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The “Trivial” Mechanism for the Photo-Fries Reaction of Phenyl Acetate and Biphenylyl Acetates
윤효정,고성혜,고미경,최우기,Yun, Hyo Jeong,Go, Seong Hye,Go, Mi Gyeong,Choe, U Gi Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.9
The mechanism for the photo-Fries rearrangement of phenyl acetate andbiphenylyl acetates were reinvestigat-ed in phenol (or phenol derivatives) containing media. The results showed that the phenol (or phenol deriva-tives) which is the most common by-product of Fries reaction reacts with acyl radical togive Fries-product. These phenol (or phenol derivatives) contributions to the Fries-products were suggested as the Trivial mecha-nism for the photo-Fries reaction.
ZigBee 기반의 무선 뇌자극기를 이용한 원격 뇌졸중 치료 시스템
윤효정,양윤석,유문호,김정자,김남균,Yun, H.J.,Yang, Y.S.,Ryu, M.H.,Kim, J.J.,Kim, N.G. 대한의용생체공학회 2007 의공학회지 Vol.28 No.5
Stroke patients need regular medical treatments and rehabilitation training from their doctors. However, severe aftereffects caused by stroke allow them minimum activities, which make it difficult for them to visit doctor. Recently, electric brain stimulation treatment has been found to be better way compared to conventional ones and many are interested in using this method for the treatment of stroke. In this study, we have developed a remote medical treatment system using wireless electric brain stimulator that can help the stroke patients to get a treatment without visiting their doctors. The developed remote medical treatment system connects the doctors to the brain stimulator implanted in the patients via the internet and ZigBee communication built in the brain stimulator. Also, the system receives personal information of the connected patients and cumulates the total records of electric stimulation therapy in a database. Doctors can easily access the information for better treatment planning with the help of graphical visualization tools and management software. The developed remote medical treatment system can be applied to the electric stimulation treatments for other brain diseases with a minor change.
국가바람지도 및 국가지리정보에 의한 해상풍력단지 개발계획의 적합성 검토
김현구(Kim, Hyun-Goo),황효정(Hwang, Hyo-Jung),송규봉(Song, Kyu-Bong),황선영(Hwang, Sun-Young),윤진호(Yun, Jin-Ho) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.06
The objective of this research aims preliminary assessments of the proposed plans of offshore wind farm development based on the recently established national offshore wind map and suitability assessment system of offshore wind farm. Incheon Mueodo, Busan Dadaepo-Gadukdo, Sinangun Haeodo have been assessed considering geographic constraints such as water depth, offshore distance, national park, grid connection, and meteorological constraint such as wind power density and wind direction. According to the assessment, Mueodo plan has a weak point in grid connection and several geographic limitations are involved in Haeodo plan while Dadaepo-Gadukdo seems the most possible plan among the review cases. Because of limited assessment in this research, more detail and further consideration are necessary to make a decision of a feasibility project at proposed sites.