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유대현,장세진,김성윤,이중달,강위석,김목현,김태화,변정원,장정순 대한내과학회 1989 대한내과학회지 Vol.37 No.3
Polyarteritis nodosa is one of the necrotizing vasculitis involving predominantly small and medium sized arteries. Polyarteritis nodosa may affect many organs such as kidney, heart, liver, gastrointestinal tract and muscle. In several autopsy studies, gall bladder involvement was found in 10 to 40% of patients with this disease. Rarely polyarteritis nodosa may be presented clinically as acute cholecystitis or chronic cholecystitis. We experienced a case of polyarteritis nodosa presenting as acute cholecystitis, diagnosed by pathological examination of a gall bladder specimen surgically removed.
무선 바이오센서 네트워크에서 에너지 효율을 고려한 해충 감지 시스템을 구축하기 위한 프로토콜
유대현,이주상,안병구,김남수 한국인터넷방송통신학회 2008 한국인터넷방송통신학회 논문지 Vol.8 No.2
본 논문에서는 무선 바이오센서 네트워크를 이용하여 에너지 효율을 고려한 홈 네트워크 해충 감지 시스템프로토콜을 제안한다. 제안된 프로토콜의 기본 아이디어 및 특징은 다음과 같다. 첫째, 소스와 목적지 사이의 경로를 설정하기 위한 에너지 효율과 안정성 기반의 시분할적인 트리 구조 경로 설정방법. 둘째, 멀티홉을 이용한 방향성이 있는 Data Gathering 구조이다. 설정된 트리구조의 경로위로 패킷 데이터를 전송 할때 전력 절약 및 경로의 lifetime을 효과적으로 지원하기 위해서 선택적 플러딩을 사용한다. 이로 인해 각노드의 전력을 절약하고 전송 지연(transmission delay)를 줄임으로써 전체 네트워크의 lifeime이 향상되고 홈 네트워크상의 효율성이 향상된다. 제안된 프로토콜의 성능평가는 OPNET (Optimized Network Engineering Tool)을 사용하여 이루어진다.
유대현,최문기,오승환,권대근,전인철,손도경,박성원,Yoo, Dae-Hyun,Choi, Moon-Ki,Oh, Seung-Hwan,Kwon, Dae-Keun,Jun, In-Chul,Son, Do-Kyoung,Park, Sung-Won 대한악안면성형재건외과학회 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.6
Pilomatricoma or calcifying epithelioma is a benign tumor of hair follicle origin. Pilomatricoma presents a slowly enlarged and asymptomatic mass that located dermal or subdermal area. It showed mostly on face and upper limb and head and neck represents 50% of all case. And it developed almostly in the first 2 decade of life. Histologically, encapsulated mass composed of solid small basophilic cells and eosinophilic ghost cells. Surgical excision is the treatment choice and rarely recurs. The purpose of this article is to represent of pilomatricoma on subauricular region that treated with mass excision and local transpositional flap. Althrough the presurgical diagnosis of pilomatricoma may be difficult, clinicians must keep in mind the differential of head and neck masses that located subdermal layers.
백서의 대망을 혈관경으로 이식하여 생성시킨 이차적 도서형 피판
유대현,탁관철,유재덕,Lew, Dae-Hyun,Tark, Kwan-Chul,Lew, Jae-Duk 대한미세수술학회 1996 Archives of reconstructive microsurgery Vol.5 No.1
The omental pedicle based on right gastroepiploic vessels is designed new experimental model for prefabrication(revasculirization) of skin flaps in rats. A $2.5{\times}4cm$ pack of omentum with right gastroepiploic vessels was transferred under a bipediceld panniculocutaneous flap which is $2.5{\times}8cm$ size. At day 7, all four margin was divided and the flap was rasied as an secondary island flap connected only by its vascular pedicle, then the composite flap sutured back in place. The flap perfusion was examined by dermofluorometry and flap survival area was measured at day 12. The Secondary island flap demonstrated a dye fluorescence index(DFI%) of $31.38{\pm}12.33$ and survival rate $80.47{\pm}9.61$ The survival rate was increased when DFI% and contact surface between vascular carrier and skin flap was increased. An india ink injection and histologic examination provided visual evidence of revasculization. The omental pedicle is a promising and safe model for revasculirization of other tissues.