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정우섭,김영수,Jeong, Woo-Seob,Kim, Yung-Su 한국방재학회 2006 한국방재학회논문집 Vol.6 No.4
최근 이상기후 및 집중호우로 인해 낙동강유역의 많은 지역이 재산 및 인명손실을 크게 입고 있으며 제방축조 재료의 획득 및 운송비등의 증가로 인해 재해방지차원의 제방축조에 여러 가지 어려움을 겪고 있는 실정이다. 본 연구에서는 낙동강 하상의 모래를 이용하여 소량의 시멘트를 혼합한 시멘트혼합토에 대해 삼축압축실험을 통해 시멘트혼합율에 따른 특성을 규명하고자 한다. 이를 위하여 낙동강유역 하상 모래와 시멘트의 혼합율을 변화시키면서 실내시험을 실시하였다. 제체재료의 적합성 검토, 설계 및 해석에 필요한 기초자료를 제공하기위해 다짐시험 및 표준삼축압축시험을 실시하여 시멘트혼합율에 따른 강도, 변형에 따른 응력 및 거동특성 등을 분석하였다. There are loss of lives and properties in many areas of the basin of the Nak-Dong river by the unusual weather and the localized heavy rain recently, and many difficulties of levee construction for prevention of disasters by acquisition of material and expensive transportation. In this research, The factors and causes which affect the strength through laboratory tests about the cemented sand that is mixed a few portland cement and sand of Nak-Dong river bed was researched closely. For providing the fundamental data which is needed in design and analysis of levee material, the compaction test and the standard triaxial compression test etc was conducted., analyzed compression strength and characteristic of stress-strain behavior in which the influence of cement content.
Isoxazole에 關한 硏究 : 3-Hydroxyisoxazole類의 合成 synthesis of 3-Hydroxyisoxagoles
金永秀 朝鮮大學校 1981 藥學硏究誌 Vol.4 No.1
5―Aryl or Alkyl substitued 3―Hydroxyisoxazoles were synthesized from corresponding α,β-dihalogenopropionic acid esters and Hydroxylamine in the presence of a Large excess of an Alkali; 3―Hydroxy-5-phenylisoxazole was obtained in a good yield, but the yields of the orther 3―Hydroxyisoxazole were Low. Ethyl-β-chlorocrotonate and Hydroxylamine when reacted afforded 3―Hydroxy-5-methylisoxazole in a considerable yield.
3-Isoxazole系 燐酸Ester의 合成과 殺蟲效果에 對한 硏究
金永秀 조선대학교 약학연구소 1982 藥學硏究誌 Vol.4 No.1
Twenty-two 3-Isoxazolyl phosphates were synthesized and tested for activity against Ist lnstar Larvae of the American Cockroach. Most of the compounds were highly toxic against the insects. Though none of Substituents on the Isoxazole ring were essential for the Insecticidal activity of the phosphates, the Substitution on the ring resulted in Variation in the degree of activity. A few compounds, however, clearly showed a high degree of selection between toxicities in the insect. Especially in 0,0-dimerhyl-0-(5-Phenyl-3-Isoxazolyl) phosphorothioate was Substantially reduced with Little reduction of insecticidal activity.
Isoxazole 誘導體의 合成과 殺蟲效果에 關한 硏究
姜馨龍,金永秀 조선대학교 약학연구소 1984 藥學硏究誌 Vol.6 No.1
5-Aryl or alkyl substituted 3-Hydroxyisoxazoles were synthesized form corresponding α,β dihalogenopropionic acid esters and Hydroxyamine in the presence of Large of in alkali; 3-Hydroxy-5-phenylisoxazole was obtained in good yield, but the yields of the other 3-Hydroxyisoxazole were Low. Ethyl-β-chlorocrotonate and Hydroxyamine when reacted 3-Hydroxy-5-methylisoxazole in a considerable yield. Synthesis of 3-Hydroxyisoxazole, 3-Carbamoylisoxazole derivatives and their insecticidal activities were examined. Reaction of 3-Hydroxyisoxazole with alkyl or aryl isocyanates produced only 2-carbamoylisoxazoles could not be isolated. N-N-dialkyl carbamoyloxyisoxazoles were obtained from 3-Hydroxyisoxazoles by reaction with N-N-dialkyl carbamoyl chloride in pyridine. Some of the compounds, 5-Alkyl-2-(N-Alkyl-carbamoyl)-4-isoxazolin-3-ones, were considerably toxic against lst instar Lavae of the Americana cockroach, perlaneta american a.
전교통 동맥류 환자의 수술시기에 따른 임상적 고찰 : With Special Reference to Planned Timing of Surgery & Outcome
최건,김광명,김영수,고용,오성훈,오석전,김남규,정환영 대한신경외과학회 1992 Journal of Korean neurosurgical society Vol.21 No.10
A prospective analysis of 124 cases of anterior communicating aneurysm were carried out to determine the best time in relation to the hemorrhage for surgical treatment ruptured aneurysm. In order to evaluate the importance of the timimg of surgery with ruptured anterior communicating aneurysms, we planed the timing of surgery at the point of admission for early or delayed and we evaluated the outcome according to the planned timing of surgery. The early operation is an effective method to prevent rebleeding and to decrease the incidence and severity of vasospasm or facilitate the management of its ischemic conseguences.