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이동 차량의 계층적 통합 경로 계획의 경로 부조화 문제 해결을 위한 임시 경유점 수정법
이준우(Joon-Woo Lee),석준홍(Joon-Hong Seok),하정수(Jung-Su Ha),이주장(Ju-Jang Lee),이호주(Ho-Joo Lee) 제어로봇시스템학회 2012 제어·로봇·시스템학회 논문지 Vol.18 No.7
Hierarchical IPP (Integrated Path Planning) combining the GPP (Global Path Planner) and the LPP (Local Path Planner) is interesting the researches who study about the mobile vehicle in recent years. However, in this study, there is the path mismatch problem caused by the difference in the map information available to both path planners. If ever a part of the path that was found by the GPP is available to mobile vehicle, the part may be unavailable when the mobile vehicle generates the local path with its built-in sensors while the vehicle moves. This paper proposed the TWR (Temporal Waypoint Reviser) to solve the path mismatch problem of the hierarchical IPP. The results of simulation provide the performance of the IPP with the TWR by comparing with other path planners.
팜 부산물 옥살산 전처리에 사용된 촉매 회수와 바이오에탄올 생산
정소연 ( So Yeon Jeong ),이호주 ( Hong Joo Lee ),이재원 ( Jae Won Lee ) 한국목재공학회 2013 목재공학 Vol.41 No.6
본 연구에서는 옥살산을 이용하여 팜 부산물 전처리를 수행하였으며 전처리에 사용된 산 촉매를 회수하였다. 150°C에서 전처리 후 액상가수분해산물에 포함된 발효가능한 당은 20 g/ℓ로 다른 조건에서 보다 높았으며 발효를 수행한 결과 72시간 후 3.78 g/ℓ의 에탄올을 생산하였다. 이것은 0.21 g/g의 에탄올 수율에 해당한다. 160°C 이상의 전처리 조건에서 얻어진 액상가수분해산물의 발효는 이루어지지 않았다. 전기투석에 의해 액상가수분해 산물에 포함된 옥살산은 대부분 회수되었으며 동시에 일부 발효저해물질도 제거되었다. 전기투석 후 액상가수분해산물을 이용한 에탄올 발효는 효율적으로 이루어졌으며 발효 24시간 후 5.38 g/ℓ의 에탄올을 생산하였다. 이것은 0.33 g/g의 에탄올 수율에 해당한다. 전처리 후 고형바이오매스를 이용하여 동시당화발효를 수행한 결과 모든 전처리 조건에서 96시간 후 15 g/ℓ 이상의 에탄올을 생산하였으며, 특히 170°C 전처리 조건에서 20.54 g/ℓ의 높은 에탄올 생산을 나타냈다. 전기투석 후 액상가수분해산물을 이용하여 동시당화발효를 수행한 결과 에탄올 생산이 향상되었음을 확인할 수 있었다. In this study, oxalic acid pretreatment of empty fruit bunch (EFB) was performed at different pretreatment temperatures. Also, we evaluated oxalic acid recovery from hydrolysate by electrodialysis. The fermentable sugar concentration in hydrolysate was high at more than 20g/e, when pretreatment was carried out at 150℃. At the same time, ethanol production was 3.78g/e after 72h which correspond to the ethanol yield of 0.21g/g. On the other hydrolysate (160, 170℃), fermentable sugar was not consumed by pichia stipitis during fermentation. Most of the oxalic acid was recovered and some of the fermentation inhibitors were removed by electrodialysis. For the electrodialysis treated hydrolysate, ehanol production was increased compared to the original hydrolysate. The highest ethanol production was 5.38 g/e after 24h which correspond to the yield of 0.33g/g. The ethanol production by simultaneous saccharification and fermentation (SSF) under all pretreatment conditions was more than 15 g/e after 96 h. The highest ethanol production was 20.54g/e, when pretreatment was performed at 170℃. In particular, ehanol production was increased, when electrodialysis treated hydrolysate was used for SSF.
대학병원 피부과 외래에 내원한 안드로겐 및 원형탈모증 환자에서의 대표적 Trichoscopic Finding에 대한 고찰
임재윤 ( Jae Yun Lim ),민준홍 ( Joon Hong Min ),최영준 ( Young-jun Choi ),남재희 ( Jae Hui Nam ),이가영 ( Ga-young Lee ),김원석 ( Won-serk Kim ),정호주 ( Ho Joo Jung ) 대한피부과학회 2016 大韓皮膚科學會誌 Vol.54 No.9
Background: By magnifying the scalp and structure of hair, trichoscopy enables easy differentiation among various hair loss diseases. Objective: To measure the frequency of representative trichoscopic findings in outpatients with androgenetic alopecia and alopecia areata and the frequency of various trichoscopic findings depending on the disease severity of androgenetic alopecia. Methods: This cross-sectional study included 87 patients with androgenetic alopecia (n=57) and alopecia areata (n=30) treated over a year (2014∼2015). Three dermatologists assessed the trichoscopic findings (hair shaft, hair follicle opening, and perifollicular epidermis) in these patients. Results: Vellus hair was observed in 21 of the 30 patients (70%) with alopecia areata and 20 of the 57 patients (35%) with androgenetic alopecia. Among the patients with androgenetic alopecia, as the disease severity increased, the portion of patients with vellus hair, thickness heterogeneity, and honeycomb pigmentation also increased (p<0.05). Conclusion: Trichoscopy is very useful for the diagnosis of androgenetic alopecia and alopecia areata. Additionally, the severity of androgenetic alopecia can be assessed using trichoscopy. (Korean J Dermatol 2016;54(9):699∼705)