http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
고령에서 발현한 척수외 혈관모세포종 - 증 례 보 고 -
김영우,김재건,유도성,허필우,조경석,김달수,강준기,Kim, Young Woo,Kim, Jae Keon,Yoo, Do Sung,Huh, Phil Woo,Cho, Kyuong Suck,Kim, Dal Soo,Kang, Joon Ki 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.2
Intradural extramedullary hemangioblastoma of the spinal cord is uncommon tumor. Symptom onset is typically in the forth decade. Complete excision offers the best chance for cure. We report a case of extramedullary hemangioblastoma of the spinal cord in old age. A 76 -year old man presented with 1 month history of paraparesis. Multiple enhancing lower thoracic and lumbar spinal masses were seen on magnetic resonance imaging(MRI). Surgical exploration for symptomatic lesion revealed intradural-extramedullary mass, which had hypervascularity. The excised spinal masses were diagnosed as hemangioblastoma. Postoperative course was uneventful and symptoms improved gradually.
AlN-Al<sub>2</sub>O<sub>3</sub> 계에서의 상압소결 질화물복합체
김영우,김규헌,김동현,윤석영,박홍채,Kim, Young Woo,Kim, Kyu Heon,Kim, Dong Hyun,Yoon, Seog Young,Park, Hong Chae 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.5
Particulate nitride composites have been fabricated by sintering the compacted powder of AlN and 5 - 64.3 mol% $Al_2O_3$, with a small addition of $Y_2O_3$ ($Y_2O_3$/AlN, 1 wt%), in 1-atm nitrogen gas at $1650-1900^{\circ}C$. The composites were characterized in terms of sintering behavior, phase relations, microstructure and thermal shock resistance. AlN, 27R AlN pseudopolytype, and alminium oxynitride (AlON, $5AlN{\cdot}9Al_2O_3$) were found to existin the sintered material. Regardless of batch composition, the AlN-$Al_2O_3$ powder compacts exhibited similar sintering behavior; however, the degree of shrinkage commonly increased with increasing $Al_2O_3$ content, consequently giving high sintered bulk density. By increasing the $Al_2O_3$ addition up to ${\geq}50 mol%$, the matrix phase in the sintered material was converted from AlN or 27R to AlON. Above $1850^{\circ}C$, a liquid phase was formed by the reaction of $Al_2O_3$ with AlN, aided by $Y_2O_3$ and mainly existed at the grain boundaries of AlON. Thermal shock resistance was superior in the sintered composite consisting of AlON with dispersed AlN or AlN matrix phase.
김영우,유도성,김달수,허필우,조경석,김재건,강준기,Kim, Young-Woo,Yoo, Do-Sung,Kim, Dal-Soo,Huh, Pil-Woo,Cho, Kyung-Suck,Kim, Jae-Gun,Kang, Joon-Ki 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.2
Objective : Cranioplasty is required to protect underlying brain, to correct major aesthetic deformities, or both. The ideal material for this purpose is autogenous bone. When this is not available, alloplastic or artificial materials may be used. In this study authors compared the infection rate according to the cranioplasty materials(the frozen autologous bone vs. bone cement), and duration of the skull defect. Materials : Between May 1994 and December 1999, 111 patients with skull defect treated with cranioplasty(82 cases of frozen autologous bone and 29 cases of artificial bone material) were included in this study. There were 77 males and 34 females with a mean age of 41.4 years(range 1-85 years). 57 patients had head trauma and 54 had non-traumatic insults. According to the duration of skull defect, there were 28 cases under 1 month, 33 cases of 1-2 months, 15 cases of 2-3 months, 20 cases of 3-6 months and 15 cases over 6 months of duration. Results : Overall infection rate was 9.9%. In cases with frozen autologous bone and artificial bone material, the infection rate was 8.5% and 13.7%, respectively. The infection rate according to the duration of skull defect was 3.6%(among 28 cases) under 1 month of age, while those were 12%(4 among 33 cases) at 1-2 months, 20%(3 among 15 cases) at 2-3 months, 5%(1 among 20 cases) at 3-6 months and 13%(2 among 15 cases) over 6 months. Accoring to the underlying disease, the infection rate in traumatic cases was 12%(7 among 57 cases) and that in non-traumatic one was 3.7%(2 among 54 cases). Conclusion : From this study, it appears that skull defect should be repaired as soon as possible, because early cranioplasty can lower the infection rate. And surgeons could save the patients' cranial bone as possible as they can because autologous bone is not only cost effective in cosmatic purpose but lower the infection rate.
사상체질진단기준(외모 심성 병증)의 중요도에 대한 연구
김영우,이의주,최선미,정성일,이영옥,조훈석,김종원,Kim, Young-Woo,Lee, Eui-Ju,Choi, Sun-Mi,Jung, Sung-Il,Lee, Young-Ock,Jo, Hun-Seok,Kim, Jong-Won 사상체질의학회 2003 사상체질의학회지 Vol.15 No.3
Purpose: This study had focused on evaluating the QSCC II for the elevating accuracy and the designing new Questionnaire. Methods : QSCC II was administered to 1051 patients who had been treated in the Dong Eui Oriental Medical Hospital and Kyung Hee Oriental Medical Hospital during 19 months from sept. 2000 to mar. 2002. We analyzed all subjects of the QSCC II. Result: 1. In the analysis with all subjects of the QSCC II ,1-1. 75 subjects had a significance between the Sasang Constitution groups. 1-2. In each Sasang Constitution group, we was able to select some significant subjects. I had selected 34 subjects in the Taeyang scale, 33 subjects in the Soyang scale, 28 subjects in the Taeeum scale, and 23 subjects in the Soeum scale. 1-3. When I applied the new intensifying value and calculation, the diagnostic discrimination abilities of the QSCC II was 61.8% about Taeyangin, 55.9% about Soyangin, 63.8% about Taeeumin, 63.6% about Soeumin, and total average was 61.8%.
열분석법에 의한 Mg-8.5Li-4.5Al합금의 시효거동 연구
김영우,황영하,박태원,김도향,홍준표 ( Y . W . Kim,Y . H . Hwang,T . W . Park,D . H . Kim,C . P . Hong ) 한국열처리공학회 1997 熱處理工學會誌 Vol.10 No.4
Precipitation and strengthening mechanisms in squeeze cast Mg-8.5wt%Li-4.5wt%Al have been investigated by differential scanning calorimetry(DSC), scanning electron microscopy(SEM), in-situ and ex-situ X-ray diffraction analysis and hardness measurement. Special emphasis was placed on the investigation of the precipitation behavior by the DSC technique. Microstructural and calorimetric analysis showed that θ and δ precipitates in the b.c.c. β phase matrix, forming two exothermic peaks at the temperature ranges of 130℃∼180℃ and 236℃∼280℃. θ and δ dissolve into the matrix forming an endothermic peak at the temperature range of 280℃∼352℃. The as-cast microstructure consists of α, β and δ. Peak strength was obtained after aging for 1 hour at 50℃. The aging time required for the peak strength decreased as the aging temperature increases. The hardness decrease during overaging was due to the coarsening of θ precipitates. Microhardness measurement showed that variation of the hardness of β matrix was more pronounced than that of the α phase, indicating that the β phase is more responsible for the strengthening of the Mg-8.5wt%Li-4.5wt%Al alloy.