http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오찬석,명재욱,우혜진,조상현 대한피부과학회 2002 大韓皮膚科學會誌 Vol.40 No.7
A 30-year-old woman had localized several cutaneous neurofibromas on the scalp in a dermatomal distribution(C2). Family history was negative, and evaluation for other signs such as cafe-au-lait spots, axillary frecklings, or Lisch nodules were not revealed. Biopsy specimen showed a well-circumscribed encapsulated tumor which consists of spindle cells with elongated, wavy nuclei and thin wavy collagenous strands loosely spaced in a clear matrix as seen in the neurofibroma. The diagnosis of bilateral segmental neurofibromatosis was made on the basis of the clinical features including the distribution of the neurofibromas and the absence of the family history and the histology consistent with a neurofibroma.
인광 유기 발광 다이오드에서 높은 삼중항 에너지를 갖는 n-type 도펀트의 개발
오찬석,이준엽 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
높은 삼중항 에너지를 갖는 n형 도펀트로서 기존의 리튬 계열의 도펀트를 대체하고 인광소자에서 고효율 구현이 가능한 리튬 화합물을 개발하였다. 리튬 계열의 화합물로서 lithium 2-(oxazol-2-yl)phenolate (LiOx)와 lithium 2-(1-methyl-1H-imidazol-2-yl)phenolate (LiIm)을 인광 유기 발광 다이오드에서 전자 수송층의 이동도와 발광층의 양자 효율을 증가시키기 위해 합성하였다. 합성한 LiOx와 LiIm의 삼중항 에너지는 8-hydroxyquinolinatolithium (Liq)의 2.00 eV보다 높은 2.65 eV와 2.82 eV를 나타내었다. LiOx와 LiIm은 녹색과 청색의 인광 유기 발광 다이오드의 전자 수송 층의 도핑을 하여 Liq와 비교를 하였다. LiOx와 LiIm의 전자 이동도는 1×10<sup>-4</sup> ㎠/Vㆍs 에서 6.6×10<sup>-4</sup> ㎠/Vㆍs 까지 나타내었으며, Liq 대신 LiOx를 도핑 했을 때는 최대 50%까지 양자 효율이 증가를 하였고, LiIm을 도핑 했을 때 최대 22%까지 양자 효율이 증가를 하였다.
오찬석,조용주,진병두,이준엽 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
We designed soluble thermally activated delayed-fluorescence (TADF) dopant by modifying 2,4,5,6,-tetra(carbazol-9-yl)-1,3-dicyanobenzene (4CzIPN) for high efficiency solution processed TADF devices. 2,4,5,6- tetra(3,6-dimethylcarbazoly-9-yl)-1,3-dicyanobenzene (m-4CzIPN) and 2,4,5,6-tetra(di-tert-butylcarbazoly-9-yl)-1,3-dicyanobenzene (t-4CzIPN) soluble TADF materials were designed to dissolve in aromatic solvent because two TADF dopants have aliphatic group for preventing aggregation of the dopant material themselves. Two soluble TADF dopant materials were synthesized by adding a methyl or tert-butyl group for increasing solubility based on the 4CzIPN TADF dopant. The solution device performance of 4CzIPN and m-4CzIPN was poor compared to TADF devices by vacuum process. However, high quantum efficiency 17.1 % by vacuum process and 18.3 % by solution process was achieved using t-4CzIPN, respectively.
Aspergillus phoenicis의 生活史를 통한 Cellulase 및 Xylanase의 活性 변화
오찬석,이영록,Oh, Chan-Seok,Lee, Yung-Nok 한국미생물학회 1984 미생물학회지 Vol.22 No.2
The changes in the activities of Cellulase and Xylanase of A. phoencis during the life cycle were surveyed by using synchronized culture technique. Avicelase activity of the fungus was reached at peak in the initial hyphal growth stage, but decreased gradually during the conidiophore formation, vesicle-phialide formation, and sporulation stages in decreasing order. CMCase, Salicinase, and Xylanase activities were raised very high in the initial hyphal growth stage, but decreased gradually in conidiophore formation and vesicle-phialide formation stages, and then increased, more or less, in the sporulation stage.