2형 오브스캔 각막지형도를 이용한 원추각막과 원추각막의증의 각막형태비교

이승욱,이창환,이지은,이종수,Seung Uk Lee,Chang Hwan Lee,Ji-Eun Lee,Jong Soo Lee 대한안과학회 2007 대한안과학회지 Vol.48 No.12

Purpose: To compare corneal topographic changes using Orbscn II between keratoconus and keratoconus- suspected eyes. Methods: Thirty-seven keratoconus eyes, 17 keratoconus-suspected eyes and 37 normal eyes were evaluated by using Orbscan II corneal topography. We compared central phachymetry, anterior elevation from best-fit sphere (BFS), posterior elevation from BFS, most protruded corneal thickness, central corneal thickness, anterior chamber depth, corneal diameter, and pupil size. Results: Central pachymetry, anterior and posterior elevation from BFS, central corneal thickness, and anterior chamber depth were statistically significantly different between keratoconus and control eyes. Anterior elevation from BFS showed a significant difference between keratoconus-suspected and control eyes. There were statistically significant differences in central pachymetry, posterior elevation from BFS, central corneal thickness and most protruded corneal thickness between keratoconus and keratoconus-suspected eyes. Corneal diameter and pupil size showed no differences among the 3 groups. Conclusions: Suspected keratoconus eyes have a higher value of anterior elevation from BFS on Orbscan II topography as compared with control eyes. Central pachymetry, posterior elevation from BFS, central corneal thickness and most protruded corneal thickness may be helpful in distinguishing between keratoconus and keratoconus-suspected eyes.

눈물길 신티그라피의 양상에 따른 실리콘관 삽입술의 치료효과 비교

이승욱,김은희,이지은,이종수.Seung Uk Lee. M.D.. Eun Hee Kim. M.D.. Ji Eun Lee. M.D.. Jong Soo Lee. M.D. 대한안과학회 2006 대한안과학회지 Vol.47 No.6

Purpose: To evaluate clinical outcome of silicone tube intubation in lacrimal passage obstruction according to the lacrimal passage obstruction patterns by dacryoscintigraphy. Methods: Fifty-nine eyes of 52 patients complaining of epiphora were divided into three groups pre-sac (group 1), intra-sac (group 2), and intra-ductal (group 3) types by dacryoscintigraphy. We confirmed the obstructive sites of lacrimal passage by probing with Bowman probe, and excluded all the cases of not passing lacrimal pathway or without the obstruction of lacrimal pathway. In the silicone intubation, a tie between both silicone tube was made at silicone silastic sheet instead of Mersilk. Results: The success was defined as maintaining the patent lacrimal passage with irrigation and disappearing of epiphora for at least 3 months. The success rate of the silicone intubation was 16 eyes of 17 eyes (94.1%) in group 1, 19 eyes of 23 eyes (82.6%) in group 2, and 14 eyes in 19 eyes (73.7%) in the group 3. The highest success rate of silicone intubation was pre-sac type and the lowest success rate was intra-ductal type by dacryoscintigraphy. There is no significant difference of success rate among three groups. Conclusions: Although it`s required the longer follow-up period and larger subjects to evaluate the efficacy of silicone tube intubation, it should be useful management of silicone tube intubation, especially at the cases of pre-sac obstruction by dacryoscintigraphy.

차세대 e-러닝 서비스-e-러닝 시스템을 중심으로

이승욱,김용훈,서희전,김진호,문경애,Lee, S.W.,Kim, Y.H.,Seo, H.J.,Kim, J.H.,Moon, K.A. 한국전자통신연구원 2005 전자통신동향분석 Vol.20 No.4

IT 기술을 이용하여 학습하는 것을 e-러닝이라 한다. 최초의 e-러닝은 DistanceLearning과 Distributed Learning이라는 두 가지 측면만으로도 훌륭한 역할을 하였다. 그러나 최근 정보통신산업의 비약적인 발전에 따라 새로운 e-러닝 서비스에 대한 사용자의 요구가 높아지고 있다. 무선 이동통신기술과 하드웨어기술 등의 발전에 따라 언제 어디서나 양질의 교육에 접근할 수 있고, 멀티미디어 처리기술의 발전에 따라 개인맞춤형 e-러닝 서비스가 필요하다. 이에 따라 본 기고에서는 e-러닝 시스템이라는 측면에서 차세대 e-러닝 서비스를 구상하고자 한다.

꿀벌부채명나방[Galleria mellonella (L.)] 사육을 위한 경제적 인공사료 개발

이승욱,이동운,추호렬,Lee, Seung-Wook,Lee, Dong-Woon,Choo, Ho-Yul 한국응용곤충학회 2007 한국응용곤충학회지 Vol.46 No.3

본 연구는 꿀벌부채명나방의 경제적 사육을 위한 인공사료 개발을 위하여 수행하였다. 가격이 비싼 벌꿀을 대체하여 물엿과 설탕을 이용한 사료별 꿀벌부채명나방의 발육과 발육기간 및 산란수, 성충 수명 등을 조사하였다. 당 종류별 유충의 두폭과 체장은 비슷하였으나 체중은 1/2벌꿀 + 1/2물엿 처리가 255.5 mg으로 가장 무거웠고, 설탕은 144.3 mg으로 가장 가벼웠다. 꿀벌부채명나방 번데기의 체중도 1/2벌꿀+1/2물엿이 196.7 mg으로 가장 무거웠다. 당 종류별 꿀벌부채명나방의 유충 발육기간은 벌꿀이 포함된 사료가 30.9일로 가장 짧았으며 설탕은 36.5일로 가장 길었다. 꿀벌부채명나방의 용화율과 우화율은 79.3% 이상이었다. 모든 사료에서 꿀벌부채명나방의 교미 성충의 수명은 암컷이 $6.3{\sim}8.0$일이었고, 수컷은 $7.9{\sim}11.2$일이었다. 사료별 꿀벌부채명나방 암컷 성충의 산란수는 설탕물 첨가 사료에서 1,269개로 가장 많았다. 당 종류별 인공사료 조성에 대한 비용은 밀기울이 쌀겨보다 10배 정도 많았으며, 벌꿀은 물엿과 설탕의 6배와 13배였다. This research was carried out to develop economical artificial diets of the greater wax moth, Galleria mellonella (L.). Diets were mixed with malt or sugar instead of whole honey for cheaper ones. fecundity, developmental period, pupation rate, emergence rate and adult longevity of G. mellonella depending on diet were examined. The head width and length of larvae were not significantly different among diets tested. However, the weight of larva was the heaviest, 255.5 mg, at 1/2 honey + 1/2 malt diet and lightest, 144.3 mg, at sugar diet. The weight of pupa was also the heaviest at 1/2 honey + 1/2 malt representing 196.7 mg. Larval period was the shortest at honey diet as 30.9 days but the longest at sugar diet as 36.5 days. Pupation and emergence rates were over 79.3% at all diets. The longevity of mated females was ranged from 6.3 to 8.0 days and those of mated males ranged from 7.9 to 11.2 days. The highest number of eggs, 1269, was obtained at sugar diet. Artificial diets replaced by rice bran, malt, and sucrose reduced costs compared with wheat bran plus honey diet. The cost of rice bran was only 10% of wheat bran. Honey was much more expensive than malt and sugar, that is 6 and 13 times, respectively.

2002년도 IEC 규격 제정 동향

이승욱,Lee, Seung-Uk 한국전자정보통신산업진흥회 2003 電子振興 Vol.23 No.3

IEC(국제전기기술위원회) 운영동향 및 활동현황

이승욱,Lee, Seung-Uk 한국전자정보통신산업진흥회 2002 電子振興 Vol.22 No.9

디지털콘텐츠 - 3D 그래픽스 압축 기술 및 표준화 동향

이승욱,Lee, Seung-Uk 한국정보통신기술협회 2012 TTA저널 Vol.144 No.-

IEC 100주년과 한국의 표준화

이승욱,Lee, Seung-Uk 기술표준원 2006 기술표준 Vol.51 No.-

재래식 및 개량식 된장의 아이소플라본 분포 및 $\beta$-glucosidase 활성 연구

이승욱,박영우,장판식,이재환,Lee, Seung-Wook,Park, Yong-Woo,Chang, Pahn-Shick,Lee, Jae-Hwan 한국식품과학회 2010 한국식품과학회지 Vol.42 No.2

숙성기간이 다른 재래식 된장 12종과 개량식 된장 4종의 아이소플라본과 $\beta$-glucosidase 활성도를 비교하였다. 재래식 된장의 전체 아이소플라본 함량(TI)은 $370-723\;{\mu}g/g$이었고, 개량식 된장은 $179-537\;{\mu}g/g$으로 유의적으로 낮은 함량을 보였다. 된장의 주요 아이소플라본은 비배당체 형태였으며 재래식 된장의 경우 42.98-89.96%, 개량식 된장은 35.51-93.48%이었다. 아이소플라본 함량 분포에 대한 주성분 분석 결과 재래식 된장은 개량식 된장과 차별화가 가능하였다. 개량식 된장의 경우 $\beta$-glucoside 형태는 검출되지 않았는데 이는 과도한 열처리를 받았거나 발효에 관여한 미생물의 $\beta$-glucosidase 활성이 높았음을 의미한다. 된장시료에서 $\beta$-glucosidase 활성도는 날콩에 비해 낮았으며 재래식 및 개량식 된장간에 유의적인 차이 및 아이소플라본의 분포와의 상관관계는 명확하지 않았다. Isoflavone distribution and $\beta$-glucosidase activity in 16 commercially available doenjang samples were determined. Twelve of the samples were home-made doenjang (HMD) with a relatively long fermentation period and 4 of the samples were factory-produced doenjang (FPD) from four different manufactures. Total isoflavones (TI) in the HMD ranged from $370-723\;{\mu}g/g$, while those in FPD ranged from $179-537\;{\mu}g/g$. The isoflavone distribution in HMD was different from those in FPD. Generally, the TI in HMD was higher than those in FPD. The major isoflavone was aglycones, which ranged from 42.98 to 89.96% in HMD and from 35.51 to 93.48% in FPD. Isoflavones in the $\beta$-glucoside forms were not detected in tested FPD samples. Principal components analysis (PCA) of the isoflavone profiles showed that HMD were differentiated from FPD. First principal component (PC1) and second principal component (PC2) expressed 43.6 and 22.9% of the data variability, respectively. $\beta$-Glucosidase activity in doenjang was lower than that in raw soybeans. The results of this study can be used to understand the differences in the isoflavone distribution in traditionally manufactured and factory produced doenjang.

경도의 발달장애 아동의 시지각 및 주의력 향상을 위한 시기능 훈련의 임상사례

이승욱,장우영,Lee, Seung-Wook,Jang, Woo-Yeong 한국임상보건과학회 2017 한국임상보건과학회지 Vol.5 No.3

Purpose. The purpose of this study was to investigate the effect of visual field training on visual function, visual perception and attention enhancement. Methods. We examined the changes of visual function and visual perception tests for children with mild developmental disabilities through vision therapy. Results. At the time of the initial visit of the child, the ability to control not only distant and near visual function, but also accommodation, was also very limited. Also, the visual perception score was measured at 80 points. Through vision therapy, it was confirmed that the improvement of control ability as well as the visual function and visual perception function test results were also improved to 108 points. Conclusion. It was confirmed that vision therapy results in an improvement of visual function, improved visual perception ability, as well as visual perception ability, It was concluded that visual function affected visual perception, and that vision therapy used in order to prevent visual function deterioration was found to be very helpful.