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조대철 순천향대학교 부설 산업기술연구소 2004 순천향 산업기술연구소논문집 Vol.10 No.2
This research is to investigate the solvent effect of soil flushing solutions in a dodecane-contaminated soil bed. Tween-80 (water-loving surfactant) and low carbon-numbered alcohols(co-solvents) were used as flushing agents. With butanol, the recovery efficiency reached up to 94%, which was the highest among our experiments. However, extended retention times lowered the removal efficiency probably due to formation of admicelles during the adsorption/desorption process.
담체 변화에 따른 Labscale 바이오 필터의 성능 실험
조대철,권성현 한국산학기술학회 2003 한국산학기술학회 학술대회 Vol.- No.-
The low-pH biofiltration system in laboratory experiments demonstrate defectiveperformance for treating H<sub>2</sub>S. When leachate pH was in the range of 1.5 tO₄. the biofilters in three different media removed H<sub>2</sub>S with efficiencies greater than 99% while it was treated as a single contaminant. The posibility of using a single-stage low pH biofilter depends on its performance in treating VOCs. During Phase 2. a single-stage biofilter was effective for treating mixtures of H<sub>2</sub>S and toluene with toluene concentrations below 20ppm and leachate pH between 2 and 3.5. Biofiltration of xylene was ineffective when pH was lower than 1.5. The treatment sysytem acclimated most slowly to benzene, and treatment of benzene was apparently subject to some competive inhibition from xylene and toluene. However, co-treatment was possible after some acclimation time. Xylene was not easily treated, with higher elimination capacities and no sign of competitive inhibition.
조대철 순천향대학교 부설 산업기술연구소 2004 순천향 산업기술연구소논문집 Vol.10 No.2
폴리우레탄 거품수지를 대기압 플라즈마와 표면 그라프팅 중합반응을 이용하여 표면개질하였다. 플라즈마 반응으로 폴리우레탄의 표면에 과산화기가 도입되었다. 또한 아크릴산의 그라프트 공중합을 통하여 카르복시기가 형성되었다. 이와 같이 개질된 폴리우에탄 시료를 일반 미생물 점착시헌에 사용하였다. 점착시험으로 표면 개질방법에 따른 미생물 점착성을 조사하였다. 그 결과 그라프트 공중합 개질한 시료의 점착성이 전혀 표면개질이 없었던 시료나 플라즈마 처리만 된 시료보다 약 3배이상 높게 분석되었다. 세균의 양은 주사전자현미경으로 측정하였다.
조대철 순천향대학교 부설 산업기술연구소 2004 순천향 산업기술연구소논문집 Vol.10 No.2
단백질 칩은 DNA칩에 이어 산업계와 환경 분야에서 보다 편리하고 신뢰도가 큰 분석 도구로 각광받고 있다. 특히 약학, 진단, 생화학 및 생물 산업에서 주요 현안이 되고 있는 항원-항체 반응, 단백질-단백질 작용, 단백질-소분자 작용의 분석기법에 혁신을 가져왔다. 또한 단백질 칩은 칩 개발과 연관된 표면화학 및 분자 검출 전략에 치중하고 있다. 본 고는 과거와 현재의 단백질 칩 연구를 개괄하고 향후 상용화 될 칩의 미래를 진단하고자 한다.
조대철,황정현,성주경,황성규,함인석,박연묵,변승열,김승래,Jo, Dae-Chuol,Hwang, Jeong-Hyun,Sung, Joo-Kyung,Hwang, Sung-Kyu,Hamm, In-Suk,Park, Yeun-Mook,Byun, Seung-Yul,Kim, Seung-Lae 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.12
Objectives : Gliomatosis cerebri is an uncommon primary brain tumor characterized by diffuse neoplastic proliferation of glial cells, with the preservation of the underlying cytoarchitecture. The aim of this study is to evaluate clinical features, outcome of surgical treatment and adjuvant therapy of gliomatosis cerebri. Methods : Between Jan. 1990 and Dec. 2000, 12 patients were diagnosed with gliomatosis cerebri based on characteristic radiological and histological findings. The patients' age ranged from 18 to 77(mean 44) years and the male to female ratio was 7 : 5. Nine patients underwent decompressive surgery and three, biopsy only. Postoperative radiation therapy was given in all cases except three. In addition to radiation therapy, four patients received chemotherapy. The mean duration of follow-up period was 18.8 months. Results : The most common presenting symptom were seizure and motor weakness. The mean duration of symptom was 5.9 months. There was 5 bilateral lesions and tumor involved corpus callosum in 5, basal ganglia-thalamus in 4, and brain stem in 2. There was no operative mortality but four patients died during the follow-up. The mean survival period for 11 patients was 20.5 months from the time of diagnosis. In univariate analysis, the lesion involving corpus callosum, basal ganglia-thalamus and brain stem correlated significantly with the short length of survival(p<0.05). Also, postoperative radiation as a adjuvant therapy prolonged the patient's survival(p<0.05). Conclusions : In the management of gliomatosis cerebri patients, early detection by MR imaging, active management of increased intracranial pressure, decompressive surgical removal and postoperative adjuvant therapy such as radiation is thought to be a good treatment modality.
조대철 순천향대학교 부설 산업기술연구소 2013 순천향 산업기술연구소논문집 Vol.19 No.1
Biofilm was successfully formed on activated carbon packed in a fluidized bed. Two different, fine activated carbon powders were tested in a continuous operation mode in order to decompose organic matter involved in a wastewater stream. Removal efficiencies of DOC (dissolved organic carbon) were higher in order of F-400, K-1 carbon. At 4.0 of HRT the performance of the reactor was the highest. Bacterial genus Pseudomonas, Alcaligenes, Acinetobacter were found in biofilm.
조대철 순천향대학교 부설 산업기술연구소 2016 순천향 산업기술연구소논문집 Vol.22 No.1
Competency is one of the hottest key word in recent education as well as work worlds. The concept needs be incorporated in school curriculum because graduates from school have to face “the competing society where the competency prevails.” This article has discussed how the competency works in every aspect of the educational sphere, what & how the curriculum should change, and the roles of the faculty in this transition age. In addition to the general education reformation, engineering discipline was stated as central theme.