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민승기,이은택,오승환,이동근,고세욱,송종민,최성림 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.3
The Orbital fracture which is often combined with midface fracture can cause decreased visual acuity, limitation of eyeball movement, diplopia, enophthalmos, etc. Traumatic orbital fracture causes change of orbital volume, results in diplopia and enophthalmos thus, accurate repositioning of displaced bone and reconstruction of orbital defect with autogenous materials(cranial, rib, iliac bone, cartilage and fascia lata) or alloplastic materials(gelatin film, polyglactin mesh, methylmethacrylate, Teflon, silicone, Supermid, hydroxyapatite and metal). The key point of reconstruction of orbit is accurate repositioning of displaced orbital floor, lateral, medial orbital wall and sufficient bonegraft in anatomical defect. As this cases, we obtained good results through transconjunctival and coronal approach who were required orbital reconstruction. Also, we accurately diagnosed orbital fracture with C.T., 3D model and good result for orbital reconstruction with sufficient parietal block bone graft during average 16.8 months follow-up.
Chitosan 처리가 청어 Fillet 저장 중 품질에 미치는 효과
양승택,박상우 慶星大學校 1999 論文集 Vol.20 No.2
To elucidate the effects of low viscosity chitosan (15 cps, 1% solution) on the shelf-life of herring (Clupea pallasi) fillet packaged with air and vacuum during storage at 4℃, 20℃ and -20℃, moisture, pH, K-value, volatile basic nitrogen (VBN), viable cell counts and peroxide value (POV) were determined. From the results of this experiment, good qualities of the samples with air and vacuum packaging stored at 4℃ were maintained at least for 3 days (control ; one day in air) and for 7 days (control ; 3 days in vacuum), and those of the samples stored at -20℃ were 90 days (control ; 80 days in air, 90 days in vacuum), while those of the samples stored at 20℃ were one day (control ; less than one day in air, one day in vacuum).
흰 쥐 모델에서 지연재식 시 dexamethasone과 OP-1의 표면처리가 치주조직 재생 및 항흡수 작용에 미치는 효과
권오택,금기연,이승종 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.4
본 연구를 종합하면 통계학적인 유의차는 없었으나 OP-1에 비해서는 DEX로 처치한 군에서 더 많은 골유합이 나타났으며 고농도의 OP-1으로 처치한 군에서는 골유합 없이 치주재생이 일어나는 부위가 많이 관찰되었다. 그러나 차후에는 DEX나 OP-1이 치주조직 내의 어느 세포에 어떠한 기전으로 작용하는지 분자생물학적인 방법을 통하여 규명하고 이를 토대로 치주인대의 손상 후 야기되는 골성 유합을 줄이는 효과적인 치료약제나 방법을 개발하는 연구가 계속적으로 이루어져야 할 것으로 사료되며 6주 이상의 재식기간 후 각 약제의 조직학적 반응을 평가하기 위한 실험도 추가되어야 할 것으로 사료된다. 태생 40일 된 Spray-Dolwey계 흰 쥐의 상악 제1대구치를 발거하고 30분간 자연건조시킨 뒤 MB치근을 Caviton으로 근관충전하고 MB 치근표면에 DEX와 OP-1을 농도를 달리하여 도포한 후 재식하고 3주후 골 및 백악질의 재형성과 치주재생 및 치근 흡수 방지효과를 관찰한 결과 고농도의 OP-1이 조직학적인 관찰에서 치근흡수, 골성 유합 및 염증 정도에서 가장 우수한 결과를 보여주었고 치주 재생능력 면에서도 가장 뛰어난 것으로 나타났으나 추후에는 6주 이상의 장기관찰 후 각 약제의 조직학적 반응도를 평가하기 위한 실험이 추가되어야 할 것으로 사료된다.
전갱이 조미 반건조제품의 4±0.5℃ 저장 중 품질안정성
양승택,박상우,이현숙 慶星大學校 1998 論文集 Vol.19 No.1
This study was carried out to examine the keeping quality of seasoned and semi- dried horse mackerel during storage at 4±0.5℃ by analyzing the factors such as water content, pH, volatile basic nitrogen, viable cell count, extractability of saline soluble protein, peroxide value, color value and sensory evaluation. The shelf-life of the products, vacuum packaging method in nylon/polyethylene/linear low density polyethylene(0.015/0.045/0.04㎛) film bag, was 21 days during storage at 4±0.5℃, while that of unpackaged one was 14 days.
좌승택,오성보 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.2
School illumination with full volume of light and adequate brightness is designed to help students better focus on their education and produce an optimum atmospnere where students can apply their utmost to learning. This paper present to study actual illumination environment of schools in order to figure out illumination prolems. Furthermore. it attempts to suggest an optimum design for schoolroom illumination through computer simulation to attain qualitative improvement effect in school illumination under the illuminaion plan which is based on illumination maintenance and uniformity ratio that K.S. illumination standard sets.
중안면부 골절이 하악 과두 골절에 미치는 영향에 관한 임상적 연구
민승기,이동근,오승환,이은택,조이수,김종구 大韓顎顔面成形再建外科學會 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.6
This is clinico-statistical & retrospective study of 30 patients with only unilateral mandibular condyle fracture and combined with 24 midface fracture patients who were treated with open reduction in Wonkwang University Dental Hospital during the period 1993 to 2000. The results were as follows : 1. In mandibular condyle fracture combined with midface fracture, the most incident type is associated with zygomaticomaxillary complex fracture and level Ⅳ of mandibular condyle fracture combined with ZMC fracture is the most related(33.32%). 2. In the period of intermaxillary fixation, unilateral mandibular condyle fracture group (9.8 days) is shorter than combined with midface fracture group (15.3 days), but no statistical difference between two groups(p.>0.05). 3. In the mouth opening recovery, unilateral mandibular condyle fracture group is faster than combined with midface fracture group in post-operative 1 month, but no significant difference between two-groups after 3 months postoperatively (p>0.05). 4. In two-groups, treatment method is almost open reduction with internal fixation(ORIF) and overall 25% temporary complications were shown, but little lower incidence in unilateral condylar fracture group.
양승택 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.S2 No.2
To investigate the possibility of processing boiled and hot air dried loach and to examine its keeping guality, the factors such as moisture content, pH, volatile basic nitrogen (VBN), peroxide value (POV), acid value (AV), viable cell counts, color value and texture were analyzed. For processing of the boiled and dried loach, optimum conditions of drying temperature and drying time were 60℃ and 5 hr, respectively. The shelf-life of the products, vacuum-packing method in nylon/polyethylene/linear low density polyethylene (0.015/0.045/0.040 mm) laminated film bag, was of least 35 days during storage at 4℃, while that of air packaged one was at least 30 days. In case of 20℃ storage the shelf-lives of the products were at least 30 days and 25 days in vacuum and air packaged ones, respectively.