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가토골수에서 유래된 골모세포의 하악골 결손부 이식시 골형성에 미치는 효과
박영주,남정훈,김보균,전민수,정재안,이정원,안장훈,강태인,박미희,임성철,Park, Young-Ju,Nam, Jeong-Hun,Kim, Bo-Gyun,Jeon, Min-Su,Chung, Jae-An,Lee, Jung-Won,Ahn, Jang-Hoon,Gang, Tae-In,Park, Mi-Hee,Lim, Sung-Chul 대한악안면성형재건외과학회 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.4
Purpose: The purpose of this experiment was to evaluate the clinical effect of cultured autoglogous osteoblasts as a way to treat the defect of mandible in rabbits. Materials and Methods: Twelve rabbits were used to determine the rate of osteogenesis. The osteoblasts were obtained from the iliac crest of rabbits using aspiration. They were then cultured in Dulbecco's Modified Eagles's Medium (DMEM) with beta-glycerophosophatate, L-ascorbicacid, and dexamethasone to proliferate and differentiate osteoprogenitor cells. The expression of osteogenic markers were detected by reverse transcription-polymerase chain reaction (RT-PCR) and silver nitrate staining techniques. Five, 10-mm holes were placed in each rabbit mandible to simulate defective regions with the use of a low speed trephine bur. In the experimental group, the previously cited defects were grafted with both activated osteoblastic and autogenous bone. The control group, however, was only grafted with autogenous bone. Both groups were then analyzed at 2, 4, and 8-week intervals using bone histomorphometric analysis. Results: According to histomorphologic analysis, the rates of new bone formation at the 2, 4, and 8-week intervals were 36%, 51%, and 23% for the control group, respectively; 52%, 39%, and 28%, for the experimental group, respectively. The experimental group showed higher rates of new bone formation compared to the control group at both the 2-week and 8-week interval. Conclusion: Bone marrow-derived osteoblasts seems to be a promising bone graft material.
박영주,Park, Yeong-Ju 한국정보통신집흥협회 2006 정보화사회 Vol.178 No.-
지난 12월 1일, 지상파DMB 서비스가 개시됨으로써 우리나라는 위성DMB를 포함, DMB를 '세계 최초'로 서비스하는 국가가 됐다. 이미 오래 전부터 DMB(디지털 멀티미디어 방송)는 국내 차세대 IT먹거리로 손꼽혀온 부분. 국내 상용화(와 활성화)를 발판으로 삼아 해외시장을 선점해나가겠다는 게 국내 입장이다. 실제 그동안 지상파DMB 활성화의 걸림돌로 지적돼 온 이동전화 사업자의 유통 참여가 KTF와 LG텔레콤을 필두로 1월 1일부터 시작됨으로써 지상파DMB 진영을 고무시키고 있는 분위기다.
박영주,Park, Yeong-Ju 한국정보통신집흥협회 2006 정보화사회 Vol.183 No.-
지그비 얼라이언스(ZigBee Alliance)가 9월 28일 서울 메리어트 호텔에서 '지그비 얼라이언스 오픈 하우스'를 갖고, 그 동안의 지그비 개발 성과를 발표했다. 이 자리에서는 지그비 관련 플랫폼이나 단말 개발 동향이 소개됐으며, 아울러 5층에서는 관련 업체들의 제품 전시가 이뤄졌다. 별도 마련된 전시장에는 국내 코윈(Korwin)과 레이디오펄스.TSC 시스템즈.TTA 외 프리스케일.엠버.TI.ST마이크로.텍트로닉스.오키.마이크로칩.크로스보우.Atmel 등 20개사가 참여했다.
박영주,Park, Yeong-Ju 한국정보통신집흥협회 2006 정보화사회 Vol.178 No.-
에어브로드밴드(대표 케네스 강 Kenneth Kang, www.airbb.com)는 미국의 'IT젖줄'인 실리콘밸리에 본사를 둔 한국계 기업이다. 지난 2001년 10월, 시스코 IP 기술과 삼성전자의 CDMA 기술을 섭렵한 전문가 5,6명으로 캘리포니아 산타클라라에서 설립된 이 회사는 무선 분야 새로운 기린아로 떠올랐다. 특히 'CDMA와 IP의 접목'을 장점으로 해 '와이어리스에 모바일(이동성)을 부가하는' 새로운 통신 조류에 강점을 갖고 있다는 평이다.
하악 후구치 삼각부에 발생한 후천성면역결핍증 관련 카포시육종: 증례보고
박영주,남정훈,노경록,방은오,김다영,김준현,정재안,신진업,강응선,Nam, Jeong-Hun,Park, Young-Ju,Noh, Kyung-Lok,Pang, Eun-O,Kim, Da-Young,Kim, Jun-Hyun,Chung, Jae-An,Shin, Jin-Eob,Kang, Eung-Seon 대한구강악안면외과학회 2009 대한구강악안면외과학회지 Vol.35 No.3
There are several oral lesions related with AIDS, such as candidiasis, hairy leukoplakia, Kaposi's sarcoma, aphthous stomatitis, lichen planus, and other opportunistic infectious diseases. Among the others, Kaposi's sarcoma, the most common malignant tumor associated with AIDS, is closely linked to the number of CD4+ T cell. Kaposi's sarcoma often occurs in palate, the most prone site, and has characteristic clinical features in most cases. Sometimes, the tumor induces underlying bone destruction at late stage. We report a case of a 27 year-old man with AIDS-associated Kaposi's sarcoma at left lower retromolar triangle, parapharyngeal area and discuss the management of AIDS patients in dentistry.
위축된 치조골에서 치조골 수평 확장술을 이용한 임플란트 이식술에 관한 임상연구
박영주,남정훈,송준호,연병무,노경록,방은오,정재안,신진업,강응선,Park, Young-Ju,Nam, Jeong-Hun,Song, Jun-Ho,Yeon, Byung-Moo,Noh, Kyung-Lok,Pang, Eun-O,Chung, Jae-An,Shin, Jin-Eob,Kang, Eung-Seon 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.4
The aim of this study was to evaluate the clinical applicability of a ridge splitting technique for reconstruction of narrowed edentulous alveolar ridges for dental implantation. 41 patients with 47 edentulous areas were included in this study. After corticotomy of a rectangular buccal segment and about 3-4 weeks healing period, the alveolar ridge was splitted, implant was placed. The initial ridge width varied between 2.5 and 7.0mm, average was 3.99mm. 68 dental implants were placed, and the gap between the implants and the bone is filled with various bone graft material, or none. All splitted sites showed sufficient bone volume for insertion of the implants at the moment of implantation. Over 1 year of follow-up period, five implants(7.3%) had mobility in two patients, among them, 2 implants(2.9%) sustained infection and removed. And any other complications were not noted. Our conclussion is that ridge splitting of the narrow edentulous area is a reliable and safe procedure in horizontally deficient ridges.
박영주,이해평,김현주,Park. Young-Ju,Lee. Hae-Pyeong,Kim. Hyun-Ju 한국방재학회 2010 한국방재학회논문집 Vol.10 No.3
In this study, we analyzed the combustion characteristics of four different floor covering materials(wood, monorium, laminatedpaper, and varnish-laminated paper) with regard to their ignitibility, thermal characteristics and flame retardancy by using an ignition temperature tester, a dual cone calorimeter, a thermogravimetric analyzer and limited oxygen index, for their fire risk assessment. According to the result, monorium had the lowest ignition temperature of <TEX>$325^{\circ}C$</TEX> and the laminated paper and the varnish-laminated paper promptly ignited before 7s. Further, the wood showed the largest total heat release of <TEX>$100MJ/m^2$</TEX>, and the varnish-laminated paper showed the highest peak heat release rate. From the thermogravimetric analysis, it was shown that all specimens underwent rapid weight loss at <TEX>$300{\sim}400^{\circ}C$</TEX>. The limit oxygen indices of the laminated paper and the varnish-laminated paper were in the range of 20~21%, while it was 34% for wood. This study enabled us to confirm that wood, laminated paper and varnish-laminated paper have a relatively short ignition time and are easy to burn but they all have low heat release. In contrast, wood showed the lowest fire risk among them and had excellent flame retardancy but with high heat release. 본 연구에서는 건축물 내장재 가운데 바닥재의 화재특성을 평가하기 위하여 목재, 모노륨, 장판지, 니스코팅 된 장판지 등 4종의 바닥재를 대상으로 콘칼로리미터, 발화온도시험기, 열중량분석기, 한계산소지수시험기 등을 이용하여 착화성, 발열특성, 난연성과 같은 연소특성을 분석하였다. 모노륨은 발화온도가 <TEX>$325^{\circ}C$</TEX>로 가장 낮았으며, 장판지와 니스코팅 된 장판지는 비교적 빠른 시간인 7초 이전에 착화가 시작되었다. 총열방출량은 목재가 <TEX>$100MJ/m^2$</TEX>로 가장 높게 나타났지만 최대열방출율은 니스코팅된 장판지가 가장 높은 것으로 나타났다. 열중량분석 결과, 모든 바닥재들이 <TEX>$300{\sim}400^{\circ}C$</TEX> 온도구간에서 급격한 중량감소를 보였으며, 한계산소지수는 장판지와 니스코팅 된 장판지가 20~21% 정도이고 목재는 34%로 나타났다. 본 연구결과를 살펴보면, 모노륨, 장판지, 니스코팅 된 장판지는 착화가 빠르고 연소가 용이한 반면, 발열량은 낮은 것을 알 수 있었으며, 목재는 비교적 착화위험성이 낮고 난연성은 좋지만 발열량이 높은 것으로 나타났다.