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양재섭,송애정 대한국토·도시계획학회 2019 國土計劃 Vol.54 No.1
This study aims to analyze the stage-specific changing process of the downtown revitalization policy in Japan since 1998, and to suggest some implications for Korea. The main findings are as follows. First, the downtown revitalization policy in Japan has been undergoing change of three stages; the introduction of policy, the government-led implementation and the promotion of private sectors’ investment. Second, despite some improvements of physical environment, the limits of policy also exist. Third, in-depth survey and ongoing monitoring are necessary to ensure the stability of downtown revitalization projects. Compared to gradual policy changes in Japan, downtown regeneration projects in Korea are similar to the stage of government-led policies. At this stage, it is necessary to prepare the strategies of projects reflecting the local characteristics and to monitor the performances and limitations of projects. In the future, policies to induce the investment and participation of private sectors should be prepared to overcome the limitation of government-led policies.
호알칼리성 단백질 분해 균주 Bacillus sp. TUB 25 의 최적성장에 관한 연구
양재섭,최명철,이동규,강선철 대구대학교 기초과학연구소 1989 基礎科學硏究 Vol.6 No.-
The optimal growth conditions for Bacillus sp. TUB 25 to secrete a large amount of alkaline protease were investigated. The bacterium was reached to maximum growth level in the culture medium containing 1.0% glucose, 0.5% yeast extract, 0.5% peptone, 0.1% K₂HPO₄, 0.02% MgSO₄, 1.0% Na₂CO₃ and 1.0% NaCl. By addition of Na+, the growth of the strain TUB 25 was highly stimulated. And the growth curve showed the highest optical density when Bacillus sp. TUB 25 cultivated at 37℃ for 24 hours. It was characteristic of that the growth of Bacillus sp. TUB 25 was very excellent in alkaline media, and the optimal pH for the growth was about 10.0∼11.0. The relationship between growth and extracellular protease production of the strain TUB 25 showed that protease activity was not detected during the lag and the exponential phase, but was detected during the early stationary phase.