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안희순,박종권 한밭대학교 2008 한밭대학교 논문집 Vol.6 No.1
본 논문에서는 UWB 통신에 적용할 수 있는 새로운 트리 모양의 안테나를 제안하였다. 프랙탈의 반복계수가 증가할수록 안테나의 공진 주파수가 낮아지게 된다. 사각 트리안테나는 사다리꼴 트리 안테나 와 비교했을 때 같은 대역폭을 가지게 된다. 측정 결과로부터, 제안된 안테나는 UWB 대역 (3 .1GHz-4.7GHz)을 포함하고 전주파수 대역에 걸쳐 좋은 방사성능을 갖게 된다 A novel tree-shaped microstrip antenna is presented for ultra-wideband applications in this paper. It is found that as the repeated number of fractal increases, the resonant frequency of the antenna lowered. The rectangular tree antenna has the same bandwidth compared with the trapezoidal tree antenna. From the measured results, the proposed antenna covers the low UWB band(3.1GHz- 4.8GHz), along with good radiation performance over the entire frequency range.
Shock로 發生한 成人 Respiratory Distress Syndrome
安喜淳,張連珍,金仁世,趙裕永,金晟烈 순천향의과대학 1978 Journal of Soonchunhyang Medical Science Vol.1 No.1
The adult respiratory distress syndnome was originated from acute hemorhagic and septic shock in 3 patients after operation. All patients recovered with active management (PEEP,albumin,diuretics,and steroid) and various intensive therapies. Etio-logical, Pathophysiological and therapeutic points in A.R.D.S. were discussed with review of articles.
김성열,장연진,안희순 대한마취과학회 1978 Korean Journal of Anesthesiology Vol.11 No.3
A 2 day old male infant, with congenital diaphragmatic herniation on the left side, received diethyl ether inhalation anesthesia, through a 14F endotracheal tube connected with a Jackson-Ree's sytem for repair of herniation. Throughout anesthesia, the anesthetic gases were not humidified. Signs of high airway obstruction (intercostal space and sternal notch retraction during inspiration, with wheezing and cyanosis) were revealed at the end of operation. Because of in effectiveness of endotracheal suction, immediately tbe endotracheal tube was extubated, and endotracheal tube obstruction with a dry mucous crust at the tip of the lumen was found. It is strongly suggested that the etiological causes of tube obstruction might be mainly the anesthesia method wbich has inadequate humidification during anesthesia. This case of endotracheal tube obstruction due to dry mucous crust during inhalation anesthesia was presented and the literature and management are discussed.