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Choi,One-Kyun,Kim,Yong-Seong,Yu,Hye-Kyoung,Lee,Chan,Bang,Hyo-Pil,Yang,Deok-Chun,Kim,Young-Kee 한국자원식물학회 2003 Plant Resources Vol.6 No.1
In this study, as preliminary research for the development of natural estrogen supplement the chemical properties of Iranian black pomegranate juice concentrate and seeds were evaluated. Proximate compositions of pomegranate juice concentrate and seeds were as follows; crude lipid 0.4% and 8.2%, moisture 39.9% and 6.6%, crude protein 0.9% and 12.2%, ash 1.4% and 1.7%, and carbohydrate 42.0% and 84.5% respectively. Major amino acids are glutamic acid (1310.0ppm) and aspartic acid (896.2ppm) in juice concentrate, and glycine (611.1ppm) and arginin (401.6ppm) in seeds. Ascorbic acid has the highest concentration of 20.0mg/l00g in juice concentrate and 0.23mg/l00 in seeds. The compositions of unsaturated fatty acids such as linoleic acid and linolenic acid were higher than those of saturated fatty acids such as stearic palmitic acid. Major minerals were potassium, calcium and sodium, potassium was highest in both juice concentrate and seeds. Vitamins were composed of ascorbic acid (20.0mg/l00g), vitamin B$_1$ 수식 이미지(0.12mg/100g) and niacin (0.80mg/l00g) in juice concentrate, and only ascorbic acid(0.23mg/l00g) in seeds. Organic acids such as citric and L-malic acid were detected only in pomegranate juice concentrate. The contents of total polyphenols were 4.55g/L in juice concentrate and 3.5mg/l00g in seeds, respectively. Phytoestrogens detected in pomegranate juice concentrate and seeds were daidzein, quercetin, genistein and 17β-estradiol.
An Mo-Theoretical Study of a Series of Chlorionitroso Compounds
崔燦有,金宜洛,白禹鉉 東國大學校 1974 論文集 Vol.13 No.-
염화 Nitroso 화합물들의 S_N2형 반응기구와 반응성을 분자궤도 함수론적 반응성지수로서 연구한 결과 Frontier 전자밀도가 친핵성 치환의 반응성을 설명하는데 가장 적절하며 이 이론을 뒷받침하는 실험값과 잘 일치함을 조사 연구하였다. The relative ease of the occurrence of S_N w and reactivity for the chloronitroso compounds are discussed in connection with the MO-Theoretical reactivity indices. the results show that Frontier electron density can be useful in predicting nucleophilic reactivities. The theoretical conclusion derived are in agreements withe the expermental results.
A Study on the Oxidation of Cobalt Film
崔燦有 東國大學校 1975 論文集 Vol.14 No.-
The kinetics of the oxidation of Cobalt films have been studied using quartz microbalance from 600℃ to 900℃ under various oxygen pressures. The oxidations followed the parabolic rate law in all caces and the parabolic rate constant varied apporximately from 1.64×10^-12 to 1.11×10^-11 (g/cm^2)^2 sec^-1 The activation energies calculated from the plots of log K_p vs. 1/T varied between 0.08 eV and 0.3 eV in the above conditions. The 1/n values obtained from the plots of log K_p vs log Po_2 (or log K_p=1/n log Po_2) are about 1/5 to 1/3.7. The mechanism for the oxidation of the Cobalt film is discussed in accordance with other mechanisms such as nonstoichiometric mechanism, diffusion mechanism, and conduction mechanism, etc.
崔燦有,金宜洛,白禹鉉 東國大學校 1976 論文集 Vol.15 No.-
반경험적 분자궤도 함수론인 확장 HU¨ckl 법을 β-Chloro difluoro ethyl methyl sulfides, sulfoxides, sulfones에 적용하여 반응기구와 상대적인 반응속도를 설명하고 n-propyl chloride와 비교 하였다. 계산결과는 실험값과 반응성지수가 잘 일치함을 보였다. A semiempirical molecular orbital theory which is known as extended Hu¨ckel theory is applied to explain the relative reactivity and the reaction mechanism of β-Chloro difluoro ethyl methyl sulfides, sulfoxides, sufones and compared with n-propyl chloride. It has been shown that the calculated MO theoretical reactivity indices are consistent with the experimental order of the reactivity and reaction mechanism.
대기 중 휘발성 유기화합물의 Advanced Technology에 대한 실험비교
최금찬,안병주,김석택,김찬훈,정창훈,서정민,유수영 동아대학교 환경문제연구소 2000 硏究報告 Vol.23 No.1
Nowaday, Advanced technology has been applied to organic destruction technologies that are alternatives to incineration. Plasma, photolysis, and Photocatalytic oxidation processes are an emerging advanced technologies for the abatement of volatile organic compounds(VOCs) in atmospheric pressure air streams, so we has been used these technologies for destruction of VOCs. TCE, Benzene, Toluene, and Xylene were selected as objective materials. We have been studied each process and found many types of reaction parameters which effect on treatment efficiency. So combination processes, which are plasma-photocatalytic oxidation process and photolysis-photocatalytic oxidation process, have been used to increase destruction efficiency. Analysis of above materials and byproducts was carried out by GC-FID.