제주시 (濟州市) 일원 4개호 해수의 분변성 오염세균의 분포

오덕철 ( Duck Chul Oh ) 한국하천호수학회 1978 생태와 환경 Vol.11 No.3·4

The present study was performed from August November 1978 to investigate the degree of the bacterial pollution at 4 sites sea water around Jeju city: Dongbudu, Seobudu, Yongyeon and Yongduam. Total coliforms (TC), fecal coliforms (FC), and Total Bacteria (TB) were examined together with the measurement of pH and water temperature. pH values ranged from 7.1 to 8.4 at all sites. The TC levels at Yongduam were 130∼350/100 ml which showed the lowest value among all sites, 1403∼3,500/100ml at Seobudu, 1,600-over 24,000/100ml at Yongyeon and over 2.4x 10^6/100ml at Dongbudu which showed the highest value. The FC levels at Yongduam were 49∼240/100ml, 70∼1,400/100mI at Seobudu, 280∼2,400/100ml at Yongyeon and the highest values were 3.5X10³∼1.4X10^6/100ml at Dongbudu also. FC:TC ratios were 21∼68% at Yongduam, 10∼34% at Yongyeon, I4∼58% at Dongbudu and 22∼58% at Seobudu. According to the criteria in America, the water quality of Yongduam is comparatively good sea water in both considerations of the TC and FC levels. The sea water of Yongyeon has over those values, so it is considered that posibility of the occurrence of Salmonella is much. The FC levels at Seobudu has also the posibility of containing Salmonella. The degree of the bacterial pollution at Dongbudu is very high. This means that there are severe inflow of fecal sewege from Sanji-brook and other sewers to Dongbudu sea water.

서귀포시내 주요 하천의 수질에 관한 조사

오덕철,최영찬,고용구 ( Duck Chul Oh,Young Chan Choi,Yong Ku Ko ) 한국하천호수학회 1992 생태와 환경 Vol.25 No.1

The Physical, chemical and bacteriological investigations on the three sites of each two streams, Yeonhee-chun and Donghong-chun which are the sources of two waterfalls, Chonjiyon-Fall and Chongbang-Fall respectively in Seogwipo City, Korea, were carried out monthly from October 1990 to Septermber 1991. The ranges of DO, BOD, SS and SiO_2-Si concentration of Yeonhee-chun were 6.61∼12.82mg/l, 0.1∼4.5mg/l, 0.10∼17.10mg/l and 5.11∼16.22 mg/l respectively, and those of Donghong-chun were 5.30∼11.92mg/l, 0.4∼17.2mg/l, 0.51∼48.67mg/l and 5.16∼14.80mg/l respectively. The result of bacterial investigations for the pollution indicator bacteria such as total coliforms, fecal coliforms, fecal streptococci and others showed that the bacterial quality of Yeonhee-chun was somewhat better than that of Donghong-chun. The MPNs of total coliforms of Yeonhee-chun and Donghong-chun were 750-24×10^4/100 ml and 1100-24×10^5/100 ml respectively, and those of fecal coliforms were 23-24x10^3/100 ml and 9-24×10^5/100 ml respectively. The numbers of fecal streptococci of Yeonhee-chun and Donghong-chun were 2-1,324/10 ml and 3-13,233/10 ml respectively.

광합성 세균의 Cytochrome bc_(1)Complex를 실험주제로 한 생물실험교육의 모형화

오덕철 濟州大學校 師範大學 科學敎育硏究所 1988 科學敎育 Vol.5 No.-

The purpose of this research is the designing a model of the biology experiment which can apply to a student, who will be a biology teacher of the secondary school, of the biology education major at university. A model was extracted from the experimental procedure of the isolation, purification and characterization of cytochrome bc_(1) complex which is a membrane protein complex and a part of the electron transport system of the respiratory and photosynthetic systems of the photosynthetic bacteria. The various discusstion processes between the supervisor and student(s) were arranged in each experimental step for the achievement of the satisfactory experimental purpoose. And the criteria which can also include other fields of the basic natural sciences other than biological science were suggested for each step. A multipurpose educational model for biology experiment was suggested by the connection of the discussion processes with the establishment criteria.

冬李 濟州港의 徵生物學的 水質汚染에 關한 硏究

吳德鐵,金在河 濟州大學 海洋資源硏究所 1980 해양과환경연구소 연구논문집 Vol.4 No.-

1979年 12月부터 1980年 1月까지 濟州港域의 6個所 海水를 採水하여 水層別로 Total Coliform(TC ), Fecal Coliform(FC) 및 General Bacteria (GB) 를 調査하고 pH, 水溫, 氣溫등도 함께 側定하였다. 水溫은 平均 15∼16.75℃ 였으며 陸水의 流入이 많은 곳은 表面數가 深層水보다 낮았다. pH는 陸水의 流入이 가장 많은 Site 4가 가장 낮아서 平均 7.83이였고 Site 1이 平均 8.33으로 가장 높았으며 全體的으로 全期間동안 7.7∼8.6 사이였다. TC, FC 數는 Site 4가 가장많아 100ml當 各各 86,166, 9,208이고 GB는 ml 當 52,496 個體였으며, 가장 낮은 쪽은 Site 1로서 各各 100ml當 245,81 및 ml당 425 個體였다. 水層別로는 採水場所에 따른 差異는 있으나 모든 곳이 다 表層이 越等히 많았다. FC와 TC 比率은 全般的으로 4.46에서 37.9% 사이였다. 調査된 資料를 分析할때 多量의 奮便性 細菌이 濟州市 下水를 通하여 濟州港으로 流入되고 있음이 나타났고, Salmonella 등 病原性 細菌의 存在가 예상되어 下水의 處理가 要望된다. Distribution of total coliform bacteria (T. C), fecal coliform bacteria ( F C ) and general bacteria ( G. B) together with pH, water temperature and air temperature were surveyed periodically from December 1979 to January 1980 at six sites in Jeju Harbor. The sampling was done form both surface and bottom level for each sites. The average water temperature throughout the period of investigation was 15℃∼16.75 ℃. It was indicated that at the estuary where a large amount of inland water is flowing in, the temperature of surface water showed lower than bottom layer. The lowest and the highest pH showed at site 4 and site 1 whose value were 7.83 and 8.33 respectively. Overall pH value throughout the investigation period was between 7.7 and 8.6. The highest viable counts of TC, FC and GB were observed on site 4 with 86, 166/100ml, 9,208/100ml and 52,496/ml respectively, while the lowest counts were on site 1 with 245/100ml, 81/100ml and 425/ml respectively. Differences in counts between surface and bottom were not much agreeable throughout the tested sites, but surface levels were remarkably higher than bottom for every sites. The ratio of Fecal colifom to Total coliform (Fc:Tc) were ranged from 4.46 % to 37. 9 %. Reviewing the data obtained in this investigation, it is obvious that a large amount of fecal bacteria are flowing into Jeju harbor through untreated city sewage. Therefore, it is desirable to set up sewage disposal facilities in order to prevent serious pollution problems with pathogenic bacteria such as Salmonella, Vibrio etc.

외국 대학의 과학교육에 대한 박사 학위 논문 분석 연구

오덕철,김규용 한국과학교육학회 1990 한국과학교육학회지 Vol.10 No.1

The results of the analyses of 431 doctoral disserations of science education (Dissertation Abstracts International, 1980-1984) are as follows; 1. It was recognized that many countries as well as USA (e.g. Canada Nigeria, Saudi Arabia, South Africa, Taiwan, Thailand, The Netherlands etc.) have deep interest in science education. 2. About 60% of dissertations had been focused on middle school (junior and senior) and college students as the subject of investigation. 3. Disciplines of science concerning the subject showed general science (35.6%), biology (18.3%), physics (11.4%), chemistry (11.4%), earth science (4.6%), and others (18.7%). 4. The number of dissertations belonging to experimental research was over 60 more than that of dissertations belonging to theoretical research. 5. In methodology of research, examination, test, questionaire were general method and the field of research was focused mainly on the academic achievement.

제주시 지역 삼개 하천의 세균학적 오염에 관한 연구

오덕철 제주대학교 해양연구소 1981 해양자원연구소연구보고 Vol.5 No.-

From June 1980 to February 1981, the degrees of bacterial pollution of the three brooks (streams) which flow through Jeju City, and the fresh water inflow to the sea were investigated. Studied items were air temperature, water temperature, pH, General Bacteria(GB), Total Coliform (TC), Fecal Coliform(FC) and Fecal Streptococci(FS). 1. Water Temperature: 11~17.5℃(average, 14.3℃) at Sanji Brook, 4~31℃(average, 15.8℃) at Byeong-mun Brook and it was 7~28℃(average, 16.9℃) at Han Brook. 2. pH: 6.5~7.l(average, 6.7) at Sanji Brook, 6.6~7.3(average, 6.9) at Byeongmun Brook and 6.5~7.2(average, 6.8) at Han Brook. 3. GB Density: 230,000-14,150,000/mI at Sanji Brook, 350,000-16,600,000/ml at Byeongmun Brook and 400,000~17,850,000/ml at Han Brook. GB Density was high in summer season(Ju1. -Oct. ) and low in winter season(Nov. -Feb.) 4. TC Index : 49×10^(4)~16×10^(6)/100ml at Sanji Brook, 23×10^(4)-35×10^(5)/100ml at Byeongmun Brook and 33×10^(4)-35×10^(5)/l00ml at Han Brook. Average value at Sanji Brook was most high and the index of summer season (Jun. -Oct. ) was higher than that of winter season. 5. FC Index: The average index at Sanji Brook was 349×10^(4)/l00mI, at Han Brook was 14×10^(6)/100ml and at Byeongmun Brook was 72×10^(3)/100ml. The highest index was 92×10^(5)/100ml in October at Sanji Brook. The lowest one was 13×10^(4)/100ml in February at Byeongmun Brook. Considering these indexes, the possibility of presence of Salmonella is high. 6. FS Density: The average value at Sanji Brook was 11,256/m1, 6,897/m1 at Byeongmun Brook and 6,348/ml at Han Brook. The highest value was 30,250/ml in October at Byeongmun Brock and the lowest one was 850/ml in June at same Brook. 7. The Ratio of FC/TC: 0.32-1(average, 0.62) at Sanji Brook, 0. 2-l(average, 0.5) at Byeongmun Brook and 0.37-l(average, 0.76) at Han Brook.

새마을운동을 통한 料食業所의 衛生改善에 대한 연구 : 生鮮膾類의 細菌學的 汚染을 中心으로

吳德鐵,李祺完,金承浩 濟州大學校 새마을硏究所 1986 새마을硏究論文集 Vol.3 No.-

겨울철 홍천강의 위생학적 수질조사연구

오덕철,김선균,주왕기,조동현,김우호,윤경민 江原大學校附設體力硏究所 1976 江原大學校附設體育科學硏究所論文集 Vol.- No.1

The water quality of the Hong-Cheon river was investigated during the winter season. The rate of contamination of the low tide was a little more than the high tide. But all values of the analyzed-items were similar to those in the clear water.

미국대학을 중심으로한 과학교육분야 박사학위 논문분석

오덕철,김규용,박규은 한국과학교육학회 1991 한국과학교육학회지 Vol.11 No.1

The condensed results of the analytical study on 361 doctoral dissertations in science education recorded in Dissertation Abstracts International during the years of 1985-1989 are as follows: About eighty to hundred dissertations were produced annually, but a slight decline in number was noted currently. About 94.4% of dissertations were produced by the universities in the USA The research data of 361 dissertations were collected from 25 countries. Over 40% of total dissertations had been focused on high school(senior middle school) and college students as the source of research. Disciplines of science constituting the background of dissertations were biology(19.1%), physics(12.7%), chemistry(12.0%) and earth science(2.5%). Concerning the research branches, the number of dissertations belonging to complex research(composed of experimental and theoretical research) was 118(32.7%) and those belonging to experimental and theoretical research were 88(24.4%) and 74(20.5%) respectively. Also that belonging to computer-aided research was 45(12.5%). The general methods of data collection were examination & test(34.9%), questionaire(22.2%) and complex method (19.1%) . The main areas of dissertations were academic achievement(31.8%), teaching assessment(20.2%) and pedagogy(18.8%).

光合成 細菌에 대한 硏究 : Ⅰ.Rhodospirillum rubrum의 Polyphosphate 生合性에 있어서 燐散源에 따른 差異 Ⅰ. The Differences on Polyphosphate Biosynthesis by the Phosphate Source in Rhodospirillum rubrum

吳德鐵,李賢順 제주대학교 1983 논문집 Vol.16 No.-

1. 光合成細菌 R. rubrum을 Ortho P, Pyro P가 各各 包含된 培地로 明ㆍ暗狀態로 培養하여 收率, pH變化, Polyphosphate含量등을 조사하였다. 2. pH는 Ortho P배지보다 Pyro P배지에서 더 높았다. 3. 收率은 明培養때는 Ortho P배지에서가 낮고 暗培養인때는 反對였다. 4. Poly P함량은 明ㆍ暗區別 없이 Pyro P배지에서 월등히 높았다. 5. 암배양의 경우 Ortho P배지에서 배양할 때 상당량의 Pyro P가 生合成되는 것으로 보인다. 6. Pyro P는 어떤 經路이건 직접 long chain Poly P合成에 관여되는 것으로 보인다. 1. Photosynthetic Bacterium R. rubrum was cultured in Orthophosphate or Pyrophosphate-containing medium under light or dark condition. Cell Yeild, pH Change, Polyphosphate content were investigated. 2. pH of Orthophosphate medium was low than Pyrophosphate medium. 3. Cell Yield was low with Orthophosphate medium under light, but was low with Pyrophosphate medium in case of dark culture. 4. Polyphosphate content was always very high with Pyrophosphate medium. 5. It looks likely that under dark culture with Orthophosphate medium R. rubrum synthesize Pyrophosphate with substantial amounts. 6. It seems that Pyrophosphate concern directly in biosynthesis of long chain Polyphosphate.