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남정훈,노경록,유우근,이병민,전지현,박수현,안장훈,김정희,Nam, Jeong-Hun,Noh, Kyung-Lok,Yoo, Woo-Geun,Lee, Byeong-Min,Jeon, Ji-Hyeon,Park, Su-Hyun,Ahn, Jang-Hoon,Kim, Jung-Hee Korean Association of Maxillofacial Plastic and Re 2011 Maxillofacial Plastic Reconstructive Surgery Vol.33 No.1
The goal of this treatment is the surgical-orthodontic eruption of impacted permanent teeth associated with a large dentigerous cyst in a preadolescent patient. Although enucleation of the entire cyst and the extraction of impacted teeth are common treatments, missing permanent teeth cause several problems in young patients. In this report, an 11-year-old female visited with the chief complaint of a large radiolucent lesion from the mandibular anterior area to the left mandibular posterior area. The permanent left canine and premolars were displaced toward the mandibular inferior border area. The extraction of infected deciduous teeth and marsupialization were performed. After 4 months, orthodontic buttons for forced eruption were applied to the impacted permanent teeth. The teeth emerged into the oral cavity 3 months after the orthodontic treatment. Although the root form was abnormal, there were no other pathogenic signs. The alveolar bone had a normal trabecular pattern and the teeth appeared to be well maintained at postoperative 24 months.
Botryoid Odontogenic Cyst on Mandibular Anterior and Both Body Area: a Case Report
남정훈,김다영,박영주,안장훈,강태인,박미희,유우근,김보균,이정원,김정희,Nam, Jeong-Hun,Kim, Da-Young,Park, Young-Ju,Ahn, Jang-Hoon,Gang, Tae-In,Park, Mi-Hee,Yu, Woo-Geun,Kim, Bo-Gyun,Lee, Jung-Won,Kim, Jung-Hee Korean Association of Maxillofacial Plastic and Re 2010 Maxillofacial Plastic Reconstructive Surgery Vol.32 No.4
Botryoid odontogenic cyst (BOC) is considered a rare multilocular variant of the lateral periodontal cyst. In this report, a 67-year-old male visited with chief complaint of severe mobility on mandibular incisors. Multilocular radiolucent lesion was seen from the right premolar to the left premolar area, involving almost the whole mandible. Histologically, the botryoid odontogenic cyst showed focal nodular thickening of the lining epithelium. These thickening often showed swirling appearance of the cells. Cyst enucleation and bone graft on mandible anterior and both body area were performed under general anesthesia, and postoperative healing was favorable without recurrence.
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.
최훈 ( Hoon Choi ),주형중 ( Hyung Joong Joo ),남정훈 ( Jeong Hun Nam ),윤순종 ( Soon Jong Yoon ) 한국복합신소재구조학회 2010 복합신소재학회논문집 Vol.1 No.1
이 논문는 펄트루젼 FRP 부재를 이용하여 부유식 태양광 에너지 발전시설을 개발하기 위한 연구의 결과이다. 펄트루젼 FRP는 다른 구조용 재료와 비교하여 부식에 대한 저항성이 크고, 단위중량당 강도 및 강성이 크다는 등 역학적, 물리적 성질이 우수하여 부유식 태양광 에너지 발전시설의 개발에 적합하다고 할 수 있다. 이 연구에서는 부유식 태양광 에너지 발전시설의 개발에 관해 간략히 설명한 후 부유식 태양광 에너지 발전시설을 개발하기 위해 제작된 펄트루젼 FRP부재의 생산과정을 보여주고, 인장 및 압축시험을 통해 재료의 역학적 성질을 조사하였다. 재료 시험결과 얻어진 결과를 이용하여 부유식 태양광 에너지 발전시설 구조물에 대한 유한요소해석을 하였다. 유한요소 해석결과 다양한 경계 및 하중 조건에 대해 각 부재의 구조성능을 검토하였고, 볼트접합부의 구조성능을 유지하는데 필요한 최소한의 하중저항능력을 평가하였다. 또한, 강도예측을 위한 실내실험을 실시하여 실험결과를 유한요석 결과와 비교분석 하였으며, 비교분석 결과 부유식 태양광 에너지 발전시설의 개발을 위한 적절한 볼트접합방식을 선정할 수 있었으며, 선정된 볼트접합 방법을 이용하여 부유식 태양광 에너지 발전시설 구조물을 조립하고 현장에 성공적으로 설치하였다. In this paper, we present the result of investigations pertaining to the development of the floating type photovoltaic energy generation system. Pultruded FRP has superior mechanical and physical properties compared with those of conventional structural materials. Since the FRP has an excellent corrosion-resistance and high specific strength and stiffness, the FRP material may be highly appreciated for the development of the floating type photovoltaic energy generation system. In the paper, we discussed the development concepts of the floating type photovoltaic energy generation system, briefly. The mechanical properties of the FRP structural member used in the development are investigated through the tensile and compression tests. Test results are used in the finite element analysis and the design of the system. In addition, bolted connections of the members are briefly discussed and the strengths of FRP bolted connections are estimated based on the results of experiments. The experimental results are compared with the finite element analysis results and discussed briefly. The floating type photovoltaic energy generation system is designed, fabricated, and installed successfully in site.
기저세포모반증후군과 연관된 다발성 치성각화방종의 치료시 술전 조대술과 술후 교정적 맹출의 사용 치험 1례
강태인,박영주,남정훈,안장훈,강혜진,송준호,정재안,신진업,Gang, Tae-In,Park, Young-Ju,Nam, Jeong-Hun,Ahn, Jang-Hoon,Kang, Hae-Jin,Song, Jun-Ho,Chung, Jae-An,Shin, Jin-Eob 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.5
Basal cell nevus syndrome is a rare inherited disorder characterized by mulitple cutaneous basal cell carcinoma, pits of the palms and soles, cysts of the jaws, skeletal abnormalities and ectopic calcifications. Currently there are new lines of investigation based on biomolecular studies, which aim at identifying the molecules responsible for these cysts and thus early allowing an early diagnosis of these patients. We report a case of a 9-year-old boy with the various manifestation of basal cell nevus syndrome, which are multiple odontogenic keratocysts, pits of the soles, bifid ribs, ectopic calcification, macrocephaly, and hypertelorism, etc. Total five odontogenic keratocysts were found. For the reduction of the size of the odon-togenic keratocysts, following preoperative marsupialization, there were surgically enucleated. And the impacted upper right lateral incisor and canine are tracted orthodontically.
가축사체와 해조류로부터 제조된 액비의 토양 시용이 적상추의 생육에 미치는 영향
강세원 ( Se-won Kang ),남정훈 ( Jeong-hoon Nam ),조건영 ( Geon-yeong Jo ),이원준 ( Won-jun Lee ),박재혁 ( Jae-hyuk Park ),조주식 ( Ju-sik Cho ) 한국환경농학회 2017 한국환경농학회 학술대회집 Vol.2017 No.-
국내의 축산업은 고도성장을 이루고 있고 그에 따른 축산규모 및 사육두수는 매년 증가하고 있지만, 기상이변 및 이전에 없었던 가축전염병 발병에 의한 피해가 점점 커지면서 가축사체의 발생 량 또한 증가하고 있다. 또한, 최근 해양에서는 대규모의 해조류가 유입되어 해양 악취를 일으키고 있고, 선박 스크루나 해상 양식장 시설 등에 걸려 조업과 항해를 방해하고 시설물 파손, 양식물 유실 등의 피해를 일으키고 있어 환경에 악영향을 끼치고 있다. 하지만 가축사체와 해조류는 작물의 생육을 촉진시키는 미네랄 성분이 풍부하여 충분히 재활용이 필요한 자원이라고 판단된다. 이에 본 연구에서는 돼지사체와 모자반을 이용하여 분해와 발효 과정을 거쳐 제조된 액비가 적상추의 생육에 미치는 영향을 조사하였다. 적상추 재배에 사용된 토양은 pH가 5.42, EC가 0.20 dS m<sup>-1</sup>, OM 함량이 5.85 g kg<sup>-1</sup>, T-N 함량은 0.33 g kg<sup>-1</sup>으로 일반 재배지 토양에 비해 양분이 부족한 편이었다. 적상추 재배는 유리온실에서 자연광을 이용하여 8주간 진행되었으며, 처리조건은 control (Cn), inorganic fertilizer (IF), 돼지사체 액비 (ALF), 모자반 액비 (SLF), ALF+IF 및 SLF+IF 처리구로 나누었다. 무기 비료는 농촌진흥청 표준시비량에 준하여 시비하였고, 돼지사체 액비와 모자반 액비는 1000배 희석 후 40 mL씩 주 1회 시비하였다. 그 결과 적상추의 생육은 ALF+IF 및 SLF+IF 처리구가 다른 처리구 에 비해 생육이 좋은 결과를 보였다. 적상추의 초장, 근장, 지상부 생체중, 지하부 생체중, 잎수 및 잎폭은 각각 24.6~25.1 cm plant-1, 33.6~35.6 cm plant-1, 63.2~64.7 g plant<sup>-1</sup>, 21.1~22.4 g plant<sup>-1</sup>, 26.0~27.0 ea plant<sup>-1</sup> 및 10.3~10.4 cm plant<sup>-1</sup> 범위로 다른 처리구에 비해 왕성한 생육량을 보였다. 이러한 결과는 액비가 작물의 성장을 촉진시키고 무기 비료가 생육을 증가시키는 역할로 인해 적상 추의 생육이 좋았던 것으로 보인다. 반면에 단일 액비 처리구는 작물의 성장은 촉진시킨 반면 흡수 이용될 수 있는 양분 부족으로 인해 생육이 정체되어 적상추의 생육량이 낮았던 것으로 판단된다. 따라서 적상추 재배시 돼지사체 액비와 모자반 액비는 무기 비료와 같이 혼합하여 재배한다면 자원 재활용 뿐만 아니라 작물의 높은 수확량을 기대할 수 있을 것으로 판단된다.
노후 콘크리트구조물의 리모델링 공사시 Slab지지 동바리의 적정간격 산정을 위한 해석적 연구
박준석 ( Park Joon-seok ),최훈 ( Choi Hoon ),남정훈 ( Nam Jeong-hun ),윤순종 ( Yoon Soon-jong ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.1
In this paper, we present the analytical study results pertaining to the determination of appropriate the space of slab support staging system and load carrying capacity for the remodeling of deteriorated concrete structure. As loads are applied on the slab gradually, slab support staging system may be failed in four patterns which are estimated. Four patterns are punching shear failure of slab at critical area, tensile failure of upper surface of slab, compressive failure of support, and buckling failure of support. Using the finite element method, four different failure patterns are simulated and results are analyzed From the result we proposed appropriate space of support staging system.
노후 콘크리트구조물의 리모델링 공사시 Slab지지 동바리의 적정간격 산정을 위한 해석적 연구
박준석(Park, Joon-Seok),최훈(Choi, Hoon),남정훈(Nam, Jeong-Hun),윤순종(Yoon, Soon-Jong) 한국구조물진단유지관리학회 2009 한국구조물진단학회 학술발표회논문집 Vol.2009 No.1
In this paper, we present the analytical study results pertaining to the determination of appropriate the space of slab support staging system and load carrying capacity for the remodeling of deteriorated concrete structure. As loads are applied on the slab gradually, slab support staging system may be failed in four patterns which are estimated. Four patterns are punching shear failure of slab at critical area, tensile failure of upper surface of slab, compressive failure of support, and buckling failure of support. Using the finite element method, four different failure patterns are simulated and results are analyzed. From the result we proposed appropriate space of support staging system.