분변토를 이용한 VOCs 흡착에 관한 기초연구

김재홍,손희정,김장호,김수생,서정민 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.2

This study was carried out two point view that reuse of sludge and adsorption of benzene, toluene and o-xylene of VOCs in cast, carbonized cast and activated carbon. The cation exchange capacity of cast and carbonized cast were 59.2, 112 meq/l00g, respectively. The specific surface were 560, 800 ㎡/g, respectively. The average removal rates of benzene by 50g cast of 50% hydrous cast, anhydrous cast, carbonized cast, activated carbon were 15.0, 41.2, 88.2, 99.4% in 60min retention time. The average removal rates of toluene by 50g cast of 50% hydrous cast, anhydrous cast, carbonized cast, activated carbon were 12.5, 34.2, 88.2, 99.5% in 60min retention time. The average removal rates of o-xylene 50g cast of 50% hydrous cast, anhydrous cast, carbonized cast, activated carbon were 8.8, 28.5, 84.8, 98.1% in 60min retention time. The adsorption efficiency of test absorbent was in order of benzene > toluene > o-xylene.

충격기류식 여과집진장치의 펄스간격 및 분사거리에 따른 압력손실변화에 관한 기초 연구

서정민,최금찬,박정호 한국환경과학회 2004 한국환경과학회지 Vol.13 No.3

The change of pressure drop according to the change in the inlet concentration, pulse interval, and injection distance of pulse air jet type bag filters, and the effect of venturi installation are as follows. The pressure drop with the range of 30 to 50㎜H₂O varies according to the injection distance with 30, 50, 70, 90sec and the inlet concentration of venture built-in fabric filters. For the lower concentration of 0.5g/m³ and lg/m³, the pressure drop(ΔP) was stable 60 to 90minutes after operation. For the higher concentration of 3g/m³, as 4P continues to go up, pulse interval should be set shorter than 30 seconds. The pressure drop with the injection distance of 110㎜, when inlet dust concentration is 0.5g/m³ or lg/m³, is 1.3 to 2 lower than with the injection distance of 50, 160, and 220㎜, which means that the inflow amount of the secondary air by the instant acceleration is large. The injection distance of 2g/m³ and 3g/m³ has the similar pressure distribution. The higher inlet concentration is, the more important pulse interval is than injection distance. The pressure drop has proved to be larger when inlet concentration is lower and injection distance closer, on condition that the venturi is installed. The change in the pressure drop was smallest when injection distance was 50㎜, followed by 220㎜, 160㎜, and 110㎜.

밀양·창원지역의 PM10 중 음이온 성분 및 금속성분의 화학적 특성에 관한 연구

서정민,전보경,최금찬 한국환경과학회 2004 한국환경과학회지 Vol.13 No.12

PM10 concentration of total 48 samples collected from 4 sites (the root of Miryang University, Sangnam township Office in Miryang. the root of Changwon elementary school, and Junam reservoir in Changwon) turned out to range from 42.29 to 69.49μg/m², and the average concentration was the root of Changwon elementary school (69.49 μg/m²)>the root of Miryang university (58.59μg/m²)>Junam reservoir (43.56μg/m²)>Sangnam township Office (42.29 μg/m²). In particular, Junam reservoir, the Clean Area, had a slightly higher value than Sangnam township Office. It was thought although the site was plane and windy without pollutants around. it had a higher concentration value influenced by external factors including bigger population and a northeasterly wind due to a newly-established industrial complex nearby. As for water-soluble ions among PMI0 particle collected in Miryang and Changwon area, SO42- accounted for 50% and NO3-, was 35%, and the concentration order was SO42- >NO3- > CI- >F-. As for the average concentration of metallic components among PM10 particle collected in Miryang and Changwon area. the root of Changwon elementary school had the AI concentration, Fe concentration and Zn concentration 4 times, 3 times and 1.5 times that of Junam reservoir, respectively. The root of Miryang University had the AI concentration 2 times that of Sangnam township Office, and had Fe concentration and Zn concentration 1.2~1.5 times those of Sangnam township Office. When it comes to the relation between metallic elements and meteorological factors in Changwon area, the highest coefficient of correlation was between temperature and humidity with 0.92, and temperature and wind speed turned out in the reverse correlation. The coefficient of correlation between Al and Cr was as high as 0.78. Among metallic elements, the coefficient of correlation between Cu and Pb, Cd, Al were 0.84, 0.85, 0.79, respectively. It is thought that the high coefficient of correlation between Cu and Pb is ascribed to busy traffic and wind in the urban areas, Sammun-dong and Gagok-dong in Miryang. Meanwhile, the coefficients of correlation between Fe and Cu, Al, Zn, Cd, Pb were in the reverse correlation. These coefficients of correlation are attributed to the difference in pollutant sources, rather than difference in pollutant and non-pollutant.

일본기독교인들의 한국문제에 대한 평론 분석(1910-1945)

서정민 연세대학교 신과대학 2009 신학논단 Vol.56 No.-

This article amis to examine inclination and characteristics of positions or opinions of Japanese Christians by analysis critical essays in the colonial period of Korean History by Japan. Early Japanese Christians were indicated as 'non-national people' from their national society. So it is criticised that they strongly took the lead in achievements of national purposes and adhered the adaptive attitude toward the nation in oder to overcome the recognition. These characteristics were reflected in the criticism of issues of Korea and the assessment about Christianity in Korea by early Japanese Christian leaders. Therefore, the majority treated the issues of Korea with not conscience as Christians but Japanese nationalism. But there were just a few prophetical group which had resistance and opposite opinions. This study analysed the major national position and the minor prophetical position through the real cases of christianity criticism about the issues of Korea.

Benedetto Croce의 歷史觀에 對한 理解

서정민 연세대학교 신과대학 2003 신학논단 Vol.31 No.-

제중원 선교공동체의 성격 : 연합, 연대성을 중심으로 A Study of 'Combination' or 'Cooperation'

서정민 연세대학교 신과대학 2002 신학논단 Vol.30 No.-

선교기관으로서 제중원이 지닌 특성을 연합, 혹은 연대적 성향을 중심으로 논구하고자 한 것이 이 글의 목표였다. 이 목표는 대체로 일정한 근거를 확보한 것으로 보인다. 문제는 그와 같은 제중원의 ‘연합성’이 단순히 한국에서 처음 시작된 기독교 기관의 ‘산실’이라는 형태적 제한에 국한된 의미인가, 아니면 그 세부적 특징이나 향후 진로로 보아 일정한 역사적 의미를 부여할 만한 것인가를 가늠하는 일이다. 우선 제중원의 연합적 성격을 영역별로 간추리고 그 의미를 추론하면 다음과 같다. 첫째, 선교금지 상황하에 구형된 관민합작의 연합성이다. 어떤 선교사에서도 금교정책을 고수하고 있던 국가나 왕실과 선교부가 합작으로 실제적으로 선교기관인 활동조직체를 설립한 예를 찾기는 거의 불가능하다. ‘의료를 통한 선교’라는 목표의 선교부, ‘근대적 의료기관의 도입’이라는 목표의 한국조정이 상호 지닌 공통분모에 힘입어 관민합작의 선교기관을 형성한 일 자체가 제중원 연합성의 출발이다. 둘째, 다 교파, 혹은 교파주의 선교 역사를 지닌 한국 선교지에서 교파연합의 활동곤간을 구축한 연합성이다. 대표적으로 장, 감 양 교파가 선교 성과의 선두를 다투던 상황에서 일정기간을 공동 활동의 장으로 상호협력의 근거로 제중원을 활용한 측면은 초기 상황이라는 제한점을 감안한다 하더라도 한국에서의 교파협력의 훈련되는 한 시작이 아닐 수 없다. 셋째, 다양한 선교신학을 지닌 선교사 개인간의 차별적 입장을 공존시킨 연합성이다. 각 교파나 선교회가 신학적 인식은 물론이고 선교사 개인간에도 선교 자체의 의미나 정의가 다 다를 수밖에 없다. 예를 들어 ‘의료 시혜’하나만 놓고도 고통받는 환자를 그리스도의 정신으로 치료하여 주는 일 자체가 선교라고 생각하는 입장에서부터, 의료를 통해 선린의 관계가 형성된 후에는 필히 그에게 그리스도의 복음을 전하여서 신앙적 고백을 하게끔 전도하여야 한다는 선교론에 이르기까지 그 범주는 다양하다. 이런데 이렇듯 다른 선교신학과 개인의 성향이 초기 제중원 선교공동체 안에서는 함께 존재하였다는 점이다. 이들 간에 존재한 갈등의 실체를 넘어서서 이들 다양한 선교론의 공존 자체가 의미를 지닌다. 넷째, 제중원 선교 공동체 안에서 각각 시도되고, 태동한 여러 형태의 선교기능이 효과적으로 연결되었다는 연합성이다. 제중원은 그 주된 기능이 병원이다. 그러나 시작과 함께 의학교육기관으로서의 역할을 감당할 각오와 추진 의욕을 시행하였고 마침내 제중원 의학교와 세브란스 의과대학을 성립시켰다. 뿐만 아니라 제중원 신앙공동체가 선교사들만의 집회, 한국인 초기 신자들의 세례 공동체, 한국 초대 교회들과의 관련과 제휴 등으로 이행되다가 마침내는 서울 초기 장로교회의 한 형태로 발전한 흔적에서 살필 때 제중원은 교회 태동처로서의 역할도 감당하였다. 이는 ‘병원’, ‘학교’, ‘교회’라는 초기 한국 선교의 ‘트라이앵글’ 선교연대의 한 원형이 된 의미를 지닌다.

언더우드의 근대 문서운동 연구

서정민 연세대학교 신과대학 2004 신학논단 Vol.37 No.-

해양 갈조류를 생물흡착제로 이용한 납흡착 특성 연구

서정호,감상규,오영희,이동환,이민규 동의대학교 기초과학연구소 1998 基礎科學硏究論文集 Vol.8 No.1

Lead sorption performances by biomass of nonliving, dried marine brown algae Undaria pinnatifida, Hizikia fusiformis, and Sargassum fulvellum used as biosorbent materials were investigated. As the amount of biosorbent materials added was increased, the lead removal by biosorbent materials increased but the lead biosorption capacities decreased. However, with increasing initial lead concentration the lead biosorption capacities by the biosorbent materials increased but lead removal efficiencies decreased. In the range of initial lead concentration(C_0) 10-500 mg/L the lead biosorption capacities and removal efficiencies by the biosorbent materials increased with increasing pH. Among the biosorbent materials used in this study, the lead biosorption capacities decreased in the following sequence: U. pinnatifida $gt; H. fusiformis $gt; S. fulvellum. The lead biosorption by biosorbent materials were expressed by the Langmuir isotherm better than the Freundlich isotherm. The biosorption rate could be expressed by the first order reaction rate equation for initial lead concentration like that r_ad = 0.288C_0 for U. pinnatifida, r_ad = 0.255C_0 for H. fusiformis, and r_ad = 0.161C_0 for S. fulvellum.

운동유발성 아나필락시스 환자에서 혈 중 tryptase 측정 1례

예영민,임선교,서유진,최정희,서창희,남동호,박해심 대한천식 및 알레르기학회 2004 천식 및 알레르기 Vol.24 No.1

Exercise-induced anaphylaxis(EIA) is a medical emergency in that it derives from a physical allergy. We reported a case of food-independent EIA based on history and laboratory data. A 40-year-old male patient was presented with generalized urticaria, angioedema, and syncope after jogging. He had suffered from allergic rhinitis for 25 years. Increased level of serum tryptase was noted. Mast cell activation might be suggested in the pathophysiologic mechanism of EIA. (J Asthma Allergy Clin Immunol 24 : 152-5, 2004)

Passive Sampler를 이용한 진주시 NO_2 농도 분포

박정호,전기일,서정민 진주산업대학교 농업기술연구소 2000 農業技術硏究所報 Vol.13 No.-

In 1996, about 80 % of total emission in Chinju was emitted from mobile source, with about 26.9 % of nitrogen dioxide (NO_2) coming from mobile source. In this study, the distributions of NO_2 concentrations were investigated with Passive Sampler in Chinju. Passive Sampler can be a useful method to evaluate distribution of a detailed concentration in large area. The concentrations of NO_2 in downtown Chinju were appeared in the rage of 0.0046∼0.0285 ppm. And the concentrations of NO_2 in rural areas were appeared in the rage of 0.0018∼0.0176 ppm at the road side and 0.0014∼0.0064 ppm at the green zone. The mean concentration of NO_2 was appeared to be about 0.0043(±0.0020) ppm in Chinju. The NO_2 concentrations at the downtown site were about 21∼98 times higher than in rural areas.