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- 저자 : 전태병 ( Tae Byeong Jeon ) (검색결과 2 건)
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전태병,임채환,Jeon, Tae-Byeong,Im, Chae-Hwan 한국기계연구원 1986 기계연구원소보 Vol.16 No.-
Recently deck crane of multi purpose cargo vessel (MPCV) is designed to posi¬tion in side instead of in the center line of the upper deck with a view to reduce the transportation cost and shipbuilding cost by shortening the length of ship. In this paper, the crane post was at first designed according to the crane maker’s specification and parent ship and the structure is analysed with Finite Ele¬ment Method. Through the careful reviews on the result of analysis, the final design of crane post was modified. The crane post is designed as a cylindrical in upper part and hexagonal in lower part instead of cylindrical on the whole as before. The connecting part of crane post is designed with the form of mixture of the cylinderical and hexagonal. Since the center of cylindrical and hexagonal section are not on the same line, it is expected to have the stress concentration. So, in order to attenuate the concentrated stress on the connecting part, the upper and lower parts was stiffened by inserting plate to enlarge the area of welding. The structure of deck part includes the tank side floor which is depend on the lower structure of the crane post that would support the force of the crane post by placing with 1.5 frame interval of the vertical plate.
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김유아 ( You Ah Kim ),전태병 ( Tae Byeong Jeon ),장욱주 ( Wookju Jang ),박병준 ( Byoung Jun Park ),강학희 ( Hakhee Kang ) 대한화장품학회 2019 대한화장품학회지 Vol.45 No.3
본 연구에서는 국내 자생식물로부터 지속가능한 천연 항노화 화장품 신소재 개발을 위해 수생식물인 어리연꽃의 친환경 아쿠아포닉스 시스템 적용 가능성 및 항노화 효능을 검증하였다. 어리연꽃은 아쿠아포닉스 시스템내에서 부엽형태의 담액식 방식에서 성장 가능하고, 근경번식을 통해 증식됨이 확인되었다. 또한, 어리연꽃의 재배에 질산염, 칼륨 및 수온이 크게 영향을 미치며, 최적 조건은 각각 80 μg/mL, 63.5 μg/mL 및 25 ℃로 확인되었다. 특히 주성분 2종(3,7-di-O-methylquercetin-4’-O-β-glucoside 및 sweroside)이 약 5 μg/mL 이상 함께 존재 시 시너지 유효성이 있었다. 어리연꽃 추출물은 환경 유해물질 benzo[α]pyrene, ammonium nitrate, formaldehyde에 의해 손상된 피부 세포의 회복에 유의미한 효과가 있으며, 염증성 조절인자인 PGE<sub>2</sub>, TNF-α 및 COX-2를 억제하고, 콜라겐 분해 효소인 MMP-1의 생성을 억제함으로써 항염 및 항노화 효과가 있음이 확인되었다. 따라서 아쿠아포닉스 기술 기반 어리연꽃 추출물의 원료 표준화는 화장품 분야에서 신규 항노화 기능성 소재로서의 활용 가능성이 있을 것으로 사료된다. To develop sustainable new natural anti-aging ingredients from Korean native plants, we investigated the cultivation potential of Nymphoides indica using the eco-friendly aquaponics system, and tested the anti-aging effects from N. indica extracts. N. indica could be grown in aquaponics system using floating leaved deep water culture method, and propagated through rhizome propagation. It was confirmed that the nitrate (80 μg/mL), potassium (63.5 μg/mL) and water temperature (25 ℃) greatly affected the cultivation of the N. indica. In addition, synergistic effects were found when two major components (3,7-di-O-methylquercetin-4’-O-β-glucoside & sweroside) were present at more than about 5 μg/mL. The extract had a significant effect on the recovery of skin cells damaged by environmental pollutant such as benzo[α]pyrene, ammonium nitrate, formaldehyde. It also suppressed PGE<sub>2</sub>, TNF-α and COX-2, and inhibited the production of MMP-1. Taken together, the results suggested that the standardized extracts of N. indica cultivated in the aquaponics has considerable potential as a new cosmetics ingredient with an anti-aging effect.
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