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한국에서 자생하는 Saururaceae의 성분에 대한 연구(1) GC 및 GC-MS를 이용한 Houttuynia Cordata의 휘발성 성분
권순자,엄기동,최광훈,장덕상 濟州大學校 基礎科學硏究所 1989 基礎科學硏究 Vol.2 No.1
The volatile constituents from the aerial parts of Houttuynia cordata(Yakmomil) originating in Korea(Ulleung-do) have been isolated by gas chromatography(GC) using two columns (OV-1 and PEG-20M) and identified by the comparison of their gas chromatograms or mass spectra with those of pure authentic compounds. The analysis shows that the volatile constituents of Houttuynia cordata of Korea are α-pinene, β-pinene, p-cymene, camphene, myrcene, limonene, linalool, geraniol, borneol, bornyl acetate, β-caryophyllene, humulene(α-caryophyllene), thymol, octanal, decanal, dodecanal, 2-undecanone, decanoic acid, dodecanoic acid, tetradecanoic acid and hexadecanoic acid.
21세기를 맞으며 : Reform of High school Education in China 중국고등교육의 개혁
張德祥 평택대학교 1998 論文集 Vol.10 No.2
중국고등교육의 개혁은 체제, 구조, 구성의 합리화와 교육의 질과 학교운영의 수준을 높이기 위해 전면적으로 소질을 종합화하는 교육을 강화하여, 21세기를 맞이하며 교학내용과 과정의 체계를 개혁하여, 고등교육의 교학평가제도 및 지표체계와 평가방법을 세우고 완비한다.
朴吉淳,張德相 濟州大學校 海洋資源硏究所 1985 해양과환경연구소 연구논문집 Vol.9 No.-
水中의 鹽化物이온을 定量하는 方法으로 널리 利用되어 온 內海의 方法은 檢量線이 Lamdert-Beer의 法則에 適用되지 않고 共存이온과 溫度의 영향을 받아 微量의 鹽化物이온을 正確하게 定量하기 곤란하였다. 그래서 鹽化物이온 13㎖/ℓ이하의 용액 10㎖에 티오시안산제2수은溶液(0.3%) 2㎖, 황산제2철암모늄溶液(6%) 4㎖, Triton X-100 1㎖ 및 아세톤 8㎖를 정확히 가하고 10分間 發色시킨 다음 460nm에서 吸光度를 測定하여 Lambert Beer의 法則에 적용되는 定量方法을 얻었다. 이 方法은 溫度, 放置時間, 共存이 온의 영향등도 적었다. Since conventional Usumi's method which is presently being used is not in accordance with Lambert-Beer's law and sensitivity is decreased due to diverse ions and temperature, it is rather desirable to desirable to design a new method in determining the micro amount of chloride in water. Hence, a simple and accurate spectrophotometric method for micro-chloride determination was developed using Triton X-100 and acetone. The procedure is as follows. Sample which contains less than 13㎎/ℓ of chloride ion is taken in a stoppered reaction flasks, and 2㎎ of 0.3% mercuric thiocyanate, 4㎖ of 6% ferric ammonium sulfate, 1㎖ of acetone are added. Allowed to stand at room temperature for 10 minutes. The absorbance of the colored solution is measured at 460nm with a 10㎜ cell against the reagent blank. This method is in accordance with Lambert-Beer's law in the range of O to·13㎎/ℓ in chloride ion concentrate and no interference is detected by fluoride, nitrate, nitrite and thiosulfate. It is not discolored by standing time. Although the sensitivity is decreased by increasing of temperature it is rather accurate at the range of 15-22℃. Therefore, it could be said that this proposed method is simple, time saving and accurate for the determination of micro amount of chloride in water.