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이기윤,전용순,남정수,이난주,윤혜경,Lee, Ki-Yun,Chun, Yong-Soon,Nam, Jeong-Su,Lee, Nan-Joo,Yoon, Hye-Kyoung 대한소아외과학회 2008 소아외과 Vol.14 No.1
Accessory cervical thymic tissue has been rarely reported. However, it should be included in the differential diagnosis of neck masses in children, along with branchial anomalies, lymph nodes and other tumors. This lesion occurs along the descending line of the thymus between the angle of mandible and superior mediastinum. A 2-month-old infant presented with an asymptomatic left sided neck mass. MRI revealed a well defined homogeneous mass in the deep lobe of left parotid gland. At operation, an easily identified soft tissue mass was found in the left submandibular area, measuring $3{\times}1.5cm$. It was completely excised. Microscopic examination revealed normal thymic tissue.
Dielectric elastomer를 이용한 액추에이터의 압전 특성에 관한 연구
정은아(Eun-A Jeong),이기윤(Ki-Yun Lee),서정균(Jeong-Kyun Seo),윤소남(So-Nam Yun),정황훈(Hwang-Hun Jeong) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
In this paper, the energy harvesting technique using smart material is discussed. This paper deals with the piezoelectric property of a actuator using the dielectric elastomer which is a kind of the electroactive polymer(EAP). The dielectric elastomer actuators are fabricated using VHB4905 film and conductive carbon grease, and the fabricated actuators are 80[㎜] × 80[㎜] × 0.023[㎜], 80[㎜] × 80[㎜] × 0.035[㎜] and 80[㎜] × 80[㎜] × 0.05[㎜], respectably. To confirm the piezo effects of the fabricated actuators, the experiment knocking constant force in the actuator was conducted. From the experimental results, it was confirmed that the higher voltage from the more thickness is gotten. And the possibility of the energy harvesting system using EAP actuator was suggested.