긴 풍선도자를 이용한 경피적 관동맥 확장술의 임상적 경험

류문희,류제영,배 열,조인종,서정평,길광채,박주형,정명호,조정관 박종춘 대한순환기학회 1995 Korean Circulation Journal Vol.25 No.6

THE INSTITUTE OF NATURAL SCIENCES KUNSAN NATIONAL UNIVERSITY

Ryu,Moon-Hee,Choi,Moon-Sul 群山大學校自然科學硏究所 1986 自然科學硏究 Vol.1 No.-

속도 방정식 즉 Schlogl Model Ⅰ, Ⅱ를 만족하는 변수에 대한 Fokker-planck 방정식의 근사해인 확률분포함수를 구하였고 그 결과를 Suzuki가 제안한 방법과 비교 설명하였다.

Application ot the Nonlinear System of Star Diagram

최문술,류문희 군산대학교 1989 論文集 Vol.16 No.-

속도방정식인 Schlogl model에 대한 retarded n-point 함수를 명확하게 나타내었다.어떤 면에서는 이러한 방법을 다른 비선형계에 정확한 형태로 적용할 수 있다. The retarded n-point function of a Schl□gl model which is rate expression is represented explicitly.In some cases this method allows one to apply to the other nonlinear system in explicit form.

Polarizability Tensors

Kim,Eun-Soo,Ryu,Moon-Hee 群山大學校 1985 論文集 Vol.11 No.-

제2차 및 제3차 분자편극밀도텐서가 retarded Green function에 의해서 구해진다. 이러한 방법으로 텐서에 대해 보통 사용하는 섭동방법보다 더 일반적인 결과를 얻을 수 있다. retarded Green function의 방법으로 텐서의 대칭성을 매우 효율적으로 논할 수 있다.

Chitin 및 Chitosan이 생체내 카드뮴 축적에 미치는 영향 -Chitin, Chitosan 및 Dithiocarbamate Chitosan이 흰쥐 간내 카드뮴 축적에 미치는 영향-

유일수,류문희,이종섭 한국환경보건학회 1998 한국환경보건학회지 Vol.24 No.2

When rats are exposed to cadmium in their diet, the cadmium accumulates in the liver. This study was carried out to investigate the effect of chitin, chitosan and dithiocarbamate chitosan on the cadmium accumulation in liver of rats. For this experiment, 10 male Sprague-Dawley were used. The experimental groups were divided into four independent groups which were one control group and three experimental groups by cadmium alone treatment or chitin, chitosan and dithiocarbamate chitosan with cadmium. In order to investigate the eliminative effect of chitin, chitosan and dithiocarbamate chitosan on the cadmium accumulation in liver of rats, the cadmium concentration, the metallothionein level and the enzyme activitys were measured. The results obtained revealed the eliminative effect of cadmium in liver of rats by chitin, chitosan and dithiocarbamate chitosan. The effect of chitin on the cadmium elimination was less than that of chitosan and dithiocarbamate chitosan. Also it shows that the eliminative effect of cadmium by dithiocarbamate chitosan was the highest.

扶土灣의 環境과 資原生物學的 硏究

金重來,柳文熙,鄭義泳,崔文術 群山大學校自然科學硏究所 1986 自然科學硏究 Vol.1 No.-

扶土灣의 海洋還境 및 生物棲息環境을 비롯하여 植物플랑크톤, 主要水産動物의 生殖生態, 個體群成長, 害敵生物에 의한 白蛤의 斃死, 貝類의 資源量, 主要水産動物의 漁獲量, 그리고 有用海藻類의 生産에 關한 調査硏究 結果를 要約하면 다음과 같다. 1. 榮養鹽으로서 ??-N, ??-N, T-N과 ??-P는 陸水의 영향을 받는 곳에서 0.028∼0.046, 0.0011∼0.0023, 0.038∼0.049와 0.025∼0.035 mg/ℓ로 比較的 높았으나 陸水의 영향을 덜 받는 곳에서 각각 0.026∼0.031, 0.0005∼0.0017, 0.033∼0.043과 0.019mg/ℓ로 비교적 낮았다. 內灣으로 들어올수록 COD는 증가하며, 투명도는 감소하는 것으로 調査되었다. 2. 식물플랑크톤은 매번 1종 내지 3종이 크게 우점하였으며, 6월, 8월, 10월에 가장 큰 우점을 보인 種은 각기 Leptocylindrus danicus, Chaetoceros pseudocurvisetus 및 Chaetoceros rostratus였다. 여타의 해양생태학적 환경에 비하여, 조간대의 식물플랑크톤 군집은 계절변화나 종조성에 있어, 뚜렷한 차이가 있는 것으로 나타났다. 3. 백합, Meretrix lusoria, 바지락, Ruditapes philippinarum 그리고 가무락, Cyclina sinensis는 雌雄異體로서 卵生이다. 4. 백합과 바지락의 生殖周期는 5段階(分裂增殖期, 成長期, 成熟期, 放出期, 그리고 退化 및 休止期)로 區分할 수 있었으며, 가무락은 6段階(分裂增殖期, 成長期, 成熟期, 放出期, 退化期 그리고 回復期)로 區分할 수 있었다. 5. 백합의 産卵은 5月에서 10月까지 일어나며, 産卵盛期는 6月에서 7月이다. 그리고 이들 個體群의 群成熟度는 암, 수 殼長이 35∼40mm인 個體는 50% 以上이었고 殼長이 50∼60mm인 個體는 100%로 全個體가 再生産에 참여하였다. 6. 바지락의 産卵은 5月에서 9月까지 일어나며 7, 8月이 産卵盛期이다. 그리고 이들 個體群의 群成熟度(生物學的 最少成熟個體)가 50% 以上인 個體의 殼長은 20∼25mm이었고 全個體가 再生産에 참여하여 群成熟度 100%가 되는 個體들의 殼長의 크기는 35∼40mm 이었다. 7. 가무락의 産卵은 7月에서 9月까지 일어나며 7, 8月이 主産卵期이다. 8. Von Bertalanffy의 방정식에 의한 殼長과 全重量에 對한 成長曲線은 다음과 같다. 1) 백합 : ??, ?? 2) 바지락 : ??, ?? 3) 가무락 : ??, ?? 9. 穿孔腹足類인 큰구슬우렁, Neverita didyma에 依한 白蛤의 穿孔의 位置는 다양하나 大部分은 比較的 一定한 位置인 殼頂部位에 있었다. 그리고 구멍의 內徑과 外徑의 크기는 貝類의 殼長에 비례하였다. 10. 큰구슬우렁, N. didyma의 포식율은 實驗室內에 調査한 結果 주간보다 야간에 더 컸고, 큰구슬우렁 1마리가 하루에 평균 0.2個體(殼長 20mm 以上)를 穿孔하여 포식하였다. 11. 扶土灣內의 年間 生産可能量은 白蛤이 ??, 가무락 ?? 그리고 바지락 ??으로 推定된다. 12. 김 生産量과 氣象要因과의 관계는 매우 密接하며 특히 養殖期間中의 적당한 風波는 김 生産에 크게 效果的이다. 13. 김의 年間生産量은 乾海苔로 約 439,500束으로 推定된다. 14. 主要水産動物(貝類除外)의 年間漁獲量은 約 38,430kg이며 이 中 魚類가 13種에 30,740.5 kg으로서 約 80%를 占有하고 單一魚種으로는 학공치가 으뜸으로 30.5%를 차지한다. Environmental and resources biological studies were performed aiming to the preservation of the resources biota in Pusa Bay from April to November 1986. 1. The nutrient concentrations of ??-N, ??-N, T-N and ??-P in inquiry area affected by the inflowing inland water were 0.028-0.046, 0.0011-0.0023, 0.038-0.049 and 0.025-0.035 (mg/1), respectively. However in the area not affected by the inland water the nutrient concentrations were 0.026-0.031, 0.0005-0.0017, 0.033-0.043 and 0.019, respectively. 2. Great dominance were shown by one to three phytoplankton species at each sampling time. The most dominants were Leptocylindrus danicus, Chaetoceros pseudocurvisetus, and Chaetoceros rostratus in June, August, and October, respectively. Intertidal phytoplankton community were found to be quite distinct in its seasonal succession and also in its species composition from that of the other temperate sea areas. 3. Sexualities of Meretrix lusoria, Ruditapes philippinarum and Cyclina sinensis are dioecious, and the species are oviparous. 4. The reproductive cycles of M. lusoria and R. philippinarum can be classified into five successive stages (multiplicative, growing, mature, spent, and degenerative and resting stage), while those of Cyclina sinensis can be classified into six successive stages (multiplicative, growing, mature, spent, degenerative, and recovery stage). 5. Spawning of Meretrix lusoria occurs from May to October with a peak from June to July, and the percentages of the first maturity of female and male clams are over 50% in 35∼40 mm and 100% in 50 ∼60 mm of the shell length. 6. Spawning of Ruditapes philippinarum occurs from May to September with a peak spawning in July-August, and the percentages of the first maturity (biological minimum size) of these populations are over 50% in 20∼25 mm, and 100% in 35∼40 mm of the shell length. 7. Spawning of Cyclina sinensis occurs from July to September with a peak spawning in July-August. 8. Growth curves for the shell length and total weight fitted to von Bertalanffy's equation were expressed as follows: 1) Meretrix lusoria : ?? ?? 2) Ruditapes philippinarum : ?? ?? 3) Cyclina sinensis : ?? ?? 9. The location of the holes on the valves of Meretrix lusoria by boring snail, Neverita didyma varied widely, while most of holes on the valves were located at relatively definite position (umbo position) on the valves. The inner and outer diameter of the holes varied in proportion to the shell length of the clam. 10. Predation rates of Nerverita didyma was much greater at night than during the day in the laboratory, an average of 0.2 individual of clam was drilled and consumed per snail per day. 11. The amount of annual yield of Meretrix lusoria, Ruditapes philippinarum and Cyclina sinensis were estimated to be about 726.40M/T, 32.31M/T and 23.91M/T, respectively. 12. The productivity of Porphyra species is closely related with atomospheric factors in the culture ground through the seasons in 1985. The wind among the factors seems to have a good effect on the growth and production of Porphyra. 13. The annual yield of Porphyra species was estimated to be about 439,500 bundles by dried-laver. 14. The annual catch of commercial species of fisheries animals (except shell-fishes) was presumed to be about 38,430 kg and the fishes among them, including 13 species, was calculated to 30,740.5 kg, which dominated over 80% of total fishing amounts. The most important species of fishes was quantitatively Hemirhamphus sajori, whose catch was inferred to 3,300 kg at a fish-farm (10ha in scale) and 30.5% of the totality, followed by Platycephalus indicus.

Chitin 및 Chitosan이 생체내 카드뮴 축적에 미치는 영향 -키틴, 키토산 및 Dithiocarbamate Chitosan이 메기 간장과 신장내 카드뮴 축적에 미치는 영향-

유일수,류문희,신철호 한국환경보건학회 1998 한국환경보건학회지 Vol.24 No.3

This study was performed to investigate the effects of chitin, chitosan and dithiocarbamate chitosan on the cadmium accumulation in liver and kidney of catfish. The experimental groups were divided into four independent groups which were one control group and three experimental groups by cadmium alone treatment or chitin, chitosan and dithiocarbamate chitosan which cadmium. in order to investigate the effects of chitin, chitosan and dithiocarbamate chitosan on the cadmium accumulation in liver and kidney of catfish, the cadmium concentration, the metallothionein level were measured. The results obtained were as follows: 1. The cadmium concentrations in liver and kidney of catfish in cadmium alone treatment group were similar to that of the chitin treatment group, but chitosan and dithiocarbamate chitosan treatment groups were significantly decreased. 2. The metallothionein levels in liver and kidney of catfish alone treatment group were similar to that of the chitin treatment group, but chitosan and dithiocarbamate chitosan treatment groups were significantly increased. In conclusion, this study revealed the effect of chitin, chitosan and dithiocarbamate chitosan against cadmium accumulation in liver and kidney of catfish. It exhibited the highest effect at dithiocarbamate chitosan treatment group.

익산시 수질오염지역 주민 모발내의 중금속 함량에 관한 연구

유일수,류문희,최민규 원광대학교 환경과학연구소 2000 環境科學硏究誌 Vol.9 No.1

흰쥐의 납중독에 대한 dithiocarbamate chitosan 효과에 관한 연구

유일수,이정호,류문희,신철호,문연자 원광대학교 환경과학연구소 1998 環境科學硏究誌 Vol.7 No.2

키틴, 키토산이 흰쥐의 신장내 카드뮴축적과 효소활성에 미치는 영향에 관한 연구

유일수 ( Yu Il Su ),류문희 ( Lyu Mun Hui ) 원광대학교 환경과학연구소 2002 環境科學硏究誌 Vol.11 No.-