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Scaffold상에 식립한 사람치주인대섬유모세포를 통한 치주조직공학
김성신,김병옥,박주철,장현선,Kim, Seong Sin,Kim, Byung-Ock,Park, Joo-Cheol,Jang, Hyun-Seon 대한치주과학회 2006 Journal of Periodontal & Implant Science Vol.36 No.3
Human periodontal ligament fibroblasts (hPDLF) are very important for curing the periodontal tissue because they can be differentiated into various cells. A tissue engineering approach using a cell-scaffold is essential for comprehending today's periodontal tissue regeneration procedure. This study examined the possibility of using an acellular dermal matrix as a scaffold for human periodontalligament fibroblast (hPDLF). The hPDLF was isolated from the middle third of the root of periodontally healthy teeth extracted for orthodontic reasons. The cells were cultured in a medium containing Dulbecco's modified Eagle medium supplemented with 10% fetal bovine serum at $37^{\circ}C$ in humidified air with 5% $CO_2$. The acellular dermal matrix(ADM) was provided by the US tissue banks(USA). Second passage cells were used in this study. The hPDLF cells were cultured with the acellular dermal matrix for 2 days, and the dermal matrix cultured by the hPDLF was transferred to a new petri dish and used as the experimental group. The control group was cultured without the acellular dermal matrix, The control and experimental cells were cultured for six weeks. The hPDLF cultured on the acellular dermal matrix was observed by Transmission Electron microscopy (TEM). Electron micrography shows that the hPDLF was proliferated on the acellular dermal matrix. This study suggests that the acellular dermal matrix can be used as a scaffold for hPDLF.
Development and Control Strategies of an Unmanned Autonomous Forklift
홍금식(Keum-Shik Hong),김민환(Min-Hwan Kim),이석(Suk Lee),김성신(Seong-Sin Kim),홍봉희(Bong Hee Hong),위디오트리앗모 아우기(A. Widyotriatmo),브이티탄 규엔(Quyen T. T. Bui),이정훈(Jung Hun Lee),탐바 투아 아구스티누스(Tua A. Tamba) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
This paper presents the control strategies for the development of an unmanned autonomous forklift. A control architecture using several sensors (vision, ultrasonic sensor, laser range finder, etc.) and a PC controller is presented. An ultrasonic satellite and gyro are used for the localization, and a vision system is utilized for obstacle detection and the measurement of pallet position. The CAN communication network is utilized to provide the drive-by-wire technology for the unmanned autonomous forklift.