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최혁진(H.J.Choi),오상우(S.W.Oh),이승국(S.G.Lee),김선동(S.D.Kim),이승현(S.H.Lee),이문진(M.J.Lee),변성훈(S.H.Byun),강원수(W.S.Kang),장석(S.Jang) 한국해양환경·에너지학회 2006 한국해양환경·에너지학회 학술대회논문집 Vol.2006 No.-
유조선 경신호는 1988년 포항 대보등대 3.5마일 해상에 침몰하였다. 침몰후 현재까지도 간헐적으로 잔존유가 유출되고 있어 선체내부에 남아 있는 잔존유의 추가 유출에 따른 해양오염사고 발생에 대한 위험성이 재기되고 있다 침몰선체로부터 잔존유 추가 유출 가능성을 조사하기 위해 2006년 5월 무인잠수정과 잔존유 시료채취장치 등 첨단 장비를 이용하여 경신호를 조사한 결과 선체 주변에는 이미 많은 장애물로 덮여 있으며, 잔존유 시료를 채취한 결과 탱크 내부에는 약 300㎘ 이상의 기름이 남아 있는 것으로 분석되었으며, 부식 등의 요인으로 잔존유 유출시 기상상태에 따라 차이는 있으나 1988 사고 당시와 같은 기상상태가 재현된다면 유출된 기름은 포항, 영덕 등 인근 해안가에 부착될 가능성이 있다. The oil tanker, Kyung Shin had sunken in the East Sea, 3.5 mile from Daebo light house of Pohang, Korea in 1988. Because the remained oil of the sunken tanker has been leaking slightly nowadays, it can be a dangerous marine pollutant. For the inspection of additional oil leakage and its possibility, the sunken ship, Kyung Shin was surveyed by using the ROV and oil sampling system in May, 2006. As a result of survey, there are numbers of obstructions on the tanker's body. Based on the survey results and the precedent salvage report, more than 300㎘ oil could be remained by estimation. If same weather condition is reappeared, spilled oil can stick to the coast near Pohang and Yeongdeok.
Four-axis Acupressure System for Deep Tissue Massage
K.-H. Lee(이강호),H. J. Lee(이혁진),H. J. Cha(차효정),D.-H. Ahn(안도현),H.-Y. Kim(김해용) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
In this paper, we propose a four-axis acupressure system suitable for deep tissue massage. Massage usually helps promote circulation and relax tight muscles. In particular, deep tissue massage releases tension in the deep layers of muscles and the connective tissues. This massage requires more pressure. The proposed system is based on a four-axis drive mechanism with acupressure of 12.5 kg/㎠. Acupressure rods connected to a four-axis drive system press the specified precise pressure points instead of fingers and thumbs. The shaft on each axis is driven by a corresponding motor through a pulley and belt transmission structure. One is to move the rods up to 900 mm in the longitudinal direction of the body according to the location of the acupuncture points, and the other is to move the rods by 70 mm horizontally from the center of the body. It also rotates 45 degrees and moves up and down by 100 mm. The system can support a weight of 100 kg with contact area of 8 ㎠. The system performs according to patterns predefined by massage therapists and has user interface via Bluetooth communication. The proposed massage system has the potential to be used in a massage-enabled bed application.