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새로운 2-이미노-1, 3-티아졸리딘 유도체의 Fungicide Library 구축을 위한 연구
박찬호,마혜덕 경기대학교 부설 기초과학연구소 2005 경기대학교 기초과학논문집 Vol.18 No.1
2-phenylimino-1, 3-thiazoline is a compound which was known as a fungicide. In an attempt to synthesize a new active antifungal material, we choose thiazolidine ring as a target molecule. 2-Cyclohexylimino-4-phenyl-1, 3-thiazolidine which has cyclohexylimino and phenyl group on C-2 and C-4 in thiazolidine ring respectively was made by refluxing chloroacwtophenone and thiourea in ethanol. The result of RCB(Rice Blast, i.e.antifungal activity test on rice) show that their activities have 40%-75%.
버들치(Rhynchocypris oxycephalus)의 vitellogenin 생성량 측정을 이용한 수중 estrogen휴 화합물의 정량분석법에 관한 연구
김을환,이도부,한상훈,윤병수 경기대학교 부설 기초과학연구소 2005 경기대학교 기초과학논문집 Vol.18 No.1
Vitellogenin(Vtg), a phospholipoglycoprotein precursor of egg yolk, is synthesized and secreted from the liver in response to estrogens in female fish. Vtg is normally undetectable in the blood of male fish, but can be induced by exposure to chemicals possessing estrogenic activity. Thus, the presence of Vtg in blood of male fish can serve as a useful biomarker for assessing previous exposure to estrogenic compounds. In the present study, Vtg was abnormally expressed in Rhynchocypris oxycephalus treatment of Estradiol Benzoate (E_(2)). As the result, it was found that the level of Vtg in blood from R. oxycephalus was increased by treated quantity of E_(2) with dose-effect manner.
김차영,안진호 경기대학교 부설 기초과학연구소 2005 경기대학교 기초과학논문집 Vol.18 No.1
The need for scalable and reliable group communication mechanisms is increasingly driven by the expansion of group-based applications in large scale distributed systems. Because network-level reliable group communication protocols rely on IP multicast and have lack of reliability, this motivates the demand on application-level group communication. Probabilistic protocols among there application-level approaches guarantee reasonably high reliability, provide good scalability and are easy to deploy. But, earlier versions of these protocols often rely on assumption that every process knows every other process. There exist probabilistic broadcast protocols based on partially randomized individual views providing totally ordered delivery of broadcast messages to members of large groups. However, there is no such probabilistic broadcast protocol providing causally ordered delivery property, which is very useful for many distributed applications such as video-conferencing and multi-party games. This paper presents a probabilistic broadcast protocol to guarantee causally-ordered delivery semantics based on the local view of every individual member consisting of a subset of members, which continuously evolves, but never exceeds a fixed size.
On Some Application of Caccioppoli Estimates
Ko, Young-Sang 경기대학교 부설 기초과학연구소 2005 경기대학교 기초과학논문집 Vol.18 No.1
In this paper, under one of the hypothesis ◁ 수식참조 ▷ we show that the solution for homogeneous case of ◁ 수식참조 ▷ is constant.
한강 하류 수역의 식물플랑크톤의 계절적 분포와 우점종에 관한 연구
문병렬,이옥민 경기대학교 부설 기초과학연구소 2005 경기대학교 기초과학논문집 Vol.18 No.1
We investigated seasonally the distribution of phytoplankton and physico-chemical factors at four stations of downstream water in Han-river from April to October 2004. The phytoplankton collected in this study was totally 135 taxa that belongs to 4 phylums 4 classes 13 orders 5 suborders 19 families 2 subfamilies 52 genera 120 species 1 subspecies 14 varieties. Chrysophytes revealed to the dominant division that they occupied 72 taxa as 53.3% among totally occurring taxa. The indicator of clean water was Surirella splendida, and the indicator of pollition water was 20 taxa including Oscillatoria formosa in this study. In the seasonal analysis of water quality and phytoplanktons, it was appeared that the downstream waters of Han-river was polluted deeply at summer and autumn.