흰쥐중심편도체핵에서 Neurotensin 면역양성세포의 다리옆핵으로의 투사

박인식,최정화,박봉수,백선용,김봉선,김재봉,김진정 대한해부학회 1996 Anatomy & Cell Biology Vol.29 No.2

익수환아의 예후에 영향을 미치는 인자에 관한 연구

김용배,정대봉,조수형,조남수,박영봉,박상기,김춘호,양은석,문경래 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.3

Drowning is the second most common cause of accidental death of children in Korea. But the study of near-drowning is very rare in Korea. The purpose of our study is to determine the factors that may influence survival on the basis of submersion time, consciousness state upon admission to hospital, the kinds of water, laboratory findings and neurological outcomes. The survey was performed by a retrospective cohort study on 28 near-drowning victims of less than 15 years of age who were admitted to the emergency room in the Chosun University Hospital between May 1988 & May 1997. The results were as follows :1)Sex distribution was 22 males and 6 females. 2) Submersion time was <5 minutes in 9 cases, 5-9 minutes in 6 cases, 10-14 minutes in 5cases, 15-19 minutes in 3 cases, ≥20 minutes in 5cases. 3) Comatose patients upon arrival were 6/7 cases in the death group(86%) and 2/21 cases in the improved group(10%). They had unfavorable outcomes(P<0.05). 4) The first PH value was mean 7.02±0.12 in the death group and mean 7.31±0.13 in the improved group. There was a statistically significant difference between the death and the improved group(P<0.05) 5) The patients who gad increased blood glucose concentration were all 7 cases in the death group and 12/22 cases in the improved group(54%). The mean blood glucose concentration was mean 424.7235.6㎎/㎗ in the death group and mean 140.182.7㎎/㎗ in the improved group. There was a statistically significant difference between the death and the improved group(P<0.05). 6) The patients who had pulmonary edema upon arrival were all 7 cases in the death group and 1/21 cases in the improved group(46%). They had unfavorable outcomes(P<0.05). 7) The patients who had been submerged more than 15 minutes were all 7 cases in the death group and 6/21 cases in the improved group(5%). They had unfavorable outcomes(P<0.05). We conclude that pediatric victims of near-drowning can be assigned to high or low likelihoods of unfavorable our outcomes with the use of five variables ; comatose mentation upon arrival decreased initial blood pH, increased initial blood glucose concentration, pulmonary edema, and maximum submersion time estimated longer than fiften minutes. This prediction rule may be useful if it can be validated in another cohort.

백일주 양조중 맛성분의 변화

박석규,박필숙,손봉수,문주석 순천대학교 기초과학연구소 1993 基礎科學硏究誌 Vol.4 No.-

Changes in taste components of Backilju, an old Korean cleraed rice wine, were investigated. During brewing, pH and titratable acidity of mash were decreased or increased in the range of 3.41→3.81 and 8.62→6.74, respectively. The final product of Backilju filtrate, fermented for 100 days, contained 0.36% reducing sugar, 2.68% total sugar, 606.6 ㎎% total acid, 2.5 ㎎% volatile acid and 22.9㎎ solid/ml extract. Major volatile components analized by GC/MS methods were 3-methyl-1-butanol acetate, 4-decanol and dimethyl disulfide. Calcium(20.26ppm) was the most abundant, followed by magnesium(3.19ppm) and zinc(1.87ppm). Nucleotides and their related compounds were inosine(0.12→0.44 mM/ml), ADP(0.16→0.33 mM/ml) and hypoxanthine(0.33→0.04 mM/ml). Compared with other Korean traditional Yakju, Backilju contained more total acid and mineral but less sugar and volatile acid.

에어-오일 윤활에 의한 공작기계 주축계의 고속화연구

朴京鎬,崔大奉,金洙泰 國立 昌原大學校 産業技術硏究所 1992 産技硏論文集 Vol.6 No.-

According to the development of cutting tools, the high speed of machine tool's spindle is needed, and the demands for the precision machining, the improvement of light materials' productivity and etc. are increased. The spindle of machine tool with the maximum speed, ??·N, has lately been used and that over ??·N has been studied in advanced countries. In the country, the study on this field is needed because the spindle with the speed,??·N, is used up to now. Therefore, the study is carried out for the high speed spindle design, the lubrication system and the development of spindle unit.

조루증의 치료에서 Paroxetine의 효과와 부작용

박광성,이재규,윤진상,권동득,오봉렬,류수방,박양일 全南大醫大 2001 전남의대학술지 Vol.37 No.1

검사자에 따른 동공간거리 측정값의 오차에 관한 분석

박수봉 ; 이채호 ; 이상덕 김천대학교 2003 김천대학교 논문집 Vol.24 No.-

The purpose of this study was to determine repeatability of measure- ments of interpupillary distance. We measured far interpupillary distance and near interpupillary dis- tance at fixation distance of 40cm with a millimeter ruler and Shinnippon PD-82 corneal reflection pupillometer. The difference of measurements of IPD by a pupillometer and a ruler is little, and reproducibility by a pupillometer is better than by a ruler.

노안가입도에 따른 다초점렌즈 착용선호도 연구

박수봉 김천대학교 2003 김천대학교 논문집 Vol.24 No.-

Fifteen subjects were fitted with progressive additional lens and they were divided into 3 groups. The first group had never worn add for reading before and their adds ranged between +1.00 - +1.50D. The second group made up of wearers who had been wearing a standard from of bifocal before switching to progressive additional lens and their adds fell in the +1.75 to +2.00D range. The third group comprised subjects who had been wearing a standard form of bifocal before choosing the progressive lens and their adds utilized a +2.25 to +2.50D. After wearing identical near power in blended bifocal, 13 subjects preferred to wear the progressive additional lenses. The second experiment subjects were 20 people and had never worn pro- gressive lens before. The first group whose add ranged between +1.00 and +1.50D. 4 of 6 had never worn adds for reading before. Eight subjects com- prised a group whose add powers fell in the +1.75 to +2.00D range. Only one of these had not worn some addition for near before. The final 6 required adds of +2.25 and +2.50 and had been wearing a near point addition for some time. Some tried the blended lenses first and then the progressive lenses while some wore the progressive lenses before the blended. 15 chose the progres- sive additions, with two selecting blended lenses and 3 returning to a stan- dard form. The experiment reveals that given any opportunity to compare the optical aspects of both blended bifocals and progressive addition lenses, the over-whelming propotion of subjects selected a progressive addition lens. A blended bifocal, despite the fact that it also caters to cosmetic favor through its invisibility is not an actual substitute for or replacement of a progressive addition lens insofar as apparent optical features and patient comfort and preference is concerned.

광통신용 분배기 제작기술 개발

朴秀峰 東新大學校 1996 論文集 Vol.8 No.-

In this paper, we developed an optical distribution device for the application of an optical switching and an optical subscriber loop. To approach this objective, we fabricated thin film by LPCVD, simulated dispersion property to be a single-mode after rib-type optical waveguide of three-dimension had approximated to two-dimension by an effective refractive index method. By BPM simulation, we found that an optimal condition of rib-type waveguide is core width of 4㎛ when etched by 4㎛ under 3㎛ of cladding layer, 3㎛ of core layer, 10㎛ of buffer layer. As a result for designing the Y-branch with optical distribution function using this condition, we found that the loss in branching area equivalent for 3000㎛-6000㎛ to z-axis direction is 0.1581dB. Also, it is clear that the waveguide mode of fabricated Y-branch is single mode. In the cases of connecting Y-branch after fixing optical fiber by fabricated V-groove and firming by inserting of index matching oil after fixing, the coupling loss was 0.34dB and 0.14dB respectively.

개의 하악에서 막성골 중첩이식후 신연골 형성에 관한 연구

박세정,이동훈,이정형,조병채,백봉수 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3

The purpose of this study was to investigate the possibility of distraction osteogenesis in membranous onlay bone graft on the mandible and to clarify the histology of bone repair during distraction osteogenesis in the membranous onlay bone in a dog model. Four dogs, 5 months of age at the beginning of the experiment, were used for this study. The zygomatic arch was exposed in the subperiosteal plane and the full-thickness zygomatic arch was harvested to 3 centimeters in length. The lateral surface of the mandibular body was exposed in the subperiosteal plane and the membranous onlay bone graft was performed with firm contact using screws. The osteotomy on the membranous onlay bone graft and underlying mandibular body was carried down week 1 in dog 1, week 2 in dog 2, week 3 in dog 3, and week 4 in dog 4 after membranous onlay bone graft. The external distraction device was applied to the mandibular body. Mandibular distraction was started 7 days after the operation at a rate of 1mm per day for a total of 10 mm distraction over 10 days. After completion of distraction, the distraction device was left in place for 6 weeks bony consolidation of the distracted area. Radiographs were carried out at 2 weeks, 4 weeks and 6 weeks after distraction. New bone between the native underlying mandibular segments was generated in the distracted zone in all dogs. The new bone between the native underlying mandibular segments was generated in the distracted zone in all dogs. The new bone between segments of membranous onlay bone graft was not generated in dog 1, but it was generated in dogs 2, 3 and 4. However, in dog 2 and 3, the new bone between segments of the distracted membranous onlay bone graft presented less firmness with fibrous tissue than that of the native underlying mandibular segment. Histologically, the distracted gap between segments of the membranous onlay bone graft was composed of much fibrous tissue in the central zone while activated osteoblastic cells formed new bone in the margins of the distracted gap in dogs 2 and 3. In dog 4, there were abundant osteoblastic activities in the distracted gap and the new bone appeared as nearly-normal cortical bone. In conclusion, these findings suggested that membranous onlay bone graft had an osteogenic capacity and that distraction osteogenesis was possible in membranous onlay bone graft.

최적의 다층신경망을 이용한 영상 검색 알고리즘

박수봉 東新大學校 1999 論文集 Vol.11 No.-

In this paper, we propose a image search algorithm using back-error propagation learning based on WMRV. We capture images of 256×256 size with gray scale 256 levels from input images which were having monotonous background in the condition of same lumination and distance. After removing noises with a pre-processing process and edge detection, we detect a characteristic region. From this region we extract characteristic vectors using DCT(Discrete Cosine Transform). In case of human face image, we could see edge lineaments are distributed eye brows and a eyes in large numbers. Using this feature we detect a square area including eye brows, eyes, a nose, and a mouse which were contained most of human face information. And we use this square area as input data for multilayer neural network so that recognize a human face after learning process. In DCT processing with a square area which were extracted, the calculation time was reduced 49% than processing of entire facial image. Through simulation results, it shows many improvement in convergence speed. After simulation for 30 persons with 10 images per person(total 300 images), we proved 100% of recognition rate and shows 94% recognition rate for 50 persons which weren't learned by multilayer neural networks.