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Gelfoam이 백서악골 손상치유에 미치는 영향에 관한 연구
박창준(Chang Joon Park),윤중호(Jung Ho Yoon) 대한구강악안면외과학회 1983 대한구강악안면외과학회지 Vol.9 No.1
This study was undertaken to evaluate the effects of Gelfoam preparations on the healing process of rat s mandibular bony defects. 24 rats, sprague dawley strain, weighing about 400gm were used, devided into control group (4 rats) and experimental group (20 rats) Six rats were sacrificed every one week serially for four weeks and prepared microscopic slides with Hematoxylin-Eosin stain for pathological examination. The obtained results from this study were as follows. 1. Acute and chronic inflammatory cell infiltration was remarkable in first week control group and it showed decreasing tendency in second week control group. 2. New bone formation was found in second week control group and bony defect was filled with osseous tissue devoiding of lamella structure. 3. Inflammatory cell infiltration was obvious up to second week experimental group, foreign body reaction and necrotic bone were also observed. 4. New bone formation was noted in third week expeimental group and it showed very similar findings with control group in fourth experimental group. 5. There was no definit distinction both in control and experimental group as to periosteal bone formation. 6. There were persistant inflammatory reaction and delayed new bone formation in experimental groups compared with control groups by fourth weeks. Healing process was essentially the same in all groups.
대장 절제술 후 발생한 회장 정맥류 출혈을 캡슐 내시경으로 진단한 1예
박창준 ( Chang Joon Park ),이봉은 ( Bong Eun Lee ),전혜경 ( Hye Kyung Jeon ),김광하 ( Gwang Ha Kim ),송근암 ( Geun Am Song ),고상화 ( Sang Hwa Ko ),이소정 ( So Jeong Lee ),박도윤 ( Do Youn Park ) 대한소화기학회 2018 대한소화기학회지 Vol.71 No.6
We report a case of bleeding ileal varices associated with intra-abdominal adhesions after colectomy which was successfully diagnosed using capsule endoscopy. A 77-year-old woman visited the emergency department for several episodes of melena. She had a medical history of neoadjuvant chemo-radiation therapy and subsequent surgery for rectal cancer 6 years previously. Conventional diagnostic examinations including upper endoscopy, colonoscopy, and abdominal computed tomography could not detect any bleeding focus, however, following capsule endoscopy revealed venous dilatations with some fresh blood in the distal ileum, indicating bleeding ileal varices. The patient underwent exploratory laparotomy and the affected ileum was successfully resected. No further gastrointestinal bleeding occurred during the 6 months follow-up. Small intestinal varices are important differential for obscure gastrointestinal bleeding especially in patients with a history of abdominal surgery in the absence of liver cirrhosis, and capsule endoscopy can be a good option for diagnosing small intestinal varices. (Korean J Gastroenterol 2018;71:349-353)
게임용 동작 인터페이스를 위한 블롭 특징 기반 마커프리 모션캡쳐 시스템
박창준(Chang Joon Park),김성은(Sung Eun Kim),이인호(In Ho Lee) 한국컴퓨터게임학회 2004 한국컴퓨터게임학회논문지 Vol.4 No.-
본 논문에서는 사용자 직접 참여형 게임의 동작 인터페이스를 위한 실시간 마커프리 모션캡쳐 시스템 MIMIC(motion interface & motion information capture)을 제안한다. 2대의 동기화된 카메라에서 캡쳐되는 영상에서 컬러와 형태 특징 모델을 이용하여 인체의 루트 (root)와 머리, 손, 발과 같은 끝점 (end-effectors)들을 검출한다. 그리고, 칼만 필터 (Kalman filter)를 이용하여 검출된 루트와 끝점들을 추적하고, 보정된 카메라 위치로부터 3차원 좌표를 복원한다. 그리고, 팔꿈치와 무릎과 같은 중간관절 위치는 해부학적 제한 조건이 가해진 역운동학 해석에 의해 추정함으로 3차원 인체 동작을 실시간으로 복원한다. 일반적인 조명 환경에서 MIMIC 시스템을 구현해 본 결과, 다양한 3차원 인체동작을 실시간으로 복원할 수 있었다.
박주훈,이환명,최옥병,이창준,소봉근,이수민,Park, Joo Hoon,Lee, Hwan Myoung,Choi, Ok Byung,Lee, Chang Joon,So, Bong Keun,Lee, Soo Min 대한화학회 2001 대한화학회지 Vol.45 No.6
옥시폴리메틸렌옥시 유연격자를 갖는 새로운 H-자형 쌍동이 분자의 동족계열 액정화합물(PPPA-n)을 p-페닐페놀과 ${\alpha},{\omega}$-bis(2,5-dicarboxyphenoxy)alkanes 산염화물의 에스터화반응에 의하여 합성하였다. 유연격자의 길이는 옥시에틸렌옥시(n=2)에서 옥시데카메틸렌옥시(n=10)로 바꾸었다. 이들의 열역학적 값은 시차주사열분석기에 의하여 측정되어졌고,액정성은 가열판이 부착된 편광현미경에 의하여 조사되어졌다. A homologous series of new H-shaped twin liquid crystal molecules (PPPA-n) with flexible spacers, oxypolymethyleneoxy, has been prepared by esterification of acid chloride of $\alpha$,$\omega$-bis(2,5-dicar-boxyphenoxy) alkanes with p-phenylphenol. The length of spacer was varied from oxyethyleneoxy (n=2) to oxydecamethyleneoxy (n=10). Their thermodynamic data were measured by differential scanning calorimetry and liquid crystalline properties were investigated by a hot-stage polarizing microscope.
Schiff Base 단일-및 이메소제닉화합물의 액정성
박주훈 ( Joo Hoon Park ),최옥병 ( Ok Byung Choi ),이진석 ( Jin Seok Lee ),강근명 ( Keun Myoung Kang ),신주철 ( Joo Cheol Shin ),김기환 ( Ki Hwan Kim ),김학진 ( Hak Jin Kim ),이창준 ( Chang Joon Lee ),소봉근 ( Bong Keun So ),이수민 한국화학공학회 2005 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.43 No.1