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폐색 영역을 이용한 에너지 기반 스테레오 정합의 성능 향상 및 정합 탐색 범위 제한
오태권(Tae_gwon Oh),정회국(Hoe-guk Jung),오광희(Kwang-hee Oh),한희일(Hee-il Hahn) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.11
Energy-based stereo matching method has some limitations due to enormous computational costs and its performance degradation near the occlusion area. To overcome these problems, we try to constrain matching range, which is determined by distance of binocular and compute disparity separately depending on whether the given pixel belongs to the occlusion area or not
Electroporation을 이용한 그람 양성 세균의 형질전환
오태권,김병각,최응칠,Oh, Tae-Gwon,Kim, Byung-Kak,Choi, Eung-Chil 대한약학회 1996 약학회지 Vol.40 No.1
Gram-positive bacteria, Bacillus subtilis BR151 and Staphylococcus aureus RN4220 were transformed with high efficiency by electroporation. The cells were incubated until late log phase, washed three times with 10% glycerol, 1mM HEPES, 12% sucrose and resuspended to $10^{10}{\sim}10^{11}cfu/ml$, then stored at -$70^{\circ}C$. Transformation efficiency of B. subtilis BR151 was $1.03{\times}10^7cfu/{\mu}g$ with cells washed with 10% glycerol and electroporated by 15KV/cm, 0.7msec pulse with pUB110. Transformation efficiency of S. aureus RN4220 was $4{\times}10^6cfu/{\mu}g$ with cells washed with 1mM HEPES + 10% glycerol and electroporated by 15KV/cm, 2.5msec pulse. The number of total transformants was 1000 when B. subtilis BRI51 was transformed with 100ng pUB110 DNA and the number of total transformants was 9000 when S. aureus RN4220 was transformed with 10ng pUB110 DNA
최금화(Keum Hwa Choi),오태권(Tae Gwon Oh),권애란(Ae Ran Kwon),김병각(Byong Kak Kim),최응칠(Eung Chil Choi) 대한약학회 1999 약학회지 Vol.43 No.1
The bactericidal activities of DW-116, a new fluoroquinolone was estimated by comparing the minimal bactericidal concentrations (MBCs) of it against some Gram-positive and -negative bacterial concentration with the minimal inhibitory concentrations (MICs). The MBCs against the test organisms were equal to or two times higher than MICs. The results support that the antibacterial activity of DW-116 is bactericidal.
에리스로마이신 고도내성 대장균 209K 유래 마크로라이드-포스포트란스페라제 K의 정제 및 특성
김숙경(Sook Kyung Kim),오태권(Tae Gwon Oh),백문창(Moon Chang Baek),홍종수(Jong Soo Hong),김병각(Byong Kak Kim),최응칠(Eung Chil Choi) 대한약학회 1997 약학회지 Vol.41 No.3
Resistance gene mphK was cloned from Escherichia coli 209K strain which is highly resistant to erythromycin (EM). By using the cloned plasmid pGE64, E. coli NM522 was transformed. The comparison of macrolide-phosphotransferase K [MPH(K)] activity between E. coli 209K and E. coli NM522(pGE64) showed that the total enzyme activity of MN522(pGE64) was fifty-fole higher than that of 209K. To identify characteristics of MPH(K) more precisely. MPH(K) was isolated and purified from the NM522 (pGE64). The final purification f MPH(K) through several stages of purification process was 89 fole and the overall recovery was 11%. This enzyme was monomer with the molecular weight of 34 kDa and its isoelectric point (pI) was 5.0. The optimal pH and temperature for activity were 8.0 and 40oC, respectively.
김숙경(Sook Kyung Kim),오태권(Tae Gwon Oh),백문창(Moon Chang Baek),김병각(Byong Kak Kim),최응칠(Eung Chil Choi) 대한약학회 1997 약학회지 Vol.41 No.4
The MICs of various macrolide, lincosamide and streptogramin B antibiotics against highly erythromycin-resistant Escherichia coli 209K strain were evaluated. E. coli 209K showed high MICs against 14-membered macrolides and the relatively weaker resistance to 16-membered macrolides, lincosamides and streptogramin B. The macrolide-phosphotransferase K from E. coli 209K showed greater substrate specificity to the 14-membered macrolide antibiotics than to the 16-membered macrolide antibiotics, lincosamide and streptogramin B. Therefore, it was considered that the high resistance was due to the macrolide-phosphotransferase K.