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Acetyl-acetone 法에 依한 纖維類中의 HㆍCHO의 分析에 關하여
류승태 忠州大學校 1976 한국교통대학교 논문집 Vol.9 No.-
We have witnessed directly through our eyes, or the daily newspapers that the daily increasing various pollution and calamities have resulted in a great number of disease and harmful injuries. Nowadays, in order to secure the future welfare of mankind by protecting the natural environment from the ill effects of scientific civilization, every country of the world have come to legislate and enforce the pollution protecting law to legulate the various pollution. This time such civilized countries as Japan, America and European countries come to regulate the quantity of Formaldehyde contained in the fabrics and accordingly I think it necessary to consider a measure for preventing the blow from the fabric export by putting the strict censorship on all the fabrics which are to be exported to these countries. Therefore, in this experimental study, by analizing the quantity of Formaldehyde contained in the fabrics on the basis of the regulating rule for Acetyl-aceton. I measured and investigated the passable possibility of the homemade fabric product, the temperature for its extraction, the polluted extent of untreatmunt fabrics, and so on as a conclusion. I should like to suggest my hope that we should study a proper measurement for such a regulation as soon as possible, because we have not such a regulation in our country.
3 Amino-5-Methylisoxazoline의 反應에 대한 고찰
류승태 忠州大學校 1980 한국교통대학교 논문집 Vol.13 No.3
The chemical reactinity of 3-amino-s-methyl isoxazoline was studied Aromatization of the isoxazoline ring nith the quinone type oxidants was not achieved, possibly due to labile character of the isoxazoline ring under the conditions used. The amino group of the isoxazoline was quite resistant to wara electrophilic attack by contrast with atomatic amino group. It does not react with acetic acid and acetic anhydride but react with fenzoyl chloride to gine a amide derinative.
李京遠,류승태 忠州大學校 1977 한국교통대학교 논문집 Vol.10 No.2
검수 수정 The author has studied turbidity reduction effect of a coagulant (aluminum sulfate) and a co-coagulant(polyacrylamide) in purifcation of in dustry use water. The results observed in this experiment are as below 1) Turbidity reduction effect vary with stirring condition of water, the complete reduction of turbidity is achieved through stirring water (turbidity 300) for 2 minutes (200 r.p.m) and setting it free for 30 minutes. 2) The desirable concentration of the coagutant (aluminum sulfate) is about 30 ppm. for the stream water whose M-alkali degree is Low (30-40 ppm) 3) The optimum PH for turbidity reduction is 6.7-7.3 when aluminum sulfate is used. 4) Water with high degree M-alkali needs more aluminum sulfate for turbidity reduction. 5) The amount of aluminum sulfate used for turbidity reduction can be reduced when small amount of sodium polyacrylate is used, 6) Polyacrylamide does nat show a remarkable turbidity reduction effect but it yields stable flocks. 7) High polymer co-coagulant exhibits a easy turbidity reduction.
柳承泰,盧承宇 忠州大學校 1981 한국교통대학교 논문집 Vol.14 No.2
The rate constants of the hydrolysis of PVS were determined by ultraviolet spectrophotometry at various pH and a rate equation which can be applied over wide pH range was obtained. The reaction mechanism of hydrolysis of PVS and especially the catalytic contribution of hydroxide ion which did not study carefully before in acidic media, can be fully explained by the rate equation obtained. The rate equation reveals that : below pH 7, the reaction is initiated by the addition of water molecule to PVS. At above pH9, the over-all rate constant is only depend upon the concentration of hydroxide ion.
시나리오 기반의 통합 보안 로그 분석을 통한 개인정보 유출 탐지 방안 연구
류승태 ( Seung-tae Ryu ) 한국정보처리학회 2015 한국정보처리학회 학술대회논문집 Vol.22 No.1
최근 정보기술의 발달로 기업의 비즈니스 모델이 아날로그에서 디지털로 전환되고 있다. 기업 에서는 다양한 서비스 제공을 위해 고객의 개인정보를 수집하고 있으며, 이러한 정보는 보안 위협의 대상이 되고 있다. 대다수 기업에서는 다양한 분야의 보안 솔루션이 구축 운용되고 있으나, 솔루션 개발사들의 서로 다른 보안 로그들로 인해 통합 분석에 어려움을 겪고 있으며 이로 인해 보안 모니터링 업무 효율이 낮아지는 문제점을 안고 있다. 본 연구에서는 시간적 연관성을 기반으로 통합 보안 로그를 분석 하고 시나리오화 하여 좀 더 빠르고 정확한 개인정보 유출의 이상징후를 탐지 할 수 있는 방안을 제안한다.