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산업단지 발생 액상폐기물(폐유와 폐유기용제)의 고온연소 특성
김민철(Kim, Min-Choul),이재정(Lee, Jae-Jeong),석민광(Suk, Min-Kwang),이강우(Lee Gang-Woo),손병현(Shon Byung-Hyun) 한국산학기술학회 2009 한국산학기술학회논문지 Vol.10 No.12
산업단지에서 발생하는 액상폐기물(폐유와 폐유기용제)을 고온반응기에서(온도 1,250~1,400℃, 압력 1기압) 연소시키면서 연소 특성, 유해물질 분해정도 및 연소 후 배출가스 특성 등을 살펴보았다. 산소와 폐기물의 질량비 (O₂/waste mass fraction)가 1.53 이하로 줄어들 때 반응기는 산화분위기에서 환원분위기로 전환되었고 연소 후 배출가 스는 NOx 배출량이 감소하고 합성가스의 발생비율이 증가하였으며 BTEX류는 99.99%이상 분해되는 것으로 나타났 다. 본 연구에서 제안한 시스템 및 조업조건 하에서 고농도의 액상폐기물(폐유와 폐유기용제)을 처리한 결과 미량 오 염물질의 배출농도는 매우 낮은 값을 보여 액상폐기물의 처리에 적합한 것으로 판단되며 또한 연소 후 합성가스도 연료로 활용할 수 있을 것으로 사료된다. This study was investigated to determine the combustion characteristics, decomposition efficiency, and the flue gas concentrations after combustion in the high temperature reactor(1,250~1,400℃, 1 atm) for the liquid wastes(waste oil and waste solvent) generated from the industrial complex. The concentration of nitrogen oxide(NOx) is decreased and the synthetic gas is increased when the mass ratio of O₂/waste is about 1.53 because the reaction condition was changed to reduction state. And BTEXs(benzene, toluene, ethylbenzene, xylene) are decomposed more than 99.99%. If the highly concentrated liquid waste (waste oil and waste solvent) is treated under the operating conditions suggested by this study, our treatment method for the liquid waste was found to be proper because of the contaminants emission concentration is very low. In addition, the synthetic gas after combustion can be used as an alternative fuel.
김백준(Kim, Baek-Jun),이유정(Lee, Yu Jeong),석민철(Suk, Min-Chul),이권형(Lee, Kweon-Hyoung) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.2
The space of public libraries has been changed in the direction of supporting user satisfaction and various activities, focusing on the role of data preservation and education. However, unlike before, the use of space is not suitable to accommodate various needs, such as the disappearance or reduction of existing space to provide services and programs. In particular, a method of calculating the size according to the number of people within a certain range or calculating the size by referring to the average size of other nearby libraries was proposed. In this study, factors influencing the number of users were derived through the analysis of previous studies. The factors derived from previous studies are limited to the physical factors necessary to calculate the size at the pre-planning stage, so the influencing factors were supplemented and added to four categories: education, culture, commerce, and transportation facilities. As of 2019, statistical data from 33 public libraries in Busan were analyzed to collect data within 0-1km walking distance, and hierarchies were classified according to the number of visitors by region to derive influencing factors that affect visitors regardless of size. The analysis method was conducted in two ways through impact analysis and regression analysis according to the visitors award/middle/lower hierarchy. As a result of the study, factors influencing high school libraries such as the number of high school students, parks, and movie theaters were derived. Through the results of these studies, it is expected that a hypothesis can be established based on the physical factors of the Busan Library and used to establish a calculation formula for calculating the size of the public library in the future.
양숙자(Yang, Sook Ja),함옥경(Ham, Ok Kyun),한숙정(Han, Suk Jung),이영숙(Lee, Young Sook),한영란(Han, Young Ran),백희정(Baek, Hee Chong),심문숙(Shim, Moon Sook),권명순(Kwon, Myung Soon),김광숙(Kim, Gwang Suk),석민현(Suk, Min Hyun) 한국보건간호학회 2011 韓國保健看護學會誌 Vol.25 No.2
Purpose: This study was conducted to analyze trends in research papers published in the Journal of Korean Public Health Nursing, and to compare and contrast similarities and differences of papers before and after listing in the Korea Citation Index (KCI) in 2007. Methods: A descriptive study was conducted with 266 published studies during the 10-year period. The criteria for analysis included types of research, characteristics of researchers and participants, designs, data collection methods and study instruments, ethical considerations, data analysis, and keywords. Results: Studies conducted with grants constituted 23.7%, and students (32.3%) and general populations (25.2%) comprised the largest proportion of the study participants. The majority of the papers were quantitative research (93.2%), and self-reported methods (63.1%) were most frequently utilized. Seventy percent of the studies obtained verbal consent from the participants. Among the study instruments, psychosocial indicators (41.1%) were most frequently employed. The trends indicated that grant studies, students and general populations as study participants, and experimental studies increased, and use of written consent increased after KCI registration. Conclusions: The results could be used to understand the context of scientific research and to improve the quality of the research papers published in the Journal of Korean Public Health Nursing.
IQF 굴( Crassostrea gigas ) 복합엑스분의 추출 및 풍미개선
황석민 ( Seok Min Hwang ),황영숙 ( Young Suk Hwang ),남현규 ( Hyeon Gyu Nam ),이재동 ( Jae Dong Lee ),류성귀 ( Seong Gwi Ryu ),오광수 ( Kwang Soo Oh ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.6
To develop an effective use for poor-quality individually quick-frozen (IQF) oysters Crassostrea gigas stored for a long period, the extract conditions, quality characteristics, and optimum reaction flavoring (RF) conditions of a complex extract from these IQF oysters were investigated. The moisture, pH, and volatile basic nitrogen contents of IQF oysters stored for 18 months (18M-IQFO) were 77.9%, 6.32, and 17.9 mg/100 g, respectively. Three different kinds of extract were prepared from 18M-IQFO: a hot-water extract (HE), scrap enzymatic hydrolysate (EH), and complex extract (CE). The respective extracts contained 5.5, 8.6, and 6.6% crude protein and 281.7, 366.0, and 343.0 mg/100 g amino nitrogen, and had 811, 359, and 1,170 mL/kg extraction yields. The CE was superior to the traditional HE in terms of the extraction yield, amino-nitrogen content, and organoleptic qualities, except for the odor. To improve flavor via the Maillard reaction, the reaction system used to produce a desirable flavor comprised CE (Brix 30°), 0.4 M glucose, 0.4 M glycine, and 0.4 M cysteine solution (4:2:1:1, v/v). The reaction time and pH were the independent variables, and the sensory scores for baked potato odor, masking shellfish odor, and boiled meat odor were the dependent variables. The surface response methodology (RSM) analysis of the multiple responses optimization gave a reaction time of 120.6 minutes and pH 7.33 at 120°C. The reaction improved the flavor of CE considerably, as compared to that of the unreacted extract.
회전류 생성 난류 발생기를 적용한 진공관형 태양열 매니폴드의 성능 특성 연구
서석민(Suk Min Seo),노세현(Se Hyeon Noh),이민성(Min Sung Lee),박찬우(Chan Woo Park) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.11
The purpose of this study is increasing the efficiency of the solar collectors heat transfer rate. By inserting the turbulence generator into manifold in the solar collector, compare the heat transfer rate of with or without the turbulence generator and analyze. The main idea is increasing heat transfer rate without changing any other variable, except pressure difference by inserting the turbulence generator.
자동차 가죽시트의 내구오염 메커니즘 규명 및 평가법 개발
최석민(Suk-Min Choi),구현진(Hyun-Jin Koo),장갑식(Gap-Shik Chang),정원욱(Won-Wook Jung),민병훈(Byung-Hoon Min),이태희(Tae-Hee Lee) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
We have proposed a newly designed test and assessment method for simulating the stains of automotive leather seat through analyzing the stain accumulation mechanism in the field. The major causes of leather seat stains were found to be the combination of stain accumulation from outside and photo degradation and shrinkage due to high temperature and sun light inside of the car. In addition, the objective assessment methods of color difference after stain resistance test was proposed comparing with subjective assessment method using grey scale. Using the newly designed test and assessment method, the field stain behavior can be simulated within a short test time and also evaluate the color difference more accurately.
서울시·자치구 CCTV의 효율적 운영과 개인화상정보 보호를 위한 정책방안 연구
이석민 ( Suk Min Lee ),원종석 ( Jong Seok Won ),유호선 ( Ho Sun Yoo ) 서울시정개발연구원 2010 연구보고서 Vol.2010 No.16
This study attempts to recognize various phenomena and issues which are caused by public institution`s CCTV: operational problems, protection of the personal image data, operation of the CCTV integrated control center, and so on. Additionally, this does to explore several solutions to those problems. On the basis of the solutions about CCTV, we suggest policy directions to improve installation process and operational efficiency from various perspectives. To suggest policy directions, we consider various aspects of CCTV which are major issues, laws and guidelines, status of the established CCTV in Seoul through literature review, depth interview about the person in charge of CCTV, professional consultation, and so on. Based on those considerations, we suggest policies to make operational and managerial improvement are as follows: ·founding the department which handles everything about CCTV, ·invigorating the CCTV consultative group, alterating the usage purpose of the CCTV, ·improving the CCTV installation process, ·improving the management of personal image data, ·improving the CCTV-related guidelines. In other perspectives, we suggest solutions to improve personal image data protection system are as follows: ·establishing the personal data protective officer in charge of approval process, ·improving personal image data protecting operation, ·reinforcing regulations on the leaking of personal image data, ·strengthening physical security on the CCTV control facilities. Finally, we suggest establishing scope, stepwise activities, road map to which establish integrated CCTV control center in overall Seoul metropolitan city. We hope that results of this study will help to develop the present state of operational efficiency and to protect the personal image data in Seoul.