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Fabrication of Tissue Scaffold with 3D Printable Self-healing Ferrogel
문창욱,최영태,이근용 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1
Cell fate depends on various factors, including chemical factors and physical stimuli. Especially, appropriate external physical stimulation is critical for cells to be engineered in tissue engineering approaches. In this study, 3D printable self-healing ferrogel was prepared and used to fabricate a tissue scaffold, which can respond to the application of a magnetic field. Briefly, ferrogel was prepared from oxidized hyaluronate, glycol chitosan, adipic acid dihydrazide and superparamagnetic iron oxide nanoparticles via reversible Schiff base formation. This ferrogel, responding to the magnetic field under physiological conditions, showed self-healing behavior and was useful for 3D printing of a dynamic tissue scaffold. Various characteristics of the self-healing ferrogel were investigated. The effect of the magnetic field applied to the scaffold on chondrogenic differentiation of cells was also investigated in vitro
시변시 normal spot에 의해 초전도체에 발생되는 와전류의 효과
고태국,문창욱 연세대학교 산업기술연구소 1990 논문집 Vol.22 No.2
The Eddy current generated by the moving normal spot on superconductor depends on the shape of pole, the velocity of moving magnet, and the magnetic flux density. The Eddy Current that is taking place in a moving normal spot in a superconductor has been investigated in some detatils. The structure of the eddy current and magnetic field in the normal region has been studied.
와전류 및 회전자극형상이 초전도 자속 PUMPING에 미치는 영향
고태국,문창욱 연세대학교 산업기술연구소 1991 논문집 Vol.23 No.2
The eddy current and the magnetic field in the normal region have been studied. The normal spot is a excitation part when it is connected fluxpump. Eddy currents rely on the shape of normal spot, the velocity of moving normal spot, and externally applied magnetic field. The critical current region begins to be formed at the leading corner of the spot once ?? is attained at that spot.
벡터의 성질을 활용한 딥러닝 기반 노인 낙상 감지 알고리즘
문창욱 ( Chang-wook Moon ),이재욱 ( Jae-wook Lee ),원일용 ( Il-yong Won ),김현정 ( Hyun-jung Kim ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2
고령화 사회로 인한 노인의 건강과 안전에 대한 관심이 증가함에 따라 낙상 문제는 더욱 중요해졌다. 기존 연구들은 영상에서 인체의 관절위치를 측정하고 이것만을 활용하여 낙상을 감지했지만, 본 논문에서는 방향과 속력 정보를 추가하여 탐지 능력을 향상시켰다. 실험결과 기존 방식에 비해 향상된 성능을 관찰할 수 있었다.