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Angelica gigas NAKAI와 Angelica Purpureafolia CHUNG根의 鑑識法
徐廷祥 全北大學校 文理科大學 1976 論文集 Vol.4 No.-
For the taxanomical camparison Angelica gigas NAKAI and Angelica purpureafolia CHUNG, NMR-spectrum of coumarin fraction of the plants were compared as a means of phytochemical comparison. As the results the ratio ring-H/olefinic-H, provided a route to classification of the plants.
인삼 Extract 중의 alpha-pyrrolidone 검정
서정상(Suh Chung Sang) 대한약학회 1969 약학회지 Vol.13 No.4
The determination of alpha-pyrrolidone in ginseng extract by gas liquid chromatography (GLC) was established. alpha-Pyrrolidone in extract was tentatively identified by comparison of the relative retention time of sample peak with those of reference compound and coinjection noted peak enhancement. The alpha-pyrrolidone peak elimination was demonstrated by formation of oxime when treated with excess of NH2OH.HCL and NaOH, allowed to stand at room temperature for 5 minute. The elimination was also observed when samples were treated by the same procedure. The above method was proved to be useful for the determination of alpha-pyrrolidone in ginseng extract and in ginseng extract mixed with 51 plant extracts.
권갑현,서정상 동양대학교 2000 동양대학교 논문집 Vol.6 No.1
Recently, in every class of schools and evaluation institutes they are checking the OMR exam sheets through a card reader for exclusive use. Not only because it is very expensive but also because there is few domestic made card reader, it's true that we usually depend on imported products. On the other hand, as the image processing techniques have been improved largely, a digital camera which is image-inputting device is spreading widely. This study suggests a preprocessing method that can put OMR exam sheet in by using a digital camera and read it by using a PC. After we emphasize the contrast of the image that was put into a PC, make it binary, and clear the isolated noises in the binarized image, and then we can make marts on the card be interpreted exactly.
권갑현,서정상 동양대학교 1999 동양대학교 논문집 Vol.5 No.1
In this paper, a method for scoring OMR exam sheets using image processing techniques is suggested. In many schools, the special-purpose OMR card reader is used to score OMR exam sheets, but it is very expensive and foreign-made as well. Jn this method, a PC and a digital camera are used, so it is relatively low-priced. In addition, the intermediate images produced in this procedure can be stored easily in the computer storage media. Therefore, the necessary store space can be significantly reduced, and the specific card image can be easily retrieved.