본 연구는 울산권 4개 용수댐에서 서식하고 있는 어류상과 생태계교란 생물로 지정된 블루길에 대한 개체군 특성을 파악하고 기초자료를 제공하는데 목적을 가지고 시행되었다. 울산권 4개 용수댐 및 주변지류에 서식하는 어류를 대상으로 2016년부 터 2017년까지 연구를 실시한 결과, 총 9과 28종 1937개체가 확인되었으며, 한국고유종은 6종(고유화율 21.4%), 외래종 4종, 생태계교란 생물 2종이 조사되었다. 본 연구에서 확인된 어류의 개체수를 기준으로 우점종 및 아우점종을 확인한 결과, 우점종은 블루길, 아우점종은 치리로 확인되었다. 블루길 개체군의 연령구조를 조사한 결과, 울산권 4개 용수댐은 만 1~2년생 의 개체군이 많이 확인되었으며, 개체군이 빠르게 성장하고 있는 단계로 판단된다. 또한, 블루길 개체군의 전장-체중 관계식 및 비만도를 분석한 결과, 울산권 4개 용수댐의 전장-체장 관계식은 회귀계수 b값이 3.0보다 크게 나타났으며, 블루길 개체군이 서식상태가 양호한 것으로 판단된다. 비만도는 기울기 값이 양의 값을 보이며, 성장상태가 비교적 양호한 것으로 나타났다. 본 연구결과는 울산권 4개 용수댐에 서식하는 블루길 개체군의 동향 예측을 파악하는데 유용한 자료로 활용될 것으로 본다.

Most of people do not remind of 'Who is domestic medical device business?' A lot of people that Johnson and Johnson, GE and Philips and other foreign companies belong to medical device company. In fact, local enterprises small place based on world market. Local medical device industry's production has grown up rapidly last 10 years. Sales increased nearly 3 times from trillion and 500 billion KRW in 2004 to 4 trillion and 600 billion KRW in 2014. The production record constantly increased owing to safety and good quality of domestic medical devices. As many as 59% of medical devices made in Korea is exported to 198 countries in the world. Currently, medical device industry in the world has been given considerable attention. Cognition and awareness are very much low. Medical device industry, high income creating industry, is said to next generation industry to increase scale, and Korea does not follow world flow. The industry is given support from the government that is not enough. Korean enterprises have small scale among a lot of global enterprises. Being interested in development of medical devices, the author selected department of IT at college.

The methanolic (MeOH) extract of A. fruticosa bark, which showed immune-regulatory activities, was separated to purify an active compared by means of a multi-stage column chromatography. This resulted in the isolation and characterization of an isoflavone glycoside named 4', 6-Dimethoxyisoflavone-7-O-β-D-glucopyranoside. Immuno-regulatory activities of the crude extract of Amorpha fruticosa LINNE bark were compared with that of an isoflavone glycoside (4', 6-dimethoxyisoflavone-7-O-β-D-glucopyranoside). The crude methanolic extract of A. fruticosa and purified single compound showed 16% of relatively low cytotoxicity at a maximum concentration of 1.0 g/L in cultivated normal human lung cell line (HEL299). Cell growth of human T cells was increased up to 15%, 0.5 g/L of the crude extract added group. This was higher than a single compound added one. On the other hand, specific production rates of IL-6 and TNF-α from T cell were higher in the purified compound treat group (0.82×10-4 pg/cell and 1.08×10-4 pg/cell, respectively), compared to 0.5 g/L of the crude extract added group (0.65×10-4 pg/cell and 0.84×10-4 pg/cell, respectively). In addition, the growth of NK-92MI cells incubated with the crude extract was higher up to 56% over the cells grown with a single compound (0.5 g/L). In overall, the crude extract showed relatively higher immuno-regulatory activities compared with a single compound, probably due to the synergic effect given by other substances existed in the crude extract. Even though the siolated compound stimulated higher secretion of cytokines from human T cells.