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권수완,황범태,정순옥,권오경 한국임상수의학회 1997 한국임상수의학회지 Vol.14 No.1
The lateral hoof of right hind limb of a pregnant Masai giraffe was accidentally injured, and its coronet, hoof wall, and sole were detached in a mass. The bleeding was observed from the exposed dermis of the affected foot for several hours, with second scoreof supporting lameness. The bleeding from the digital artery at the exposed dermis was stopped by epinephrine spray and direct pressing. Nitrofurazone ointment was topocally applied for 5 days and sxytetracycline solusion was delivered by a fluid jet in the affected hoof one month. The calf was born 5 months after the avulsion. The horn of the hoof wall was grown from the coronet to sole, and was gradually filled from the heel to the toe. The growth rate and filling rate of the hoof wall were 0.32mm and 0.54mm a day, respectively.
권수완 ( Soo Whan Kown ),오석헌 ( Suk Hun Oh ),신남식 ( Nam Shik Shin ),송희종 ( Hee Jong Song ),곽동미 ( Dong Mi Kwak ),권오덕 ( Oh Deog Kwon ) 한국가축위생학회 2010 韓國家畜衛生學會誌 Vol.33 No.1
Hematological and serum biochemical values were assessed from 20 clinically healthy Japanese Macaques raised in Everland Zoological Gardens and compared to the International Species Information System (ISIS) reference range that is used internationally as standard for wildlife animals. Taking our standard on sexual maturation at age 4, tRBC values in Macaques under age 4 were significantly lower than those over age 4, but the Hb and PCV values were significantly higher. Compared to the ISIS standard, the tRBC values in Macaques under age 4 were significantly lower whereas the Hb and MCHC values were significantly higher. Moreover, in the samples of Macaques over age 4, the PCV and MCV values were significantly lower than the ISIS standard. On serum biochemistry values the creatinine and amylase values in the Macaques under age 4 were significantly lower than those over age 4. In comparison with the ISIS standard, the values of ALT, ALP, BUN, IP, Ca2+ and K+ in the Macaques under age 4 did have no significant difference. The values of TP, GGT, tBil, amylase, TG and UA were significantly higher than the ISIS standard, but the values of albumin, AST, glucose, creatinine, cholesterol, CPK, LDH, Na+ and Clwere significantly lower. In contrast, the values of TP, albumin, ALT, ALP, creatinine, cholesterol, amylase, TG, IP and Na+ in the Macaques over age 4 did have no significant difference, but the values of GGT, BUN, tBil, UA and Ca2+ were significantly higher, while the values of AST, glucose, CPK, LDH, K+ and Cl- were significantly lower. On the other hand, there was no significant difference in hematological and serum biochemical values between the groups of male and female.
Cyclodextrin Glucanotransferase와 Cyclodextrinase를 생산하는 Bacillus 속 세균의 분리와 그 효소들의 특성
권현주,남수완,김광현,곽영규,김병우 동의대학교 기초과학연구소 1997 基礎科學硏究論文集 Vol.7 No.1
A bacterium producing Cyclodextrin Glucanotransferase (CGTase) and Cyclodextrinase (CDase) was isolated from soil, and named as Bacillus stearothermophilus KJ16 . The growth of the isolated strain occurred in two steps, and syntheses of CGTase and CDase were dependent on the growth cycle of the cell. CGTase was constitutively synthesized during the 1st growing phase. while CDase was synthesized inducibly during the 2nd growing phase. When the medium pH was controlled at 7.0, the maximun enzyme activities of CGTase and CDase were increased by 12-fold (1300 mU/ml) and 2-fold (225 mU/ml), respectively, compared with the pH-uncontrolled batch culture. The CGTase of the isolate converted soluble starch to CDs with the ratio of α-CD:β-CD:γ-CD=42:46:12 at 55℃. The optimal pH and temperature of CGTase were 6.0 and 60℃,respectively and the optimal pH and temperature of CDase were 6.0 and 55℃. The molecular weights of the purified CGTase and CDase were estimated to be 65,000 and 68,000 dalton, respectively, Among serveral substrates, γ-CD was most rapidly hydrolyzed by the purified CDase.
Cyclodextrin Glucanotransferase와 Cyclodextrinase를 생산하는 Bacillus 속 세균의 분리와 그 효소들의 특성
권현주,남수완,김광현,곽영규,김병우 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.3
토양으로부터 CGTase와 CDase를 함께 분비·생산하는 내열성 세균을 분리하였으며, 동정결과 Bacillus stearothermophilus로 판명되어 KJ16으로 명명하였다. Bacillus stearothermophilus KJ16 균주는 회분배양할 경우 2단계 성장을 하며 일차증식기에 CGTase를 생산하고 이차증식기에 CDase를 생산하는 양상을 보였다. 배치 pH를 7.0으로 조절하면서 배양할 경우, CGTase는 균의 증식에 따라 증가하고 CDase는 CGTase보다 뒤에 생산되었다. 그 생산양은 pH 비조절 배양에 비해 CGTase는 최대 12배(1300 mU/ml)까지, CDase는 2배(225 mU/ml)정도 증가되었다. 분리균주가 생산하는 CGTase는 분자량이 65,000 dalton으로 pH 6.0, 60℃에서 최적활성을 보이며 HPLC 분석을 통해 α-, β-, γ-CD를 42: 46: 12의 비율로 생산하는 α/β 혼합형 CGTase였다. 또한 CDase는 분자량이 68,000 dalton으로 pH 6.0, 55℃에서 최적활성을 보이며 최적기질은 γ-CD였다. A bacterium named as Bacillus stearothermophilus KJ16. The growth of the isolated strain occurred in two steps, and syntheses of CGTase and CDase were dependent on the growth cycle of the cell. CGTase was constitutively synthesized during the 1st growing phase, while CDase was synthesized inducibly during the 2nd growing phase. When the medium pH was controlled at 7.0, the maximun enzyme activities of CGTase and CDase were increased by 12-fold(1300 mU/ml) and 2-fold (225 mU/ml), respectively, compared with the pH-uncontrolled batch culture. The CGTase of the isolate converted soluble starch to CDs with the ratio of α-CD: β-CD: γ-CD=42:46:12 at 55℃. The optimal pH and temperature of CGTase were 6.0 and 60℃, respectively and the optimal pH and temperature of CDase were 6.0 and 55℃. The molecular weights of the purified CGTase and CDase were estimated to be 65,000 and 68,000 dalton, respectively. Among serveral substrates, γ-CD was most rapidly hydrolyzed by the purified CDase.
Bacillus stearothermophilus KJ16이 생산하는 Cyclodextrin Glucanotransferase 의 정제와 효소특성
권현주,남수완,김광현,송승구,윤종원,김병우,Kwon, Hyun-Ju,Nam, Soo-Wan,Kim, Kwang-Hyun,Song, Seong-Koo,Yun, Jong-Won,Kim, Byung-Woo 한국생명과학회 1998 생명과학회지 Vol.8 No.3
Cyclodextrin glucanotransferase from B. stearothermophilus KJ16 that can produce both cyclodextrin glucanotransferase and cyclodextrinase was purified by ammonium sulfate precipitation, DEAE-cellulose chromatography, Sephadex G-100 chromatography, and FPLC. The molecular weight of the purifice enzyme was about 65,000 dalton by SDS-PAGE. The optimal pH and temperature were 6.0 and $60^{\circ}C$, respectively. The enzyme was stable at $50^{\circ}C$ for 1 hr and in the pH range of 5.5 and 8.5. Mercaptoethanol and dithiothreitol inhibited the enzyme activity strongly. The enzyme produced 60% cyclodextrin(CD) from 5% soluble starch with the $^{\alpha}$, $^{\beta}$, $^{\gamma}$-CD ratio of 42:46:12. Amylopectin was the most suitable substrate with 67% conversion to CD.
인터넷 포탈의 성공전략 분석: 인수합병 사례를 중심으로
채수완,유병준,권성우 한국경영정보학회 2007 Information systems review Vol.9 No.2
인터넷을 활용한 비즈니스의영역이 확대됨에 따라 인터넷 포탈이 주목 받고 있다. 점차 인터넷 포탈이 종합화, 대형화 되어가면서 그 역할 또한 커지고 있다. 이제 고객의 다양한 욕구와 변화된 경영환경 속에서 인터넷 포탈의 성공전략에 대한 논의가 필요한 시점이 되었다. 따라서 본 논문에서는, 인수합병을 통한 인터넷 포탈의 성공요인들을 제시하고자한다. 이를 위하여, 본 연구에서는, 국내외 주요 인터넷 포탈 기업들의 사례를 정성적 연구방법론을 바탕으로 분석하였다. 연구변수로는 인터넷 포탈의 기본적인 성공요인 2가지와 지속적인 성장을 위한 인수합병의 성공요인 3가지를 선정된 사례에 각각 적용하여 분석을 실시하였다. 분석결과, 독점적 컨텐츠를 확보하는 것과 임계점 이상의 가입자 규모를 확보하는 것이 인터넷 포탈의 성공을 위해 동시에 만족되어야 할 가장 중요한 성공요인들임을 확인하였다. 또한, 인수합병의 성공요인 분석을 통해 효율적인 인수합병 방안을 제시하고 있다.