췌장질환 : 췌장염의 병태생리

박승국 ( Seung Kook Park ) 대한내과학회 1975 대한내과학회지 Vol.18 No.5

Dynamic state 활성슬러지 공정에서 혐기조가 영양염류 ( C , N , P ) 처리에 미치는 영향

박승국(Seung Kook Park),서인석(In Seok Seo),연동석(Dong Seok Yeon),이상일(Sang Ill Lee) 한국물환경학회 1999 한국물환경학회지 Vol.15 No.3

Anaerobic reactor in BNR(Biological Nutrients Removal) process is very important for phosphorus removal. In this research, the effect of ARV(Anaerobic Reactor Volume) and biomass concentration on biological nutrients removal in dynamic state activated sludge processes was evaluated. IAAS(Intermittently Aerated Activated Sludge) and DynaFlow Dynamic Flow Intermittently Aerated Activated Sludge) process were operated as a dynamic state activated sludge process. ARV(Anaerobic Reactor Volume) and biomass concentration have not an great effect on total nitrogen and organic removal efficiencies, whereas, have a great effect on total phosphorus removal efficiencies, especially, at low biomass concentration. When ARVF(Anaerobic Reactor Volume Fraction) were 0, 7, 13% at SRT 5 day, phosphorus removal efficiency were <30, 64, 84%, respectively. At SRT 10 and 12 days, difference of phosphorus removal efficiency on ARVF were only 7%. As bulking was occurred, phosphorus removal were deteriorated, whereas organic and nitrogen removals were not. When biomass concentration was over 5,000 ㎎/liter, the effect of anaerobic reactor on phosphorus removal was not important in both systems.

알코올모델용액을 이용한 여러 종류 활성탄의 휘발성화합물 흡착특성

박승국 ( Seung Kook Park ),이명수 ( Myung Soo Lee ),김병호 ( Byung Ho Kim ),김대옥 ( Dae Ok Kim ) 한국산업식품공학회 2010 산업 식품공학 Vol.14 No.3

4가지 서로 다른 소재(대나무, 목재, 피탄, 석탄)로 제조된 10가지 활성탄에 대해서, 30% 알코올모델용액에 용해되어 있는 6가지 휘발성화합물(isoamyl alcohol, hexanal, furfural, ethyl lactate, ethyl octanoate, 2-phenyl ethanol)의 흡착효율을 평가하였다. 이들 6가지 휘발성화합물은 알코올음료에서 종종 발견되며, 농도가 높을 경우에는 숙취의 원인이 될 뿐만이 아니라 위스키나 보드카와 같은 술에서 이취의 원인물질이 되기도 한다. 6가지 휘발성화합물이 용해되어 있는 30% 알코올모델용액 200 mL에 0.2 g의 활성탄을 넣고 16시간 일정한 속도로 교반한 후에 처리된 용액을 2가지 시료처리방법(direct liquid injection and headspace-solid phase microextraction)을 이용 GC분석을 수행하여 활성탄의 제거효율을 구하였다. 활성탄의 제거효율은 휘발성화합물의 종류와 활성탄제조의 소재에 따라 차이가 있었으며, ethy octanoate, 2-phenyl ethanol, hexanal에 대한 제거율은 34-100%로 높은 편이나, isoamyl alcohol, ethyl lactate, furfural의 제거율은 5-13%로 비교적 낮은 편이었다. 활성탄의 종류에 따른 제거율은 대나무활성탄인 A가 isoamly alcohol, hexanal, ethyl lactate, furfural 등 대부분의 휘발성화합물에 대해서 유의적으로 높았으며(p < 0.05), 특히 알코올음료에서 숙취와 이취물질이며 fusel oil의 주성분인 isoamyl alcohol, aldehydes(hexanal, furfural), 2-phenyl ethanol에 대한 흡착효율이 높은 것으로 확인되었다. Ten commercial activated carbons (ACs) prepared from four different sources (bamboo, wood, peat, and coal) were evaluated for their adsorptive efficiency of six volatile compounds (isoamyl alcohol, hexanal, furfural, ethyl lactate, ethyl octanoate, 2-phenyl ethanol) which were dissolved in a 30% alcoholic model solution. These six volatile compounds are frequently found in alcoholic beverages and possibly contribute to physiological hangover due to their high concentrations. They are also generally regarded as off-flavor compounds at certain levels in alcoholic beverages such as whisky and vodka. Two hundred mL of 30% alcoholic solutions containing these six volatile compounds were treated with 0.2 g of ACs while stirring for 16 hr; the treated solutions were then measured for their adsorptive efficiencies (or removal efficiencies) by gas chromatographic analysis using two different sampling methods (direct liquid injection and headspace-solid phase microextraction). The adsorptive efficiencies of the ACs varied depending on the identity of the volatile compounds and the source material used for making the ACs. Ethyl octanoate, 2-phenyl ethanol, and hexanal were removed at high efficiencies (34-100%), whereas isoamyl alcohol, ethyl lactate, and furfural were removed at low efficiencies (5-13%). AC prepared from bamboo showed a high removal efficiency for isoamyl alcohol, aldehydes (hexanal and furfural), and 2-phenyl ethanol; these major fusel oils have been implicated as congeners responsible for alcohol hangover.

증례 : 복부대동맥류 및 발생동맥협착을 동반한 Behcet`s syndrome 1 예

박승국 ( Seung Kook Park ),송홍석 ( Hong Suck Song ),이인규 ( In Gyu Lee ),김병준 ( Byeang Jung Kim ),박성배 ( Seong Bae Park ),서정규 ( Chung Kyu Suh ) 대한내과학회 1985 대한내과학회지 Vol.28 No.1

DynaFlow 공정을 이용한 양돈폐수의 유기물 질소 인 동시처리

박승국(Seung Kook Park),김병군(Byong Goon Kim),원성연(Seung Yeon Weon),이상일(Sang Ill Lee) 한국물환경학회 2000 한국물환경학회지 Vol.16 No.1

2 stage IAAS (intermittently aerated activated sludge) and DynaFlow (dynamic flow intermittently aerated activated sludge) systems without anaerobic reactor were applied to treat swine wastewater of high strength of organic and nitrogen contents. COD_(cr), TKN and total phosphorus concentration in influent were averaged to 4, 300㎎/L, 650㎎-N/L and 68㎎-P/L, respectively. Removal efficiency of total nitrogen was obtained to over 92%. However, as increase of nitrogen loading to over 0.6㎏-N/㎥ ·day, nitrogen removal efficiency was dropped to 80%. NO₂-N and NO₃-N concentration were increased up to 55㎎/L and 30㎎/L, respectively. The increase of NO_x-N concentration can be attributed to low C/N ratio and toxic effect of free ammonia to Nitrobacter sp.. Sludge rising problem in clarifier was observed as increase of influent TKN of over 600㎎/L. The significant difference in nitrogen removals between 2 stage-IAAS and DynaFlows was observed in starting period. Adaptation period for DynaFlows was only 2 days, whereas that of 2 stage-IAAS was 20 days. This means that DynaFlow was better process to treat nitrogen in fluctuating strength of pollutants. From the experimental results, both 2 stage-IAAS and DynaFlow processes are supposed to feasible processes to treat nutrients in high strength wastewater, such as, poultry and swine wastewater.

음식물 쓰레기의 발효 및 탈질 , 탈인 공정에 외부탄소원으로 활용

박승국(Seung Kook Park),김병군(Byung Goon Kim),서인석(In Seok Seo),이상일(Sang Ill Lee) 한국물환경학회 2001 한국물환경학회지 Vol.17 No.2

Recently, major concerns in the area of environmental engineering have been the effective treatment of waste, and removal of nutrients for public health. Therefore, this study was initiated to evaluate the potential utilization of fermented food waste as external carbon sources for nitrogen and phosphorus removal in wastewater, eventually recycling of useful sources from wastes. Especially, we evaluated the effects of the environmental parameters on the production of fermented organic acids and the denitrification and phosphorous removal by addition of the fermented food waste. Initial concentration of total solid (TS) contained in the diluted food wastes was 78,000 ㎎/L. It was observed that the mixing and adjustment of pH in fermentation process were major factors in producing the fermented organic acids. When fermented organic acids were used as external carbon sources, total denitrification and phosphorous release rates were 5.62 ㎎NOx-N/gVSS ·hr and 3.89 ㎎PO₄-P/gVSS ·hr, respectively. These rates were similar to, or even higher than those in the case of acetate. Especially, the fermented food wastes having more than 200 of C/N ratio after fermentation proved to be excellent external carbon sources. Furthermore, it seems that the same sources of external carbon can be used in removing N and P of wastewater.

원자력시설 해체작업 단위생산성 산출 시스템

박승국 ( Seung-kook Park ),문제권 ( Jei-kwon Moon ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.1

해체대상 원자력시설의 해체계획 수립 및 엔지니어링을 위한 전산 시스템이 개발 중에 있다. 한국원 자력연구원의 연구로 1,2호기와 우라늄변환시설의 해체 활동에서 얻어진 귀한 해체 경험 정보/자료와 해체 대상 시설의 특성자료를 이용하여 해체작업 단위 생산성 산출 시스템(DEWOCS)을 개발하였다. 이 시스템을 통해 생산된 해체작업 단위생산성 인자값은 해체 엔지니어링 시스템의 개발에 중요한 자료를 제공하여 원자력시설의 해체설계에 활용될 것이다.

해체정보 관리시스템

박승국(Seung-Kook Park),지연희(Yeon-Hee Ji),박진호(Jin-Ho Park),정운수(Un-Soo Chung) 한국정보기술학회 2010 Proceedings of KIIT Conference Vol.2010 No.-

원자력시설의 해체사업은 국내에서는 최초로 수행된 사업이다. 해체사업 활동에서 발생되는 해체 정보 및 자료의 관리와 사업의 수행을 위해 해체 정보관리 시스템 (DECOMMIS)을 개발하였다. DECOMMIS를 이용하여 해체 작업 활동, 해체 폐기물 관리, 해체 방사선 안전관리 및 품질 관리에 관한 정보/자료를 입력, 처리, 관리하고 필요 시 출력하여 활용하였다. At the Korea Atomic Energy Research Institute (KAERI), two research reactors (KRR-1 and KRR-2) and one uranium conversion plant (UCP) were decommission. A project was launched in 1997, for the decommissioning of these reactors with the goal of a completion by 2008. Another project for the decommissioning of the UCP was launched in 2001. The physical dismantling works were started in August 2003 and the entire project was completed by the end of 2009. KAERI has developed a computer information system, named DECOMMIS, for a project management with an increased effectiveness for decommissioning projects and for a record keeping for the future decommissioning projects. This decommissioning information system is consists of three sub-systems; code management system, data input system (DDIS) and data processing and output system (DDPS). The DECOMMIS was applied to the decommissioning projects of the KRR and the UCP, and was utilized to give information to the staff for making decisions regarding the progress of the projects. It is also to prepare the reference data for the R&D program which is for the development of the engineering system tools and to maintain the decommissioning data for the next projects. In this paper, the overall system will be explained and the several examples of its utilization, focused on a waste management and a manpower control, will be introduced..

원자력시설 해체 정보관리 시스템

박승국 ( Seung-kook Park ),지연희 ( Yeon-hee Ji ),박진호 ( Jin-ho Park ),정운수 ( Un-soo Chung ) 한국정보처리학회 2010 한국정보처리학회 학술대회논문집 Vol.17 No.1

원자력시설의 해체사업은 국내에서는 최초로 수행된 사업이다. 해체사업 활동에서 발생되는 해체 정보 및 자료의 관리와 사업의 수행을 위해 해체 정보관리 시스템 (DECOMMIS)을 개발하였다. DECOMMIS를 이용하여 해체 작업 활동, 해체 폐기물 관리, 해체 방사선 안전관리 및 품질 관리에 관한 정보/자료를 입력, 처리, 관리하고 필요 시 출력하여 활용하였다.

해체대상 원자력시설의 특성관리 프로그램 개발

박승국 ( Seung-kook Park ),지연희 ( Yeon-hee Ji ) 한국정보처리학회 2010 한국정보처리학회 학술대회논문집 Vol.17 No.2

원자력시설의 해체 계획을 수립하는데 해체 대상 시설의 성격을 조사하고 파악하는 것은 매우 중요하다. 해체 대상 원자력시설의 특성자료 조사 결과는 해체 페기물의 양을 예측하고, 해체 사업의 비용 산정에 크게 활용이 된다. 이를 목적으로 해체사업 대상 시설의 특성 자료를 관리하는 컴퓨터 시스템인 해체시설 특성 관리시스템, DEFACS (Decommissioning FAcility Characterization DB System)를 개발하였다.