반맹에서 반시야 문양 시유발전위와 빛간섭단층촬영과의 일치성

박성용,박상혁,하승주,박성희,Sung Yong Park,Sang Hyouk Park,Seung Joo Ha,Song Hee Park 대한안과학회 2008 대한안과학회지 Vol.49 No.11

Purpose: To analyze the correlation between RNFL thickness changes measured by OCT and hemifield pattern VEP in hemianopic visual field loss. Methods: Twelve eyes of six patients with hemianopia were studied. Two patients had bitemporal hemianopia caused by chiasmal tumor, one patient had inferior hemianopia caused by traumatic optic neuropathy, and three patients had homonymous hemianopia caused by occipital lobe lesions. The retinal nerve fiber layer thickness around the optic disc was measured by optical coherence tomography (OCT) and visual pattern evoked potentials were measured using hemifield stimulations. Results: Normal eyes of traumatic optic neuropathy patients were excluded from the analysis. The retinal nerve fiber layer thickness as measured by OCT corresponded to the visual field defect in 9 of 11 eyes (81.8%) and the hemifield pattern VEP response corresponded to visual field defect in 7 of 11 eyes (63.6%). Conclusions: RNFL thickness measurement by OCT and hemifield PVEP are useful in evaluation of patients with hemianopia. However, they should be performed with caution, and compared with various clinical examinations because of their incomplete correlation with visual field defects. J Korean Ophthalmol Soc 2008;49(11):1819-1828

화산력-시멘트 혼합 바이오 블록의 미생물 생장 특성

박성용,박덕환,김현선,김정면,임현택,배수빈,김용성,Park, Sung-Yong,Park, Duck-Hwan,Kim, Hyun-Sun,Kim, Jung-Myeon,Lim, Hyun-Taek,Bae, Su-Bin,Kim, Yong-Seong 한국농공학회 2015 한국농공학회논문집 Vol.57 No.1

This research aims to utilize lapilli from the Mt. Baekdusan as environmently-friendly construction material. First of all, the neutralizing method for fabricating lapilli-cement-mixed bioblock was examined. And then, by use of the neuralized bioblock with microorganism for water purification, the growth inhibition effect against the pathogenic coliform bacillus was evaluated. The result regarding growth inhibition effect on pathogenic coliform bacillus indicates that the pretreatment condition, which is a concurrent procession with aqueous solution of 10% di-ammonium Phosphate after water curing, led to pH degraded below 10 which was the target value. Therefore it was concluded that the method was effective on bio-block neutralization. The microorganisms purifying water and di-ammonium phosphate were detected through the examination for microorganism existence on the bioblock, therefore it was concluded that the bioblock composed of lapilli and cement is able to be utilized in various structures as an environment friendly construction material.

어항의 해양경찰 서비스 표준 모델 개발을 위한 기초 연구

박성용,이은방,주종광,진성용,Park, Seong-Ryong,Lee, Eun-Bang,Ju, Jong-Kwang,Jin, Sung-Yong 해양환경안전학회 2009 海洋環境安全學會誌 Vol.15 No.1

중 소형 어항에서 한정된 해양경찰자원으로 수요자 중심의 고품질 해양경찰 서비스를 제공할 수 있는 현장 서비스 표준 모델 개발을 목적으로 어업관련 업무를 영역별로 분석하고 어업종사자의 친숙도를 조사하였다. 또한 표본항으로 녹동항을 선정하여 해양경찰 파출소에 대한 치안수요와 업무량을 정량적으로 분석하고 업무성취도를 도출하였다. 시사점과 분석결과를 바탕으로 어항 현장 업무 표준 모형을 구성하고 역할중심 조직인 해양경찰대 조직구성과 업무 수요량 기반 자원방안을 제안하였다. 또한 수요자의 만족도 제고와 업무성취도 향상을 위한 교육프로그램을 제시하였다. In order to develop the standard service model of Korea Coast Guard at fishing port, which responses to the demand of users and provides them with the high quality service of maritime administration, the services performed by a branch of KCG are analyzed and the level of familiarity with them are investigated. The degree of affair achievement is quantitatively standardized by assessing the workload of branch office. The standard model of affairs is formatted and the programs of organization, resource operation and education are proposed.

수치해석에 의한 노후저수지의 침투 및 동적거동

박성용,장석현,임현택,김정면,김용성,Park, Sung-Yong,Chang, Suk-Hyun,Lim, Hyun-Taek,Kim, Jung-Meyon,Kim, Yong-Seong 한국농공학회 2016 한국농공학회논문집 Vol.58 No.3

It is significant to redevelop the deterioration reservoir through raising for countermeasure to climate change and Earthquake improvement of reservoir. This study aims to investigate the behavior of deterioration reservoir with poor-fabricated core subjected to raising water level and earthquake using numerical analysis. From the analysis results, water level raising and earthquakes induce crack and subsidences at the crown and the front side of deterioration reservoir. For the reinforcement of the deterioration reservoir is required appropriate measures method and raised method suitable, drainage and slope protection method judged to be necessary.

Bacillus subtilis BC-P1 균주를 이용하여 제조한 청국장의 발효 및 품질 특성분석

박성용,방미애,오병준,박정훈,송원섭,최경민,정의수,부희옥,조승식,Park, Sung-Yong,Bang, Mi-Ae,Oh, Boung-Jun,Park, Jeong-Hoon,Song, Won-Seob,Choi, Kyung-Min,Choung, Eui-Su,Boo, Hee-Ock,Cho, Seung-Sik 한국미생물학회 2013 미생물학회지 Vol.49 No.3

본 연구진은 청국장에서 수종의 미생물을 분리하였으며, 이중 소화 효소능이 뛰어난 균주를 선별하였으며, 유전학적 분석결과를 통해 본 균주가 Bacillus 속 균주임을 확인하고 Bacillus subtilis BC-P1이라 명명하였다. Bacillus subtilis BC-P1을 starter로 사용하여 청국장을 제조하였으며, protease, xylanase, chitinase activity, 혈전 분해능, 영양성분 분석 및 아미노산 분석을 통하여 B. subtilis BC-P1를 starter로 활용한 청국장 제품의 개선 가능성을 타진하였다. Bacillus subtilis BC-P1를 starter로 제조한 청국장은 기존 제품에 비해 우수한 소화효소 생성능을 보였으며, 특히 혈전분해효소 생성능이 우수함을 확인하였고, 대조군에 비해 증가된 환원당 및 총 아미노산 함량을 확인 할 수 있었다. 따라서 본 균주를 starter로 하여 청국장을 제조할 경우 기능성분, 생리활성의 증가, 품질 향상을 기대할 수 있을 것으로 판단되며, 향후 대규모 생산시 균주, 제조 조건에 관한 연구가 필요할 것으로 사료된다. The object of this study was to improve the quality of Cheonggukjang with new starter, Bacillus subtilis BC-P1. Twenty strains were isolated from the commercial cheonggukjang and 1 Bacillus strain (BC-P1) with protease activity was selected. The 16S rRNA gene sequence revealed that the BC-P1 was closely related to B. subtilis with 99% homology. The quality characteristics of chunggukjang fermented with B. subtilis BC-P1, Bacillus nato (PC) and commercial chunggukjang (NC) were investigated. The characteristics of fermentation were determined by protease, lipase, xylanase, chitinase, and fibrinolytic activities, reducing sugar, nutrient composition and amino acid contents of cheonggukjang sample. Cheonggukjang fermented with B. subtilis BC-P1 showed the strongest fibrinolytic, xylanase, and chitinase activities. Reducung sugar contents of Cheonggukjang samples were $30.16{\pm}2.11$ mg/g (NC), $28.56{\pm}1.52$ mg/g (PC), $32.39{\pm}1.87$ mg/g (BC-P1). And their total amino acid contents were 338.99 mg% (NC), 445.19 mg% (PC), 741.35 mg% (BC-P1). These results suggested that B. subtilis BC-P1 was suitable to be used as a starter to enhance the quality and effects of cheonggukjang.

현장 굴착 실험을 통한 사면붕괴 거동 연구

박성용,정희돈,김영주,김용성,Park, Sung-Yong,Jung, Hee-Don,Kim, Young-Ju,Kim, Yong-Seong 한국농공학회 2017 한국농공학회논문집 Vol.59 No.5

Recently, the occurrence of landslides has been increasing over the years due to the extreme weather event. Developments of landslides monitoring technology that reduce damage caused by landslide are urgently needed. Therefore, in this study, a strain ratio sensor was developed to predict the ground behavior during the slope failure, and the change in surface ground displacement was observed as slope failed on the field model experiment. As a result, in the slope failure, the ground displacement process increases the risk of collapse as the inverse displacement approaches zero. It is closely related to the prediction of precursor. In all cases, increase in displacement and reverse speed of inverse displacement with time was observed during the slope failure, and it is very important event for monitoring collapse phenomenon of risky slopes. In the future, it can be used as disaster prevention technology to contribute in reduction of landslide damage and activation of measurement industry.

전립선암에 대한 초음파 영상유도 방사선치료의 Setup 오차 분석을 통한 재현성 평가

박성용,임승규,시명근,이지해,김종열,조은주,Park, Sung Yong,Lim, Seung Kyu,Si, Myoung Geun,Lee, Ji Hae,Kim, Jong Yeol,Cho, Eun Joo 대한방사선치료학회 2017 대한방사선치료학회지 Vol.29 No.2

목 적: 전립선암 환자에 대한 비침습적이고 피폭선량에 대한 부담이 없는 초음파를 이용한 영상유도방사선치료의 Setup 오차 분석을 통해 치료의 재현성을 평가해 보고자 한다. 대상 및 방법: 치료가 종료된 전립선암 환자 26명의 1,105영상에 대하여 앞-뒤(anterior-posterior, AP), 좌-우(right-left, RL), 위-아래(superior-inferior, SI) 방향의 Setup 오차에 대해 평균, 표준편차와 3D-error을 분석하였다. 또한 오차범위 0-1 mm, 1-3 mm, 3-5 mm, 5 mm 이상에 대한 각 오차 빈도수(frequency, %) 분석을 통하여 AP, RL, SI 방향에 대한 방향성을 확인 하였다. 결 과: Setup 오차는 AP, RL, SI 방향에 대하여 평균과 표준편차는 $1.87{\pm}1.36mm$, $1.73{\pm}1.22mm$, $2.01{\pm}1.40mm$였다. 3D-error는 평균 $3.63{\pm}1.63mm$였다. 각 방향에 대한 Setup 오차값의 빈도(frequency, %)는 AP 방향에 대한 오차범위 0-1 mm에서 29 %, 1-3 mm에서 50.2 %, 3-5 mm에서 19.6 %, 5 mm 이상에서 1.3 %였다. RL 방향에 대하여 오차범위 0-1 mm에서 31.3 %, 1-3 mm에서는 52.5 %, 3-5 mm에서는 15.8 %, 5 mm 이상에서 0.5 %였다. 마지막으로 SI 방향에 대한 오차범위 0-1 mm에서 26.3 %, 1-3 mm에서 50.2 %, 3-5 mm에서 22.4 %, 5 mm 이상에서 1.1 %였다. 결 론: Setup error는 SI 방향에서 $2.01{\pm}1.40mm$로 가장 컸으며 오차 빈도는 모든 방향에서 50 % 이상 오차 범위 1-3 mm에 들어온 것으로 확인되었다. $Clarity^{TM}$ Auto scan을 이용한 초음파영상유도 방사선치료는 치료 전에 방광의 전처치 상태, target의 구조 등을 관찰이 가능하고, 치료 중 target의 움직임을 실시간으로 monitoring하여 빠른 repositioning이 가능하다. 결과적으로 초음파를 이용한 실시간 영상유도방사선치료는 치료의 재현성을 높일 수 있을 것으로 사료된다. Purpose: To evaluate the reproducibility of image-guided radiotherapy using ultrasonography which is non-invasive, without radiation exposure for prostate cancer patients. Materials and Methods: We analyzed the setup variation of 1,105 images for 26 prostate cancer patients and the mean, standard deviation and 3D-error in AP, RL and SI directions. Setup variations were classified 0-1 mm, 1-3 mm, 3-5 mm, 5 mm and more. Results: The mean and standard deviation of setup variation in AP, RL and SI directions was $1.87{\pm}1.36mm$, $1.73{\pm}1.22mm$ and $2.01{\pm}1.40mm$. The 3D-error in AP, RL and SI directions was $3.63{\pm}1.63mm$. The frequency of setup variation in AP direction was 29 % in the range from 0 mm to 1 mm, 50.2 % in the range from 1 mm to 3 mm, 19.6 % in the range from 3 mm to 5 mm and 1.3 % in the range of 5 mm or more. In RL direction, the frequency was 31.3 % in the range from 0 mm to 1 mm, 52.5 % in the range from 1 mm to 3 mm, 15.8 % in the range from 3 mm to 5 mm and 0.5 % in the range of 5 mm or more. SI direction, the frequency of errors in the range from 0 mm to 1 mm was 26.3 %, 50.2 % in the range from 1 mm to 3 mm, 22.4 % in the range from 3 mm to 5 mm, and 1.1 % in the range of 5 mm or more. Conclusion: The setup error was highest in the SI direction of $2.01{\pm}1.40mm$. The frequency in each direction was the highest in more than 50 % in the range from 1 mm to 3 mm. $Clarity^{TM}$ Auto scan is possible to monitoring the motion of the prostate during the treatment and to repositioning the patient. In conclusion real-time image-guided radiotherapy using ultrasonography will be increase the reproducibility of radiation therapy.

동적원심모형실험에 의한 재개발 저수지의 동적 거동특성

박성용,장석현,임현택,김정면,김용성,Park, Sung-Yong,Chang, Suk-Hyun,Lim, Hyun-Taek,Kim, Jung-Meyon,Kim, Yong-Seong 한국농공학회 2016 한국농공학회논문집 Vol.58 No.3

Recently, lots of damages have been lost because large magnitude earthquakes were occurred in the world. It has been increased the number of earthquakes in Korea. It needs improvement required for the repair of deteriorated reservoirs, reinforcement and raised reservoir coping with climate change and earthquake. This study aims to investigate the seismic behavior of deterioration reservoir levee using dynamic centrifugal model test. Therefore, two case tests in centrifugal field of 60 g, the result has provided the influence on the acceleration response, displacement, settlement and the pore water pressure of the reservoir with earthquakes. From the results larger displacement and acceleration response at the front side of reservoir embankment with poor-fabricated core in seismic condition may degrade overall stability. Reasonable reinforcement method of the raised reservoir embankment is required for ensuring long-term stability on earthquake.

흉강 내시경을 이용한 식도 중봉 낭종 수술 치험 -1례-

박성용,김태훈,이두연,김은영,전세은,조상호,Park, Seong-Yong,Kim, Tae-Hoon,Lee, Doo-Yun,Kim, Eun-Young,Jeon, Se-Eun,Cho, Sang-Ho 대한기관식도과학회 2007 大韓氣管食道科學會誌 Vol.13 No.1

Esophageal duplication cyst is very rare mediastinal tumor which is congenital lesion of the esophagus. Esophageal duplication cyst could be excised with video assisted thoracoscopic surgery(VATS) if it is relatively small, cystic lesion and not adhered severely to the surrounding tissues such as lung, trachea, bronchus, esophagus and pleura. We report a case of an esophageal duplication cyst which was located in the right thoracic cavity below carina and could be excised completely and repaired by interrupted suture with 3.0 black silk. The patient was discharged at 10 days after operation with good condition and has been in uneventful condition 2 months after operation.

유리체강내 트리암시놀론 주사시 트리암시놀론 용적에 따른 안압상승 양상

박성용,최경식,Sung Yong Park,M,D,Kyung Seek Choi,M,D 대한안과학회 2008 대한안과학회지 Vol.49 No.4

Purpose: To assess whether a 4 mg/0.05 ml intravitreal triamcinolone acetonide injection can reduce the IOP elevation compared to conventional 4 mg/0.1 ml injection. Methods: A retrospective case study was performed in 48 patients (48 eyes) who received intravitreal triamcinolone acetonide injection and who had a minimum follow-up time of six months. Patients were randomly assigned to receive 4 mg/0.1 ml or 4 mg/0.05 ml (24 patients in each group). Results: Before injection, mean IOP was 13.8±2.2 mmHg and 13.9±2.4 mmHg in the 0.1 ml and 0.05 ml group. The difference in IOP elevation between the two groups was statistically significant immediately after injection (P=0.000), one hour after injection (P=0.001), and one day after injection (P=0.000). After injection, the central macular thickness decreased significantly the of two groups. The difference of the central macular thickness decrease between both groups was not statistically significant. Conclusions: An intravitreal triamcinolone acetonide 4 mg/0.05 ml injection will more quickly reduce the IOP elevation in the early phase compared to 4 mg/0.1 ml injection, while providing a similar effect on the change of central macular thickness.