• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2020.11a
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• pp.31-32
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• 2020

정보통신 기술의 발달로 항만 및 항만배후단지에도 다양한 시설물들이 구축되고 있다. 그리고 구축된 항만 및 항만배후단지 시설물들은 「항만법」, 「지하안전관리에 관한 특별법」에 따라 지속적으로 유지관리 및 갱신을 수행하도록 하고 있다. 이에 본 연구에서는 항만 및 항만배후단지에 매설된 지하시설물을 비굴착방식으로 탐사하여 정확도를 확보할 수 있는 방안으로 Coded Signal 기반의 NM-GPR 방식을 제안했다. 그리고 실증을 통해 Coded Signal 기반의 NM-GPR의 정확도를 검토하였으며 향후 개선방향을 제시하였다.

• Rapid Communication in Photoscience
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• v.2 no.2
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• pp.52-55
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• 2013

Proteorhodopsin (PR) is a photoinduced proton pump found abundantly in ocean and fresh water habitat, and has an important role in photoenergy conversion to bioenergy in the living cells. Numerous sequences that encode PR protein variants were discovered by environmental genome sequencing and they indicated the high sequence similarity. A new-type of PR (YS-PR) which had been discovered from the surface of Yellow Sea was found to have only 5 amino acid differences from the previously known green-light absorbing PR (GPR) protein, but showed different photochemical properties. This YS-PR showed a 10 nm red-shifted absorption maximum, when compared with GPR. It also showed slower photocycling rate than GPR. However, the photoconversion rate of YS-PR was fast enough to pump protons. Four different amino acids out of 5 were similar to Blue-light absorbing PR (BPR), suggesting that those residues might be responsible for the observed spectral and photoconverting properties.