황 첨착활성탄을 이용한 구리의 제거

최성우,김영환 경주대학교 건설환경연구소 2007 建設環境論叢 Vol.- No.9

The purpose of this study is to enhance removal efficiency of copper by adsorption in aqueous solution. A commercial activated carbon was used. It was treated by heating from 30 to 900 "C in S02 gas. I achieved a high removal efficiency with ACS. The removal percent was respectively studied about the effect of ACS dosage, the initial pH of aqueous solution. In copper adsorption experiment, the amount of adsorbed copper increase with an increase in dosage of Adsorbent. the best removal efficiency was obtained from dosage 13.3 g/L of ACS. The maximum removal percent was 93%. The amount of adsorbed copper increase with an increase in pH from 3 to 5. The maximum removal efficiency in copper adsorption experiment with ACS at pH 3, 4, 5 was at pH 5. Isotherms for the adsorption of copper on ACS was developed and the equilibrium data fitted well to the Langmuir isotherm model.

대구지역 부유분진중 Polycyclic Aromatic Hydrocarbons의 발생원 특성

최성우,윤성훈 한국환경보건학회 2000 한국환경보건학회지 Vol.26 No.2

The purpose of this study was to investigate the seasonal variation of PAHs and to estimate their source characteristics in Taegu area. To do this, four sampling sites were selected to represent an industrial, a traffic, a traffic & residential, and a residential area in Taegu. Total of 72 samples had been collected from January, 1999 to September, 1999 on glass micro fiber filters by high volume air sampler. The PAHs in the total suspended particulate were extracted by a soxhlet process with dichloromethane and analyzed by GC/MSD, GC/FID. A statistical analysis was performed for the PAHs data set using a principal component analysis to derive important factor inherent in the interactions among the variables. The specific conclusions of this research are: 1) There was a significant seasonal and local variation in the atmospheric concentration of PAHs. The seasonal variation is winter>spring>Fall>summer, and the local variation is industrial>traffic>graffic & residential>residential area. 2) To evaluate the correlation between a measured PAHs and other affecting factors such as air pollutant concentration and meterological data, statistical analysis was performed. PAHs and other affecting factors such as air pollutant concentration and meterological data, statistical analysis was performed. PAHs have negative correlation with temperature (r=-0.593, p<0.05), radiation(r=-0.535, p<0.05), and O3(r=-0.719, p<0.05), but have positive correlation with NO(r=0.615, p<0.05) 3)Finally, multivariate analysis was performed for the PAHs dat set to identify and to estimate the source contributions of PAHs. According to results of statistical analysis, it could be identifies as three factors such as vehicular/gasoline, vehicular/diesel, and combustion in Taegu area.

새로운 무기 응집제 개발에 따른 특성

최성우,우성훈,윤철종,곽명화,서향미,박승조 동아대학교 환경문제연구소 2000 硏究報告 Vol.23 No.1

This study has carried out the coagulation tests for tannery wastewater including high-level suspended solids and organic matters to determine the optimum pH and coagulant dosage and to characterize several coagulants for coagulation. In case of optimum pH range test, we know that multi-coagulants are not only cost-effective but also applicable from acidic pH range to alkaline pH range widely, while single-coagulant are useful in limited pH range. Removal efficiency for using of the multi-coagulants appeared more efficient than that of single-coagulant. Especially, sulfates(alum-ferric sulfate : AFS & alum-magnesium sulfate : AMS) are more effective than chlorides (alum-ferric chloride : AFC & alum-magnesium chloride AMC). In comparison of residual turbidity related to settling time between alum and alum-ferric sulfate-magnesium sulfate(AFM), it took to 40 minutes using of alum but 5 minutes using of alum-ferric sulfate-magnesium sulfate(AFM) until constant residual turbidity are reached.

Reading a Postmodern Novel as Another History: Jessica Hagedorn’s Dogeaters

최성우 미래영어영문학회 2015 영어영문학 Vol.20 No.1

필리핀계 미국인 작가 제시카 하게돈의 『개를 먹는 사람들』은 필리핀 마르코스 독재 시절을 배경으로 하는 포스트모던 소설이다. 본 연구는 전형적인 포스트모던 특징을 보이는 이 소설을 미셸 푸코의 반기억(counter-memory)과 고고학, 계보학 등의 용어로 대표되는 역사 개념, 린다 허치언의 사료적 메타픽션(historiographic metafiction), 포스트모더니스트들의 역사 인식을 빌려 역사소설로 새롭게 읽어보려는 시도이다. 현실과 비현실이 뒤섞이고 무엇이 진실이고 거짓인지 확실히 드러나지 않는 소설을 통해 우리는 우리가 사실이라고 믿어온 역사의 불확실성과 비절대성, 그리고 단절성을 읽어낼 수 있다. 본 연구는 이 작품 분석을 통해 단지 필리핀 독재시절의 또 다른 역사의 재구성뿐만 아니라 이를 다른 문학작품 분석에 적용해 여러 아시아 국가들의 또 다른 현대 역사 읽기를 제안하고자 한다.

원형 탈모증 병변 내 백색 모발의 면역조직화학적 분석

최성우,김정원,김형옥,이종육,노도균 대한피부과학회 1999 대한피부과학회지 Vol.37 No.7

Background: There had been some reports of resistant white hair remaining in the alopecic patch area or regenerating white hair prior to emergence of black hair on the patients with alopecia areata. But relatively few studies pointed out this subject yet. Objective: The purpose of this study was to evaluate the histopathologic property of white and marginal hair follicles in alopecia areata patients using immunohistochemical markers. Methods: Eight patients with alopecia areata who had white hair on his scalp were selected, then obtained biopsy samples from white hair follicles, and marginal black hair follicles respectively. Immunohistochemical staining had been done with CD4, CD8, Mel-5, c-kit antibodies on both groups. Then, two different observers counted perifollicular infiltrated cells and the data scored with SAS program for statistical analysis. Results: The results were as follows 1. Decreased ratio of CD4 lymphocyte to CDS lymphocytes were observed on the white hair area (CD4: CD8=1.85: 1, 53.85%) (CD4: CD8=1.16: 1, 85.71%) but statistically not significant differences were seen and the ratio between them proved to be in the regeneration stage alopecia areata. 2. Significantly lower levels(P$lt;0.05) of Mel-5/c-kit positive ratio of melanocyte observed on white hair area(c-kit: Mel-5 = 3.84: 1, 26.01%) compared with marginal hair area(c-kit: Mel-5 = 1.74: 1, 57.33%), furthermore decreased ratio of Mel-5(+) cells(black: white = 2.17: 1, 46.14%), but increased ratio of c-kit (+) cells(black: white = 1: 1, 99.16%) were observed on the white hair area: more Mel-5(-), c-kit(+) cells(precursor melanocyte) were observed on the outer root sheath of white hair area. Conclusion: Consequently, we propose that the regenerating white hair area contained much more precursor type melanocytes and it is related to the whitish nature of regenerating hair.

반도체 Fab내 대기가능시간과 도착시간 정보가 존재하는 2단계 순열흐름공정구간의 총 흐름시간을 최소화 하는 최적화 일정계획

최성우,최성훈 한국경영과학회 2017 한국경영과학회 학술대회논문집 Vol.2017 No.4

포스타 전시 발표 : 소화기 ; 면역기능이 정상인 사람에서 하부 위장관 출혈로 발현한 거대세포 바이러스 감염에 의한 소장 궤양 1예

최성우,정준표,송영구,박영년,추적금,김동주,이정일,이창훈,이세준,이관식,이상인,손승국 대한내과학회 1999 대한내과학회 추계학술대회 Vol.57 No.-

대학에서의 학습공동체 활성화 방안 탐구

최성우 한국성인교육학회 2004 Andragogy Today : International Journal of Adult & Vol.7 No.2

The Korean public schools have faced with several problems due to the college entrance exam system, including abnormal features in the secondary school classrooms. Recently even the Korean colleges and universities have been called as ‘the preparatory schools for finding employment or national exams', contrary to their essential goals and proper functions. It may not be a wrong apprehension that these out-of-ordinary public education have resulted in the current conflicts, confrontations and discords swollen out from several fields of the Korean society. The paper suggests an application of the learning community programs for the Korean colleges as one of the strategies for carrying out their roles of educational systems to provide knowledge and foundation for lifelong learning. It introduces the concept and the characteristics of the learning community. It also analyzes the effectiveness of the learning community in the aspects of teachers as well as learners from the results of the case reports and experimental research. A majority of the learning community programs in the analyses reported the positive effects for both learners and teachers. According to the results of the analysis, three types of learning community programs were suggested to apply into the Korean college classrooms as following: team-taught, linked-courses, and team-project learning community. In conclusion, the paper discusses the expectations of these learning community programs, focusing on the students' contribution to the society by those who have experienced the programs during their college days. 최근 국내 대학은 대학입시제도의 잦은 변동과 학력평준화 및 중등학교교육 정상화를 표방한 일부 교육정책의 부실과 실패로 초래된 기초학력 미비 현상 등으로 전공교육은 물론 기초교양과목의 정상적 교육이 어려울 정도로 학생 교육에 어려움을 겪고 있다. 또한 사회 전반적인 구조에서 야기된 이공계 기피 혹은 인문사회분야의 교양과목 수강 기피, 대학의 고시학원화 등의 문제는 이런 상황을 더욱 어렵게 하고 있는 듯하다. 이 글에서는 대학이 졸업 후 취직을 위한 준비학원이 아닌 학문 연구 및 평생학습의 기초를 제공하여 건강한 사회구성원 양육을 위한 성인교육의 첫 번째 준비 장소라는 본연의 역할을 다할 수 있는 하나의 방안을 제시하고자 한다. 그것은 대학에서 학생들이 학습공동체(learning community)를 경험할 수 있도록 하자는 것이다. 기존의 내용교육(content)의 틀은 유지하면서, 학습공동체 프로그램을 통해 지속적으로 자기계발을 도모하는 평생학습자와 사회 및 국가의 공동의 목표를 원만하게 수행하는 사회구성원으로서의 핵심 역량을 배양할 수 있는 기회를 제공하자는 것이다. 이러한 목적을 위해, 먼저 학습공동체와 관련된 기존의 연구와 문헌을 이용해 학습공동체의 정의와 특성을 간략하게 소개하겠다. 다음으로 이러한 이론과 아이디어들이 실제 대학에서 활용된 사례나 경험들을 토대로 국내 대학에서 적용할 수 있는 구체적인 방안을 제시해 보겠다. 마지막으로 학습공동체의 활용을 통해 국내 대학의 강의실이 학습공동체 프로그램의 활용을 통해 좀 더 활기차게 변화하고, 이러한 학생들의 경험이 강의실 밖의 사회활동에서 실제 적용될 수 있는 기대효과를 논의하면서 글을 맺고자 한다.

NM 데이타의 실시간 온라인 수집기법 ( Real-Time Collection of On-line NM Data )

최성우,김성범 한국통신학회 1991 한국통신학회 학술대회논문집 Vol.10 No.3

수용성 미세분말 혼합을 통한 다공성 표면주름 제작 및 표면특성 분석

최성우,양정호,박상후 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.5