굴 養殖場의 環境衛生 및 統營灣의 汚染에 對한 硏究

崔渭卿,張東錫,李鐘甲,權在健 釜山水産大學校 1974 釜山水産大學 硏究報告 Vol.14 No.1

1973年 4月 부터 1974年 3月까지에 걸쳐 우리나라 南海岸 主요 굴 養殖場의 하나인 巨濟灣의 海水와 그 海域에서 養殖하느 굴에 對한 衛生指標細菌의 性狀과 汚染度를 알아 보고 一般 僞生物相을 把渥하고 또한 이 海域의 汚染源이 된다고 豫想되는 統營灣의 海水에 대한 衛生指標細菌의 性狀과 汚染度 그리고 一般 衛生物相을 究明함과 同時에 이들의 季節에 따른 遷移를 알고져 이 硏究를 실시하여 다음과 같은 結果를 얻었다. 1. 巨濟灣海水는 coliform group MPN의 median value가 <1.8- 8.6이었고, fecal coliorm MPN의 median value는 > 1.8- 5.7이었고, 生菌數는 3-34/ml였는데 汚染度는 여름이 겨울보다 훨씬 높았다. 2. 巨濟灣에서 養殖하고 있는 굴들은 coliform MPN의 median value가 88- 410, 最底<1.8에서 最高 16,000이었고, fecal coliform MPN의 median value가 >1.8- 45, 最底 18에서 最高 490이였으며, 生菌數는 median value가 290- 530, 最底 120에서 最高 36,000이였는데 汚染度는 여름이 겨울보다 훨씬 높았다. 3. 巨濟灣 全 station 海水의 pH는 8.10 前候로서 年中 큰 變化가 없고, 水溫은 1-2月이 最底 7℃, 7-8月이 最高로 26.5℃었고, salinity는 最底 31.54%로 7月이 낮고, 3月이 33.65%로서 가장 높았다. 4. 忠武灣의 汚染度는 coliform group MPN의 median value가 12- 2,200, 最底<1.8에서 最高 70이었고, fecal coliform MON은 median value가 4.5~1,700, 最低 4에서 最高 7,000이였으며, 生菌類의 median value가 23- 480, 最底 2에서 最高 4,200이였으며 여름이 겨울보다 汚染度가 높았다. 5. 潮夕別 汚染度는 底潮時의 coliform group MPN이 最高 1,800, 高潮時가 最高 240이었고, 底潮에서 高潮의 中間에는 最高 820, 高潮에서 底潮의 中間은 最高 1,600이였으며 底潮時가 高潮時보다 汚染度가 높았다. 6. 一般 衛生物은 모두 1,829 菌株를 分離하에 19層으로 同定하였다. 7. Vibrio parahaemolyticus와 Salmonella sp.는 忠武灣에서는 檢出되었으나 巨濟灣에서는 檢出되지 않았다. 8. Station과 station간의 오3染度는 巨濟灣의 경우 큰 差異가 없었는데 忠武灣의 station C-4(客船埠頭)는 他 station에 比해 훨씬 높았다. This study was conducted to investigate the contamination of sanitary indicative bacteria, and general microflora of the sea water and oysters of Geoje bay located at the southern coast of Korea, with respect to seasonal variation from April 1973 to March 1974. In addition, the sea water of Chungmu harbour adjacent to the Geoje bay hitherto considered as a contaminating source, was also examined at the same aspect as Geoje bay. The following results are obtained. In the sea of Geoje bay, the median value of coliform group MPN showed 1.8 to 8.6 and fecal coliform MPN was 1.8 to 5.7. Total plate counts amounted 3 to 34 per milliliter. The sea was much contaminated in summer than in winter. Oysters from the Geoje bay indicated 88 to 410 of median value in coliform MPN, maximum 16,000 and minimum 1.8 respectively. The fecal coliform MPN showed 18 to 45 in median value, 490 in maximum and 18 in minimum respectively. Total plate counts ranged 290 to 530 in median value, 36,000 in maximum and 120 in minimum respectively. Contamination of oysters was higher in summer than in winter. Throughout the Geoje bay sea, pH variation was almost negligible indicating the constant value of 8.10 with respect to season, however maximum water temperature indicated 26.5℃ during July to August while 7℃ of minimum temperature in January and February. Minimum salinity showed 31.54% in July and maximum was 33.65% in March. In Chungmu harbour coliform group MPN ranged 12 to 2,200 in median value, 70,000 in maximum and 1.8 in minimum. Fecal coliform MPN rested between 4.5 to 1,700 in median value, 4.000 in maximum and 4 in minimum. Total plate counts amounted to 23 to 480 in medi an value, 4,200 in maximum and 2 in minimum. The sea was more contaminated in summer than in winter. At low tide coliform MPN reached its maximum value of 1,800 while high tide had its maximum value of 240, however at the midtide from lowtide to high tide maximum value was 920 and at the midtide from high tide to low tide represented its maximum value of 1,600. Sea at low tide was more contaminated than at high tide. Total number of 1,829 strains of the general microflora were isolated and 19 genera were identified. Vibrio parahaemolyticus and Salmonella sp. Were detected in teh Chungmu harbour but not in the Geoje bay.

철근콘크리트 프레임면내 조적벽체의 내진성능 개선 기술 개발

申鍾學,河基柱,崔民權 慶一大學校 2002 論文集 Vol.18 No.-

Experimental programs were accomplished to improve and evaluate the structural performance of test specimens, such as the hysteretic behavior, the maximum horizontal strength, crack propagation, and ductility etc. Test variables are restraining factors of frame, with or without masonry infilled wall, and masonry method. Six reinforced concrete rigid frame and masonry infilled wall were tesed and constructed in one-third scale size under vertical and cyclic loads simultaneously. For masonry infilled wall with restraining factors of frame, maximum horizontal capacities were increased by 1.26∼2.24 times in comparision with that of rigid frame. For masonry infilled wall with restraining factors of frame(IFWB-1), cumulated energy dissipation capacities wear increased by 1.60 times in comparision with that of masonry infilled wall(IFB-1) at final stage of testing.

철근콘크리트 건물의 리모델링을 위한 보-기둥 접합부의 내진성능 개선기술

하기주,신종학,최민권,박효선,장우혁 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

In this study, experimental research was carried out to evaluate the earthquake-resistant performance of reinforced concrete beam-column joint using carbon fiber materials in existing reinforced concrete building. Test result shows that Retrofitting specimen (RPC-CP2, RPC-CR, RJC-CP, RJC-CR) designed by the improvement of earthquake-resistant performance and ductility using new materials(carbon fiber board, carbon fiber rod and carbon fiber sheet) could attained more load-carrying capacity and stable hysteretic behavior.

과학 실험·실습의 지도평가를 위한 모형과 도구개발

고재걸,민경덕,최종락,오대섭,권병규,변창진,여환진,정원우 경북대학교 과학교육연구소 1988 科學敎育硏究誌 Vol.12 No.-

The purpose of this study is to develop models and instruments for teaching and assessing scientific experiments and practices. General objectives for teaching and evaluating scientific experiments and practices in secondary schools were analyzed and categorized into three domains:they were inquiry skill, scientific thinking skill, and scientific attitude. The sub-categories for each domain were constructed, and specific objectives for each general objective were also stated in terms of behavioral objectives according to Mager's suggestion. The tables of specification (content×behavior) were developed in order to assist secondary school teachers to teach and evaluate scientific experiments in class. In addition, we introduced some useful assessment techniques which can be adopted to evaluating learning outcomes of each specific objective. The sample test items corresponding to each objective were listed for practical usage in class.

B형 간염 바이러스 단백질에 있어서 HLA-A2에 의해 표현되는 Epitope 펩타이드 들의 분석

이희구,임종석,김승목,이기영,김희수,김승호,권태종,최인성,정태화,김길현 梨花女子大學校 藥學硏究所 1995 藥學硏究論文集 Vol.- No.5

The cytotoxic T lymphocyte (CTL) are an important component in host defense mechanism against viral infection. They can recongnize virus-derived peptides presented by the Class I MHC molecule at the cell surface of the infected cells. On searching for effective CTL epitopes of hepatitis B virus(HBV), we synthesized a distinct set of 9-10 mer peptide containing amino acid sequence of hepatitis B virus surface protein that are selected on the basis of a computer modeling and the previously described HLA-A2 specific motifs.Binding assay of the synthetic peptides to HLA-A2 molecules using human antigen processing defectant T2 cells showed that 3 out of 4 synthetic peptides enhanced the expression of HLA-A2 molecule on T2 cell surface.Two anchor positions, namely P2 and P9(or P10) appeared to play a decisive role for binding.Structural. characteristics of the peptides addressed by molecular dynamics simulation was analysed and compared.These peptides also partially triggered CTL isolated from human peripheral blood mononuclear cells of HBV positive patients, and the response was peptide-spcific.These results showed that negatively-charged amino acid residue at P2 hampered binding affinity of the peptides to HLA-A2 molecules, and that binding affinity of the peptides are not always reflected by their immunogenicity among natural T cell repertoire.

B형 간염 바이러스 단백질에 있어서 HLA-A2에 의해 표현되는 Epitope 펩타이드 들의 분석

이희구,임종석,김승목,이기영,김희수,김승호,권태종,최인성,정태화,김길현 이화여자대학교 생명과학연구소 1995 생명과학연구논문집 Vol.6 No.-

The cytotoxic T lymphocyte(CTL) are an important component in host defense mechanism against viral infection. They can recongnize virus-derived peptides presented by the ClassⅠ MHC molecule at the cell surface of the infected cells. On searching for effective CTL epitopes of hepatitis B virus(HBV), we synthesized a distinct set of 9-10 mer peptide containing amino acid sequence of hepatitis B virus surface proteion that are selected on the basis of a computer modeling and the previously described HLA-A2 specific motifs. Binding assay of the synthetic peptides to HLA-A2 molecules using human antigen processing defectantn T2 cells showed what 3 out of 4 synthetic peptides enhaced the expression of HLA-A2 molemule on T2 cell surface. Two anchor positions, namely P2 and P9(or P10) appeared to play a decisive role for binding. Structural chacteristics of the peptides addressed by molecular dynamics simulation was analysed and compared. These peptides also parially triggerd CTL isolatied frmo human peripheral blood mononuclear cells of HBV positive patients, and the response was peptide-specific. These results showed that negatively-charged amino acid residue at P2 hampered binding affinity of the peptides to HLA-A2 molecules, and that binding affinity of the peptides are not always reflected by thier immunogenicity among natural T cell repertoire.

한국 전통간장 제조시 맥아첨가방법이 간장의 성분과 식미에 미치는 영향

최광수 ( Choe Gwang Su ),권광일 ( Kwon Gwang Il ),이종구 ( Lee Jong Gu ),이륜경 ( Lee Lyun Gyeong ),최종동 ( Choe Jong Dong ),유문균 ( Yu Mun Gyun ),임무혁 ( Im Mu Hyeog ),김기주 ( Kim Gi Ju ),홍영표 ( Hong Yeong Pyo ),안영순 ( An 한국응용생명화학회 2003 Applied Biological Chemistry (Appl Biol Chem) Vol.46 No.3

Methods of adding barley malt as source of carbohydrates and enzymes in the production of kanjang in order to improve it`s tastes and qualities were investigated. Soybean meju, soybean-malt meju and soybean meju cum malt wat mashed with 20% salt brine in the ratio of 1 : 3 respectively, matured and analyzed the chemical compositions of the soy sauce mash samples for 150 days of maturing. Organoleptic evaluations for the matured soy sauce samples were done. The higher total nitrogen. TCA soluble nitrogen, O.D. at 500 nm, pure extract and lactic acid content could be observed with the toy sauce mash made of soybean-malt meju than those of contrail one from the beginning of the mashing throughout to the whole maturing period of 150 days. The higher the content of malt in the soybean-malt meju, the higher those content in the mash. But the lower content of those compositions in the soy sauce mash made of soybean meju cum malt than those in the contrast was found. The highest scores in all the sensory characteristics including 7.56 points, which were significantly different from that of contrast soy sauce 5% level, in overall palatability were obtained by the soy sauce made of soybean-malt meju added with 30% malt in the organoleptic evaluations.

가시광 LED와 WO₃/g-C₃N₄를 이용한 Rh B 제거

한치헌(Chee-Hun Han),최용주(Yongju Choi),CHOE JONG KWON(Jong Kwon Choe) 대한환경공학회 2022 대한환경공학회 학술발표논문집 Vol.2022 No.11

Study on Plasma Performance of Piezo-Ceramic using Ignition Oscillator Copied Device for Gasoline Engine

Kwon-Se Kim,Hong-ju Kim,Mun-seok Choe,Doo-seuk Choi,Jong-young Ahn,Byung-wook Kwon,Sang-duck Kim 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11

CURRENT STATUS OF NUCLEAR FUSION ENERGY RESEARCH IN KOREA

Kwon, My-Eun,Bae, Young-Soon,Cho, Seung-Yon,Choe, Won-Ho,Hong, Bong-Geun,Hwang, Yong-Seok,Kim, Jin-Yong,Kim, Kee-Man,Kim, Yaung-Soo,Kwak, Jong-Gu,Lee, Hyeon-Gon,Lee, San-Gil,Na, Yong-Su,Oh, Byung-Hoon Korean Nuclear Society 2009 Nuclear Engineering and Technology Vol.41 No.4

The history of nuclear fusion research in Korea is rather short compared to that of advanced countries. However, since the mid-1990s, at which time the construction of KSTAR was about to commence, fusion research in Korea has been actively carried out in a wide range of areas, from basic plasma physics to fusion reactor design. The flourishing of fusion research partly owes to the fact that industrial technologies in Korea including those related to the nuclear field have been fully matured, with their quality being highly ranked in the world. Successive pivotal programs such as KSTAR and ITER have provided diverse opportunities to address new scientific and technological problems in fusion as well as to draw young researchers into related fields. The frame of the Korean nuclear fusion program is now changing from a small laboratory scale to a large national agenda. Coordinated strategies from different views and a holistic approach are necessary in order to achieve optimal efficiency and effectiveness. Upon this background, the present paper reflects upon the road taken to arrive at this point and looks ahead at the coming future in nuclear fusion research activities in Korea.