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        검색결과 4

        1.
        2020.12 KCI 등재 서비스 종료(열람 제한)
        This study analyzed future projections on daily mean values and extremes for temperature and daily precipitation over Seoul metropolitan city using bias-corrected high-resolution multi-regional climate models. The factors of uncertainty for the future projection of climate variables were defined. In the time series analysis of future projections for regional climate models, the average daily temperature and the number of days of the hot day-hot night were predicted to have a stable trend in the RCP2.6 scenario, and showed a tendency to increase continuously in the RCP8.5 scenario. The daily mean precipitation and RX1day (annual daily maximum precipitation) had large annual variabilities in the models. In the estimation of the fraction of total variance, the daily mean temperature was dominated by the internal variability in the early 21st century and the most contributing to the scenario uncertainty in the late 21st century. The daily mean precipitation showed a remarkable contribution from the internal variability over the entire period. The number of days of the hot day-hot night showed a similar contribution pattern to that of the daily mean temperature. For the RX1day, the internal variability dominated over the entire period, and the scenario uncertainty had little contribution. This study will help establish more scientific climate change adaptation policies by providing the uncertainty information for future climate change projection.
        2.
        2004.07 KCI 등재 서비스 종료(열람 제한)
        This study was conducted to remove organics and nutrients using 2 stage intermittent aeration reactor. First reactor, using suspended microbial growth in intermittent aeration instead of anaerobic reactor in the typical BNR process, used minimum carbon source to release P, and it was possible to reduce ammonia loading going to second reactor. In the second reactor, using moving media intermittent aeration, it was effective to reduce nitrate in non-aeration time by attached microorganisms having long retention time. In aeration time, nitrification and P uptake were taken place simultaneously. From the experiment, two major results were as follows. First, the removal of organics was more than 90%, and optimum aeration/non-aeration time ratio for organic removal was corresponded with aeration/non-aeration time ratio for nitrogen removal. Second, in the first reactor, optimum aeration/non-aeration time ratio was 15/75 (min.) because it was necessary to maintain 75 min. of non-aeration time to suppress of impediment of return nitrate and to lead release of phosphate. In the second reactor, optimum aeration/non-aeration time ratio was 45/90 (min.).
        3.
        2004.06 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        -2로 동결된 노르웨이산 고등어로부터 pretense 활성이 강한 미생물을 분리하였다. 분리된 미생물을 형태 및 생리학적 성상에 의거하여 동정한 결과 Bacillus magaterium으로 분류되었다. protease 최대 활성을 얻기 위해 최적온도, pH, 배양시간, 탄소원, 질소원, 무기원 및 이들에 대한 지적농도를 조사한 결과 pH 는 8, 온도는 35, 배양시간은 48시간 이였고, 탄소원은 galactose로 1.2%, 질소원은 NHNO
        4.
        2004.03 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        고등어 fillet 제품의 저장 중 항산화와 기능성을 부여하고 고등어 특유의 비린내를 제거하기 위해 식염 외에 녹차, dill weed, 키토산, 올리고당, 생강을 첨가하여 진공포장한 후 5, , -2에 80일간 저장하면서 제품 특성을 조사하였다. 5에 저장한 고등어 fillet의 휘발성 염기질소 측정 결과는 이들 첨가물을 단독 또는 복합적으로 첨가한 시제품에서 2주 이내에 초기부패에 도달했고, 에서는 4∼7주, -2에서는 저장 80일간 모든