In this study, the bridge management system framework for the application of UAV collection data was proposed. The framework of UAV Bridge Management System(UBMS) is designed based on algorithm of Bridge Management System(BMS), administered by MOLIT. The UAV Bridge Management System will help facility managers to conduct safety diagnosis by providing rapid procedure.

Because of the characteristics of long-span bridges, the cable tension is considered a critical item in their maintenance. In particular, because the evaluation of the cable tension in a suspension bridge is essential for understanding the general status of the structural system, identifying the initial values of this force in the construction of a bridge and then accurately predicting and comparing its estimated values during traffic use are very important tasks for the maintenance of a suspension bridge. In this paper, to verify the algorithm for estimating the cable tension of hanger cables using the back analysis technique, an ambient vibration test was conducted at a suspension bridge.

There are some risk and inefficiency when inspectors make an inspection of the bridge. To remove the risk, many demonstration studies of bridge inspection based on the unmanned inspection equipment are actively in progress recently. Because the unmanned aerial vehicles enable the inspectors to be more safe. This study investigates the demonstration project of bridge inspection based on the unmanned inspection equipment in USA and Japan.

In this study, the integrated management code of damage information in bridges using the data from unmanned inspection equipment (i.e., drone with hybrid imaging equipment) was proposed. It was found that the integrated management code could be used in developing bridge management system based on 3-dimensional information model of bridge.

In this study, the integrated management code of damage information in bridges using the data from unmanned inspection equipment (i.e., drone with hybrid imaging equipment) was proposed. It was found that the integrated management code could be used in developing bridge management system based on 3-dimensional information model of bridge.

A country has been devoting a lot of attention in order to prepare the aging facilities. we were examined the status of hydrological facilities and reviewed the detailed guidelines for the safety assessment procedure. This study were derived the problems of safety assessment procedure by comparing detailed guidelines and field applications. Also, we proposed improvement plan of the assessment procedure.

Chelidonium majus (CM) contains several isoquinoline alkaloids that have been reported to have various biological activities such as anti-inflammatory, antimicrobial, antioxidant, immune-modulatory, and antitumoral. It has been reported that the extract of CM had an antioxidant potential, however the mechanism has not been verified. In this study, we found that CM extract activated FOXO3a. FOXO3a is a transcription factor that involved in various biological processes such as cell cycle arrest, apoptosis, DNA repair, and ROS detoxification. Transcriptional activities of FOXO3a were regulated by post-translational modifications including phosphorylation, acetylation, and ubiquitination. Protein level of FOXO3a was increased by CM extract. Promoter activities of FOXO-transcriptional target genes such as MnSOD, p27 and GADD45 were activated by CM extract in a dose dependent manner. In addition, protein level of MnSOD, major antioxidant enzyme, was increased by CM extract. Thereby ROS level was decreased by CM in old HEF cells. These results suggest that CM extract has an antioxidant activity through FOXO activation.