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서정길,김찬희,배윤정,문호성,김근용,박희연,윤호동,김창훈,변대석,홍용기,박남규 한국어병학회 2003 한국어병학회지 Vol.16 No.3
Mastoparan B (MPB)는 벌독으로부터 정제된 양친매성α-helical 구조를 취하면서 14개의 아미노산 잔기로 구성된 염기성 항균성 펩타이드로서 여러 가지 생물막과 작용한다. 본 연구에서는 우리 나라 연안의 적조 (HABs, harmful algal blooms)를 일으키는 4종의 적조생물 (Alexandrium tamarense, Chattonella catenatum)에 대한 MPB의 살조효과를 조사하였다. MPB의 4종의 적조생물에 대한 살조효과는 31.3㎍/㎖에서 세포의 lysis또는 ecdysis와 같은 형태로 현미경으로 관찰할 수 있었다. 또한 MPB는 C. marina 및 C. polykridorides에 대해서 A. tamarense와 G. catenatum보다 더욱 강한 살조효과를 나타내었다. 이러한 MPB의 HABs에 대한 살조효과연구는 새로운 살조물질을 개발하기 위한 자료가 될 것으로 생각된다. Mastoparan B (MPB), an antimicrobial cationic peptide isolated from the venom of the hornet Vespa basalis, is a basic amphipathic a-helical peptide composed of fourteen amino acid residues. In this study, we have investigated the algicidal effect of MPB against hatmful algae blooms (HABs) casative Alexandrium tamarense, Chattonella marina, Cochlodinium polykrikoides and Gymnodinium catenatum. The algicidal effect of MPB showed in the concentration of 31.3 ㎍/㎖ to 500 ㎍/㎖ against 4 HAB species and observed cell lysis or cell ecdysis by microscopy. MPB reacted more sensitive to C. marina and C.polykrikoides than A. tamarense and G. catenatum. The algicidal study of MPB against HABs will provides much insight into development of new algicidal substances.
( Young Dae Kim ),( Hyun Gyum Kim ),( Chu Lee ),( Hyun Il Yoo ),( Mi Seon Park ),( Soon Gyu Byun ),( Jae Suk Choi ),( Myung Mo Nam ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.10
We constructed marine forest to restore barren grounds which are expanding in the east coast of Korea using 2 methods of (1)seedlings transplantation method and (2)underwater floating ropes method. We transplanted 3 macroalgae species, Ecklonia cava, Undaria pinnatifida, and Saccharina. japonica to construct marine forest. Blade length of Undaria pinnatifida on underwater floating ropes was 56.70±8.69㎜ in April and grew 68.75±22.30㎜ in May and 70.75±14.36㎜ in July. Blade length of S. japonica was shown 97.95-143.00㎜ in April to June. Blade length of Ecklonia cava was 30.50±1.91㎜ in May, 41.55±1.84㎜ in August, 45.30±2.57㎜ in November, 2009 and 45.30±1.99㎜ in February, 2010. The survey on Dangsa area, Ulsan-city in January, 2009 found a total number of 15 algal species(1 brown algae, 14 red algae species) with the highest variety at 5m depth of A station and the lowest at 8m depth of A and B stations. The March survey showed a total of 24 species (1 green algae, 1 brown algae, 22 red algae species) with the highest variety of 11 at depths of 3m and 5m of B station and the lowest of 6 at 10m of B station. In May, total biomass was 3,755.4g (green algae 1.2g, brown algae 199.0g, red algae 3,555.2g). From January, 2009, we found that E. cava was dominant at the depths of 3m and 5m of A and B stations while Peyssonnelia capensis was dominant at the depth of 8m of A station. The 8m depth of B station was dominated by Acrosorium polyneurum. In May, Grateloupia lanceolata was dominant at 8m depth of A station while other depths were dominated by Phycodrys fimbriata. In June, the dominant species were G. lanceolata at the 3m depth, E. cava at the 5m and P. fimbriata at the depths of 8m and 10m of A station. Under B station, G. lanceolata was dominant at the depths of 3m and 5m while P. fimbriata was dominant at the depths of 8m and 10m.
김대호,최성우,강훈,조상현,박영민,변대규,조백기 대한피부과학회 2000 大韓皮膚科學會誌 Vol.38 No.8
We report seven cases of cutaneous sarcoidosis without systemic involvement. All cases showed specific skin lesions which were papules (2 cases), patches (2 cases), subcutaneous nodules (2 cases) and plaques (1 case), respectively. Histologic examinations of the specimens commonly showed typical noncaseating granulomas. Although we performed the various laboratory studies, there was no evidence of systemic involvement in any case. Treatment with intralesional and/or topical steroid resulted in good responses, but we experienced some relapses of the skin lesions after withdrawal of treatment. Excision was the choice of treatment for subcutanous nodules. During the follow-up periods (1 - 4 years), we could not find any evidence of systemic involvement. Our cases represent the unusual cases of cutaneous sarcoidosis without systemic involvement.
최성대(Seong-Dae Choi),정선환(Seon-Hwan Cheong),김기만(Gi-Man Kim),변용근(Yong-Kun Byun),김잠규(Jam-Gyu Kim),양승철(Seung-Cheol Yang) 한국생산제조학회 2007 한국공작기계학회 춘계학술대회논문집 Vol.2007 No.-
Industrial technology has been used to surface hardening method to improve the surface. Shot peening is the one of the surface hardening method and it is used for removing the defect from the surface of steel and improving the fatigue strength on surface. The object of this research work is to investigate the influence of mechanical property by shot peening of hinge spring throughout the experimental method on roughness, hardness, creep, fatigue test and photography. From the result of the this paper, shot peening is improved the surface hardness, heating resistance, fatigue strength of hinge spring and has examined that shot peening is essential requirement to design the hinge spring.