김춘희,고경숙,배병훈,문종익 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.2

This study has been carried out to observe photodegradation efficieny of TCE with the variation of IN irradiation strength, liquid thickness and immobilized TiO₂. The results are summarized as fallows; 1. Without photocatalyst, the TCE removal efficiency was observed to be about 15% with UV irradiation. 2. Above 93% of TCE were mineralized by immobilized TiO₂on glass panel(5g, 500℃) and UV irradiation. The photodegradation efficiency increased with increasing UV lamp numbers and reaction rate increased with increasing TCE initial concentration. 3. The photodegradation efficiency decreased with increasing the liquid thickness and above 96% of TCE were removed with using 3 UV lamps and liquid thickness less than 6cm.

생물 세척기에 의한 유기성 폐 gas의 처리

林警澤,高京淑 동아대학교 환경문제연구소 1993 硏究報告 Vol.16 No.2

본 연구는 활성 슬러지를 이용한 Toluene 함유 gas의 생물학적 처리에 관한 연구로서 경제적이고도 효율적 처리 기술인 충진상 생물막 반응장치의 효율에 대하여 검토하였다. 산업현장에서 발생되는 유기 gas중 toluene을 제거하는 인자로서 가스 농도, 미생물에 대한 가스부하, 온도 및 기액비 등의 변화에 대하여 가스 제거효율을 측정하였다. 실험 결과는 다음과 같다. 1. 톨루엔의 생물학적 처리가능성을 확인하였다. 2. 초기농도가 증가할수록 적응기간도 길어졌다. 3. MLSS 3400㎎/ℓ 톨루엔농도 150ppm에 있어서 제거효율은 92% 이상이었다. 4. 톨루엔의 생물학적 제거를 위한 최적온도는 35℃임을 확인하였다. 5. 톨루엔의 제거에 대한 기액비의 영향은 거의 없었다. This investigation is carried out to study the biodegradation of toluene in gases using mixed microorganisms. The bioscrubber used to eliminate organic pollutants in waste gases is economical and efficient treament technique. Gas removal efficiency according to the variation of inlet gas concentration, gas load per unit biomass, temperature and gasliguid ratio has been measured. The results show as follows : 1. It is confirmed that toluene gas can be treated biologically by activated sludge. 2. The larger the initial concentration of toluene is, the longer the acclimation period of sludge shows. 3. At the loading level of less than 150ppm toluene per 3400㎎/l MLSS, removal efficiency is excellent, which is greater than 92%. 4. Optimum temperature of toluene removal is 35℃.

病院 地下空間內의 空氣中 微生物分布에 관한 硏究

박천제,배병훈,고경숙,김춘희,임경택 동아대학교 환경문제연구소 1998 硏究報告 Vol.21 No.1

This study was carried out to investigate the distribution and concentration of microorganism by the method of the air contamination using RCS air sampler in underground linac room of two general hospital located in Pusan. The places of air sampling were 4 different spot in two each hopital. Therefore, total 8 places were sampled from June 30, 1996 to May30, 1997. The results obtained were as follows 1. In a agar strip GK-A media for total count of microbial particles, it was estimated to be 76 CFU/ft^(3) in ICR room, and the consulting room was 53 CFU/ft^(3), lobby was XI CFU/ft^(3), linac room was 35 CFU/ft^(3), in the M hospital, respectively. The distribution of organism in the air of M hospital were shown gram positive cocci 72%, gram negative bacilli 15%, gram positive bacilli 6.1%, fungi 6.1%, respectively . On the other hand, in P hospital, it was obtained to be ICR room 74 CFU/ft^(3), lobby- 45 CFU/ft^(3), consulting room 34 CFU/ft^(3), linac room 31 CFU/ft^(3), respectively. The distribution and concentration of microorganism in the air were detected gram positive cocci 75%, fungi 10.3%, gram negative bacilli 8.7%, gram positive bacilli 6.0%. respectively. The results were recognized to be a low frequency in the linac room. 2. In agar strip S media for total counts of M hospital, ICR room was shown the highest organism with 32 CFU/ft^(3), but the lowest organism was detected linac room with 20 CFU/ft^(3). Also, the case of P hospital was estimated high 43 CFU/ft^(3) at ICR room, low organism was shown at linac 17 CFU/ft^(3) Test of coagulase were recognized to be a negative Staphylococci 68.3% in M hospital, 60.7% in P hospital. Coagulase positive cocci was estimated to be 31.7% in M hospital, 39.3% in P hospital. 3. In agar strip C media for coliform bacteria, colony counts at ICR room 10 CFU/ft^(3), consulting room 7 CFU/ft^(3), linac room 6 CFU/ft^(3), lobby 4 CFU/ft^(3) in M hospital, respectively. On the other hand, in P hospital were shown ICR room and main lobby 7 CFU/ft^(3), consulting room 5 CFU/ft^(3), linac room 4 CFU/ft^(3), respectively.

제주도(濟州島) 마을 공동체(共同體)와 법규범(法規範)

서경림 ( Kyong Lim Suh ),한삼인 ( Sam In Han ),고호성 ( Ho Sung Ko ),고광민 ( Kwang Min Ko ) 제주대학교 탐라문화연구소 1990 탐라문화 Vol.0 No.10

Interpretation of Mutual Agreements in Internet Commerce : Focusing on "Clickwrap Contract" - Comparative Analysis of South Korean and United States Law

Seo, Kyong-Lim;Ko, Se-il 법무부 2005 통상법률 Vol.- No.64

새로운 미디어인 인터넷은 산업혁명 이후에 또 다른 혁명으로서 여러 곳에서 인류에게 새로운 변화상을 보여주고 있다. 또한 인터넷은 법률영역에서도 새로운 문제를 발생시키고 있다. 따라서 이런 영역에서 어떠한 규율과 법적 대응이 필요한지가 관심 대상이 되고 있다. 필자는 이 논문에서 지적재산권법과 계약법 양 영역에서 문제되고 있는 인터넷 약관계약에 대해서 검토하고자 한다. 현재 많은 인터넷 사이트에서 서비스 이용과 물건의 구매에 있어서 자사의 사이트를 통해서, 자신의 계약규범을 현재와 미래의 계약근거로써 사용하고 있다. 그런데 컴퓨터 모니터 화면에 보여지고 있는 약관 규범을 몇 가지 버튼을 누름으로써 계약 당사자가 그 규범에 그대로 구속되는 것이 타당한가라는 의문이 생긴다. 그러면 이런 상황에서 발생하는 "인터넷 계약에서의 진정한 당사자 합의를 어떻게 찾을 것인가?" 라는 문제가 발생한다. 인터넷 내에서는 국경과 법역의 의미가 반감되기 때문에, 이는 대륙법과 영미법을 통틀어 새롭게 제기되는 계약법적 문제라고 할 수 있다. 이러한 문제에 대해서, 본 논문은 한국과 미국의 실정법과 판례를 비교함으로써 인터넷 약관계약의 법적 문제를 고찰하고자 한다. 특히 미국의 최신 동향을 파악함으로써, 한국법에 가능한 시사점을 살피고자 한다. 논문은 첫째, 인터넷 약관계약에서 당사자의 진정한 의사의 합의가 있었는지의 여부 둘째, 비록 당사자의 진정한 의사 합의가 있었다고 하더라도, 그 계약의 구속력을 인정하는 것이 공평에 어긋난 경우에 그러한 인터넷 약관계약의 무효와 취소가 고려되어야 하는 경우 셋째, 인터넷 약관계약에서 당사자 합의를 기존 계약 규범 해석과는 어떻게 조화할 것인가의 문제에 초점을 두고 있다.

증례(證例) : 내측 측부인대 손상 환자의 가열식 화침 치험 1례

고경모 ( Kyong Mo Ko ),김재수 ( Jae Su Kim ),이봉효 ( Bong Hyo Lee ),정태영 ( Tae Young Jung ),임성철 ( Seong Chul Lim ),이경만 ( Kyung Min Lee ) 대구한의대학교 제한동의학술원 2009 東西醫學 Vol.34 No.1

Valorization of Polyethylene Terephthalate Degradation Product by Metabolically Engineered Escherichia coli

Eui Seok LIM,Youngsoon UM,Sun-Mi LEE,Gyeongtaek GONG,Ja Kyong KO,Sung Ok HAN,Jung Ho AHN 한국생물공학회 2023 한국생물공학회 학술대회 Vol.2023 No.10

압력변화에 따른 3-클로로피리딘과 염화벤조일류의 반응에 대한 연구

김세경,고영신,임종완,김영철 漢陽大學校 基礎科學硏究所 1993 基礎科學論文集 Vol.12 No.-

아세토니트릴 용매내에서 파라치환 염화벤조일류와 3-클로로피리딘의 반응을 온도와 압력변화에 따라 전기전도도법으로 측정하여 유사 1차 반응속도 상수와 2차 반응속도상수를 구하였다. 이들 반응속도상수로 부터 여러가지 활성화 파라미터들과 Hammett반응상수 ρ값을 구하였다. 압력증가에 따라 2차 반응속도상수와 Hammett ρ값은 증가하고 |-ΔV≠| 와 |-ΔS≠|값은 감소하였으며, 압력과 치환기 변화에 따른 속도론적 연구를 종합하면, 전체적인 반응은 전형적인 S?2반응 메카니즘을 따르며, 압력증가에 따라 결합 형성이 더욱 촉진된 반응 메카니즘으로 진행됨을 알 수 있다. The reaction of para-substituted benzoyl chlorides with 3-chloropyridine has been measured by means of conductometry in acetonitrile, and pseudo-first order and second order rate constants were determined. From the values of rate constants, the activation parameters and Hammett ρ values were determined. By increasing pressure, the values of k₂and Hammett ρ were increased, and decreased for |-ΔV≠| and |-ΔS≠|. From the result of kinetic studies for pressure and substituent, these reaction proceed in trypical ?? reaction mechanism and in bond formation favored with increasing pressure.

Ongoing outbreak of human adenovirus-associated acute respiratory illness in the Republic of Korea military, 2013 to 2018

( Jae-hoon Ko ),( Hyeong-taek Woo ),( Hong Sang Oh ),( Song Mi Moon ),( Joon Young Choi ),( Jeong Uk Lim ),( Donghoon Kim ),( Junsu Byun ),( Soon-hwan Kwon ),( Daeyoun Kang ),( Jung Yeon Heo ),( Kyong 대한내과학회 2021 The Korean Journal of Internal Medicine Vol.36 No.1

Background/Aims: Human adenovirus type 55 (HAdV-55), an emerging epidemic strain, has caused several large outbreaks in the Korean military since 2014, and HAdV-associated acute respiratory illness (HAdV-ARI) has been continuously reported thereafter. Methods: To evaluate the epidemiologic characteristics of HAdV-ARI in the Korean military, we analyzed respiratory virus polymerase chain reaction (RV-PCR) results, pneumonia surveillance results, and severe HAdV cases from all 14 Korean military hospitals from January 2013 to May 2018 and compared these data with nationwide RV surveillance data for the civilian population. Results: A total of 14,630 RV-PCRs was performed at military hospitals. HAdV (45.4%) was the most frequently detected RV, followed by human rhinovirus (12.3%) and influenza virus (6.3%). The percentage of the military positive for HAdV was significantly greater than the percentage of civilians positive for HAdV throughout the study period, with a large outbreak occurring during the winter to spring of 2014 to 2015. The outbreak continued until the end of the study, and non-seasonal detections increased over time. The reported number of pneumonia patients also increased during the outbreak. Case fatality rate was 0.075% overall but 15.6% in patients with respiratory failure. The proportion of severe patients did not change significantly during the study period. Conclusions: A large HAdV outbreak is currently ongoing in the Korean military, with a trend away from seasonality, and HAdV-55 is likely the predominant strain. Persistent efforts to control the outbreak, HAdV type-specific surveillance, and vaccine development are required.

고체 촉매에서 CF3COOH 의 직접 요오드화반응에 의한 CF3I 의 합성

김재덕,임종성,이윤우,최고열,이경환,김원동 한국화학공학회 2001 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.39 No.2

담체에 염을 담지한 다양한 종류의 촉매를 제조하였고 이들 촉매에 대해 반응 조건을 달리하여 CF₃COOH를 요오드로 직접 요오드화반응하여 CF₃I를 얻는 연구를 실시하였다. 촉매의 제조 변수는 담체의 효과, 담지된 염의 종류 및 염의 담지량이고 반응 조건의 변수는 반응온도, 접촉시간 그리고 반응물의 주입 몰비이다. 실험결과는 접촉 시간이 길어질수록 높은 CF₃I 수율을 얻었고 I₃/CF₃COOH의 주입 몰비 1이상과 반응온도 400℃정도에서 최적의 반응조건이었다. 촉매의 담체는 알루미나보다는 활성탄이 우수하였고 담체에 담지된 염의 함량과 종류는 7.5%가 담지된 CuI가 좋았다. Synthesis of CF₃I by direct iodination of CF₃COOH with iodine was carried out in a flow reactor over various salt-impregnated catalysts. In this experiment, the effects of support types, salt types and salt contents for the manufactured catalysts and also those of reaction conditions such as reaction temperature, contact time and feeding mole ratio of reactant were tested. A longer contact time led to the higher yield of CF₃I. The optimized reaction conditions were above I of I₂/CF₃COOH mole ratio and about 400 ℃ of reaction temperature. Active-carbon as a support showed better performance than alumina. For the salt impregnated on support, the best results of both salt content and salt type were 7.5 weight percentage and CuI type, respectively.