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Electrospun Nanofiber based Electrochromic Devices for Color-Changing e-Textiles
팔락샤,박종승 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Wearable e-textile displays have shown great potential for displays, decoration and sensors. In this regard, electrochromism has collected broad interest for color-changing behaviors, as it exhibits reversible color changes by an electrochemical redox reaction. Viologens find advantages due to low-voltage operation and ion-gel preparation for electrochromic devices (ECDs). When incorporated in ion gel composition, the ECDs show much enhanced electrochromic behaviors. Herein we present the preparation and electronic properties of electrospun nanofiber-based ECDs. Fiber-type ECDs are fabricated using Ag and Ni electrodes, with electrospun nanofibers as an active layer. The reversible and repeated color-switchings from colorless to distinctive blue are manifested. The electrochromic and structural properties are investigated by cyclic voltammetry, kinetic stability, and SEM measurements. In doing so, we intend to prove the feasibility of fiber-type ECDs for wearable e-textile displays.
AQUI-S® 의 조피볼락(Sebastes schlegeli)에 대한 진정 및 마취 효과
신기욱,신용승,김영림,이은영,양향희,팔락샤,연성찬,이희천,오명주,조성준,강승원,정태성 한국임상수의학회 2006 한국임상수의학회지 Vol.23 No.3
Along with olive flounder (Paralichthys olivaceus), black rockfish (Sebastes schlegeli) is another very popular maricultured species in Korea. As there is many difficulties in handlling live fish for aquaculturist, use of suitable anesthesia for proper handling of fish is very important in the field. In this view, the effect of AQUI-S® has analysed for its use in the field. AQUI-S®, contains 50% isoeugenol, is a new anesthics for fish and zero-withdraw time required since it was approved as a safe additives of food. In the present study, black rockfish adult exhibted sedation effect from 5 ppm at 10℃ and 15℃, and 7.5 ppm at 20℃, on the other hand, anesthesia was at least required 7.5 ppm at 10℃ and 15℃, and 10 ppm at 20℃. The fish was recovered from sedation and anesthesia after approximately 5 and 10 minutes, respctively. In case of black rockfish fry, sedation was recorded from 2.5 ppm at 10℃, and 5 ppm at 15℃ and 20℃. The least concentraion of anesthesia was 2.5 ppm at 10℃, 7.5 ppm at 15℃, and 5 ppm at 20℃. The acute toxic test showed that black rockfish adult and fry showed mortality above 12.5 and 15 ppm concentration of AQUI-S®, respectivly. In sum, AQUI-S® is considered as useful anesthetic drug for sedation and anesthesia of black rockfish, it is highly availbale to be prevented from a varity of stress.
Isoeugenol의 넙치(Paralichthys olivaceus)에 대한 진정, 마취 및 독성효과 검토
신기욱,신용승,김영림,이은영,양향희,팔락샤,허남응,연성찬,이희천,오명주,조성준,강승원,정태성,Shin, Gee-wook,Shin, Yong-seung,Kim, Young-rim,Lee, Eun-young,Yang, Hyang-hee,Palaksha, K.J.,Huh, Nam-eung,Yeon, Seong-chan,Lee, Hee-chun,Oh, Myung- 대한수의학회 2005 大韓獸醫學會誌 Vol.45 No.2
Olive flounder (Paralichthys olivaceus) is the major mariculture fish in Korea. The annual aquaculture production of olive flounder in Korea during the period of 2003 was 300,000 ton (2002 Statistics, Ministry of Maritime Affairs & Fisheries, Korea Government). Anesthetics is very necessary in aquaculture to minimize stress and damage during harvesting, grading, transportation, spawning induction and handling to fish. In the present study, isoeugenol as new anesthetic in marine fish, especially olive flounder, was examined to know the efficacy and proper concentration. As a result, olive flounder adult was exhibited sedation at 5 ppm at 10 and $15^{\circ}C$, and 7.5 ppm at $20^{\circ}C$, respectively. Anesthesia was required at least 10, 7.5 and 10 ppm at $10^{\circ}C$, $15^{\circ}C$ and at $20^{\circ}C$, respectively. In case of fry, the effect of sedation was observed from 2.5 ppm at $10^{\circ}C$ and 5 ppm at 15 and $20^{\circ}C$, respectively. Anesthesia was observed from 2.5 ppm at $10^{\circ}C$, 5 ppm at 15 and $20^{\circ}C$, respectively. In acute toxicity test, it was impossible to explore $LD_{50}$ with the concentration of isoeugenol adult at $15^{\circ}C$ used, but over immersion volume of 15 ppm at $15^{\circ}C$ was observed mortality in fry. Based on the present study, isoeugenol was identified as a safe and active anesthetic to olive flounder.