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Seo, Seung-Bo,Kim, Jae-Ho,Lee, Dae-Hyoung,Lee, Jong-Soo 배재대학교 자연과학연구소 2005 自然科學論文集 Vol.16 No.1
내열성의 cyclomaltodextrin glucanotransferase (CGTase)를 이용하여 열에 안정한 싸이클린 텍스트린 (CD)을 생산하기 위하여 매우 높은 CGTase 활성을 보이는 고열성이며 호알카리성인 B-13 세균을 분리하여 형태적, 생리학적 특성과 16S 리보솜 RNA 서열분석 등을 통하여 Bacillus cereus B-13으로 동정하였다. Bacillus cereus B-13을 2% 가용성 전분, 1% 효모 추출물, 1% Na_(2)CO_(3) 등을 함유하는 SYC 배지 (pH 8.5)에 접종하여 50℃에서 24시간 배양하였을 때 최고의 CGTase 활성(130 U/ml)을 보였다. 또한 부분 정제된 CGTase의 작용 최적 온도와 pH는 각각 65℃, pH 8.5-9.0 이었고 80℃이하와 pH 5.0-10.0에서 안정하였다. 1% 가용성 전분을 부분 정제한 CGTase와 작용 시켰을 때 49%의 CD 수율을 보였다. To produce a thermostable cyclodextrin by using thermotolerant cyclomaltodextrin glucanotransferase(CGTase), a thermophilic and alkalophilic bacterium isolate, designated B-13 showing the highest CGTase activity was isolated from natural sources and identified as Bacillus cereus B-13 based on the morphological and physiological characteristics, and 16S rRNA sequence. The maximal CGTase activity (130 U/ml) was obtained when Bacillus cereus B-13 was cultured in SYC medium containing 2.0% soluble starch, 1.0% yeast extracts, 1% corn steep liquor and 1% Na_(2)CO_(3) (pH 8.5) at 50℃ for 24 h and about 80% of maximal activity was also showed in the culture broth of 60℃ for 18 h . Optimum reaction temperature and pH of the partial purified CGTase for soluble starch were 65℃ and pH 8.5-9.0, respectively. The partial purified CGTase were also stable below 80℃ and pH 5.0-10.0. When 1% soluble starch was digested with the partial purified CGTase, the yield of cyclodextrin was 49%.
동일한 시료에 대한 국내 기관간의 STR 분석결과 비교 : STR 유전자좌 분석법의 표준화 설정을 위하여
박종태,신경진,양윤석,우광만,이숭덕,이승환,이정빈,정연보,조승희,한길로,한면수,홍승범 大韓法醫學會 2001 대한법의학회지 Vol.25 No.1
This paper described a collaborative exercise intended to see what kinds of short tandem repeat (STR) loci are used in different DNA typing laboratories in Korea and to compare their results for the demonstration whether uniformity of DNA profiling results from different laboratory could be achieved in Korea Laboratories were asked to test five tissue DNAs using methods routinely used in each laboratory and to report the results to the coordinating laboratory. The exercise demonstrated that each laboratory was using different STR loci for the typing with different STR numbers,2 VNTRS,36 STRs and amelogenin in total, and the direct comparison of the results from all the laboratory for the 18 loci could not be done as only one laboratory submitted typing results. Among 21 loci for which several laboratories submitted typing results, results for 14 loci were the same and results for the other 7 loci were different depending on the participating laboratory. D1S80, F13A01, D16S539, D21S11, D18S51, D3S1744 were the loci with different typing results. Even in the cases where commercial kits were used, the results were not the same depending on the machines used, that is the capillary electrophoresis or the gel based electrophoresis. The reason for the different results, points about the standardization of the methods arid the profiling data were described.
Syntheses of New Azo Calix[4]arenes Containing Benzo Crown Ether
장승현,정광보 大邱大學校附設 基礎科學硏究所 1998 基礎科學硏究 Vol.15 No.1
New azo calix[4]arenes, 5-benzo-15-crown-5-azo-25,26,27,28-tetrahydroxy calix[4]arene(1), and 5,17-bis(benzo-15-crown-5-azo)25,26,27,28-tetrahydroxy calix[4]arene (2) were prepared by reaction of diazonium salt of 4-aminobenzo-15-crown-5 and clix[4]arene. 4-Aminobenzo-15-crown-5 was synthesized by reduction of 4-nitrobenzo-15-crown-5, obtained from the nitration of monobenzo-15-crown-5.
좌승택,김덕구,오성보 濟州大學校 産業技術硏究所 2000 산업기술연구소논문집 Vol.11 No.2
School illumination with full volume of light and adequate brightness is designed to help students better focus on their education and produce an optimum atmosphere where students can apply their utmost to learning. This paper presents study on actual illumination environment of schools in order to figure out illumination problems. Furthermore. it attempts to suggest an optimum design for schoolroom illumination through computer simulation. We try to attain qualitative improvement effect in school illumination under the illuminaion plan which is based on illumination maintenance and uniformity ratio that K.S. illumination standard sets.
강보승,이정훈,송형곤,송근정,정연권 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3
Heat stroke, a medical emergency, occurs when the body's thermal regulation is upset and unable to dissipate adequate amounts of heat with a rise in body temperature. It is characterized by hyperpyrexia, with a core temperature of 40˚C or more. hot dry skin, and central nervous system disturbance and usually results in rhabdomyolysis and multiorgan failure. Our case, a 43-year-old healthy male, was caused by a marathon, half course, on a sunny day in late summer. He suddenly fell down on the road and was delivered to a nearby hospital, where a seizure developed. He was transfered to our hospital and then displayed Central Nervous System disturbance, hot dry skin, acute liver failure, rhabdomyolysis, anurlc acute renal failure, and disseminated intravasculular coagulopathy. He was treated with general supportive care and hemofiltration. Despite the aggressive management, he died of shock on the fifth day after admission.
좌승택,오성보 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.2
School illumination with full volume of light and adequate brightness is designed to help students better focus on their education and produce an optimum atmospnere where students can apply their utmost to learning. This paper present to study actual illumination environment of schools in order to figure out illumination prolems. Furthermore. it attempts to suggest an optimum design for schoolroom illumination through computer simulation to attain qualitative improvement effect in school illumination under the illuminaion plan which is based on illumination maintenance and uniformity ratio that K.S. illumination standard sets.