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.

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.

광합성 세균에 대한 연구 : II. 야생형 Rhodos pirillum rubrum에 의한 수용성 색소의 생산

오덕철,이현순 제주대학교 1984 논문집 Vol.17 No.-

1. Korean strain of wild type of Rhodospirillum rubrum excretes water-soluble pigments into the medium when grown anaerobically under light. 2. The absorption spectrum of the supernatant medium shows peaks at 392.5 (main peak), 500,535 mp together with shoulders at 370, 555 mp. 3. Water-soluble pigments show pinkish-orange fluorescence under short-wave ultraviolet light. 4. The optical density of the supernatant medium increases markedly with time when aerated under dark, room temperature. 5. The culture of R. rubrum shows no distinct differences in the excretion of water-soluble pigments when cultured in orthophosphate or pyrophosphate medium as inorganic phosphate source. 6. It is postulated that the water-soluble pigments excreted by the wild type of R rubrum are mixture of a few kinds of porphyrins.

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%).

동계 제주항의 미생물학적 수질오염에 관한 연구

오덕철,김재하 제주대학교 해양연구소 1980 해양자원연구소연구보고 Vol.4 No.-

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 1980 at sic sites in Jeju Harbor. The sampling was done from 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 I 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 coliform 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.

한국산 rhodopseudomonas sp.의 분리 및 동정

오덕철,이현순 한국미생물학회 1975 미생물학회지 Vol.13 No.1

this work was designed to study the species belonging to Family Rhodospirillaceae in Korea. The species of Rhodopseudomonas palustris and R. gelatinosa were isolated and identified. The utilization of various substrates such as malate, succinate, citrate, pyruvate, propionate and acetate were tested with isolated KS 007 and KS o16. Though there were some differences according to nitrogen source in media it was thought that he intermediates of TCA cycle were comparatively good substrates, Also it was confirmed that isolated strains have the ability of nitrogen fixation.

제주도산 민주름버섯목 (균류상)

오덕철,이지열,양석철 한국균학회 1987 韓國菌學會誌 Vol.15 No.3

About 350 samples of mushrooms were collected in Mt. Halla of Cheju Island from March to December of 1986. 45 species of Aphyllophorales were identified and included in 7 families and 26 genera. Among them, Inonotus nodulosus and Daedaleopsis purpurea were recognized as unrecorded species in Korea. Characteristics of these two species were described and Korean names were designated.

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.

제주도 버섯자원의 다양성

오덕철 한국육종학회 2005 한국육종학회 학술발표회 발표요지 Vol.37 No.1

제주도산의 버섯 : 1. 제주도산의 기록종 버섯 1. The Recorded Mushrooms in Cheju - do

오덕철 한국균학회 1992 韓國菌學會誌 Vol.20 No.4

Recorded mushrooms in Cheju-do, Korea are composed of 1 division, 2 subdivisions, 4 classes, 3 subclasses, 14 orders, 41 families, 96 genera and 186 species. Because of dual recording of synonyms of 5 genera and 16 species, the numbers of genera and species in the list are 101 and 202 respectively.