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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.
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.
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%.
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.