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      • 조밀작용성을 가지는 변환군

        주진구,지종선,이동수 충남대학교 자연과학연구소 1978 學術硏究誌 Vol.5 No.2

        The dense action property in topological transformation groups is introduced in this paper. This is a special property of the topological phase group on the phase space in a given transformation group. Some relationships between transformation groups with the dense action property and homomorphisms are described. It is shown that every homomorphism of a transformation group (X, O(n)) onto (S^(n-1)-: O(n)) is open and every homomorphism of (X, SO (n)) onto (S^(n-1), SO (n)) is also open, n>1.

      • 肝吸蟲의 宿主血液 攝取에 관한 硏究

        朱東善,鄭啓憲,林漢鍾 고려대학교 의과대학 1982 고려대 의대 잡지 Vol.19 No.1

        The purpose of this study was to confirm whether Clonorchis sinensis has an activity of blood intake from host during the course of development of the fluke in the body of the host. The following results were observed: 1. The observations were made weekly on the appearance and the amount of contents with black materials in the cecal lumen of worms which were removed from the bile duct of the rats infected experimentally with metacercariae of C. sinensis. only Tow weeks after the infection, the black materials were already observed in the cecal lumen, and the amount of it was increased in examinations at the 3rd and 4th week of infections. By the 5th week, the majority of worms found to have full cecal contents with black materials. 2. The black materials in the lumen of the intestinal ceca of C. sinensis were proved by benzidine test to be the degenerated products of hemoglobin. 3. Electronmicroscopic examination of the cecal contents of C. sinensis revealed the presence of blood cells. The blood cells found in the contents were morphologically all the same to the blood cells of the host rabbits. 4. It was easier to identify the leucocytes in microscopic fields than the erythrocytes, because the leucocytes retained somewhat normal shape of it, while the erythrocytes were almost degenerated. In the cecal contents there were also rich debris which supposed to be components of blood cells. Nothing other the probable blood components was identified. 5. Scanning electronmicroscopic examination demonstrated that the oral sucker of C. sinensis has the opening and a lip is thick with many fine transverse striae or wrinkles on their surface. Many mammillary papillae were there close to the oral sucker. The results of this study confirmed the belied that C. sinensis has an activity of blood intake from the host with the oral sucker.

      • 만성요통환자에 있어서 근에너지기법과 치료마사지의 복합프로그램 적용 효과

        주동엽,김영빈,정동혁,이중철 圓光大學校 附設 體力科學硏究所 2007 體力科學硏究 Vol.29 No.-

        In order to compare and analyze major techniques employed by the college judo competitors of Korea who participated in the 43rd National Male and Female Judo Championships by Weight Class, the players in the light, middle and heavy weight classes were classified into 3 categories: (1) those who are taller than opponents(by +4 cm or more); (2) as tall as opponents(-3~+3 cm); and (3) smaller than opponents(by -4 cm or less). Scoring points and used techniques were examined from videotapes and matching records, which resulted in the following conclusions: 1. In case of light weight players who are taller than opponents, foot(34.73%) was used most frequently and effectively, followed significantly by hand(28.54%), pressing(15.35%), waist(15.31%) and pull-down(4.25%) sacrifice throw techniques(1.66%) in order(p<0.00l). Those who are as tall as opponents used foot techniques(34.88%) more effectively than hand although hand techniques(38.38%) were employed more frequently. For those who are smaller than opponents, hand techniques(35.03%) were used most frequently and effectively, followed significantly by foot(32.57%), waist(8.39%), pressing(16.12%) and pull-down sacrifice throw techniques(7.8%) sequence(p<.001). 2. In case of middle weight players who are taller than or as tall as opponents, foot(30.72%) was used most frequently and effectively, followed significantly by hand(35.42%), pressing(21.32%), waist(8.15%) pull-down sacrifice throw(0.42%) and cross lock(l.06%) in order(p<0.001). However, for those who are smaller than opponents, hand techniques were used more frequently and effectively than pressing, waist and cross lock

      • Glow放電法에 의한 α-Si蒸着裝置의 製作과 그 試料의 特性

        유동선,현옥배,고년규,황정남,정원모,이철주 연세대학교 자연과학연구소 1981 學術論文集 Vol.7 No.-

        Glow방전법에 의해서 SiH_4를 분해하여 α-Si 박막을 얻을수 있는 장치를 제작하였다. 이 SiH_4기체는 수소기체속에서 10%로 희석되였으며, 진공방전함속에서 rf 전압에 의하여 분해된 Si는 유리기판위에 증착된다. α-Si박막은 1~1.6 A˚/sec의 증착율로 약 7000 A˚의 두께까지 증착되였다. α-Si 박막의 흡수계수는, 2.3 eV의 photon energy 영역에서 약 10^4 cm^-1이고, 그 optical gap은 약 2.1 eV였다. 이 박막의 증착율은 전극간격에 따라 변하고 있으나, 최적전극간격과 기체유입량은 각각 2.6cm와 1~2cc/min였다. Apparatus capable of producing α-Si film by the glow discharge method was designed and constructed in this study. The monosilane gas which is diluted in H_2 gas to 10% is decomposed in the reaction chamber by rf oscillation. The apparatus is composed of a reaction chamber, a rf generator, a cooling system, etc. The α-Si thin film is produced at a deposition rate of 1~1.6 A˚/sec to a thickness of about 7000 A˚. Its absorption coefficient is about 10^4 cm^-1 in the photon energy region of ~2.3 eV, and its optical gap is about 2.1 eV. The deposition rate for the film is controlled by varying the distance between electrode and substrate. The optimum distance and gas flow is about 2.6 cm and 1~2 cc/min, respectively.

      • KCI등재

        집중강우에 대한 고탁도 응집불량 원수의 처리

        이동주,채선하 대한상하수도학회 2003 상하수도학회지 Vol.17 No.1

        The purpose of this study were to investigate the characteristics of lake water quality in the rains and to suggest optimal operating conditions of coagulation with jar-test. The raw water with high turbidity during the rainy season had law pH and ionic concentration and much of quarts, kaolinite. As a results, it is difficult to remove turbidity by coagulation. In conclusion, for the raw water during the rainy season, Increasing of pH and addition of lime was effective for removal of turbidity. The addition of bentonite prevents from charge reverse and greatly enhances the removal of turbidity.

      • 저질에 따른 꼬막(Tegillarca granosa)의 염분내성

        한경호,진동수,추은경,이우범,이원교 國立 麗水大學校 環境問題硏究所 2000 環境硏究論文集 Vol.3 No.-

        The present study was conducted to know the salinity tolerance of the bloody clam, Tegillarca granosa (Linnaeus) caught in Gang-jin Bay from May to June in 2000. In the experimental groups of sandy-mud, the survival and infiltration rate were not bad at 20~40ppt, but all the bloody clam, Tegillarca granosa died at more than 50ppt and less than 10ppt before the experiment finish. In the experimental groups of muddy, the survival and infiltration rate wrer not bad at 20~35ppt and then 40ppt, 45ppt. All the bloody clam, Tegillarca granosa died at more than 50ppt and less than 10ppt. The infiltration rate was high at 25~35ppt in the both of two experimental groups. In the sandy-mud, the bloody clam, Tegillarca granosa infiltrated less than half of their shells at 25ppt, 30ppt but in the muddy, they infiltrated more than half of their shells at 25ppt, 30ppt, 35ppt.

      • 慶北 漆谷郡 河濱池에서 採集한 淡水魚의 吸蟲類 被囊幼蟲의 奇生狀

        林宗燮,文柱煥,鄭東一,崔東翊 慶北大學校 醫科大學 1991 慶北醫大誌 Vol.32 No.3

        1990年 4月부터 同年 9月까지 慶北 漆谷郡 河濱池에서 淡水魚를 投綱, 낚시, 사발모지等으로 採集하여 吸蟲類 被囊幼蟲의 魚種別 寄生狀을 調査하였다. 河濱池에서 採集된 5種의 淡水魚에서 5種의 吸蟲類 被囊幼蟲을 同定하였던 바 몰개(Gnathopogon atromaculatus)에서는 5種의 吸蟲類 被囊幼蟲이, 참붕어(Pseudorasbora parva)에서는 3種의 被囊幼蟲이 檢出되었고, 강준치(Erythroculter erythropterus)와 납지리(Paracheilognathus rhombea)에서는 各各 1種의 被囊幼蟲이 檢出되었다. 붕어(Carassius carassius)에서는 吸蟲類 被囊幼蟲이 전혀 檢出되지 않았다. 肝吸蟲 被囊幼蟲의 寄生率과 寄生程度는 몰개에서 各各 58.9% 및 2.0個로 가장 높았으며, Metagonimus屬 被囊幼蟲은 몰개에서만 그 率 3.6%, 그 程度 1.0個로 檢出되었다. 그외의 3種의 吸蟲類 被囊幼蟲, Cyathocotyle orientalis, Metacercaria hasegawai, Pseudexorchis major는 各各 7.4個, 1.0個, 1.0個의 寄生程度를 나타내었다. 이번 調査로 慶北 漆谷郡 河濱池는 吸蟲類의 輕微한 浸潤池임과 河濱池에서 醫學的으로 重要한 淡水魚 宿主는 몰개였다. From April to September, 1990, fresh-water fish collected in Habin pond, Chilgok country, Kyungpook Province, were examined for the determination of the prevalence and intensity of infestation with digenetic larval trematodes. From 5 species of fresh-water fish collected, 5 species of metacercariae were identified. Gnathopogon atromaculatus, the korean shiner, was found to be infested by 5 species of the metacercariae whereas Pseudorasbora parva, the southern top-mouthed minnow, by 4 kinds. Erythroculter erythropterus, the white fish, and Paracheilognathus rhombea, the flat bitterling, were infested with 3 kinds of metacercariae. However, no digenetic larval trematode was demonstrated from Carassius carassius, the crusian carp. The rate and intensity of infestation with Clonorchis sinensis was the highest in G. atromaculatus, 58.9% and 3.4 cysts per gram of flesh, respectively. Metacercaria of Metagonimus species was detected from G. atromaculatus alone. The intensity of fish with the remaining 3 kinds of metacercariae, Cyathocotyle orientalis, Metacercaria hasegawai, and Metorchis orientalis, 7.4, 1.0 and 1.0 cyst per gram of the flesh, respectively. In the light of these results, it seemed likely that Habin pond might be enzootic focus of digenetic larval trematodes and G. atromaculatus might be a fish host of the greatest medical importance.

      • 慶北 永川郡 大勝池에서 採集한 淡水魚의 吸蟲類 肝吸蟲 被囊幼蟲 奇生狀의 變動

        李鎭植,文柱煥,鄭東一,崔東翊 慶北大學校 醫科大學 1991 慶北醫大誌 Vol.32 No.3

        1990年 4月부터 同年 9月까지 慶北 永川郡 大勝池(사근다리못)에서 採集되는 各種 淡水魚에서 肝吸蟲 被囊幼蟲의 寄生狀을 調査하여 1980年 同貯水池에서 調査한 成績과 比較한 바 採集魚種과 寄生狀의 差異를 觀察하였으므로 報告하는 바이다. 1980년 大勝池에서 採集된 魚種은 붕어(Carassius carassius), 강준치(Erythroculter erythropterus), 버들치(Moroco oxycepharus), 납지리(Paracheilognathus rhombea), 참붕어(Pseudorasbora parva), 참중고기(Sarcocheilichthys sinensis)의 6種이었으나 1990年에는 붕어, 파랑볼우럭(Lepomis macrorchirus), 참붕어의 3種만이 採集되었다. 1980年에 採集한 淡氷魚에서의 肝吸蟲 被囊幼蟲의 寄生率과 寄生程度는 강준치 25.0%, 5.4개, 납지리 13.0%, 0.5개, 참붕어 71.1%, 24.4개, 참중고기 46.7%, 5.8개였고, 1990年에는 참붕어에서만 25.0%, 7.7개로 檢出되었다. 以上의 成績으로 미루어 보아 大勝池는 지난 10年間 生態界가 變化하였고 그간에 移植된 파랑볼우럭이 生態界變化에 多少의 影響을 미친 것으로 생각된다. From April to September, 1990, fresh-water fish were collected in Daesong pond and examined for the presence of Clonorchis sinensis metacercaria in order to compare the infestation with C. sinensis metacercaria with that in 1980. Six species of fresh-water fish, Carassius carassius, the crusian carp, Erythroculter erythropterus, the white fish, Moroco oxycepharus, the fat minnow, Paracheilognathus rhombea, the flat bitterling, Pseudorasbora parva, the southern top-mouthed minnow, and Sarcocheilichthys sinensis, the oily shiner, had been collected in the pond in 1980. In 1990, however, only 3 species of fresh-water fish, C. carassius, P. parva and Lepomis macrorchirus, the blue gill, were collected. The rates and intensity of infestation with C. sinensis had been 71.1% and 24.4 cysts per gram of flesh in P. parva, followed by 46.7% and 5.8 in S. sinensis, 25.0% and 5.4 in E. erythropterus, 13.0% and 0.5 in P. rhombea in 1980. The metacercaria were demonstrated from P. parva alone, with the rate 27.3% and the intensity 7.7, in 1990. In the light of these results, it is likely that L. macrorchirus caused the ecosystem of the pond to be changed.

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