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        검색결과 7

        1.
        2022.10 구독 인증기관·개인회원 무료
        A sequential column experiment was conducted for uranium removal of excessively high or highly U-contaminated soils, simultaneously. Two pilot-scale acryl columns with a 24 cm ID and 48 cm length were uniformly packed with each U-contaminated soil (both < 2 mm, 119, and 22.4 Bq/g as initial U-238 activities). A column packed with soil contained very high U constant located first then sequentially located second columns with relatively lower U-contaminated soil. Thus the effluents which passed very high U-contaminated soil and having extremely high dissolved U concentration was directly inflowed the second columns. Both columns initially and respectively flushed with demi water (or condensing water of air conditioner generated from radiation controlled area) to saturate and displace the air from the pore space. Elution was carried out with alkaline and acidic solutions, respectively, and sequentially. The uranium removal efficiencies were found and a comparison was made with the pilot soil flushing experiments. During this study, a new approach to reducing acidic flushing waste which is considered the biggest defect of soil washing/flushing was established, and optimal factors were calculated to demonstrate industrial-scale uranium decontamination of soil with high uranium content.
        4.
        2013.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        On the ultra-high speed broadband internet network transferring the massive multi-media data, the rapid restoration is very important. The online game industry is also fast growing with supporting of the real-time online network game. The online traffic on the internet network is steadily increasing. The optical based broadband convergence network provides these kinds of services. It is a form of multilayer network which loads the IP traffic on the lower optical DWDM. The failure of the link and node on this kind of network causes the significant loss of data. To solve this kind of problem, the new approach over the conventional one is necessary. It turned out to be its failure recovery thirty-five percent faster
        4,500원
        5.
        2020.08 KCI 등재 서비스 종료(열람 제한)
        In present study, we investigated the antidiabetic effect of Momordica charantia(as well known “bitter melon”). This study was conducted to determine antidiabetic mechanism of Bitter Melon Extract (BME). We measured blood glucose, insulin, glucagon level in a Sprague-Dawley rat model of high-fat diet/streptozotocin(HFD/STZ)-induced diabetes. Five experimental groups were used: normal, HFD/STZ, BME 62.5 mg/kg HFD/STZ, BME 125 mg/kg HFD/STZ and BME 250 mg/kg HFD/STZ. BME was orally administered to the rats every other day for 9 weeks. Results showed that fasting blood glucose levels were significantly lower in the BME 125 mg/kg(150.17 ± 20.22 mg/dL) and 250 mg/kg(124.17 ± 22.17 mg/dL) groups than in the vehicle group(188.83 ± 26.63 mg/dL)(p<0.05). In addition, glucagon levels were lower in the three BME treatment groups than in the vehicle group(p<0.05). Oral glucose tolerance tests revealed that the BME 250 mg/kg group had significantly(p<0.05) reduced 120-minute blood glucose levels and areas under the curve. Our results suggest that BME induces antidiabetic effects via the reduction of glucagon and blood glucose levels.
        6.
        2017.09 KCI 등재 서비스 종료(열람 제한)
        Present study aimed to determine the effect of ‘bitter melon’, a popularly used fruit in Bangladesh and several other Asian countries, on high-fat-diet-induced type 2 diabetes. To investigate the effect, ethanol extract from bitter melon (BME) as a dietary supplement with mouse chow was used. BME was found to significantly attenuate the high-fat diet (HFD) -induced body weight and total fat mass. BME also effectively reduced the insulin resistance induced by the HFD. Furthermore, dietary supplementation of BME was highly effective in increasing insulin sensitivity and reducing hepatic fat and obesity. These results indicate that BME could be effective in attenuating type 2 diabetes and could therefore be a preventive measure against type 2 diabetes.
        7.
        1999.06 서비스 종료(열람 제한)
        The callus from the hypocotyl region of immature embryo of Citrus junos Sieb. was efficiently induced in the ½ MS medium containing 45uM BA after 8 weeks culture. The callus was developed into the two callus type, embryogenic callus and nonembryogenic callus, which can be distinguished by visual examination depending on color and appearence. In vitro regeneration of callus established efficiently in the hormone-free MS medium from the embryogenic callus. In order to investigate the physiological changes depending on the developmental stage of embryo, the embryo was formed in the MS medium. The embryogenic and nonembryogenic callus, and the various stages of the somatic embryo were examimed the changes of esterase activity, and their isozyme patterns as well. The protein content and esterase activities was gradually increased on the developmental stages of embryo. Total protein pattern were different by the SDS-PAGE and were appeared strong band of 23 KD in the torpedo stage. The pattern of the esterase isozyme was exhibited a difference between embryogenic callus and nonembryogenic callus. It was appered pI 6.0, 8.0, 8.2 in the embryogenic callus. Also the new band of pI 4.75 was appeared in the cotyledon. These results suggest that the changes of esterase activities and isozyme patterns are importent factor in the differentiation and development of citrus.